Automobile data recorder control system and automobile data recorder
By using electromagnetic wave signals of different frequency bands in the dash recorder to detect different areas of the vehicle, the problems of high power consumption and false alarms in the prior art are solved, and the effect of accurate vehicle monitoring and power consumption is achieved.
Patent Information
- Application Number
- CN202421224000.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-05-31
AI Technical Summary
The existing dash recorder consumes high power and is prone to false alarms after the vehicle is stopped.
The first radar module and the second radar module are used to detect different areas of the vehicle, and electromagnetic wave signals of different frequency bands are used to avoid mutual interference, accurately configure the front and rear detection ranges, and reduce power consumption.
It effectively avoids mis-detection and missed detection, reduces overall power consumption, and improves detection accuracy.
Smart Images
Figure CN222337675U_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the technical field of electronic circuits, and in particular, relates to a driving recorder control system and a driving recorder. Background Art
[0002] The installation of driving recorders in vehicles is becoming more and more popular. After the vehicle is started, it can record the surrounding conditions of the vehicle for protection purposes. After the vehicle stops, the driving recorder will be powered off to avoid long-term use of the power of the car's starting battery, which may cause vehicle failures. Therefore, the driving recorder function is forced to shut down during the stop period, and the vehicle cannot be monitored during the shutdown period.
[0003] In order to monitor the vehicle after it stops, the dashcams on the market generally use single-band radar or non-fixed-frequency radar to monitor and wake up the dashcam. However, in order to detect the front and rear areas of the car, the radar sensitivity must be improved, which not only consumes a lot of power but also easily leads to false alarms. Therefore, the present application provides a dashcam control system to solve the problems of high power consumption and false alarms in the current detection method of dashcams. Utility Model Content
[0004] The purpose of the present application is to provide a driving recorder control system, aiming to solve the problems of high power consumption and easy false alarm of traditional driving recorders after the vehicle stops.
[0005] A first aspect of an embodiment of the present application provides a driving recorder control system, which is used for a driving recorder, and includes:
[0006] The first radar module is configured to, when powered on, send out a first electromagnetic wave signal to detect a first area of the vehicle, receive a second electromagnetic wave signal, and send out a first control signal when the second electromagnetic wave signal meets a first preset condition;
[0007] a second radar module configured to, when powered on, emit a third electromagnetic wave signal to detect a second area of the vehicle, receive a fourth electromagnetic wave signal, and emit a second control signal when the second electromagnetic wave signal satisfies a first preset condition; and
[0008] a main control module, electrically connected to the first radar module and the second radar module, and configured to output a first working voltage when powered on and receiving the first control signal or the second control signal, so that the driving recorder is powered on and works according to the first working voltage;
[0009] Among them, the first electromagnetic wave signal and the second electromagnetic wave signal are electromagnetic waves of the first frequency band; the third electromagnetic wave signal and the fourth electromagnetic wave signal are electromagnetic waves of the second frequency band; the first frequency band electromagnetic wave and the second frequency band electromagnetic wave are electromagnetic waves of different frequency bands.
[0010] One optional implementation further includes:
[0011] a power supply detection module, used for detecting a second operating voltage inputted into the driving recorder by the vehicle, and sending a third control signal when the second operating voltage is at a low level; and
[0012] a power supply control module, electrically connected to the power supply detection module, the main control module, the first radar module and the second radar module, and outputting a third operating voltage to the first radar module and a fourth operating voltage to the second radar module according to the third control signal;
[0013] The main control module, the first radar module and the second radar module are powered on and operate according to the third operating voltage.
[0014] One optional implementation further includes:
[0015] a first indication module, electrically connected to the main control module and configured to light up according to the fourth control signal;
[0016] a second indication module, electrically connected to the main control module and configured to light up according to the fifth control signal;
[0017] The main control module is further configured to output the fourth control signal according to the first control signal, and to output the fifth control signal according to the second control signal.
[0018] In one optional implementation manner, the power supply control module includes: a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first transistor, a second transistor, a first field effect transistor, a first capacitor, a second capacitor, a third capacitor, a first voltage stabilizer and a second voltage stabilizer;
[0019] The first end of the first resistor, the first end of the second resistor, the first end of the third resistor and the source of the first field effect transistor are connected together and are used to input the third control signal. The first end of the fourth resistor is the power input end of the power supply control module. The second end of the first resistor, the first end of the first capacitor, the drain of the first field effect transistor, the input end of the first regulator and the input end of the second regulator are connected together. The second end of the second resistor, the gate of the first field effect transistor and the collector of the second transistor are connected together. The second end of the third resistor, the collector of the first transistor and the base of the second transistor are connected together. The second end of the resistor, the first end of the fifth resistor and the base of the first transistor are connected together, the second end of the fifth resistor, the emitter of the first transistor and the emitter of the second transistor are connected together and connected to the power ground, the output end of the first voltage regulator and the first end of the second capacitor are connected together and used to output the third working voltage, the second end of the first capacitor, the ground terminal of the first voltage regulator and the second end of the second capacitor are connected together and connected to the power ground, the output end of the second voltage regulator and the first end of the third capacitor are connected together and used to output the fourth working voltage, the ground terminal of the second voltage regulator and the second end of the third capacitor are connected together and connected to the power ground.
[0020] In one optional implementation manner, the power supply detection module includes a fourth capacitor, a fifth capacitor and a switch unit;
[0021] Pin 2 of the switch unit is used to input the working voltage, pin 7 of the switch unit is used to input the second working voltage, pin 3 of the switch unit, pin 4 of the switch unit, the first end of the fourth capacitor and the first end of the fifth capacitor are connected in common and used to output the third control signal, and pin 6 of the switch unit, the second end of the fourth capacitor and the second end of the fifth capacitor are all connected to the power ground.
[0022] In one optional implementation manner, the first indication module includes a first light emitting diode and a sixth resistor, and the second indication module includes a second light emitting diode and a seventh resistor;
[0023] The first end of the sixth resistor is used to input the fourth control signal, the first end of the seventh resistor is used to input the fifth control signal, the second end of the sixth resistor is connected to the anode of the first light-emitting diode, the second end of the seventh resistor is connected to the anode of the second light-emitting diode, and the cathode of the first light-emitting diode and the cathode of the second light-emitting diode are connected in common and to the power ground.
[0024] In one optional implementation manner, the first radar module includes an eighth resistor, an eleventh resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a twenty-first resistor, a twenty-second resistor, a twenty-third resistor, a seventh capacitor, a tenth capacitor, an eleventh capacitor, a thirteenth capacitor, a fifteenth capacitor, a seventeenth capacitor, a nineteenth capacitor, a twenty-second capacitor and a first radar chip;
[0025] Pin 1 of the first radar chip is connected to the first end of the nineteenth resistor, pin 2 of the first radar chip is connected to the first end of the twentieth resistor, pin 3 of the first radar chip is connected to the first end of the twenty-first resistor, pin 4 of the first radar chip is connected to the first end of the twenty-second resistor, pin 5 of the first radar chip is connected to the first end of the twenty-third resistor, pin 6 of the first radar chip is used to input the second electromagnetic wave signal with the first antenna, pin 7 of the first radar chip, the first end of the twenty-second capacitor and the first end of the fifteenth resistor are connected in common, pin 8 of the first radar chip, the first end of the nineteenth capacitor and the first end of the fourteenth resistor are connected in common, pin 9 of the first radar chip is connected to the first end of the fifteenth capacitor, pin 10 of the first radar chip is connected to the first end of the thirteenth capacitor, pin 11 of the first radar chip is connected to the first end of the tenth capacitor, pin 12 of the first radar chip, the first end of the seventh capacitor and the first end of the eighth resistor are connected in common, pin 13 of the first radar chip is connected to the first end of the eleventh resistor, pin 14 of the first radar chip is connected to the second end of the eleventh resistor, pin 15 of the first radar chip, the first end of the eleventh capacitor The first end of the first radar chip is connected and used as a test point, the 16th pin of the first radar chip is connected to the first end of the thirteenth resistor, the 17th pin of the first radar chip is connected to the first end of the seventeenth resistor, the 18th pin of the first radar chip is connected to the first end of the eighteenth resistor, the 19th pin of the first radar chip and the 21st pin of the first radar chip are both connected to the power ground, the 10th pin of the first radar chip is used to output the first electromagnetic wave signal, the second end of the nineteenth resistor, the second end of the twentieth resistor, the second end of the twenty-first resistor, the second end of the twenty-second resistor, the second end of the twenty-third resistor, the The second end of the nineteenth capacitor, the second end of the twenty-second capacitor, the second end of the seventh capacitor, the second end of the tenth capacitor and the second end of the eleventh capacitor are all connected to the power ground, the second end of the fifteenth capacitor, the second end of the fourteenth resistor and the first end of the seventeenth capacitor are connected in common, the second end of the thirteenth capacitor, the second end of the seventeenth capacitor and the second end of the fifteenth resistor are connected in common, the second end of the eighth resistor is used to input the third operating voltage, the second end of the thirteenth resistor is used to output the first control signal, and the second end of the seventeenth resistor and the second end of the eighteenth resistor are used to communicate with the main control module.
