JP2017050052A - Electrostatic shoe determination device and entrance management system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrostatic shoe determination device for which it is not necessary to touch with a hand.SOLUTION: An electrostatic shoe determination device 1 comprises a control device 10, a conductive plate 20, an insulation plate 21, a pressure sensor 30, a first relay 40, a second relay 50, LEDs 61 and 62 and a buzzer 63. The conductive plate 20 includes two first and second conductive plates 20a and 20b. A toe side of an electrostatic shoe S is placed on the first conductive plate 20a, and a heel side of the electrostatic shoe S is placed on the second conductive plate 20b. When the placement of the electrostatic shoe S is sensed by the pressure sensor 30, the first relay 40 is turned to an ON state, and a current flows from the second conductive plate 20b to the first conductive plate 20a via the electrostatic shoe S. At such a time, a voltage value is measured based on a resistance value of the electrostatic shoe S by the control device 10, and it is determined whether the voltage value is a normal value. Thus, it can be determined whether the electrostatic shoe S placed on the conductive plates 20a and 20b has a proper antistatic performance.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an electrostatic shoe determination device and an entrance management system that determine whether or not the antistatic performance of an electrostatic shoe for preventing electrostatic discharge from a human body is appropriate.

  In a factory that manufactures semiconductor devices, when an electrostatically charged object exists in the vicinity of the production line, the semiconductor device is destroyed by electrostatic discharge (ESD) generated between the electrostatically charged objects. There is. In factories that handle various solvents, explosions and fires may occur due to static electricity. In order to prevent this, for example, in such a factory, a clean room is provided which is shut off from the external environment by walls and doors and strictly manages workers entering and leaving the room, and in this, the semiconductor device is installed. Manufactures and handles various solvents. When entering such a clean room, in order to prevent electrostatic discharge due to static electricity charged on the human body, wearing a wrist strap that prevents static electricity and wearing static shoes with special processing on the sole Is required.

  Conventionally, for example, a wireless inspection device that inspects an operator on a work table is known in order to inspect whether or not an operator in a clean room is wearing the wrist strap correctly (see, for example, Patent Document 1). .) This wireless inspection device is provided with a leakage circuit in the wrist strap in order to inspect whether or not an operator on the production line is correctly wearing the wrist strap, and the resistance value of the wrist strap is measured to be a normal value. If the value is not normal, an alarm signal is generated.

  In addition, for example, a clean room entry management device is known in order to determine whether or not the electrical resistance value of an electrostatic shoe of an operator entering a clean room is within a predetermined range (for example, Patent Document 2). reference.). This clean room entry management device is an electrostatic shoe evaluation device that evaluates the electrical resistance value of an electrostatic shoe, and when the electrostatic shoe evaluation device evaluates that the electrical resistance value of the electrostatic shoe is not within a predetermined range. Has a clean room entrance management mechanism that locks the door in the clean room. This electrostatic shoe evaluation apparatus has a main electrode that a room occupant touches by hand and a counter electrode on which the electrostatic shoe is placed, and measures a resistance value between the human body and the floor surface through the electrostatic shoe. Is.

JP 2009-163495 A JP 2001-029105 A

  By the way, in the wireless inspection apparatus described in the above-mentioned Patent Document 1, since it is used to inspect whether or not the wrist strap is correctly attached on a predetermined work table, the apparatus cannot be used as an apparatus for inspecting workers entering the room. It is. Further, the clean room entrance management device described in Patent Document 2 cannot be evaluated correctly when a baggage is held. Furthermore, both devices are devices that allow a weak current to flow through the human body, and thus cannot be used by workers using medical devices such as pacemakers.

  Then, an object of this invention is to provide the electrostatic shoe determination apparatus which does not need to contact by hand like the clean room entrance management apparatus of the said patent document 2. FIG.

