CN203260147U - Temperature detection device for early fire in vehicle engine compartment - Google Patents
Temperature detection device for early fire in vehicle engine compartment Download PDFInfo
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- CN203260147U CN203260147U CN 201320205542 CN201320205542U CN203260147U CN 203260147 U CN203260147 U CN 203260147U CN 201320205542 CN201320205542 CN 201320205542 CN 201320205542 U CN201320205542 U CN 201320205542U CN 203260147 U CN203260147 U CN 203260147U
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Abstract
The utility model discloses a temperature detection device for early fire in a vehicle engine compartment. The temperature detection device comprises a plurality of temperature sensors, a single chip microcomputer, a liquid crystal display screen, an alarm circuit and a keyboard circuit. The temperature sensors adopt stainless steel package and are respectively installed at nodes of a fuel system in the engine compartment. The temperature sensors are respectively connected to corresponding input ends of the single chip microcomputer, the keyboard circuit is connected to a setting input end of the single chip microcomputer, and the liquid crystal display screen and the alarm circuit are respectively connected to corresponding output ends of the single chip microcomputer. During work, temperature values of the nodes of the fuel system in the engine compartment are measured through the temperature sensors and are displayed on the liquid crystal display screen. In the early stage of a fire, the temperature rises quickly and sharply. A system judges whether a fire occurs through a data fusion method according to the temperature change of the nodes and carries out acousto-optic alarming so that personnel can take fire extinguishing measures in the early stage of a vehicle fire, thus effectively reducing property loss and casualties.
Description
Technical field
The utility model relates to the fire monitoring that a kind of automotive engine compartment failure of fuel system causes, this device is based on that temperature significantly rises in the early stage cabin of fire, by Simultaneous Monitoring temperature and temperature rise rate, the generation of synthetic determination fire on the basis of data fusion.
Background technology
In recent years along with the reinforcement of economic activity, living standards of the people improve constantly, automobile has become popular main flow trip instrument, because the imperfection of automobile technology technology a few years ago, have the problems such as security is not high, technique is poor greatly in the automobile of possessing now, annual automobile fire has all caused huge economic loss and casualties.
Automobile fire mainly occurs in automotive fuel oil system, in electrical system and the exhaust system.Oil piping system is complicated in the engine nacelle, in use can wear out because of corrosion collision, the reasons such as vibration cause container and pipeline breaking, joint is loosening, and the oil switch phenomenon such as be not closed completely occurs, and motor car engine generally adopts gasoline or diesel oil to act as a fuel, if on the solid combustible of oil and gas leakage in car, run into high temperature heat source or electric spark, very easily ignite, cause the cabin body on fire.Under normal circumstances in the nacelle temperature generally between 75 ° of C～95 ° C, and about 300 ° of C of the thermal insulation board temperature of gas outlet.Auto electric short circuit, leak current fault contact resistance are excessive etc. also is the main reason of automobile fire.During Initial Stage of Fire, because the heat conduction, it is fast that body interior each part temperatures in cabin has ascending velocity in the short time, and ascensional range is large, and this temperature sensing in early stage for fire provides may.The utility model can be judged at the utmost point generation of fire in the short time, effectively avoided property loss and casualties, is with a wide range of applications.
The utility model content
The purpose of this utility model is the fire that causes for present automotive engine compartment fault, a kind of reliable automobile engine nacelle incipient fire temperature detection device is proposed, it can detect incipient fire in the engine nacelle, and the output early warning signal, thereby effectively contain the generation of automotive engine compartment fault fire.
To achieve these goals, the utility model adopts following technical scheme:
Automobile engine nacelle incipient fire temperature detection device comprises temperature sensor, single-chip microcomputer, LCDs, warning circuit and keyboard circuit;
Temperature sensor has a plurality of, all adopts the stainless steel packaged type, and each temperature sensor is installed on respectively each node of fuel system in the engine nacelle;
Each temperature sensor is connected to the respective input of single-chip microcomputer, and keyboard circuit is connected in the input end that arranges of single-chip microcomputer, and LCDs and warning circuit are connected to the corresponding output end of single-chip microcomputer.
The output terminal of above-mentioned single-chip microcomputer also is connected with communication module.
The output terminal of above-mentioned single-chip microcomputer also is connected with relay.
The said temperature sensor adopts single-line type high-precision digital temperature sensor.
After adopting such scheme, automobile engine nacelle incipient fire temperature detection device of the present utility model by fuel system each point temperature value in each temperature sensor measurement engine nacelle, and shows in real time by LCDs.Keyboard circuit is used for the initialization system parameter.In the engine work situation, the fuel system temperature keeps stable small size shake.Temperature value fast rise in early stage occurs in fire, and the temperature value of each Nodes of single-chip microcomputer time recording also draws temperature rate-of-rise by computing, utilizes temperature and temperature rise rate threshold value, comprehensively judges the generation of fire by fuzzy reasoning.When judging that fire occurs, warning circuit begins to report to the police.Alert frequency is by Single-chip Controlling, when only having Single Point of Faliure, alert frequency is lower, during multipoint fault, alert frequency can raise, can effectively judge the failure of fuel system origination point thus, passengers inside the car occur can in time take the fire extinguishing measure in early days at automobile fire, effectively reduce property loss and casualties.
This device Simultaneous Monitoring temperature and temperature rise rate, the generation of fire in the synthetic determination nacelle on the basis of fuzzy reasoning has improved reliability and the stability of this device.
What communication module was used for single-chip microcomputer and main control host computer communicates by letter convenient operation personnel's remote monitoring.
Relay is used for starting the interior automatically controlled fire-protection equipment of car puts out a fire to the shipping cabin, can play the function of safeguard protection.
