CN117755065A - Heavy truck gas state detection device and detection system - Google Patents
Heavy truck gas state detection device and detection system Download PDFInfo
- Publication number
- CN117755065A CN117755065A CN202311725383.4A CN202311725383A CN117755065A CN 117755065 A CN117755065 A CN 117755065A CN 202311725383 A CN202311725383 A CN 202311725383A CN 117755065 A CN117755065 A CN 117755065A
- Authority
- CN
- China
- Prior art keywords
- state detection
- gas
- gas state
- heavy truck
- leakage
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 131
- 239000007789 gas Substances 0.000 claims abstract description 194
- 239000007788 liquid Substances 0.000 claims abstract description 44
- 239000003949 liquefied natural gas Substances 0.000 claims abstract description 20
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012552 review Methods 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The invention provides a heavy truck gas state detection device and a detection system, wherein the device comprises a control module, a transmission module and a detection module; the detection module is connected to the control module through the transmission module; the output end of the control module is connected with an alarm device; the detection module comprises a liquid level sensor and a leakage sensor; the liquid level sensor is arranged inside the gas cylinder; the leakage sensor is arranged on the surface of the section of the external output pipeline of the gas cylinder; the control module obtains the residual liquid natural gas quantity in the gas cylinder through a liquid level sensor; or acquiring whether leakage exists outside the gas cylinder through a leakage sensor; and alarming when detecting that the quantity of the residual liquid natural gas in the gas cylinder is not full of the demand or that the gas leakage exists outside the gas cylinder. The invention also provides a heavy truck gas state detection system which comprises a plurality of heavy truck gas state detection devices and a switching module. The invention can complete the display and alarm on the instrument in the cab through a simple wire harness by means of the bus advantage on the vehicle.
Description
Technical Field
The invention belongs to the technical field of heavy automobiles, and particularly relates to a heavy truck gas state detection device and a detection system.
Background
LNG (liquefied natural gas) fuel gas is used as a fuel form on the heavy truck, a plurality of pipeline interfaces are arranged at the LNG gas cylinder, the gas leakage state at the LNG gas cylinder needs to be closely monitored, and if the concentration around the gas cylinder reaches above, a warning needs to be sent out to remind a driver to check.
The heavy truck gas state detection device disclosed in the prior art generally adopts an instrument to detect the state of a corresponding gas cylinder, and power supply and signal transmission wire harnesses around the gas cylinder are too many, so that more wire harnesses can be increased under the condition of detecting a plurality of gas cylinders, the transmission wire harnesses around the gas cylinder can be too messy, and the situation of misconnection or misdetection can be quite easily caused. In the case of a plurality of gas cylinders mounted on a vehicle, if the state of each gas cylinder is indicated on the meter, it is necessary to increase the meter display space, so that the meter mounted in the existing system is not necessarily usable or the meter needs to be replaced. How to realize gas state detection without replacing equipment and how to solve the technical problems of power supply around a gas cylinder and too many signal transmission harnesses are needed to be solved.
Disclosure of Invention
In order to solve the technical problems, the invention provides a heavy truck gas state detection device and a detection method, which can detect the residual liquid in an LNG gas cylinder and monitor the leakage quantity of gas at the interfaces of all pipelines around the gas cylinder.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the heavy truck gas state detection device comprises a control module, a transmission module and a detection module; the detection module is connected to the input end of the control module through the transmission module; the output end of the control module is connected with an alarm device;
the detection module comprises a liquid level sensor and a leakage sensor; the liquid level sensor is arranged inside the gas cylinder; the leakage sensor is arranged on the surface of the section of the external output pipeline of the gas cylinder; the control module is used for acquiring the quantity of the residual liquid natural gas in the gas cylinder through the liquid level sensor; or acquiring whether gas leakage exists outside the gas cylinder through a leakage sensor; and alarming when detecting that the quantity of the residual liquid natural gas in the gas cylinder is not full of the demand or that the gas leakage exists outside the gas cylinder.
Further, the transmission module adopts a transmitter and is used for converting the electric signals acquired by the liquid level sensor into CAN messages and transmitting the CAN messages to the control module; or the electric signals collected by the leakage sensor are converted into CAN messages and sent to the control module.
Further, the output end of the control module is also connected with a whole vehicle instrument and is used for displaying the quantity of the residual liquid natural gas in the gas cylinder acquired by the liquid level sensor; and or data indicating the presence of a gas leak outside the cylinder.
Further, the output end of the controller is connected with the whole vehicle instrument through a CAN message.
The invention also provides a heavy truck gas state detection system which comprises a plurality of heavy truck gas state detection devices, a switching module and a power supply module which are connected;
the power supply module is connected with each heavy-duty card gas state detection device and is used for supplying power to each heavy-duty card gas state detection device; the switching module is connected with a whole vehicle instrument; after the power supply module is electrified for each heavy-truck gas state detection device, ID numbers are automatically allocated for each heavy-truck gas state detection device, the heavy-truck gas state detection device executes liquid level detection or leakage detection, and the residual liquid amount of the gas cylinder or the leakage condition of the gas cylinder which is required to be displayed by the whole vehicle instrument is selected through the switching module.
Further, the heavy truck gas state detection devices are all grounded.
Further, the switching module adopts a self-resetting switch; the self-resetting switch is provided with two gears of 0 and 1.
Further, when the liquid level detection is executed by the heavy truck gas state detection system and the self-reset switch is in the 0 gear, the circuit in the self-reset switch is not connected, and the whole vehicle instrument judges the displayed heavy truck gas state detection device according to the CAN message ID priority sent by the heavy truck gas state detection device; when the self-resetting switch is in 1 gear, the whole vehicle instrument circulates to display the residual liquid amounts of different gas cylinders each time the self-resetting switch is pressed down.
Further, when the self-reset switch is in 0 gear, the circuit in the self-reset switch is not connected, and the whole vehicle instrument judges the displayed leakage position according to the CAN message ID priority sent by the heavy-card gas state detection device; when the self-resetting switch is in 1 gear, the whole vehicle instrument circulates to display the leakage position every time the self-resetting switch is pressed down.
Further, when the heavy truck gas state detection system performs leakage detection, each heavy truck gas state detection device is connected with the indicator lamp.
The effects provided in the summary of the invention are merely effects of embodiments, not all effects of the invention, and one of the above technical solutions has the following advantages or beneficial effects:
the invention provides a heavy truck gas state detection device and a detection system, wherein the device comprises a control module, a transmission module and a detection module; the detection module is connected to the input end of the control module through the transmission module; the output end of the control module is connected with an alarm device; the detection module comprises a liquid level sensor and a leakage sensor; the liquid level sensor is arranged inside the gas cylinder; the leakage sensor is arranged on the surface of the section of the external output pipeline of the gas cylinder; the control module is used for acquiring the quantity of the residual liquid natural gas in the gas cylinder through the liquid level sensor; or acquiring whether gas leakage exists outside the gas cylinder through a leakage sensor; and alarming when detecting that the quantity of the residual liquid natural gas in the gas cylinder is not full of the demand or that the gas leakage exists outside the gas cylinder. The invention also provides a heavy truck gas state detection system which comprises a plurality of heavy truck gas state detection devices, a switching module and a power supply module. The invention CAN complete the display and alarm of the instrument in the cab by means of the advantage of the CAN bus on the vehicle and through simple wire harness connection, and has strong expansibility.
The invention CAN be applied to a plurality of gas cylinders, CAN monitor the leakage quantity of gas at the interfaces of all pipelines around the gas cylinders, transmits all signals to a driver in a cab in a simplest line mode, accurately displays the states of all the gas cylinders on an instrument, and CAN distinguish the signals of which device is in particular through simple logic judgment by the design of CAN messages in the device.
Drawings
Fig. 1 is a schematic connection diagram of a heavy truck gas state detection device according to embodiment 1 of the present invention;
fig. 2 is a schematic connection diagram of a heavy truck gas state detection system according to embodiment 2 of the present invention; legend description:
s101-change-over switch, A102-motormeter, X1-first heavy card gas state detection device, X2-second heavy card gas state detection device, X3-third heavy card gas state detection device.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily obscure the present invention.