[0026] In one optional implementation manner, the second radar module includes a ninth resistor, a tenth resistor, a twelfth resistor, a sixteenth resistor, a twenty-fourth resistor, a twenty-fifth resistor, a twenty-sixth resistor, a twenty-seventh resistor, a sixth capacitor, an eighth capacitor, a ninth capacitor, a twelfth capacitor, a fourteenth capacitor, a sixteenth capacitor, an eighteenth capacitor, a twentieth capacitor, a twenty-first capacitor, a twenty-third capacitor, a first inductor, and a second radar chip;
[0027] Pin 1 of the second radar chip is connected to the first end of the twenty-fourth resistor, pin 2 of the second radar chip is connected to the first end of the twenty-fifth resistor, pin 3 of the second radar chip is connected to the power ground, pin 4 of the second radar chip is connected to the first end of the twenty-sixth resistor, pin 5 of the second radar chip is connected to the first end of the twenty-seventh resistor, pin 6 of the second radar chip is connected to the first end of the twenty-third capacitor, pin 7 of the second radar chip, the first end of the twenty-first capacitor and the first end of the sixteenth resistor are connected in common, pin 8 of the second radar chip, the first end of the eighteenth capacitor and the first end of the twelfth resistor are connected in common, pin 9 of the second radar chip is connected to the first end of the fourteenth capacitor, pin 10 of the second radar chip is connected to the first end of the twelfth capacitor, pin 11 of the second radar chip is connected to the first end of the ninth capacitor, pin 12 of the second radar chip is connected to the first end of the sixth capacitor and is used to input the fourth working voltage, pin 13 of the second radar chip is unconnected, pin 14 of the second radar chip, the first end of the eighth capacitor and the first end of the tenth resistor are connected in common, pin 15 of the second radar chip is connected to the first end of the The first end of the ninth resistor is connected, the 16th pin of the second radar chip and the 17th pin of the second radar chip are used to communicate with the main control module, the 18th pin of the second radar chip and the 21st pin of the second radar chip are both connected to the power ground, the 19th pin of the second radar chip, the first end of the 20th capacitor and the first end of the first inductor are connected in common, the 20th pin of the second radar chip and the second end of the 24th resistor, the second end of the 25th resistor, the second end of the 26th resistor, the second end of the 27th resistor, the second end of the 18th capacitor, the second end of the 21st capacitor, the second end of the 6th capacitor, the second end of the 9th capacitor, the second end of the 8th capacitor and the second end of the first inductor are all connected to the power ground, the second end of the 23rd capacitor is used to input the fourth electromagnetic wave signal, the second end of the 16th resistor, the second end of the 12th capacitor, and the first end of the 16th capacitor are connected in common, the second end of the 12th resistor, the second end of the 14th capacitor and the second end of the 16th capacitor are connected in common, the second end of the 9th resistor and the second end of the 10th resistor are connected and used to output the second control signal, and the second end of the 20th capacitor is used to output the third electromagnetic wave signal.
[0028] In one optional implementation manner, the main control module includes a main control chip, pin 8 of the main control chip and pin 9 of the main control chip are used to communicate with the first radar module and the second radar module, pin 10 of the main control chip is used to input the second control signal, pin 11 of the main control chip is used to input the first control signal, pin 12 of the main control chip is used to output a fourth control signal, pin 13 of the main control chip is used to output a fifth control signal, pin 14 of the main control chip is used to input the second operating voltage, pin 16 of the main control chip is used to output the first operating voltage, and pin 16 of the main control chip is connected to the power ground.
[0029] A second aspect of an embodiment of the present application provides a driving recorder, comprising a driving recorder control system as described in any one of the above items.
[0030] Compared with the prior art, the beneficial effects of the embodiments of the utility model are as follows: the scheme detects different areas of the vehicle by using the first radar module and the second radar module, and the first electromagnetic wave signal emitted by the first radar module and the second electromagnetic wave signal received and the third electromagnetic wave signal emitted by the second radar module and the fourth electromagnetic wave signal received are electromagnetic waves of different frequency bands, thereby effectively avoiding mutual interference between the first radar module and the second radar module, so the front and rear detection ranges of the vehicle can be accurately configured to avoid false detection and missed detection, and therefore there is no need to increase the sensitivity of the radar, thereby reducing the overall power consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0031] Figure 1 A first exemplary principle block diagram of a driving recorder control system provided in an embodiment of the present application;
[0032] Figure 2 A second exemplary principle block diagram of a driving recorder control system provided in an embodiment of the present application;
[0033] Figure 3 An example circuit schematic diagram of a power supply control module provided in an embodiment of the present application;
[0034] Figure 4 An example circuit diagram of a power supply detection module provided in an embodiment of the present application;
[0035] Figure 5 An exemplary circuit schematic diagram of a first indication module and a second indication module provided in an embodiment of the present application;
[0036] Figure 6 An exemplary circuit schematic diagram of a first radar module provided in an embodiment of the present application;
[0037] Figure 7An exemplary circuit schematic diagram of a second radar module provided in an embodiment of the present application;
[0038] Figure 8 An example circuit schematic diagram of a main control module provided in an embodiment of the present application;
[0039] Fig. 9 An example circuit schematic diagram provided for an embodiment of the present application. DETAILED DESCRIPTION
[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.
[0041] Figure 1 A first exemplary principle block diagram of a driving recorder control system provided in an embodiment of the present application is shown. For ease of explanation, only the parts related to the present embodiment are shown, which are described in detail as follows:
[0042] A driving recorder control system is used for a driving recorder 200 , and includes a first radar module 110 , a second radar module 120 and a main control module 130 .
[0043] The first radar module 110 is configured to, when powered on, send out a first electromagnetic wave signal to detect a first area of the vehicle, receive a second electromagnetic wave signal, and send out a first control signal when the second electromagnetic wave signal meets a first preset condition.
[0044] The second radar module 120 is configured to, when powered on, send out a third electromagnetic wave signal to detect a second area of the vehicle, receive a fourth electromagnetic wave signal, and send out a second control signal when the second electromagnetic wave signal meets a first preset condition.
[0045] The main control module 130 is electrically connected to the first radar module 110 and the second radar module 120, and is configured to output a first operating voltage when powered on and when receiving the first control signal or the second control signal, so that the driving recorder 200 is powered on and operates according to the first operating voltage.
[0046] The first electromagnetic wave signal and the second electromagnetic wave signal are electromagnetic waves of the first frequency band; the third electromagnetic wave signal and the fourth electromagnetic wave signal are electromagnetic waves of the second frequency band; the first frequency band electromagnetic wave and the second frequency band electromagnetic wave are electromagnetic waves of different frequency bands. The first area of the vehicle may be the front area of the vehicle, the second area of the vehicle may be the rear area of the vehicle, and the front area and the rear area of the vehicle together can cover the surrounding area within a certain range of the vehicle; the first prediction condition may be the appearance of the detection target in the first area, and the second prediction condition may be the appearance of the detection target in the second area.