  In order to solve the above-mentioned problems, the invention according to claim 1 is an electrostatic shoe determination device for determining whether or not the antistatic performance of an electrostatic shoe for preventing discharge of static electricity charged on a human body is appropriate. A first conductive plate for placing the toe side of the electrostatic shoe, and a second conductive plate disposed adjacent to the first conductive plate for placing the heel side of the electrostatic shoe. The conductive plate, the first conductive plate and the second conductive plate are placed, and the first conductive plate and the second conductive plate are electrically insulated, and the insulating plate, A pressure sensor for sensing that the electrostatic shoe is placed on the first conductive plate and the second conductive plate; and when the pressure sensor senses placement of the electrostatic shoe, A current is passed between the conductive plate and the second conductive plate, and it is determined whether or not the voltage value measured based on the resistance value of the electrostatic shoe is a normal value. And the resistance value determination unit, characterized by comprising a.

  In the present invention, pressure sensors are provided on the first conductive plate and the second conductive plate, and it is detected that the electrostatic shoes are placed on the first conductive plate and the second conductive plate. When sensing that the electrostatic shoe is placed, the resistance value determination unit causes a current to flow between the first conductive plate and the second conductive plate, and calculates a voltage value based on the resistance value of the electrostatic shoe. Measure and determine whether the voltage value is normal.

  According to a second aspect of the present invention, in the electrostatic shoe determination device according to the first aspect, a gap is provided between the first conductive plate and the second conductive plate, and the electrostatic shoe Is placed on the first conductive plate and the second conductive plate so as to straddle the gap.

  According to a third aspect of the present invention, in the electrostatic shoe determination device according to any one of the first or second aspects, when the resistance value determination unit determines that the voltage value is a normal value, It has a discharge part for discharging static electricity charged to the wearer of the electrostatic shoes.

  According to a fourth aspect of the present invention, in the electrostatic shoe determination device according to the third aspect, when the pressure sensor senses the placement of the electrostatic shoe, the first conductive plate and the second conductive plate. A first relay that switches so that a predetermined current flows through the plate and the electrostatic shoe, and when the resistance value determination unit determines that the voltage value is a normal value, the first conductive plate, The second conductive plate, and a second relay that switches from a conduction state of the electrostatic shoe to the electrostatic discharge state by the discharge unit.

  According to a fifth aspect of the present invention, in the electrostatic shoe determination device according to any one of the first to fourth aspects, when the resistance value determination unit determines that the voltage value is not a normal value, A warning unit for generating an alarm signal is provided.

  The invention according to claim 6 is the electrostatic shoe determination device according to any one of claims 1 to 5, wherein the resistance value determination unit determines that the voltage value is a normal value. A display unit that displays that the voltage value is not a normal value when the resistance value determination unit determines that the voltage value is not a normal value is displayed. To do.

  According to a seventh aspect of the invention, when the electrostatic shoe determination device according to any one of the first to sixth aspects and the resistance value determination unit determine that the voltage value is a normal value, An entry management device that permits entry into the room and rejects entry into the room when the resistance value determination unit determines that the voltage value is not a normal value. It is a management system.

  According to the first aspect of the present invention, a current is passed through the electrostatic shoes placed on the first conductive plate and the second conductive plate, a voltage value is measured based on the resistance value of the electrostatic shoes, Since it is determined whether or not the voltage value is a normal value, the wearer of the electrostatic shoe can determine the electrostatic shoe without bringing the hand into contact with the device. Moreover, since an electric current is supplied only to an electrostatic shoe and an electric current does not flow to a wearer's human body, even a wearer using medical equipment such as a pacemaker can be used.

  According to the invention described in claim 2, since the electrostatic shoe is placed so as to straddle the gap provided between the first conductive plate and the second conductive plate, the resistance value of the electrostatic shoe. Can be accurately reflected in the voltage value.

  According to the third aspect of the present invention, when the voltage value is determined to be a normal value, the human body is provided with a discharge unit that discharges static electricity charged to the wearer of the electrostatic shoe. It is possible to prevent electrostatic discharge due to charged static electricity.

  According to the fourth aspect of the present invention, when the pressure sensor senses the placement of the electrostatic shoe, the first conductive plate, the second conductive plate, and the electrostatic shoe are switched so that a predetermined current flows. By providing the first relay, it is possible to prevent a wasteful current from flowing when the electrostatic shoe is not placed, and based on the resistance value of the electrostatic shoe when the electrostatic shoe is placed. The voltage value can be easily measured. In addition, when it is determined that the voltage value is a normal value, the first conductive plate, the second conductive plate, and the second relay that switches from the conductive state of the electrostatic shoe to the electrostatic discharge state by the discharge unit. By providing, it can discharge easily after determining electrostatic shoes.

  According to the invention described in claim 5, when the voltage value is determined not to be a normal value, a clean room for a person who does not properly wear electrostatic shoes is provided by providing a warning unit that generates an alarm signal. It is possible to prevent entry into a room.

  According to the invention of claim 6, when it is determined that the voltage value is a normal value, the normal value is displayed, and when it is determined that the voltage value is not a normal value, it is normal. By including a display unit for displaying that the value is not a correct value, it is possible to easily grasp the determination result of the electrostatic shoe.

  According to the invention of claim 7, when it is determined that the voltage value is a normal value, entry into the room is permitted, and when it is determined that the voltage value is not a normal value, By providing the room management device that refuses to enter the room, it is possible to reliably prevent a person who does not properly wear the electrostatic shoes from entering the clean room or the like.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the electrostatic shoe determination apparatus 1 which concerns on Embodiment 1 of this invention, and is the circuit diagram (a) which shows the schematic structure of the electrostatic shoe determination apparatus 1, and the perspective view which shows the electroconductive plates 20a and 20b. b). It is a side view which shows the flow of the electric current in the electrically conductive plates 20a and 20b of FIG. It is a flowchart which shows control of the shoemaking determination apparatus 1 in the control apparatus 10 of FIG. It is a perspective view which shows the schematic structure of the entrance management system 100 which concerns on Embodiment 2 of this invention.

  The present invention will be described below based on the illustrated embodiments.

(Embodiment 1)
An electrostatic shoe determination device 1 according to Embodiment 1 of the present invention is a device that determines whether or not the antistatic performance of an electrostatic shoe is appropriate. Mainly, the circuit diagram of FIG. As shown in the perspective view of b), the control device (resistance value determination unit) 10, the conductive plate (first conductive plate, second conductive plate) 20, the insulating plate 21, the pressure sensor 30, the first 1 relay 40, second relay 50, LEDs (display units) 61 and 62, buzzer (alarm unit) 63, current limiting resistor 71, protection circuit 72, and voltage measuring resistor 73. ing.

  The control device 10 is a device for program-controlling the entire electrostatic shoe determination device 1, and is configured by, for example, a CPU (Central Processing Unit).

  The conductive plate 20 is a device for placing the electrostatic shoe S and causing a current to flow through the electrostatic shoe S, and is formed of, for example, a conductive metal plate. As shown in FIG. 1B, the conductive plate 20 has a conductive plate (first conductive plate) 20a for placing the toe side of the electrostatic shoe S and a heel side of the electrostatic shoe S. And a conductive plate (second conductive plate) 20b for placement, and provided adjacent to each other. The insulating plate 21 is a plate-like member for electrically insulating the conductive plate 20a and the conductive plate 20b, and is placed with a gap provided between the conductive plate 20a and the conductive plate 20b. The insulating plate 21 is made of, for example, a nonconductive synthetic resin.

  As shown in FIG. 1A, the electrostatic shoe S is placed on the conductive plate 20a and the conductive plate 20b so as to straddle the gap. As shown in FIG. 2, a current I flows between the conductive plate 20a and the conductive plate 20b from the conductive plate 20b through the electrostatic shoe S to the conductive plate 20a. When the current I is conducted, the control device 10 measures a voltage applied to a voltage measuring resistor 73, which will be described later, based on the resistance value of the electrostatic shoe S, and whether or not the voltage value is a normal value. It is determined whether or not the antistatic performance of the electrostatic shoe S placed on the conductive plates 20a and 20b is appropriate.

  The conductive plates 20a and 20b have electrostatic shoe placement portions 22a and 22b, respectively. The electrostatic shoe placement portions 22a and 22b are places for placing the electrostatic shoe S, and are formed in a flat shape in accordance with the shape of the shoe sole of the electrostatic shoe S as shown in FIG. Has been. The electrostatic shoe placement part 22a is a place for placing the toe side of the electrostatic shoe S, and the electrostatic shoe placement part 22b is a place for placing the heel side of the electrostatic shoe S, Each of them is formed so as to straddle the gap provided between the conductive plate 20a and the conductive plate 20b.

  The pressure sensor 30 is a device for sensing the weight of the wearer wearing the electrostatic shoe S when the electrostatic shoe S is placed on the electrostatic shoe placement portions 22a and 22b. It is connected to the mounting portions 22a and 22b. The pressure sensor 30 is connected to the control device 10 and transmits a sensing signal to the control device 10 when the placement of the electrostatic shoe S is sensed.

  The first relay 40 is a device for turning on / off the current from the power source P under the control of the control device 10, has a switch 41 for turning on / off the current, and is connected to the control device 10 and the power source P. It is connected. In the first relay 40, when the pressure sensor 30 senses the placement of the electrostatic shoe S and transmits a sensing signal to the control device 10, the switch 41 is turned on by the control device 10 so that a current flows. It is configured.

  The second relay 50 is a device for turning on / off the current from the power source P via the first relay 40 under the control of the control device 10 and connecting to the ground from the conductive plate 20. The relay 40 and the conductive plate 20 are connected. The second relay 50 includes a second relay 50a connected to the conductive plate 20a and a second relay 50b connected to the conductive plate 20b. The second relay 50 is connected to the switches 51a and 51b and the ground (discharge unit). ) 52a and 52b. The switches 51a and 51b are turned on when the switch 41 is turned on, and are turned off when the determination result of the voltage value by the control device 10 is a normal value, to the ground 52a and 52b. To connect. The grounds 52a and 52b are grounds for discharging static electricity charged to the wearer wearing the electrostatic shoes S placed on the conductive plates 20a and 20b.

  The LED 61 is a light emitting diode that is lit in blue, for example, under the control of the control device 10 when the determination result of the voltage value by the control device 10 is a normal value, and is connected to the control device 10. The LED 62 is a light emitting diode that is lit red, for example, under the control of the control device 10 when the determination result of the voltage value by the control device 10 is not a normal value, and is connected to the control device 10. As shown in FIG. 1B, the LEDs 61 and 62 are provided, for example, at the front end of the conductive plate 20a. The buzzer 63 is a device that generates an alarm signal under the control of the control device 10 when it is determined that the determination result of the voltage value by the control device 10 is not a normal value, and is connected to the control device 10.

  The current limiting resistor 71 is a resistor for setting the output voltage from the power source P to a predetermined value when the switches 41, 51a, 51b are in the on state. The protection circuit 72 is a circuit for preventing overcurrent and overvoltage. The voltage measuring resistor 73 is a circuit for the control device 10 to measure a voltage value based on the resistance value of the electrostatic shoe S.

The voltage value of the voltage measuring resistor 73 based on the resistance value of the electrostatic shoe S by the control device 10 is determined as follows, for example. For example, the output voltage of the power source P is set to 5 V, the resistance value of the current limiting resistor 71 is set to 1 kΩ, and the resistance value of the voltage measuring resistor 73 is set to 5 MΩ. The resistance value of the electrostatic shoe S is determined to be a normal value within a range of 100 kΩ to 100 MΩ, for example. When the resistance value of the electrostatic shoe S is 100 kΩ, which is the minimum value, the voltage measuring resistor 73 includes:
5000 ÷ (1 + 5000 + 100) × 5≈4.901V
When the maximum voltage of 100 MΩ is applied, the voltage measuring resistor 73 has
5000 ÷ (1 + 5000 + 100000) × 5 ≒ 0.238V
Is applied. Therefore, the control device 10 determines that the voltage measurement resistor 73 has a normal value if the voltage is within the range of 0.238 V to 4.901 V, and determines that the voltage is not normal if the voltage is outside this range. To do.

The determination of the voltage value by the control device 10 is performed by A / D converting the voltage value as follows. Since the voltage value applied to the voltage measuring resistor 73 is 5 V at the maximum, which is the output voltage of the power supply P, this voltage value is, for example, A / D converted with a resolution of 10 bits within the range of 0 to 5 V in the control device 10 Is done. Since the normal range of the voltage value is 0.238V to 4.901V, the minimum value of 0.238V is
(1023 × 0.238) ÷ 5 ≒ 49
And the maximum value of 4.901V is
(1023 × 4.901) ÷ 5≈1002
Is converted. Therefore, if the A / D converted value is in the range of 49 to 1002, it is determined to be a normal value, and if it is outside this range, it is determined to be not a normal value.

