Exclusive parking space intelligent occupying system and method based on wireless sensor network

Abstract

The present invention discloses an exclusive parking space intelligent occupying system and method based on a wireless sensor network, wherein the exclusive parking space intelligent occupying system based on a wireless sensor network comprises a host computer server, a wireless sensor network, a wireless signal transceiver module, a license plate camera, a support rod, an MCU control module and a vehicle occupying mechanism. The present invention provides an exclusive parking space intelligent occupying system and method based on a wireless sensor network, which realizes the automatic lifting and lowering control of the exclusive parking space occupying rod, and does not need to use high energy consumption equipment such as motors, thereby effectively solving the power consumption problem of the exclusive parking space intelligent occupying system.

Description

Technical Field

[0001] The invention relates to an exclusive parking space intelligent occupying system and method based on a wireless sensor network, belonging to the field of automatic control of parking space use. Background Art

[0002] At present, with the continuous growth of per capita car ownership in my country, many cities have encountered the problem of parking space shortage. In some cities, the parking space is even only one-third of the number of cars. Under such a severe situation, the problem of "difficult parking" has become increasingly prominent, and the phenomenon of illegal parking and parking space grabbing caused by it is also common. In order to effectively manage exclusive parking spaces, parking space occupation systems came into being. At present, the parking space occupation systems on the market are generally divided into three categories: mechanical, remote control and intelligent.

[0003] Mechanical and remote control parking systems have low automation and are inconvenient for users to operate. The existing intelligent parking system uses intelligent recognition to solve the problem of manual operation and is the current development direction of the exclusive parking space occupation system. However, since it requires the addition of additional drive devices such as motors, it increases the problem of power supply and energy consumption, and also increases the user's cost of use, which does not meet the needs of green environmental protection. Therefore, in order to better meet the needs of convenience, energy saving, and green environmental protection, it is very necessary to design a motor-free exclusive parking space intelligent parking system. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an exclusive parking space intelligent occupying system and method based on a wireless sensor network, which realizes the automatic lifting and lowering control of the exclusive parking space occupying rod without the need to use high-energy consumption equipment such as motors, thereby effectively solving the power consumption problem of the exclusive parking space intelligent occupying system.

[0005] In order to solve the above technical problems, the technical solution of the present invention is:

[0006] On one hand, the present invention provides an exclusive parking space intelligent occupying system based on a wireless sensor network, which includes a host computer server, a wireless sensor network, a wireless signal transceiver module, a license plate camera, a support rod, an MCU control module and a vehicle occupying mechanism;

[0007] The vehicle occupying mechanism is installed below the ground, the MCU control module is arranged in the vehicle occupying mechanism, the MCU control module wirelessly communicates with the wireless signal transceiver module, the wireless signal transceiver module wirelessly communicates with the host computer server through the wireless sensor network, the support rod is fixed on the ground, the license plate camera is fixed on the top of the support rod, the wireless signal transceiver module is fixed on the license plate camera, and the license plate camera is wiredly connected to the wireless signal transceiver module.

[0008] Further, the vehicle space occupying mechanism includes a hollow plastic space occupying rod, a floating block, a space occupying rod sleeve, a drain pipe, a lower water inlet pipe, a water storage tank, an upper water inlet pipe, a connecting water tank, a connecting rod piston, a spring, a pressure sensor and a rear wheel parking pedal;

[0009] The hollow plastic placeholder rod is fixed on the floating block, the placeholder rod sleeve is filled with water, and the floating block drives the hollow plastic placeholder rod to move up and down in the placeholder rod sleeve according to the water level in the placeholder rod sleeve;

[0010] The bottom of the placeholder rod sleeve is connected to one end of the communicating water tank through a drain pipe, a first solenoid valve is arranged on the drain pipe, and a first solenoid valve switch control module for controlling the on and off of the first solenoid valve is arranged on the outer wall of the communicating water tank;