[0047] In this embodiment, when the vehicle stops working, the driving recorder 200 also stops working. At this time, the first radar module 110 and the second radar module 120 start to power on; the first radar module 110 sends a first electromagnetic wave signal to monitor the first area of the vehicle, and receives a second electromagnetic wave signal emitted after the first electromagnetic wave signal contacts an object. When the second electromagnetic wave signal meets the first preset condition, it is determined that there is a detection target in the first area. At this time, the first radar module 110 sends a first control signal to the main control module 130; the second radar module 120 sends a third electromagnetic wave signal to monitor the second area of the vehicle, and receives a fourth electromagnetic wave signal emitted after the third electromagnetic wave signal contacts an object. When the fourth electromagnetic wave signal meets the second preset condition, it is determined that there is a detection target in the second area. At this time, the second radar module 120 sends a second control signal to the main control module 130; when the main control module 130 receives the first control signal or the second control signal, it outputs a first working voltage to the driving recorder 200, so that the driving recorder 200 is powered on to monitor the surroundings of the vehicle until both the first control signal and the second control signal stop being input. Because the first radar module 110 and the second radar module 120 are used to detect different areas of the vehicle, and the first electromagnetic wave signal emitted and the second electromagnetic wave signal received by the first radar module 110 and the third electromagnetic wave signal emitted and the fourth electromagnetic wave signal received by the second radar module 120 are electromagnetic waves of different frequency bands, mutual interference between the first radar module 110 and the second radar module 120 is effectively avoided, so the front and rear detection ranges of the vehicle can be accurately configured to avoid false detection and missed detection, and therefore there is no need to increase the sensitivity of the radar, thereby reducing overall power consumption.
[0048] Among them, when powered on, the first radar module 110 and the second radar module 120 both work in a pulse working mode, with very low power consumption, generally less than 2mA; and the first radar module 110 and the second radar module 120 respectively operate and control the main control module 130 to turn on the driving recorder 200.
[0049] like Figure 2 As shown, in one optional implementation manner, the driving recorder control system further includes:
[0050] a power supply detection module 140, configured to detect a second operating voltage inputted by the vehicle into the driving recorder 200, and to send a third control signal when the second operating voltage is at a low level; and
[0051] a power supply control module 150, which is electrically connected to the power supply detection module 140, the main control module 130, the first radar module 110 and the second radar module 120, and outputs a third operating voltage to the first radar module 110 and a fourth operating voltage to the second radar module 120 according to the third control signal;
[0052] The main control module 130 , the first radar module 110 , and the second radar module 120 are powered on and operate according to the third operating voltage.
[0053] In this embodiment, when the vehicle stops inputting the second working voltage to the driving recorder 200, the power supply detection module 140 sends a third control signal to the power supply control module 150, and the power supply control module 150 outputs the third working voltage and the fourth working voltage to the first radar module 110 and the second radar module 120 according to the third control signal to power them on.
[0054] In one optional implementation, the driving recorder control system further includes:
[0055] A first indication module, electrically connected to the main control module 130, configured to light up according to the fourth control signal;
[0056] a second indication module, electrically connected to the main control module 130 and configured to light up according to the fifth control signal;
[0057] The main control module 130 is further configured to output the fourth control signal according to the first control signal, and output the fifth control signal according to the second control signal.
[0058] Combination Figure 3-Figure 9 As shown, in one optional implementation, the power supply control module 150 includes: a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first transistor BT1, a second transistor BT2, a first field effect transistor Q1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first regulator U1 and a second regulator U3;
[0059] The first end of the first resistor R1, the first end of the second resistor R2, the first end of the third resistor R3 and the source of the first field effect transistor Q1 are connected in common and are used to input the third control signal. The first end of the fourth resistor R4 is the power input end of the power supply control module 150. The second end of the first resistor R1, the first end of the first capacitor C1, the drain of the first field effect transistor Q1, the input end of the first regulator U1 and the input end of the second regulator U3 are connected in common. The second end of the second resistor R2, the gate of the first field effect transistor Q1 and the collector of the second transistor BT2 are connected in common. The second end of the third resistor R3, the collector of the first transistor BT1 and the base of the second transistor BT2 are connected in common. The second end of the four resistors R4, the first end of the fifth resistor R5 and the base of the first transistor BT1 are connected in common, the second end of the fifth resistor R5, the emitter of the first transistor BT1 and the emitter of the second transistor BT2 are connected in common and connected to the power ground, the output end of the first voltage regulator U1 and the first end of the second capacitor C2 are connected in common and used to output the third working voltage, the second end of the first capacitor C1, the ground end of the first voltage regulator U1 and the second end of the second capacitor C2 are connected in common and connected to the power ground, the output end of the second voltage regulator U3 and the first end of the third capacitor C3 are connected in common and used to output the fourth working voltage, the ground end of the second voltage regulator U3 and the second end of the third capacitor C3 are connected in common and connected to the power ground.
