CN205311475U - Vehicle safe distance alarm prompting device - Google Patents

Abstract

A vehicle safety distance alarm prompting device, comprising a power module, a transceiver, a display device and a distance measuring probe arranged at the rear of the vehicle, the transceiver, display device, and distance measuring probe are all connected to the power module, the display device and the distance measuring probe The probe is connected to the transceiver through the communication module. The utility model arranges a display device and a distance measuring probe at the rear of the vehicle, measures the distance and approach speed of the rear car and the vehicle through the distance measuring probe, and sends the distance, that is, the approach speed, to the transceiver, and the transceiver will control the distance in different situations The LED display screen installed at the rear of the car prompts different content, provides the most intuitive information to the driver of the rear car, helps the driver of the rear car to adjust the speed of the vehicle according to the provided information such as the distance between vehicles, and reduces the occurrence of rear-end collision accidents; The novel utility model has the advantages of simple structure and convenient use, which is beneficial to the driving safety of the driver.

Description

A vehicle safety distance warning prompt device

technical field

The utility model belongs to the technical field of automobile safety, relates to an automobile safety early warning device, in particular to a vehicle safety distance alarm prompting device.

Background technique

At present, with the rapid development of my country's economy, the number of car ownership is also increasing, followed by frequent traffic accidents. And vehicle rear-end collision has accounted for very large proportion in traffic accident. The main reason for the rear-end collision of the vehicle is that the drivers of the front and rear vehicles are inaccurate in judging the distance between the two vehicles and the speed of the vehicle, and it is too late to brake within a certain distance. Therefore, if the distance and relative speed between vehicles can be obtained in advance, the occurrence of rear-end collision accidents will be effectively reduced, and the loss of life and property of the people will be reduced. But at present, in the car safety system, the research results mainly include two parts: the car forward collision avoidance system and the reversing radar. The disadvantage of the forward collision avoidance system is that the driver cannot intuitively see the distance and approaching speed from the vehicle in front, and such a system can only effectively reduce the rear-end collision of the vehicle in front, and cannot effectively help the driver of the rear vehicle not to rear-end the vehicle The shortcoming of reversing radar is then mainly that the detection distance is too short, which can hardly have due effect on anti-rear-end collision.

Utility model content

Aiming at the deficiencies in the prior art, the purpose of the utility model is to provide a vehicle safety distance warning and prompting device.

In order to achieve the above object, the utility model adopts the following technical solutions:

A vehicle safety distance alarm prompting device, comprising a power module, a transceiver, a display device and a distance measuring probe arranged at the rear of the vehicle, the transceiver, display device, and distance measuring probe are all connected to the power module, the display device and the distance measuring probe The probe is connected to the transceiver through the communication module.

It also includes a waterproof casing arranged at the rear of the vehicle, and the display device is arranged in the waterproof casing.

The display device is an LED display screen.

The communication module includes a CAN communication module and an RS-485 communication module, the display device is connected to the transceiver through the RS-485 communication module, and the distance measuring probe is connected to the transceiver through the CAN communication module.

The display device is fixed by bolts and brackets welded to the rear of the vehicle.

The transceiver is also connected to the cab display screen.

Compared with the prior art, the utility model has beneficial effects: the utility model is provided with a display device and a distance measuring probe at the rear of the vehicle, and measures the distance and approach speed of the rear vehicle and the vehicle through the distance measurement probe, and the distance is The approach speed is sent to the transceiver, and the transceiver will control the LED display installed at the rear of the car to prompt different content in different situations, provide the most intuitive information to the driver of the rear car, and help the driver of the rear car according to the distance provided, etc. The information adjusts the speed of the vehicle to reduce the occurrence of rear-end collision accidents; the utility model has the advantages of simple structure, convenient use, and is beneficial to the driving safety of the driver.

Further, the transceiver will also send information such as the distance and approaching speed of the following vehicle to the own vehicle to the display device in the cab of the own vehicle, and the driver of the own vehicle can also make appropriate adjustments to the current speed of the vehicle according to these information.

Further, the display device is arranged in the waterproof casing, which is beneficial to the display of the display content in rainy days, and at the same time prolongs the life of the display device.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a schematic diagram of the hardware structure of the utility model.

Among them, 1 is a display device, 2 is a distance measuring probe, 3 is a transceiver, 4 is a cab display screen, and 5 is a power module.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

With reference to Fig. 1 and Fig. 2, the utility model comprises a power supply module 5, a transceiver 3, a display device 1 and a distance-measuring probe 2 arranged at the rear of the car, and the transceiver 3, the display device 1, and the distance-measuring probe 2 are all connected to the power supply The modules 5 are connected, the display device 1 and the distance measuring probe 2 are connected to the transceiver 3 through the communication module, and the transceiver 3 is connected to the cab display screen 4 . The display device 1 is fixed by a bracket welded by bolts and the rear of the vehicle. In addition, a waterproof casing is provided at the rear of the vehicle, and the display device 1 is disposed in the waterproof casing, and the waterproof casing can protect the display device. The display device 1 is an LED display screen.

The communication module includes a CAN communication module and an RS-485 communication module, the display device 1 is connected to the transceiver 3 through the RS-485 communication module, and the ranging probe 2 is connected to the transceiver 3 through the CAN communication module.

The RS-485 communication module mainly completes the communication between the controller and the LED display, displays different distances or alarm prompts under different ranging conditions, and prompts the driver of the vehicle behind to change the driving speed to prevent rear-end collisions; the CAN communication module The main function is to send the distance measured by the ranging probe to the CAN bus of the vehicle through CAN communication, and then display it on the display device in the cab to help the driver properly adjust the vehicle speed to prevent rear-end collisions.

The power supply module is a 24V power supply, and the main function of the power supply module is to provide a stable and reliable power supply for the LED display screen and the distance measuring probe to ensure the normal operation of these two parts.

Other technical characteristics of the utility model:

The LED display is a secondary-development single red LED display containing a control card, and its control interface is an RS-485 interface, and the character packet corresponding to the content to be displayed on the LED display is sent through RS-485 displayed on the LED display.

The power supply module is a 24V DC voltage, which can be provided by the vehicle's own 24V power supply, and provides stable and reliable power supply voltage and power supply current for each hardware module of the safety distance alarm prompt device.

The CAN communication module adopts the CAN transceiver chip for peripheral circuit design, realizes the level matching conversion between the CAN bus level and the CAN controller, and combines the driver software design to realize CAN message communication.

The working process of the utility model is as follows: when the vehicle is started, power is supplied to the safety distance alarm prompting device, and the device first performs a self-inspection, if the self-inspection fails, the device performs an alarm prompt, and the device continues to be used after troubleshooting. When the device passes the self-test and enters the normal working state, the distance measuring probe detects the distance of the vehicle behind and the relative speed to the vehicle in real time, and the controller controls the LED display installed at the rear of the vehicle to display different information according to the received distance and relative speed. content, provide information to drivers of vehicles behind, and reduce the occurrence of rear-end collision accidents.

The content displayed on the LED display is different according to the distance between the rear vehicle and the vehicle and the approaching speed. When the vehicle distance is greater than the maximum distance detectable by the distance measuring probe or greater than the set prompt distance value, the LED display will display in a constant light "Keep the distance between vehicles"; when it is detected that the distance between the vehicle and the rear vehicle is less than the set prompt distance value and greater than the set alarm prompt distance value, the LED display will flash once per second to display the distance between the front and rear vehicles, The specific display content is "vehicle distance: **m"; when the detected vehicle distance is less than the set alarm prompt distance value, the LED display will flash once per second to display the alarm prompt signal: "Dangerous! Please slow down" . The control method of the LED display is to write the data packets corresponding to the content to be displayed into the control card that comes with the LED display through the RS-485 bus, and to display different content under different conditions.

The data uploaded by the ranging probe to the CAN bus can be read by the body controller at the same time, and the information is displayed on the display device in the cab. The driver of the vehicle can adjust the speed of the vehicle according to these data to make driving safer.

After the utility model device is powered on, it first performs self-inspection, and enters the working state after passing the self-inspection. The distance measuring probe installed at the rear of the vehicle detects the distance and approach speed between the rear vehicle and the vehicle in real time, and sends these information through the CAN bus. The LED display installed at the rear of the vehicle displays different information such as distance prompts and alarm prompts according to the distance between the vehicle behind and the vehicle and the approaching speed, prompting the driver of the vehicle behind to adjust the speed; at the same time, the driver of the vehicle can also pass these data through the cab. The display device observes and adjusts the speed of the vehicle autonomously, and finally achieves the purpose of preventing rear-end collisions.

The components used in the vehicle safety distance alarm prompting device of the utility model are all known products in the market, and those skilled in the art can realize the connection and function debugging of each electronic device according to the technical achievements of the application.

Claims (5)

1. A vehicle safety distance alarm prompting device is characterized in that it comprises a power module (5), a transceiver (3), a display device (1) and a distance measuring probe (2) arranged at the rear of the vehicle, and the transceiver (3), the display device (1), the distance measuring probe (2) are all connected to the power supply module (5), and the display device (1) and the distance measuring probe (2) are connected to the transceiver (3) through the communication module; The communication module includes a CAN communication module and an RS-485 communication module, the display device (1) is connected to the transceiver (3) through the RS-485 communication module, and the ranging probe (2) is connected to the transceiver (3) through the CAN communication module connected. 2. The vehicle safety distance warning and prompting device according to claim 1, further comprising a waterproof casing arranged at the rear of the vehicle, and the display device (1) is arranged in the waterproof casing. 3. The vehicle safety distance warning and prompting device according to claim 1 or 2, characterized in that the display device (1) is an LED display. 4 . The vehicle safety distance warning and prompting device according to claim 1 , characterized in that, the display device ( 1 ) is fixed by bolts and brackets welded to the rear of the vehicle. 5. The vehicle safety distance warning and prompting device according to claim 1, characterized in that, the transceiver (3) is also connected to the cab display screen (4).