Dangerous chemical transport vehicle speed detection device and method

Abstract

The invention discloses a vehicle speed detection device and method for a hazardous chemical substance transportation vehicle, and relates to the field of traffic transportation, and the method comprises the following steps: obtaining a driving speed: connecting a speed measurement device to a CAN bus of the hazardous chemical substance transportation vehicle; transmitting the acquired driving speed data to the 4G terminal; data uploading: the 4G terminal uploads the driving speed data to a background monitoring system, and the background monitoring system judges the received driving speed data according to a preset vehicle speed threshold value; data analysis: when the driving speed data exceeds a preset vehicle speed threshold value, a prompt device sends prompt information that you are overspeed to a driver so as to remind the driver to decelerate; meanwhile, the 4G terminal sends an instruction to the sensing layer device. The device is more accurate in vehicle speed detection, is not influenced by pulse signals or GPS signals, is more effective and direct in background supervision, is simple, is convenient to install, and is low in cost.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of transportation, and specifically to a vehicle speed detection device and method for a hazardous chemicals transport vehicle. Background Art

[0002] Dangerous chemical transport vehicles belong to the category of high-risk goods transport vehicles. They are explosive, flammable, toxic, corrosive and radioactive, and pose a potential threat to people's safety. Therefore, completing the transportation task is a highly technical and professional job. The speed detection of hazardous chemical transport vehicles is an important part of ensuring road traffic safety. Strictly controlling the speed of hazardous chemical transport vehicles can reduce the occurrence of traffic accidents and ensure road traffic safety.

[0003] Based on the existing technology, 1. The GPS or Beidou speed measurement currently used in the industry will result in inaccurate speed when the signal is weak, and the real-time speed of the vehicle cannot be obtained, which brings certain troubles to industry supervision. Static drifting phenomenon may also occur when the vehicle is parked in an underground parking lot or there are obstructions; 2. Using existing equipment to pick up the pulse speed of the vehicle, because the pulse signal cannot be found due to different models, or some equipment does not have a pulse monitoring signal, which brings great difficulty to installation or construction. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a vehicle speed detection device and method for hazardous chemicals transport vehicles to solve the technical problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A vehicle speed detection device and method for transporting hazardous chemicals, comprising the following steps:

[0007] Driving speed acquisition: Use a speed measuring device to connect to the CAN bus of the hazardous chemicals transport vehicle; obtain the driving speed data and transmit it to the 4G terminal;

[0008] Data upload: The 4G terminal uploads the driving speed data to the background monitoring system, and the background monitoring system judges the received driving speed data according to the preset vehicle speed threshold;

[0009] Data analysis: When the driving speed data exceeds the preset speed threshold, the prompt device will send a prompt message "You are speeding" to the driver to remind the driver to slow down; at the same time, the 4G terminal sends instructions to the perception layer device.

[0010] Preferably, the speed measuring device is directly connected to the CAN bus of the hazardous chemicals transport vehicle; the speed measuring device is specifically a speed sensor and a single-chip microcomputer.

[0011] Preferably, the vehicle speed threshold is set according to the vehicle speed specified by the engineering vehicle enterprise and relevant laws and regulations.

[0012] Preferably, the prompting device is specifically a vehicle-mounted voice prompter.

[0013] Preferably, the sensing layer device includes but is not limited to a vehicle braking system and a vehicle engine control system.

[0014] In summary, the present invention mainly has the following beneficial effects:

[0015] Compared with the prior art, the vehicle speed detection device and method of the present invention will not affect the detection of the speed of the hazardous chemical transport vehicle due to poor pulse signals or GPS signals, even when the vehicle is parked in an underground parking lot or there are obstructions. It uses a wiring harness interface to directly access the CNA bus, directly and accurately obtain the real-time status of the vehicle speed, and the acquisition method is stable and the speed is acquired accurately.

[0016] In addition, the vehicle's onboard peripheral devices can proactively remind the driver of the vehicle's speed status, assisting the driver to better control the speed and ensure driving safety. The background monitoring system can also provide a convenient supervision platform for industry supervision. Industry supervision can monitor the status of hazardous chemicals transport vehicles in real time, further ensuring traffic safety.

