CN104494443A - Intelligent vehicle gas safety control device and control method - Google Patents
Intelligent vehicle gas safety control device and control method Download PDFInfo
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- CN104494443A CN104494443A CN201410762430.7A CN201410762430A CN104494443A CN 104494443 A CN104494443 A CN 104494443A CN 201410762430 A CN201410762430 A CN 201410762430A CN 104494443 A CN104494443 A CN 104494443A
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Abstract
The invention provides an intelligent vehicle gas safety control device and control method for 24-hour real-time car gas safety monitoring, gas leakage alarming and intelligent malfunction processing. According to the technical scheme, the intelligent vehicle gas safety control device consists of a gas concentration sensor module, a vehicle gas safety control module, a car electronic control unit gas safety monitoring and processing module and wiring harnesses for connecting the gas concentration sensor module, the vehicle gas safety control module and the car electronic control unit gas safety monitoring and processing module. By adopting the control device and the control method, the gas safety of a car can be monitored in real time all weather according to different concentration of the gas leakage, the gas leakage alarming and intelligent malfunction processing can be carried out in different areas and different stages, people inside the car can be reminded of checking the gas leakage by virtue of alarming and also can be reminded of taking effective measures to guarantee the gas safety, and safety accidents caused by the gas leakage can be effectively avoided.
Description
Technical field
The present invention relates to a kind of intelligent control system, be specifically related to a kind of vehicle fuel safety intelligent control device and control method.
Background technology
Natural fuels is as clean energy resource, and its main component is alkane, and wherein methane accounts for the overwhelming majority, separately has a small amount of ethane, propane and butane, mainly proper use of, and natural fuels is safer.Along with natural gas used for automobile technology development, maturation, and it has the advantages such as unit calorific value is high, exhaust pollution is little, supply is reliable, price is low, and natural fuels is more and more widely in automobile.As motor vehicle fuel, natural fuels has compression natural gas (CNG) and liquefied natural gas (LNG) two kinds.Easily disperse due to natural fuels lighter than air, if natural gas leaking occurs and assembles when reaching certain concentration, just have the danger of blast.
In recent years, often there is the gas combustion automobile safety misadventure caused because of gas leakage, so be necessary to monitor in real time the safety of vehicle fuel.In order to avoid causing safety misadventure because of gas leakage, method of inspection conventional at present has:
One, traditional leak detection liquid detection method, fast simply, but all need detect gas pipe line in car and combustion gas parts junction, is only applicable to detection when gas burning system is installed.
Two, the product realizing reporting to the police by detecting gas leakage concentration detects, and this series products generally has following defect:
1, function singleness, can only simple realization gas leakage alarm, and these systems only have 1 alarm set point (warning concentration), and is generally a default fixed value, i.e. warning concentration cannot be changed;
2, detectable leakage scope is little, maximum only can support 3 leak concentration sensors;
3, product power consumption is comparatively large, and vehicle also stops monitoring after stopping immediately, otherwise can cause the fault that cannot start automobile because of storage battery power shortage;
4, part system is except reporting to the police, and is also integrated with solenoid control and cuts off source of the gas, especially when running into single-fuel automobile, also cannot realize cutting off source of the gas function;
Break down if 5 leak concentration detection sensor, without any prompting, cannot ensure to use gas safety.
Summary of the invention
For above-mentioned weak point of the prior art, the present invention aims to provide the vehicle fuel safety intelligent control device of the monitoring of a kind of round-the-clock real-time bus gas safe, gas leakage alarm and intelligent fault process.
To achieve these goals, technical scheme of the present invention: a kind of vehicle fuel safety intelligent control device, its wire harness including gas concentration sensor assembly, vehicle fuel safety control module, the monitoring of vehicle electronic control unit gas safe and processing module and connect between three, wherein said vehicle fuel safety control module includes:
Gas concentration collecting sensor signal module, for gathering described gas concentration sensor die block signal;
Gas safe subregion classification processing module, for the classification process of gas safe subregion;
Gas safe selftest module, detects for teaching display stand, judges whether to there is described gas concentration sensor assembly open circuit and fault, and shows testing result;
Power management module, for providing electric energy;
Gas safe subregion classifying alarm module, for gas safe subregion classifying alarm;
Gas safe information subregion hierarchical transmission module, for exporting gas safe information to described vehicle electronic control unit gas safe monitoring and processing module, the monitoring of this vehicle electronic control unit gas safe and processing module coordinate described gas safe subregion classification processing module to carry out subregion classification process to gas safe according to the gas safe information received;
Vehicle fuel safety governor, for coordinating the master controller effectively run between each module.
By gas concentration collecting sensor signal module, the monitor signal that the gas concentration sensor assembly that position each on car is installed generates is gathered, analyzed by vehicle fuel safety governor, subregion warning and safe handling is carried out according to corresponding settlement of accident rank, effectively can avoid causing safety misadventure because of gas leakage, realize round-the-clockly carrying out gas safe monitoring, gas leakage alarm and intelligent fault process to automobile in real time.
Further, described gas concentration sensor die number of blocks is 1 ~ 8, and described gas concentration sensor assembly is semiconductor-type low-power consumption gas concentration sensor assembly, by a considerable amount of gas concentration sensor assembly, fixed point monitoring is carried out to the region or position that automobile likely produce gas leakage, the leakage accident of vehicle fuel can be grasped completely, to ensure that system carries out corresponding countermeasure process by each leakage intensity.
Further, low power dissipation design semiconductor-type gas sensor is integrated with in described gas concentration sensor assembly, and can according to the difference of gas leakage concentration, export the signal of answering from high, medium and low three kinds of different relative concentrations, form three kinds of signals by high, medium and low three kinds of different concentration, the safe class that vehicle fuel leaks can be adapted to completely, accomplish that the varying strength of vehicle fuel leaks, capital gives corresponding safe handling, and processing capacity is strong.
Further, described vehicle fuel safety control module can to described gas concentration sensor assembly produce signal high, medium and low three kinds of variable concentrations carry out from setting, by carrying out, from setting, the gas safe Based Intelligent Control of different automobile types can being met to the gas concentration sensor assembly variable concentrations produced corresponding to signal.
Another object of the present invention is also the control method of openly a kind of vehicle fuel safety intelligent control device, and it comprises step has,
S1, carry out Real-Time Monitoring by 1 ~ 8 gas concentration sensor assembly for automobile there being the position of risk of leakage;
S2, gas concentration sensor assembly, for the difference of gas leakage concentration, export high, medium and low three kinds of signals, are gathered by gas concentration collecting sensor signal module to the signal that gas concentration sensor assembly generates;
S3, vehicle fuel safety governor analyze the signal that described gas concentration collecting sensor signal module gathers, and control described gas safe subregion classification processing module respectively, gas safe subregion classifying alarm module carries out corresponding signal transacting for unlike signal;
Gas safe information exports in the monitoring of described vehicle electronic control unit gas safe and processing module by S4, described gas safe information subregion hierarchical transmission module, and described vehicle electronic control unit gas safe monitoring and processing module coordinate described gas safe subregion classification processing module to carry out signal transacting.
By gas concentration collecting sensor signal module, the monitor signal that the gas concentration sensor assembly that position each on car is installed generates is gathered, analyzed by vehicle fuel safety governor, subregion warning and safe handling is carried out according to corresponding settlement of accident rank, can effectively avoid causing safety misadventure because of gas leakage, this control method can realize round-the-clockly carrying out gas safe monitoring, gas leakage alarm and intelligent fault process to automobile in real time.
Further, described vehicle fuel safety governor in advance to described gas concentration sensor assembly produce signal high, medium and low three kinds of concentration set.
Further, described vehicle fuel safety governor is monitored described gas concentration sensor assembly in real time by gas safe selftest module, and judges whether to there is described gas concentration sensor assembly open circuit and fault, and shows testing result.
Further, for high, medium and low three kinds of signals that described gas concentration sensor assembly produces, described gas safe subregion classifying alarm module divides high, medium and low three grades of responses, and wherein, when alerting signal is rudimentary, only light flash is reported to the police; When alerting signal is middle rank, carry out light flash audio alert simultaneously; When alerting signal is senior, improve the frequency of light flash warning and audio alert.
