Road operation safety radar early warning system

Abstract

Compared with the prior art, the road operation safety radar early warning system disclosed by the utility model comprises a control host; the vehicle detector is connected with the control host and is used for detecting upstream vehicles; the power amplifier is connected with the control host and used for controlling audio playing; the directional loudspeaker is connected with the power amplifier and is used for directionally playing audios to the upstream; and the power supply is electrically connected with the control host and the power amplifier. Compared with the prior art, the road operation safety radar early warning system provided by the utility model can integrate various wireless communication technologies to connect various early warning devices together so as to achieve timely, safe and effective early warning; on one hand, intruding vehicles can be reminded to pay attention to road conditions, on the other hand, construction workers and the vehicles can be reminded, bidirectional early warning is achieved, the workers can have sufficient time to respond in the accident rescue and road construction process, personal safety is ensured, and the long-distance high-decibel directional horn can effectively remind upstream vehicles, so that the safety of the workers is improved. And noise pollution to the surrounding environment is avoided.

Description

Technical Field

[0001] The present application relates to the field of road traffic technology, and more specifically, to a road operation safety radar early warning system. Background Art

[0002] In traffic accidents, emergency rescue, road construction and other use scenarios, workers place sound and light warning devices and cones at a certain distance behind to remind the vehicles behind. The traditional method can have a certain degree of warning effect, but it is generally passive. When the moving vehicle does not notice the intrusion, it cannot effectively and timely remind the workers to avoid risks. The traditional method is a static warning. The warning equipment is placed on the ground in the work area. When the work area is changed, it needs to be rearranged, resulting in a waste of manpower and time costs. In addition, the workers need to arrange cones and warning equipment at a certain distance behind in advance. There is a certain risk in this operation process.

[0003] Therefore, how to provide a road operation safety radar warning system that can overcome the existing technical problems and provide timely, safe and effective warnings has become a technical problem that needs to be urgently solved by those skilled in the art. Utility Model Content

[0004] In order to solve the above technical problems, the present application provides a road operation safety radar warning system, which can achieve timely, safe and effective warning, and can effectively enable operators to have sufficient time to react during accident rescue and road construction to ensure personal safety.

[0005] The technical solutions provided by this application are as follows:

[0006] The utility model provides a road operation safety radar early warning system, comprising: a control host; a vehicle detector connected to the control host and used for detecting upstream vehicles; a power amplifier connected to the control host and used for controlling audio playback; a directional speaker power supply connected to the power amplifier and used for directional upstream audio playback, wherein the power supply is electrically connected to the control host and the power amplifier.

[0007] Furthermore, in a preferred embodiment of the present invention, the vehicle detector is a millimeter wave radar.

[0008] Furthermore, in a preferred embodiment of the utility model, the control host includes: a main control module, a power module, a voice module, and a CAN communication interface; the main control module is electrically connected to the power supply through the power module; the main control module is connected to the power amplifier through the voice module; the main control module is electrically connected to the vehicle detector through the CAN communication interface.

[0009] Furthermore, in a preferred embodiment of the utility model, the M12 plug of the power module circuit is connected to an external power supply; the VIN1+ end of the power module circuit is converted and output to a +5VDC board-end power supply through the U13 chip; the +5VDC board-end voltage of the power module circuit is converted and output to a +3.3V power supply through the U14 chip; the VIN1+ end of the power module circuit is connected to the vehicle detector 22 through the P1 connector.

[0010] Furthermore, in a preferred embodiment of the utility model, the communication and power supply interface of the vehicle detector is connected to the P1 connector; the P1 connector includes a VIN1+ terminal, a GND terminal, a radar communication signal CANH terminal, and a radar communication signal CANL terminal; wherein the radar communication signal CANH terminal and the radar communication signal CANL terminal are connected to the CAN transceiver U1 of the CAN communication interface through port protection devices F1, port protection devices F2, port protection devices D1, port protection devices D2, and port protection devices L1.

[0011] Furthermore, in a preferred embodiment of the utility model, the voice module includes a U8 voice IC, a U11 analog switch chip, and a U11 two-choice switch chip; the U8 voice IC is provided with two voice signal control terminals, EN_Alarm_Mode1 and EN_Alarm_Mode2, for selecting the output audio signal type; the power switch state of the U8 voice IC is associated with the transistor Q5; the audio signal of the U8 voice IC is output to the U11 analog switch chip, and the U11 analog switch chip is used to adjust the gain of the analog audio signal according to different channel selection pins; the audio signal after gain of the U11 analog switch chip is output to the U11 two-choice switch chip, and the U11 two-choice switch chip is used to simulate the two-choice switch selection connection to the P3 connector, and is connected to the power amplifier through the P3 connector.

[0012] Furthermore, in a preferred embodiment of the present invention, the system further comprises: an intercom 6;

[0013] The control host also includes: an intercom communication module for connecting to the intercom signal; the intercom communication module includes a U9 chip, the VBAT pin of the U9 chip is connected to the +5VDC of the power module circuit, and is filtered through a capacitor group; the TXD signal end of the U9 chip is connected to the U10 chip, and the U10 level converts the TXD signal into a 3.3V level signal that can be recognized by the main control module; the RXD signal end of the U9 chip is directly connected to the RXD signal pin of the main control module; the ANT pin of the U9 chip is connected to an external antenna;

[0014] The AF_OUT pin of the U9 chip is connected to the P3 connector through the U11 two-to-one switch chip.

[0015] Furthermore, in a preferred embodiment of the utility model, the system also includes: a handheld terminal, a power amplifier control auxiliary machine; the control host also includes: a wireless communication module for signal connection with the handheld terminal and the power amplifier control auxiliary machine; the wireless communication module is connected to the outside through the connector CN3; the wireless communication module is connected to the +5VDC end of the power module circuit through the connector CN3; the TXD signal end of the wireless communication module is connected to the U6 chip, and the U6 level converts the TXD signal into a 3.3V level signal that can be recognized by the main control module; the RXD signal end of the wireless communication module is directly connected to the RXD signal pin of the main control module; the main control module communicates with the LORA module through a serial interface; the handheld terminal and the power amplifier control auxiliary machine are connected to control the control host through the wireless communication module.

[0016] Furthermore, in a preferred embodiment of the present invention, the system further comprises: an alarm light and a vibrating watch; the control host further comprises: an alarm light control module for connecting to the alarm light and the vibrating watch signal; the alarm light control module is connected to the outside via a connector CN4; the alarm light control module is connected to the +5VDC end of the power module circuit via the connector CN4;

[0017] The EN_Watch signal output by the main control module is connected to the alarm light control module after level conversion by transistors Q2 and Q1; the alarm light control module sends an alarm signal to the alarm light and the vibration watch, and the alarm light and the vibration watch receive the same RF control signal and operate synchronously.

[0018] Further, in a preferred embodiment of the utility model, the main control module is an STM32FC8T6 control chip; the handheld terminal includes: an LDO power supply, a lithium battery charge and discharge management circuit, a handheld main control MCU, control buttons, indicator lights, a handheld LORA wireless communication module, and a TFT display screen; the handheld main control MCU is an STM32FC8T6 control chip;

[0019] The LDO power supply provides power to the handheld main control MCU through the lithium battery charge and discharge management circuit; the control button signal is connected to the handheld main control MCU; the indicator light signal is connected to the handheld main control MCU; the handheld LORA wireless communication module signal is connected to the handheld main control MCU; the TFT display signal is connected to the handheld main control MCU.

[0020] Compared with the prior art, the technical solution of a road operation safety radar early warning system provided by the utility model comprises: a control host; a vehicle detector connected to the control host for detecting upstream vehicles; a power amplifier connected to the control host for controlling audio playback; a directional speaker connected to the power amplifier for playing audio directionally upstream, and a power supply is electrically connected to the control host and the power amplifier; compared with the prior art, the road operation safety radar early warning system provided by the utility model can integrate a variety of wireless communication technologies to link various early warning devices together to achieve timely, safe and effective early warning; and can remind intruding vehicles to pay attention to road conditions on the one hand, and remind construction workers and vehicles on the other hand. The two-way early warning can give workers sufficient time to react during accident rescue and road construction to ensure personal safety, and the long-distance high-decibel directional speaker can effectively remind upstream vehicles and avoid noise pollution to the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art 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 creative work.

[0022] Figure 1 A schematic diagram of the system functions of a road operation safety radar warning system provided by an embodiment of the utility model;

[0023] Figure 2 Functional block diagram of the vehicle terminal control host provided by the embodiment of the utility model;

[0024] Figure 3 A schematic diagram of a control host power supply circuit provided by an embodiment of the utility model;

[0025] Figure 4 A schematic diagram of the CAN communication interface of the control host millimeter wave radar provided in an embodiment of the utility model;

[0026] Figure 5 A circuit diagram of a voice module provided by an embodiment of the utility model;

[0027] Figure 6 A schematic diagram of a receiver module for an intercom provided in an embodiment of the utility model;

[0028] Figure 7 Schematic diagram of the LoRa module interface provided by the embodiment of the utility model

[0029] Figure 8The schematic diagram of the control host 433M communication control interface provided by the embodiment of the utility model;

[0030] Fig. 9 A schematic diagram of the control host MCU provided by the embodiment of the utility model;

[0031] Fig.10 This is a functional block diagram of a handheld terminal provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only 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 the field without creative work are within the scope of protection of this application.

[0033] It should be noted that when an element is referred to as being "fixed on" or "set on" another element, it can be directly on the other element or indirectly set on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0034] It should be understood that the terms "length", "width", "up", "down", "front", "back", "first", "second", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do 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 should not be understood as a limitation on the present application.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0036] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the effects and purposes that can be achieved by this application.

[0037] like Figures 1 to 10 As shown, the road operation safety radar warning system provided by the embodiment of the present application includes: a control host 1; a vehicle detector 2 connected to the control host 1 and used to detect upstream vehicles; a power amplifier 3 connected to the control host 1 and used to control audio playback; a directional speaker 4 connected to the power amplifier 3 and used to play audio upstream in a directional manner; a power supply 5, and the power supply 5 is electrically connected to the control host 1 and the power amplifier 3.

[0038] Compared with the prior art, the utility model provides a technical solution for a road operation safety radar early warning system, comprising: a control host 1; a vehicle detector 2 connected to the control host 1 for detecting upstream vehicles; a power amplifier 3 connected to the control host 1 for controlling audio playback; a directional speaker 4 power supply 5 connected to the power amplifier 3 for directional upstream audio playback, the power supply 5 being electrically connected to the control host 1 and the power amplifier 3; compared with the prior art, the road operation safety radar early warning system provided by the utility model can integrate a variety of wireless communication technologies to link various early warning devices together to achieve timely, safe and effective early warning; and can remind intruding vehicles to pay attention to road conditions on the one hand, and remind construction workers and vehicles on the other hand. The two-way early warning can give workers sufficient time to react during accident rescue and road construction to ensure personal safety, and the long-distance high-decibel directional speaker can effectively remind upstream vehicles and avoid noise pollution to the surrounding environment.

[0039] It should be noted that the power supply 5 is a power protection module, which is used to connect to an external power supply.

[0040] Specifically, in a specific embodiment of the present utility model, the vehicle detector 2 is a millimeter wave radar.

[0041] Specifically, in the specific embodiment of the utility model, the control host 1 includes: a main control module 101, a power module 102, a voice module 103, and a CAN communication interface 107;

[0042] The main control module 101 is electrically connected to the power supply 5 via the power module 102 ; the main control module 101 is electrically connected to the power amplifier 3 via the voice module 103 ; the main control module 101 is electrically connected to the vehicle detector 2 via the CAN communication interface 107 .

[0043] Specifically, in a specific embodiment of the utility model, the M12 plug of the power module 102 circuit is connected to an external power supply; the VIN1+ end of the power module 102 circuit is converted and output through the U13 chip to output a +5VDC board-end power supply; the +5VDC board-end voltage of the power module 102 circuit is converted and output through the U14 chip to output a +3.3V power supply; the VIN1+ end of the power module 102 circuit is connected to the vehicle detector 2 through the P1 connector.

[0044] Specifically, in a specific embodiment of the utility model, the communication and power supply interface of the vehicle detector 2 is connected to the P1 connector; the P1 connector includes a VIN1+ terminal, a GND terminal, a radar communication signal CANH terminal, and a radar communication signal CANL terminal; wherein the radar communication signal CANH terminal and the radar communication signal CANL terminal are connected to the CAN transceiver U1 of the CAN communication interface 107 through port protection devices F1, port protection devices F2, port protection devices D1, port protection devices D2, and port protection devices L1.

[0045] Specifically, in a specific embodiment of the utility model, the voice module 103 includes a U8 voice IC, a U11 analog switch chip, and a U11 two-to-one switch chip; the U8 voice IC is provided with two voice signal control terminals, EN_Alarm_Mode1 and EN_Alarm_Mode2, for selecting the output audio signal type; the power switch state of the U8 voice IC is associated with the transistor Q5; the audio signal of the U8 voice IC is output to the U11 analog switch chip, and the U11 analog switch chip is used to adjust the gain of the analog audio signal according to different channel selection pins; the audio signal after gain of the U11 analog switch chip is output to the U11 two-to-one switch chip, and the U11 two-to-one switch chip is used to simulate the two-to-one switch selection connection to the P3 connector, and is connected to the power amplifier 3 through the P3 connector.

[0046] Specifically, in a specific embodiment of the utility model, the system further comprises: an intercom 6;

[0047] The control host 1 also includes: an intercom communication module 106 for signal connection with the intercom 6;

[0048] The intercom communication module 106 includes a U9 chip, the VBAT pin of the U9 chip is connected to the +5VDC of the power module 102 circuit and filtered by a capacitor bank;

[0049] The TXD signal end of the U9 chip is connected to the U10 chip, and the U10 chip converts the TXD signal into a 3.3V level signal that can be recognized by the main control module 101;

[0050] The RXD signal end of the U9 chip is directly connected to the RXD signal pin of the main control module 101;

[0051] The ANT pin of the U9 chip is connected to an external antenna;

[0052] The AF_OUT pin of the U9 chip is connected to the P3 connector through the U11 two-to-one switch chip.

[0053] Specifically, in a specific embodiment of the present utility model, the system further includes:

[0054] Handheld terminal 7, power amplifier control sub-machine 8;

[0055] The control host 1 also includes: a wireless communication module 104 for signal connection with the handheld terminal 7 and the power amplifier control sub-machine 8;

[0056] The wireless communication module 104 is connected to the outside via the connector CN3;

[0057] The wireless communication module 104 is connected to the +5VDC terminal of the power module 102 circuit via the connector CN3;

[0058] The TXD signal terminal of the wireless communication module 104 is connected to the U6 chip, and the U6 level converts the TXD signal into a 3.3V level signal that can be recognized by the main control module 101;

[0059] The RXD signal terminal of the wireless communication module 104 is directly connected to the RXD signal pin of the main control module 101;

[0060] The main control module 101 communicates with the LORA module via a serial interface;

[0061] The handheld terminal 7 and the power amplifier control sub-machine 8 are connected to control the control host 1 through the wireless communication module 104 .

[0062] Specifically, in a specific embodiment of the utility model, the system also includes: an alarm light 9, a vibration watch 10; the control host 1 also includes: an alarm light control module 105 for connecting to the alarm light 9, the vibration watch 10 signal; the alarm light control module 105 is connected to the outside through the connector CN4; the alarm light control module 105 is connected to the +5VDC end of the power module 102 circuit through the connector CN4; the EN_Watch signal output by the main control module 101 is connected to the alarm light control module 105 after level conversion by transistors Q2 and Q1; the alarm light control module 105 sends an alarm signal to the alarm light 9 and the vibration watch 10.

[0063] It should be noted that the warning light 9 is a magnetic sound and light warning light; and the vibration watch 10 is a smart vibration watch.

[0064] Specifically, in a specific embodiment of the present utility model, the main control module 101 is a STM32F103C8T6 control chip;

[0065] The handheld terminal 7 includes: an LDO power supply, a lithium battery charge and discharge management circuit, a handheld main control MCU, control buttons, indicator lights, a handheld LORA wireless communication module, and a TFT display screen;

[0066] The handheld main control MCU is a STM32F103C8T6 control chip;

[0067] The LDO power supply provides power to the handheld main control MCU through the lithium battery charge and discharge management circuit;

[0068] The control button signal is connected to the handheld main control MCU;

[0069] The indicator light signal is connected to the handheld main control MCU;

[0070] The handheld LORA wireless communication module signal is connected to the handheld main control MCU;

[0071] The TFT display screen signal is connected to the handheld main control MCU.

[0072] The following is further described in detail with reference to the accompanying drawings. Figure 1 As shown, the road operation radar warning system involved in the embodiment of the practical information includes: a power protection module; a control host; a 77G millimeter wave radar; two power amplifiers; two directional high-power speakers; a handheld terminal; a power amplifier control sub-machine; a walkie-talkie; an audible and visual alarm light; and a smart vibration watch.

[0073] The power protection module, control host, 77G millimeter-wave radar, two power amplifiers, and a directional high-power speaker device are integrated in a box to form the vehicle-mounted terminal part. The handheld terminal, power amplifier control auxiliary machine, intercom, sound and light alarm light, and smart vibration watch are external accessories that interact with the host through corresponding wireless methods.

[0074] Specific working principle description:

[0075] This system is based on 77G millimeter-wave radar detection technology and is equipped with a power protection module, power amplifier, speaker, intercom, sound and light alarm light, vibration watch, and handheld terminal to form a "safety radar early warning system."

[0076] During actual use, the staff installs the vehicle-mounted terminal on the rear of the work vehicle, wears the smart vibration watch, attaches the magnetic sound and light alarm light to the vehicle body, and sets the corresponding warning parameters through the handheld terminal.

[0077] In an emergency, you can shout to the upstream vehicle behind you through the intercom. The power amplifier control submachine is usually installed in the cab to facilitate the driver to operate the power amplifier during driving. When the rear vehicle enters the upstream rear of the operating vehicle at a speed ≥ the first-level warning speed (such as 80km / h, which can be configured and modified) and ≤ the first-level warning distance (such as 200m, which can be configured and modified), the on-board millimeter-wave radar detects the vehicle, the control host starts the first-level alarm, and turns on the power amplifier speaker to remind the incoming vehicle; the system continuously monitors the speed and distance of the incoming vehicle. If the vehicle speed decreases or leaves the operating safety warning area, the alarm stops. If the vehicle trajectory continues to move forward and reaches ≥ the second-level warning speed (such as 60km / h, which can be configured and modified) and ≤ the second-level warning distance (such as 100m, which can be configured and modified), the control host starts the second-level alarm, and the speaker emits a faster alarm sound. At the same time, the magnetic alarm light is controlled by wireless to sound and light alarm, and the vibration watch vibrates to remind the operator to make emergency avoidance and pay attention to danger.

[0078] Compared with the prior art, the scheme involved in the embodiment of the utility model applies long-distance and high-precision 77G millimeter-wave radar technology to construction vehicles for engineering operations, and integrates various wireless communication technologies to link various warning devices together to achieve timely, safe and effective warning; the active warning method involved in the embodiment of the utility model, on the one hand, reminds intruding vehicles to pay attention to road conditions, and on the other hand, reminds construction workers and vehicles. The two-way warning can effectively enable workers to have sufficient time to react during accident rescue and road construction to ensure personal safety. The long-distance and high-decibel directional horn can effectively remind upstream vehicles and avoid noise pollution to the surrounding environment. The internal control host circuit of the on-board terminal includes: a power supply part, a main control MCU part, an alarm voice module, a LORA wireless communication module, a 433M alarm light control module, a walkie-talkie communication module, and a CAN communication interface.

[0079] Among them, the specific circuit connection of the control host is as follows Figure 3 The power supply is powered by an external vehicle power supply through an M12 plug. VIN1+ is connected to U13 to convert the external power supply into a +5VDC board power supply. The +5VDC is converted into a 3.3V power supply through the U14 chip LDO. Another VIN1+ is connected to the P1 connector to power the external millimeter-wave radar. Figure 4 The communication and power supply interface of the 77G millimeter-wave radar module is connected to the P1 connector. In addition to VIN1+ and GND, the radar communication signals CANH and CANL are connected to the corresponding ports of the CAN transceiver U1 through the port protection device. The MCU reads and configures the relevant parameters of the external radar sensor through CAN communication.

[0080] Voice module see Figure 5 As shown, the U8 voice IC has two built-in alarm tones. Different alarm tones can be switched by controlling the EN_Alarm_Mode1 and EN_Alarm_Mode2 signals through the MCU. At the same time, the power supply of the chip can be controlled by controlling the transistor Q5 to directly turn off the power supply of the U8 voice IC to achieve a silent effect.

[0081] By changing the address selection pins 9, 10, and 11 of U11, the gain of the output analog audio signal can be changed to adjust the volume. The audio signal is connected to the P3 connector through the U11 analog two-to-one switch, and the corresponding port of the external power amplifier is connected to P3 to play the audio information.

[0082] Among them, LORA wireless modules such as Figure 7As shown, the LORA module is connected to the CN3 socket, and the 6th pin of the +5VDC power connector CN3 provides power to the LORA module. The LORA_TXD1 signal is converted into a 3.3V level signal that the MCU can recognize through the U6 level conversion chip, and the LORA_RXD signal is directly connected to the corresponding pin of the MCU. The MCU communicates with the LORA module through the serial interface, and the external handheld terminal and the power amplifier control sub-machine can control the entire system through LORA communication.

[0083] Among them, the 433M warning light sending module is as follows Figure 8 As shown in the figure, the 433M sending module is connected to the CN4 socket, and +5VDC is connected to the 1st pin of CN4 to provide power for the module. The MCU can simulate the sending of switch instructions to the 433M module by controlling the EN_Watch signal and then converting the level of transistors Q2 and Q1. When the external magnetic alarm light and vibration watch receive the signal wirelessly, they will enter the working state of flashing, beeping and vibrating. The on-site construction personnel immediately recognize it as a dangerous state.

[0084] Among them, MCU uses STM32F103C8T6 control chip to complete the communication and control of radar, voice, walkie-talkie, LORA, and 433M modules.

[0085] The handheld terminal includes an LDO power supply, a lithium battery charge and discharge management circuit, a main control MCU, buttons, indicator lights, a LORA wireless communication module, and a TFT display. The system converts the power of the lithium battery into the system's operating voltage of 3.0V through LDO, exchanges data with the control host of the vehicle terminal through LORA communication, sets the relevant alarm parameters of the vehicle terminal through buttons on the handheld terminal, and the TFT screen configured by the system can synchronously display relevant configuration information.

[0086] To be more specific, in scenarios such as traffic accidents, emergency rescue, and road construction, workers place sound and light warning devices and cones at a certain distance behind to remind vehicles behind. Traditional methods can have a certain degree of warning effect, but they are generally passive. When the moving vehicle does not notice the intrusion, it is impossible to effectively and timely remind workers to avoid risks. When the traditional method is used, workers need to place cones and warning devices at a certain distance behind in advance. This operation process has certain risks, and the traditional method is a static warning. The warning equipment is placed on the ground in the operation area. When the operation area is changed, it needs to be rearranged, resulting in a waste of manpower and time costs.

[0087] The technical solution involved in the embodiment of the utility model adopts the active detection technology of millimeter-wave radar sensor, which can predict in advance whether there are dangerous vehicles entering the working area from the rear within a distance of 200m; when a vehicle exceeds the set warning speed and enters the warning distance, a directional speaker is used to play a warning sound to the upstream vehicle to remind the vehicle to pay attention; if the vehicle speed does not drop and reaches the second-level warning distance, the operator is reminded to make emergency avoidance through sound and light alarms and smart vibration bracelets; in an emergency, the staff can connect to the warning system through an intercom and directly play the intercom audio through the directional speaker; the radar warning system is easy to operate and only needs to be installed above the construction vehicle to work. The driver in the cab can set the corresponding warning value and control the warning system through a wireless remote handheld terminal; the system is directly installed on the working vehicle, and the vehicle can also achieve the warning effect during the mobile operation process.

[0088] The system functional architecture involved in the embodiment of the utility model adopts a combination of multiple wireless communication methods, combines various warning devices through a host, adopts a 77G millimeter wave radar module for mobile engineering operation vehicles, and adopts flashing, alarm sound, vibration watch, walkie-talkie, directional speaker and other equipment to realize the warning function, wherein the warning power amplifier can play the warning audio and can also be directly connected to the walkie-talkie to play the walkie-talkie audio; the intelligent handheld terminal involved in the embodiment of the utility model can flexibly set the warning threshold parameters of the safety warning area including distance, width, and vehicle speed, which can be specifically set according to different application scenarios, and the power amplifier controls the auxiliary machine to independently control the system audio playback, which is not affected by other control devices, and is convenient for the driver to operate. Compared with the prior art, it has significant technical effects.

[0089] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A road operation safety radar warning system, characterized in that: include: Control host (1); A vehicle detector (2) connected to the control host (1) and used to detect upstream vehicles; A power amplifier (3) connected to the control host (1) and used to control audio playback; A directional speaker (4) connected to the power amplifier (3) and used to play audio in an upstream direction; A power supply (5), the power supply (5) being electrically connected to the control host (1) and the power amplifier (3).

2. The road operation safety radar warning system according to claim 1, characterized in that: The vehicle detector (2) is a millimeter wave radar.

3. The road operation safety radar warning system according to claim 2, characterized in that: The control host (1) comprises: A main control module (101), a power module (102), a voice module (103), and a CAN communication interface (107); The main control module (101) is electrically connected to the power source (5) via the power module (102); The main control module (101) is connected to the power amplifier (3) via the voice module (103); The main control module (101) is electrically connected to the vehicle detector (2) via a CAN communication interface (107).

4. The road operation safety radar warning system according to claim 3, characterized in that: The M12 plug of the power module (102) circuit is connected to an external power source; The VIN1+ end of the power module (102) circuit is converted by the U13 chip to output a +5VDC board-end power supply; The +5VDC board-end voltage of the power module (102) circuit is converted by the U14 chip to output a +3.3V power supply; The VIN1+ end of the power module (102) circuit is connected to the vehicle detector (2) via the P1 connector.

5. The road operation safety radar warning system according to claim 4, characterized in that: The communication and power supply interface of the vehicle detector (2) is connected to the P1 connector; The P1 connector includes a VIN1+ terminal, a GND terminal, a radar communication signal CANH terminal, and a radar communication signal CANL terminal; The radar communication signal CANH terminal and the radar communication signal CANL terminal are connected to the CAN transceiver U1 of the CAN communication interface (107) through port protection devices F1, F2, D1, D2, and L1.

