CN2110234U - Earthquake predictor - Google Patents
Earthquake predictor Download PDFInfo
- Publication number
- CN2110234U CN2110234U CN 91207441 CN91207441U CN2110234U CN 2110234 U CN2110234 U CN 2110234U CN 91207441 CN91207441 CN 91207441 CN 91207441 U CN91207441 U CN 91207441U CN 2110234 U CN2110234 U CN 2110234U
- Authority
- CN
- China
- Prior art keywords
- sensor
- circuit board
- circuit
- earthquake
- host
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 235000014676 Phragmites communis Nutrition 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000035945 sensitivity Effects 0.000 claims description 5
- 239000003292 glue Substances 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 abstract description 3
- 230000005236 sound signal Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001875 Ebonite Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Geophysics And Detection Of Objects (AREA)
Abstract
An earthquake predictor comprises a sensor, a signal processing circuit, an audio frequency oscillation circuit and a power amplifier circuit. The sensor is a closed shell, and a sensor circuit board and an electret microphone are arranged in the shell. The output signal of the sensor circuit is sent to the input end of the signal processing circuit through the shielded cable. The device makes the circuit work according to the earth sound signal before earthquake, thereby achieving the purpose of alarming before earthquake. The utility model discloses the structure is ingenious, convenient to use, with low costs, easily preparation, easily popularizes the earthquake predictor that popularizes family, unit used.
Description
The utility model belongs to the earthquake alarm technical field, is a kind of earthquake prediction device that is applicable to that family, unit use.
Earthquake is a kind of disaster, and it has brought tremendous loss to the mankind.For reducing the disaster that earthquake brought, have multiple seismic monitoring equipment at present, as terrestrial magnetic field instrument, earthing resistivity measuring instrument or the like, these equipment are very sensitive, all play an important role for predicting an earthquake and measuring seismic intensity.But because these device structure precisions cost an arm and a leg, only limit to seismograph station and use, should not popularize, promote in family, unit.Have some to be applicable to the earthquake Alarm that family uses, all adopt the weight sensor to make circuit connect and report to the police, when also being only limited to earthquake, alarm is just worked, and does not have the effect that predicts an earthquake in advance.
Task of the present utility model is exactly to make circuit working according to the ground acoustical signal before the earthquake, thereby reaches the purpose of reporting to the police before the shake.
The conspicuous advantage of the utility model is, structure is ingenious, easy to use, cost is low, be easy to make, and is easy to popularize family, unit is that use and earthquake prediction device that can report to the police before earthquake.
Below in conjunction with accompanying drawing concrete structure of the present utility model and principle of work are described in detail.
Fig. 1 is the utility model sensor construction synoptic diagram.
Fig. 2 is the utility model circuit theory diagrams.
As shown in Figure 1, sensor is that a closed shell 1, housing 1 can be made with steel pipe or hard rubber material.Sensor circuit board 2 is housed in the closed shell 1, and the bottom of closed shell 1 is the sprung copper vibrating reed, and the sprung copper vibrating reed is the receive frequency of acoustic emission frequency difference in order to satisfy unlike material and to break and extension sensor.Electret condenser microphone 3 is close on the sprung copper vibrating reed, the two ends of Electret condenser microphone 3 link to each other with the sensor circuit input end with the power cathode of sensor circuit board 2 respectively, double core shielding cable 4 is drawn in closed shell 1, the double core shielding cable 4 outer marine glue pipes 5 that are with, the crust ground connection of double core shielding cable 4, two heart yearns wherein, heart yearn is connected between the input end of preamplifier state of the output terminal of sensor circuit and signal processing circuit, and another root heart yearn is connected between sensor circuit board 12V power supply and the host circuit board 12V power supply.As shown in Figure 2, the host circuit board of signal processing circuit 6, audio oscillator circuit 7, power amplifier 8 compositions is contained in the host housing.Signal processing circuit 6 comprises preamplifier state, buffer stage, voltage multiplying rectifier and driving stage, and the panel of host housing is provided with the power switch K that is connected with host circuit board
1, sensitivity turn-knob, operating switch K
2, pilot lamp, positive-negative power binding post and signal input jack are housed on the bonnet of host housing.
The host housing of the utility model earthquake prediction device can be arranged on the indoor of user, and sensor should be arranged on apart from the depths of ground below 5 meters.The concrete depth of burying can determine that neighbourhood noise is big according to institute's installation environment, and what should bury is dark, little just bury more shallow of noise.After sensor draws back signal wire, plug is inserted the input jack of host housing.
Principle of work of the present utility model is: before earthquake took place, sensor picked up the earthquake sounds vibration wave, and vibration wave becomes electric signal by high sensitivity Electret condenser microphone 3 with vibration signal, is amplified by the sensor circuit 9 that is contained in the sensor closed shell 1 again.Sensor circuit 9 is an one-level partial pressure type Current Negative Three-Point Capacitance amplifying circuit, by BG
1, R
1, R
2, R
3, R
4, R
5, C
1Form.The output signal of sensor circuit 9 is sent into the input end of signal processing circuit 6 by shielded cable 4, so both can replenish the loss of signal on the circuit, can improve the signal to noise ratio (S/N ratio) of signal again, the false alarm of having avoided undesired signal to cause, the length of cable can be provided with according to user's needs.By the signal of sensor output through capacitor C
2Be coupled to the preamplifier state of signal processing circuit 6, with further raising signal intensity.Preamplifier state is by BG
2, R
6, R
7, R
8, R
9, C
2, C
3Form the partial pressure type current negative feedback circuit, make that the working stability of amplifier is reliable owing to add negative feedback, the signal after the amplification passes through capacitor C
3Be sent to buffer stage.Buffer stage is by BG
3, R
10, R
11, C
4Form,, when the positive half-peak threshold voltage of bigger signal arrives, make BG because this level does not add base bias
3Conducting has caused the variation that collector voltage is big after amplifying, make the reliable conducting of subordinate.Buffer stage has also played isolates because the false alarm signal that other factors causes.The signal of buffer stage output is by C
4Be coupled to by D
1, D
2, C
5The voltage doubling rectifing circuit of forming becomes direct current signal in order to drive the work of driving stage with sound signal, and the effect of W is an action sensitivity of regulating driving stage.Driving stage is by BG
4, BG
5, R
12, D
3, J, K
2, C
8Form BG
4, BG
5Form complex pipe,, strengthen driving sensitivity to improve enlargement factor.D
3In order to protective transistor, J
2Contact is the self-insurance contact, is used for continuing to make behind blackout the relay J adhesive.When drive signal is added to BG
4During base stage, BG
4, BG
5Conducting makes the relay J adhesive, normal opened contact J
1, J
2Connect J
1Make the driver self-insurance, J
2Make warning circuit work, connected the power supply of warning circuit, K
2For the interference of the dash current of getting rid of energized moment is provided with.This warning circuit is made up of audio oscillation level 7, power amplifier level 8.The audio oscillation level is by NE555, R
13, R
14, C
7Forming, is a typical no steady operation pattern, and the sound signal of generation is by the triangle output of integrated circuit NE555, and the audio pulse of output promotes the power amplifier level, and the power amplifier level is by BG
6, D
4, loudspeaker forms, through power amplifier level BG
6Amplifying signal promotes loudspeaker and sends loud sound, reaches the purpose of reporting to the police before the shake.
Claims (3)
1, a kind of earthquake prediction device, be equipped with in the host housing and comprise signal processing circuit, the host circuit board that audio oscillator circuit and power amplifier are formed, the panel of host housing is provided with the power switch that is connected with host circuit board, the sensitivity turn-knob, operating switch, pilot lamp, positive-negative power binding post and signal input jack are housed on the bonnet of host housing, it is characterized in that sensor is a closed shell, sensor circuit board is housed in the closed shell, the bottom of closed shell is the sprung copper vibrating reed, Electret condenser microphone is close on the sprung copper vibrating reed, the two ends of Electret condenser microphone link to each other with the sensor circuit input end with the power cathode of sensor circuit board respectively, double core shielding cable is drawn in closed shell, the crust ground connection of double core shielding cable, two heart yearns wherein, heart yearn is connected between the input end of preamplifier state of the output terminal of sensor circuit and signal processing circuit, and another root heart yearn is connected between sensor circuit board 12V power supply and the host circuit board 12V power supply.
2, earthquake prediction device according to claim 1 is characterized in that double core shielding cable is with the marine glue pipe outward.
3, earthquake prediction device according to claim 1 is characterized in that sensor is arranged on apart from the depths of ground below 5 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91207441 CN2110234U (en) | 1991-04-23 | 1991-04-23 | Earthquake predictor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91207441 CN2110234U (en) | 1991-04-23 | 1991-04-23 | Earthquake predictor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2110234U true CN2110234U (en) | 1992-07-15 |
Family
ID=4916880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91207441 Granted CN2110234U (en) | 1991-04-23 | 1991-04-23 | Earthquake predictor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2110234U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357718C (en) * | 2004-05-28 | 2007-12-26 | 哈尔滨工业大学 | Multifunctional sensor with sound and vibration integration and producing method thereof |
| CN105022087A (en) * | 2015-07-13 | 2015-11-04 | 赵东明 | Imminent earthquake sound detection method, earthquake sound probe implementing the method and application |
| CN105891878A (en) * | 2016-04-19 | 2016-08-24 | 中国科学院上海微系统与信息技术研究所 | Vibration sensor |
-
1991
- 1991-04-23 CN CN 91207441 patent/CN2110234U/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100357718C (en) * | 2004-05-28 | 2007-12-26 | 哈尔滨工业大学 | Multifunctional sensor with sound and vibration integration and producing method thereof |
| CN105022087A (en) * | 2015-07-13 | 2015-11-04 | 赵东明 | Imminent earthquake sound detection method, earthquake sound probe implementing the method and application |
| CN105891878A (en) * | 2016-04-19 | 2016-08-24 | 中国科学院上海微系统与信息技术研究所 | Vibration sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |