CN201993873U - Electric fire disaster warning module - Google Patents
Electric fire disaster warning module Download PDFInfo
- Publication number
- CN201993873U CN201993873U CN2011201086726U CN201120108672U CN201993873U CN 201993873 U CN201993873 U CN 201993873U CN 2011201086726 U CN2011201086726 U CN 2011201086726U CN 201120108672 U CN201120108672 U CN 201120108672U CN 201993873 U CN201993873 U CN 201993873U
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- circuit
- warning module
- signal
- electrical fire
- early warning
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Abstract
The utility model relates to the field of electronic circuits, in particular to an electric fire disaster warning module, which comprises a temperature signal acquisition circuit and a single-chip microprocessor control circuit. Signals acquired by the temperature signal acquisition circuit are transmitted to an A/D (analog/digital) converting circuit by the aid of an optional amplifier rectifying regulating circuit, and the A/D converting circuit output data signals to the single-chip microprocessor control circuit. The single-chip microprocessor control circuit controls output and is connected with an RS485 communication interface circuit, an indicator module and a wireless transmitting circuit. The electric fire disaster warning module acquires signals by the aid of a temperature sensor, when an acquiring cable of the temperature sensor is overheated, data converted from the signals by A/D conversion is transmitted to the control center by a single-chip microprocessor, and accordingly, professional wiremen can eliminate faults in time, and fire disasters are avoided.
Description
Technical field
The utility model relates to electronic circuit field, particularly be a kind of electrical fire early warning module.
Background technology
Raising along with name of the country expanding economy and resident's modern life level, the hidden danger that electrical fire brings also increases severely thereupon, the electrical fire frequency happening in accident is more and more higher, the security of the lives and property to the country and people has caused severe impairment, according to statistics, electrical fire in recent years accounts for 30% of total fire sum, is position first of all kinds of fire, and the loss that electrical fire causes has accounted for about 40% of total fire damage.The main performance of electrical fire generation is become flexible owing to the cable section header or loose contact causes heating to produce electrical fire, traditional electrical fire pick-up unit is mainly gathered signals such as electric current, voltage and is judged whether its index transfinites, can not discern indication to the various fault types of electrical fire reports to the police, cause long-time power failure, brought great inconvenience for people's life.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of electrical fire early warning module is provided.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of electrical fire early warning module, comprise temperature signal collection circuit and single chip machine controlling circuit, the signal that described temperature signal collection circuit is gathered through the amplifier rectification adjust circuit transmission to A the D change-over circuit, again by A the data-signal of D change-over circuit output send to single chip machine controlling circuit, described single chip machine controlling circuit control output connects RS485 communication interface circuit, indicating lamp module and radio transmitter.
Described temperature signal collection circuit adopts the temperature sensor acquired signal.
Described single chip machine controlling circuit also connects a watchdog circuit.
Described RS485 communication interface circuit is connected to com port by 75176 communication interface chips.
The output signal of described radio transmitter sends to wireless receiving circuit.
By adopting above-mentioned technical scheme, the beneficial effects of the utility model are: this module adopts the temperature sensor acquired signal, when temperature sensor is gathered the cable overtemperature, its signal is after the A/D data-switching, by single-chip microcomputer with data remote to control center, by the timely eliminating of professional electrician personnel, reach the purpose of fire preventing to fault.
Description of drawings
Fig. 1 is a frame assumption diagram of the present utility model;
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
As shown in Figure 1, a kind of electrical fire early warning module of the present utility model, comprise temperature signal collection circuit 1 and single chip machine controlling circuit 2, the signal that described temperature signal collection circuit 1 is gathered through the amplifier rectification adjust circuit 11 be transferred to A D change-over circuit 12, again by A the data-signal of D change-over circuit 12 output send to single chip machine controlling circuit 2, described single chip machine controlling circuit control output connects RS485 communication interface circuit 21, indicating lamp module 22 and radio transmitter 23, described single chip machine controlling circuit 2 also connects a watchdog circuit 3, described RS485 communication interface circuit 21 is connected to com port by 75176 communication interface chips, and the output signal of described radio transmitter 23 sends to wireless receiving circuit 24.
As shown in Figure 2, by temperature sensor QK, resistance R 1, resistance R 2, diode D1, capacitor C 1 grade is formed temperature signal collection circuit, temperature sensor QK acts on the collecting temperature signal, detect faint d. c. voltage signal, after signal is adjusted, this signal is connected to the 3rd pin of operational amplifier U2, be input to the 2nd pin of A/D conversion chip U3 by the amplifying signal of the 6th pin of operational amplifier U2 output, after A/D conversion chip U3 internal data A/D conversion, be input to through the 2nd of single-chip microcomputer U1,3, the I/O end of 5 pin carries out data communication, adjust resistance R 4 and can change the computing magnitude of voltage, when temperature sensor QK touches cable body surface temperature and reaches certain value, faint temperature voltage signal switches output through single-chip microcomputer U1 and amplifies through operational amplifier U2 computing, again through the inner A/D conversion of A/D conversion chip U3, outputting data signals is divided into three tunnel control outputs through U1 internal arithmetic control, the first via is by the 11st pin output low level of U1, driven for emitting lights diode (LED) 2 is lighted luminous, the expression temperature over-range; The 10th, 11,16 pin of secondary route single-chip microcomputer U1 and the 1st, 2,3,4 pin of 75176 communication interface chip U5 are formed the RS485 communication interface circuit alerting signal are sent to PC; Third Road makes triode Q1 conducting by the 30th pin output low-potential signal of single-chip microcomputer U1 through resistance R 10, be input to the 2nd pin of FDD-5 transmitter module U6, and deliver to its 3rd pin CP modulation signal input end, high-frequency signal to emission is modulated, antenna is promptly launched modulated frequency electromagnetic waves to JDD-5 receiver module U7, the 4th pin audio signal output end of JDD-5 receiver module U7 directly drives common electrical dynamic formula YD loudspeaker sounding, the 2nd pin data output end output low level of JDD-5 receiver module U7 makes LED 1 get electroluminescence, the expression receiver receives the alerting signal of extension set, and reminds people is to the fire treatment of dangerous situation.
Above-described only is a preferred embodiment of the present utility model, can not limit the scope that this practicality is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.
Claims (5)
1. electrical fire early warning module, it is characterized in that: comprise temperature signal collection circuit (1) and single chip machine controlling circuit (2), the signal that described temperature signal collection circuit (1) is gathered through the amplifier rectification adjust circuit (11) be transferred to A D change-over circuit (12), again by A the data-signal of D change-over circuit (12) output send to single chip machine controlling circuit (2), described single chip machine controlling circuit control output connects RS485 communication interface circuit (21), indicating lamp module (22) and radio transmitter (23).
2. electrical fire early warning module according to claim 1 is characterized in that: described temperature signal collection circuit (1) adopts the temperature sensor acquired signal.
3. electrical fire early warning module according to claim 1 is characterized in that: described single chip machine controlling circuit (2) also connects a watchdog circuit (3).
4. electrical fire early warning module according to claim 1 is characterized in that: described RS485 communication interface circuit (21) is connected to com port by 75176 communication interface chips.
5. electrical fire early warning module according to claim 1 is characterized in that: the output signal of described radio transmitter (23) sends to wireless receiving circuit (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201086726U CN201993873U (en) | 2011-04-14 | 2011-04-14 | Electric fire disaster warning module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201086726U CN201993873U (en) | 2011-04-14 | 2011-04-14 | Electric fire disaster warning module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201993873U true CN201993873U (en) | 2011-09-28 |
Family
ID=44670354
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201086726U Expired - Fee Related CN201993873U (en) | 2011-04-14 | 2011-04-14 | Electric fire disaster warning module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201993873U (en) |
-
2011
- 2011-04-14 CN CN2011201086726U patent/CN201993873U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20130414 |