Parking management system

Abstract

To provide a parking management system capable of smoothly executing switching parking in which a second reserved vehicle enters a parking lot immediately after a first reserved vehicle has left the parking lot.SOLUTION: A parking management system 10 includes a parking lock member 13 configured to be changeable between a raised state and a lowered state, a parking controller 30, a parking sensor 20 that detects the presence or absence of a vehicle V in a parking space Pp, and an approach sensor 22 that detects the approach of the vehicle V to the parking space Pp. The parking controller 30 is configured to maintain the parking lock member 13 in the lowered state when it predicts that switching parking will occur, even after a first reserved vehicle Vf has left the parking space, and to predict that the switching parking will occur when the approach of a second reserved vehicle Vs is detected during the period in which the first reserved vehicle Vf is parked in the parking space Pp.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention discloses a parking management system for managing the parking state of vehicles in a parking space.

Background Art

[0002] Conventionally, many technologies for managing the parking state of vehicles in a parking space have been proposed. For example, Patent Document 1 discloses a technology for managing the parking state by controlling the raising and lowering of a flap plate installed in a parking space. In Patent Document 1, when a vehicle parking in the parking space is detected, the flap plate is raised, and when the fee related to the parking is settled, the flap plate is lowered. According to such a technology, an unspecified number of users can use the parking space without reservation.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, it is conceivable to make the use of the parking space a reservation system. In the case of a reservation system, in order to prevent parking of vehicles other than the reserved vehicle, it is necessary to raise a parking lock member such as a flap plate during the period when the parking space is empty. Therefore, in the case of a reservation system, usually, when the reserved vehicle departs from the parking space, the parking lock member is immediately raised.

[0005] However, in this case, if a next reserved vehicle (hereinafter referred to as "second reserved vehicle") tries to enter immediately after one reserved vehicle (hereinafter referred to as "first reserved vehicle") departs, the raised parking lock member may get in the way, and there is a possibility that the second reserved vehicle cannot smoothly enter the parking space.

[0006] Therefore, the present specification discloses a parking management system capable of smoothly executing switching parking in which a second reserved vehicle enters immediately after a first reserved vehicle exits.

Means for Solving the Problems

[0007] The parking management system disclosed in the present specification includes a parking lock member provided in a parking space, the parking lock member being configured to be changeable between a raised state that inhibits entry of a vehicle and a lowered state that permits entry of the vehicle, a parking controller configured to manage reservation of use of the parking space and control state change of the parking lock member, a parking sensor configured to detect the presence or absence of the vehicle in the parking space, and a proximity sensor configured to detect approach of the vehicle to the parking space. The parking controller is configured to maintain the parking lock member in the lowered state even after the first reserved vehicle exits, when it is predicted that switching parking will occur in which the second reserved vehicle enters the parking space immediately after the first reserved vehicle exits from the parking space, and to predict that the switching parking will occur when the proximity of the second reserved vehicle is detected by the proximity sensor during a period in which it is detected by the parking sensor that the first reserved vehicle is parked in the parking space.

[0008] In this case, the parking controller may be configured to change the parking lock member to the raised state when the vehicle exits from the parking space, when it is not predicted that the switching parking will occur.

[0009] In addition, the parking management system further includes a parking lock unit. The parking lock unit includes the parking lock member, a vehicle sensor for detecting the presence or absence of the vehicle in the parking space, and a unit controller configured to control the state of the parking lock member based on a request input via an API. The parking controller, when predicting the occurrence of switching parking, transmits a lowering maintenance request to the unit controller via the API. The unit controller maintains the parking lock member in the lowered state even after the vehicle sensor detects the departure of the vehicle from the parking space during the period when the lowering maintenance request is valid. During the period when the lowering maintenance request is cancelled, if the vehicle sensor detects the departure of the vehicle from the parking space, the parking lock member is changed from the lowered state to the raised state. It may be configured as such.

[0010] In addition, after outputting the lowering maintenance request, if the departure of the first reserved vehicle is not confirmed even after exceeding the available time of the first reserved vehicle, the parking controller may cancel the lowering maintenance request.

[0011] In addition, the proximity sensor detects that the vehicle has passed a specified detection point. The detection point is a position where the travel time of the vehicle from the detection point to the parking space is equal to or longer than the transition time required for the parking lock member to change from the raised state to the lowered state. The parking controller may be configured to start changing the parking lock member to the lowered state at the timing when the proximity sensor detects the approach of the vehicle when no other vehicle is parked in the parking space.

Advantages of the Invention

[0012] According to the parking management system disclosed in this specification, switching parking can be smoothly executed.

Brief Description of the Drawings

[0013]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Embodiments for Carrying Out the Invention

[0014] Hereinafter, the configuration of the parking management system 10 will be described with reference to the drawings. FIG. 1 is a schematic diagram showing the configuration of the parking management system 10. The parking management system 10 manages the parking state of a vehicle V in a predetermined parking space Pp. When a user wants to use the parking space Pp, the user makes a reservation for the parking space Pp in advance through an information terminal. Note that in FIG. 1, only one parking space Pp is illustrated, but there may be a plurality of parking spaces Pp. At the time of making a reservation for use, the user notifies the parking controller 30, which will be described later, of the identification information of the parking space Pp that the user wants to use and the time zone that the user wants to use.

[0015] The parking space Pp is provided with a parking lock unit 12. The parking lock unit 12 is a general-purpose product for switching the availability of the parking space Pp. Such a parking lock unit 12 has a vertically movable parking lock member 13. The parking lock member 13 is in the shape of an arm or a flap plate fixed to the ground. Also, the parking lock member 13 can be changed between a raised state rising from the ground and a lowered state lying along the ground. In the raised state, the upper end of the parking lock member 13 is sufficiently higher than the floor height of a general vehicle V. Therefore, when the parking lock member 13 is in the raised state, the entry of the vehicle V into the parking space Pp is inhibited. Also, in the lowered state, the upper end of the parking lock member 13 is sufficiently lower than the floor height of a general vehicle V. Therefore, when the parking lock member 13 is in the lowered state, the entry of the vehicle V into the parking space Pp becomes possible. The parking lock unit 12 switches the raising and lowering of the parking lock member 13 based on a request input via an API (application programming interface), thereby switching the availability of the vehicle V to park in the parking space Pp.

[0016] The parking lock unit 12 further has a communication I / F 14, a unit controller 16, a unit actuator 18, and a vehicle sensor 19. The unit actuator 18 raises and lowers the parking lock member 13 and is an actuator that can be electrically controlled. Such a unit actuator 18 includes, for example, a motor, a hydraulic cylinder, or an electromagnetic cylinder as a power source.

[0017] The vehicle sensor 19 detects the presence or absence of the vehicle V in the parking space Pp. For example, the vehicle sensor 19 may be an ultrasonic sensor that detects the presence or absence of an object above the parking lock unit 12, a camera that images the parking space Pp, or a load sensor that detects the load acting on the parking space Pp. The detection result of the vehicle sensor 19 is output to the unit controller 16. As described above, the parking lock unit 12 is a general-purpose product, and it is also a product assumed to be used in a parking facility that does not have the parking sensor 20 described later. The vehicle sensor 19 is provided to appropriately operate the parking lock unit 12 even in a parking facility without the parking sensor 20.

[0018] The communication I / F 14 transmits and receives data to and from the parking controller 30. The specific form of the communication I / F 14 is not particularly limited as long as it can appropriately transmit and receive data. Therefore, the communication I / F 14 may transmit and receive data via a communication cable, or may have an antenna that transmits and receives wireless signals.

[0019] The unit controller 16 controls the drive of the unit actuator 18. Such a unit controller 16 is physically a computer having a processor and a memory. A control program for the unit actuator 18 is installed in the memory of the unit controller 16. This control program provides an API that receives requests from the outside, executes processing according to the requests, and returns the processing results to the outside.

[0020] When the control program for the unit actuator 18 has not received a request for exception processing, at the timing when the detection result by the vehicle sensor 19 switches from "vehicle V present" to "vehicle V absent", that is, at the timing when the departure of the vehicle V is detected, the parking lock unit 12 is changed from the lowered state to the raised state. In addition, the control program for the unit actuator 18 receives at least a lowering request, a raising request, a lowering maintenance request, and a status notification request.

[0021] The lowering request is a request to change the parking lock unit 12 from the raised state to the lowered state. The raising request is a request to change the parking lock unit 12 from the lowered state to the raised state. The lowering maintenance request is a request to maintain the parking lock unit 12 in the lowered state even when the departure of the vehicle V is detected. The status notification request is a request to notify the source of the request of the state of the parking lock unit 12, that is, whether it is in the lowered state, the raised state, or the transition state. The transition state is a state in which the parking lock unit 12 is transitioning from the lowered state to the raised state or from the raised state to the lowered state. The unit controller 16 drives the unit actuator 18 in accordance with the request received from the outside.

[0022] The parking management system 10 further includes a parking sensor 20, a proximity sensor 22, and a parking controller 30. The parking sensor 20 detects the parking status of the vehicle V in the parking space Pp. The parking sensor 20 is, for example, a camera that images the parking space Pp. The parking controller 30 identifies the presence or absence of the vehicle V in the parking space Pp and the identification information of the parked vehicle V based on the image acquired by the parking sensor 20. The identification information of the vehicle V is, for example, the vehicle number indicated on the license plate of the vehicle V. The parking controller 30 collates the identified identification information of the vehicle V with the reservation information.

[0023] The proximity sensor 22 detects the approach of the vehicle V to the parking space Pp of the vehicle V. The proximity sensor 22 is, for example, a camera that images the vehicle V passing through a predetermined detection point Pd. The detection point Pd is provided on the path from the entrance 110 of the parking facility toward the parking space Pp. Further, the detection point Pd is set in consideration of the transition time Tc required for the parking lock member 13 to transition from the raised state to the lowered state. Specifically, the detection point Pd is a point such that the assumed travel time Tm when the vehicle V moves from the detection point Pd to the parking space Pp is equal to or greater than the transition time Tc. That is, when the travel distance from the detection point Pd to the parking space Pp is L and the assumed speed of the vehicle V is S, the detection point Pd is a point that satisfies L / S≧Tc. A plurality of such detection points Pd, and thus proximity sensors 22, may be provided. The parking controller 30 identifies the presence or absence of the vehicle V approaching the parking space Pp and the identification information of the approaching vehicle V based on the image acquired by the proximity sensor 22. Then, the parking controller 30 outputs a lowering request to the parking lock unit 12 at the timing when the reserved vehicle Vr is detected at the detection point Pd. Thereby, when the reserved vehicle Vr reaches the parking space Pp, the parking lock member 13 is completely changed to the lowered state, and the reserved vehicle Vr can smoothly enter the parking space Pp.

[0024] The parking controller 30 accepts a reservation for the use of the parking space Pp and controls the state of the parking lock member 13. Such a parking controller 30 is physically a computer having a communication I / F 32, a processor 34, and a memory 36. In FIG. 1, the parking controller 30 is illustrated as a single computer, but the parking controller 30 may be configured by combining a plurality of physically separated computers.

[0025] The communication I / F 32 transmits and receives data with the parking lock unit 12 and an external communication terminal 200. Such communication I / F 32 may transmit and receive data via a communication cable, or may have an antenna for transmitting and receiving radio signals. Note that the communication terminal 200 is a terminal operated by the user, such as a smartphone or a personal computer. By the user operating the communication terminal 200, information regarding the reservation of the use of the parking space Pp is transmitted to the parking controller 30.

[0026] The parking controller 30 manages the reservation of the use of the parking space Pp based on the reservation application transmitted from the communication terminal 200. That is, the parking controller 30 stores, as reservation information, the identification information of the parking space Pp, the identification information of the reserved vehicle Vr, and the use time zone, in association with each other. The parking controller 30 compares this reservation information with the identification information of the vehicle V detected by the parking sensor 20 and the proximity sensor 22, and controls the operation of the parking lock member 13. Further, the parking controller 30 determines the parking status of the vehicle V from the detection results of the sensors 20 and 22, and also executes a charging process according to the parking status.

[0027] Next, the flow of the operation control of the parking lock member 13 in such a parking management system 10 will be described. FIG. 2 is a flowchart showing the flow of the operation control of the parking lock member 13. When the vehicle V is not parked in the parking space Pp, in principle, the parking lock member 13 is in the raised state (S10). By the parking lock member 13 being in the raised state, it is possible to prevent a vehicle other than the reserved vehicle Vr from parking in the parking space Pp.

[0028] The parking controller 30 determines whether or not the reserved vehicle Vr has approached based on the image received from the proximity sensor 22 (S12). Here, the reserved vehicle Vr is a vehicle in which the current time is included in the available time zone of the reserved vehicle Vr. Therefore, even if the use of the parking space Pp has been reserved, a vehicle that has reserved the use in a time zone completely different from the current time does not correspond to the "reserved vehicle Vr" in step S12.

[0029] In addition, the "available time zone" is a time zone with a buffer time of 0 or more added before and after the reserved usage time zone. For example, when reserving the usage in the time zone from 13:00 to 14:00, the available time zone is the time zone from the time when going back by the first buffer time from 13:00 to the time when advancing by the second buffer time from 14:00. The buffer time is not particularly limited as long as it is 0 or more, but is usually selected between 0 and 15 minutes. Also, the first buffer time and the second buffer time may be the same or different from each other. Therefore, when the buffer time is greater than 0, the available time zone of one reserved vehicle Vr may overlap with the available time zones of other reserved vehicles.

[0030] When the approach of the reserved vehicle Vr is detected (Yes in S12), the parking controller 30 transmits a lowering request to the unit controller 16 (S14). Thereby, the unit controller 16 changes the parking lock member 13 from the raised state to the lowered state.

[0031] After transmitting the lowering request, the parking controller 30 confirms whether the reserved vehicle Vr has entered the parking space Pp based on the image received from the parking sensor 20 (S16). If the entry of the reserved vehicle Vr cannot be confirmed within a predetermined allowable time (Yes in S18), the parking controller 30 determines that the reserved vehicle Vr has moved to another location and transmits a raising request to the unit controller 16 (S20). Thereby, it is possible to prevent a vehicle other than the reserved vehicle Vr from parking illegally in the parking space Pp.

[0032] On the one hand, if the parking of the reserved vehicle Vr is detected within the allowable time (Yes in S16), the parking controller 30 checks whether the reserved vehicle Vr has left the parking space Pp based on the image received from the parking sensor 20 (S22). Then, when the parking controller 30 confirms that the reserved vehicle Vr has left (Yes in S22), it executes charging processing or the like as necessary. Also, when the vehicle sensor 19 mounted on the parking lock unit 12 detects the departure of the reserved vehicle Vr, the unit controller 16 changes the parking lock member 13 from the lowered state to the raised state (S24). Thereafter, the same process is repeatedly executed.

[0033] Figure 3 is a graph showing an example of the change over time in the position of the reserved vehicle Vr and the state of the parking lock member 13. In Figure 3, the upper part shows the position of the reserved vehicle Vr, and the lower part shows the state of the parking lock member 13.

[0034] In the example of Figure 3, the reserved vehicle Vr passes through the detection point Pd at time t1. The parking controller 30 sends a lowering request to the unit controller 16 at this timing. As a result, the parking lock member 13 changes from the raised state to the lowered state. Here, the transition time Tc required for this change is shorter than the movement time Tm for the reserved vehicle Vr to move from the detection point Pd to the parking space Pp. Therefore, at the time t2 when the reserved vehicle Vr reaches the parking space Pp, the parking lock member 13 has completely changed to the lowered state. As a result, the reserved vehicle Vr can smoothly enter the parking space Pp without worrying about the parking lock member 13.

[0035] Thereafter, at time t3, the reserved vehicle Vr leaves the parking space Pp. When the vehicle sensor 19 of the parking lock unit 12 detects this departure, the unit controller 16 automatically changes the parking lock member 13 from the lowered state to the raised state. As a result, it is effectively prevented that an unrelated vehicle V that is not reserved enters the parking space Pp.

[0036] Incidentally, depending on the reservation status, switching parking may occur where immediately after one vehicle V departs, the next vehicle V enters the warehouse. In this case, if the state of the parking lock member 13 is sequentially switched, there is a risk that the next vehicle V may not be able to enter the warehouse smoothly. This will be described with reference to FIG. 4. FIG. 4 is a diagram showing the positions of the vehicles and the state of the parking lock unit 12 when the second reserved vehicle Vs enters the warehouse immediately after the departure of the first reserved vehicle Vf.

[0037] In the upper part of FIG. 4, the solid line indicates the position of the first reserved vehicle Vf, and the dashed line indicates the position of the second reserved vehicle Vs. In the example of FIG. 4, the second reserved vehicle Vs passes through the detection point Pd at time t1. At this time, the first reserved vehicle Vf is still in the parking space Pp. Thereafter, at time t2, the first reserved vehicle Vf departs from the parking space Pp, and at time t3, the second reserved vehicle Vs enters the parking space Pp.

[0038] At this time, according to the operation flow of FIG. 2, as shown by the two-dot chain line in the lower part of FIG. 4, at time t2 when the first reserved vehicle Vf departs, the parking lock unit 12 changes from the lowered state to the raised state. In this case, when the second reserved vehicle Vs reaches the parking space Pp, since the parking lock unit 12 has not completely descended, the second reserved vehicle Vs will not be able to smoothly enter the parking space Pp.