[0017] Secondly, this detection method uses a single-chip microcomputer as a speed acquisition detection device, which controls costs, is simple to install, has a low failure rate and is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a flow chart of the detection method of the present invention. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Example

[0021] like Figure 1 As shown, a vehicle speed detection device and method for a hazardous chemical transport vehicle uses a speed measuring device connected to a CAN bus of a hazardous chemical transport vehicle; the acquired driving speed data is transmitted to a 4G terminal;

[0022] The 4G terminal uploads the driving speed data to the background monitoring system, and the background monitoring system judges the received driving speed data according to the preset vehicle speed threshold;

[0023] When the driving speed data exceeds the preset speed threshold, the prompt device will send a "You are speeding" prompt message to the driver to remind the driver to slow down; at the same time, the 4G terminal sends instructions to the perception layer device so that the perception layer device can respond and judge according to the instructions, such as adjusting the vehicle's operating status or triggering other safety measures;

[0024] The speed measuring device is directly connected to the CAN bus of the hazardous chemicals transport vehicle; the speed measuring device is specifically a speed sensor and a single-chip microcomputer, which is used to obtain the vehicle's driving speed data in real time and accurately.

[0025] The speed threshold is set according to the speed specified by the engineering vehicle company and relevant laws and regulations to ensure that the hazardous chemicals transport vehicles travel within a safe speed range.

[0026] The sensing layer devices include but are not limited to the vehicle braking system and the vehicle engine control system. They are used to adjust the vehicle operation status according to the instructions of the 4G terminal to ensure that the hazardous chemicals transport vehicle travels at a safe speed.

[0027] It should be noted that, in this embodiment, the speed threshold is based on relevant regulations. On ordinary roads, the maximum speed of vehicles transporting hazardous chemicals should be controlled within 60 kilometers; on highways, the maximum speed of vehicles transporting hazardous chemicals shall not exceed 80 kilometers; at the same time, such vehicles should drive in the right lane; if the speed specified by the road speed limit sign is lower than the above regulations, the driver must drive according to the speed limit of the sign.

[0028] Taking driving detection on ordinary roads as an example, the speed measuring device integrating the speed sensor and the single-chip microcomputer is directly connected to the CAN bus of the test vehicle through a wiring harness, and connected to the 4G terminal through telecommunications. When the test vehicle starts driving, its actual driving speed will be directly detected and obtained by the speed measuring device through the CAN bus.

[0029] The background monitoring system is preset to be within 60km / h. When the detected vehicle speed data exceeds it, the background monitoring system sends an alarm command signal to the prompt device, that is, the on-board voice prompter. The on-board voice prompter receives the signal and issues a prompt voice "You are speeding". The driver randomly takes braking measures to control the vehicle speed to less than 60km / h, and then the on-board voice prompter stops the alarm.

[0030] It should be further explained that the background monitoring system directly obtains the road section where the vehicle is traveling through GPS positioning, specifically whether it is an ordinary road or a highway section, and sets different vehicle speed thresholds according to the different sections where the vehicle is located.

[0031] At the same time, the 4G terminal gives instructions to the perception layer device, which responds and judges through the vehicle engine control system or the vehicle braking system to determine whether the driver has taken braking measures.

[0032] The working principle of the present invention is:

[0033] MCU model: GD25Q32CSIG; speed sensor model: GD32F105VCT6LQFP100

[0034] like Figure 1 As shown, through the test device integrated with the single-chip microcomputer and the speed sensor, it is connected to the original vehicle CAN bus to obtain the real-time speed of the original vehicle and transmit it to the 4G terminal. At this time, the 4G terminal will issue a command to the reminder on the vehicle. If the speed is greater than the speed specified by the engineering vehicle company, it will prompt "You are speeding" to remind the driver to slow down; at the same time, the 4G terminal gives instructions to the perception layer device to make a response judgment.

[0035] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A vehicle speed detection device and method for transporting hazardous chemicals, characterized in that , including the following steps: S1. Driving speed acquisition: Use a speed measuring device to connect to the CAN bus of the hazardous chemicals transport vehicle; and transmit the acquired driving speed data to the 4G terminal; S2. Data upload: The 4G terminal uploads the driving speed data to the background monitoring system, and the background monitoring system judges the received driving speed data according to the preset vehicle speed threshold; S3. Data analysis: When the driving speed data exceeds the preset speed threshold, the prompt device will send a prompt message "You are speeding" to the driver to remind the driver to slow down; at the same time, the 4G terminal sends instructions to the perception layer device.

2. A vehicle speed detection device and method for transporting hazardous chemicals according to claim 1, characterized in that: The speed measuring device is directly connected to the CAN bus of the hazardous chemicals transport vehicle; the speed measuring device is specifically a speed sensor and a single-chip microcomputer.

3. A vehicle speed detection device and method for transporting hazardous chemicals according to claim 1, characterized in that: The vehicle speed threshold is set according to the vehicle speed specified by the engineering vehicle company and relevant laws and regulations.

4. A vehicle speed detection device and method for transporting hazardous chemicals according to claim 1, characterized in that: The prompting device is specifically a vehicle-mounted voice prompter.

5. A vehicle speed detection device and method for transporting hazardous chemicals according to claim 1, characterized in that: The perception layer device includes but is not limited to a vehicle braking system and a vehicle engine control system.

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