6. The road operation safety radar warning system according to claim 4, characterized in that: The voice module (103) comprises a U8 voice IC, a U11 analog switch chip, and a U11 two-choice switch chip; The U8 voice IC is provided with two voice signal control terminals, EN_Alarm_Mode1 and EN_Alarm_Mode2, for selecting the output audio signal type; The power switch state of the U8 voice IC is associated with transistor Q5; The audio signal of the U8 voice IC is output to the U11 analog switch chip, and the U11 analog switch chip is used to adjust the gain of the analog audio signal according to different channel selection pins; The audio signal after gain of the U11 analog switch chip is output to the U11 two-to-one switch chip. The U11 two-to-one switch chip is used to simulate a two-to-one switch to be connected to the P3 connector, and is connected to the power amplifier (3) through the P3 connector.

7. The road operation safety radar warning system according to claim 6, characterized in that: The system also includes: an intercom (6); The control host (1) further comprises: an intercom communication module (106) for signal connection with the intercom (6); The intercom communication module (106) comprises a U9 chip, the VBAT pin of the U9 chip is connected to the +5VDC of the power module (102) circuit and is filtered through a capacitor bank; The TXD signal end of the U9 chip is connected to the U10 chip, and the U10 chip converts the TXD signal into a 3.3V level signal that can be recognized by the main control module (101); The RXD signal end of the U9 chip is directly connected to the RXD signal pin of the main control module (101); The ANT pin of the U9 chip is connected to an external antenna; The AF_OUT pin of the U9 chip is connected to the P3 connector through the U11 two-to-one switch chip.

8. The road operation safety radar warning system according to claim 7, characterized in that: The system also includes: Handheld terminal (7), power amplifier control sub-unit (8); The control host (1) further comprises: a wireless communication module (104) for signal connection with the handheld terminal (7) and the power amplifier control sub-machine (8); The wireless communication module (104) is connected to the outside via the connector CN3; The wireless communication module (104) is connected to the +5VDC terminal of the power module (102) circuit via the connector CN3; The TXD signal terminal of the wireless communication module (104) is connected to the U6 chip, and the U6 level converts the TXD signal into a 3.3V level signal that can be recognized by the main control module (101); The RXD signal end of the wireless communication module (104) is directly connected to the RXD signal pin of the main control module (101); The main control module (101) communicates with the LORA module via a serial interface; The handheld terminal (7) and the power amplifier control sub-machine (8) are connected to control the control main machine (1) via the wireless communication module (104).

9. The road operation safety radar warning system according to claim 7, characterized in that: The system also includes: Warning light (9), vibrating watch (10); The control host (1) further comprises: an alarm light control module (105) for connecting signals with the alarm light (9) and the vibration watch (10); The warning light control module (105) is connected to the outside via the connector CN4; The warning light control module (105) is connected to the +5VDC terminal of the power module (102) circuit via the connector CN4; The EN_Watch signal output by the main control module (101) is connected to the warning light control module (105) after being converted into a level by transistors Q2 and Q1; The alarm light control module (105) sends an alarm signal to the alarm light (9) and the vibration watch (10); the alarm light and the vibration watch receive the same radio frequency control signal and operate synchronously.

10. The road operation safety radar warning system according to claim 8, characterized in that: The main control module (101) is a STM32F103C8T6 control chip; The handheld terminal (7) comprises: an LDO power supply, a lithium battery charge and discharge management circuit, a handheld main control MCU, control buttons, indicator lights, a handheld LORA wireless communication module, and a TFT display screen; The handheld main control MCU is a STM32F103C8T6 control chip; The LDO power supply provides power to the handheld main control MCU through the lithium battery charge and discharge management circuit; The control button signal is connected to the handheld main control MCU; The indicator light signal is connected to the handheld main control MCU; The handheld LORA wireless communication module signal is connected to the handheld main control MCU; The TFT display screen signal is connected to the handheld main control MCU.

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