A vehicle blind spot detection device and its detection method

Abstract

The present invention provides a vehicle blind spot detection device and its detection method, which relates to the field of vehicle traffic safety. The vehicle blind spot detection device includes an infrared information acquisition module, an information processing module, and a warning module. This device can detect objects within the blind spot areas in front of and behind the vehicle. The infrared information acquisition module consists of two identical parts, and its function is to detect the blind spot areas with infrared rays and collect information. The information processing module is connected to the two parts of the infrared information acquisition module through transmission lines and processes the information collected by the infrared information acquisition module. The warning module is an independent entity and is not connected to other modules. Its main function is to respond to the results processed by the information processing module. The present invention also specifically provides the detection method of this vehicle blind spot detection device. The present invention is simple and convenient to use. The volume of each module is small and lightweight, and it is for external installation with flexible installation and disassembly. In addition, it can be applied to most vehicle models. The design that the two parts of the infrared information acquisition module share one information processing module makes the whole device more economical.

Description

Technical Field

[0001] The present invention relates to the field of vehicle traffic safety, and particularly to a vehicle blind area detection device and a detection method thereof. Background Art

[0002] With the rapid development of the economy, vehicles have become an indispensable means of transportation in people's daily life and work, bringing great convenience to users' travel. In the prior art, due to reasons such as the driver's line of sight being blocked by the vehicle body and the limited display range of the rearview mirror, there are visual blind areas for the driver during daily driving. When a vehicle, especially a large truck, starts, moves forward, reverses, or turns around, the driver cannot see the situation in the vehicle blind area. If small vehicles such as pedestrians, electric vehicles, and motorcycles appear in the blind area at this time, the driver often cannot detect them, resulting in traffic accidents. The traditional method is to install a camera in the vehicle blind area to expand the driver's field of vision, but it has poor practicality because it has no alarm reminder function and its price is relatively expensive. Therefore, the present invention provides a vehicle blind area detection device and a detection method thereof. Summary of the Invention

[0003] In view of this, the purpose of the present invention is to provide a vehicle blind area detection device and a detection method thereof to solve the above problems.

[0004] Based on the above purpose, in the first aspect, the present invention provides a vehicle blind area detection device, including: an infrared information acquisition module, an information processing module, and a warning module. The infrared information acquisition module is composed of two identical parts, and the information processing module is connected to the two parts of the infrared information acquisition module through a transmission line. The warning module is an independent entity and is not connected to other modules.

[0005] The structure of the infrared information collection module includes an infrared emitter, a holding dish, a holding chamber, a second housing, a first fixing device, a rotating shaft, a rotating support, a lifting bracket, a metal connector, and a first fixing device. The holding dish is a horizontally placed flat cylindrical structure. The infrared emitter is installed inside the holding dish with its probe facing outward. Half of the holding dish is horizontally placed inside the holding chamber, and the rotating shaft connects the two together. The holding dish can drive the infrared emitter to rotate horizontally by a certain angle around the rotating shaft inside the holding chamber, so that the area detected by the infrared emitter is wider. The holding chamber is fixed to the inner side of the bottom of the second housing. The second fixing cover above the holding chamber is fixed to the second housing by screws, and its lower end surface is in close contact with the upper end surface of the holding chamber. The lower end of the rotating support is connected to the second housing, and the other end is connected to the lower end of the lifting bracket. The lifting bracket consists of two parts, one structure is sleeved on the other structure and the two can move relative to each other. The surface of the lifting bracket is equipped with a lifting adjustment knob, and the upper end of the lifting bracket is connected to the first fixing device through a metal connector. The fixing method of the first fixing device is electromagnetic adsorption, and there is an electromagnet on its surface.

[0006] Inside the infrared information collection module, there are also a power supply, a voltage stabilizing circuit, and a second electromagnetic signal processor. The power supply, i.e., the storage battery, supplies power to other parts that require electrical energy through the voltage stabilizing circuit. The voltage stabilizing circuit can ensure the stable operation of other components. The second electromagnetic signal processor is connected to the holding chamber.

