CN200972056Y - Detector for combustible gas alarm - Google Patents

Detector for combustible gas alarm Download PDF

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Publication number
CN200972056Y
CN200972056Y CN 200620010850 CN200620010850U CN200972056Y CN 200972056 Y CN200972056 Y CN 200972056Y CN 200620010850 CN200620010850 CN 200620010850 CN 200620010850 U CN200620010850 U CN 200620010850U CN 200972056 Y CN200972056 Y CN 200972056Y
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CN
China
Prior art keywords
pin
power supply
connects
gas alarm
alarm
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.)
Expired - Fee Related
Application number
CN 200620010850
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Chinese (zh)
Inventor
秦旭昌
郭敬江
潘广斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JINAN CHANGQING COMPUTER APPLICATION CO Ltd
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JINAN CHANGQING COMPUTER APPLICATION CO Ltd
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Priority to CN 200620010850 priority Critical patent/CN200972056Y/en
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Publication of CN200972056Y publication Critical patent/CN200972056Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses a surveymeter for combustible gas alarm, pertaining to an instrument surveymeter, in particular to a surveymeter for combustible gas. The surveymeter comprises a stabilized voltage supply and a testing circuit and is structurally characterized in that the testing circuit adopts a singlechip 16F873A as a CPU which comprises a voltage current converter, a tank circuit, a keyboard signal sampler, a display circuit and a programming port. When in use, users merely need to insert the interface of a detected combustible gas alarm onto a keyboard interface and to press a testing switch, the device may then conduct an intelligent control simulation to the combustible gas alarm in a bid to realize an artificial operation towards the alarm and then make a judgment whether or not the alarm is normal. If the alarm is judged to be abnormal, the device makes a judgment on which part on earth of the alarm having suffered from a failure according to the responding blinking display of an indicator light, thereby enhancing the detecting efficiency and quality greatly.

