CN212460783U

CN212460783U - Gas leakage alarm device for automobile

Info

Publication number: CN212460783U
Application number: CN202021502212.7U
Authority: CN
Inventors: 李宗民; 丛涛
Original assignee: Yantai Hp Automotive Gas Equipment Co ltd
Current assignee: Yantai Hp Automotive Gas Equipment Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-02-02
Anticipated expiration: 2030-07-27

Abstract

The utility model discloses an automobile gas leakage alarm device, which comprises an alarm host, a gas sensor, an audible and visual alarm unit and an action execution unit, wherein the alarm host is connected with the gas sensor, the audible and visual alarm unit and the action execution unit through signal cables, and the alarm host is also connected with a power module; the alarm host is used for detecting the signal of the gas sensor, analyzing and calculating the signal, sending an alarm signal and a control signal aiming at the action execution unit; the action execution unit is used for operating an air outlet end valve of the air bottle. The utility model discloses leak vehicle gas and carry out real time monitoring, detect that gas concentration exceeds standard and can carry out audible and visual alarm, the position that the suggestion gas was leaked sends control signal simultaneously and closes the gas valve to inform the vehicle automatic to the fuel state, eliminate vehicle operation potential safety hazard. The alarm host of the device has small structure, convenient installation and more visual display; the device can be compatible with all automobile gas systems, and has strong applicability.

Description

Gas leakage alarm device for automobile

Technical Field

The utility model relates to an automotive electronics technical field, concretely relates to alarm device is leaked in car gas.

Background

At present, the gas automobile policy system in China is formed primarily. According to incomplete statistics, from 1999, "air purification engineering-automobile cleaning action", to date, 31 policies have been developed at the national level to encourage, support and promote the continuous development of natural gas automobiles. The relevant standard system of the vehicle gas is continuously perfected, the domestic gas automobile industry enters the standard development period, the pattern of the middle-stream and downstream collaborative development of the industry is formed initially, and the overall development of the gas automobile technology is relatively mature.

However, when the gas automobile is used, the gas pipeline is aged to cause gas leakage, so that potential safety hazards are generated. Therefore, there is a need in the art for a comprehensive and practical gas leakage alarm device for vehicles, which can detect the gas leakage condition of the vehicle in real time, send out an alarm signal when detecting the gas leakage, close a gas valve, and ensure the safety of the gas vehicle.

SUMMERY OF THE UTILITY MODEL

The utility model provides a car gas leakage alarm device, its purpose: the gas leakage condition of the vehicle is monitored in real time, an alarm signal is sent out when the gas concentration exceeds the standard, a gas valve is closed, the vehicle is informed to turn to the fuel state, and the operation safety of the gas automobile is improved.

The utility model discloses technical scheme as follows:

an automobile gas leakage alarm device comprises an alarm host, a gas sensor, an audible and visual alarm unit and an action execution unit, wherein the alarm host is connected with the gas sensor, the audible and visual alarm unit and the action execution unit through signal cables and is also connected with a power supply module; the alarm host is used for detecting the signals of the gas sensor, analyzing and calculating the signals, and sending out alarm signals and control signals aiming at the action execution unit; the action execution unit is used for operating an air outlet end valve of the fuel gas storage device.

Further, the action execution unit is a manipulator.

Furthermore, the alarm host also has a conversion notification signal end used for sending a state conversion signal to the automobile control system.

Further, the gas sensor is installed in the engine compartment and at the gas storage device.

Furthermore, the alarm host comprises a shell and a circuit control board, wherein the shell is in a vehicle shape, and alarm indicator lamps are arranged on the shell at positions corresponding to the engine bin and the fuel gas storage device.

Further, a fault indicator lamp and a power indicator lamp are arranged on the top of the shell.

Further, the housing includes an upper panel and a lower bottom case, and the circuit control board is mounted on the lower bottom case.

Compared with the prior art, the utility model discloses following beneficial effect has: (1) gas sensors are respectively arranged at the positions of an engine bin and a gas cylinder to monitor the gas leakage of a vehicle in real time, when the concentration of the gas is detected to exceed the standard, an alarm host arranged in a cab can generate sound and light alarm to inform a driver at the first time, and an indicator lamp of the alarm host can prompt the position of the gas leakage, so that later-stage fault maintenance is facilitated; the alarm host sends out a control signal to close the gas valve and informs the vehicle to automatically turn to a fuel oil state, so that potential safety hazards of vehicle operation are eliminated; (2) the alarm host of the utility model has small structure, convenient installation and more visual display; (3) the device can be compatible with all automobile gas systems, and has strong applicability.

Drawings

Fig. 1 is a block diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of the housing;

FIG. 3 is a schematic circuit diagram of a CPU module of the circuit control board;

FIG. 4 is a circuit schematic of a power module;

FIG. 5 is a circuit schematic of a sensor module;

fig. 6 is a logic diagram of a control program according to the present invention.

Detailed Description

The technical scheme of the utility model is explained in detail below with the attached drawings:

referring to fig. 1, the automobile gas leakage alarm device comprises an alarm host 1, a gas sensor 2, an audible and visual alarm unit 4 and an action execution unit 5, wherein the alarm host 1 is connected with the gas sensor 2, the audible and visual alarm unit 4 and the action execution unit 5 through signal cables, and the alarm host 1 is also connected with a power module 3; the alarm host 1 is used for detecting signals of the gas sensor 2, analyzing and calculating the signals, and sending out alarm signals and control signals aiming at the action execution unit; the action execution unit 5 is used for operating an air outlet end valve of the air bottle. Specifically, in this embodiment, the action executing unit 5 is a manipulator, and is configured to operate an air outlet ball valve of the air bottle.