Further, for high, medium and low three kinds of signals that described gas concentration sensor assembly produces, the monitoring of described gas safe subregion classification processing module, described vehicle electronic control unit gas safe and processing module divide equally high, medium and low three grades of responses, wherein
When processing signals is rudimentary, described gas safe subregion classification processing module will improve the frequency acquisition of corresponding gas concentration collecting sensor signal module automatically, and the monitoring of described vehicle electronic control unit gas safe and processing module do not process;
When processing signals is middle rank, described gas safe subregion classification processing module judges leakage region whether in machinery space, crew module or boot compartment, if, then controlled to open Fuel switching switch by this gas safe subregion classification processing module, and ask the monitoring of described vehicle electronic control unit gas safe and processing module to carry out Fuel switching, described vehicle electronic control unit gas safe monitoring and processing module control air demand, restricted speed;
When processing signals is senior, described gas safe subregion classification processing module opens Fuel switching switch immediately, after described vehicle electronic control unit gas safe monitoring and processing module carry out Fuel switching, disconnection gas cylinder electromagnetic valve, described gas safe subregion classification processing module closes gas cylinder electromagnetic valve and fuel gas pipeline electromagnetic valve automatically.
Further, stop and gas concentration collecting sensor signal module when not collecting signal, vehicle fuel safety governor controls described gas concentration sensor assembly and enters low power operation pattern.
Beneficial effect of the present invention: can according to the variable concentrations of gas leakage, round-the-clockly in real time the gas safe of automobile to be monitored, and gas leakage alarm and intelligent fault process are carried out in subregion graduation, and while reminding occupant to carry out gas leakage investigation by reporting to the police, independently take effective measures to guarantee to use gas safety, effectively avoid the safety misadventure caused because of gas leakage.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is entire block diagram of the present invention;
Fig. 2 is the structured flowchart of vehicle fuel safety control module in Fig. 1.
Detailed description of the invention
The present invention is further described below in conjunction with specific embodiment and accompanying drawing.
A kind of vehicle fuel safety intelligent control device as shown in Figure 1 and Figure 2, its wire harness including gas concentration sensor assembly 1, vehicle fuel safety control module 2, the monitoring of vehicle electronic control unit gas safe and processing module 3 and connect between three, wherein said vehicle fuel safety control module 2 includes:
Gas concentration collecting sensor signal module 4, for gathering described gas concentration sensor assembly 1 signal;
Gas safe subregion classification processing module 5, for the classification process of gas safe subregion;
Gas safe selftest module 6, detects for teaching display stand, judges whether that there is described gas concentration sensor assembly 1 opens a way and fault, and show testing result;
Power management module 7, for providing electric energy;
Gas safe subregion classifying alarm module 9, for gas safe subregion classifying alarm;
Gas safe information subregion hierarchical transmission module 10, for exporting gas safe information to described vehicle electronic control unit gas safe monitoring and processing module 3, that is to say the monitoring of vehicle electronic control unit (ECU) gas safe and processing module 3, the monitoring of this vehicle electronic control unit gas safe and processing module 3 coordinate described gas safe subregion classification processing module 5 pairs of gas safes to carry out subregion classification process according to the gas safe information received;
Vehicle fuel safety governor 8, for coordinating the master controller effectively run between each module.
The monitor signal that the gas concentration sensor assembly 1 that the present invention is installed by each position on gas concentration collecting sensor signal module 4 pairs of cars generates gathers, analyzed by vehicle fuel safety governor 8, subregion warning and safe handling is carried out according to corresponding settlement of accident rank, effectively can avoid causing safety misadventure because of gas leakage, realize round-the-clockly carrying out gas safe monitoring, gas leakage alarm and intelligent fault process to automobile in real time.
Particularly, described gas concentration sensor assembly 1 quantity is 1 ~ 8, maximum installation 8, preferentially be installed on critical area or key position that automobile content easily leaks, or according to size and the concrete needs of vehicle, automobile there is the position of risk of leakage this gas concentration sensor assembly 1 is installed.After gas concentration sensor assembly 1 initialization completes, namely start to detect the concentration of natural gas in the surrounding environment of installation position, and export and concentration dependent signal.Described gas concentration sensor assembly 1 is semiconductor-type low-power consumption gas concentration sensor assembly, parking and without under gas safe faulty condition, system will enter low power operation pattern automatically.
Low power dissipation design semiconductor-type gas sensor is integrated with in described gas concentration sensor assembly 1, can according to the difference of gas leakage concentration, export the signal of answering with high, medium and low three kinds of different relative concentrations, and described vehicle fuel safety control module 2 can to described gas concentration sensor assembly 1 produces signal high, medium and low three kinds of variable concentrations carry out oneself and set.