Example 1
The embodiment 1 of the invention provides a heavy truck gas state detection device which is used for solving the problem in the prior art how to enable an instrument to identify or display signals sent by a detection device on a corresponding gas cylinder by using a simplest method; how to solve the problems of too many power supply and signal transmission harnesses around the gas cylinder; the method solves the problem of how to display the state of each gas cylinder on the instrument under the condition that a plurality of gas cylinders are arranged on the vehicle, and the premise is that the display space of the instrument is not changed.
The invention provides a heavy truck gas state detection device, which comprises a control module, a transmission module and a detection module, wherein the control module is used for controlling the gas state detection device to detect the gas state of a heavy truck; the detection module is connected to the input end of the control module through the transmission module; the output end of the control module is connected with an alarm device; the detection module comprises a liquid level sensor and a leakage sensor; the liquid level sensor is arranged inside the gas cylinder; the leakage sensor is arranged on the surface of the section of the external output pipeline of the gas cylinder; the control module is used for acquiring the quantity of the residual liquid natural gas in the gas cylinder through the liquid level sensor; or acquiring whether gas leakage exists outside the gas cylinder through a leakage sensor; and alarming when detecting that the quantity of the residual liquid natural gas in the gas cylinder is not full of the demand or that the gas leakage exists outside the gas cylinder.
The leakage sensor is arranged on the surface of the section of the external output pipeline of the gas cylinder, and is provided with an input natural gas pipe joint, an output pipe joint, a circulating pipe joint and the like. When the concentration value exceeds the standard, a signal is sent to a vehicle instrument in the form of a CAN message for alarming.
Fig. 1 is a schematic connection diagram of a heavy truck gas state detection device according to embodiment 1 of the present invention;
the transmission module adopts a transmitter and is used for converting the electric signals acquired by the liquid level sensor into CAN messages and transmitting the CAN messages to the control module; or the electric signals collected by the leakage sensor are converted into CAN messages and sent to the control module.
The output end of the control module is also connected with a whole vehicle instrument and is used for displaying the quantity of the residual liquid natural gas in the gas cylinder acquired by the liquid level sensor; or data indicating that there is a gas leak outside the cylinder.
The control module of the invention adopts a microprocessor.
The heavy truck gas state detection device provided by the embodiment 1 of the invention can be used for detecting liquid level and leakage and can also be used for detecting liquid level and leakage simultaneously.
According to the heavy truck gas state detection device provided by the embodiment 1 of the invention, the residual liquid in the LNG gas cylinder can be realized, the leakage quantity of gas at the interfaces of all pipelines around the gas cylinder can be monitored, signals detected by the corresponding sensors are transmitted to a driver in a cab in a simplest line mode, and the states of all the gas cylinders are accurately displayed on the instrument. Through the design of the CAN message in the device, the signal of which device CAN be distinguished CAN be judged by simple logic judgment, the overall structure is simple, the maintenance is convenient, and the expansibility is strong.
Example 2
Based on the heavy truck gas state detection device provided by the embodiment 1 of the invention, the embodiment 2 of the invention also provides a heavy truck gas state detection system, wherein the system comprises a plurality of heavy truck gas state detection devices, a switching module and a power supply module which are connected;
the power supply module is connected with each heavy-duty card gas state detection device and is used for supplying power to each heavy-duty card gas state detection device; the switching module is connected with the whole vehicle instrument; after the power supply module is electrified for each heavy-truck gas state detection device, ID numbers are automatically allocated for each heavy-truck gas state detection device, the heavy-truck gas state detection device executes liquid level detection or leakage detection, and the residual liquid amount of the gas cylinder or the leakage condition of the gas cylinder which is required to be displayed by the whole vehicle instrument is selected through the switching module.
Fig. 2 is a schematic connection diagram of a heavy truck gas state detection system according to embodiment 2 of the present invention.
In embodiment 2 of the present invention, three heavy truck gas state detection devices X1, X2 and X3 are taken as examples for explanation.
The power supply module is connected with each heavy-duty card gas state detection device and is used for supplying power to each heavy-duty card gas state detection device.
And each heavy truck gas state detection device is grounded.
In embodiment 2 of the present invention, each heavy truck gas state detection device is connected to the automobile instrument a102 through a CAN bus.