[0007] The structure of the information processing module includes a third housing, a transmission line accommodating box, and a second fixing device. The third housing is in the shape of a flat cylinder and is hollow inside, used to accommodate the power supply and electronic devices. One end face is detachable, i.e., the second fixing cover, which can be fixed to the third housing with screws. The second fixing cover is connected to the second fixing device. The second fixing device is similar to the first fixing device, both are electromagnetic adsorption type, and there are electromagnets on their surfaces, but the number and size of the electromagnets are different. The transmission line accommodating box consists of two identical box structures, symmetrically connected to the side surface of the third housing.

[0008] Inside the information processing module, there are also a power supply, a voltage stabilizing circuit, and some electronic devices: an information receiver, an infrared distance sensor, an infrared temperature sensor, a memory, and a processor. Similarly, the storage battery supplies power to the electronic devices through the voltage stabilizing circuit, enabling them to work under ideal electrical conditions. The information receiver is connected to the transmission line, and both it and the processor are connected to the infrared distance sensor and the infrared temperature sensor. The memory is connected to the processor.

[0009] The warning module structure consists of a warning light, a first housing, and a fixed suction cup. The first housing is in the shape of a cuboid and is hollow. There are warning light holes, sound holes, and wire holes on the surface. The warning light extends out from the warning light hole. The power cord extends out from the inside through the wire hole. The bottom fixed suction cup is a rubber suction cup. Inside the warning module, there is also a voltage stabilizing circuit and some electronic devices: a speed sensor, an electromagnetic signal processor, and a voice warning device. The warning module is connected to the vehicle power supply through the power cord. When the vehicle starts, the warning module is powered on and works. The electric energy is supplied to the electronic devices through the voltage stabilizing circuit. The speed sensor, the electromagnetic signal processor, and the voice warning device are connected in sequence, and the warning light is connected to the electromagnetic signal processor.

[0010] In the second aspect of the present invention, a detection method for the vehicle blind area detection device of the present invention is provided.

[0011] S1. When the vehicle starts, the warning module is powered on and emits corresponding electromagnetic signals according to the vehicle speed, determining the working mode of the entire device;

[0012] S2. The infrared information acquisition module starts to operate in Mode 1 (Mode 2) according to the received electromagnetic signal;

[0013] S3. The information receiver of the information processing module receives the information through the transmission line and transmits it to the infrared distance sensor and the infrared temperature sensor;

[0014] S4. The processor is connected to the infrared distance sensor and the infrared temperature sensor, and the processor makes a judgment based on the preset data pre-stored in the memory and the data obtained by the sensors. Determine whether to proceed to the next step according to the judgment result;

[0015] S5. The processor sends an electromagnetic signal to the warning module. The electromagnetic signal processor of the warning module receives the signal, the warning light flashes, and the voice warning device issues a voice reminder.

[0016] The advantages and positive effects of the present invention are:

[0017] 1. The structures such as the receiving bin and the receiving dish of the infrared information acquisition module of the present invention enable the infrared emitter to detect a wider area, basically covering the blind areas in front of and behind the vehicle.

[0018] 2. The present invention is simple and convenient to use. The volume of each module is small and light, which is suitable for external installation, and the installation and disassembly are flexible. In addition, it can be applied to most vehicle models. The design of sharing one information processing module for the two parts of the infrared information acquisition module makes the entire device more economical.

[0019] 3. The present invention applies an infrared temperature sensor and an infrared distance sensor, which can greatly avoid false alarms, making the device more practical.

[0020] 4. The present invention is not limited to the blind spot detection function, and a second working mode of the device is also designed. When the vehicle travels at a speed exceeding a certain value, it switches to the second working mode, which is an extended function that can prompt the driver to maintain a safe vehicle distance, and can play a certain reminder function when the driver is distracted or driving at night, and is also very helpful for some novice drivers. Brief Description of the Drawings

[0021] Figure 1 Schematic diagram of the vehicle blind spot detection device provided by an embodiment of the present invention;

[0022] Figure 2 Schematic diagram of the installation position and detection area of the vehicle blind spot detection device provided by an embodiment of the present invention;

[0023] Figure 3 Flowchart of the detection method of the vehicle blind spot detection device provided by an embodiment of the present invention;

[0024] Figure 4 Schematic diagram of the infrared information acquisition module of the vehicle blind spot detection device provided by an embodiment of the present invention;

[0025] Figure 5 Schematic diagram of the information processing module of the vehicle blind spot detection device provided by an embodiment of the present invention;

[0026] Figure 6 Schematic diagram of the warning module of the vehicle blind spot detection device provided by an embodiment of the present invention;

[0027] Figure 7 Internal structure block diagram of the infrared information acquisition module of the vehicle blind spot detection device provided by an embodiment of the present invention;

[0028] Figure 8 Internal structure block diagram of the information processing module of the vehicle blind spot detection device provided by an embodiment of the present invention;

[0029] Figure 9 Internal structure block diagram of the warning module of the vehicle blind spot detection device provided by an embodiment of the present invention.

[0030] Description of the Drawings The markings in the figures are: 1, warning module; 2, infrared information collection module; 3, information processing module; 11, warning light; 12, first housing; 121, sound hole; 13, fixed chassis; 14, power cord; 21, first fixing device; 211, first electromagnet; 22, metal connector; 23, lifting bracket; 231, lifting adjustment knob; 24, rotating pillar; 25, second housing; 251, second fixing cover; 252, strip-shaped buckle; 26, storage bin; 27, infrared emitter; 271, transmission line; 28, storage dish; 281, rotating shaft; 31, second fixing device; 311, second electromagnet; 312, second fixing device cover; 32, transmission line storage box; 321, storage box cover; 33, third housing; 331, third fixing cover. Detailed Embodiment

[0031] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the following further details the present invention with reference to specific embodiments.

[0032] As Figure 1 shown, the present invention proposes a vehicle blind spot detection device and a detection method for the device as Figure 3 shown. The vehicle blind spot detection device consists of a warning module 1, an infrared information collection module 2, and an information processing module 3. The infrared information collection module 2 includes two identical parts. The information processing module 3 is connected to the two parts of the infrared information collection module 2 through a transmission line. The warning module 1 is an independent entity and is not directly connected to other modules. As Figure 2 shown, the two parts of the infrared information collection module 2 are respectively installed at the front and rear ends of the vehicle, namely position A and position B. The information processing module 3 is installed near position C on the vehicle body. The fixing method of both modules uses electromagnetic adsorption and is strongly adsorbed to the metal part of the vehicle through an electromagnet. It should be noted that after the infrared information collection module 2 is installed, the part except the fixing device needs to be kept horizontal, and its lower bottom surface should be as close as possible to the same horizontal plane as the vehicle chassis, so as to ensure that the infrared information collection module 2 can work in the best state. The warning device 1 can be placed at a prominent position within the driver's field of vision in the vehicle, so as to enhance the reminder effect of the warning device 1.

[0033] As Figure 4The infrared information acquisition module 2 shown in the figure structurally includes a first fixing device 21, a metal connector 22, a lifting bracket 23, a rotating pillar 24, a second housing 25, a receiving chamber 26, an infrared emitter 27, and a receiving dish 28. More specifically, the second housing 25 includes a second fixing cover 251 housing and a strip-shaped buckle 252. The module also includes a first electromagnet 211, a lifting adjustment knob 231, a transmission line 271, and a rotating shaft 281. For the convenience of description, a coordinate axis is introduced. The infrared emitter 27 is in a rod-like structure, with a probe at one end and a transmission line 271 led out at the other end. The receiving dish 28 is in the shape of a flat solid cylinder, with a groove on its side with a depth equal to the radius of its circular surface, and a vertically penetrating circular hole at the center of its circular surface. The transmission line end of the infrared emitter 27 is inserted into the groove of the receiving dish 28. The receiving chamber 26 is in a semi-closed cuboid structure, and there are two protruding semi-annular structures at its unclosed end. First, place half of the receiving dish 28 horizontally into the receiving chamber 26. At this time, the probe of the infrared emitter 27 faces the opposite direction of the x-axis. The rotating shaft 281 vertically passes through the semi-annular structure of the receiving chamber 26 and the circular hole of the receiving dish 28 in sequence, fixing the receiving chamber 26 and the receiving dish 28 together. When the receiving chamber 26 works, it can drive the receiving dish 28 to horizontally rotate around the rotating shaft with the infrared emitter 27. So that the maximum detectable area range of a single infrared emitter 27 is a semi-circular horizontal area at a limited distance, which can basically cover the blind area in front of or behind the vehicle. The receiving chamber 26 is fixed to the inner side of the bottom surface of the second housing 25, and the second fixing cover 251 is connected to the second housing 25 by screws. The rotating pillar 24 is in a flat cylinder structure, and its lower end is connected to the part below it through a gear structure. The upper part is connected to the lifting bracket 23. Through the gear structure at its lower end, the rotating pillar 24 can be manually rotated with a certain force around the center line connecting the centers of its upper and lower circular surfaces to drive the other structures above it to rotate together. The lifting bracket 23 consists of two parts, one part is sleeved on the other part. The part sleeved outside is called the first connecting block, and the inner one is the second connecting block. The second connecting block is in a cuboid structure with a rack on its surface and its lower end is connected to the rotating pillar 24. The lifting adjustment knob 231 is installed on the side of the first connecting block. The lifting adjustment knob 231 meshes with the vertical rack on the side of the second connecting block through a gear. When the knob rotates, it drives the gear to rotate, and the rotation of the gear drives the rack to move up and down, enabling the lifting bracket 23 to achieve the purpose of lifting. Rotating the lifting adjustment knob 231 one turn clockwise or counterclockwise can make the first connecting block rise or fall by 1 cm. One end of the first connecting block is connected to the metal connector 22. The metal connector 22 is composed of a solid cylinder 1 vertically connected to another smaller solid cylinder 2. The solid cylinder 1 is actively connected to the first connecting body of the lifting bracket 23. The solid cylinder 2 is connected to the first fixing device 21. The first fixing device 21 is in a box structure, and 4 electromagnets, namely the first electromagnets 211, are evenly distributed on its surface. Through the metal connector 22, the first fixing device 21 can artificially change its spatial position along an arc path.The lifting bracket 23, the rotating strut 24, and the metal connector 22 enable the electromagnet of the first fixing device 21 to have more selectable adsorption positions on the vehicle. This is reflected in that after the adsorption position of the first electromagnet 211 is fixed, these active structures can be adjusted to enable the entire infrared information acquisition module 2 to work in the best state, and the detection area is the horizontal area.

[0034] As Figure 7 shown, the infrared information acquisition module 2 further includes a storage battery, a voltage stabilizing circuit, and a second electromagnetic signal processor inside. The second electromagnetic signal processor is sequentially connected to the receiving bin 26, the receiving dish 28, and the infrared emitter 27 and is powered by the storage battery through the voltage stabilizing circuit. The transmission line 271 is led out from the receiving dish 28 and the infrared emitter 27 and is connected to the information processing module 3.