Described gas safe subregion classifying alarm module 9, reports to the police for gas safe, can be divided into high, medium and low three grades, and simultaneously separated regions, possess light flash and voice alarm function.When alerting signal is rudimentary, light flash is only had to report to the police; When alerting signal is middle rank, while carrying out light flash warning, carry out audio alert; When alerting signal is senior, improves the frequency of light flash warning and audio alert simultaneously, and then reach enough warning functions.All alerting signals all carry out corresponding classification and carry out differentiation by region reporting to the police according to the unlike signal of gas concentration sensor assembly 1.
Gas safe subregion classification processing module 5, for gas safe process, this process can be divided into high, medium and low three grades, and simultaneously separated regions.When low-level signal being detected, module will improve the acquisition of signal frequency of gas concentration sensor assembly 1 automatically; When intermediate signal being detected, crossing the region occurring to leak and being mounted in machinery space, crew module or boot compartment, automatically opening combustion gas change-over switch, the gas safe monitoring of request vehicle electronic control unit and processing module 3 carry out Fuel switching; When advanced signal being detected, opening Fuel switching switch immediately, after completing Fuel switching, automatically closing gas cylinder electromagnetic valve and fuel gas pipeline electromagnetic valve, avoiding the generation of safety misadventure from source.
Gas safe information subregion hierarchical transmission module 10, for exporting gas safe information to the monitoring of vehicle electronic control unit gas safe and processing module 3, this information can divide high, medium and low three grades.
The monitoring of vehicle electronic control unit gas safe and processing module 3, the combustion gas failure message that vehicle fuel safety control module 2 sends can be received, namely the gas safe information of described gas safe information subregion hierarchical transmission module 10 output, also carries out response at different level by high, medium and low three grades.When receiving low-level signal, do not carry out special processing; When receiving intermediate signal, the monitoring of vehicle electronic control unit gas safe and processing module 3 realize restriction air demand, restricted speed by by corresponding control policy; When receiving advanced signal, the monitoring of vehicle electronic control unit gas safe and processing module 3 will independently carry out Fuel switching (being only limitted to oil-gas two-way fuel automobile), disconnect gas cylinder electromagnetic valve, light not under command light to remind chaufeur parking checking simultaneously.
Power management module 7, is in charge of the power supply of whole system, under dead ship condition, automatically enters low power operation pattern.
The present invention discloses the control method of above-mentioned vehicle fuel safety intelligent control device simultaneously, and it comprises step has,
S1, carry out Real-Time Monitoring by 1 ~ 8 gas concentration sensor assembly 1 for automobile there being the position of risk of leakage;
S2, gas concentration sensor assembly 1, for the difference of gas leakage concentration, export high, medium and low three kinds of signals, and the signal generated by gas concentration collecting sensor signal module 4 pairs of gas concentration sensor assemblies 1 gathers;
S3, vehicle fuel safety governor 8 analyze the signal that described gas concentration collecting sensor signal module 4 gathers, and control described gas safe subregion classification processing module 5 respectively, gas safe subregion classifying alarm module 9 carries out corresponding signal transacting for unlike signal;
Gas safe information exports in the monitoring of described vehicle electronic control unit gas safe and processing module 3 by S4, described gas safe information subregion hierarchical transmission module 10, and described vehicle electronic control unit gas safe monitoring and processing module 3 coordinate described gas safe subregion classification processing module 5 to carry out signal transacting.
Particularly, described vehicle fuel safety governor 8 is monitored described gas concentration sensor assembly 1 in real time by gas safe selftest module 6, and judges whether that there is described gas concentration sensor assembly 1 opens a way and fault, and shows testing result.
When stopping and gas concentration collecting sensor signal module 4 does not collect signal, vehicle fuel safety governor 8 controls described gas concentration sensor assembly 1 and enters low power operation pattern.
Described vehicle fuel safety governor 8 in advance to described gas concentration sensor assembly 1 produce signal high, medium and low three kinds of concentration set.
For high, medium and low three kinds of signals that described gas concentration sensor assembly 1 produces, the high, medium and low three grades of responses of described gas safe subregion classifying alarm module 9 points, wherein, when alerting signal is rudimentary, only light flash is reported to the police; When alerting signal is middle rank, carry out light flash audio alert simultaneously; When alerting signal is senior, improve the frequency of light flash warning and audio alert.