The embodiment 2 of the invention also provides a heavy truck gas state detection system, when liquid level detection is carried out, a liquid level sensor in each heavy truck gas state detection device is arranged in a gas cylinder, the liquid level sensor is converted into a residual liquid level state through detecting the change of pressure, and the numerical value is converted into a CAN message and is transmitted to a vehicle instrument for specific numerical value display.
S101, a change-over switch is used for displaying a change-over gas cylinder, a self-resetting switch is adopted, the number of the gas cylinders is determined according to CAN messages in the device, and the number of the gas cylinders is defined at present: the rear bottom bottle is 1, the rear top bottle is 2, the right side bottle is 3, the left side bottle is 4, the gas bottle with the smallest number is defaulted after power-on, S101 has three gears which are 0 and 1 respectively, when the gas bottle is in the 0 gear, no circuit is switched on in the switch, the instrument CAN judge and display according to the CAN message ID priority sent by the detection device, that is, if the vehicle is provided with 3 gas bottles, the signal of the gas bottle 1 CAN be displayed, if the vehicle is provided with only the left and right gas bottles, the liquid amount of the gas bottle 3 CAN be displayed, and the situation is also applicable to being provided with only one gas bottle; after the S101 switch 1 gear of self-reset is pressed, a switch signal is sent to the instrument, the instrument switches and displays data sent by a detection device corresponding to another gas cylinder, and the like, and after the switch is pressed down each time, the instrument circulates to display the residual liquid amounts of different gas cylinders, and the like, the detection of the heavy truck gas state installed on the vehicle is not limited by quantity, and only the ID code in the CAN message is specified in advance, so that the correspondence is distinguished, and the quantity expansion CAN be carried out according to the actual situation.
The embodiment 2 of the invention also provides a heavy truck gas state detection system, when the self-reset switch is in the 0 gear during leakage detection, the circuit in the self-reset switch is not connected, and the whole vehicle instrument judges the displayed leakage position according to the CAN message ID priority sent by the heavy truck gas state detection device; when the self-resetting switch is in 1 gear, the whole vehicle instrument circulates to display the leakage position every time the self-resetting switch is pressed down.
If a plurality of gas cylinders are arranged on the vehicle, a corresponding number of leakage alarms are required to be matched, ID numbers are automatically allocated after the leakage alarms are electrified, and the ID numbers are allocated 15 seconds before the electrification, wherein each leakage alarm adopts preemptive type, if the leakage alarm which firstly sends out a message is allocated as a1 st path, the allocation of a 2 nd message is allocated as a 2 nd path, the allocation of a 3 rd message is allocated as a 3 rd path, and the allocation of a 4 th message is allocated as a 4 th path. The meter will receive signals of different IDs, respectively, as a basis for displaying which cylinder.
The heavy truck gas state detection system is used as a leakage alarm, and the leakage alarm is numbered firstly, for example: 1, 2, 3, 4 ways … …. Each path of leakage alarm CAN message adopts different message ID, the ID number is used for identifying the bit number of the leakage alarm, and the content of the CAN message contains the state of the leakage alarm. The states of the leakage alarms are automatically sent out by messages 1 to 4 after the leakage alarms are electrified, the states of the leakage alarms CAN be identified through the message ID numbers, the states comprise the working states of the leakage alarms, the gas leakage reaches the state of an alarm condition, the information is sent to an instrument through a CAN message, and the instrument describes whether the alarm itself fails or the gas leakage quantity on a gas cylinder exceeds a specified value through two different alarm indicators or characters. Meanwhile, the leakage alarm is also provided with an indicator lamp for judging the working state of the alarm by a driver under the vehicle, after the power is turned on, the inside of the system is subjected to self-checking and preheating for about 2-3 minutes, and the indicator lamp on the alarm is bright for 0.5s and twinkling for 0.5s in the preheating stage; after preheating is finished, the normal detection stage is carried out, the indicator lamp is on for 1s and dark for 3 seconds, and when the methane quantity higher than 10% LEL is monitored, the indicator lamp is on for 0.25s and fast blinks in 0.25s, and beeping is carried out; if the internal fault occurs, the indicator light 2s is on and the 2s darkness indicates maintenance.
