TWI485611B - Method and device for measuring signal - Google Patents

Description

Method and device for measuring signals

The present invention relates to a method and apparatus for measuring a signal, and more particularly to a method and apparatus for measuring a signal based on a signal orthogonal mode.

A conventional mutual capacitive sensor includes an insulating surface layer, a first conductive layer, a dielectric layer, and a second conductive layer, wherein the first conductive layer and the second conductive layer respectively have a plurality of first conductive layers The strip and the second conductive strip may be composed of a connecting line of a plurality of conductive sheets and a series of conductive sheets.

When performing mutual capacitance detection, one of the first conductive layer and the second conductive layer is driven, and the other of the first conductive layer and the second conductive layer is detected. For example, driving signals are supplied to each of the first conductive strips one by one, and corresponding to each of the first conductive strips to which the driving signals are supplied, detecting signals of all the second conductive strips to represent the first conductive provided with the driving signals A capacitive coupling signal at the intersection of the strip and all of the second strips. Thereby, a capacitive coupling signal representing the intersection between all the first conductive strips and the second conductive strip can be obtained as a capacitance value image.

Accordingly, it is possible to obtain a capacitance value image when the touch is not touched as a reference, and determine whether the external conductive object is approached or covered by the difference between the comparison reference and the subsequently detected capacitance value image, and further Determine the location that is approached or covered. However, there are many noise disturbances in the surrounding environment, such as low frequency noise interference or narrow frequency noise interference, which may cause misjudgment or positional deviation.

It can be seen that the above prior art obviously has inconveniences and defects, and needs to be further improved. In order to solve the above problems, the relevant manufacturers do not bother to find a solution, but the design that has not been applied for a long time has been developed, and the general products and methods have no suitable structure and methods to solve the above problems. Obviously it is an issue that the relevant industry is anxious to solve. Therefore, how to create a new technology is one of the current important research and development topics, and it has become the goal that the industry needs to improve.

When the signal orthogonal mode is used as the basis of signal processing, there are many odd harmonics in the square wave drive. When the narrow frequency interference occurs near the odd harmonics, the influence of the interference cannot be eliminated. It is an object of the present invention to create a coefficient table in accordance with a plurality of predetermined phases, wherein each predetermined phase is assigned a coefficient. The sine waves are measured at a plurality of predetermined phase intervals of each half cycle to respectively generate a measurement signal, and then multiplied according to each measurement signal and the coefficient corresponding to the phase at the time of measurement to respectively generate a weight measurement signal. Then, the weighted measurement signals are summed to generate a complete measurement signal representing the single measurement result, so that the interference of the higher harmonics can be suppressed.

The object of the present invention and solving the technical problems thereof are achieved by the following technical solutions. A method for measuring a signal according to the present invention includes: receiving a sine wave; measuring a measurement signal of the sine wave at a plurality of predetermined phases of at least one period of the sine wave; each of the at least one cycle Generating a measured signal by a product of a sinusoidal value of a predetermined phase at the time of measurement to generate a weighted measurement signal of the at least one period; and summing all the weighted measurement signals of the at least one period to Generate a complete measurement signal.

The object of the present invention and solving the technical problems thereof can also be achieved by the following technical solutions. An apparatus for measuring a signal according to the present invention includes: an analog measuring circuit that receives a sine wave and at least one of the sine waves a plurality of predetermined phases of the period respectively measuring an analog signal of the sine wave; an analog-to-digital circuit, converting each analog measurement signal into a digital measurement signal; and a processor according to the at least Generating a measurement signal for each digit of a cycle by a product of a sine of a predetermined phase at the time of measurement to generate a weighted measurement signal of the digit of the at least one period, and the at least one period of the signal The weighted measurement signals of all digits are summed to produce a complete measurement signal.

The object of the present invention and solving the technical problems thereof can also be achieved by the following technical solutions. An apparatus for measuring a signal according to the present invention includes: an analog measuring circuit that receives a sine wave and measures an analog signal of the sine wave at a plurality of predetermined phases of at least one period of the sine wave An amplifying circuit for generating an analog weighted measurement signal according to a multiple of the predetermined phase sine value when the analog measurement signal is amplified into a measurement; and a analog-to-digital circuit for weighting each analogy The signal is converted into a digitally weighted measurement signal; and a processor sums the weighted measurement signals of all digits of the at least one cycle to generate a complete measurement signal.

The object of the present invention and solving the technical problems thereof can also be achieved by the following technical solutions. An apparatus for measuring a signal according to the present invention includes: an analog measuring circuit that receives a sine wave and measures an analog signal of the sine wave at a plurality of predetermined phases of at least one period of the sine wave An amplifying circuit for generating an analog weighted measuring signal according to an analogy of the analog measuring signal to a multiple of a predetermined phase sine value; and an integrating circuit for all analogies of the at least one cycle The weighted measurement signal is integrated to generate an analog complete measurement signal; and an analog-to-digital circuit converts each analog complete measurement signal into a digital complete measurement signal.

With the above technical solution, the present invention has at least the following advantages and beneficial effects: 1. suppressing interference of higher harmonics; 2. Processing does not require complex circuits, only a simple digital logic circuit can be completed; and 3. Using integer coefficient values, with integer operations, has the advantage of simplifying operations than floating point numbers.

The invention will be described in detail below with some embodiments. However, the invention may be applied to other embodiments in addition to the disclosed embodiments. The scope of the present invention is not limited by the embodiments, which are subject to the scope of the claims. To provide a clearer description and to enable those skilled in the art to understand the invention, the various parts of the drawings are not drawn according to their relative dimensions, and the ratio of certain dimensions to other related dimensions will be highlighted. The exaggerated and irrelevant details are not completely drawn to illustrate the simplicity of the illustration.

Referring to FIG. 1A, a position detecting device 100 for use in the present invention includes a touch screen 120 and a driving/detecting unit 130. The touch screen 120 has a sensing layer. In one example of the present invention, a first sensing layer 120A and a second sensing layer 120B may be included. The first sensing layer 120A and the second sensing layer 120B respectively have a plurality of conductive strips 140, of which the first The plurality of first conductive strips 140A of the sensing layer 120A overlap the plurality of second conductive strips 140B of the second sensing layer 120B. In another example of the present invention, the plurality of first conductive strips 140A and second conductive strips 140B may be disposed in a coplanar sensing layer. The driving/detecting unit 130 generates a sensing information according to the signals of the plurality of conductive strips 140. For example, in the self-capacitance detection, the driven conductive strip 140 is detected, and in the mutual capacitance detection, a part of the conductive strip 140 that is not directly driven by the driving/detecting unit 130 is detected. In addition, the touch screen 120 can be equipped with On the display 110, the shielding screen 120 and the display 110 may be provided with a shielding layer (not shown) or no shielding layer. In a preferred example of the present invention, in order to make the thickness of the touch screen 120 thinner, no shielding layer is disposed between the touch screen 120 and the display 110.

The first conductive strip and the second conductive strip may be a plurality of row conductive strips and column conductive strips arranged in rows or columns, or may be a plurality of first dimensional conductive strips arranged in a first dimension and a second dimension. The two-dimensional conductive strip is a plurality of first-axis conductive strips and second-axis conductive strips arranged along the first axis and the second axis. In addition, the first conductive strip and the second conductive strip may overlap each other orthogonally or may be non-orthogonally overlapped. For example, in a polar coordinate system, one of the first conductive strips or the second conductive strips may be radially arranged, and the other of the first conductive strips or the second conductive strips may be annularly arranged. Furthermore, one of the first conductive strips or the second conductive strips may be a driving conductive strip, and the other of the first conductive strips or the second conductive strips may be a detecting conductive strip. The "first dimension" and "second dimension", "first axis" and "second axis", drive "and" detection, "driven" and "detected" conductive strips can be used The foregoing "first" and "second" conductive strips, including but not limited to constituting orthogonal grids, may also constitute other intersecting conductive strips having a first dimension and a second dimension. Geometric configurations.

The position detecting device 100 of the present invention may be applied to a computer system, as shown in FIG. 1B, including a controller 160 and a host 170. The controller includes a drive/detect unit 130 to operatively couple the touch screen 120 (not shown). In addition, the controller 160 can include a processor 161 that controls the driving/detecting unit 130 to generate sensing information, which can be stored in the memory 162 for access by the processor 161. In addition, the host 170 constitutes a main body of the computing system, and mainly includes a central processing unit 171, and a storage unit 173 for access by the central processing unit 171, and a display 110 for displaying the result of the operation.

In another example of the present invention, the controller 160 includes a transmission interface with the host 170, and the control unit transmits the data to the host through the transmission interface. Those skilled in the art may infer that the transmission interface includes but is not limited to UART, USB, Various wired or wireless transmission interfaces such as I2C, Bluetooth, WiFi, and IR. In one example of the present invention, the transmitted material may be a location (such as a coordinate), a recognition result (such as a gesture code), a command, a sensing information, or other information that the controller 160 can provide.

In an example of the present invention, the sensing information may be initial sensing information generated by the processor 161, and the host 170 performs position analysis, such as position analysis, gesture determination, command recognition, and the like. . In another example of the present invention, the sensing information may be analyzed by the processor 161 first, and the determined position, gesture, command, and the like are delivered to the host 170. The present invention includes, but is not limited to, the foregoing examples, and one of ordinary skill in the art can infer the interaction between other controllers 160 and the host 170.

In the overlapping area of each of the conductive strips, the upper and lower conductive strips form two poles. Each overlapping area can be regarded as a pixel in an image, and when one or more external conductive objects are approached or touched, the image can be regarded as a captured image (such as a finger). Touch the pattern of the sensing device).

When a driven conductive strip is provided with a drive signal, the driven conductive strip itself constitutes a self capacitance, and each overlap region on the driven conductive strip constitutes a mutual capacitance. The self-capacitance detection described above is to detect the self-capacitance of all the conductive strips, and is particularly suitable for judging the proximity or contact of a single external conductive object.

In the foregoing mutual capacitance detection, when all the driven conductive strips are provided with a driving signal, all the tested conductive strips arranged in different dimensions from the driven conductive strips detect the electrical power of all overlapping regions on the driving conductive strip. The amount of capacitance or capacitance change to be considered as a column of pixels in the image. According to this, the pixels of all the columns are assembled. The image. When one or more external conductive objects are approaching or touching, the image can be regarded as a captured image, and is particularly suitable for judging the proximity or contact of a plurality of external conductive objects.

The conductive strips (the first conductive strip and the second conductive strip) may be made of a transparent or opaque material, for example, may be made of transparent indium tin oxide (ITO). The structure can be divided into a single layer structure (SITO; Single ITO) and a double layer structure (DITO; Double ITO). The materials of other conductive strips can be inferred by those skilled in the art and will not be described again. For example, a carbon nanotube.

In the example of the present invention, the lateral direction is the first direction and the longitudinal direction is the second direction, so that the lateral conductive strip is the first conductive strip and the longitudinal conductive strip is the second conductive strip. One of ordinary skill in the art can deduce that the above description is one of the examples of the invention and is not intended to limit the invention. For example, the longitudinal direction may be the first direction and the lateral direction may be the second direction. In addition, the number of the first conductive strips and the second conductive strips may be the same or different, for example, the first conductive strips have N strips, and the second conductive strips have M strips.

When performing two-dimensional mutual capacitance detection, the AC driving signals are sequentially supplied to each of the first conductive strips, and the conductive strips corresponding to each of the supplied driving signals are obtained via the signals of the second conductive strips. The one-dimensional sensing information, the sensing information corresponding to all the first conductive strips constitutes a two-dimensional sensing information. The one-dimensional sensing information may be generated according to the signal of the second conductive strip, or may be generated according to the difference between the signal of the second conductive strip and the reference. In addition, the sensing information may be generated based on the current, voltage, capacitive coupling amount, amount of charge, or other electronic characteristics of the signal, and may be in the form of analog or digital.

