CN204242349U - There is early stage electronic monitoring alarm device in earthquake - Google Patents
There is early stage electronic monitoring alarm device in earthquake Download PDFInfo
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- CN204242349U CN204242349U CN201420633844.5U CN201420633844U CN204242349U CN 204242349 U CN204242349 U CN 204242349U CN 201420633844 U CN201420633844 U CN 201420633844U CN 204242349 U CN204242349 U CN 204242349U
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Abstract
The utility model discloses a kind of earthquake and early stage electronic monitoring alarm device occurs, it comprises 6V direct supply, seismic signal observation circuit, differential amplification and buzzer drive circuit.This device adopts NPN transistor bridge diagram as core circuit, and be touched once run into monitoring probe, hummer is sounding immediately, substantially can stop phenomenon wrong report occurring or fails to report.Technical solutions of the utility model simplify circuit structure, reduce manufacture difficulty and the cost of monitoring device, achieve the requirement of monitor earthquake highly sensitive, reliable working performance in early days.There is early stage electronic monitoring alarm device and be adapted at the take place frequently place such as family, school, hospital in area of earthquake and use in earthquake described in the utility model.
Description
Technical field
The utility model belongs to electronics and seismic monitoring system field, is, about a kind of earthquake, early stage electronic monitoring alarm device occurs.
Background technology
Earthquake occurs in night, and people have a rest in room, and this is maximum to the life extent of injury of people, makes people hard to guard against.If can in the moment of earthquake early period of origination, if can win tens second time, a lot of people just likely brushes past with disability or Death.Earthquake be damage envelope wide, cause life and property very harmful and be a kind of irresistible disaster, Scientific Cognition is failed effectively to grasp the generation of earthquake and is observed and predicted rule so far.
Early stage electronic monitoring alarm device occurs in earthquake described in the utility model can be early stage in generation more than 4 grades earthquakes, when very short time monitors first seismic event time, can will start sound alarm instantaneously, wake you in sleeping soundly immediately.Before violent earthquake occurs, for you win tens second extremely valuable departure time, contribute to people and evacuate to safety area rapidly, thus reduce earthquake significantly to the harm of people's life.
There is early stage electronic monitoring alarm device and adopt NPN transistor bridge diagram as core circuit in earthquake described in the utility model, be touched once run into monitoring probe, hummer is sounding immediately, substantially can stop phenomenon wrong report occurring or fails to report.Technical solutions of the utility model simplify circuit structure, reduce manufacture difficulty and the cost of monitoring device, achieve the requirement of monitor earthquake highly sensitive, reliable working performance in early days.There is early stage electronic monitoring alarm device and be adapted at the take place frequently place such as family, school, hospital in area of earthquake and use in earthquake described in the utility model.
Below describe earthquake described in the utility model in detail and early stage electronic monitoring alarm device relevant core technology content involved in implementation process occurs.
Utility model content
Goal of the invention and beneficial effect: earthquake described in the utility model early stage electronic monitoring alarm device occurs and adopts NPN transistor bridge diagram as core circuit, be touched once run into monitoring probe, hummer is sounding immediately, substantially can stop phenomenon wrong report occurring or fails to report.Technical solutions of the utility model simplify circuit structure, reduce manufacture difficulty and the cost of monitoring device, achieve the requirement of monitor earthquake highly sensitive, reliable working performance in early days.There is early stage electronic monitoring alarm device and be adapted at the take place frequently place such as family, school, hospital in area of earthquake and use in earthquake described in the utility model.
The principle of work of circuit: occur in early stage electronic monitoring alarm device circuit in earthquake, seismic signal observation circuit is made up of monitoring probe JT, resistance R1, resistance R2 and trimmer potentiometer RP, and seismic signal observation circuit and NPN transistor VT2, resistance R5, resistance R6 form bridge diagram.Form differential amplifier circuit by NPN transistor VT1, NPN transistor VT2, resistance R3 is the current-limiting resistance of hummer HA and pull-up resistor R4, is also the negative feedback common mode inhibition resistance of differential amplifier circuit simultaneously.