[0035] As Figure 5 shown, the information processing module 3 mainly includes a second fixing device 31, a transmission line accommodating box 32, and a third housing 33 in terms of structure. The third housing 33 is a hollow flat cylindrical structure. There are two grooves on the side surface corresponding to the strip-shaped buckle 252 of the infrared information acquisition module 2, so that the infrared information acquisition module 2 and the information processing module 3 can be connected together through the above two structures when the entire device is not installed on the vehicle, which is convenient for carrying and transportation. Two identical structures, namely the transmission line accommodating box 32, are symmetrically connected to the side of the third housing 33. The transmission line accommodating box 32 is a hollow structure including a housing and a housing cover 321. The center of the housing cover 321 is provided with a hole for leading out the transmission line 271. The holes at both ends of the center hole are screw holes, and the housing and the housing cover 321 are fixed by screws. The transmission line accommodating box 32 is used to store the transmission line 271 wound in coils. The required length of the transmission line 271 can be taken out from the transmission line accommodating box 32. The presence of the transmission line accommodating box 32 enables the device of the present invention to be applicable to vehicle models of different lengths. As Figure 5 shown, the upper end of the third housing 33 is a detachable structure, namely the third fixing cover 331, and its upper surface is connected to the second fixing device 31. The second fixing device 31 includes a housing, a second fixing device cover 312, and a second electromagnet 311. Compared with the first electromagnet 211, the second electromagnet 311 is an integral body and has a larger volume. This is because the information processing module 3 is installed at the vehicle body position, and the second electromagnet 311 has more selectable adsorption positions, and the larger volume makes the fixing effect stronger.

[0036] As Figure 8As shown in the figure, inside the information processing module, a storage battery supplies power to other electronic devices, including the second fixing device 31, through a voltage stabilizing circuit. The electronic devices include an information receiver, an infrared distance sensor, an infrared temperature sensor, a memory, and a processor. The information receiver is connected to the transmission line 271 on one hand to receive information, and on the other hand is connected to the two sensors to convert the information into corresponding data. The processor is connected to the two sensors and the memory. The memory is used to store preset data, including a first preset distance, a second preset distance, a third preset distance, and a preset temperature. The processor makes a judgment based on the data obtained from the sensors and the preset data in the memory, and decides whether to perform the next operation, that is, the processor emits an electromagnetic signal to the warning module 1, and the warning module 1 gives a response.

[0037] As Figure 6 shown, the warning module 1 structurally includes a warning light 11, a first housing 12, a fixing suction cup 13, and a power cord 14. The first housing 12 is in the shape of a hollow cuboid, with warning light holes, sound holes 121, and wire holes on its surface. The warning light 11 extends out through the warning light holes. The power cord 14 extends out from the inside through the wire holes. The bottom fixing suction cup 13 is a rubber suction cup. It can be fixed to a conspicuous position within the driver's line of sight like a car decoration, making the warning effect better. As Figure 9 shown, the warning module 1 also includes a voltage stabilizing circuit and some electronic devices inside: a speed sensor, an electromagnetic signal processor, and a voice warning device. The speed sensor, the electromagnetic signal processor, and the voice warning device are connected in sequence, and the warning light 11 is connected to the electromagnetic signal processor. The warning module 1 is connected to the vehicle power supply through the power cord to supply power to the entire module. Along with the vehicle start, the warning module 1 is powered on and starts to work. The speed sensor transmits the vehicle speed information to the electromagnetic signal processor. The electromagnetic signal processor sends an electromagnetic signal to the infrared information collection module 2, and then the infrared information collection module 2 starts in the corresponding mode. When the electromagnetic signal processor receives the electromagnetic signal emitted by the information processing module 2, the electromagnetic signal processor transmits the signal to the warning light 11 and the voice warning device. At this time, the warning light 11 flashes, and the voice warning device issues a voice broadcast to play a warning role.

[0038] When the vehicle blind spot detection device is working, as Figure 3 shown, its detection method is as follows:

[0039] S1. The vehicle starts, the warning module 1 is powered on and emits a corresponding electromagnetic signal according to the vehicle speed, determining the working mode of the entire device;

[0040] S2. The infrared information collection module 2 starts to operate in Mode 1 (Mode 2) according to the received electromagnetic signal;

[0041] S3. The information receiver of the information processing module 3 receives information through the transmission line 271 and transmits it to the infrared distance sensor and the infrared temperature sensor to be converted into corresponding data.

[0042] S4. The processor is connected to the infrared distance sensor and the infrared temperature sensor. The processor makes a judgment based on the preset data pre-stored in the memory and the data obtained from the sensors. When the device operates in Mode 1, only when the following two situations occur: ① The distance between the object and the vehicle is less than or equal to the second preset distance and the temperature of the object reaches the preset temperature range; ② The distance between the object and the vehicle is less than or equal to the first preset distance. When these occur, proceed to the next step. When the device operates in Mode 2, only when the situation: The distance between the object and the vehicle is less than or equal to the third preset distance. When this occurs, proceed to the next step;

[0043] S5. The processor sends an electromagnetic signal to the warning module 1. The electromagnetic signal processor of the warning module 1 receives the signal, the warning light 11 flashes, and the voice warning device issues a voice reminder.

[0044] In the above vehicle blind spot detection device and its method, the third preset distance > the second preset distance > the first preset distance. The preset temperature is a range near the human body temperature range. The infrared probe of the infrared information collection module 2 rotates from one end to the other end and then returns as one cycle.

[0045] In the above vehicle blind spot detection device and its method, when the vehicle speed is zero or less than a certain low speed, the device operates in Mode 1: where the maximum rotation angle of the infrared probe is 180 degrees. The detection area is as Figure 2 shown as Area 1, and the speed can be set to rotate 1 cycle in 1 s. The memory enables the first and second preset distances and the preset temperature. The first preset distance is the most critical warning distance. When the distance between the object and the vehicle is less than or equal to this distance, the driver needs to take action otherwise a collision will occur. When an object near the vehicle may be a person, the temperature can be used to determine whether the object in front is a person. Because of the irregularity of human behavior, a second preset distance farther than the first preset distance is required to achieve the purpose of earlier warning, and this design also greatly reduces the probability of false alarms.

[0046] In the above vehicle blind spot detection device and its method, when the vehicle speed is not zero or greater than a certain low speed, the device operates in Mode 2. Mode 2 is an extended function. Where the rotation angle of the infrared probe of the infrared information collection module 2 becomes smaller. As Figure 2 shown, the detection area is Area 2, but the rotation speed becomes faster and can be set to rotate 2 cycles within 1 s. The purpose of setting Mode 2 is to enable the vehicle to prompt the driver when driving at night or when the driver is distracted during driving that there are other vehicles approaching the front and rear of the vehicle. It can also prompt some novice drivers to keep a safe distance from other vehicles.

[0047] Embodiments of the present invention are intended to cover all such alternatives, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A vehicle blind spot detection device, characterized in that, Including: An infrared information acquisition module, an information processing module, and a warning module; The infrared information acquisition module is structurally composed of an infrared emitter, a receiving dish, a receiving chamber, a second housing, a first fixing device, a rotating shaft, a rotating support column, a lifting bracket, a metal connector, and a first fixing device; the receiving dish is a horizontally placed flat cylinder structure; the infrared emitter is installed inside the receiving dish with the probe direction facing outwards; half of the receiving dish is horizontally placed inside the receiving chamber, and the rotating shaft connects the two together; the receiving dish can drive the infrared emitter to rotate horizontally by a certain angle around the rotating shaft through the receiving chamber, so that the area detected by the infrared emitter is wider; the receiving chamber is fixed to the inner side of the bottom of the second housing, and the second fixing cover above the receiving chamber is fixed to the second housing by screws, and its lower end surface is in close contact with the upper end surface of the receiving chamber; the lower end of the rotating support column is connected to the second housing, and the other end is connected to the lower end of the lifting bracket; the lifting bracket is composed of two parts, one structure is sleeved on the other structure and the two can move relative to each other; a lifting adjustment knob is installed on the surface of the lifting bracket, and the upper end of the lifting bracket is connected to the first fixing device through a metal connector; the fixing method of the first fixing device is electromagnetic adsorption type, and there is an electromagnet on its surface; The infrared information acquisition module also includes a power supply, a voltage stabilizing circuit, and a second electromagnetic signal processor inside; the power supply, that is, the storage battery, supplies power to other parts that require electrical energy through the voltage stabilizing circuit; the voltage stabilizing circuit can ensure the stable operation of other components; the second electromagnetic signal processor is connected to the receiving chamber; The information processing module is structurally composed of a third housing, a transmission line receiving box, and a second fixing device; the third housing is in the shape of a flat cylinder and is hollow inside, used to accommodate the power supply and electronic devices; One end face thereof is detachable, that is, the second fixing cover, and it can be fixed to the third housing with screws; the second fixing cover is connected to the second fixing device; the second fixing device is similar to the first fixing device, both are electromagnetic adsorption type, and there are electromagnets on the surface, but the number and size of the electromagnets are different; the transmission line receiving box is composed of two identical box structures, symmetrically connected to the side surface of the third housing; The information processing module also includes a power supply, a voltage stabilizing circuit, an information receiver, an infrared distance sensor, an infrared temperature sensor, a memory, and a processor inside; similarly, the storage battery supplies power to the information receiver, the infrared distance sensor, the infrared temperature sensor, the memory, and the processor through the voltage stabilizing circuit; the information receiver is connected to the transmission line, and both it and the processor are connected to the infrared distance sensor and the infrared temperature sensor; The memory is connected to the processor; The warning module structure consists of a warning light, a first housing, and a fixed suction cup; the first housing is in the shape of a cuboid, hollow, and has warning light holes, sound holes, and wire holes on its surface; the warning light extends out from the warning light hole, and the power cord extends out from the inside through the wire hole; the bottom fixed suction cup is a rubber suction cup; the warning module also includes a voltage stabilizing circuit, a speed sensor, an electromagnetic signal processor, and a voice warning device inside; the warning module is connected to the vehicle power supply through the power cord, and when the vehicle starts, the warning module is powered on to work; the electrical energy is supplied to the speed sensor, the electromagnetic signal processor, and the voice warning device through the voltage stabilizing circuit; the speed sensor, the electromagnetic signal processor, and the voice warning device are connected in sequence, and the warning light is connected to the electromagnetic signal processor.

2. The detection method of the vehicle blind area detection device according to claim 1, characterized in that It includes the following steps: S1. When the vehicle starts, the warning module is powered on and emits corresponding electromagnetic signals according to the vehicle speed, determining the working mode of the entire device; S2. The infrared information collection module starts to operate in mode one or mode two associated with the vehicle speed according to the received electromagnetic signals, where: Mode one: It starts when the vehicle speed is zero or less than a certain low speed, controls the infrared probe to perform area scanning with a rotation angle of 180°, the scanning period is 1 second / period, and the first preset distance, the second preset distance, and the preset temperature range are enabled; Mode two: It starts when the vehicle speed is not zero or greater than a certain low speed, controls the infrared probe to perform area scanning with a smaller rotation angle, the scanning period is 0.5 second / period, and the third preset distance is enabled; In the above two modes, the third preset distance > the second preset distance > the first preset distance; the preset temperature range covers the human body temperature fluctuation; one cycle of the infrared probe of the infrared information collection module is from one end to the other end and then back; S3. The information receiver of the information processing module receives the information through the transmission line and transmits it to the infrared distance sensor and the infrared temperature sensor; S4. The processor is connected to the infrared distance sensor and the infrared temperature sensor, and the processor makes a judgment based on the preset data pre-stored in the memory and the data obtained by the sensors; determines whether to proceed to the next step according to the judgment result; S5. The processor sends an electromagnetic signal to the warning module, the electromagnetic signal processor of the warning module receives the signal, the warning light flashes, and the voice warning device issues a voice reminder.

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