CN201562341U - Liquefied gas leakage alarm device - Google Patents
Liquefied gas leakage alarm device Download PDFInfo
- Publication number
- CN201562341U CN201562341U CN2009201763902U CN200920176390U CN201562341U CN 201562341 U CN201562341 U CN 201562341U CN 2009201763902 U CN2009201763902 U CN 2009201763902U CN 200920176390 U CN200920176390 U CN 200920176390U CN 201562341 U CN201562341 U CN 201562341U
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- Prior art keywords
- liquefied gas
- warning device
- controller
- gas
- pressure
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Abstract
The utility model discloses a liquefied gas leakage alarm device, which has multiple functions. The alarm device comprises one or a plurality of liquefied gas sensors used for detecting concentration of liquefied gas leaked into air, a buzzer and a display screen which are used for giving out audible alarm and indicating a leakage position, one or a plurality of temperature sensors for detecting temperature of an engine compartment, a buzzer and a display screen for giving out audible alarm and displaying temperature, a liquefied gas pressure sensor for detecting liquefied gas pressure of a gas cylinder, and a buzzer and a display screen for displaying liquefied gas pressure and giving out alarm for excessively high or excessively low liquefied gas pressure. An input end of a controller is connected with the one or a plurality of liquefied gas sensors, the one or a plurality of temperature sensors and the pressure sensor, and an output end is connected with the buzzers and the display screens for displaying data detected by the sensors and sending electric signals to the buzzers and the display screens when parameter exceeds specified data.
Description
Technical field
The utility model relates to a kind of gas leak alarm, and can be used for the liquefied gas is the automobile of fuel.
Background technology
It at present is the life that the automobile of fuel is being come into people gradually with the liquefied gas, but because liquefied gas is a gaseous state at normal temperature, colorless and odorless, people are difficult to discover in air, and burning-point is low, compare with vapour-liquid or diesel oil, once leak, its hazard level is higher, particularly engine in the course of the work in surface and the engine bin air themperature higher, very easily cause and burn or explosion accident.Therefore, a kind of gas leak warning device that can be applied to automobile of exploitation is necessary.In addition, high temperature and liquid gas storage tank pressure superelevation all can cause gas leak, burning even blast.
The utility model content
The purpose of this utility model just is to provide a kind of gas leak warning device, can in time send alerting signal when gas leak takes place.
The utility model adopts following technical scheme: a kind of gas leak warning device comprises:
One or more liquefied gas probes are used for detection and leak into airborne liquefied gas concentration and produce electric signal;
Hummer is used to the alerting signal of sounding;
A controller, its input end connect described liquefied gas probe, and output terminal connects described hummer, are used for sending electric signal control hummer sounding to hummer when the liquefied gas probe detects liquefied gas concentration above capping.
Can also comprise that the pilot lamp corresponding with described liquefied gas probe is connected on the output terminal of described controller, be controlled at liquefied gas probe when detecting liquefied gas concentration and surpassing capping by controller, pilot lamp sends the prompting light signal, report to the police with hummer, and help judging the leak position fast by the relevant personnel according to the detector of transmitting messages the pilot lamp correspondence alert.
Further, can also comprise temperature sensor, be connected in the input end of described controller, when detecting environment temperature and surpass the capping value, to control the warning of sounding of described hummer by controller, can also comprise that digital display screen is connected is used for the environment temperature that the displays temperature sensor records on the described controller, guarantee the safety of liquid gas storage tank and the operate as normal of engine.
Further, can also comprise pressure transducer, be connected in the input end of described controller, when detecting gas pressure and be below or above liquefied gas set pressure higher limit, to control the warning of sounding of described hummer by controller, can also comprise that digital display screen is connected is used to the gas pressure that shows that pressure transducer records on the described controller, and display digit flicker when pressure is higher or lower than setting value, so that in time adopt measure, prevent that the liquid gas storage tank superpressure from leaking or blast.
Described controller can adopt analogue circuit, also can adopt digital circuit, for example single card microcomputer or industrial computer.High-performance, 8 AVR microprocessors of low-power consumption---ATmega48 processor and peripheral circuit formation controller thereof that the utility model can adopt atmel corp to produce.The ATmega48 microprocessor is based on 8 CMOS microcontrollers of low-power consumption of the AVR risc architecture of enhancing.Because its advanced instruction set and single clock cycle instruction time, the data throughput of ATmega48 is up to 1MIPS/MHz, thereby can extenuate the contradiction of system between power consumption and processing speed.
This gas leak alarm of the present utility model, liquefied gas probe, temperature sensor and pressure transducer can be installed in the automobile engine compartment, hummer and temperature demonstration, pressure demonstration and pilot lamp are integrated on the table case and are installed in pilothouse, detecting as liquefied gas probe has liquefied gas to exist and when reaching the upper limit of concentration of setting in the engine bin, can control hummer by controller and send the buzz warning, and/or point out warning by pilot lamp, the prompting driver notes and handles, avoids causing security incident because of gas leak.By the detection of temperature sensor and pressure transducer, can make controller in engine bin, send warning when temperature superelevation or liquid gas storage tank pressure superelevation, so that in time adopt counter-measure to the present position.This warning device can also be used for the place that other uses liquefied gas except that being used for the automobile.
Description of drawings
Fig. 1 is the theory of constitution block scheme of gas leak warning device of the present utility model.
Fig. 2 is the control system circuit theory diagrams.
Embodiment
Below by specific embodiment the utility model is described in further detail, to help understanding content of the present utility model.
Gas leak warning device in the present embodiment, as shown in Figure 1, comprise four liquefied gas probe 1-4 that are used to detect liquefied gas concentration, and pressure transducer, temperature sensor, with the digital controller that is made of microprocessor system, the signal input part that pressure transducer, temperature sensor and four liquefied gas probe 1-4 are connected in microprocessor system is used to detect liquefied gas concentration, engine bin temperature in the gas pressure, engine bin of liquefied pot; Power panel provides driving power to temperature sensor, pressure transducer and four liquefied gas probes and microprocessor system.And alarm buzzer, the LED temperature shows and LED pressure shows and be connected on the output terminal of microprocessor system corresponding to probe 1 pilot lamp, probe 2 pilot lamp, probe 3 pilot lamp, probe 4 pilot lamp of four liquefied gas probe 1-4.
Input end in microprocessor system also connects a feeler switch.
Its course of work is: during the alarm operate as normal, press feeler switch and enter of short duration self check state, this moment, charactron showed that full 8-goes out-(the alarm set point value of setting), and four road liquefied gas probes pilot lamp is redness-go out-green-demonstration of going out all, sent simultaneously and ticked--ticking---sound that ticks.Recover normal condition then.
Temperature alarming
When temperature was greater than 85 ℃ in temperature sensor detects engine bin, electric signal that temperature sensor spreads out of judged through microprocessor system and shown by the charactron of temperature display, and drove the hummer warning of sounding.
Pressure alarm
The electric signal that pressure transducer spreads out of when pressure 0.0Mpa-5.0MPa is through after the microprocessor judges, and the demonstration of driving display screen LED charactron pressure is constantly glimmered and followed about 1 minute tweeting sound of hummer.When pressure transducer detects the liquid gas storage tank internal pressure and exceeds 20MPa, LED pressure show constantly flicker and hummer pipe always pressure recover normal till.
Gas leak is reported to the police
Its corresponding pilot lamp is green under the liquefied gas probe 1-4 normal operation, and its corresponding pilot lamp was not for red when the disconnection of liquefied gas probe was not worked.The liquefied gas concentration sensor of liquefied gas probe apparatus will be sensed in 5 seconds when liquefied gas has leakage, the signal of sensing is converted into electric signal is transferred to microprocessor system, microprocessor system will allow corresponding probe pilot lamp constantly glimmer and followed the hummer warning of sounding this moment.
The physical circuit of microprocessor system mainly adopts the high-performance of atmel corp's production, 8 AVR microprocessors of low-power consumption as shown in Figure 2---and ATmega48 and peripheral circuit thereof constitute.
Among Fig. 2,6,7,9,10 of socket P1 is the frequency signal input of four liquefied gas probe, and resistance in series R5, R6, R7, R8 are connected the 1st, 30,31,32 pins of mega48 processor respectively, and and power supply between be in series with pull-up resistor R1～R4.Connecting 12,13 of P1 is pressure signal Q6 and temperature signal Temp input, and 15 of P1 is that Q7 is the preserved signal input end.Temperature sensor is inserted on the socket P1, is connected the 22nd pin of mega48 processor by resistance in series R42, and is used for the filtering decon by series capacitance C8 ground connection, connects power supply to regulate temperature value by potentiometer Rp1.Comprise that also pressure transducer also is inserted on the socket P1, be connected the 19th pin of mega48 processor, and pass through potentiometer Rp2 ground connection of series connection to regulate force value by resistance in series R29.
Constitute the temperature and pressure demonstration by 74ls164 chip A2, A4 with by trinity charactron M1, the M2 of its driving.Wherein A274ls164 is the chip of serial input and line output, the Temperature numerical of mega48 processor handle conversion and pressure value numerical value are transferred to 74ls164 with the form of serial like this, 74ls164 drives the Duan Xuan of trinity charactron M1, M2, T1, T2, T3 are realized the position choosing of M1 by the control of mega48 processor, thereby realize the dynamic demonstration of temperature, T5, T6, T7 realize the position choosing of M2 by the control of mega48 processor, thereby realize the dynamic demonstration of temperature.
L1, L2, L3, L4 are that bi-colour LED is popped one's head in corresponding to four liquefied gas, drive by 74ls164 chip A3, different with the temperature and pressure demonstration is that the mega48 processor need not select signal in the position, show different colors when probe is operated in the different conditions pilot lamp, these variations are controlled by the mega48 processor.