[0039] Therefore, in this example, when the approach of the second reserved vehicle Vs is detected during the period when the parking of the first reserved vehicle Vf is detected, the parking controller 30 predicts that switching parking will occur. And when the parking controller 30 predicts the occurrence of switching parking, it sends a descent maintenance request to the unit controller 16. The unit controller 16 keeps the parking lock member 13 in the lowered state even after the departure is detected by receiving the descent maintenance request.

[0040] In the case of the example of FIG. 4, the time t1 when the approach of the second reserved vehicle Vs is detected is during the parking period of the first reserved vehicle Vf and within the available time zone of the second reserved vehicle Vs. In this case, at time t1, the parking controller 30 transmits a descent maintenance request to the unit controller 16. As a result, as shown by the solid line in the lower part of FIG. 4, even after the time t2 when the first reserved vehicle Vf departs, the parking lock unit 12 remains in the lowered state. And thereby, at time t3, the second reserved vehicle Vs can smoothly enter the parking space Pp. If the entry of the second reserved vehicle Vs can be confirmed, the parking controller 30 transmits a cancellation of the descent maintenance request to the unit controller 16.

[0041] FIG. 5 is a flowchart showing the flow of operation control of the parking lock member 13 in switching parking. As shown in FIG. 5, when the approach of the second reserved vehicle Vs is detected, if the first reserved vehicle Vf is parked in the parking space Pp (Yes in S30 and Yes in S32), the parking controller 30 transmits a descent maintenance request to the unit controller 16 (S34). Thereafter, the parking controller 30 monitors whether the first reserved vehicle Vf has departed (S36). And if the first reserved vehicle Vf has departed (Yes in S36), the parking controller 30 then monitors whether the second reserved vehicle Vs has entered (S42). If the second reserved vehicle Vs has entered within the allowable time (Yes in S42), the parking controller 30 cancels the descent maintenance request (S48).

[0042] On the other hand, if the first reserved vehicle Vf still does not leave the warehouse even after exceeding the available time period of the first reserved vehicle Vf (Yes in S38), the parking controller 30 cancels the descent maintenance request (S40). That is, when the first reserved vehicle Vf continues to park beyond the available time period, the departure time cannot be predicted, and it can be determined that switching parking by the first reserved vehicle Vf and the second reserved vehicle Vs does not occur. Therefore, in this case, the parking controller 30 cancels the descent maintenance request. In this case, for the second reserved vehicle Vs, alternative services such as canceling the reservation or changing to another parking space Pp are provided according to the wishes of the user of the second reserved vehicle Vs. Also, after the first reserved vehicle Vf has left the warehouse, if the entry of the second reserved vehicle Vs cannot be confirmed within a predetermined allowable time (Yes in S44), the parking controller 30 sends an ascent request to the unit controller 16 (S46).

[0043] Incidentally, in the example of FIG. 4, the approach of the second reserved vehicle Vs is detected during the parking period of the first reserved vehicle Vf. However, as shown in FIG. 6, there may be a case where the approach of the second reserved vehicle Vs is detected immediately after the first reserved vehicle Vf has left the warehouse. In the example of FIG. 6, the first reserved vehicle Vf leaves the warehouse at time t1, and the second reserved vehicle Vs passes through the detection point Pd at time t2. In this case, the unit controller 16 starts the ascent of the parking lock unit 12 at time t1 when the departure of the first reserved vehicle Vf is detected. On the other hand, the parking controller 30 sends a descent request to the unit controller 16 at time t2 when the approach of the second reserved vehicle Vs is detected.

[0044] Here, the unit controller 16 in this example is designed not to accept new requests regarding lifting and lowering during the transition period when the parking lock member 13 is moving up and down. Therefore, even if the parking controller 30 sends a lowering request at time t2, it will result in an error. Thus, when the lowering request results in an error, the parking controller 30 periodically sends a status notification request to the unit controller 16 to check the status of the parking lock member 13. And when the parking lock member 13 is in the raised state, the parking controller 30 sends a lowering request to the unit controller 16 again.

[0045] In the case of Fig. 6, the parking controller 30 sends a lowering request to the unit controller 16 at time t3 when the parking lock unit 12 is in the raised state. As a result, after the parking lock unit 12 completes the ascent, it immediately starts to lower. And thereby, the second reserved vehicle Vs can enter the parking space Pp without waiting or with a short waiting time.

[0046] As is clear from the above description, according to the operation control of Fig. 5, when switching parking occurs, unnecessary lifting and lowering of the parking lock member 13 can be suppressed, so that the second reserved vehicle Vs can smoothly enter the parking space Pp. Also, as shown in Fig. 6, when the lowering request results in an error, the parking controller 30 in this example outputs a lowering request again after the movement of the parking lock unit 12 stops. Thereby, the waiting time of the second reserved vehicle Vs can be eliminated or minimized. Also, as is clear from the above description, in this example, a general-purpose lock unit having an API function is used as the parking lock unit 12. Therefore, there is no need to redesign the detailed control regarding the lifting and lowering of the parking lock member 13 (for example, speed control of the unit actuator 18, etc.), and the time required to construct the parking management system 10 can be reduced.

[0047] Note that all the configurations described so far are just examples. As long as the configuration described in claim 1 is provided, other configurations may be changed. For example, in the above description, a general-purpose parking lock unit 12 is used, and the parking controller 30 indirectly controls the operation of the parking lock member 13 via an API. However, the parking controller 30 may directly control the parking lock member 13. In this case, the unit controller 16 and the vehicle sensor 19 are removed, and the parking controller 30 directly controls the unit actuator 18. Also, the parking sensor 20 and the proximity sensor 22 are not limited to cameras and may have other configurations. For example, the parking sensor 20 and the proximity sensor 22 may be a communication I / F for vehicle-to-vehicle communication with the vehicle V.

Description of Reference Numerals

[0048] 10 Parking management system, 12 Parking lock unit, 13 Parking lock member, 14 Communication I / F, 16 Unit controller, 18 Unit actuator, 19 Vehicle sensor, 20 Parking sensor, 22 Proximity sensor, 30 Parking controller, 32 Communication I / F, 34 Processor, 36 Memory, 110 Entrance, 200 Communication terminal, Pd Detection point, Pp Parking space, V Vehicle, Vf First reserved vehicle, Vs Second reserved vehicle.

Claims

1. A parking lock member provided in a parking space, configured to be changeable between a raised state that inhibits entry of a vehicle and a lowered state that permits entry of the vehicle; A parking controller configured to manage reservation of use of the parking space and control state change of the parking lock member; A parking sensor configured to detect the presence or absence of the vehicle in the parking space; A proximity sensor configured to detect approach of the vehicle to the parking space; Comprising: The parking controller If it is predicted that switching parking occurs in which a second reserved vehicle enters the parking space immediately after a first reserved vehicle exits the parking space, after the first reserved vehicle exits, the parking lock member is maintained in the lowered state; If the approach of the second reserved vehicle is detected by the proximity sensor during the period in which the parking sensor detects that the first reserved vehicle is parked in the parking space, it is predicted that switching parking occurs. A parking management system configured as described above.

2. The parking management system according to claim 1, wherein The parking controller is configured to change the parking lock member to the raised state when the vehicle exits the parking space if it is not predicted that switching parking occurs.

3. The parking management system according to claim 2, further comprising A parking lock unit, wherein The parking lock unit The parking lock member; A vehicle sensor configured to detect the presence or absence of the vehicle in the parking space; A unit controller configured to control the state of the parking lock member based on a request input via an API; Having When it is predicted that switching parking occurs, the parking controller transmits a descent maintenance request to the unit controller via an API. The unit controller During the period in which the descent maintenance request is valid, after the vehicle sensor detects that the vehicle exits the parking space, the parking lock member is maintained in the lowered state. If the vehicle sensor detects that the vehicle exits the parking space during the period in which the descent maintenance request is released, the parking lock member is changed from the lowered state to the raised state. A parking management system configured as described above. **Claim 4** The parking management system according to claim 3, wherein after outputting the lowering maintenance request, if the departure of the first reserved vehicle is not confirmed even after the available time of the first reserved vehicle has passed, the parking controller is configured to cancel the lowering maintenance request. **Claim 5** The parking management system according to any one of claims 1 to 4, wherein the proximity sensor detects that the vehicle has passed a specified detection point, the detection point is a position where the travel time of the vehicle from the detection point to the parking space is equal to or greater than the transition time required for the parking lock member to change from the raised state to the lowered state, and when no other vehicle is parked in the parking space, the parking controller is configured to start changing the parking lock member to the lowered state at the timing when the proximity sensor detects the approach of the vehicle. A parking management system.

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