For high, medium and low three kinds of signals that described gas concentration sensor assembly 1 produces, the monitoring of described gas safe subregion classification processing module 5, described vehicle electronic control unit gas safe and processing module 3 divide equally high, medium and low three grades of responses, wherein,
When processing signals is rudimentary, described gas safe subregion classification processing module 5 will improve the frequency acquisition of corresponding gas concentration collecting sensor signal module 4 automatically, and the monitoring of described vehicle electronic control unit gas safe and processing module 3 do not process;
When processing signals is middle rank, described gas safe subregion classification processing module 5 judges leakage region whether in machinery space, crew module or boot compartment, if, then controlled to open Fuel switching switch by this gas safe subregion classification processing module 5, and ask the monitoring of described vehicle electronic control unit gas safe and processing module 3 to carry out Fuel switching, described vehicle electronic control unit gas safe monitoring and processing module 3 control air demand, restricted speed;
When processing signals is senior, described gas safe subregion classification processing module 5 opens Fuel switching switch immediately, after described vehicle electronic control unit gas safe monitoring and processing module 3 carry out Fuel switching, disconnection gas cylinder electromagnetic valve, described gas safe subregion classification processing module 5 closes gas cylinder electromagnetic valve and fuel gas pipeline electromagnetic valve automatically.
The monitor signal that the gas concentration sensor assembly 1 installed by each position on gas concentration collecting sensor signal module 4 pairs of cars is generated gathers, analyzed by vehicle fuel safety governor 8, subregion warning and safe handling is carried out according to corresponding settlement of accident rank, can effectively avoid causing safety misadventure because of gas leakage, this control method can realize round-the-clockly carrying out gas safe monitoring, gas leakage alarm and intelligent fault process to automobile in real time.
Above the technical scheme that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth the principle of the embodiment of the present invention and embodiment, the explanation of above embodiment is only applicable to the principle helping to understand the embodiment of the present invention; Meanwhile, for one of ordinary skill in the art, according to the embodiment of the present invention, detailed description of the invention and field of application all will change, and in sum, this description should not be construed as limitation of the present invention.
Claims (10)
1. a vehicle fuel safety intelligent control device, it is characterized in that: the wire harness including gas concentration sensor assembly (1), vehicle fuel safety control module (2), the monitoring of vehicle electronic control unit gas safe and processing module (3) and connect between three, wherein said vehicle fuel safety control module (2) includes:
Gas concentration collecting sensor signal module (4), for gathering described gas concentration sensor assembly (1) signal;
Gas safe subregion classification processing module (5), for the classification process of gas safe subregion;
Gas safe selftest module (6), detects for teaching display stand, judges whether to there is described gas concentration sensor assembly (1) open circuit and fault, and shows testing result;
Power management module (7), for providing electric energy;
Gas safe subregion classifying alarm module (9), for gas safe subregion classifying alarm;
Gas safe information subregion hierarchical transmission module (10), for exporting gas safe information to described vehicle electronic control unit gas safe monitoring and processing module (3), the monitoring of this vehicle electronic control unit gas safe and processing module (3) coordinate described gas safe subregion classification processing module (5) to carry out subregion classification process to gas safe according to the gas safe information received;
Vehicle fuel safety governor (8), for coordinating the master controller effectively run between each module.
2. vehicle fuel safety intelligent control device according to claim 1, it is characterized in that: described gas concentration sensor assembly (1) quantity is 1 ~ 8, and described gas concentration sensor assembly (1) is semiconductor-type low-power consumption gas concentration sensor assembly.
3. vehicle fuel safety intelligent control device according to claim 2, it is characterized in that: in described gas concentration sensor assembly (1), be integrated with low power dissipation design semiconductor-type gas sensor, and can according to the difference of gas leakage concentration, export the signal of answering from high, medium and low three kinds of different relative concentrations.
4. vehicle fuel safety intelligent control device according to claim 3, is characterized in that: described vehicle fuel safety control module (2) can to described gas concentration sensor assembly (1) produce signal high, medium and low three kinds of variable concentrations carry out from setting.