The 2nd pin of mega48 processor connects hummer Z1 by a triode T4 on-off circuit, drives triode T4 and make its conducting when the mega48 processor sends alerting signal, sends chimes of doom so the Z1 buzzer circuit forms the loop.
Feeler switch K1: the signal of input single-chip microcomputer is that high level mega48 processor does not process when button is not pressed, and the signal of input single-chip microcomputer is that low level mega48 processor is done corresponding feeler switch function treatment when button is pressed.
Claims (10)
1. a gas leak warning device is characterized in that, comprising:
One or more liquefied gas probes are used for detection and leak into airborne liquefied gas concentration and produce electric signal;
Hummer is used to the alerting signal of sounding;
A controller, its input end connect described liquefied gas probe, and output terminal connects described hummer, are used for sending electric signal control hummer sounding to hummer when the liquefied gas probe detects liquefied gas concentration above capping.
2. gas leak warning device as claimed in claim 1, it is characterized in that: also comprise and the corresponding pilot lamp of described liquefied gas probe, be connected on the output terminal of described controller, be controlled at liquefied gas probe when detecting liquefied gas concentration and surpassing capping by controller, pilot lamp sends the prompting light signal.
3. gas leak warning device as claimed in claim 1 or 2, it is characterized in that: comprise that also temperature sensor is connected in the input end of described controller, when detecting environment temperature and surpass the capping value, to control the warning of sounding of described hummer by controller.
4. gas leak warning device as claimed in claim 3 is characterized in that: also comprise display screen, be connected and be used for the environment temperature numerical value that the displays temperature sensor records on the described controller.
5. gas leak warning device as claimed in claim 1 or 2, it is characterized in that: also comprise pressure transducer, be connected in the input end of described controller, when detecting gas pressure and be below or above the liquefied gas set pressure, to control the warning of sounding of described hummer by controller.
6. gas leak warning device as claimed in claim 5, it is characterized in that: also comprise display screen, be connected and be used to the gas pressure numerical value that shows that pressure transducer records on the described controller, and be controlled at gas pressure numeral flicker when being below or above setup pressure value by described controller.
7. gas leak warning device as claimed in claim 1 or 2 is characterized in that: described controller is made of ATmega48 processor and peripheral circuit thereof.
8. gas leak warning device as claimed in claim 7 is characterized in that: the 2nd pin of described ATmega48 processor connects described hummer by a transistor switching circuit; Described liquefied gas probe is connected the input pin of ATmega48 processor by resistance in series, and and power supply between be in series with pull-up resistor.
9. gas leak warning device as claimed in claim 7 is characterized in that: described ATmega48 processor also drives bi-colour LED by 74ls164 chip A3.
10. gas leak warning device as claimed in claim 7, it is characterized in that: also comprise temperature sensor, be connected the 22nd pin of ATmega48 processor by resistance in series, and be used for the filtering decon, and be connected power supply by potentiometer to regulate temperature value by series capacitance ground connection; Also comprise pressure transducer, be connected the 19th pin of ATmega48 processor, and pass through potentiometer ground connection of series connection to regulate force value by resistance in series; The output of ATmega48 processor is also by 74ls164 chip A2, A4 with by the trinity charactron M1 of its driving, temperature and pressure display circuit that M2 constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201763902U CN201562341U (en) | 2009-09-04 | 2009-09-04 | Liquefied gas leakage alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201763902U CN201562341U (en) | 2009-09-04 | 2009-09-04 | Liquefied gas leakage alarm device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562341U true CN201562341U (en) | 2010-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201763902U Expired - Fee Related CN201562341U (en) | 2009-09-04 | 2009-09-04 | Liquefied gas leakage alarm device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562341U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104290654A (en) * | 2014-03-24 | 2015-01-21 | 郑州宇通客车股份有限公司 | Vehicle-mounted gas fuel safety monitoring system and monitoring method |
| CN106766661A (en) * | 2017-01-19 | 2017-05-31 | 河南中医药大学 | Refrigerator refrigerant leakage alarm |
| CN110491051A (en) * | 2019-08-29 | 2019-11-22 | 南京凯盟仕电子科技有限公司 | A kind of sensor and working principle of detection alarm |
-
2009
- 2009-09-04 CN CN2009201763902U patent/CN201562341U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104290654A (en) * | 2014-03-24 | 2015-01-21 | 郑州宇通客车股份有限公司 | Vehicle-mounted gas fuel safety monitoring system and monitoring method |
| CN106766661A (en) * | 2017-01-19 | 2017-05-31 | 河南中医药大学 | Refrigerator refrigerant leakage alarm |
| CN110491051A (en) * | 2019-08-29 | 2019-11-22 | 南京凯盟仕电子科技有限公司 | A kind of sensor and working principle of detection alarm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20170904 |