Further, the gas sensors 2 are two groups and are respectively installed in the engine compartment and at the gas cylinder of the automobile trunk. The alarm host 1 is arranged in a cab, and the sound-light alarm unit 4 comprises an indicator light and a buzzer.

The working principle of the device is as follows: the alarm host 1 acquires analog quantity signals (related to gas concentration) input by 2 gas sensors through a signal cable, and obtains a measurement result through AD conversion. When the collected data is higher than the set gas alarm concentration value, sound and light alarm is carried out, a steel cylinder valve is closed through a mechanical arm, meanwhile, a conversion notification signal is sent to a control system of the automobile through a conversion notification signal end, and the automobile control system automatically controls the automobile to be converted from a gas state to a fuel state after receiving the signal (the existing function of the existing gas automobile control system). When the mechanical arm is controlled, the alarm host sends an action signal to the mechanical arm, the motor of the mechanical arm is powered on, the mechanical arm drives the ball valve handle to rotate, the ball valve is closed, the motor stops after rotating to a limit position, and the motor is powered off. After the fault is eliminated, the ball valve is manually opened.

Further, the alarm host 1 comprises a housing and a circuit control board. Referring to fig. 2, the size of the alarm main unit casing is 98 x 53 x 33.38mm, and the casing is provided with an opening for displaying an indicator light. The shell is divided into an upper part and a lower part and comprises an upper panel and a lower bottom shell, and the circuit control board is installed on the lower bottom shell.

The shell is in a vehicle shape, and alarm indicator lamps 1-3 are arranged on the shell at positions corresponding to an engine bin and a gas cylinder of a vehicle trunk. Specifically, 4 diagonal positions of lower part drain pan respectively set up 1 yellow alarm lamp, and 2 are a set of, represent the response alarm position of engine compartment and vehicle trunk gas cylinder department respectively. When the data collected by the gas sensor is abnormal, the corresponding alarm indicator lamp is lightened, so that a driver can visually see the gas leakage position.

Further, a fault indicator lamp 1-1 (red lamp) and a power indicator lamp 1-2 (green lamp) are arranged at the top of the shell. The power indicator lamp 1-2 is powered on normally, and the fault indicator lamp 1-1 flickers when the data of the gas sensor cannot be detected, which indicates that the circuit is abnormal.

Fig. 3 is a schematic diagram of the CPU module circuit of the circuit control board. In the figure, U1 is an MC9S08AC32 single-chip microcomputer, and the port configuration thereof is as follows: the LED1-4 is a control signal of 4 position indicator lamps for alarming, the LED _ ERROR is a control signal of a state lamp of an alarm main machine, the OUT1 is a control signal of a manipulator, the AD0-1 is a measurement signal of two sensors, and the BEEP is a control signal of a buzzer.

Fig. 4 is a schematic circuit diagram of the power module of the present invention. In the figure, U3 and U4 are power supply chips, and convert externally input 12V into 5V.

Fig. 5 is a schematic diagram of a sensor module circuit according to the present invention. The sensor T1 is powered by the power supply module, and the output signal GAS _3 of the sensor T1 is transmitted to the alarm host through a signal cable.

Fig. 6 is a logic diagram of a control program according to the present invention. The automatic control software of the device is embedded software based on a single chip microcomputer, and after the system is powered on, IO port initialization, AD initialization and timer initialization are mainly carried out. Then the device executes each function in turn, which is respectively: and reading the AD measurement result at regular time, judging whether the AD exceeds the limit, if not, executing the program in a circulating way, if so, performing sound alarm, indicator light alarm and mechanical arm action, returning to the step of reading the AD result at regular time, and executing each function in a circulating way.

Claims

1. The utility model provides an alarm device is leaked to car gas which characterized in that: the gas alarm device comprises an alarm host, a gas sensor, an audible and visual alarm unit and an action execution unit, wherein the alarm host is connected with the gas sensor, the audible and visual alarm unit and the action execution unit through signal cables and is also connected with a power supply module; the alarm host is used for detecting the signals of the gas sensor, analyzing and calculating the signals, and sending out alarm signals and control signals aiming at the action execution unit; the action execution unit is used for operating an air outlet end valve of the fuel gas storage device.

2. The gas leakage alarm device for vehicle according to claim 1, wherein: the action execution unit is a manipulator.

3. The gas leakage alarm device for vehicle according to claim 1, wherein: the alarm host is also provided with a switching notification signal end for sending a state switching signal to an automobile control system.

4. The gas leakage alarm device for vehicle according to claim 1, wherein: the gas sensor is installed in the engine bin and at the gas storage device.

5. The gas leakage alarm device for vehicle according to claim 1, wherein: the alarm host comprises a shell and a circuit control board, the shell is in a vehicle shape, and alarm indicating lamps are arranged on the shell at positions corresponding to the engine bin and the fuel gas storage device.

6. The gas leakage alarm device for vehicle according to claim 5, wherein: and a fault indicator lamp and a power indicator lamp are arranged at the top of the shell.

7. The gas leakage alarm device for vehicle according to claim 5, wherein: the shell comprises an upper panel and a lower bottom shell, and the circuit control board is installed on the lower bottom shell.