Description of drawings
Fig. 1 is ware circuit synoptic diagram of the present utility model.
Embodiment
In order better to understand the technical solution of the utility model, describe system architecture of the present utility model and technology path in detail below in conjunction with accompanying drawing:
With reference to shown in Figure 1, automobile engine nacelle incipient fire temperature detection device of the present utility model, hardware system comprises in-situ measurement part and centralized control part, in-situ measurement partly is temperature sensor 1, and centralized control partly comprises single-chip microcomputer 2, LCDs 3, alarm lamp 4, hummer 5, relay 6, communication module 7 and keyboard circuit 8.
Each temperature sensor 1 is connected to the respective input of single-chip microcomputer 2, and keyboard circuit 8 is connected in the input end that arranges of single-chip microcomputer, and LCDs 3, alarm lamp 4, hummer 5, relay 6 and communication module 7 are connected to the corresponding output end of single-chip microcomputer 2.Automobile engine nacelle incipient fire temperature detection device of the present utility model during work, is measured the temperature value of each node of fuel system in engine nacelle by each temperature sensor 1, and is shown in real time by LCDs 3.Keyboard circuit 8 is used for the initialization system parameter.In the engine work situation, each regional temperature value of engine nacelle is comparatively stable, and the fuel system temperature keeps stable small size shake.Occur early stage in fire, and internal zone dividing territory, cabin temperature significantly rises, and the temperature value of single-chip microcomputer 2 each Nodes of time recording also draws temperature rate-of-rise, the generation of synthetic determination fire on the basis of data fusion by computing.Then output alarm signal is to alarm lamp 4 and hummer 5, and alarm lamp 4 and 5 meeting while of hummer sound and light alarm send distress signal by sound and light alarm, and adopting an effective measure prevents further spreading of fire.Alarm lamp 4 is controlled by single-chip microcomputer 2 with the alert frequency of hummer 5, and when only having Single Point of Faliure, alert frequency is lower, and during multipoint fault, alert frequency can raise, and can effectively judge the failure of fuel system origination point thus.
This device comprehensive judgement temperature rise rate and temperature value by design temperature and temperature rise rate threshold value, by fuzzy reasoning, are comprehensively judged the generation of nacelle fire, have improved reliability and the stability of this device.What communication module 7 was used for single-chip microcomputer 2 and main control host computer communicates by letter convenient operation personnel's remote monitoring.Relay 6 is used for starting automatically controlled fire-protection equipment in the car, can play the function of safeguard protection.
Claims (4)
1. automobile engine nacelle incipient fire temperature detection device is characterized in that: comprise temperature sensor, single-chip microcomputer, LCDs, warning circuit and keyboard circuit;
Temperature sensor has a plurality of, all adopts the stainless steel packaged type, and each temperature sensor is installed on respectively each node of fuel system in the engine nacelle;
Each temperature sensor is connected to the respective input of single-chip microcomputer, and keyboard circuit is connected in the input end that arranges of single-chip microcomputer, and LCDs and warning circuit are connected to the corresponding output end of single-chip microcomputer.
2. automobile engine nacelle incipient fire temperature detection device according to claim 1, it is characterized in that: the output terminal of above-mentioned single-chip microcomputer also is connected with communication module.
3. automobile engine nacelle incipient fire temperature detection device according to claim 1, it is characterized in that: the output terminal of above-mentioned single-chip microcomputer also is connected with relay.
4. automobile engine nacelle incipient fire temperature detection device according to claim 1 is characterized in that: said temperature sensor employing single-line type high-precision digital temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320205542 CN203260147U (en) | 2013-04-22 | 2013-04-22 | Temperature detection device for early fire in vehicle engine compartment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320205542 CN203260147U (en) | 2013-04-22 | 2013-04-22 | Temperature detection device for early fire in vehicle engine compartment |
Publications (1)
| Publication Number | Publication Date |
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| CN203260147U true CN203260147U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320205542 Expired - Fee Related CN203260147U (en) | 2013-04-22 | 2013-04-22 | Temperature detection device for early fire in vehicle engine compartment |
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| CN (1) | CN203260147U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103761828A (en) * | 2014-01-09 | 2014-04-30 | 华侨大学 | Early warning method for fire disaster in passenger car engine cabin |
| CN104200599A (en) * | 2014-08-06 | 2014-12-10 | 浙江工业大学 | Bus multi-sensor fire detection method |
| CN107909763A (en) * | 2017-12-15 | 2018-04-13 | 北京芳城科技有限公司 | A kind of fire source of early warning and method for early warning for intelligent compact shelf |
| CN110349392A (en) * | 2019-06-20 | 2019-10-18 | 中国船舶重工集团公司第七一九研究所 | Fire alarm installation and method |
-
2013
- 2013-04-22 CN CN 201320205542 patent/CN203260147U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103761828A (en) * | 2014-01-09 | 2014-04-30 | 华侨大学 | Early warning method for fire disaster in passenger car engine cabin |
| CN104200599A (en) * | 2014-08-06 | 2014-12-10 | 浙江工业大学 | Bus multi-sensor fire detection method |
| CN107909763A (en) * | 2017-12-15 | 2018-04-13 | 北京芳城科技有限公司 | A kind of fire source of early warning and method for early warning for intelligent compact shelf |
| CN107909763B (en) * | 2017-12-15 | 2024-05-14 | 北京芳城科技有限公司 | Fire hazard early warning equipment and method for intelligent compact shelf |
| CN110349392A (en) * | 2019-06-20 | 2019-10-18 | 中国船舶重工集团公司第七一九研究所 | Fire alarm installation and method |
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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: 20131030 Termination date: 20180422 |