CN212529543U - Vehicle obstacle detection collision avoidance device and vehicle - Google Patents
Vehicle obstacle detection collision avoidance device and vehicle Download PDFInfo
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- CN212529543U CN212529543U CN202020532250.0U CN202020532250U CN212529543U CN 212529543 U CN212529543 U CN 212529543U CN 202020532250 U CN202020532250 U CN 202020532250U CN 212529543 U CN212529543 U CN 212529543U
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Abstract
本实用新型提供了一种车辆障碍物检测避撞装置及车辆，涉及车辆安全技术领域。本实用新型的车辆障碍物检测避撞装置，包括至少一个外光电开关，红外光电开关用于检测车辆底盘下方和/或车身周围的障碍物，红外光电开关包括红外光发射器和红外光接收器，红外光发射器用于向车辆底盘下方和/或车身周围发射红外光，红外光接收器用于接收车辆底盘下方和/或车身周围障碍物反射的红外光；控制器，用于接收光电开关在接收到障碍物反射的红外光时触发检测信号。所述车辆设置有前述的车辆障碍物检测避撞装置。本实用新型的车辆障碍物检测避撞装置及车辆，可以解决现有的现有车辆障碍物检测技术无法检测快速准确检测出车辆底盘下方的障碍物的技术问题。
The utility model provides a vehicle obstacle detection and collision avoidance device and a vehicle, which relate to the technical field of vehicle safety. The vehicle obstacle detection and collision avoidance device of the utility model comprises at least one external photoelectric switch. The infrared photoelectric switch is used to detect obstacles under the vehicle chassis and/or around the vehicle body. The infrared photoelectric switch includes an infrared light transmitter and an infrared light receiver. , the infrared light transmitter is used to emit infrared light under the vehicle chassis and/or around the body, and the infrared light receiver is used to receive the infrared light reflected from the obstacles under the vehicle chassis and/or the body; the controller is used to receive the photoelectric switch when receiving The detection signal is triggered when the infrared light reflected by the obstacle is encountered. The vehicle is provided with the aforementioned vehicle obstacle detection and collision avoidance device. The vehicle obstacle detection and collision avoidance device and the vehicle of the utility model can solve the technical problem that the existing vehicle obstacle detection technology cannot quickly and accurately detect the obstacles under the vehicle chassis.
Description
Technical Field
The utility model relates to a vehicle safety technical field specifically is a vehicle barrier detects collision avoidance device and vehicle.
Background
The vehicle can be difficult to avoid meeting the barrier in the use, for example the automobile body slope decline in-process of one side when the bus is at the parking platform, when engineering vehicle is in the operation of hole non-pavement road surface, when cross-country vehicle is gone in the field, automobile body chassis probably takes place to collide with ground barrier, causes the damage of vehicle. In the prior art, ultrasonic waves, radars, cameras or other devices are also used to acquire real-time road condition information. However, in the prior art, only road condition information around the vehicle body is collected, and the condition of an obstacle below the vehicle chassis is ignored, and the area below the vehicle chassis cannot be observed by a driver, so that the condition that the vehicle chassis collides with a ground obstacle to cause vehicle damage is more likely to occur.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a vehicle barrier detects collision avoidance device and vehicle for solve the technical problem that current vehicle barrier detection technology can't detect the barrier that detects vehicle chassis below fast accurately.
In a first aspect, the present invention provides a vehicle obstacle detection collision avoidance device, including:
the infrared photoelectric switch is used for detecting obstacles below a vehicle chassis and/or around a vehicle body and comprises an infrared light emitter and an infrared light receiver, the infrared light emitter is used for emitting infrared light to the below of the vehicle chassis and/or around the vehicle body, and the infrared light receiver is used for receiving the infrared light reflected by the obstacles below the vehicle chassis and/or around the vehicle body;
and the controller is used for receiving the infrared photoelectric switch and triggering a detection signal when receiving the infrared light reflected by the obstacle.
Preferably, the vehicle obstacle detection collision avoidance device comprises a first infrared photoelectric switch installed below a vehicle chassis and used for detecting an obstacle below the vehicle chassis, wherein the first infrared photoelectric switch comprises an infrared light emitter and an infrared light receiver, the infrared light emitter is arranged along the horizontal direction, and the infrared light receiver is used for receiving infrared light reflected by the obstacle;
the second infrared photoelectric switch is arranged outside the vehicle body and used for detecting obstacles around the vehicle body, and comprises an infrared light emitter and an infrared light receiver, and the infrared light receiver is used for receiving infrared light reflected by the obstacles;
the controller is used for receiving a first detection signal triggered by the first photoelectric switch when receiving the infrared light reflected by the obstacle and/or a second detection signal triggered by the second photoelectric switch when receiving the infrared light reflected by the obstacle.
Preferably, the vehicle further comprises a third infrared photoelectric switch, wherein the first infrared photoelectric switch is arranged at the front end of the vehicle to detect the obstacle between the front end of the vehicle and the front wheel of the vehicle, and the third infrared photoelectric switch is arranged at one side of the front wheel of the vehicle close to the rear wheel of the vehicle to detect the obstacle between the front wheel of the vehicle and the rear wheel of the vehicle.
Preferably, the infrared photoelectric switch is installed on the upper portion of the outer side of the vehicle body, and is used for detecting obstacles around the vehicle body, and the infrared photoelectric switch comprises an infrared light emitter and an infrared light receiver, and the infrared light emitter of the second infrared photoelectric switch is arranged along the horizontal direction, and the infrared light generator of the fourth infrared photoelectric switch is arranged downwards along the vertical direction.
Preferably, the vehicle further comprises a fifth infrared photoelectric switch, the fifth infrared photoelectric switch is installed below the vehicle chassis and used for detecting obstacles below the vehicle chassis, the fifth infrared photoelectric switch comprises an infrared light emitter and an infrared light receiver, the infrared light emitter is arranged along the horizontal direction, the first infrared photoelectric switch is located at a first height position below the vehicle chassis, and the fifth infrared photoelectric switch is located at a second height position below the vehicle chassis.
Preferably, still include first installing support, first installing support includes base plate, intermediate junction subassembly and mounting panel, the base plate is used for being connected with the chassis of vehicle, the mounting panel is used for installing first infrared photoelectric switch, intermediate junction subassembly is used for forming height and/or angularly adjustable's connection between base plate and mounting panel.
Preferably, the vehicle obstacle detection collision avoidance device further includes a voltage comparison circuit, the voltage comparison circuit is configured to receive a first detection signal or a second detection signal triggered by the infrared light receiver, and output a terminal voltage signal to the controller according to a comparison result of the first detection signal or the second detection signal, and the controller determines whether an obstacle enters a detection area according to the voltage signal output by the voltage comparison circuit.
Preferably, the infrared light emitter is an infrared transmitting tube, the infrared light receiver is a photosensitive triode, the voltage comparison circuit is a voltage comparator, the anode of the infrared transmitting tube is connected with the power supply through a first resistor, the cathode of the infrared transmitting tube is connected with a public ground end, the collector of the photosensitive triode is connected with the power supply through a second resistor, the emitter of the photosensitive triode is connected with the public ground end, the collector of the photosensitive triode is connected with the anode of the voltage comparator, the cathode of the voltage comparator is connected with a variable resistor, one end of the variable resistor is connected with the power supply, the other end of the variable resistor is connected with the public ground end, the output end of the voltage comparator is connected with the power supply through a third resistor, and the output end of the voltage comparator is connected with the signal input port of the controller.
Preferably, the infrared photoelectric switch further comprises a counting circuit and a timing circuit, the counting circuit is used for counting the number of times that the first infrared photoelectric switch and/or the second infrared photoelectric switch triggers the first detection signal and/or the second detection signal, the timing circuit is used for starting timing when the first detection signal or the second detection signal is triggered for the first time, and the controller is used for judging whether an obstacle appears according to the number signal sent by the counting circuit and the timing signal sent by the timing circuit.
In a second aspect, the present invention provides a vehicle, wherein the vehicle is provided with the first aspect vehicle barrier detection collision avoidance device.
Has the advantages that: the utility model discloses a vehicle barrier detects collision avoidance device and vehicle detects vehicle chassis below and/or the barrier around the automobile body through setting up first red infrared photoelectric switch of utilizing. The utility model discloses utilize infrared photoelectric switch to the vehicle chassis and/or the automobile body transmission infrared light around. Therefore, when the obstacle enters a detection area around the vehicle body or below the chassis, infrared light irradiated on the obstacle is emitted back, when the infrared photoelectric switch receives light reflected back by the obstacle, a detection signal is triggered immediately and sent to the controller, and the controller judges whether the obstacle exists around the vehicle chassis and/or the vehicle body according to the detection signal. The infrared photoelectric switch has short response time, high precision and sensitivity and no influence on natural environment and electromagnetic environment, so that the obstacle below the chassis can be quickly and accurately detected, and the collision between the chassis of the vehicle and the obstacle is avoided.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings, and these drawings are all within the protection scope of the present invention.
Fig. 1 is a layout view of a vehicle obstacle detection collision avoidance device according to embodiment 1 of the present invention on a vehicle;
fig. 2 is a layout view of a vehicle obstacle detection collision avoidance device according to embodiment 2 of the present invention on a vehicle;
fig. 3 is a layout diagram of a fourth infrared photoelectric switch on a vehicle in the vehicle obstacle detection collision avoidance apparatus according to embodiment 1 of the present invention;
fig. 4 is a schematic structural view of a first mounting bracket of the present invention;
fig. 5 is a block diagram of the vehicle obstacle detection collision avoidance apparatus of the present invention;
fig. 6 is a schematic circuit diagram of the vehicle obstacle detection collision avoidance device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In case of conflict, the various features of the embodiments and examples of the present invention may be combined with each other and are within the scope of the present invention.
Example 1:
as shown in fig. 1, the present embodiment provides a vehicle obstacle detection collision avoidance apparatus, which includes a controller and at least one infrared photoelectric switch, wherein the infrared photoelectric switch is used for detecting obstacles below a vehicle chassis and/or around a vehicle body, the infrared photoelectric switch includes an infrared light emitter and an infrared light receiver, the infrared light emitter is used for emitting infrared light to the below of the vehicle chassis and/or around the vehicle body, and the infrared light receiver is used for receiving the infrared light reflected by the obstacles below the vehicle chassis and/or around the vehicle body; the controller is used for receiving the infrared light reflected by the obstacle and triggering a detection signal when the photoelectric switch receives the infrared light.
Specifically, the vehicle obstacle detection collision avoidance device may include a first infrared photoelectric switch 30 and a second infrared photoelectric switch 40.
The first infrared photoelectric switch 30 is installed below the vehicle chassis 10 and used for detecting an obstacle below the vehicle chassis 10, the first infrared photoelectric switch 30 comprises an infrared light emitter and an infrared light receiver, the infrared light emitter is arranged along the horizontal direction, and the infrared light receiver is used for receiving infrared light reflected by the obstacle;
the second infrared photoelectric switch 40 is mounted outside the vehicle body 20 and used for detecting obstacles around the vehicle body 20, and the second infrared photoelectric switch 40 comprises an infrared light emitter and an infrared light receiver which are used for receiving infrared light reflected by the obstacles;
the controller is used for receiving a first detection signal triggered by the first infrared photoelectric switch when receiving the infrared light reflected by the obstacle and/or a second detection signal triggered by the second infrared photoelectric switch when receiving the infrared light reflected by the obstacle.
The first infrared photoelectric switch 30 and the second infrared photoelectric switch 40 in the present embodiment may employ reflection-type photoelectric switches. The infrared light emitter emits infrared light beams to the detection area when the obstacle is detected and avoided, the infrared light emitter emits the infrared light beams to the detection area and is reflected to the infrared light receiver by the obstacle when the obstacle appears in the detection area, a trigger signal is generated after the infrared light receiver receives the infrared light beams reflected by the obstacle, and the controller can judge whether the obstacle enters the detection area according to the condition of receiving the trigger signal.
In the present embodiment, two sets of infrared photoelectric switches, namely a first infrared photoelectric switch 30 and a second infrared photoelectric switch 40, are provided, and the two sets of infrared photoelectric switches are used to detect whether there are obstacles around the vehicle chassis 10 and the vehicle body 20, respectively. Wherein the first infrared photoelectric switch 30 is installed at a certain height position under the vehicle chassis 10, and the infrared light emitter of the first infrared photoelectric switch 30 is arranged along the horizontal direction (x direction in fig. 1 to 3), such arrangement can make the infrared light emitted by the infrared light emitter parallel to the vehicle chassis 10. This allows infrared light to be reflected by the obstacle when the obstacle reaches or exceeds the height of the vehicle chassis 10 at which the infrared light impinges. I.e., the area between the height irradiated by the infrared light and the chassis 10, may be the detection area. When an obstacle enters the detection area, the controller can receive a first detection signal. After receiving the first detection signal, the controller may send an alarm through an indicator light, a voice device, or the like to remind the driver that an obstacle exists below the vehicle chassis 10, so that the driver is ready to avoid the obstacle. In addition, the controller may also be connected to a related actuator, and the controller controls the related actuator to stop the current motion after determining that an obstacle exists under the vehicle chassis 10 according to the first detection signal, so as to prevent the vehicle chassis 10 from colliding with the obstacle.
Wherein the second infrared photoelectric switch 40 is mounted outside the vehicle body 20, the second infrared photoelectric switch 40 may be arranged around the vehicle body 20, i.e. the second infrared photoelectric switch 40 is arranged on the front, the back and both sides of the vehicle body 20, wherein the infrared light emitter faces the detection area around the vehicle body 20 in the infrared photoelectric disclosure. When an obstacle enters the detection area, the infrared light beam emitted by the infrared light emitter to the detection area is reflected to the infrared light receiver by the obstacle, and when the infrared light receiver receives the infrared light beam reflected by the obstacle, a second detection signal is sent to the controller, and the controller can judge whether the obstacle exists around the vehicle body 20 according to the received second detection signal.
In addition, the vehicle obstacle detection collision avoidance device of the present embodiment further includes a fourth infrared photoelectric switch 60, where the fourth infrared photoelectric switch 60 is installed on the upper portion of the outer side of the vehicle body 20, the infrared photoelectric switch is used for detecting obstacles around the vehicle body 20, the fourth infrared photoelectric switch includes an infrared light emitter and an infrared light receiver, the infrared light emitter of the second infrared photoelectric switch 40 is disposed along the horizontal direction, and the infrared light generator of the fourth infrared photoelectric switch 60 is disposed downward along the vertical direction.
As shown in fig. 3, since the area around the vehicle body 20 is large, the combination of the fourth infrared photoelectric switch 60 and the second infrared photoelectric switch 40 is used to detect an obstacle around the vehicle body 20 in the present embodiment. Wherein the second infrared photoelectric switch 40 emits infrared light in a horizontal direction. And the fourth infrared photoelectric switch 60 emits infrared light from top to bottom in the vertical direction, so that the fourth infrared photoelectric switch 60 is not limited by the height of an obstacle when detecting. Obstacles can be detected by the fourth infrared photoelectric switch 60 when the height of some obstacle is lower than the height of the infrared beam emitted by the horizontally arranged second infrared photoelectric switch 40 and is not easily detected by the second infrared photoelectric switch 40.
In a preferred embodiment, the number of the fourth infrared photoelectric switches 60 is plural, the plural fourth infrared photoelectric switches 60 are arranged in a horizontal direction, and a preset distance is provided between two adjacent fourth infrared photoelectric switches 60. In the present embodiment, the fourth infrared photoelectric switches 60 are arranged at intervals in the horizontal direction. Such that the infrared light transmitted by the fourth infrared switch and reflected by the second infrared photoelectric switch 40 may form an array of infrared light. The array divides the area around the vehicle body 20 into a plurality of sub-areas, so that the controller can judge which sub-area or sub-areas the obstacle specifically appears in according to the infrared photoelectric switch corresponding to the received detection signal.
In addition, the detection device of the present embodiment further includes a communication module, which is configured to communicate between the optoelectronic switch and the controller, so that the optoelectronic switch sends the trigger signal to the controller. Wherein the communication module can adopt a wireless communication module.
Example 2
As shown in fig. 2, in order to make the detection of the obstacle under the chassis 10 more accurate, the present embodiment is further improved on the basis of the foregoing embodiment 1. The vehicle obstacle detection collision avoidance device of the present embodiment further includes a third infrared photoelectric switch 50, the first infrared photoelectric switch 30 is disposed at the front end of the vehicle to detect an obstacle between the front end of the vehicle and the front wheels of the vehicle, and the third infrared photoelectric switch 50 is disposed at a side of the front wheels of the vehicle close to the rear wheels of the vehicle to detect an obstacle between the front wheels of the vehicle and the rear wheels of the vehicle.
The present embodiment employs a combination of the first and third infrared photoelectric switches 30 and 50 to improve the accuracy of detecting an obstacle under the chassis 10. Wherein the first and third infrared photoelectric switches 30 and 50 may be disposed in front and rear along the length direction of the vehicle. The effective detection area under the chassis 10 can be divided into a first detection area and a second detection area by the arrangement mode. Wherein the first detection region may be a region between the front end of the vehicle and the front wheels of the vehicle and the second detection region may be a region between the front wheels of the vehicle and the rear wheels of the vehicle. Thus, the controller may receive a first detection signal triggered by the first infrared photoelectric switch 30 when an obstacle enters the first detection area, and may receive a third detection signal triggered by the third infrared photoelectric switch 50 when an obstacle enters the second detection area. Therefore, the controller judges which area has the obstacle according to the infrared photoelectric sensor corresponding to the received detection signal, so that the obstacle detection of the vehicle obstacle detection collision avoidance device is more accurate in detecting the obstacle.
Example 3
In this embodiment, another improvement is made on the basis of the foregoing embodiment 1, in this embodiment, the vehicle obstacle detection collision avoidance device further includes a fifth infrared photoelectric switch, the fifth infrared photoelectric switch is installed below the vehicle chassis 10 and is used for detecting an obstacle below the vehicle chassis 10, the fifth infrared photoelectric switch includes an infrared light emitter and an infrared light receiver, the infrared light emitter is disposed along the horizontal direction, the first infrared photoelectric switch 30 is located at a first height position below the vehicle chassis 10, and the fifth infrared photoelectric switch is located at a second height position below the vehicle chassis 10.
In the present embodiment, a fifth infrared photoelectric switch is added to the first infrared photoelectric switch 30, and the first infrared photoelectric switch 30 and the fifth infrared photoelectric switch are arranged in a staggered manner in the height direction. The effective detection area under the chassis 10 can be divided into a third detection area and a fourth detection area in the height direction (y direction in fig. 1 to 3) by the foregoing arrangement. Thus, when an obstacle enters the third detection area, the controller may receive the first detection signal triggered by the first infrared photoelectric switch 30, and when an obstacle enters the fourth detection area, the controller may receive the fifth detection signal triggered by the fifth infrared photoelectric switch. When a part of the obstacle is in the third detection area and another part of the obstacle is in the fourth detection area, the controller may receive the first detection signal and the fifth detection signal sent by the first infrared photoelectric switch 30 and the fifth infrared photoelectric switch at the same time. The controller judges which area has the obstacle according to the infrared photoelectric sensor corresponding to the received detection signal, so that a vehicle driver can control the vehicle according to the specific height position of the obstacle, or the controller automatically controls the vehicle according to the specific height position of the obstacle.
As shown in fig. 4, in the present embodiment, the vehicle obstacle detection collision avoidance device further includes a first mounting bracket 70, where the first mounting bracket 70 includes a base plate 71, an intermediate connection assembly 72 and a mounting plate 73, the base plate 71 is used for connecting with the chassis 10 of the vehicle, the mounting plate 73 is used for mounting the first infrared photoelectric switch 30, and the intermediate connection assembly is used for forming a height and/or angle adjustable connection between the base plate 71 and the mounting plate 73.
The present embodiment accurately mounts the first infrared photoelectric switch 30 to the chassis 10 of the vehicle by providing the first mounting bracket 70. The first mounting bracket 70 of the present embodiment includes three portions, a base plate 71, an intermediate connecting assembly 72, and a mounting plate 73. The first mounting bracket 70 is mounted on the chassis 10 of the vehicle through a base plate 71. The intermediate connection assembly 72 connects the mounting plate 73 and the base plate 71 together. The first infrared photoelectric switch 30 is mounted on the mounting plate 73. In the embodiment, the height position and the angle position of the mounting plate 73 relative to the base plate 71 are adjusted by using the intermediate connecting piece to adjust the height and the angle of the first infrared photoelectric switch 30 relative to the vehicle chassis 10, so that the first infrared photoelectric switch 30 can be mounted on the vehicle chassis 10 at a better height position and angle position, and the infrared photoelectric switch can be over against a preset detection area, and the accuracy of obstacle detection is further improved.
Wherein the middle connecting component 72 comprises a connecting rod 721, a sleeve 722 and a locking member, one of the connecting rod 721 and the sleeve 722 is connected with the base plate 71, the other is connected with the mounting plate 73, the connecting rod can move along the height direction relative to the sleeve 722 when the locking member is opened so as to adjust the height position between the base plate 71 and the mounting plate 73, and the mounting plate 73 is locked relative to the height position of the adjusting base plate 71 when the locking member is locked.
The first mounting bracket 70 of the present embodiment is used by first mounting the mounting plate 73 to the vehicle chassis 10 via the base plate 71, then adjusting the height position of the mounting plate 73 by moving the connecting rod 721 relative to the sleeve 722 in the height direction, and locking the mounting plate 73 at the current height position by the locking member after the height adjustment. The locking piece can be a locking screw and a locking nut which are used together. A strip-shaped groove extending in the height direction is formed in the sleeve 722, a through hole is formed in the connecting rod at a position corresponding to the strip-shaped groove, a locking screw penetrates into the sleeve 722 from the strip-shaped groove of the sleeve 722 and penetrates out of the strip-shaped groove of the sleeve 722 after penetrating through the through hole in the connecting rod, and a locking nut is in threaded connection with one end, penetrating out of the strip-shaped groove, of the locking screw and is pressed on the sleeve 722, so that the relative position of the connecting rod 721 and the sleeve 722 is locked.
In addition, in this embodiment, the middle connection component 72 further includes an angle adjustment mechanism, the mounting plate 73 is connected to the connecting rod 721 through the angle adjustment mechanism, the angle adjustment mechanism includes a rotation component, a pawl and a ratchet, one end of the rotation component is rotatably connected to the connecting rod 721, the other end of the rotation component is connected to the mounting plate 73, the ratchet is coaxially connected to the rotation component, when the pawl is separated from the ratchet, the rotation component can drive the mounting plate 73 to rotate relative to the base plate 71 to adjust the angle of the mounting plate 73, and when the pawl is clamped into the ratchet, the angular position of the rotation component is locked. The ratchet wheel and the rotating piece are coaxially connected, namely the ratchet wheel and the rotating piece are fixed on the same rotating shaft to rotate synchronously.
In addition, the angle adjusting mechanism further comprises a driving motor, the driving motor is used for driving the rotating part to rotate, and the driving motor can be electrically connected with the controller, so that the controller can control the motor to drive the rotating part to rotate to adjust the angle of the photoelectric switch according to the running condition of the vehicle, such as the uphill slope or the downhill slope.
This embodiment provides a rotatable member that is rotatable relative to the connecting rod 721 and attaches the mounting plate 73 to the end of the rotatable member so that the angle of each first infrared photoelectric switch 30 relative to the vehicle chassis 10 can be adjusted by rotating the rotatable member. When the first infrared switch is adjusted to a preferred angle, the pawl is clamped into the ratchet wheel, and at this time, the ratchet wheel cannot rotate, and the connecting rod 721 coaxially connected with the ratchet wheel is also locked.
Example 4
As shown in fig. 5, in this embodiment, the vehicle obstacle detection collision avoidance device further includes a voltage comparison circuit, where the voltage comparison circuit is configured to receive a first detection signal or a second detection signal triggered by the infrared light receiver, and output a terminal voltage signal to the controller according to a comparison result of the first detection signal or the second detection signal, and the controller determines whether an obstacle enters the detection area according to the voltage signal output by the voltage comparison circuit.
As shown in fig. 6, wherein the infrared light emitter is an infrared transmitting tube D1, the infrared light receiver is a photosensitive triode Q1, the voltage comparison circuit is a voltage comparator U3, the anode of the infrared emission tube D1 is connected with a power supply through a first resistor R1, the cathode of the infrared emission tube D1 is connected with a common ground terminal, the collector of the photosensitive triode Q1 is connected with the power supply through a second resistor R2, the emitter of the photosensitive triode Q1 is connected with the common ground, the collector of the phototriode is connected with the anode of a voltage comparator U3, the cathode of the voltage comparator U3 is connected with a variable resistor R4, one end of the variable resistor R4 is connected with a power supply, the other end of the variable resistor R4 is connected with a common ground end, the output end of the voltage comparator U3 is connected with the power supply through a third resistor R3, and the output end of the voltage comparator U3 is connected with a signal input port of the controller.
If no obstacle enters the detection area, the photosensitive triode Q1 does not receive the reflected infrared light, the photosensitive triode Q1 is cut off, the positive electrode of the voltage comparator U3 is at a high level, so that the voltage of the positive electrode is greater than the voltage of the negative electrode of the voltage comparator U3, and the voltage comparator U3 outputs a high level. When an obstacle enters the detection area, the photosensitive triode Q1 receives reflected infrared light, the photosensitive triode Q1 is conducted, the positive electrode of the voltage comparator U3 is grounded, the voltage of the positive electrode of the voltage comparator U3 is smaller than the voltage of the negative electrode of the voltage comparator U3, and the voltage comparator U3 outputs low level. The controller judges whether an obstacle enters the detection area or not through the change of the level. The voltage comparator U3 may adopt an LM324 chip, the first infrared photoelectric switch may adopt a photoelectric sensor U2 integrated with a phototriode Q1 and an infrared emission tube D1, and the controller may adopt a control chip U1 and may adopt an STC89C52RC microcontroller.
Because the sensor has a certain proportion of detection errors, in order to reduce the false alarm rate, the output signal of the sensor needs to be processed, so as to improve the reliability and the confidence coefficient of the system. The specific method comprises the following steps:
the period and duration of the sensor output signal are counted and the confidence that an obstacle is present in the detection zone is deemed to be above the threshold only if the sensor continues to output an alarm signal for more than a certain time or period. The continuity of the reflected light intensity signal received by the sensor is observed, and if the signal value jumps frequently, the signal is considered to be false alarm or false identification, such as smoke and the like.
In order to implement the foregoing method, the vehicle obstacle detection collision avoidance device of the present embodiment further includes a counting circuit and a timing circuit, the counting circuit is configured to count the number of times that the first infrared photoelectric switch 30 and/or the second infrared photoelectric switch 40 triggers the first detection signal and/or the second detection signal, the timing circuit is configured to start timing when the first detection signal or the second detection signal is triggered for the first time, and the controller is configured to determine whether an obstacle appears according to the number signal sent by the counting circuit and the timing signal sent by the timing circuit.
Example 5
The embodiment provides a vehicle, wherein any one of the vehicle barrier detection collision avoidance devices is arranged in the vehicle, and the vehicle can be a traditional vehicle, a new energy vehicle, an engineering vehicle or a motor farm vehicle, and the like, so that the vehicle can obtain any one of the beneficial effects of the vehicle barrier detection collision avoidance device described above, and the description is omitted here.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. Vehicle barrier detects collision avoidance device, its characterized in that includes:
the infrared photoelectric switch is used for detecting obstacles below a vehicle chassis and/or around a vehicle body and comprises an infrared light emitter and an infrared light receiver, the infrared light emitter is used for emitting infrared light to the below of the vehicle chassis and/or around the vehicle body, and the infrared light receiver is used for receiving the infrared light reflected by the obstacles below the vehicle chassis and/or around the vehicle body;
and the controller is used for receiving the infrared photoelectric switch and triggering a detection signal when receiving the infrared light reflected by the obstacle.
2. The vehicle obstacle detection collision avoidance device according to claim 1, wherein said vehicle obstacle detection collision avoidance device comprises:
the first infrared photoelectric switch is arranged below a vehicle chassis and used for detecting an obstacle below the vehicle chassis, the first infrared photoelectric switch comprises an infrared light emitter and an infrared light receiver, the infrared light emitter is arranged along the horizontal direction, and the infrared light receiver is used for receiving infrared light reflected by the obstacle;
the second infrared photoelectric switch is arranged outside the vehicle body and used for detecting obstacles around the vehicle body, and comprises an infrared light emitter and an infrared light receiver, and the infrared light receiver is used for receiving infrared light reflected by the obstacles;
the controller is used for receiving a first detection signal triggered by the first photoelectric switch when receiving the infrared light reflected by the obstacle and/or a second detection signal triggered by the second photoelectric switch when receiving the infrared light reflected by the obstacle.
3. The vehicle obstacle detection collision avoidance device according to claim 2, further comprising a third infrared photoelectric switch, the first infrared photoelectric switch being provided at a front end of the vehicle to detect an obstacle between the front end of the vehicle and a front wheel of the vehicle, the third infrared photoelectric switch being provided at a side of the front wheel of the vehicle near a rear wheel of the vehicle to detect an obstacle between the front wheel of the vehicle and the rear wheel of the vehicle.
4. The vehicle obstacle detection collision avoidance device according to claim 2, further comprising a fourth infrared photoelectric switch installed at an upper portion of an outer side of a vehicle body, the infrared photoelectric switch being for detecting an obstacle around the vehicle body, the fourth infrared photoelectric switch including an infrared light emitter and an infrared light receiver, the infrared light emitter of the second infrared photoelectric switch being disposed in a horizontal direction, and the infrared light generator of the fourth infrared photoelectric switch being disposed downward in a vertical direction.
5. The vehicle obstacle detection and collision avoidance device according to claim 2, further comprising a fifth infrared photoelectric switch installed below the vehicle chassis for detecting an obstacle below the vehicle chassis, wherein the fifth infrared photoelectric switch includes an infrared light emitter and an infrared light receiver, the infrared light emitter is disposed in a horizontal direction, the first infrared photoelectric switch is located at a first height position below the vehicle chassis, and the fifth infrared photoelectric switch is located at a second height position below the vehicle chassis.
6. The vehicle obstacle detection collision avoidance device according to any one of claims 1 to 5, further comprising a first mounting bracket including a base plate for connection with a chassis of a vehicle, an intermediate connection assembly for mounting a first infrared photoelectric switch, and a mounting plate for forming a height and/or angle adjustable connection between the base plate and the mounting plate.
7. The vehicle obstacle detection collision avoidance device according to any one of claims 1 to 5, wherein: the vehicle obstacle detection collision avoidance device further comprises a voltage comparison circuit, wherein the voltage comparison circuit is used for receiving a first detection signal or a second detection signal triggered by the infrared light receiver and outputting a terminal voltage signal to the controller according to a comparison result of the first detection signal or the second detection signal, and the controller judges whether an obstacle enters a detection area according to the voltage signal output by the voltage comparison circuit.
8. The vehicle obstacle detection collision avoidance device according to claim 7, wherein: the infrared light emitter is an infrared transmitting tube, the infrared light receiver is a photosensitive triode, the voltage comparison circuit is a voltage comparator, the anode of the infrared transmitting tube is connected with a power supply through a first resistor, the cathode of the infrared transmitting tube is connected with a public ground end, the collector of the photosensitive triode is connected with the power supply through a second resistor, the emitter of the photosensitive triode is connected with the public ground end, the collector of the photosensitive triode is connected with the anode of the voltage comparator, the cathode of the voltage comparator is connected with a variable resistor, one end of the variable resistor is connected with the power supply, the other end of the variable resistor is connected with the public ground end, the output end of the voltage comparator is connected with the power supply through a third resistor, and the output end of the voltage comparator is connected with a signal input port of the controller.
9. The vehicle obstacle detection collision avoidance device according to any one of claims 1 to 5, further comprising a counting circuit for counting the number of times that the first infrared photoelectric switch and/or the second infrared photoelectric switch triggers the first detection signal and/or the second detection signal, and a timing circuit for starting timing when the first detection signal or the second detection signal is triggered for the first time, wherein the controller is configured to determine whether an obstacle is present according to the number signal transmitted by the counting circuit and the timing signal transmitted by the timing circuit.
10. Vehicle, characterized in that it is provided with a vehicle obstacle detection collision avoidance device according to any one of claims 1 to 9.
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|---|---|---|---|
| CN202020532250.0U CN212529543U (en) | 2020-04-11 | 2020-04-11 | Vehicle obstacle detection collision avoidance device and vehicle |
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| CN202020532250.0U CN212529543U (en) | 2020-04-11 | 2020-04-11 | Vehicle obstacle detection collision avoidance device and vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113391365A (en) * | 2021-05-12 | 2021-09-14 | Tcl王牌电器(惠州)有限公司 | Stripping detection method and device |
| CN115503602A (en) * | 2022-10-28 | 2022-12-23 | 重庆长安汽车股份有限公司 | Vehicle chassis obstacle early warning method and device, vehicle and storage medium |
-
2020
- 2020-04-11 CN CN202020532250.0U patent/CN212529543U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113391365A (en) * | 2021-05-12 | 2021-09-14 | Tcl王牌电器(惠州)有限公司 | Stripping detection method and device |
| CN113391365B (en) * | 2021-05-12 | 2023-10-13 | Tcl王牌电器(惠州)有限公司 | Film removal detection method and device |
| CN115503602A (en) * | 2022-10-28 | 2022-12-23 | 重庆长安汽车股份有限公司 | Vehicle chassis obstacle early warning method and device, vehicle and storage medium |
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