The automobile instrument is internally provided with the CAN control module, CAN analyze CAN messages, is internally provided with the independent display screen, and CAN display specific numerical values of the gas and liquid of the gas cylinder, for example: for the leakage alarm function, when receiving CAN messages with different IDs sent by the leakage alarm, the gas cylinder 1:360L respectively drives different red alarm symbols to light up on the instrument, and simultaneously, sounds along with a buzzer inside the instrument.
The heavy-duty gas state detection system provided by the embodiment 2 of the invention is not limited to the number of heavy-duty gas state detection devices listed in the embodiment 2, and a person skilled in the art can reasonably select the number of gas cylinders or the number of leakage detection points according to the situation.
According to the heavy-duty gas state detection system provided by the embodiment 2 of the invention, according to the characteristics of the LNG gas vehicle, in order to increase the cruising ability of the vehicle, the number of gas cylinders for storing gas is usually 2 or 3, the heavy-duty gas state detection is an indispensable element on the vehicle, the liquid level detection and the leakage detection CAN be simultaneously carried out, the occupied space is reduced, the instrument on the vehicle is used as a display device, the cost of an independent display screen is saved, the advantages of CAN bus transmission signals are combined with the vehicle, the residual liquid amount and the leakage alarm signals are transmitted by using CAN messages, and the using amount of wiring harnesses on the vehicle CAN be greatly reduced.
The detailed description of the relevant part of the heavy truck gas state detection device in the heavy truck gas state detection system provided in embodiment 2 of the present application can be referred to in the heavy truck gas state detection device provided in embodiment 1 of the present application, and will not be repeated here.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements is inherent to. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. In addition, the parts of the above technical solutions provided in the embodiments of the present application, which are consistent with the implementation principles of the corresponding technical solutions in the prior art, are not described in detail, so that redundant descriptions are avoided.
While the specific embodiments of the present invention have been described above with reference to the drawings, the scope of the present invention is not limited thereto. Other modifications and variations to the present invention will be apparent to those of skill in the art upon review of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. On the basis of the technical scheme of the invention, various modifications or variations which can be made by the person skilled in the art without the need of creative efforts are still within the protection scope of the invention.
Claims (10)
1. The heavy truck gas state detection device is characterized by comprising a control module, a transmission module and a detection module; the detection module is connected to the input end of the control module through the transmission module; the output end of the control module is connected with an alarm device;
the detection module comprises a liquid level sensor and a leakage sensor; the liquid level sensor is arranged inside the gas cylinder; the leakage sensor is arranged on the surface of the section of the external output pipeline of the gas cylinder; the control module is used for acquiring the quantity of the residual liquid natural gas in the gas cylinder through the liquid level sensor; or acquiring whether gas leakage exists outside the gas cylinder through a leakage sensor; and alarming when detecting that the quantity of the residual liquid natural gas in the gas cylinder is not full of the demand or that the gas leakage exists outside the gas cylinder.
2. The heavy truck gas state detection device according to claim 1, wherein the transmission module adopts a transmitter and is used for converting an electric signal acquired by a liquid level sensor into a CAN message and sending the CAN message to the control module; or the electric signals collected by the leakage sensor are converted into CAN messages and sent to the control module.
3. The heavy truck gas state detection device according to claim 1, wherein the output end of the control module is also connected with a whole vehicle instrument for displaying the residual liquid natural gas amount in the gas cylinder acquired by the liquid level sensor; and or data indicating the presence of a gas leak outside the cylinder.
4. The heavy truck gas state detection device according to claim 4, wherein the output end of the controller is connected with a whole vehicle instrument through a CAN message.
5. A heavy truck gas state detection system, which is characterized by comprising a plurality of heavy truck gas state detection devices, a switching module and a power supply module which are connected with each other, wherein the heavy truck gas state detection devices are as claimed in claims 1 to 4;
the power supply module is connected with each heavy-duty card gas state detection device and is used for supplying power to each heavy-duty card gas state detection device; the switching module is connected with a whole vehicle instrument; after the power supply module is electrified for each heavy-truck gas state detection device, ID numbers are automatically allocated for each heavy-truck gas state detection device, the heavy-truck gas state detection device executes liquid level detection or leakage detection, and the residual liquid amount of the gas cylinder or the leakage condition of the gas cylinder which is required to be displayed by the whole vehicle instrument is selected through the switching module.
