Abnormality detection device for power supply mat

Abstract

To provide an abnormality detection device for a power supply mat that can detect abnormalities such as curling of the power supply mat.SOLUTION: An abnormality detection device 10 for a power supply mat 1 that detects an abnormality in the power supply mat 1 that supplies power to a mobility 2 includes: a vibration acquisition unit 20 that acquires an amount of vibration of the mobility 2 traveling on the power supply mat 1; and an abnormality determination unit 30 that determines that an abnormality has occurred in the power supply mat 1 when an acquisition value of the vibration acquisition unit 20 within a predetermined time from a time when power supply to the mobility 2 has occurred or within a predetermined distance from a position P3 (power supply position) of the mobility 2 exceeds a threshold.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to an abnormality detection device for a power supply mat. [Background technology]

[0002] Patent Document 1 discloses a power supply mat that supplies power to mobility. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-236540 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the above-mentioned conventional technology, for example, there is a possibility that the edge of the power supply mat may be turned up by wind or the movement of the mobility, or that a foreign object may get caught between the power supply mat and the ground. This may reduce the power supply efficiency of the power supply mat and may cause the mobility running on the power supply mat to lose balance and fall over.

[0005] The present invention has been made in consideration of the above-mentioned problems, and has an object to provide an abnormality detection device for a power supply mat that can detect abnormalities such as turning over of the power supply mat. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the objective, the power supply mat abnormality detection device of the present invention is an abnormality detection device for a power supply mat that detects an abnormality in a power supply mat that supplies power to a mobility, and includes a vibration acquisition unit that acquires the amount of vibration of the mobility running on the power supply mat, and an abnormality determination unit that determines that an abnormality has occurred in the power supply mat when the acquired value of the vibration acquisition unit within a predetermined time period dating back to the time when power was supplied to the mobility or within a predetermined distance from the power supply position of the mobility exceeds a threshold value. Effect of the Invention

[0007] According to the present invention, it is possible to detect abnormalities such as the turning over of the power supply mat based on the vibration of the mobility running on the power supply mat, thereby preventing a decrease in the power supply efficiency of the power supply mat and preventing the mobility running on the power supply mat from losing balance and falling over. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an illustrative diagram of an anomaly detection device for a power supply mat according to an embodiment. [Diagram 2] FIG. 2 is an exemplary block diagram of the mobility and server of the anomaly detection device of the power supply mat of the embodiment. [Diagram 3] FIG. 3 is an exemplary flowchart of the anomaly detection device of the power supply mat according to the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Exemplary embodiments of the present invention are disclosed below. The configurations of the embodiments shown below and the actions and effects brought about by the configurations are merely examples. The present invention can be realized by configurations other than those disclosed in the following embodiments. Furthermore, according to the present invention, it is possible to obtain at least one of the various effects (including derivative effects) obtained by the configurations. Note that in this specification, ordinal numbers are used only to distinguish between parts, members, parts, positions, directions, etc., and do not indicate order or priority.

[0010] [Embodiment] Fig. 1 is an exemplary explanatory diagram of an abnormality detection device 10 of a power supply mat 1 according to an embodiment. As shown in Fig. 1, the abnormality detection device 10 is a device that detects an abnormality, such as a rolled-up end 1a of the power supply mat 1, based on the vibration of a mobility 2 running on the power supply mat 1. When an abnormality, such as a rolled-up, occurs in the power supply mat 1, the abnormality detection device 10 can contact (report) a terminal device 4, such as a manager's smartphone, via a server 3.

[0011] The power supply mat 1 includes, for example, a power supply coil that transmits electromagnetic waves for power transmission, a power supply circuit that supplies power to the power supply coil, a power supply line that connects the power supply coil and the power supply circuit, a mat material (sheet material) that covers the power supply coil, etc. The power supply mat 1 is flexible (bendable, pliable) and can be placed on the ground. The power supply mat 1 is also called a power supply coil member, a power transmission coil member, etc.

[0012] The mobility 2 includes, for example, a power receiving coil (power receiving unit 15 in FIG. 2) that receives electromagnetic waves for power transmission, a battery that charges the power received by the power receiving coil, a charging circuit provided between the power receiving coil and the battery, etc. One example of the mobility 2 is a micropallet (a small delivery robot).

[0013] The mobility 2 is configured to be movable (able to run) on the ground or on the power supply mat 1. In this embodiment, when the mobility 2 is located at position P3 where it has climbed over the end 1a of the power supply mat 1, that is, in an area offset from the end 1a (rolled-up portion) of the power supply mat 1, the battery of the mobility can be charged by power from the power supply mat 1. Position P3 is an example of a power supply position, and is also referred to as a charging position or the like.

[0014] Fig. 2 is an exemplary block diagram of the mobility 2 and the server 3 of the anomaly detection device 10 of the power supply mat 1. As shown in Fig. 2, the mobility 2 has, for example, a power receiving unit 15, a vibration acquiring unit 20, a transmitting / receiving unit 21, and a control device 25. The power receiving unit 15 is the above-mentioned power receiving coil or the like, and the vibration acquiring unit 20 is a vibration sensor or the like. The control device 25 is composed of a CPU (Central Processing Unit) or the like.

[0015] The control device 25 has, for example, a drive control unit 11, a power supply amount recording unit 12, a vibration amount recording unit 13, etc. The drive control unit 11 is a functional block that controls the drive of the mobility 2. Note that in this embodiment, the drive control unit 11, the power supply amount recording unit 12, and the vibration amount recording unit 13 are realized by cooperation between software and hardware, but may be realized at least partially by hardware.

[0016] The power supply amount recording unit 12 is a functional block that records the amount of power supply of the mobility 2. The amount of power supply of the mobility 2 received by the power receiving unit 15 is input to the power supply amount recording unit 12. The data (power supply record) recorded in the power supply amount recording unit 12 can be transmitted to the server 3 via the transmission / reception unit 21.

[0017] The vibration amount recording unit 13 is a functional block that records the vibration amount of the mobility 2. The vibration amount of the mobility 2 acquired by the vibration acquisition unit 20 is input to the vibration amount recording unit 13. The data (vibration record) recorded in the vibration amount recording unit 13 can be transmitted to the server 3 via the transmission / reception unit 21.

[0018] The server 3 has, for example, a transmission / reception unit 31 and a control device 35. The control device 35 is configured with a CPU (Central Processing Unit) and the like, and has, for example, an abnormality determination unit 30 and the like. The abnormality determination unit 30 is a functional block that determines whether or not an abnormality such as rolling up has occurred in the power supply mat 1.

[0019] Here, in this embodiment, as shown in Figure 1, when an abnormality such as rolling up occurs in the power supply mat 1, it can be seen that the power receiving unit 15 cannot effectively capture the electromagnetic waves from the power supply mat 1 at position P2 where the mobility 2 passes over the end portion 1a (the rolled up portion), and the amount of power supply is small.

[0020] Specifically, the amount of power supplied at position P2 of mobility 2 is the same as the amount of power supplied when mobility 2 is at position P1 on the ground before passing over end 1a, and is smaller than the amount of power supplied when mobility 2 is at position P3, which is the power supply position on the power supply mat 1, after passing over end 1a.

[0021] Also, as shown in Figure 1, the amount of vibration at position P2 of mobility 2 is greater than the amount of vibration at position P1 and the amount of vibration at position P3 of mobility 2, and it can be seen that the amount of power supply increases after this predetermined amount of vibration occurs.

[0022] Therefore, in this embodiment, the abnormality determination unit 30 is configured to determine that an abnormality such as rolling up has occurred in the power supply mat 1 when the acquired value of the vibration acquisition unit 20 exceeds a threshold value within a predetermined time prior to the time when power supply to the mobility 2 occurred or within a predetermined distance from position P3 as the power supply position of the mobility 2.

[0023] The threshold value of the vibration amount of the mobility 2 can be set to, for example, a value between the peaks of the vibration amount at positions P1 and P3 and the peak of the vibration amount at position P2. The result of the abnormality determination unit 30 determining whether the sheet is turned up or not can be transmitted to a terminal device 4 such as a smartphone of an administrator via a transmitting / receiving unit 31 shown in FIG.

[0024] Fig. 3 is an exemplary flowchart of the anomaly detection device 10 of the power supply mat 1. As shown in Fig. 3, first, the anomaly detection device 10 determines whether or not a predetermined time has elapsed since the previous transmission timing of the power supply record and the vibration record of the mobility 2 to the server 3 (step S100).

[0025] If the predetermined time has not elapsed since the previous transmission (No in step S100), the abnormality detection device 10 ends the series of controls. On the other hand, if the predetermined time has elapsed since the previous transmission (Yes in step S100), the abnormality detection device 10 transmits the latest power supply record and vibration record of the mobility 2 to the server 3 (step S102).

[0026] Next, the abnormality detection device 10 determines whether or not the server 3 has received the latest power supply record and vibration record of the mobility 2 (step S104). If the server 3 has not received the latest power supply record and vibration record (No in step S104), the abnormality detection device 10 ends the series of controls.

[0027] On the other hand, if the server 3 has received the latest power supply record and vibration record (Yes in step S104), the abnormality detection device 10 determines whether the power supply mat 1 is turned over or not from the latest power supply record and vibration record (step S106), and proceeds to step S108.

[0028] If it is determined that there is no abnormality such as rolling up in the power supply mat 1 (No in step S108), the abnormality detection device 10 ends the series of controls. On the other hand, if it is determined that there is an abnormality such as rolling up in the power supply mat 1 (Yes in step S108), the abnormality detection device 10 contacts the administrator (step S110). Then, the abnormality detection device 10 ends the series of controls.

[0029] In this way, according to this embodiment, the abnormality detection device 10 can notify the manager of an abnormality such as a rolled-up portion of the power supply mat 1. This allows the manager to go and fix the rolled-up portion of the power supply mat 1, or control the driving of the mobility 2 so that the mobility 2 does not pass over the rolled-up power supply mat 1. The abnormality detection device 10 may also specify position information of the rolled-up portion of the power supply mat 1. In this case, the mobility 2 detects the approximate position of the rolled-up portion.

[0030] Furthermore, in this embodiment, the abnormality detection device 10 determines in step S100 whether a predetermined time has elapsed since the timing of transmitting the previous power supply record and vibration record of the mobility 2 to the server 3, but is not limited to this example. For example, the abnormality detection device 10 may determine in step S100 whether a predetermined time has elapsed since the timing when the previous vibration amount of the mobility 2 exceeded a threshold, or may determine whether a predetermined time has elapsed since the previous power supply to the mobility 2 occurred.

[0031] In addition, in this embodiment, the abnormality detection device 10 determines whether or not the power supply mat 1 is turned over, etc., from the power supply record and vibration record of one mobility 2 in step S106, but is not limited to this example, and may determine whether or not the power supply mat 1 is turned over, etc., from the power supply record and vibration record of multiple mobility 2. In this case, for example, if the vibration amount commonly exceeds a threshold value for multiple mobility 2, it can be determined that there is an abnormality in the power supply mat 1, such as turning over.

[0032] As described above, in this embodiment, the abnormality detection device 10 of the power supply mat 1 detects an abnormality in the power supply mat 1 that supplies power to the mobility 2, and includes a vibration acquisition unit 20 that acquires the vibration amount of the mobility 2 running on the power supply mat 1, and an abnormality determination unit 30 that determines that an abnormality has occurred in the power supply mat 1 when the acquired value of the vibration acquisition unit 20 within a predetermined time prior to the time when power supply to the mobility 2 occurred or within a predetermined distance from the position P3 (power supply position) of the mobility 2 exceeds a threshold value.

[0033] According to this configuration, it is possible to detect abnormalities such as the rolling up of the power supply mat 1 based on the vibration of the mobility 2 running on the power supply mat 1. This makes it possible to prevent the power supply efficiency of the power supply mat 1 from decreasing, and the mobility 2 running on the power supply mat 1 from losing balance and falling over.

[0034] Although the embodiment of the present invention has been illustrated above, the above embodiment is merely an example and is not intended to limit the scope of the invention. The above embodiment can be implemented in various other forms, and various omissions, substitutions, combinations, and modifications can be made without departing from the gist of the invention. In addition, the specifications of each configuration, shape, and the like (structure, type, direction, format, size, length, width, thickness, height, number, arrangement, position, material, etc.) can be appropriately changed and implemented. [Explanation of symbols]

[0035] 1. Power supply mat 2. Mobility 3. Server 10...Anomaly detection device 20…Vibration acquisition section 30...Abnormality determination section P3…Position (power supply position)

Claims

[Claim 1] A power supply mat abnormality detection device that detects an abnormality in a power supply mat that supplies power to a mobility, a vibration acquisition unit that acquires a vibration amount of the mobility running on the power supply mat; an abnormality determination unit that determines that an abnormality has occurred in the power supply mat when an acquired value of the vibration acquisition unit within a predetermined time period going back from the time when power supply to the mobility occurred or within a predetermined distance from a power supply position of the mobility exceeds a threshold value; The abnormality detection device for the power supply mat is provided.

Images