Reversing radar system for vehicle

Abstract

The utility model provides a reversing radar system for a vehicle, which belongs to the technical field of vehicle monitoring and comprises a control module, and a sensing module, an alarm module and a display module which are connected with the control module, the sensing module comprises a first sensing subunit and a second sensing subunit, and the first sensing subunit is used for measuring a distance value between a vehicle and an obstacle and sending the distance value to the control module; the second sensing subunit is used for sensing a human body signal and sending the human body signal to the control module; and the control module is used for receiving the distance value and the human body signal, and transmitting an alarm command to the alarm module when the distance value is smaller than a target threshold value and / or the human body signal is received by the control module. According to the reversing radar system for the vehicle, the information state of objects or human bodies behind the vehicle can be broadcasted in real time through voice, so that the reversing safety of a driver is improved, the safety of the vehicle is guaranteed, and the personal safety of other people is also guaranteed.

Description

Technical Field

[0001] The present application relates to the field of vehicle monitoring technology, and in particular to a vehicle reversing radar system. Background Art

[0002] At present, my country's automobile industry is developing more and more rapidly. Automobiles have brought great convenience to our daily travel and greatly improved our quality of life. However, some problems that need special attention have also arisen. For example, traffic accidents caused by various collisions due to reversing often occur, which have caused serious social and economic impacts and personal property losses to the victims and the parties involved, and even threaten the lives of the victims.

[0003] After investigation, it was found that most drivers have certain blind spots when reversing. Car owners usually rely on their years of practical experience to judge the reversing distance. Although the rearview mirror with multiple curvatures and large tilted fields of view can effectively increase the driver's viewing angle, help the driver reduce the blind spot, and play a certain auxiliary role in reversing, there are still blind spots, and the distance measured by the driver is not accurate, which is why the incidence of reversing accidents exceeds the accident rate of cars driving at high speeds.

[0004] In addition, more high-end cars will be equipped with reversing images, and the driver can observe the situation behind the car through video, but for people who lack a sense of distance, it is not very meaningful. It can be seen that designing a reversing radar system can increase the driver's awareness of danger and effectively avoid reversing traffic accidents. Utility Model Content

[0005] The present application is to provide a vehicle reversing radar system, which aims to realize ultrasonic ranging and human signal detection, so as to detect obstacles behind the vehicle and the distance between people and the vehicle. It can also make real-time voice broadcasts of the information status of objects or human bodies behind the vehicle, thereby improving the safety of the driver's reversing, ensuring both the safety of the vehicle and the personal safety of others.

[0006] The present application provides a vehicle reversing radar system, comprising:

[0007] A control module and a sensing module, an alarm module and a display module connected to the control module;

[0008] The sensing module includes a first sensing sub-unit and a second sensing sub-unit, wherein the first sensing sub-unit is used to measure the distance value between the vehicle and the obstacle and send the distance value to the control module; the second sensing sub-unit is used to sense a human body signal and send the human body signal to the control module;

[0009] The control module is used to receive the distance value and the human body signal, and when the distance value is less than a target threshold value and / or when the human body signal is received, the control module transmits an alarm command to the alarm module;

[0010] The alarm module outputs alarm information based on the alarm command;

[0011] The control module is further used to send the distance value to the display module, and the display module is used to display the distance value.

[0012] Optionally, the first sensing subunit includes an ultrasonic sensor, and the second sensing subunit includes an infrared sensor, and both the ultrasonic sensor and the infrared sensor are arranged on the vehicle.

[0013] Optionally, the time difference between the ultrasonic sensor transmitting the ultrasonic wave and receiving the ultrasonic wave is greater than or equal to 60 ms.

[0014] Optionally, the alarm module includes an audible and visual alarm unit, which includes a buzzer and an indicator light. The audible and visual alarm unit controls the buzzer and the indicator light to start working based on the alarm command.

[0015] Optionally, the alarm module includes a voice broadcast unit, and the voice broadcast unit outputs voice information based on the alarm command.

[0016] Optionally, the vehicle reversing radar system further includes:

[0017] A button module is connected to the control module, and is used to increase or decrease the size of the target threshold.

[0018] Optionally, the button module includes a first button sub-unit, a second button sub-unit and a third button sub-unit, and the first button sub-unit, the second button sub-unit and the third button sub-unit are respectively connected to the control module.

[0019] Optionally, the control module includes a single chip microcomputer.

[0020] Optionally, the vehicle reversing radar system further includes:

[0021] A reset module is connected to the control module, and is used to send a clock signal and a reset signal to the control module.

[0022] Beneficial effects:

[0023] The present application provides a vehicle reversing radar system, which is provided with a control module, a sensing module, an alarm module and a display module, wherein the sensing module includes a first sensing subunit for measuring the distance value between the vehicle and the obstacle, and a second sensing subunit for sensing the human body signal, and the control module is used to receive the distance value and the human body signal, and when the distance value is less than a target threshold value and / or when the human body signal is received, the control module transmits an alarm command to the alarm module; in this way, the system can be used to realize obstacle ranging and human body signal detection, so as to detect obstacles behind the vehicle and the distance between a person and the vehicle, and can also alarm the information status of the object or human body behind the vehicle in real time, thereby improving the safety of the driver's reversing, ensuring both the safety of the vehicle and the personal safety of others. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0025] Figure 1 It is a structural schematic diagram of a vehicle reversing radar system proposed in one embodiment of the present application;

[0026] Figure 2 is a schematic structural diagram of another vehicle reversing radar system proposed in one embodiment of the present application;

[0027] Figure 3 It is a structural schematic diagram of a control module in a vehicle reversing radar system proposed in one embodiment of the present application;

[0028] Figure 4 It is a structural schematic diagram of a first sensing sub-unit in a vehicle reversing radar system proposed in one embodiment of the present application;

[0029] Figure 5 It is a structural schematic diagram of a second sensing sub-unit in a vehicle reversing radar system proposed in one embodiment of the present application;

[0030] Figure 6 It is a structural schematic diagram of an audible and visual alarm unit in a vehicle reversing radar system proposed in one embodiment of the present application;

[0031] Figure 7 This is a structural schematic diagram of a voice broadcast unit in a vehicle reversing radar system proposed in one embodiment of the present application;

[0032] Figure 8It is a structural schematic diagram of a display module in a vehicle reversing radar system proposed in one embodiment of the present application;

[0033] Fig. 9 This is a structural schematic diagram of a button module in a vehicle reversing radar system proposed in one embodiment of the present application;

[0034] Fig.10 It is a structural schematic diagram of a reset module in a vehicle reversing radar system proposed in one embodiment of the present application;

[0035] Fig.11 It is a structural schematic diagram of a crystal oscillator module in a vehicle reversing radar system proposed in one embodiment of the present application.

[0036] Explanation of the reference numerals: 10, control module; 20, sensing module; 201, first sub-sensing unit; 202, second sub-sensing unit; 30, alarm module; 301, sound and light alarm unit; 302, voice broadcast unit; 40, display module; 50, button module; 60, reset module; 70, crystal oscillator module; 80, power supply module. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] Reference Figure 1 As shown, a vehicle reversing radar system disclosed in an embodiment of the present application includes a control module 10 , a sensing module 20 , an alarm module 30 and a display module 40 .

[0039] Specifically, refer to Figure 3 As shown, the control module 10 is a single-chip microcomputer STC89C52 (hereinafter collectively referred to as a single-chip microcomputer), which includes a plurality of pins. By connecting other modules in the radar system through different pins, the control module 10 can be used to control each module, or the information output by each module of the control module 10 can be used, or the control module 10 can be used to output commands to each module.

[0040] Reference Figure 1 As shown, the sensing module 20 includes a first sub-sensing unit 201 and a second sub-sensing unit 202 .

[0041] Among them, refer to Figure 4As shown, the first sub-sensing unit 201 uses the HC-SR04 sensor to measure the distance between the car and the obstacle, and the single-chip microcomputer is connected to the port 2 (Ting) and the port 3 (Echo) of the first sub-sensing unit 201 through the pins P2.4 and P2.5. In the specific implementation, the first sub-sensing unit 201 will calculate the distance according to the time difference and propagation speed between the ultrasonic wave emitted by its transmitting end and the ultrasonic wave received by the receiving end, thereby realizing the detection of the distance between the car and the obstacle, and the first sub-sensing unit 201 will send the calculated distance value to the control module 10. In addition, in order to ensure the accuracy and effectiveness of the data, it is necessary to ensure that the transmission and reception time is above 60ms. The detection distance of the HC-SR04 sensor is 0.01m-4.00m, the accuracy is as high as 0.01m, the structure is simple, the price is low, and the energy consumption is low.

[0042] Reference Figure 5 As shown, the second sub-sensing unit 202 uses the HC-SR501 infrared sensor to detect human body signals. The single chip microcomputer is connected to the data output end of the second sub-sensing unit 202 through the pin P3.2. The human body temperature is relatively fixed and can emit infrared rays of about 10 microns. The HC-SR501 infrared sensor is based on this characteristic and detects infrared rays through the built-in pyroelectric element to detect human body signals. When a human body signal is sensed, its output end sends a human body signal to the control module 10.

[0043] Reference Figure 1 As shown, the alarm module 30 is connected to the control module 10, and the control module 10 is used to receive the distance value and the human body signal. When the distance value is less than the target threshold and / or when the human body signal is received, the control module 10 transmits the alarm command to the alarm module 30, and then the alarm module 30 can output the alarm information based on the alarm command.

[0044] In the embodiments of this application, refer to Figure 1 As shown, the alarm module 30 includes an audible and visual alarm unit 301 and a voice broadcast unit 302 .

[0045] Specifically, refer to Figure 6As shown, the sound and light alarm unit 301 can send out a sound and light alarm signal when the distance value between the car and the obstacle is less than the target threshold. The sound and light alarm unit 301 is mainly composed of a buzzer F1, a transistor Q1, an indicator light D1, a resistor R3 and a resistor R2. The buzzer F1 is used to send out a sound alarm, the current limiting resistor R3 is used to protect the transistor, the indicator light D1 is used for light alarm, the resistor R2 is used for voltage division, the transistor is used to increase the driving ability of the single chip microcomputer, and the single chip microcomputer is connected to the control end of the transistor Q1 through the pin P1.5 port. When the P1.5 port of the single chip microcomputer is at a low level, the sound and light alarm unit 301 starts to start the sound and light alarm work.

[0046] Reference Figure 7 As shown, the voice broadcast unit 302 is a DY-SV5W voice module. The voice playback control of DY-SV5W is completed through a single bus communication mode. The single chip microcomputer is connected to the voice broadcast unit 302 through pins P1.7 and P1.6. Among them, pin P1.7 is a single bus output for controlling the playback of voice; pin P1.6 is used to identify the voice playback state. The voice broadcast unit 302 can issue a voice prompt message when a dangerous obstacle or person appears behind the car. For example, when the distance between the car and the obstacle is less than the target threshold, and or when a pedestrian appears, an alarm voice such as "Dangerous distance, please pay attention!" is issued.

[0047] Reference Figure 1 As shown, the display module 40 is connected to the control module 10, and the control module 10 is also used to send the distance value to the display module 40 to display the distance value.

[0048] Specifically, refer to Figure 8 As shown, the display module 40 is used to display the distance between obstacles or people and cars. The display module 40 is implemented by a 4-bit dynamic common anode LED (light emitting diode) digital tube, and the single chip microcomputer is connected to the control end of the driving transistors Q1, Q2, Q3, and Q4 of the digital tube through pins P1.0 (RS), P1.1 (RW), P1.2 (EN), and P1.3 (P13), and the single chip microcomputer is connected to the a, b, c, d, e, f, g, and dp ends of the digital tube through pins P0.0-P0.7 (B0-B7) to complete the real-time control of the dynamic display.

[0049] In the specific implementation, the distance and other data to be displayed are sent to the microcontroller for processing and then transmitted to the LED digital tube screen for dynamic display. Among them, pins P1.0, P1.1, P1.2, and P1.3 are used to control the bit code information of the LED digital tube, and pins P0.0-P0.7 are used to control the segment code information of the LED digital tube. The display accuracy is "cm".

[0050] Reference Figure 2As shown, in one embodiment, the radar system further includes a key module 50 connected to the control module 10, and the key module 50 is used to increase or decrease the size of the target threshold.

[0051] Specifically, refer to Fig. 9 As shown, the key module 50 is composed of three independent keys, which are used to control the upper and lower limits of each parameter. In the embodiment of the present application, the key module 50 includes a first key subunit, a second key subunit and a third key subunit, and the first key subunit, the second key subunit and the third key subunit correspond to the "minus key K1", "plus key K2" and "setting key K3" respectively, and the single chip microcomputer is connected to the key control input terminal through pins P3.5-P3.7.

[0052] It can be understood that the first button sub-unit, the second button sub-unit and the third button sub-unit are all non-self-locking touch switches. The contacts will close when pressed and open when released. When a button sub-unit is pressed, the microcontroller interface connected to it will be connected to the ground electrode. When the microcontroller port detects a change from a high level to a low level, the corresponding control action can be implemented.

[0053] Reference Figure 2 As shown, in one embodiment, the radar system further includes a reset module 60 connected to the control module 10 , and the reset module 60 is used to send a clock signal and a reset signal to the control module 10 .

[0054] Specifically, refer to Fig.10 As shown, the reset module 60 is composed of a resistor R6, a capacitor C1 and a button K1, and is used to provide a clock signal and a reset signal for the system. The single chip microcomputer is connected to the input end of the reset module 60 through pins XTAL1 and XTAL2, and is connected to the control end of the reset module 60 through pin RST.

[0055] Reference Figure 2 As shown, in one embodiment, the radar system further includes a crystal oscillator module 70 connected to the control module 10. Fig.11 As shown, the crystal oscillator module 70 is composed of capacitors C2 and C4 and a 12M crystal oscillator.

[0056] Reference Figure 2 As shown, in one embodiment, the radar system further includes a power module 80 connected to the control module 10, and the power module 80 is used to provide power for the radar system.

[0057] The main steps for debugging the vehicle reversing radar system provided in the embodiment of the present application are as follows:

[0058] (1) Startup initialization debugging

[0059] After the system is powered on, the LED digital tube lights up. When there is no obstacle in front, the system displays "-.--".

[0060] (2) Distance test

[0061] After power-on initialization, the digital tube will search for the target reference object, and the ultrasonic sensor HC-SR04 will transmit the sensed distance information to the microcontroller for processing, and then send it to the digital tube to display the distance data, which is 0.69m in the embodiment.

[0062] (3) Obstacle distance limit test

[0063] As the ultrasonic sensor and the obstacle get closer, the data displayed on the digital tube becomes smaller and smaller. When it is lower than the safety setting value, the buzzer intermittently emits a "beep" alarm, accompanied by a red LED light flashing continuously. When the distance between the sensor and the obstacle increases, the radar returns to normal, which is 10.4m in the embodiment.

[0064] (4) Setting safety distance debugging

[0065] First press the "Set Key K3", at this time, the digital tube screen will display the "b---" interface, then press the "Minus Key K1" or "Plus Key K2" to set the safety distance. When the safety distance is set, press the "Set Key K3" again to confirm the set safety distance. At this time, the system returns to the normal working interface, and the ultrasonic wave continues to complete the distance measurement, which is 0.30m in the embodiment.

[0066] The vehicle reversing radar system provided by the embodiment of the present application can use ultrasonic signals to detect the distance between the obstacle behind the vehicle and the vehicle, can also detect human body signals in real time, and can complete real-time voice broadcast according to the information status of the object and human body behind the vehicle. The experimental results show that the system not only allows the driver to complete reversing more conveniently, but also greatly reduces the reversing scratches caused by the driver's lack of experience, effectively avoids the occurrence of reversing traffic accidents, thereby further enhancing the driver's reversing safety, ensuring both vehicle safety and the personal safety of others, and has certain practicality and high reliability.

[0067] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] It should also be noted that, in this article, the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or terminal device. Without more restrictions, an element defined by the phrase "comprising a ..." does not exclude the existence of other identical elements in the process, method, article or terminal device comprising the element.

[0069] The technical solution provided by the present application is described in detail above. The principle and implementation method of the present application are described in this article using specific examples. The description of the above embodiments is only used to help understand the present application, and the content of this specification should not be understood as limiting the present application. At the same time, for those of ordinary skill in the art, according to the present application, there will be different forms of changes in the specific implementation methods and application scopes. It is not necessary and impossible to list all the implementation methods here, and the obvious changes or modifications derived therefrom are still within the scope of protection of the present application.

Claims

1. A vehicle reversing radar system, characterized in that: include: A control module and a sensing module, an alarm module and a display module connected to the control module; The sensing module includes a first sensing sub-unit and a second sensing sub-unit, wherein the first sensing sub-unit is used to measure the distance value between the vehicle and the obstacle and send the distance value to the control module; the second sensing sub-unit is used to sense a human body signal and send the human body signal to the control module; The control module is used to receive the distance value and the human body signal, and when the distance value is less than a target threshold value and / or when the human body signal is received, the control module transmits an alarm command to the alarm module; The alarm module outputs alarm information based on the alarm command; The control module is further used to send the distance value to the display module, and the display module is used to display the distance value.

2. The vehicle reversing radar system according to claim 1, characterized in that: The first sensing subunit includes an ultrasonic sensor, and the second sensing subunit includes an infrared sensor. Both the ultrasonic sensor and the infrared sensor are arranged on the vehicle.

3. The vehicle reversing radar system according to claim 2, characterized in that: The time difference between the ultrasonic sensor transmitting the ultrasonic wave and receiving the ultrasonic wave is greater than or equal to 60 ms.

4. The vehicle reversing radar system according to claim 1, characterized in that: The alarm module comprises an audible and visual alarm unit, which comprises a buzzer and an indicator light. The audible and visual alarm unit controls the buzzer and the indicator light to start working based on the alarm command.

5. The vehicle reversing radar system according to claim 1, characterized in that: The alarm module includes a voice broadcast unit, and the voice broadcast unit outputs voice information based on the alarm command.

6. The vehicle reversing radar system according to claim 1, characterized in that: The vehicle reversing radar system also includes: A button module is connected to the control module, and is used to increase or decrease the size of the target threshold.

7. The vehicle reversing radar system according to claim 6, characterized in that: The key module includes a first key subunit, a second key subunit and a third key subunit, and the first key subunit, the second key subunit and the third key subunit are connected to the control module respectively.

8. The vehicle reversing radar system according to claim 1, characterized in that: The control module includes a single chip microcomputer.

9. The vehicle reversing radar system according to claim 1, characterized in that: The vehicle reversing radar system also includes: A reset module is connected to the control module, and is used to send a clock signal and a reset signal to the control module.

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