6. The heavy truck gas state detection system of claim 5, wherein the heavy truck gas state detection devices are all grounded.
7. The heavy truck gas state detection system of claim 5, wherein the switching module employs a self-resetting switch; the self-resetting switch is provided with two gears of 0 and 1.
8. The heavy truck gas state detection system according to claim 7, wherein when the heavy truck gas state detection system performs liquid level detection and the self-reset switch is in 0 level, a circuit in the self-reset switch is not connected, and the whole vehicle instrument judges the displayed heavy truck gas state detection device according to the CAN message ID priority sent by the heavy truck gas state detection device; when the self-resetting switch is in 1 gear, the whole vehicle instrument circulates to display the residual liquid amounts of different gas cylinders each time the self-resetting switch is pressed down.
9. The heavy truck gas state detection system according to claim 7, wherein when the heavy truck gas state detection system performs leakage detection and the self-reset switch is in 0 gear, a circuit in the self-reset switch is not connected, and the whole vehicle instrument judges the displayed leakage position according to the CAN message ID priority sent by the heavy truck gas state detection device; when the self-resetting switch is in 1 gear, the whole vehicle instrument circulates to display the leakage position every time the self-resetting switch is pressed down.
10. The heavy truck gas state detection system of claim 9, wherein each heavy truck gas state detection device is connected to an indicator light when the heavy truck gas state detection system performs leak detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311725383.4A CN117755065A (en) | 2023-12-14 | 2023-12-14 | Heavy truck gas state detection device and detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311725383.4A CN117755065A (en) | 2023-12-14 | 2023-12-14 | Heavy truck gas state detection device and detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117755065A true CN117755065A (en) | 2024-03-26 |
Family
ID=90317410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311725383.4A Pending CN117755065A (en) | 2023-12-14 | 2023-12-14 | Heavy truck gas state detection device and detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117755065A (en) |
-
2023
- 2023-12-14 CN CN202311725383.4A patent/CN117755065A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5371487A (en) | Method and apparatus for indicating a changed condition | |
| CN106227122B (en) | A kind of detection of vehicle mounted failure and early warning system | |
| CN202631261U (en) | Automobile fault real-time self-checking system | |
| US5453939A (en) | Computerized diagnostic and monitoring system | |
| US5949330A (en) | Method and apparatus for displaying sensor outputs in a diagnostic system | |
| CN201457085U (en) | CAN bus instrument assembly | |
| CN202632090U (en) | Automobile fault diagnosis device based on intelligent mobile phone | |
| CN110928271A (en) | Automobile self-service diagnosis method and system | |
| CN103499968A (en) | Smart phone-based automobile fault diagnosis device | |
| CN102975766A (en) | Electric hydraulic power-assisted steering system failure diagnosing method and controller | |
| US5748076A (en) | Apparatus for alarming of an abnormality of tire air pressure | |
| CN117755065A (en) | Heavy truck gas state detection device and detection system | |
| CN101628530A (en) | Vehicle tire pressure alarm system | |
| CN201281659Y (en) | System for recognizing and diagnosing automobile chassis fault | |
| CN112002035A (en) | Multifunctional intelligent terminal system for Internet of vehicles | |
| CN208630473U (en) | A kind of vehicle turn signal fault self-checking and the control circuit for extinguishing early warning conversion equipment | |
| CN103009960A (en) | Monitoring equipment and method for electric air compression system of electric vehicle | |
| CN202753852U (en) | Monitoring and alarming system for automobile | |
| CN110758287A (en) | Emergency system for abnormal flameout of vehicle | |
| CN110481464A (en) | A kind of control method and its device of vehicle low-voltage alarm shielding | |
| CN206115200U (en) | On -vehicle fault detection and early warning system | |
| WO1999028145A1 (en) | Vehicle assistance system | |
| CN111231926B (en) | Intelligent early warning system for automobile brake fluid | |
| JPH0478741A (en) | Self-diagnostic result annunciator of automobile | |
| CN103538535B (en) | Vehicle information management system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |