Radar signal collector

Abstract

The utility model relates to a radar signal collector which is characterized in that a PD1-OSCIN pin and a PD1-OSCOUT pin of a main control module are connected with a crystal oscillator module, a reset pin of the main control module is connected with a reset switch module, the main control module is in signal connection with a debugging interface, the radar signal collector further comprises a voltage stabilizing module, a storage module, an isolating switch module, an alarm module and an interface module, the input end of the voltage stabilization module is connected with the main control module and an external voltage source, the storage module is in signal connection with the main control module, the controlled end of the isolation switch module is connected with a PB15 pin of the main control module, the output end of the isolation switch module is connected with a connector, and the connector is connected with the storage module. The interface module comprises a debugging interface and a plurality of signal transmission interfaces. The radar signal acquisition circuit board solves the problems of high integration level, complex circuit, high production cost, high maintenance and detection cost and high requirement on engineer quality of a radar signal acquisition circuit board in the prior art, and has the characteristics of simple circuit, low wiring difficulty, easy installation and low maintenance cost.

Description

Technical Field

[0001] This invention relates to the field of reversing radar technology, specifically to a radar signal acquisition device. Background Technology

[0002] Millimeter-wave radar is widely used in the automotive field. With the popularization of intelligent driving, radar and cameras are the hardware facilities on which intelligent driving capabilities rely. The number and accuracy of radars are related to the accuracy of intelligent driving. When many manufacturers focus on increasing radar performance, they often ignore the degree of hardware integration, production and purchase costs, as well as the difficulty and cost of installation and maintenance. They often use a large number of high-performance radars, and the radar control board is integrated on a complete board. When it is damaged or there are quality control problems, the repair and testing costs are extremely high. Moreover, as the performance increases, the unit price of the product increases even faster, resulting in poor economic efficiency. Summary of the Invention

[0003] This invention proposes a radar signal acquisition device that solves the problems of high integration of radar signal acquisition circuit boards, complex circuits, high production costs, high maintenance and testing costs, and high requirements for engineers in the prior art. It features simple circuits, low wiring difficulty, easy installation, and low maintenance costs.

[0004] The technical solution of the present invention is as follows:

[0005] A radar signal acquisition device includes a main control module. The PD1-OSC_IN and PD1-OSC_OUT pins of the main control module are connected to a crystal oscillator module. The reset pin of the main control module is connected to a reset switch module. The main control module is connected to a debugging interface. The radar signal acquisition device also includes a voltage regulator module, a storage module, an isolating switch module, an alarm module, and an interface module. The input terminal of the voltage regulator module is connected to the main control module and an external voltage source. The storage module is connected to the main control module. The controlled terminal of the isolating switch module is connected to the PB15 pin of the main control module. The output of the isolating switch module is connected to a connector. The interface module includes a debugging interface and multiple signal transmission interfaces.

[0006] The working principle and beneficial effects of this invention are as follows:

[0007] This application consists of only one main control module, with supporting modules primarily for voltage regulation and storage. All interfaces are directly connected to the main control module, resulting in simple and easily detectable wiring. The alarm module is controlled by the main control module, which directly controls the transistor to control the buzzer's on / off state. Furthermore, the multiple serial ports facilitate the expansion of the data acquisition unit and its connection to radar systems, allowing for expansion even with multiple radars. Attached Figure Description

[0008] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0009] Figure 1 This is the circuit schematic diagram of the main control module in this application;

[0010] Figure 2 This is the circuit schematic of the voltage regulator module in this application;

[0011] Figure 3 This is the circuit schematic diagram of the alarm module in this application;

[0012] Figure 4 This is the circuit schematic of the crystal oscillator module in this application;

[0013] Figure 5 This is the circuit schematic of the reset fast-shutdown module in this application;

[0014] Figure 6 This is the circuit schematic diagram of the disconnect switch module in this application;

[0015] Figure 7 This is the circuit schematic for debugging the serial port in this application;

[0016] Figure 8 This is the circuit schematic of the storage module in this application;

[0017] Figure 9 The circuit schematic for the five serial ports in this application is shown below.

[0018] Figure 10 This is the circuit schematic of the prompt module in this application. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] As per the instruction manual Figure 1 , 4 As shown in Figure 5, a radar signal acquisition device includes a main control module. The PD1-OSC_IN and PD1-OSC_OUT pins of the main control module are connected to a crystal oscillator module. The reset pin of the main control module is connected to a reset switch module. The main control module signal is connected to a debugging interface. The radar signal acquisition device also includes a voltage regulator module, a storage module, an isolating switch module, an alarm module, and an interface module. The input terminal of the voltage regulator module is connected to the main control module and an external voltage source. The storage module signal is connected to the main control module. The controlled terminal of the isolating switch module is connected to the PB15 pin of the main control module. The output of the isolating switch module is connected to a connector. The interface module includes a debugging interface and multiple signal transmission interfaces.

[0021] As per the instruction manual Figure 2 As shown, it also includes an alarm module, which consists of a buzzer and a switching transistor Q4. The base of the switching transistor Q4 is connected to the main control module via resistor R22 as the input terminal of the alarm module. The buzzer is connected in series between the collector of the switching transistor Q4 and a 5V voltage source, and the collector of the switching transistor Q4 is grounded. When the main control unit BZ outputs a high potential, the switching transistor Q1 is turned on, and the buzzer is powered on. When the main control unit outputs a low potential, the switching transistor Q1 is turned off, and the buzzer is turned off.

[0022] A diode D1 is connected in parallel to the buzzer, pointing to a high potential. A resistor and capacitor are connected in parallel between the base of the switching transistor Q1 and the power supply ground. Diode D1 serves to drain current. Because the buzzer has a coil structure, it stores a large amount of current during operation. If the current cannot be released after power is cut off, it will damage the transistor Q1 and even the main control chip.

[0023] The power input of the voltage regulator module is connected to an external voltage source VDC, and the signal input of the voltage regulator module is connected to the PA0-WKUP pin of the main control module. The voltage regulator module includes chip U13 and voltage regulator U15. The VIN pin of chip U13 is connected in parallel to the voltage source VDC and the main control module. The voltage source VDC is connected to chip U13 through Zener diode D43, with Zener diode D43 pointing towards chip U13. The main control module is connected to chip U13 through resistors R131 and R130. The SW pin of chip U13 is connected to a 5V voltage source via inductor L1 and resistor R134. The CSP pin of chip U13 is connected to the series connection point of resistor R134 and inductor L1. The CSN pin of chip U13 is connected to the 5V voltage source. The 5V voltage source and the main control module are connected in parallel. Resistors R137 and R140 are connected in series between the power source and ground. The series connection point between resistors R137 and R140 is connected to chip U13. The 5V voltage source is connected to the IN pin of voltage regulator U15. The OUT pin of voltage regulator U15 serves as the 3.3V voltage source. Capacitor C67 is connected between the VIN pin and VC pin of chip U13. Electrolytic capacitor C57, diode D29, and capacitor C66 are connected in parallel between the VIN pin of chip U13 and the power supply ground. Capacitors C3, C72, and electrolytic capacitor C2 are connected in parallel between the 3.3V voltage source and the power supply ground.

[0024] As per the instruction manual Figure 9As shown, the interface module includes a debug interface J8 and five serial ports J2-J6. The debug interface and serial ports J2-J6 are connected to the main control module for communication. Debug interface J8 is connected to the PA14 and PA13 pins of the main control module; serial port J5 is connected to the PD2 and PC12 pins of the main control module; serial port J3 is connected to the PA10 and PA9 pins of the main control module; serial port J4 is connected to the PA2 and PA3 pins of the main control module; serial port J5 is connected to the PB10 and PB11 pins of the main control module; and serial port J6 is connected to the PC11 and PC10 pins of the main control module.

[0025] Serial port J5 can only be connected to the host computer or other data acquisition devices, while other serial ports can be connected to the radar.

[0026] As per the instruction manual Figure 6 As shown, the isolating switch module includes a transistor Q41, an optocoupler D59, and a MOSFET Q39. The base of transistor Q41, connected to resistor R288, serves as the input terminal of the isolating switch module. The collector of transistor Q41, connected to resistor R38, is connected to the negative terminal of the input terminal of optocoupler D59. The positive terminal of optocoupler D59 is connected to a 3.3V voltage source. The positive terminal of the output terminal of optocoupler D59 serves as the BREAK1+ output. The negative terminal of the output terminal of optocoupler D59 is connected to the gate of MOSFET Q9. The drain of MOSFET Q9 is connected to the optocoupler D59. The positive terminal of the output of optocoupler D59 is connected to diode D20, and diode D20 points to the positive terminal of the output of optocoupler D59. The series connection point between MOSFET Q9 and diode D20 serves as the BREAK2- output, and the source of MOSFET Q9 serves as the BR1_COM output. The output of the isolating switch module is connected to connector CN2. Connector C2 can be connected to the host computer. When a fault occurs, a command will be sent through DO1, which will be transmitted to the host computer through the isolating switch module and then notified to the user through the instrument panel and other devices.

[0027] When an object approaches the car, the entire radar signal acquisition system starts working. At this time, the radar board sends a PWM signal to the serial port via AON3. The serial port then sends the information to the main controller for processing, and then feeds it back to the buzzer, which starts emitting an alarm signal. As the object gets closer to the car body, the frequency of the buzzer alarm will increase.

[0028] The key lies in the centimeter-level distance detection of the high-precision 24-79GHz band millimeter-wave radar, and the integration of the collected radar early warning signals to provide feedback and early warning.

[0029] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A radar signal acquisition device, comprising a main control module, characterized in that, The PD1-OSC_IN and PD1-OSC_OUT pins of the main control module are connected to the crystal oscillator module. The reset pin of the main control module is connected to the reset switch module. The main control module signal is connected to the debugging interface. The radar signal acquisition device also includes a voltage regulator module, a storage module, an isolating switch module, an alarm module, and an interface module. The input terminal of the voltage regulator module is connected to the main control module and an external voltage source. The storage module signal is connected to the main control module. The controlled terminal of the isolating switch module is connected to the PB15 pin of the main control module. The output of the isolating switch module is connected to a connector. The interface module includes a debugging interface and multiple signal transmission interfaces.

2. The radar signal acquisition device according to claim 1, characterized in that, It also includes an alarm module, which includes a buzzer and a switching transistor Q4. The base of the switching transistor Q4 is connected to the main control module via a resistor R22 as the input terminal of the alarm module. The buzzer is connected in series between the collector of the switching transistor Q4 and a 5V voltage source. The collector of the switching transistor Q4 is grounded.

3. A radar signal acquisition device according to claim 2, characterized in that, The buzzer is connected in parallel with a diode D1, which points to a high potential. A resistor and a capacitor are connected in parallel between the base of the switching transistor Q1 and the power supply ground.

4. A radar signal acquisition device according to claim 1, characterized in that, The power input of the voltage regulator module is connected to an external voltage source VDC, and the signal input of the voltage regulator module is connected to the PA0-WKUP pin of the main control module.

5. A radar signal acquisition device according to claim 4, characterized in that, The voltage regulator module includes a chip U13 and a voltage regulator U15. The VIN pin of the chip U13 is connected in parallel to a voltage source VDC and a main control module. The voltage source VDC is connected to the chip U13 via a Zener diode D43, which points towards the chip U13. The main control module is connected to the chip U13 via resistors R131 and R130. The SW pin of the chip U13 is connected to a 5V voltage source via an inductor L1 and a resistor R134. The CSP pin of the chip U13 is connected to the series connection point of the resistor R134 and the inductor L1. The CSN pin of the chip U13 is connected to the 5V voltage source. A resistor R137 and a resistor R140 are connected in series between the 5V voltage source and the power ground. The series connection point between the resistors R137 and R140 is connected to the chip U13. The 5V voltage source is connected to the IN pin of the voltage regulator U15. The OUT pin of the voltage regulator U15 serves as a 3.3V voltage source.

6. A radar signal acquisition device according to claim 5, characterized in that, A capacitor C67 is connected between the VIN pin and the VC pin of the chip U13. An electrolytic capacitor C57, a diode D29, and a capacitor C66 are connected in parallel between the VIN pin of the chip U13 and the power ground. A capacitor C3, a capacitor C72, and an electrolytic capacitor C2 are connected in parallel between the 3.3V voltage source and the power ground.

7. A radar signal acquisition device according to claim 1, characterized in that, The interface module includes a debugging interface J8 and five serial ports J2-J6, which are respectively connected to the main control module for communication.

8. A radar signal acquisition device according to claim 7, characterized in that, The debugging interface J8 is connected to the PA14 and PA13 pins of the main control module; the serial port J5 is connected to the PD2 and PC12 pins of the main control module; the serial port J3 is connected to the PA10 and PA9 pins of the main control module; the serial port J4 is connected to the PA2 and PA3 pins of the main control module; the serial port J5 is connected to the PB10 and PB11 pins of the main control module; and the serial port J6 is connected to the PC11 and PC10 pins of the main control module.

9. A radar signal acquisition device according to claim 8, characterized in that, The isolating switch module includes a transistor Q41, an optocoupler D59, and a MOSFET Q39. The base of transistor Q41 and a resistor R288 serve as the input terminal of the isolating switch module. The collector of transistor Q41 is connected to the negative terminal of the input terminal of optocoupler D59 via a resistor R38. The positive terminal of optocoupler D59 is connected to a 3.3V voltage source. The positive terminal of the output terminal of optocoupler D59 serves as the BREAK1+ output. The negative terminal of the output terminal of optocoupler D59 is connected to the gate of MOSFET Q9. The drain of MOSFET Q9 and the positive terminal of the output terminal of optocoupler D59 are connected to diode D20, with diode D20 pointing towards the positive terminal of the output terminal of optocoupler D59. The series connection point between MOSFET Q9 and diode D20 serves as the BREAK2- output. The source of MOSFET Q9 serves as the BR1_COM output. The output of the isolating switch module is connected to connector CN2.

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