When there is actually no external conductive object approaching or covering the touch screen, or the system does not determine that the external conductive object approaches or covers the touch screen, the position detecting device can generate a reference from the signal of the second conductive strip, and the reference is presented. Stray capacitance on the touch screen. The sensing information may be based on the second conductive strip The signal is generated or generated by subtracting the reference from the signal of the second conductive strip.

Please refer to FIG. 1C , which is a schematic diagram of the above two-dimensional mutual capacitance detection. A first conductive strips feeding terminal T _x pulse width modulation (PWM) signal, via a first capacitive coupling between the conductive strips of R _x T _x and the second conductive strips, the conductive strips may be received in the second end with R _x The same frequency and difference of the T _x end is a fixed phase difference signal.

The invention provides a method and a device for measuring signals, which are the basis of signal processing using a signal orthogonal mode.

For example, the received signal is received at R _x S (t) = A sin ( ω t), where A is the amplitude.

, only when m = n , there is an integral value.

However, the general signal multiplication circuit is not easy to implement on the circuit, so the conventional techniques are implemented in a square wave manner, and become I = ʃ ( PWM ) sgn ( PWM ) dt .

But the Fourier series expansion of the square wave itself can be expressed as There will be many odd harmonics, so it will become.

Where S ( t )=square wave or sine wave+ n ( t ), where n ( t ) is noise or interference, It can be found that there are components with odd harmonics.

Therefore, when there is a narrow-frequency interference occurring near the odd harmonics, the influence of the interference cannot be eliminated, as shown in Fig. 2. Especially when using the analog-to-digital circuit ADC to take the same phase data in each half cycle, and then adding and then Σ (positive half cycle - negative half cycle), the effect on higher order odd harmonics is greater.

Therefore, in a preferred mode of the present invention, sine wave driving is employed, and a coefficient table is established in accordance with a plurality of predetermined phases, wherein each predetermined phase is assigned a coefficient. In a preferred embodiment of the invention, the coefficients are multiples of the sine of the predetermined phase, as shown in the following table.

In addition, the sine waves are measured at a plurality of predetermined phases per half cycle to respectively generate a measurement signal, as shown in FIG. 3, wherein the total measurement is at least a half cycle. Then, multiplying each of the measurement signals and the coefficients corresponding to the phases of the measurements to respectively generate a weighted measurement signal, and then summing the weighted measurement signals to generate a complete quantity representing the single measurement result. Measuring signal.

The invention also employs a pulse width modulation (PWM) signal. Although in Table 1 and FIG. 4, 6 measurement signals are measured per cycle, and the phase difference of 60 degrees per measurement is used for the convenience of the present invention, it is not intended to limit the present invention, and the technical field has the usual The knowledgeer can infer that two, four or more measurement signals can be measured per cycle, and each measurement can be a phase with the same phase difference or a phase with a different phase, which is not limited by the present invention.

According to the above, the complete measurement signal can be .

Refer to the foregoing

AD ( k ) is equivalent to sin( m ω t ), and C ( k ) is equivalent to sin( n ω t ), where m=n. In Table 1, the coefficient value is twice the sine value of the phase. This is because the integer operation is exactly an integer, and the integer operation has the advantage of being simplified compared to the floating point number operation. Accordingly, in an example of the present invention, it is further included that C ( k ) is integerized, that is, multiplied by a multiple such that C ( k ) is represented by an integer. Accordingly, the interference of higher harmonics can be suppressed, as shown in FIG.

The foregoing summing the weighted measurement signals can be achieved by using a digital logic circuit. For example, after measuring the analog measurement signal (such as AD ( k )), the analog measurement signal is converted into a digital measurement signal signal, and then the operation of summing the weighted measurement signals is performed. In other words, processing in this way does not require complicated circuits, and only a simple digital logic circuit can be completed.

According to the above, in a first embodiment of the present invention, a method for measuring a signal is shown in FIG. 5. First, as shown in step 510, a sine wave is received. The sine wave may be provided by the aforementioned controller to provide a chord wave to one or a group of drive strips of a touch screen. In addition, the sine wave is received by one of the plurality of sensing strips in the touch screen that overlaps the one or a group of driving strips that are supplied with a sine wave, and one of the plurality of sensing strips is via The one or a set of drive strips that are provided with a sine wave are capacitively coupled to provide the sine wave. Thereafter, as shown in step 520, a measurement signal of the sine wave is separately measured at a plurality of predetermined phases of at least one period of the sine wave, wherein the measurement signal may be analogous or digital. Next, as shown in step 530, a weighted measurement signal of the at least one period is generated according to a product of each of the measurement signals of the at least one period multiplied by a sine value of a predetermined phase at the time of measurement. Where the weighted measurement signal can be analogous or digital. Next, as shown in step 540, all of the weighted measurement signals of the at least one cycle are summed to generate a complete measurement signal, wherein the complete measurement signal can be analogous or digital.

In an example of the present invention, each measurement signal is converted into a digital measurement signal by an analog measurement signal, wherein the measurement signal measured by the sine wave is analogous, and the weight measurement signal is The digital measurement signal is multiplied by the sine of the digit to produce the product of the digits. Similarly, summing all of the weighted measurement signals of the at least one cycle to produce a complete measurement signal is also performed in a digital manner. In addition, the weighted measurement signal is a product of digits multiplied by a digital measurement signal, and each sine value is multiplied by the same multiple to produce an integer value.

In another example of the present invention, each of the weighted measurement signals is converted into a digital weighted measurement signal by an analog weighted measurement signal, wherein the measurement signals are analogous, and each analog weighted measurement signal It is generated based on a multiple of the sinusoidal value of the predetermined phase when the analog measurement signal is amplified to the measurement. In addition, the sum of the weighted measurement signals may be added in an analogy manner or in a digital manner. For example, all of the weighted measurement signals for the at least one period are always implemented in an integrated manner, as implemented by an integration circuit, and the measurement signal is analogous to the weighted measurement signal. For another example, all analog weighted measurement signals are first analogically rotated to generate all analog weighted measurement signals, and then summed.

In an example of the present invention, the predetermined phase is a continuous arrangement, and adjacent phases have a phase difference of the same phase difference, for example, 60 degrees.

6 is a device for measuring a signal according to a second embodiment of the present invention, comprising: an analog measuring circuit 61, an analog-to-digital circuit ADC, and a processor CPU. The analog measuring circuit 61 receives a sine wave and measures an analog signal of an analogy of the sine wave at a plurality of predetermined phases of at least one cycle of the sine wave. In an example of the present invention, the sine wave may be presented in a current manner, and the analog measurement circuit may be a current-to-voltage circuit that converts the current of the sine wave I into an analog measurement signal according to a reference resistance R. Vanalog. In addition, the analog-to-digital circuit ADC will measure each analogy signal Vanalog Converted to a digital measurement signal Vdigital. In addition, the processor generates a weighted measurement signal of the at least one period according to a product generated by multiplying the measurement signal Vdigital of each digit of the at least one period by a sine value of a predetermined phase when measuring, respectively. And summing the weighted measurement signals of all digits of the at least one cycle to generate a complete measurement signal. In an example of the invention, the digital weighted measurement signal is a multiplicative of the digital measurement signal Vdigital multiplied by an integer value to produce a product of digits, and each sine value is multiplied by the same multiple to produce an integer value.

7 is a device for measuring a signal according to a third embodiment of the present invention, comprising: an analog measuring circuit 71, an amplifying circuit 72, an analog-to-digital circuit ADC, and a processor CPU. The analog measuring circuit 71 receives a sine wave and measures an analog signal Vanalog of the sine wave at a plurality of predetermined phases of at least one period of the sine wave. The amplifying circuit 72 generates an analog weighted measurement signal VWanalog according to an amplification of the analog measurement signal Vanalog to a multiple of the sine value of the predetermined phase at the time of measurement, respectively. In one example of the invention, a set of variable resistors 73 is used to determine the multiples. The analog-to-digital circuit converts each analog weighted measurement signal VWanalog into a digital weighted measurement signal VWdigital, and then the processor adds the weighted measurement signals VWdigital of all digits of the at least one cycle to generate A complete measurement signal.

8 is a device for measuring a signal according to a fourth embodiment of the present invention, comprising: an analog measuring circuit 81, an amplifying circuit 82, an integrating circuit 84, and an analog-to-digital circuit ADC. The analog measuring circuit 81 receives a sine wave and measures an analog signal Vanalog of the sine wave at a plurality of predetermined phases of at least one cycle of the sine wave. The amplifying circuit 82 generates an analog weighted measurement signal VWanalog according to a multiple of the sinusoidal value of the predetermined phase when the analog measuring signal Vanalog is amplified. In one example of the invention, a plurality of varistors 83 are used to determine the multiples. The integration circuit 84 will weight the measurement signals of all analogies of the at least one period VWanalog The integral is used to generate an analogous complete measurement signal VOanalog, and then the analog-to-digital circuit ADC converts each analog complete measurement signal VOanalog into a digital full measurement signal VOdigital.

The analog measuring circuit can also be an integrating circuit or a sustaining and sampling circuit, or other circuit capable of receiving a sine wave, and the invention is not limited.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention; any equivalent changes or modifications which are made in the spirit of the present invention should be included in the following. The scope of the patent application.

100‧‧‧ position detection device

110‧‧‧ display

120‧‧‧ touch screen

120A‧‧‧First sensing layer

120B‧‧‧Second Sensing Layer

130‧‧‧Drive/Detection Unit

140‧‧‧ Conductive strip

140A, T _x ‧‧‧first conductive strip

140B, R _x ‧‧‧second conductive strip

160‧‧‧ Controller

161‧‧‧ processor

162‧‧‧ memory

170‧‧‧Host

171‧‧‧Central Processing Unit

173‧‧‧ storage unit

PWM‧‧‧ pulse width modulation signal

A‧‧‧ amplitude

I‧‧‧Sine wave

61,71,81‧‧‧ analog measurement circuit

72,82‧‧‧Amplification circuit

73,83‧‧‧Variable resistor

84‧‧‧Integral circuit

ADC‧‧‧ analog to digital circuit

CPU‧‧‧ processor

Vanalog‧‧‧ analog measurement signal

Vdigital‧‧‧ digital measurement signal

VWanalog‧‧‧ analog weighted measurement signal

VWdigital‧‧‧ digital weighted measurement signal

Complete measurement signal of VOanalog‧‧‧ analog

VOdigital‧‧‧ digital complete measurement signal

1A and 1B are schematic diagrams of a mutual capacitance type sensor; FIG. 1C is a schematic diagram of mutual capacitance type detection; FIG. 2 is a schematic diagram of a measurement signal being affected by high order odd harmonics; and FIG. 3 is a diagram of each half cycle A plurality of predetermined phase measurements of the sine wave to respectively generate a schematic diagram of the measurement signal; FIG. 4 is a schematic diagram of the measurement signal suppressing the influence of the high-order odd-order harmonic; FIG. 5 is a measurement according to the first embodiment of the present invention; FIG. 6 is a schematic circuit diagram of a method for measuring a signal according to a second embodiment of the present invention; FIG. Figure 7 is a circuit diagram of an apparatus for measuring a signal according to a third embodiment of the present invention; and Figure 8 is a circuit diagram of an apparatus for measuring a signal according to a fourth embodiment of the present invention.

T _x ‧‧‧first conductive strip

R _x ‧‧‧second conductive strip

I‧‧‧Sine wave

61‧‧‧ analog measurement circuit

CPU‧‧‧ processor

ADC‧‧‧ analog to digital circuit

Vanalog‧‧‧ analog measurement signal

Vdigital‧‧‧ digital measurement signal

Claims (15)