[0011] The bottom of the side wall of the placeholder rod sleeve is connected to the bottom of the water tank through a lower water inlet pipe, a second solenoid valve is arranged on the lower water inlet pipe, a second solenoid valve switch control module for controlling the on and off of the second solenoid valve is arranged on the outer wall of the connecting water tank, and the top of the side wall of the water tank is connected to the connecting water tank through an upper water inlet pipe;

[0012] The other end of the connecting water tank is connected to a slide cylinder, and the connecting rod piston is slidably connected to the slide cylinder. The rear wheel parking pedal is arranged on the top of the connecting rod piston and is located above the ground. The side of the rear wheel parking pedal facing the ground is connected to the ground through a spring, and the pressure sensor is fixed on the side of the rear wheel parking pedal facing the ground.

[0013] Furthermore, the first solenoid valve switch control module, the second solenoid valve switch control module and the pressure sensor are all connected to the MCU control module by wire.

[0014] Furthermore, an upper limiter is provided at the top of the spacer rod sleeve, and a lower limiter is provided at the bottom of the spacer rod sleeve.

[0015] Furthermore, a solar panel is provided on the support rod, and the solar panel is used to power the license plate camera, the wireless signal transceiver module, the first solenoid valve, the first solenoid valve switch control module, the second solenoid valve, the second solenoid valve switch control module and the MCU control module.

[0016] Another aspect of the present invention provides a control method for an exclusive parking space intelligent occupancy system based on a wireless sensor network, which comprises the following steps:

[0017] Step S1, before the exclusive parking space is used, the MCU control module presets the emptying time t1 of the spaceholder sleeve and the emptying time t2 of the water tank, adjusts the shooting angle and orientation of the license plate camera, and waits for the exclusive vehicle to drive in;

[0018] Step S2, when a vehicle enters the effective shooting range of the license plate camera, the license plate camera sends the collected license plate image to the host computer server through the wireless signal transceiver module through the wireless sensor network for comparison and identification; if the comparison with the exclusive vehicle license plate image is not successful, the host computer server does not send back any signal, and the license plate camera continues to shoot; if the comparison with the exclusive vehicle license plate image is successful, the host computer server sends a comparison success signal to the wireless signal transceiver module through the wireless sensor network, and the wireless signal transceiver module sends the signal to the MCU control module, and the MCU control module opens the first solenoid valve by sending an opening instruction to the first solenoid valve switch control module, and the placeholder rod sleeve starts to drain water and drains the water into the connected water tank through the drain pipe; at the same time, the MCU control module starts timing, and when the drainage time of the placeholder rod sleeve reaches t1, the MCU control module closes the first solenoid valve by sending a closing instruction to the first solenoid valve switch control module, and the placeholder rod sleeve stops draining water;

[0019] Step S3, the hollow plastic spacer rod is lowered into the spacer rod sleeve, and the exclusive parking space is opened; the exclusive vehicle is reversed into the garage until the rear wheel parking pedal is pressed down and stops at this position, and the rear wheel parking pedal presses the connecting rod piston into the connected water tank filled with water, and the water of the same volume discharged from the spacer rod sleeve overflows into the water storage tank through the upper water inlet pipe;

[0020] Step S4, when the exclusive vehicle leaves the parking space, the rear wheel parking pedal rises driven by the spring, the pressure of the pressure sensor changes from the maximum value to zero, the MCU control module sends an opening instruction to the second solenoid valve switch control module, opens the second solenoid valve, the water storage tank starts to drain, and the water is discharged into the placeholder rod sleeve through the lower water inlet pipe; at the same time, the MCU control module starts timing, and when the water storage tank drainage time reaches t2, the MCU control module sends a closing instruction to the second solenoid valve switch control module, closes the second solenoid valve, and the water storage tank stops draining;

[0021] Step S5, the water level in the placeholder rod sleeve rises, and the hollow plastic placeholder rod rises to the placeholder height driven by the float block, and the system returns to the initial placeholder state.

[0022] By adopting the above technical solution, the present invention has the following beneficial effects:

[0023] 1. The present invention constructs an exclusive parking space intelligent occupying system that utilizes the gravity of the vehicle body and intelligent recognition technology, conveniently realizes the automatic lifting and lowering control of the exclusive parking space occupying rod, and does not require the use of high-energy consumption equipment such as motors, effectively solving the power consumption problem of the exclusive parking space intelligent occupying system.

[0024] 2. The present invention uses wireless sensor network technology to realize remote automatic identification and monitoring of the exclusive parking space intelligent occupancy system, greatly reducing the cost of human resource utilization.

[0025] 3. The present invention has no high power consumption equipment and can use solar cell technology, meeting the new requirements of green and environmentally friendly sustainable development.

[0026] 4. The present invention constructs a non-powered water circulation system to effectively avoid the waste of water resources, and through cooperation with wireless sensor networks and gravity sensors, it can conveniently realize intelligent control of the exclusive parking space intelligent occupancy system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The figure is an overall device diagram of the exclusive parking space intelligent occupancy system based on wireless sensor network of the present invention;

[0028] Figure 2 A diagram showing the parking process of a vehicle in an exclusive parking space of the present invention;

[0029] Figure 3 This is a control circuit block diagram of the exclusive parking space intelligent occupying device of the present invention;

[0030] Figure 4 This is a flow chart of the control method of the exclusive parking space intelligent occupancy system of the present invention. DETAILED DESCRIPTION

[0031] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0032] Embodiment 1

[0033] like Figure 1 As shown, this embodiment provides an exclusive parking space intelligent occupancy system based on a wireless sensor network, which includes a host computer server 1, a wireless sensor network 2, a wireless signal transceiver module 3, a license plate camera 4, a support rod 6, an MCU control module 25 and a vehicle occupancy mechanism;

[0034] The vehicle occupying mechanism is installed below the ground, the MCU control module 25 is arranged inside the vehicle occupying mechanism, the MCU control module 25 wirelessly communicates with the wireless signal transceiver module 3, the wireless signal transceiver module 3 wirelessly communicates with the host computer server 1 through the wireless sensor network 2, the support rod 6 is fixed on the ground, the license plate camera 4 is fixed to the top of the support rod 6 by bolts, the wireless signal transceiver module 3 is fixed on the license plate camera 4, and the license plate camera 4 is wiredly connected to the wireless signal transceiver module 3.

[0035] like Figure 1 As shown, the vehicle space occupying mechanism of this embodiment includes a hollow plastic space occupying rod 7, a floating block 9, a space occupying rod sleeve 10, a drain pipe 13, a lower water inlet pipe 17, a water storage tank 18, an upper water inlet pipe 19, a connecting water tank 20, a connecting rod piston 21, a spring 22, a pressure sensor 23 and a rear wheel parking pedal 24;

[0036] The hollow plastic placeholder rod 7 is fixed on the floating block 9, and the placeholder rod sleeve 10 is loaded with water. The floating block 9 drives the hollow plastic placeholder rod 7 to move up and down in the placeholder rod sleeve 10 along with the water level in the placeholder rod sleeve 10; an upper limiter 8 is provided at the top of the placeholder rod sleeve 10, and a lower limiter 11 is provided at the bottom of the placeholder rod sleeve 10; the hollow plastic placeholder rod 7 with closed ends is fixed on the floating block 9, and can move up and down according to the rise and fall of the water level in the placeholder rod sleeve 10, so as to complete the occupation and opening of the exclusive parking space. The upper limiter 8 and the lower limiter 11 are used to limit the highest rising position and the lowest falling position of the floating block 9 respectively;

[0037] The bottom of the placeholder rod sleeve 10 is connected to one end of the communicating water tank 20 through a drain pipe 13, a first solenoid valve 12 is arranged on the drain pipe 13, and a first solenoid valve switch control module 14 for controlling the on and off of the first solenoid valve 12 is arranged on the outer wall of the communicating water tank 20;

[0038] The bottom of the side wall of the placeholder rod sleeve 10 is connected to the bottom of the water tank 18 through a lower water inlet pipe 17, a second solenoid valve 15 is provided on the lower water inlet pipe 17, a second solenoid valve switch control module 16 for controlling the on and off of the second solenoid valve 15 is provided on the outer wall of the connecting water tank 20, and the top of the side wall of the water tank 18 is connected to the connecting water tank 20 through an upper water inlet pipe 19;

[0039] The other end of the water tank 20 is connected to a slide cylinder, and the connecting rod piston 21 is slidably connected to the slide cylinder. The rear wheel parking pedal 24 is arranged on the top of the connecting rod piston 21 and is located above the ground. The side of the rear wheel parking pedal 24 facing the ground is connected to the ground through a spring 22. The pressure sensor 23 is fixed to the side of the rear wheel parking pedal 24 facing the ground.

[0040] The first solenoid valve switch control module 14 , the second solenoid valve switch control module 16 and the pressure sensor 23 are all connected to the MCU control module 25 by wire.

[0041] The license plate image of the vehicle is captured by the license plate camera 4, and the wireless signal transceiver module 3 is fixed on the license plate camera 4, and is used to transmit the collected license plate image to the upper computer server 1 through the wireless sensor network 2 for comparison and identification, and then the identification result is fed back to the MCU control module 25 placed above the connecting water tank 20 through the wireless signal transceiver module 3. The MCU control module 25 controls the opening and closing of the first solenoid valve 12 by issuing instructions to the first solenoid valve switch control module 14 which is also placed above the connecting water tank 20.

[0042] like Figure 3As shown, the MCU control module 25 has system control related interface circuits, including a wireless input interface, a wired input interface and a wired output interface, and is wired powered through the solar panel 5. Among them, the MCU control module 25 and the wireless signal transceiver module 3 communicate with each other by wireless communication, and the MCU control module 25 and the pressure sensor 23, the first solenoid valve switch control module 14 and the second solenoid valve switch control module 16 communicate with each other by wired connection. The wireless signal transceiver module 3, the first solenoid valve switch control module 14 and the second solenoid valve switch control module 16 are also wired powered through the solar panel 5.

[0043] like Figure 1 As shown, a solar panel 5 is provided in the middle of the support rod 6 of this embodiment, and the solar panel 5 is used to power the license plate camera 4, the wireless signal transceiver module 3, the first solenoid valve 12, the first solenoid valve switch control module 14, the second solenoid valve 15, the second solenoid valve switch control module 16 and the MCU control module 25.

[0044] The working principle of the present invention is:

[0045] When the exclusive vehicle is identified, the first solenoid valve switch control module 14 receives the opening command issued by the MCU control module 25, the first solenoid valve 12 opens, the water in the placeholder rod sleeve 10 is quickly discharged through the drain pipe 13, and the floating block 9 drives the hollow plastic placeholder rod 7 to drop rapidly. The MCU control module 25 presets the drain time of the water in the placeholder rod sleeve 10. After waiting for the drain time, the MCU control module 25 sends a closing command to the first solenoid valve switch control module 14, and the first solenoid valve 12 is closed. At this time, the connecting water tank 20 has been completely filled.

[0046] When the dedicated vehicle completes the side parking, the rear wheel of the vehicle will press on the rear wheel parking pedal 24. Due to the gravity of the vehicle, the rear wheel parking pedal 24 drives the connecting rod piston 21, the spring 22 and the pressure sensor 23 to press down quickly. The water in the fully filled connecting water tank 20 is pressed into the connecting rod piston 21 to press out the water of the same volume as the original volume in the placeholder rod sleeve 10, and flows into the water storage tank 18 through the upper water inlet pipe 19. The volume of the water storage tank 18 is larger than the volume of the pressed water, and its upper end is close to the horizontal line where the upper limiter 8 is located. At this time, the second solenoid valve 15 is in a closed state.

[0047] When the exclusive vehicle leaves the parking space, the rear wheel parking pedal 24 and the pressure sensor 23 are quickly bounced upward by the spring 22, and the pressure value on the pressure sensor 23 drops rapidly to zero. After the MCU control module 25 obtains the change in the value on the pressure sensor 23 from the maximum value to the extremely rapid drop, it sends an opening command to the second solenoid valve switch control module 16 which is also placed above the connecting water tank 20. The second solenoid valve 15 opens, and the water in the water storage tank 18 flows into the bottom of the placeholder rod sleeve 10 (below the position of the lower limiter 11) through the lower water inlet pipe 17. At this time, the floating block 9 on the lower limiter 11 drives the hollow plastic placeholder rod 7 to start rising. Finally, after the floating block 9 reaches the position of the upper limiter 8, the hollow plastic placeholder rod 7 returns to the original placeholder height, completing the exclusive parking space. The MCU control module 25 presets the time for the water in the water storage tank 18 to be drained. After waiting for the draining time, the MCU control module 25 sends a closing command to the second solenoid valve switch control module 16, and the second solenoid valve 15 is closed.

[0048] like Figure 2 As shown, the whole working process consists of four parts: a. license plate recognition, b. reverse parking, c. parking and pedaling, and d. leaving the parking space. In a. license plate recognition, when the exclusive vehicle 26 enters the recognition range of the license plate camera 4, the exclusive parking space intelligent occupying system starts to work, and the hollow plastic occupying rod 7 starts to drop into the occupying rod sleeve 10 to make the parking space ready for parking. In b. reverse parking, when the hollow plastic occupying rod 7 is completely lowered into the occupying rod sleeve 10, the exclusive vehicle 26 starts to reverse backwards and park sideways into the parking space. In c. parking, the rear wheel of the exclusive vehicle 26 completely presses the rear wheel parking pedal 24 to complete parking. In d. leaving the parking space, after the exclusive vehicle 26 leaves the parking space, the rear wheel parking pedal 24 is lifted by the spring, and the hollow plastic occupying rod 7 rises out of the occupying rod sleeve 10 and returns to the original occupying height, so that other vehicles cannot park in.

[0049] When the upper computer server 1 forwards the information of successful exclusive vehicle identification to the MCU control module 25 in the form of wireless communication through the wireless signal transceiver module 3, the MCU control module 25 immediately sends the instruction to open the first solenoid valve 12 to the first solenoid valve switch control module 14 through wired communication. When the water draining time in the placeholder rod sleeve 10 preset by the MCU control module 25 is reached, the MCU control module 25 immediately sends the instruction to close the first solenoid valve 12 to the first solenoid valve switch control module 14 through wired communication. When the MCU control module 25 collects through a wired connection that the pressure on the pressure sensor 23 changes from a maximum value to zero, the MCU control module 25 immediately sends the instruction to open the second solenoid valve 15 to the second solenoid valve switch control module 16 through wired communication. When the water draining time in the water storage tank 18 preset by the MCU control module 25 is reached, the MCU control module 25 immediately sends the instruction to close the second solenoid valve 15 to the second solenoid valve switch control module 16 through wired communication.

[0050] Embodiment 2

[0051] like Figure 4 As shown, this embodiment provides a control method for an exclusive parking space intelligent occupancy system based on a wireless sensor network, which includes the following steps:

[0052] Step S1, before the exclusive parking space is used, the MCU control module 25 presets the emptying time t1 of the space-occupying rod sleeve 10 and the emptying time t2 of the water storage tank 18, adjusts the shooting angle and orientation of the license plate camera 4, and waits for the exclusive vehicle 26 to enter;

[0053] Step S2, when a vehicle enters the effective shooting range of the license plate camera 4, the license plate camera 4 sends the collected license plate 27 image to the host computer server 1 through the wireless signal transceiver module 3 and the wireless sensor network 2 for comparison and identification; if the comparison with the license plate image of the exclusive vehicle 26 is not successful, the host computer server 1 does not send back any signal, and the license plate camera 4 continues to shoot; if the comparison with the license plate image of the exclusive vehicle 26 is successful, the host computer server 1 sends a comparison success signal to the wireless signal transceiver module 3 through the wireless sensor network 2, and the wireless signal receiver 3 sends the comparison success signal to the wireless signal transceiver module 3 through the wireless sensor network 2. The signal is then sent by the sending module 3 to the MCU control module 25. The MCU control module 25 opens the first solenoid valve 12 by sending an opening instruction to the first solenoid valve switch control module 14. The placeholder rod sleeve 10 starts to drain water and drains the water into the connected water tank 20 through the drain pipe 13. At the same time, the MCU control module 25 starts timing. When the drainage time of the placeholder rod sleeve 10 reaches t1, the MCU control module 25 closes the first solenoid valve 12 by sending a closing instruction to the first solenoid valve switch control module 14. The placeholder rod sleeve 10 stops draining water.

[0054] Step S3, the hollow plastic spacer rod 7 is lowered into the spacer rod sleeve 10, and the exclusive parking space is opened; the exclusive vehicle 26 is reversed into the garage until the rear wheel parking pedal 24 is pressed down and stops at this position, and the rear wheel parking pedal 24 presses the connecting rod piston 21 into the connected water tank 20 which is full of water, and the water of the same volume discharged from the spacer rod sleeve 10 overflows into the water storage tank 18 through the upper water inlet pipe 19;

[0055] Step S4, when the exclusive vehicle 26 leaves the parking space, the rear wheel parking pedal 24 is lifted up by the spring 22, the pressure of the pressure sensor 23 changes from the maximum value to zero, and the MCU control module 25 sends an opening instruction to the second solenoid valve switch control module 16 to open the second solenoid valve 15, and the water storage tank 18 starts to drain water, and the water is discharged into the space-occupying rod sleeve 10 through the lower water inlet pipe 17; at the same time, the MCU control module 25 starts timing, and when the water storage tank 18 drainage time reaches t2, the MCU control module 25 sends a closing instruction to the second solenoid valve switch control module 16 to close the second solenoid valve 15, and the water storage tank 18 stops draining water;

[0056] Step S5, the water level in the placeholder rod sleeve 10 rises, and the hollow plastic placeholder rod 7 rises to the placeholder height driven by the float block 9, and the system returns to the initial placeholder state to prevent other vehicles from entering.

[0057] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An exclusive parking space intelligent occupancy system based on wireless sensor network, characterized by: It includes a host computer server, a wireless sensor network, a wireless signal transceiver module, a license plate camera, a support rod, an MCU control module and a vehicle occupying mechanism; The vehicle occupying mechanism is installed below the ground, the MCU control module is arranged in the vehicle occupying mechanism, the MCU control module communicates wirelessly with the wireless signal transceiver module, the wireless signal transceiver module communicates wirelessly with the host computer server through the wireless sensor network, the support rod is fixed on the ground, the license plate camera is fixed on the top of the support rod, the wireless signal transceiver module is fixed on the license plate camera, and the license plate camera is connected to the wireless signal transceiver module by wire; The vehicle space occupying mechanism includes a hollow plastic space occupying rod, a floating block, a space occupying rod sleeve, a drain pipe, a lower water inlet pipe, a water storage tank, an upper water inlet pipe, a connecting water tank, a connecting rod piston, a spring, a pressure sensor and a rear wheel parking pedal; The hollow plastic placeholder rod is fixed on the floating block, the placeholder rod sleeve is filled with water, and the floating block drives the hollow plastic placeholder rod to move up and down in the placeholder rod sleeve according to the water level in the placeholder rod sleeve; The bottom of the placeholder rod sleeve is connected to one end of the communicating water tank through a drain pipe, a first solenoid valve is arranged on the drain pipe, and a first solenoid valve switch control module for controlling the on and off of the first solenoid valve is arranged on the outer wall of the communicating water tank; The bottom of the side wall of the placeholder rod sleeve is connected to the bottom of the water tank through a lower water inlet pipe, a second solenoid valve is arranged on the lower water inlet pipe, a second solenoid valve switch control module for controlling the on and off of the second solenoid valve is arranged on the outer wall of the connecting water tank, and the top of the side wall of the water tank is connected to the connecting water tank through an upper water inlet pipe; The other end of the connecting water tank is connected to a slide cylinder, the connecting rod piston is slidably connected to the slide cylinder, the rear wheel parking pedal is arranged on the top of the connecting rod piston and is located above the ground, the side of the rear wheel parking pedal facing the ground is connected to the ground through a spring, and the pressure sensor is fixed to the side of the rear wheel parking pedal facing the ground; The first solenoid valve switch control module, the second solenoid valve switch control module and the pressure sensor are all connected to the MCU control module by wire; A solar panel is arranged on the support rod, and the solar panel is used to power the license plate camera, the wireless signal transceiver module, the first solenoid valve, the first solenoid valve switch control module, the second solenoid valve, the second solenoid valve switch control module and the MCU control module.

2. The exclusive parking space intelligent occupying system based on wireless sensor network according to claim 1 is characterized by: An upper limiter is arranged at the top of the spacer rod sleeve, and a lower limiter is arranged at the bottom of the spacer rod sleeve.

3. A control method for an exclusive parking space intelligent occupancy system based on a wireless sensor network as claimed in any one of claims 1 to 2, characterized in that: It includes the following steps: Step S1, before the exclusive parking space is used, the MCU control module presets the emptying time t1 of the spaceholder sleeve and the emptying time t2 of the water tank, adjusts the shooting angle and orientation of the license plate camera, and waits for the exclusive vehicle to drive in; Step S2, when a vehicle enters the effective shooting range of the license plate camera, the license plate camera sends the collected license plate image to the host computer server through the wireless signal transceiver module through the wireless sensor network for comparison and identification; if the comparison with the exclusive vehicle license plate image is not successful, the host computer server does not send back any signal, and the license plate camera continues to shoot; if the comparison with the exclusive vehicle license plate image is successful, the host computer server sends a comparison success signal to the wireless signal transceiver module through the wireless sensor network, and the wireless signal transceiver module sends the signal to the MCU control module, and the MCU control module opens the first solenoid valve by sending an opening instruction to the first solenoid valve switch control module, and the placeholder rod sleeve starts to drain water and drains the water into the connected water tank through the drain pipe; at the same time, the MCU control module starts timing, and when the drainage time of the placeholder rod sleeve reaches t1, the MCU control module closes the first solenoid valve by sending a closing instruction to the first solenoid valve switch control module, and the placeholder rod sleeve stops draining water; Step S3, the hollow plastic spacer rod is lowered into the spacer rod sleeve, and the exclusive parking space is opened; the exclusive vehicle is reversed into the garage until the rear wheel parking pedal is pressed down and stops at this position, and the rear wheel parking pedal presses the connecting rod piston into the connected water tank filled with water, and the water of the same volume discharged from the spacer rod sleeve overflows into the water storage tank through the upper water inlet pipe; Step S4, when the exclusive vehicle leaves the parking space, the rear wheel parking pedal rises driven by the spring, the pressure of the pressure sensor changes from the maximum value to zero, the MCU control module sends an opening instruction to the second solenoid valve switch control module, opens the second solenoid valve, the water storage tank starts to drain, and the water is discharged into the placeholder rod sleeve through the lower water inlet pipe; at the same time, the MCU control module starts timing, and when the water storage tank drainage time reaches t2, the MCU control module sends a closing instruction to the second solenoid valve switch control module, closes the second solenoid valve, and the water storage tank stops draining; Step S5, the water level in the placeholder rod sleeve rises, and the hollow plastic placeholder rod rises to the placeholder height driven by the float block, and the system returns to the initial placeholder state.

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