Sensor signal feedback method for a tailgate

Abstract

The application relates to the technical field of automobile tailboard control, and discloses a sensor signal feedback method of an automobile tailboard, which specifically comprises the following steps: S11: a vehicle-mounted system sends a control signal of automobile tailboard action and an action type of the control signal, and an automobile tailboard executes the acquired signal and the action type; S12: when the automobile tailboard executes the signal and the action type, a built-in sensor is triggered, and the built-in sensor sends a stop signal to the vehicle-mounted system; S13: the vehicle-mounted system sends the control signal and the action type of the control signal to the automobile tailboard again, and the automobile tailboard executes the corresponding signal and action type again. According to the application, the state of the tailboard system is known through cooperation of the built-in sensor and the external sensor, after the control signal of the automobile tailboard action, the sensor can quickly identify and feed back the signal after the action of the automobile tailboard, so that damage of the equipment caused by too much moving distance of the automobile tailboard or too large extrusion force from the outside world is avoided.

Description

Technical Field

[0001] This invention relates to the technical field of automobile tailgate control, and more specifically, to a sensor signal feedback method for automobile tailgates. Background Technology

[0002] In recent years, with the rapid development of my country's logistics and transportation industry, the application of vehicle tailgates has become increasingly widespread. The use of vehicle tailgates has greatly improved loading and unloading efficiency and significantly saved manpower and costs, thus making them an essential piece of equipment for modern logistics and transportation.

[0003] Traditional crane tailgate hydraulic systems include a lifting cylinder, a booster cylinder, and a tilting cylinder. The tailgate uses the booster cylinder in the hydraulic system to automatically lower itself when it contacts the ground and automatically raise itself before it leaves the ground. Alternatively, it can be observed directly with the naked eye. Detecting whether the tailgate has reached the ground by checking the pressure of the booster cylinder or by direct visual observation has low accuracy and can easily damage the hydraulic cylinder. Summary of the Invention

[0004] The purpose of this invention is to provide a sensor signal feedback method for a car tailgate. After the control signal for the action of the car tailgate is received, the sensor can quickly identify and provide signal feedback after the tailgate is in motion. This aims to solve the problem that the accuracy of detection and judgment in the prior art, which relies on detecting the pressure of the boost cylinder to determine whether the tailgate has descended to touch the ground, whether it has tilted down to touch the ground, or direct visual observation, is low.

[0005] This invention is implemented as follows: a sensor signal feedback method for a car tailgate, specifically including the following steps:

[0006] S11: The vehicle system sends the control signal for the operation of the vehicle tailgate and the type of operation of the control signal, and the vehicle tailgate executes the acquired signal and type of operation;

[0007] S12: When the vehicle tailgate executes a signal and action type, it triggers the built-in sensor, which then sends a stop signal to the vehicle system.

[0008] S13: The vehicle system sends the control signal and the action type of the control signal to the tailgate again, and the tailgate executes the corresponding signal and action type again.

[0009] S14: The control signal for the vehicle tailgate action is completed when the external sensor is triggered and sends a stop signal to the vehicle system.

[0010] Furthermore, the vehicle tailgate includes a tailgate beam, a fixed-length rod is connected to one side of the tailgate beam, a lifting cylinder is connected to one side of the fixed-length rod, a tilting cylinder is provided on one side of the lifting cylinder, the ends of the fixed-length rod and the tilting cylinder are both connected to the tailgate surface, the end of the lifting cylinder is connected to the fixed-length rod, and a reinforcing column is provided between the fixed-length rods, the reinforcing column realizing the synchronous rotation of the fixed-length rods.

[0011] Furthermore, the built-in sensors include built-in sensor D, built-in sensor β, and built-in sensor A, all of which are installed inside the tilting cylinder. A fixed end is provided on one side of the tilting cylinder, and the fixed end is installed on the tail plate beam.

[0012] Furthermore, a DD' section is provided inside the tilting cylinder, which triggers a feedback signal from the built-in sensor D. A β'β section and a ββ” section are provided on one side of the DD' section, which trigger a feedback signal from the built-in sensor β. An A'A section is provided on one side of the ββ” section, which triggers a feedback signal from the built-in sensor A.