Description

The flammable gas alarm detector
Technical field
The utility model relates to the instrument check device, particularly the detection device of flammable gas alarm.
Background technique
In the production process of flammable gas alarm, the quality of controller performance and some mistakes that cause in welding process are detected be absolutely necessary.But traditional detection all is to choose according to detecting step carrying out step by step, with the welding mistake on the eyes observation circuit board, as rosin joint, leaks weldering, mistake weldering etc.; To performance detection be exactly by manually to the corresponding prober of inflammable gas controller see with the calibrating gas inflation demonstration situation of gas rising controller of controller and alarm setting value determine whether normal; Whether go to measure the output situation that corresponding output sees him with multimeter normal; Plugging panel goes to look at that by each key on the basis weight controller whether the situation of each manual function, corresponding key press the corresponding function that will realize etc. with hand.Above detecting method operating efficiency is low, the wasting manpower and material resources, and the controller omission appears easily, false retrieval is not easy to form characterization processes, restricts large batch of production.Still there is not at present special-purpose detecting instrument.
The model utility content
The purpose of this utility model provides a kind of technological scheme of the novel flammable gas alarm detector that can detect the parameters and the performance of flammable gas alarm
The technical solution of the utility model is, a kind of flammable gas alarm detector, comprise stabilized power supply, testing circuit, it is characterized in that: it is central processing unit (CPU) that described testing circuit adopts single-chip microcomputer 16F873A, comprise voltage current adapter, oscillating circuit, keyboard signal collector, display circuit and programming port, its pin 1 of 16F876A and 11 on pin are equipped with reset key K1, detect key K2, pin 1 is being connected programming port with pin 27, pin 28, pin 20 is the power supply input pin of 16F876A, and pin 19 is a grounding leg.
Described stabilized power supply power supply is by C1, and E1, R1 connect power supply integrated package of pressure-stabilizing 34063 pin 1, and pin 1 connecting pin 8,7 pin is again formed input end; Pin 3 connects C2 to ground, the direct ground connection of 4 pin, and pin 2 connects D1, and L1 and internal wiring are formed the high frequency oscillation circuit, and LI connects R2, and R2 connects R3, and R3 connects power supply to ground, and 5 pin connect R2, and R3 forms the concussion modulator.
Described oscillating circuit is by pin 9, and pin 10 connects the JZ crystal oscillator and corrective capacity C5, C6 form.
Described voltage current adapter is being connected the resistance R 8 of series connection by pin 13, R7 and capacitor C 7 in parallel, the integration circuit that C8 forms is connected to 3 pin of LM358 by R10,1 pin of LM358 connects the base stage of R13 to BG1, and the emitter of BG1 is connected to 2 pin of LM358 by resistance R 14, and 2 pin pass through R11 ground connection, emitter also passes through R15, R12 is connected to 3 pin of LM358, and inductance L 2 is by connecting R15, and R12 is to the electric current output interface.
The pin 14-18 of described keyboard signal collector is connected to the base stage of BG2-BG6 respectively by resistance R 9, R25, R24, R23, R22, the collector electrode of BG2-BG6 is connected respectively to the pin 5-pin 1 of keyboard interface JP, and its emitter is connected to the pin 6 of keyboard interface JP.
Described display circuit is connected on LEDJP, LEDBH, LEDBL, the LEDD by resistance R 19, R18, R17, R16 respectively by pin 23-pin 26, the other end of luminotron tube is connected with power supply, LEDD, LEDBL, LDEBH, LEDJP is respectively power supply and normally indicates, and low section is reported to the police and is indicated, high section is reported to the police and is indicated, and keypad function detects indication.
14 pin of single-chip microcomputer 16F873A output high level made triode BG2 conducting that the control valve key of controller is pressed when the detection device that uses the utility model to provide detected, controller is controlled valve control, control accordingly then on the pin 2 that the pin 4 of threshold voltage by keyboard interface (JP) collect single-chip microcomputer and judge that by the voltage of two pin this key is bad, if single-chip microcomputer just is judged as in normal range (NR).Then pin 14 is changed to low level, abandons detection the control valve key.The detection of carrying out next key is put high level to pin 15 presses triode BG3 conducting simulation ventil, the voltage signal that detection has the pin 4 of keyboard control interface (JP) to transmit, if see that by the check of monolithic under-chassis 2 whether ventil so just is being judged as normally, puts the low detection of abandoning ventil to pin 15 then in normal range (NR).The detection of carrying out next key is put height to pin 16 presses triode BG4 conducting simulation self check key, pin 4 by keyboard interface (JP) passes the voltage signal of coming, single-chip microcomputer is judged this key or bad if good, and pin 16 is put the low detection of decontroling the self check button.Carry out the detection of next pin then, put pin 17 and be high level, make triode BG5 conducting, the analog reset key is pressed, the voltage of coming by pin 4 biographies of keyboard interface (JP) judges whether in normal range (NR) if just pin 17 is put the low detection of decontroling the self check key.The pin 18 of putting single-chip microcomputer then is for high, triode BG6 conducting simulation air draft key is pressed, pin 4 by keyboard interface (JP) passes to monolithic under-chassis 2 and detects, if voltage is just put pin 18 for low in normal scope, light the LEDJP lamp simultaneously, represent that keyboard has problem if these 5 keys have a defective LEDJP of detection constantly to glimmer.
The beneficial effects of the utility model are only to need the parameter programming of the combustible gas alarming controller that detects according to need to be stored into this detection device, detected combustible gas alarm interface is inserted into presses detecting switch on the keyboard interface, equipment just can carry out the intelligent control simulation to the combustible gas alarm to be realized manually the operation of controller being judged then whether alarm is normal, if undesired can the flicker according to the tutorial light of response shows that there is fault in that part of judging alarm, detection efficiency and quality have been improved greatly.
Description of drawings
Accompanying drawing 1 is an electrical block diagram of the present utility model.
Embodiment
Embodiment of the present utility model is, as shown in the figure:
Embodiment 1, a kind of flammable gas alarm detector, comprise stabilized power supply, testing circuit, it is characterized in that: it is central processing unit (CPU) that described testing circuit adopts single-chip microcomputer 16F873A, comprises voltage current adapter, oscillating circuit, keyboard signal collector, display circuit and programming port, and its pin 1 of 16F876A and 11 on pin are equipped with reset key K1, detect key K2, pin 1 is being connected programming port with pin 27, pin 28, and pin 20 is the power supply input pin of 16F876A, and pin 19 is a grounding leg.
The stabilized power supply input voltage passes through C1 for the 24V dc power supply, and E1, R1 connect power supply integrated package of pressure-stabilizing 34063 pin 1, and pin 1 connecting pin 8,7 pin is again formed input end; Pin 3 connects C2 to ground, the direct ground connection of 4 pin, pin 2 connects D1, and L1 and internal wiring are formed the high frequency oscillation circuit, LI connects R2, R2 connects R3, and R3 connects power supply to ground, and 5 pin connect R2, R3, form the concussion modulator, modulate one 5 DC electrical source, this 5V provides the energy for light emitting diode and single-chip microcomputer.
Oscillating circuit is by pin 9, and corrective capacity C5, C6 that pin 10 connects JZ crystal oscillator and 22p form.
Voltage current adapter is being connected the resistance R 8 of series connection by pin 13, R7 and capacitor C 7 in parallel, the integration circuit that C8 forms is connected to 3 pin of LM358 by R10,1 pin of LM358 connects the base stage of R13 to BG1, the emitter of BG1 is connected to 2 pin of LM358 by resistance R 14,2 pin are by R11 ground connection, emitter also passes through R15, R12 is connected to 3 pin of LM358, inductance L 2 is by connecting R15, R12 is to the electric current output interface, voltage current adapter 0~~the 5V voltage transitions becomes 0~~electric current of 30mA is used for the signal of input controller of analog prober and accepts situation.
The pin 14-18 of keyboard signal collector is connected to the base stage of BG2-BG6 respectively by resistance R 9, R25, R24, R23, R22, the collector electrode of BG2-BG6 is connected respectively to the pin 5-pin 1 of keyboard interface JP, and its emitter is connected to the pin 6 of keyboard interface JP.
Display circuit is connected on LEDJP, LEDBH, LEDBL, the LEDD by resistance R 19, R18, R17, R16 respectively by pin 23-pin 26, the other end of luminotron tube is connected with power supply, LEDD, LEDBL, LDEBH, LEDJP is respectively power supply and normally indicates, and low section is reported to the police and is indicated, high section is reported to the police and is indicated, and keypad function detects indication.
14 pin of single-chip microcomputer 16F873A output high level makes triode BG2 conducting that the control valve key of controller is pressed when detecting, controller is controlled valve control, control accordingly then on the pin 2 that the pin 4 of threshold voltage by keyboard interface (JP) collect single-chip microcomputer and judge that by the voltage of two pin this key is bad, if single-chip microcomputer just is judged as in normal range (NR).Then pin 14 is changed to low level, abandons detection the control valve key.The detection of carrying out next key is put high level to pin 15 presses triode BG3 conducting simulation ventil, the voltage signal that detection has the pin 4 of keyboard control interface (JP) to transmit, if see that by the check of monolithic under-chassis 2 whether ventil so just is being judged as normally, puts the low detection of abandoning ventil to pin 15 then in normal range (NR).The detection of carrying out next key is put height to pin 16 presses triode BG4 conducting simulation self check key, pin 4 by keyboard interface (JP) passes the voltage signal of coming, single-chip microcomputer is judged this key or bad if good, and pin 16 is put the low detection of decontroling the self check button.Carry out the detection of next pin then, put pin 17 and be high level, make triode BG5 conducting, the analog reset key is pressed, the voltage of coming by pin 4 biographies of keyboard interface (JP) judges whether in normal range (NR) if just pin 17 is put the low detection of decontroling the self check key.The pin 18 of putting single-chip microcomputer then is for high, triode BG6 conducting simulation air draft key is pressed, pin 4 by keyboard interface (JP) passes to monolithic under-chassis 2 and detects, if voltage is just put pin 18 for low in normal scope, light the LEDJP lamp simultaneously, represent that keyboard has problem if these 5 keys have a defective LEDJP of detection constantly to glimmer.

Claims (6)

1. flammable gas alarm detector, comprise stabilized power supply, testing circuit, it is characterized in that: it is central processing unit (CPU) that described testing circuit adopts single-chip microcomputer 16F873A, comprise voltage current adapter, oscillating circuit, keyboard signal collector, display circuit and programming port, its pin 1 of 16F876A and 11 on pin are equipped with reset key K1, detect key K2, and pin 1 is being connected programming port with pin 27, pin 28, pin 20 is the power supply input pin of 16F876A, and pin 19 is a grounding leg.
2. according to the determined flammable gas alarm detector of claim 1, it is characterized in that: described stabilized power supply power supply is by C1, and E1, R1 connect power supply integrated package of pressure-stabilizing 34063 pin 1, and pin 1 connecting pin 8,7 pin is again formed input end; Pin 3 connects C2 to ground, the direct ground connection of 4 pin, and pin 2 connects D1, and L1 and internal wiring are formed the high frequency oscillation circuit, and LI connects R2, and R2 connects R3, and R3 connects power supply to ground, and 5 pin connect R2, and R3 forms the concussion modulator.
3. according to the determined flammable gas alarm detector of claim 1, it is characterized in that: described oscillating circuit is by pin 9, and pin 10 connects the JZ crystal oscillator and corrective capacity C5, C6 form.
4. according to the determined flammable gas alarm detector of claim 1, it is characterized in that: described voltage current adapter is being connected the resistance R 8 of series connection by pin 13, R7 and capacitor C 7 in parallel, the integration circuit that C8 forms is connected to 3 pin of LM358 by R10,1 pin of LM358 connects the base stage of R13 to BG1, the emitter of BG1 is connected to 2 pin of LM358 by resistance R 14,2 pin are by R11 ground connection, emitter also passes through R15, R12 is connected to 3 pin of LM358, inductance L 2 is by connecting R15, and R12 is to the electric current output interface.
5. according to the determined flammable gas alarm detector of claim 1, it is characterized in that: the pin 14-18 of described keyboard signal collector is connected to the base stage of BG2-BG6 respectively by resistance R 9, R25, R24, R23, R22, the collector electrode of BG2-BG6 is connected respectively to the pin 5-pin 1 of keyboard interface JP, and its emitter is connected to the pin 6 of keyboard interface JP.
6. according to the determined flammable gas alarm detector of claim 1, it is characterized in that: described display circuit is connected on LEDJP, LEDBH, LEDBL, the LEDD by resistance R 19, R18, R17, R16 respectively by pin 23-pin 26, the other end of luminotron tube is connected with power supply, LEDD, LEDBL, LDEBH, LEDJP is respectively power supply and normally indicates, low section warning indication, high section is reported to the police and is indicated, and keypad function detects indication.
CN 200620010850 2006-10-18 2006-10-18 Detector for combustible gas alarm Expired - Fee Related CN200972056Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620010850 CN200972056Y (en) 2006-10-18 2006-10-18 Detector for combustible gas alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620010850 CN200972056Y (en) 2006-10-18 2006-10-18 Detector for combustible gas alarm

Publications (1)

Publication Number Publication Date
CN200972056Y true CN200972056Y (en) 2007-11-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620010850 Expired - Fee Related CN200972056Y (en) 2006-10-18 2006-10-18 Detector for combustible gas alarm

Country Status (1)

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CN (1) CN200972056Y (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109738685A (en) * 2019-01-25 2019-05-10 浙江聚森检测科技有限公司 A kind of stationary gas alarm detection protection against electric shock calibration cover

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109738685A (en) * 2019-01-25 2019-05-10 浙江聚森检测科技有限公司 A kind of stationary gas alarm detection protection against electric shock calibration cover

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C19 Lapse of patent right due to non-payment of the annual fee
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