A method for measuring a signal, comprising: receiving a sine wave; measuring a measurement signal of the sine wave at a plurality of predetermined phases of at least one period of the sine wave, wherein the predetermined phase is a continuous arrangement, adjacent phases a phase difference having the same phase difference; generating a weighted measurement signal of the at least one period according to a product of each of the measurement signals of the at least one period multiplied by a sine value of a predetermined phase at the time of measurement; And summing all the weighted measurement signals of the at least one cycle to generate a complete measurement signal. The method for measuring a signal according to claim 1 of the patent application, further comprising: providing the sine wave to one or a group of driving conductive strips of a touch screen; and driving the one or a group of the sine wave provided by the touch screen Receiving the sine wave by one of a plurality of sensing strips overlapping the conductive strips, one of the plurality of sensing strips being capacitively coupled via the one or a set of driving strips provided with a sine wave The sine wave is provided. The method for measuring a signal according to claim 1 of the patent scope further includes: converting each measurement signal into an analog measurement signal by an analog measurement signal, wherein the measurement signal measured by the sine wave is analogous And the weighted measurement signal is a multiplicative measurement signal multiplied by the sine of the digit to produce a product of digits. A method for measuring a signal according to claim 1, wherein the weighted measurement signal is multiplied by an integer value by a digital measurement signal to generate a product of digits, and each sine value is multiplied by the same multiple to generate Integer value. The method for measuring a signal according to claim 1 of the patent scope further includes: converting each weighted measurement signal into an analog weighted measurement signal by an analog weighted measurement signal, wherein the measurement signal is analogous, and each An analog weighted measurement signal is generated based on a multiple of the sinusoidal value of the predetermined phase when the analog measurement signal is amplified to the measurement. The method of measuring a signal according to claim 1, wherein all of the weighted measurement signals of the at least one period are always implemented in an integrated manner, and the measurement signal is analogous to the weighted measurement signal. A method of measuring a signal according to claim 1 of the patent application, wherein the phase difference is 60 degrees. A device for measuring a signal, comprising: an analog measuring circuit that receives a sine wave and measures an analog signal of an analog sine wave at a plurality of predetermined phases of at least one cycle of the sine wave, wherein the predetermined The phase is a continuous arrangement, and the adjacent phases have the same phase difference; the analog-to-digital circuit converts each analog measurement signal into a digital measurement signal; and a processor according to the at least one cycle And multiplying the measurement signal of each digit by a product of a predetermined phase sine of the measurement to generate a weighted measurement signal of the digit of the at least one period, and all digits of the at least one period The weighted measurement signals are summed to produce a complete measurement signal. A device for measuring a signal according to the scope of claim 8 wherein the digital weighted measurement signal is multiplied by an integer value by a digital measurement signal to produce a product of digits, and each sine value is multiplied by the same multiple To produce an integer value. A device for measuring a signal according to item 8 of the patent application, wherein the phase difference is 60 degree. A device for measuring a signal, comprising: an analog measuring circuit that receives a sine wave and measures an analog signal of an analog sine wave at a plurality of predetermined phases of at least one cycle of the sine wave, wherein the predetermined The phase is a continuous phase arrangement, and the phase differences between adjacent phases are the same; an amplifying circuit generates an analog weighted measurement according to a multiple of the predetermined phase sine value when the analog measurement signal is amplified to be measured. a signal; a analog-to-digital circuit, converting each analog weighted measurement signal into a digital weighted measurement signal; and a processor summing the weighted measurement signals of all digits of the at least one cycle to generate a Complete measurement signal. A device for measuring a signal according to claim 11 of the patent application, wherein the phase difference is 60 degrees. A device for measuring a signal, comprising: an analog measuring circuit, receiving a sine wave, and measuring a similar measuring signal of the sine wave at a plurality of predetermined phases of at least one period of the sine wave; an amplifying circuit, Generating an analog weighted measurement signal according to a multiple of the predetermined phase sine value when the analog measurement signal is amplified to be measured; and an integration circuit integrating the analog weighted measurement signals of all the at least one period To generate an analogy of the complete measurement signal; and a analog-to-digital circuit, each analogy complete measurement signal is converted into a digital full measurement signal. An apparatus for measuring a signal according to claim 13 of the patent application, wherein the predetermined phase is a continuous phase, and adjacent phases have a phase difference of the same phase difference. A device for measuring a signal according to claim 14 of the patent application, wherein the phase difference is 60 degrees.