5., according to the control method of the arbitrary described vehicle fuel safety intelligent control device of claim 1-4, it is characterized in that: comprising step has,
S1, carry out Real-Time Monitoring by 1 ~ 8 gas concentration sensor assembly (1) for automobile there being the position of risk of leakage;
S2, gas concentration sensor assembly (1) are for the difference of gas leakage concentration, export high, medium and low three kinds of signals, by gas concentration collecting sensor signal module (4), the signal that gas concentration sensor assembly (1) generates is gathered;
S3, vehicle fuel safety governor (8) analyze the signal that described gas concentration collecting sensor signal module (4) gathers, and control described gas safe subregion classification processing module (5) respectively, gas safe subregion classifying alarm module (9) carries out corresponding signal transacting for unlike signal;
Gas safe information exports in the monitoring of described vehicle electronic control unit gas safe and processing module (3) by S4, described gas safe information subregion hierarchical transmission module (10), and described vehicle electronic control unit gas safe monitoring and processing module (3) coordinate described gas safe subregion classification processing module (5) to carry out signal transacting.
6. the control method of vehicle fuel safety intelligent control device according to claim 5, is characterized in that: described vehicle fuel safety governor (8) in advance to described gas concentration sensor assembly (1) produce signal high, medium and low three kinds of concentration set.
7. the control method of vehicle fuel safety intelligent control device according to claim 5, it is characterized in that: described vehicle fuel safety governor (8) is monitored described gas concentration sensor assembly (1) in real time by gas safe selftest module (6), and judge whether to there is described gas concentration sensor assembly (1) open circuit and fault, and show testing result.
8. the control method of vehicle fuel safety intelligent control device according to claim 5, it is characterized in that: the high, medium and low three kinds of signals produced for described gas concentration sensor assembly (1), point high, medium and low three grades of responses of described gas safe subregion classifying alarm module (9), wherein, when alerting signal is rudimentary, only light flash is reported to the police; When alerting signal is middle rank, carry out light flash audio alert simultaneously; When alerting signal is senior, improve the frequency of light flash warning and audio alert.
9. the control method of vehicle fuel safety intelligent control device according to claim 5, it is characterized in that: the high, medium and low three kinds of signals produced for described gas concentration sensor assembly (1), described gas safe subregion classification processing module (5), the monitoring of described vehicle electronic control unit gas safe and processing module (3) divide equally high, medium and low three grades of responses, wherein
When processing signals is rudimentary, described gas safe subregion classification processing module (5) will improve the frequency acquisition of corresponding gas concentration collecting sensor signal module (4) automatically, and the monitoring of described vehicle electronic control unit gas safe and processing module (3) do not process;
When processing signals is middle rank, described gas safe subregion classification processing module (5) judges leakage region whether in machinery space, crew module or boot compartment, if, then controlled to open Fuel switching switch by this gas safe subregion classification processing module (5), and ask the monitoring of described vehicle electronic control unit gas safe and processing module (3) to carry out Fuel switching, described vehicle electronic control unit gas safe monitoring and processing module (3) control air demand, restricted speed;
When processing signals is senior, described gas safe subregion classification processing module (5) opens Fuel switching switch immediately, after described vehicle electronic control unit gas safe monitoring and processing module (3) carry out Fuel switching, disconnection gas cylinder electromagnetic valve, described gas safe subregion classification processing module (5) closes gas cylinder electromagnetic valve and fuel gas pipeline electromagnetic valve automatically.
10. the control method of vehicle fuel safety intelligent control device according to claim 5, it is characterized in that: stop and gas concentration collecting sensor signal module (4) when not collecting signal, vehicle fuel safety governor (8) controls described gas concentration sensor assembly (1) and enters low power operation pattern.
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| CN105464821A (en) * | 2015-12-30 | 2016-04-06 | 广西玉柴机器股份有限公司 | Self-service control device for vehicle gas |
| CN106128044A (en) * | 2016-08-23 | 2016-11-16 | 重庆盟讯电子科技有限公司 | A kind of gas combustion automobile tolerance display leakage alarm |
| CN107082404A (en) * | 2017-05-12 | 2017-08-22 | 海湾环境科技（北京）股份有限公司 | Oil gas monitoring method and oil gas monitoring system |
| CN108597193A (en) * | 2018-07-04 | 2018-09-28 | 汉能移动能源控股集团有限公司 | Gas leakage treatment device and gas leakage alarm device |
| CN112918259A (en) * | 2021-03-15 | 2021-06-08 | 北京科技大学 | Hydrogen leakage safety grading alarm system for hydrogen energy automobile |
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| Publication number | Publication date |
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| CN104494443B (en) | 2017-02-01 |
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