When not there is earthquake, it is equal that bias potential and resistance R5, the resistance R6 of NPN transistor VT1 are supplied to the changeless bias potential of NPN transistor VT2, and bridge diagram reaches balance;
When the moment that earthquake occurs, monitoring probe JT rapid short circuit resistance R1, now NPN transistor VT1 obtains bias potential, makes NPN transistor VT1 conducting, NPN transistor VT2 cut-off or trend cut-off, so hummer HA sounds a buzzer, resident family's early earthquake is reminded to occur.
Technical characteristic: early stage electronic monitoring alarm device occurs in earthquake, it comprises 6V direct supply, seismic signal observation circuit, differential amplification and buzzer drive circuit, it is characterized in that:
Seismic signal observation circuit: it is made up of monitoring probe JT, resistance R1, resistance R2 and trimmer potentiometer RP, NPN transistor VT1 base stage connects the becket JSH of monitoring probe JT and resistance R1 one end and trimmer potentiometer RP one end, the resistance R1 other end and resistance R2 one end meet the tup ZC of monitoring probe JT by metal sash weight line, resistance R2 other end connection circuit positive pole VCC, the trimmer potentiometer RP other end and movable end connection circuit ground GND thereof;
Differential amplification and buzzer drive circuit: it is by NPN transistor VT1 and hummer HA, NPN transistor VT2 and resistance R4, resistance R3, resistance R5 and resistance R6 is formed, NPN transistor VT1 emitter and NPN transistor VT2 emitter are by resistance R3 connection circuit ground GND, NPN transistor VT2 base stage connecting resistance R5 one end and resistance R6 one end, resistance R5 other end connection circuit positive pole VCC, resistance R6 other end connection circuit ground GND, NPN transistor VT1 collector connects hummer HA negative pole, hummer HA positive pole connection circuit positive pole VCC, NPN transistor VT2 collector is by resistance R4 connection circuit positive pole VCC,
6V DC power anode is connected with circuit anode VCC, and 6V DC power cathode is connected with circuit ground GND.
Accompanying drawing explanation
Accompanying drawing 1 is the circuit working schematic diagram that an early stage electronic monitoring alarm device embodiment occurs in earthquake described in the utility model; In accompanying drawing 1, the contact of monitoring probe JT is in normally open when standby.
Embodiment
Early stage electronic monitoring alarm device circuit working schematic diagram and accompanying drawing explanation is there is according to the earthquake shown in accompanying drawing 1, and according to annexation between components and parts in each several part circuit described in utility model content, and components and parts technical parameter described in embodiment requires and circuit production main points are carried out enforcement and can be realized the utility model, is further described correlation technique of the present utility model below in conjunction with embodiment.
The technical parameter of components and parts and selection requirement
The model that NPN transistor VT1, NPN transistor VT2 use is 2SC9014, currentamplificationfactorβ >=180, requires two Manifold technology parameter pairings;
Resistance all selects RTX-1/8W type, power to be 1/8W carbon resister, and the resistance of resistance R1 is 10K Ω, and the resistance of resistance R2 is 5.1K Ω, the resistance of resistance R3 is 62 Ω, the resistance of pull-up resistor R4 is 1.8K Ω, and the resistance of resistance R5 is 15K Ω, and the resistance of resistance R6 is 15K Ω;
RP is trimmer potentiometer, and its resistance is 20K Ω;
HA is hummer, selects hummer to be built-in with audio generating circuit, and operating voltage is 5V, requires that hummer static direct current resistance is about 1.8K Ω;
Direct current power source voltage is 6V, can select 4 joints 5
﹟alkaline battery is as direct supply.