[0013] Furthermore, a first connecting lug is provided on both sides of the tailgate beam, and a first hinge hole is provided at the lower part of the first connecting lug. One end of the lifting cylinder is hinged to the tailgate beam through the first hinge hole, and the other end of the lifting cylinder is hinged to the fixed length rod through the fourth hinge hole.

[0014] Furthermore, a third hinge hole is provided on the upper part of the first connecting ear, one end of the fixed length rod is hinged to the tail plate beam through the third hinge hole, and the other end of the fixed length rod is hinged to the tail plate surface through the sixth hinge hole.

[0015] Furthermore, one end of the tilting cylinder is hinged to the tail plate beam through the second hinge hole, and the other end of the tilting cylinder is hinged to the tail plate surface through the fifth hinge hole.

[0016] Furthermore, the external sensor includes external sensor B and external sensor C, with external sensor B disposed below the sixth hinge hole and external sensor C disposed below the fifth hinge hole.

[0017] Furthermore, after a trigger signal is received, the built-in sensors will send back signals A1, β1, and D1 to the vehicle system; if no trigger signal is received, they will send back signals A0, β0, and D0 to the vehicle system.

[0018] Furthermore, after the external sensor is triggered, it will send back B1 and C1 signals to the vehicle system; if it is not triggered, it will send back B0 and C0 signals to the vehicle system.

[0019] Compared with existing technologies ，The sensor signal feedback method for a car tailgate provided by this invention has the following features:

[0020] Beneficial effects:

[0021] 1. The system obtains the status of the tailgate system by working together with built-in and external sensors. After the tailgate moves, the sensors can quickly identify and provide feedback, thus avoiding damage to the equipment caused by excessive movement of the tailgate or excessive external pressure. Furthermore, the different treatment of built-in and external sensors is more reasonable and reliable.

[0022] 2. By setting multiple trigger areas in the built-in sensors, when the piston inside the tilting cylinder moves to the trigger area, the corresponding sensor provides continuous signal feedback until the piston moves out of the trigger area, at which point the corresponding sensor stops the signal feedback, thereby achieving precise output of the car tailgate movement. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the vehicle tailgate in the sensor signal feedback method for the vehicle tailgate proposed in this invention;

[0024] Figure 2 This is a schematic diagram of the outer connection of the vehicle tailgate in the sensor signal feedback method for the vehicle tailgate proposed in this invention.

[0025] Figure 3 for Figure 2 Enlarged structural diagram of region X in the middle;

[0026] Figure 4 This is a schematic diagram of the inner connection of the vehicle tailgate in the sensor signal feedback method for the vehicle tailgate proposed in this invention.

[0027] Figure 5 for Figure 4 Enlarged structural diagram of the Y region in the middle;

[0028] Figure 6 This is a schematic diagram illustrating the signal feedback principle of the sensor signal feedback method for the tailgate of a car proposed in this invention.

[0029] Figure 7 This is a schematic diagram of the sensor signal feedback method for the tailgate of a car proposed in this invention in state a;

[0030] Figure 8 This is a schematic diagram of the sensor signal feedback method for the tailgate of a car proposed in this invention in state b.

[0031] Figure 9 This is a schematic diagram of the sensor signal feedback method for the tailgate of a car proposed in this invention in state c.

[0032] Figure 10 This is a schematic diagram of the sensor signal feedback method for the tailgate of a car proposed in this invention in state d.

[0033] In the diagram: 1-Tailplate beam, 2-Fixed length rod, 3-Lifting cylinder, 4-Tilting cylinder, 5-Tailplate surface, 6-Reinforcing column, 11-First hinge hole, 12-Second hinge hole, 13-Third hinge hole, 14-Fourth hinge hole, 15-Fifth hinge hole, 16-Sixth hinge hole, A-Built-in sensor A, B-External sensor B, C-External sensor C, D-Built-in sensor D, β-Built-in sensor β. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0035] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0036] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this invention. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0037] Reference Figure 1-10 As shown, the sensor signal feedback method for the tailgate of a car specifically includes the following steps:

[0038] S11: The vehicle system sends the control signal for the operation of the vehicle tailgate and the type of operation of the control signal, and the vehicle tailgate executes the acquired signal and type of operation;

[0039] S12: When the vehicle tailgate executes the signal and action type, it triggers the built-in sensor, which sends a stop signal to the vehicle system. The built-in sensor includes built-in sensor D, built-in sensor β, and built-in sensor A, all of which are installed in the tilting cylinder. A fixed end is provided on one side of the tilting cylinder and is installed on the tailgate beam.

[0040] S13: The vehicle system sends the control signal and the action type of the control signal to the tailgate again, and the tailgate executes the corresponding signal and action type again.

[0041] S14: Until the external sensor is triggered and sends a stop signal to the vehicle system, the external sensor includes external sensor B and external sensor C. External sensor B is located on the lower side of the sixth hinge hole 16, and external sensor C is located on the lower side of the fifth hinge hole 15. After the control signal for the tailgate action is executed, the state of the tailgate system is known through the cooperation of the built-in and external sensors. After the control signal for the tailgate action is given, the sensors can quickly identify and provide signal feedback after the tailgate action, thereby avoiding damage to the equipment caused by excessive movement distance of the tailgate or excessive external pressure. Furthermore, the differentiated treatment of the built-in and external sensors is more reasonable and reliable.

[0042] In this embodiment, the vehicle tailgate includes a tailgate beam 1. A fixed-length rod 2 is connected to one side of the tailgate beam 1. A lifting cylinder 3 is connected to one side of the fixed-length rod 2. A tilting cylinder 4 is provided on one side of the lifting cylinder 3. The ends of the fixed-length rod 2 and the tilting cylinder 4 are both connected to the tailgate surface 5. The end of the lifting cylinder 3 is connected to the fixed-length rod 2. A reinforcing column 6 is provided between the fixed-length rods 2. The reinforcing column 6 enables the fixed-length rods 2 to rotate synchronously, so that the lifting cylinder 3 acts on the fixed-length rod 2 and the tilting cylinder 4 acts on the tailgate surface 5.

[0043] In this embodiment, a DD' section is provided inside the tilting cylinder 4. The DD' section triggers a feedback signal from the built-in sensor D. A β'β section and a ββ” section are provided on one side of the DD' section. The β'β section and the ββ” section trigger a feedback signal from the built-in sensor β. An A'A section is provided on one side of the ββ” section. The A'A section triggers a feedback signal from the built-in sensor A. By providing multiple triggering areas in the built-in sensors, when the piston inside the tilting cylinder moves to the triggering area, the corresponding sensor provides continuous signal feedback until the piston moves out of the triggering area, at which point the corresponding sensor provides a stop signal feedback, thereby achieving precise output of the car tailgate movement.

[0044] In this embodiment, a first connecting lug is provided on both sides of the tailboard beam 1. A first hinge hole 11 is provided at the lower part of the first connecting lug. One end of the lifting cylinder 3 is hinged to the tailboard beam 1 through the first hinge hole 11, and the other end of the lifting cylinder 3 is hinged to the fixed length rod 2 through the fourth hinge hole 14. A third hinge hole 13 is provided at the upper part of the first connecting lug. One end of the fixed length rod 2 is hinged to the tailboard beam 1 through the third hinge hole 13, and the other end of the fixed length rod 2 is hinged to the tailboard plate surface 5 through the sixth hinge hole 16. One end of the tilting cylinder 4 is hinged to the tailboard beam 1 through the second hinge hole 12, and the other end of the tilting cylinder 4 is hinged to the tailboard plate surface 5 through the fifth hinge hole 15.

[0045] In this embodiment, the built-in sensors will all send back signals A1, β1, and D1 to the vehicle system after the trigger signal is triggered, and will send back signals A0, β0, and D0 to the vehicle system if no trigger is triggered. The external sensors will all send back signals B1 and C1 to the vehicle system after the trigger signal is triggered, and will send back signals B0 and C0 to the vehicle system if no trigger is triggered.

[0046] Reference Figure 7-10 The state transitions of the vehicle tailgate in four phases: state a, state b, state c, and state d. Table 1 shows the feedback signals obtained by the cooperation of built-in and external sensors to determine the state of the tailgate system.

[0047] Table 1: Signal Feedback from Vehicle Tailgate Sensors

[0048]

[0049] As shown in Table 1, the signal feedback results of the tailgate in the four states "a", "b", "c", and "d" and the three processes "ab", "bc", and "cd" are different. The vehicle system can identify the position and state of the tailgate through the seven signal combinations of A, B, β, C, and D, and then control it.

[0050] The tailgate is divided into four states: "a", "b", "c", and "d", and three processes: "ab (including ba and below, all are the same)", "bc", and "cd".

[0051] In state a, an internal sensor A is installed inside the tilting cylinder 4 at the corresponding length of the cylinder body. When the tilting cylinder 4 reaches this length, sensor A feeds back a signal A1; otherwise, it feeds back A0. This length is also the longest length of the tilting cylinder.

[0052] When the tail plate 5 is in the horizontal range, an internal sensor β is provided inside the tilting cylinder 4 at the length corresponding to the cylinder body. When the tilting cylinder reaches this length, the sensor β feeds back a signal β1; otherwise, it feeds back β0.

[0053] When the front end of the tail plate 5 is in contact with the bottom surface, an internal sensor D is provided inside the tilting cylinder 4 at the length corresponding to the cylinder body. When the tilting cylinder reaches this length, the sensor D provides a feedback signal D1; otherwise, it provides feedback D0. This length is also the shortest length of the tilting cylinder 4.

[0054] An external sensor B is installed on the fixed length rod 2, and a lower external switch C is installed below the hinge hole 15 at the lower end of the tailboard 5. When the tailboard moves close to the rear of the car, it will trigger the sensor B to give feedback signal B1, otherwise it will give feedback B0. When the rear end of the tailboard contacts the bottom surface, it will trigger the sensor C to give feedback signal C1, otherwise it will give feedback C0.

[0055] Reference Figure 6This is a schematic diagram of the sensor triggering range inside the tilting cylinder 4. Position D is the length position of the tilting cylinder when the tail plate is in the "d" state. When the tail plate is moving "cd" and is about to reach the "d" state, the telescopic end of the tilting cylinder is at position D', which triggers sensor D to give feedback signal D1. Sensor D always gives feedback signal D1 until the telescopic end of the tilting cylinder moves to position D. Similarly, sensor A always gives feedback signal A1 when the telescopic end of the tilting cylinder 4 moves to position A'-A.

[0056] When the tailplate is in state "b", the tipping cylinder extension end is at position β in the figure. There are trigger intervals on both the left and right sides of this position. During the process of the tipping cylinder extension end running to position β'-β", the sensor β always feeds back signal β1. When the tailplate performs the action "ab", the tipping cylinder extension end first passes through β” and then reaches β. When performing the action "dc", it first passes through β' and then reaches β.

[0057] Similarly, external sensors B and C also trigger signals in advance just before the tailgate is about to contact the rear and bottom of the vehicle body, and provide feedback within the corresponding small interval. This design of triggering the sensor in advance at a specific position can give the moving mechanism a deceleration and braking process to avoid excessive impact during sudden stops. Since this trigger interval is small and negligible relative to the entire movement process, the interval can be regarded as a specific point in the reset control logic. By setting multiple trigger areas in the built-in sensor, when the piston inside the tilting cylinder moves to the trigger area, the corresponding sensor provides continuous signal feedback until the piston moves out of the trigger area, at which point the corresponding sensor provides a stop signal feedback, thereby achieving precise output of the car tailgate movement.

[0058] This technical solution uses a combination of built-in and external sensors to determine the status of the tailgate system. After receiving the control signal for the tailgate's movement, the sensors can quickly identify and provide feedback, thus preventing damage to the equipment caused by excessive tailgate movement or excessive external pressure. Furthermore, the differentiated treatment of built-in and external sensors is more reasonable and reliable.

[0059] In this embodiment, the entire operation process can be controlled by a computer, along with a PLC, to achieve automated operation control. In each operation stage, sensors can be set up to provide signal feedback and ensure that the steps are performed sequentially. These are all conventional knowledge in current automation control, and will not be elaborated on in this embodiment.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sensor signal feedback method for a car tailgate, characterized in that, Specifically, the following steps are included: S11: The vehicle system sends a control signal for the operation of the vehicle tailgate and the type of action of the control signal, and the vehicle tailgate executes the acquired signal and type of action; the vehicle tailgate includes a tailgate beam, a fixed-length rod is connected to one side of the tailgate beam, a lifting cylinder is connected to one side of the fixed-length rod, a tilting cylinder is provided on one side of the lifting cylinder, the ends of the fixed-length rod and the tilting cylinder are both connected to the tailgate surface, the end of the lifting cylinder is connected to the fixed-length rod, and a reinforcing column is provided between the fixed-length rods, the reinforcing column realizes the synchronous rotation of the fixed-length rods; S12: When the vehicle tailgate executes a signal and action type, the built-in sensors are triggered, and the built-in sensors send a stop signal to the vehicle system. The built-in sensors include built-in sensor D, built-in sensor β, and built-in sensor A, all of which are housed within a tilting cylinder. A fixed end is provided on one side of the tilting cylinder, and the fixed end is mounted on the tailgate beam. A DD' section is provided within the tilting cylinder, which triggers a feedback signal from the built-in sensor D. A β'β section and a ββ'' section are provided on one side of the DD' section, which trigger a feedback signal from the built-in sensor β. An A'A section is provided on one side of the ββ' section. 'Part A triggers the built-in sensor A feedback signal; both sides of the tailgate beam are provided with first connecting ears, and a first hinge hole is provided at the lower part of the first connecting ear. One end of the lifting cylinder is hinged to the tailgate beam through the first hinge hole, and the other end of the lifting cylinder is hinged to the fixed length rod through the fourth hinge hole. A third hinge hole is provided at the upper part of the first connecting ear. One end of the fixed length rod is hinged to the tailgate beam through the third hinge hole, and the other end of the fixed length rod is hinged to the tailgate plate surface through the sixth hinge hole. One end of the tilting cylinder is hinged to the tailgate beam through the second hinge hole, and the other end of the tilting cylinder is hinged to the tailgate plate surface through the fifth hinge hole.' S13: The vehicle system sends the control signal and the action type of the control signal to the tailgate again, and the tailgate executes the corresponding signal and action type again. S14: The control signal for the movement of the vehicle tailgate is completed when the external sensor is triggered and sends a stop signal to the vehicle system; the external sensor includes external sensor B and external sensor C, external sensor B is located on the lower side of the sixth hinge hole, and external sensor C is located on the lower side of the fifth hinge hole.

2. The sensor signal feedback method for a vehicle tailgate as described in claim 1, characterized in that, The built-in sensor A sends an A1 signal to the vehicle system after a trigger signal, and sends an A0 signal to the vehicle system if no trigger signal is received; the built-in sensor β sends a β1 signal to the vehicle system after a trigger signal, and sends a β0 signal to the vehicle system if no trigger signal is received; the built-in sensor D sends a D1 signal to the vehicle system after a trigger signal, and sends a D0 signal to the vehicle system if no trigger signal is received.

3. The sensor signal feedback method for a vehicle tailgate as described in claim 2, characterized in that, The external sensor B sends a B1 signal to the vehicle system after a trigger signal, and sends a B0 signal to the vehicle system if no trigger signal is received; the external sensor C sends a C1 signal to the vehicle system after a trigger signal is received, and sends a C0 signal to the vehicle system if no trigger signal is received.

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