[0060] After the input power is divided by the fourth resistor R4 and the fifth resistor R5, it is connected to the base of the first transistor BT1. The emitter of the first transistor BT1 is grounded, and the collector of the first transistor BT1 is connected to the base of the second transistor BT2. The third resistor R3 is connected to the collector of the first transistor BT1 and the base of the second transistor BT2 at the same time, providing a driving current for the second transistor BT2. The first transistor BT1 realizes the switching state of the second transistor BT2 by controlling the current of the base of the second transistor BT2. The emitter of the second transistor BT2 is grounded, and the collector of the second transistor BT2 is connected to the gate of the first field effect transistor Q1 and the second resistor R2. The switching state of the second transistor BT2 can be used to control the switching of the on and off states of the first field effect transistor Q1 synchronously. The drain of the first field effect transistor Q1 is connected to the first capacitor C1, and the first capacitor C1 can filter the power supply.
[0061] In one optional implementation, the power supply detection module 140 includes a fourth capacitor C4, a fifth capacitor C5 and a switch unit;
[0062] Pin 2 of the switch unit is used to input the working voltage, pin 7 of the switch unit is used to input the second working voltage, pin 3 of the switch unit, pin 4 of the switch unit, the first end of the fourth capacitor C4, and the first end of the fifth capacitor C5 are connected in common and used to output the third control signal, and pin 6 of the switch unit, the second end of the fourth capacitor C4, and the second end of the fifth capacitor C5 are all connected to the power ground.
[0063] The switch unit has three states: off, long-distance detection mode, and short-distance detection mode; when the second operating voltage input to pin 7 of the switch unit is at a low level (0V), the switch unit enters the long-distance detection mode and outputs a third control signal.
[0064] In one optional implementation, the first indication module includes a first light emitting diode ZD1 and a sixth resistor R6, and the second indication module includes a second light emitting diode ZD2 and a seventh resistor R7;
[0065] The first end of the sixth resistor R6 is used to input the fourth control signal, the first end of the seventh resistor R7 is used to input the fifth control signal, the second end of the sixth resistor R6 is connected to the anode of the first light-emitting diode ZD1, the second end of the seventh resistor R7 is connected to the anode of the second light-emitting diode ZD2, the cathode of the first light-emitting diode ZD1 and the cathode of the second light-emitting diode ZD2 are connected in common and to the power ground.
[0066] In one optional embodiment, the first radar module 110 includes an eighth resistor R8, an eleventh resistor R11, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a seventeenth resistor R17, an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a seventh capacitor C7, a tenth capacitor C10, an eleventh capacitor C11, a thirteenth capacitor C13, a fifteenth capacitor C15, a seventeenth capacitor C17, a nineteenth capacitor C19, a twenty-second capacitor C22 and a first radar chip U5;
[0067] Pin 1 of the first radar chip U5 is connected to the first end of the nineteenth resistor R19, pin 2 of the first radar chip U5 is connected to the first end of the twentieth resistor R20, pin 3 of the first radar chip U5 is connected to the first end of the twenty-first resistor R21, pin 4 of the first radar chip U5 is connected to the first end of the twenty-second resistor R22, pin 5 of the first radar chip U5 is connected to the first end of the twenty-third resistor R23, pin 6 of the first radar chip U5 is used to input the second electromagnetic wave signal to the first antenna, pin 7 of the first radar chip U5, the first end of the twenty-second capacitor C22 and the first end of the fifteenth resistor R15 are connected in common, The 8th pin of the first radar chip U5, the first end of the 19th capacitor C19 and the first end of the 14th resistor R14 are connected in common, the 9th pin of the first radar chip U5 is connected to the first end of the 15th capacitor C15, the 10th pin of the first radar chip U5 is connected to the first end of the 13th capacitor C13, the 11th pin of the first radar chip U5 is connected to the first end of the 10th capacitor C10, the 12th pin of the first radar chip U5, the first end of the 7th capacitor C7 and the first end of the 8th resistor R8 are connected in common, the 13th pin of the first radar chip U5 is connected to the first end of the 11th resistor R11, the 14th pin of the first radar chip U5 is connected to the first end of the 11th resistor R1 1 is connected to the second end of the first radar chip U5, the 15th pin of the first radar chip U5 and the first end of the eleventh capacitor C11 are connected and used as a test point, the 16th pin of the first radar chip U5 and the first end of the thirteenth resistor R13 are connected, the 17th pin of the first radar chip U5 is connected to the first end of the seventeenth resistor R17, the 18th pin of the first radar chip U5 is connected to the first end of the eighteenth resistor R18, the 19th pin of the first radar chip U5 and the 21st pin of the first radar chip U5 are both connected to the power ground, the 10th pin of the first radar chip U5 is used to output the first electromagnetic wave signal, the second end of the nineteenth resistor R19, the second end of the twentieth resistor R20, the The second end of the twenty-first resistor R21, the second end of the twenty-second resistor R22, the second end of the twenty-third resistor R23, the second end of the nineteenth capacitor C19, the second end of the twenty-second capacitor C22, the second end of the seventh capacitor C7, the second end of the tenth capacitor C10 and the second end of the eleventh capacitor C11 are all connected to the power ground, the second end of the fifteenth capacitor C15, the second end of the fourteenth resistor R14 and the first end of the seventeenth capacitor C17 are connected in common, the second end of the thirteenth capacitor C13, the second end of the seventeenth capacitor C17 and the second end of the fifteenth resistor R15 are connected in common, and the second end of the eighth resistor R8 is used to input the third working voltage.The second end of the thirteenth resistor R13 is used to output the first control signal, and the second end of the seventeenth resistor R17 and the second end of the eighteenth resistor R18 are used to communicate with the main control module 130.
[0068] In one optional embodiment, the second radar module 120 includes a ninth resistor R9, a tenth resistor R10, a twelfth resistor R12, a sixteenth resistor R16, a twenty-fourth resistor R24, a twenty-fifth resistor R25, a twenty-sixth resistor R26, a twenty-seventh resistor R27, a sixth capacitor C6, an eighth capacitor C8, a ninth capacitor C9, a twelfth capacitor C12, a fourteenth capacitor C14, a sixteenth capacitor C16, an eighteenth capacitor C18, a twentieth capacitor C20, a twenty-first capacitor C21, a twenty-third capacitor C23, a first inductor L1 and a second radar chip U4;
[0069] Pin 1 of the second radar chip U4 is connected to the first end of the twenty-fourth resistor R24, pin 2 of the second radar chip U4 is connected to the first end of the twenty-fifth resistor R25, pin 3 of the second radar chip U4 is connected to the power ground, pin 4 of the second radar chip U4 is connected to the first end of the twenty-sixth resistor R26, pin 5 of the second radar chip U4 is connected to the first end of the twenty-seventh resistor R27, pin 6 of the second radar chip U4 is connected to the first end of the twenty-third capacitor C23, pin 7 of the second radar chip U4, the first end of the twenty-first capacitor C21 and the first end of the sixteenth resistor R16 are connected in common, and pin 8 of the second radar chip U4 is connected to the first end of the twenty-third capacitor C23. The 8th pin of the second radar chip U4, the first end of the eighteenth capacitor C18 and the first end of the twelfth resistor R12 are connected in common, the 9th pin of the second radar chip U4 is connected to the first end of the fourteenth capacitor C14, the 10th pin of the second radar chip U4 is connected to the first end of the twelfth capacitor C12, the 11th pin of the second radar chip U4 is connected to the first end of the ninth capacitor C9, the 12th pin of the second radar chip U4 is connected to the first end of the sixth capacitor C6 and is used to input the fourth operating voltage, the 13th pin of the second radar chip U4 is unconnected, the 14th pin of the second radar chip U4, the first end of the eighth capacitor C8 and the first end of the tenth resistor R10 are connected in common, and the second radar Pin 15 of the chip U4 is connected to the first end of the ninth resistor R9, pin 16 of the second radar chip U4 and pin 17 of the second radar chip U4 are used to communicate with the main control module 130, pin 18 of the second radar chip U4 and pin 21 of the second radar chip U4 are both connected to the power ground, pin 19 of the second radar chip U4, the first end of the twentieth capacitor C20 and the first end of the first inductor L1 are connected in common, pin 20 of the second radar chip U4 is connected to the second end of the twenty-fourth resistor R24, the second end of the twenty-fifth resistor R25, the second end of the twenty-sixth resistor R26, the second end of the twenty-seventh resistor R27, the eighteenth capacitor C18 The second end of the 21st capacitor C21, the second end of the 6th capacitor C6, the second end of the 9th capacitor C9, the second end of the 8th capacitor C8 and the second end of the first inductor L1 are all connected to the power ground, the second end of the 23rd capacitor C23 is used to input the fourth electromagnetic wave signal, the second end of the 16th resistor R16, the second end of the 12th capacitor C12, and the first end of the 16th capacitor C16 are connected in common, the second end of the 12th resistor R12, the second end of the 14th capacitor C14 and the second end of the 16th capacitor C16 are connected in common, the second end of the 9th resistor R9 and the second end of the 10th resistor R10 are connected and used to output the second control signal,The second end of the 20th capacitor C20 is used to output the third electromagnetic wave signal.
[0070] In one optional implementation manner, the main control module 130 includes a main control chip U2, pin 8 of the main control chip U2 and pin 9 of the main control chip U2 are used to communicate with the first radar module 110 and the second radar module 120, pin 10 of the main control chip U2 is used to input the second control signal, pin 11 of the main control chip U2 is used to input the first control signal, pin 12 of the main control chip U2 is used to output a fourth control signal, pin 13 of the main control chip U2 is used to output a fifth control signal, pin 14 of the main control chip U2 is used to input the second operating voltage, pin 16 of the main control chip U2 is used to output the first operating voltage, and pin 16 of the main control chip U2 is connected to the power ground.
[0071] In one optional embodiment, it also includes a cable plug P1, which is connected to the driving recorder 200, pin 1 of the cable plug P1 is a vehicle start status flag signal, pin 2 of the cable plug P1 is connected to the power ground, pin 3 of the cable plug P1 is a second working voltage input port of the vehicle, pin 4 of the cable plug P1 is connected to the cathode of the first diode D1, and the anode of the second diode is used to input the first working voltage and transfer it to the driving recorder 200.
[0072] A second aspect of an embodiment of the present application provides a driving recorder, comprising a driving recorder control system as described in any one of the above items.
[0073] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.
Claims
1. A driving recorder control system, used for a driving recorder, characterized in that: include: The first radar module is configured to, when powered on, send out a first electromagnetic wave signal to detect a first area of the vehicle, receive a second electromagnetic wave signal, and send out a first control signal when the second electromagnetic wave signal meets a first preset condition; The second radar module is configured to, when powered on, send out a third electromagnetic wave signal to detect a second area of the vehicle, receive a fourth electromagnetic wave signal, and send out a second control signal when the second electromagnetic wave signal meets a first preset condition; as well as a main control module, electrically connected to the first radar module and the second radar module, and configured to output a first working voltage when powered on and receiving the first control signal or the second control signal, so that the driving recorder is powered on and works according to the first working voltage; Among them, the first electromagnetic wave signal and the second electromagnetic wave signal are electromagnetic waves of the first frequency band; the third electromagnetic wave signal and the fourth electromagnetic wave signal are electromagnetic waves of the second frequency band; the first frequency band electromagnetic wave and the second frequency band electromagnetic wave are electromagnetic waves of different frequency bands.
2. The driving recorder control system according to claim 1, characterized in that: Also includes: A power supply detection module, used for detecting a second working voltage inputted into the driving recorder by the vehicle, and sending a third control signal when the second working voltage is at a low level; as well as a power supply control module, electrically connected to the power supply detection module, the main control module, the first radar module and the second radar module, and outputting a third operating voltage to the first radar module and a fourth operating voltage to the second radar module according to the third control signal; The main control module, the first radar module and the second radar module are powered on and operate according to the third operating voltage.
3. The driving recorder control system according to claim 1, characterized in that: Also includes: a first indication module, electrically connected to the main control module and configured to light up according to a fourth control signal; a second indication module, electrically connected to the main control module and configured to light up according to a fifth control signal; The main control module is further configured to output the fourth control signal according to the first control signal, and to output the fifth control signal according to the second control signal.
4. The driving recorder control system according to claim 2, characterized in that: The power supply control module includes: a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first transistor, a second transistor, a first field effect transistor, a first capacitor, a second capacitor, a third capacitor, a first voltage stabilizer and a second voltage stabilizer; The first end of the first resistor, the first end of the second resistor, the first end of the third resistor and the source of the first field effect transistor are connected together and are used to input the third control signal. The first end of the fourth resistor is the power input end of the power supply control module. The second end of the first resistor, the first end of the first capacitor, the drain of the first field effect transistor, the input end of the first regulator and the input end of the second regulator are connected together. The second end of the second resistor, the gate of the first field effect transistor and the collector of the second transistor are connected together. The second end of the third resistor, the collector of the first transistor and the base of the second transistor are connected together. The second end of the resistor, the first end of the fifth resistor and the base of the first transistor are connected together, the second end of the fifth resistor, the emitter of the first transistor and the emitter of the second transistor are connected together and connected to the power ground, the output end of the first voltage regulator and the first end of the second capacitor are connected together and used to output the third working voltage, the second end of the first capacitor, the ground terminal of the first voltage regulator and the second end of the second capacitor are connected together and connected to the power ground, the output end of the second voltage regulator and the first end of the third capacitor are connected together and used to output the fourth working voltage, the ground terminal of the second voltage regulator and the second end of the third capacitor are connected together and connected to the power ground.
5. The driving recorder control system according to claim 2, characterized in that: The power supply detection module includes a fourth capacitor, a fifth capacitor and a switch unit; Pin 2 of the switch unit is used to input the working voltage, pin 7 of the switch unit is used to input the second working voltage, pin 3 of the switch unit, pin 4 of the switch unit, the first end of the fourth capacitor and the first end of the fifth capacitor are connected in common and used to output the third control signal, and pin 6 of the switch unit, the second end of the fourth capacitor and the second end of the fifth capacitor are all connected to the power ground.
6. The driving recorder control system according to claim 3, characterized in that: The first indication module includes a first light emitting diode and a sixth resistor, and the second indication module includes a second light emitting diode and a seventh resistor; The first end of the sixth resistor is used to input the fourth control signal, the first end of the seventh resistor is used to input the fifth control signal, the second end of the sixth resistor is connected to the anode of the first light-emitting diode, the second end of the seventh resistor is connected to the anode of the second light-emitting diode, and the cathode of the first light-emitting diode and the cathode of the second light-emitting diode are connected in common and to the power ground.
7. The driving recorder control system according to claim 2, characterized in that: The first radar module includes an eighth resistor, an eleventh resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a seventeenth resistor, an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a twenty-first resistor, a twenty-second resistor, a twenty-third resistor, a seventh capacitor, a tenth capacitor, an eleventh capacitor, a thirteenth capacitor, a fifteenth capacitor, a seventeenth capacitor, a nineteenth capacitor, a twenty-second capacitor and a first radar chip; Pin 1 of the first radar chip is connected to the first end of the nineteenth resistor, pin 2 of the first radar chip is connected to the first end of the twentieth resistor, pin 3 of the first radar chip is connected to the first end of the twenty-first resistor, pin 4 of the first radar chip is connected to the first end of the twenty-second resistor, pin 5 of the first radar chip is connected to the first end of the twenty-third resistor, pin 6 of the first radar chip is used to input the second electromagnetic wave signal with the first antenna, pin 7 of the first radar chip, the first end of the twenty-second capacitor and the first end of the fifteenth resistor are connected in common, pin 8 of the first radar chip, the first end of the nineteenth capacitor and the first end of the fourteenth resistor are connected in common, pin 9 of the first radar chip is connected to the first end of the fifteenth capacitor, pin 10 of the first radar chip is connected to the first end of the thirteenth capacitor, pin 11 of the first radar chip is connected to the first end of the tenth capacitor, pin 12 of the first radar chip, the first end of the seventh capacitor and the first end of the eighth resistor are connected in common, pin 13 of the first radar chip is connected to the first end of the eleventh resistor, pin 14 of the first radar chip is connected to the second end of the eleventh resistor, pin 15 of the first radar chip, the first end of the eleventh capacitor The first end of the first radar chip is connected and used as a test point, the 16th pin of the first radar chip is connected to the first end of the thirteenth resistor, the 17th pin of the first radar chip is connected to the first end of the seventeenth resistor, the 18th pin of the first radar chip is connected to the first end of the eighteenth resistor, the 19th pin of the first radar chip and the 21st pin of the first radar chip are both connected to the power ground, the 10th pin of the first radar chip is used to output the first electromagnetic wave signal, the second end of the nineteenth resistor, the second end of the twentieth resistor, the second end of the twenty-first resistor, the second end of the twenty-second resistor, the second end of the twenty-third resistor, the The second end of the nineteenth capacitor, the second end of the twenty-second capacitor, the second end of the seventh capacitor, the second end of the tenth capacitor and the second end of the eleventh capacitor are all connected to the power ground, the second end of the fifteenth capacitor, the second end of the fourteenth resistor and the first end of the seventeenth capacitor are connected in common, the second end of the thirteenth capacitor, the second end of the seventeenth capacitor and the second end of the fifteenth resistor are connected in common, the second end of the eighth resistor is used to input the third operating voltage, the second end of the thirteenth resistor is used to output the first control signal, and the second end of the seventeenth resistor and the second end of the eighteenth resistor are used to communicate with the main control module.
8. The driving recorder control system according to claim 2, characterized in that: The second radar module includes a ninth resistor, a tenth resistor, a twelfth resistor, a sixteenth resistor, a twenty-fourth resistor, a twenty-fifth resistor, a twenty-sixth resistor, a twenty-seventh resistor, a sixth capacitor, an eighth capacitor, a ninth capacitor, a twelfth capacitor, a fourteenth capacitor, a sixteenth capacitor, an eighteenth capacitor, a twentieth capacitor, a twenty-first capacitor, a twenty-third capacitor, a first inductor and a second radar chip; Pin 1 of the second radar chip is connected to the first end of the twenty-fourth resistor, pin 2 of the second radar chip is connected to the first end of the twenty-fifth resistor, pin 3 of the second radar chip is connected to the power ground, pin 4 of the second radar chip is connected to the first end of the twenty-sixth resistor, pin 5 of the second radar chip is connected to the first end of the twenty-seventh resistor, pin 6 of the second radar chip is connected to the first end of the twenty-third capacitor, pin 7 of the second radar chip, the first end of the twenty-first capacitor and the first end of the sixteenth resistor are connected in common, pin 8 of the second radar chip, the first end of the eighteenth capacitor and the first end of the twelfth resistor are connected in common, pin 9 of the second radar chip is connected to the first end of the fourteenth capacitor, pin 10 of the second radar chip is connected to the first end of the twelfth capacitor, pin 11 of the second radar chip is connected to the first end of the ninth capacitor, pin 12 of the second radar chip is connected to the first end of the sixth capacitor and is used to input the fourth working voltage, pin 13 of the second radar chip is unconnected, pin 14 of the second radar chip, the first end of the eighth capacitor and the first end of the tenth resistor are connected in common, pin 15 of the second radar chip is connected to the first end of the The first end of the ninth resistor is connected, the 16th pin of the second radar chip and the 17th pin of the second radar chip are used to communicate with the main control module, the 18th pin of the second radar chip and the 21st pin of the second radar chip are both connected to the power ground, the 19th pin of the second radar chip, the first end of the 20th capacitor and the first end of the first inductor are connected in common, the 20th pin of the second radar chip and the second end of the 24th resistor, the second end of the 25th resistor, the second end of the 26th resistor, the second end of the 27th resistor, the second end of the 18th capacitor, the second end of the 21st capacitor, the second end of the 6th capacitor, the second end of the 9th capacitor, the second end of the 8th capacitor and the second end of the first inductor are all connected to the power ground, the second end of the 23rd capacitor is used to input the fourth electromagnetic wave signal, the second end of the 16th resistor, the second end of the 12th capacitor, and the first end of the 16th capacitor are connected in common, the second end of the 12th resistor, the second end of the 14th capacitor and the second end of the 16th capacitor are connected in common, the second end of the 9th resistor and the second end of the 10th resistor are connected and used to output the second control signal, and the second end of the 20th capacitor is used to output the third electromagnetic wave signal.
9. The driving recorder control system according to claim 2, characterized in that: The main control module includes a main control chip, pin 8 of the main control chip and pin 9 of the main control chip are used to communicate with the first radar module and the second radar module, pin 10 of the main control chip is used to input the second control signal, pin 11 of the main control chip is used to input the first control signal, pin 12 of the main control chip is used to output a fourth control signal, pin 13 of the main control chip is used to output a fifth control signal, pin 14 of the main control chip is used to input the second operating voltage, pin 16 of the main control chip is used to output the first operating voltage, and pin 16 of the main control chip is connected to the power ground.
10. A driving recorder, characterized in that: It comprises a driving recorder control system as described in any one of claims 1 to 9.