Circuit production main points, circuit debugging and using method
The making of monitoring probe JT: monitoring probe JT is a kind of mechanical switch made of tup, sash weight for building selected by tup, former sash weight line uses multiply metal wire instead as metal sash weight line, and becket uses the bare copper wire of ￠ 2.5mm to bend, and its diameter is 30 ~ 36mm;
Gap between tup and becket, requires to be advisable at 2.0 ~ 2.5mm in gap, regulates by the height being elevated tup; Gap between tup and becket is less, and this device sensitivity is higher; For assurance device has enough sensitivity, require fixing hanging tup support height > 2.4m;
When circuit debugging, first the resistance of trimmer potentiometer RP is transferred to maximal value, making tup ZC in becket JSH placed in the middle (that is: normally open), is secondly slowly regulate that the resistance of trimmer potentiometer RP makes NPN transistor VT1, NPN transistor VT2 all ends;
By tup ZC and becket JSH short circuit, now NPN transistor VT1 obtains bias potential, and make NPN transistor VT1 conducting, NPN transistor VT2 cut-off or trend cut-off, so hummer HA sounds a buzzer, namely circuit debugging has accused;
For increasing the sensitivity of monitor earthquake, using two groups of monitor alarm devices if desired, being separately fixed at the corner that not chummery is not easy to be subject to human activity interference.
Circuit components layout of the present utility model, board design, outward appearance and size etc. are not gordian techniquies of the present utility model, neither the claimed technology contents of the utility model, therefore illustrate no longer one by one in the description.
Claims (1)
1. there is an early stage electronic monitoring alarm device in earthquake, and it comprises 6V direct supply, seismic signal observation circuit, differential amplification and buzzer drive circuit, it is characterized in that:
Described seismic signal observation circuit is made up of monitoring probe JT, resistance R1, resistance R2 and trimmer potentiometer RP, NPN transistor VT1 base stage connects the becket JSH of monitoring probe JT and resistance R1 one end and trimmer potentiometer RP one end, the resistance R1 other end and resistance R2 one end meet the tup ZC of monitoring probe JT by metal sash weight line, resistance R2 other end connection circuit positive pole VCC, the trimmer potentiometer RP other end and movable end connection circuit ground GND thereof;
Described differential amplification and buzzer drive circuit are by NPN transistor VT1 and hummer HA, NPN transistor VT2 and resistance R4, resistance R3, resistance R5 and resistance R6 is formed, NPN transistor VT1 emitter and NPN transistor VT2 emitter are by resistance R3 connection circuit ground GND, NPN transistor VT2 base stage connecting resistance R5 one end and resistance R6 one end, resistance R5 other end connection circuit positive pole VCC, resistance R6 other end connection circuit ground GND, NPN transistor VT1 collector connects hummer HA negative pole, hummer HA positive pole connection circuit positive pole VCC, NPN transistor VT2 collector is by resistance R4 connection circuit positive pole VCC,
Described 6V DC power anode is connected with circuit anode VCC, and 6V DC power cathode is connected with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633844.5U CN204242349U (en) | 2014-10-29 | 2014-10-29 | There is early stage electronic monitoring alarm device in earthquake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420633844.5U CN204242349U (en) | 2014-10-29 | 2014-10-29 | There is early stage electronic monitoring alarm device in earthquake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204242349U true CN204242349U (en) | 2015-04-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420633844.5U Withdrawn - After Issue CN204242349U (en) | 2014-10-29 | 2014-10-29 | There is early stage electronic monitoring alarm device in earthquake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204242349U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299368A (en) * | 2014-10-29 | 2015-01-21 | 黄宇嵩 | Electronic monitoring alarm device for early stage of earthquake |
-
2014
- 2014-10-29 CN CN201420633844.5U patent/CN204242349U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104299368A (en) * | 2014-10-29 | 2015-01-21 | 黄宇嵩 | Electronic monitoring alarm device for early stage of earthquake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150401 Effective date of abandoning: 20161012 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |