A monitoring device for engineering vehicles

Abstract

The present invention relates to a monitoring device for engineering vehicles, comprising a control center arranged on a center console in a vehicle cab, and an intelligent recognition mechanism arranged on a vehicle roof, wherein the control center and the intelligent recognition mechanism are electrically connected, and the intelligent recognition mechanism comprises: a detection module, wherein the detection module detects a detection object around the vehicle to obtain position information of the detection object when in operation; a camera capable of moving on the vehicle roof, wherein the camera photographs the position of the detection object based on the position information of the detection object detected by the detection module; the present invention detects the detection object around the vehicle body in the form of detection by setting the detection module, and the camera is arranged on the vehicle roof. Obviously, the shooting clarity of the roof is relatively less affected than that of the left and right sides or the front and rear sides of the vehicle body, and the camera is arranged in a dynamic manner, and its recognition range is also expanded.

Description

Technical Field

[0001] The present invention relates to the technical field related to engineering production monitoring, and in particular to a monitoring device for engineering vehicles. Background Art

[0002] As is known to all, there are many types of construction vehicles, such as excavators, lifting machinery, and industrial vehicles. These vehicles are generally large in size and unusual in shape. In addition, their working environment is also more complex due to their structure, and the driver's blind spots are correspondingly increased. During their operation, if the detection objects around them are too close, it may cause more serious consequences. Therefore, in the prior art, cameras are arranged around the construction vehicles to expand the driver's field of view.

[0003] For example, the authorized patent with announcement number CN207826096U and announcement date September 7, 2018, relates to a safety monitoring device for an engineering vehicle, including a body and a monitoring device, wherein the body includes a tractor and a driven body, a reversing image display is fixedly provided inside the tractor, an electric control box is fixedly provided on one side of the tractor by bolts, one end of the electric control box is connected to a signal cable, the other end of the signal cable is fixedly provided with a signal cable connection socket, the other side of the signal cable connection socket is fixedly provided with a driven body, and side-view cameras are fixedly provided on both sides and below the driven body; monitoring devices are added to both sides of the engineering vehicle, so that when the tractor deviates to one side when the vehicle is reversing, the driver can still obtain a view of both sides, which greatly increases the safety factor of the engineering vehicle when reversing and reduces the chance of accidents.

[0004] The shortcomings of the existing technology are that the operating environment of engineering vehicles is relatively complex. When the light is weak, there is a lot of dust or there is a lot of accumulated debris, the shooting clarity of the cameras arranged on the front, rear or left and right sides of the vehicle will be seriously affected, and the shooting range will also be limited, making it difficult to meet the monitoring needs. Moreover, the static arrangement of the cameras in the existing technology can only identify a limited range. Summary of the Invention

[0005] The purpose of the present invention is to provide a monitoring device for engineering vehicles to solve the technical problems in related technologies.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A monitoring device for an engineering vehicle includes a control center located on a center console in a vehicle cab and an intelligent recognition mechanism located on a vehicle roof. The control center and the intelligent recognition mechanism are electrically connected. The intelligent recognition mechanism includes: a detection module, which detects detection objects around the vehicle to obtain position information of the detection objects when in operation; and a camera that can move on the vehicle roof, which photographs the location of the detection objects based on the position information of the detection objects detected by the detection module.

[0008] As mentioned above, the detection module is an infrared scanner installed on the roof of the vehicle. The infrared scanner scans the surroundings of the vehicle through infrared rays to obtain the position information of the detection object within the range of the vehicle.

[0009] As mentioned above, the detection module is a position sensor provided on the roof of the vehicle, and the position sensor detects the distance to the detection object approaching the vehicle body.

[0010] As mentioned above, the detection module further includes an acousto-optic generator located at the control center, and the acousto-optic generator emits sounds of different sizes and lights of different brightness based on the size of the detection object from the vehicle body detected by the position sensor.

[0011] As mentioned above, the detection module is a sound wave generator and a sound wave receiver arranged on the roof of the vehicle. The sound wave generator emits sound waves to detect detection objects around the vehicle body, and the sound wave receiver receives sound waves rebounded from the detection objects.

[0012] As mentioned above, a base is provided on the vehicle roof, the detection module is provided on the base, a walking mechanism for driving the camera to move is provided on the base, and the walking mechanism drives the camera to move position based on the detection signal of the detection module.

[0013] As mentioned above, the walking mechanism includes a walking track and a driving member provided on a base, a walking gear is installed at the output end of the driving member, a walking rack is installed in the walking track, and the walking gear is meshed with the walking rack.

[0014] As mentioned above, the travel rack comprises a starting section fixed to the travel track, and a buffer section slidingly arranged along the track direction of the travel track, and an elastic member is provided between the starting section and the buffer section.

[0015] As mentioned above, the buffer section is provided with a locking mechanism, and when the buffer section is farthest away from the starting section, the locking mechanism locks the buffer section on the walking track.

[0016] As mentioned above, the walking track has a V-shaped structure, and its two ends correspond to the left front and right front of the vehicle respectively. The number of the buffer sections is two and they are respectively arranged in the two branches of the walking track. The number of the starting sections is two and they are arranged at the intersection of the two branches.

[0017] The beneficial effects of the present invention are: by setting up a detection module, the detection objects around the vehicle body are detected in the form of detection, and the camera can move according to the position of the detection object detected by the detection module, and the detection object is photographed and transmitted to the control center. The camera is set on the roof. Obviously, the roof is relatively less affected in shooting clarity than the left and right sides or front and rear sides of the vehicle body. The camera is arranged in a dynamic manner, and its recognition range is also expanded. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 A schematic diagram of the three-dimensional structure of an intelligent identification mechanism of a monitoring device for engineering vehicles provided by the present invention;

[0020] Figure 2 A schematic plan view of the structure of a traveling mechanism of a monitoring device for an engineering vehicle provided by the present invention;

[0021] Figure 3 A schematic diagram of the three-dimensional structure of a driving component of a monitoring device for an engineering vehicle provided by the present invention;

[0022] Figure 4 A schematic diagram of the three-dimensional structure of a buffer section of a monitoring device for an engineering vehicle provided by the present invention;

[0023] Figure 5 A schematic cross-sectional view of a locking mechanism of a monitoring device for an engineering vehicle provided by the present invention;

[0024] Figure 6 This is a schematic structural diagram of a locking mechanism of a monitoring device for an engineering vehicle provided by the present invention when the locking mechanism is not in operation;

[0025] Figure 7 This is a structural schematic diagram of a locking mechanism of a monitoring device for an engineering vehicle provided by the present invention during operation.

[0026] Description of reference numerals:

[0027] 1. Base; 2. Detection module; 3. Camera; 4. Traveling mechanism; 40. Traveling track; 41. Driving part; 42. Traveling gear; 43. Traveling rack; 430. Starting section; 431. Buffer section; 5. Locking mechanism; 50. Locking groove; 51. Locking rod; 510. Pressure section; 511. Straight section; 512. Connecting section; 52. Extrusion rod; 6. Moving direction of the extrusion rod. DETAILED DESCRIPTION

[0028] In order to make those skilled in the art better understand the technical solution of the present invention, Figures 1 to 7 The present invention is further described in detail.

[0029] In one embodiment of the present invention, a monitoring device for an engineering vehicle is provided, comprising a control center disposed on a center console in a vehicle cab, and an intelligent identification mechanism disposed on a vehicle roof, wherein the control center and the intelligent identification mechanism are electrically connected, and the intelligent identification mechanism comprises: a detection module 2, wherein the detection module 2 detects a detection object around the vehicle when in operation to obtain position information of the detection object; and a camera 3 capable of moving on the vehicle roof, wherein the camera 3 photographs the location of the detection object based on the position information of the detection object detected by the detection module 2.

[0030] Specifically, the control center consists of a display screen and a control panel. The display screen can display the position of the detection object detected by the detection module 2 in real time, and can also display the detection object photographed by the camera 3. The control panel can control the overall power switch, the detection frequency of the detection module 2 or the resolution of the camera 3, etc., so that the driver can always observe the conditions around the vehicle. The detection objects are people, goods and other vehicles encountered by the engineering vehicle during its movement.

[0031] During operation, the detection module 2 detects the detection objects around the vehicle. When there are no detection objects around the vehicle, the camera 3 on the roof takes a wide-angle shot towards the front of the vehicle, that is, the shooting range is close to 180° from the left front to the right front of the vehicle. When the detection module 2 detects the presence of a detection object around the vehicle, the camera 3 can move to the direction of the detection object and shoot the detection object. For ease of understanding, the vehicle is now divided into left and right halves, that is, when the detection object appears on the left or right part of the vehicle, the camera 3 can move to a certain position on the left or right part of the roof. The arrangement allows the camera 3 to just capture the left side, left front, or right side, right front of the vehicle body, which is equivalent to shooting from a bird's-eye view. The dust raised by the vehicle's movement is mainly concentrated on the side and rear of the vehicle body. During the vehicle's movement, the dust is backward relative to the vehicle's driving direction, and the accumulated objects are also accumulated on both sides of the lane. The camera 3 shooting from a bird's-eye view can better capture the location of the detection object. Obviously, the movement of the camera 3 only requires a mechanism to be set in the two directions mentioned above to drive the camera 3 to move back and forth. This is a prior art and will not be repeated.

[0032] In this embodiment, a detection module 2 is provided to detect the detection objects around the vehicle body in the form of detection, and the camera 3 can move according to the position of the detection object detected by the detection module 2, and shoot the detection object and transmit it to the control center. The camera 3 is set on the roof. Obviously, the shooting clarity of the roof is relatively less affected than the left and right sides or the front and rear of the vehicle body, and the camera 3 is arranged in a dynamic manner, and its recognition range is also expanded.

[0033] Preferably, the detection module 2 is an infrared scanner installed on the roof of the vehicle. The infrared scanner scans the surroundings of the vehicle through infrared rays to obtain the position information of the detection object within the range of the vehicle. Specifically, the object will absorb specific light waves, and the light waves that are not absorbed will be reflected. The infrared scanner emits infrared light to irradiate the detection object, and uses the above principle to obtain the location of the detection object and transmit the obtained signal back to the control center.

[0034] Preferably, the detection module 2 is a position sensor provided on the roof of the vehicle, and the position sensor detects the distance of the detection object close to the vehicle body; specifically, the sensor can sense the information of the measured object and convert the sensed information into the required signal for output. When the distance between the detection object and the vehicle is less than the set value, such as when the distance between the detection object and the vehicle body is less than 10 meters, the sensor will sense the position of the detection object and convert it into a signal that can be output and transmitted to the control center, thereby realizing the transmission of the detection object position signal.

[0035] Preferably, the detection module 2 also includes an acousto-optic generator located at the control center, and the acousto-optic generator emits sounds of different sizes and lights of different brightness based on the size of the detection object from the vehicle body detected by the position sensor; specifically, when the driver is driving the vehicle, he needs to concentrate on facing various emergencies. Therefore, after the position sensor senses that the distance between the detection object and the vehicle is less than 10 meters, the driver can be notified in a timely manner in some or several forms. Obviously, taking sound as an example, noise will be generated when the vehicle is driving, and there will also be noise at some construction sites with relatively harsh environments. These noises will inevitably cover other sounds, making it impossible for the driver to hear clearly. Taking light as an example, when there is sufficient light, the light emitted by the acousto-optic generator may also be covered by other lights. The acousto-optic generator uses the position signal of the detection object transmitted by the position sensor to emit sound and light at the same time. The closer the detection object is to the vehicle body, the louder the sound and the brighter the light emitted by the acousto-optic generator. The sound can be more prominent and the light can be more conspicuous so that the driver can be reminded in time.

[0036] Preferably, the detection module 2 is a sound wave generator and a sound wave receiver arranged on the roof of the vehicle. The sound wave generator emits sound waves to detect the detection objects around the vehicle body, and the sound wave receiver receives the sound waves rebounded from the detection objects. Specifically, the sound wave generator emits sound waves, and the sound waves propagate toward the surroundings of the vehicle. When there is a detection object within a certain distance from the vehicle (such as when the distance between the detection object and the vehicle is less than 10 meters), the detection object will reflect a part of the sound wave back, and the sound wave receiver will receive this part of the reflected sound wave and transmit it to the control center, that is, the sound wave positioning method is used to detect whether there is a detection object around the vehicle.

[0037] Obviously, the above-mentioned detection module 2: infrared scanner, position sensor or sound wave generator and sound wave receiver can all detect whether there is a detection object within a certain range around the vehicle (such as the distance between the detection object and the vehicle is less than 10 meters). However, in this embodiment, the detection module 2 is not limited to the above-mentioned detection instruments, and any instrument that can detect whether there is a detection object within a certain distance around the vehicle can be used.

[0038] like Figures 1 to 5As shown, in another embodiment of the present invention, a base 1 is provided on the roof, the detection module 2 is provided on the base 1, and a walking mechanism 4 is provided on the base 1 for driving the camera 3 to move, and the walking mechanism 4 drives the camera 3 to move its position based on the detection signal of the detection module 2; specifically, the base 1 is a metal plate, which is fixed to the roof of the vehicle by a detachable connecting mechanism such as bolts, providing an installation position for the detection module 2 and the walking mechanism 4, and the walking mechanism 4 on the base 1 can drive the camera 3 to move to a desired position according to the detection signal of the detection module 2, that is, the position of the camera 3 after movement, its shooting range can be moved to a certain position on the left or right part of the roof, and this position allows the camera 3 to just shoot the left side, left front, or right side, right front of the vehicle body, and shoot from a bird's-eye view.

[0039] Preferably, the walking mechanism 4 includes a walking track 40 and a driving member 41 provided on the base 1, and a walking gear 42 is installed at the output end of the driving member 41, and a walking rack 43 is installed in the walking track 40, and the walking gear 42 is meshed with the walking rack 43; specifically, after the driving member 41 receives the position signal of the detection object detected by the detection module 2, it drives the walking gear 42 connected thereto to rotate, and the rotation of the walking gear 42 will move on the walking rack 43 meshed therewith, and the moving direction is the same as the length direction of the walking rack 43, so as to drive the camera 3 to move to the specified position.

[0040] Furthermore, the walking rack 43 includes a starting section 430 fixed to the walking track 40, and a buffer section 431 slidingly arranged along the track direction of the walking track 40. The starting section 430 is connected to the buffer section 431, and an elastic member is provided between the bottoms of the two, so that the two have a normal docking position and a separation position when subjected to force; specifically, during the driving process of the vehicle, after the detection module 2 detects the position of the detection object, the detection module 2 can only identify the position of the detection object, and cannot fully determine whether the detection object is a person, cargo or other vehicle. Therefore, after the driving member 41 receives the signal from the detection module 2, it will immediately drive the walking gear 42 to rotate, so as to drive the camera 3 to move along the length direction of the walking rack 43, so that the camera 3 reaches the designated position as soon as possible to shoot the detection object, then the camera 3 needs to move with the driving member 41, and the two can be regarded as one. The camera 3 is mounted on the driving member 41. After the driving member 41 quickly brings the camera 3 to the designated position, it needs to stop immediately. The resulting inertia will affect the connection between the camera 3 and the driving member 41. The acceleration and deceleration of the vehicle will aggravate this situation, causing the camera 3 to tend to separate from the driving member 41. Therefore, in this embodiment, the running rack 43 is divided into a starting section 430 and a buffer section 431. The running gear 42 stops immediately after reaching the end of the buffer section 431 farthest from the starting section 430. Due to inertia, the buffer section 431 is driven away from the starting section 430, that is, the separation position. The elastic force of the elastic member increases to resist the inertial force exerted on the buffer section 431 by the driving member 41 and the camera 3 until the buffer section 431 stops moving away from the starting section 430. Then, due to the rebound force of the elastic member, the buffer section 431 returns to its original contact position with the starting section 430. The camera 3 can then take a picture of the detection object for the driver to identify the detection object.

[0041] Since the installation of the base 1 is not convenient for extending beyond the width or length of the vehicle body, the excess part may pose a danger during driving. Therefore, the length of the running track 40 is also limited, and the camera 3 will have a blind spot. That is, when the camera 3 is at the edge of the vehicle roof, it cannot capture the position close to and directly below it. In this embodiment, during the journey from the buffer section 431 moving away from the starting section 430 to the final return to the initial position and contacting the starting section 430, the camera 3 is at the position farthest from the starting section 430 on the buffer section 431. The camera 3 will appear to be suspended in the air off the vehicle roof. In this process, the camera 3 can capture positions particularly close to the vehicle. For example, originally the camera 3 could not capture the space within 1 meter of the vehicle. When the camera 3 follows the buffer section 431 away from the starting section 430, it can temporarily capture the space within 1 meter of the vehicle, thus avoiding the blind spot.

[0042] Furthermore, a locking mechanism 5 is provided on the buffer section 431. When the buffer section 431 is at the farthest distance from the starting section 430, the locking mechanism 5 locks the buffer section 431 on the running track 40. Specifically, the rebound force generated by the elastic member resists the buffer section 431 from moving away from the starting section 430. When the buffer section 431 can no longer move in the direction away from the starting section 430, the buffer section 431 is driven to move in the opposite direction and contact the starting section 430 again. However, there is still a certain inertia problem. Although the inertia is smaller than that generated when the driving member 41 drives the camera 3 to move and brake suddenly, there is still a risk that the camera 3 will be separated from the driving member 41. Therefore, in this embodiment, when the buffer section 431 is at the farthest distance from the starting section 430, the locking mechanism 5 is used to lock the buffer section 431 on the running track 40, thereby avoiding the above-mentioned situation. In addition, the camera 3 can be away from the roof at a sufficient distance and for a sufficient time to shoot the space that is too close to the vehicle body.

[0043] The locking mechanism 5 includes a locking groove 50 provided on the side wall of the walking track 40, a locking rod 51 is hinged on the buffer section 431, and a torsion spring is provided at the hinge of the two. The torsion spring makes the locking rod 51 always tend to be plugged into the locking groove 50. The locking rod 51 consists of three parts: a pressure section 510, a driving member 41 carrying the camera in the process of moving toward the starting section 430 (as shown in the attached figure). Figure 7 As shown in the figure, the driving member 41 drives the extrusion rod 52 to contact the pressure section 510. When the buffer section 431 is locked, one end of the pressure section 510 is closer to the center line of the travel rack 43; the straight section 511, the connection between the pressure section 510 and the straight section 511 is rotatably connected to the travel rack 43, and the position of the straight section 511 is lower than the pressure section 510, so that the extrusion rod 52 will contact it when moving back and forth; the plug-in section 512 is an arc-shaped structure, and the center of the circle is at the center of rotation of the connection between the straight section 511 and the pressure section 510.

[0044] When the plug-in section 512 does not correspond to the locking groove 50, the side wall of the walking track 40 causes the plug-in section 512 to tilt toward the center line of the walking rack 43. When the plug-in section 512 corresponds to the locking groove 50, under the action of the rebound force of the torsion spring, the plug-in section 512 is plugged into the locking groove 50, locking the buffer section 431 on the walking track 40. The driving member 41 is provided with an extrusion rod 52. When the plug-in section 512 is not plugged into the locking groove 50, the extrusion rod 52 will not contact the compressed section 510 when passing the position of the locking rod 51 (in this process, the driving member 41 drives the camera 3 to move in the direction away from the starting section 430, as shown in the attached figure). Figure 6As shown), when the plug-in section 512 is plugged into the locking groove 50, the extrusion rod 52 passes the position of the locking rod 51, which will squeeze the compressed section 510 (in this process, the driving member 41 drives the camera 3 to move toward the direction close to the starting section 430, as shown in the attached figure). Figure 7 As shown), the locking rod 51 swings, the plug-in section 512 disengages from the locking groove 50, and the buffer section 431 loses its lock with the walking track 40. Then, under the action of the rebound force of the elastic member, the buffer section 431 returns to its initial position and contacts the starting section 430. The driving member 41 can also drive the camera 3 to return to its initial position on the starting section 430.

[0045] The time it takes a driver to assess the surrounding conditions will vary depending on the vehicle's speed. Therefore, the speed at which the driver 41 drives the camera 3 can be adjusted accordingly. When the vehicle is traveling at a slow speed, the speed at which the driver 41 drives the camera 3 will be slower. When the driver 41 stops, the inertial force generated will be correspondingly smaller, thereby reducing damage to the connection between the camera 3 and the driver 41. With the reduced inertial force, the distance between the buffer section 431 and the starting section 430 will be shortened. Therefore, multiple locking slots 50 can be provided along the length of the running track 40. For example, if the vehicle's speed is categorized as 0-30 mph, 30-60 mph, and 60-90 mph, then three locking slots 50 can be provided on the running track 40 accordingly. In this way, when the driver 41 drives the camera 3 away from the starting section 430 at three different speeds (i.e., speeds relative to the vehicle's speed, such as 20 mph, 50 mph, and 80 mph), the buffer section 431 can be locked in different positions without affecting the camera 3's ability to capture images beyond the edge of the roof.

[0046] Preferably, the walking track 40 is in a V-shaped structure, and its two ends correspond to the left front and the right front of the vehicle respectively. The number of the buffer sections 431 is two and they are respectively arranged in the two branches of the walking track 40. The number of the starting sections 430 is two and they are arranged at the intersection of the two branches. Specifically, the walking track 40 is in a V-shaped structure, and the angle of the V-shaped structure can be adjusted according to the structure of the top of the vehicle. When the two ends of the V-shaped structure are in the left front and the right front of the vehicle, it is obvious that the shooting range of the camera 3 can be expanded, and it can be obtained based on limited experiments. No more details will be given here, and it is To facilitate the movement of the driving member 41 from the initial position toward each branch channel, the positions of the traveling gear 42 and the traveling rack 43 will not interfere with each other. Preferably, the angle of the V-shaped structure is a right angle, so that the driving member 41 can be composed of two driving motors, and a traveling gear 42 is installed at the output end of each driving motor. The central axes of the two racks are perpendicular to each other. When one driving motor drives the traveling gear 42 connected to it to move on the corresponding traveling rack 43, the other traveling gear 42 will slide out from the corresponding traveling rack 43 along the length direction of the teeth. While the structure is simple, it also avoids the problem of movement interference.

[0047] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims.

Claims

1. A monitoring device for an engineering vehicle, characterized in that: The system comprises a control center located on the center console of the vehicle cab and an intelligent recognition mechanism located on the roof of the vehicle. The control center and the intelligent recognition mechanism are electrically connected. The intelligent recognition mechanism comprises: A detection module, which detects detection objects around the vehicle to obtain location information of the detection objects when in operation; A camera capable of moving on the roof of the vehicle, the camera photographing the location of the detection object based on the location information of the detection object detected by the detection module; A base is provided on the roof of the vehicle, the detection module is provided on the base, a walking mechanism for driving the camera to move is provided on the base, and the walking mechanism drives the camera to move position based on the detection signal of the detection module; The walking mechanism includes a walking track and a driving member provided on a base, a walking gear is installed at the output end of the driving member, a walking rack is installed in the walking track, and the walking gear is meshed with the walking rack; The travel rack comprises a starting section fixed to the travel track, and a buffer section slidingly arranged along the track direction of the travel track, and an elastic member is provided between the starting section and the buffer section; During the journey from the buffer section moving away from the starting section to the final return to the initial position and contacting the starting section, the camera is located at the position on the buffer section farthest from the starting section, and the camera is suspended in the air off the top of the vehicle.

2. The monitoring device for an engineering vehicle according to claim 1, characterized in that: The detection module is an infrared scanner installed on the roof of the vehicle. The infrared scanner scans the surroundings of the vehicle through infrared rays to obtain the position information of the detection object within the range of the vehicle.

3. The monitoring device for an engineering vehicle according to claim 1, characterized in that: The detection module is a position sensor arranged on the roof of the vehicle, and the position sensor detects the distance of a detection object close to the vehicle body.

4. The monitoring device for an engineering vehicle according to claim 3, characterized in that: The detection module further includes an acousto-optic generator disposed at a control center, which emits sounds of different sizes and lights of different brightness based on the distance of the detection object from the vehicle body detected by the position sensor.

5. The monitoring device for an engineering vehicle according to claim 1, characterized in that: The detection module is a sound wave generator and a sound wave receiver arranged on the roof of the vehicle. The sound wave generator emits sound waves to detect detection objects around the vehicle body, and the sound wave receiver receives the sound waves rebounded from the detection objects.

6. The monitoring device for an engineering vehicle according to claim 1, characterized in that: The buffer section is provided with a locking mechanism, and when the buffer section is at the farthest distance from the starting section, the locking mechanism locks the buffer section on the walking track.

7. The monitoring device for an engineering vehicle according to claim 1, characterized in that: The walking track has a V-shaped structure, and its two ends correspond to the left front and right front of the vehicle respectively. The number of the buffer sections is two and they are respectively arranged in the two branches of the walking track. The number of the starting sections is two and they are arranged at the intersection of the two branches.

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