  Next, control of the electrostatic shoe determination apparatus 1 in the control device 10 will be described.

  First, the control device 10 monitors whether or not a sensing signal transmitted from the pressure sensor 30 that senses the placement of the electrostatic shoe S has been received (step S1). When the sensing signal is not received (in the case of “N” in step S1), monitoring by the control device 10 is continued.

  When the pressure sensor 30 senses the placement of the electrostatic shoe S and transmits a sensing signal and the control device 10 receives it (in the case of “Y” in step S1), the first relay 40 is controlled by the control device 10. The switch 41 is turned on (step S2). The voltage value of the voltage measuring resistor 73 is measured by the control device 10 (step S3). The measured voltage value of the voltage measuring resistor 73 is A / D converted by the control device 10 (step S4). Thereafter, the control device 10 determines whether or not the A / D converted value is within a normal range (step S5).

  When it is determined that the A / D converted value is a normal value (“Y” in step S5), the LED 61 is turned on under the control of the control device 10 (step S6). Under the control of the control device 10, the switches 51a and 51b of the second relays 50a and 50b are turned on (step S7). Thereafter, the static electricity charged to the wearer wearing the electrostatic shoes S placed on the conductive plates 20a and 20b is discharged to the ground 52a and 52b (step S8), and the process is terminated.

  When it is determined that the A / D converted value is not a normal value (“N” in step S5), the LED 62 is turned on under the control of the control device 10 (step S9). Thereafter, an alarm signal is generated from the buzzer 63 under the control of the control device 10 (step S10), and the process is terminated.

  As described above, according to the electrostatic shoe determination device 1, when the electrostatic shoe S is placed on the conductive plates 20a and 20b and the pressure sensor 30 senses the placement of the electrostatic shoe S, the first relay When the switch 41 of 40 is turned on, the current I flows through the electrostatic shoe S, and the voltage value of the voltage measuring resistor 73 is measured based on the resistance value of the electrostatic shoe S. Since it is determined whether or not the voltage value is a normal value, the wearer of the electrostatic shoe S can determine the electrostatic shoe without touching the hand. Moreover, since an electric current is supplied only to the electrostatic shoes S and no electric current is supplied to the wearer's human body, even a wearer using a medical device such as a pacemaker can be used. Furthermore, by providing the first relay 40, it is possible to prevent a wasteful current from flowing in a state where the electrostatic shoes S are not placed.

  Since a gap is provided between the conductive plate 20a and the conductive plate 20b and the electrostatic shoe S is placed so as to straddle the gap, the resistance value of the electrostatic shoe S is accurately reflected in the measured voltage value. be able to.

  When it is determined that the voltage value is a normal value, the switches 51a and 51b of the second relays 50a and 50b are turned on, and the ground 52a that discharges the static electricity charged to the wearer of the electrostatic shoe S , 52b can prevent electrostatic discharge due to static electricity charged on the human body. Further, by providing the second relays 50a and 50b, it is possible to easily discharge after the determination of the electrostatic shoe S.

  Furthermore, by providing the LEDs 61 and 62 and the buzzer 63, it is possible to easily grasp the determination result of the electrostatic shoe S.

(Embodiment 2)
The room entry management system 100 according to Embodiment 2 of the present invention determines whether or not the antistatic performance of the electrostatic shoes is appropriate, and permits entry when it is worn correctly, and does not wear it correctly. 4 is a system that refuses entry into the room, mainly as shown in the perspective view of FIG. It has.

  The electrostatic shoe determination device 1A has the same configuration as the electrostatic shoe determination device 1 according to the first embodiment, but includes two conductive plates 20 for determining the electrostatic shoe S worn on both feet. The difference from the first embodiment is that the LEDs 61 and 62 are not provided. FIG. 4 shows only two conductive plates 20 embedded in the floor surface.

  The gate device 101 is a device partitioned to guide the wearers of the electrostatic shoes S one by one, provided so that the wearer passes between the two gate devices 101, and when the wearer passes It is installed so that it is possible to determine whether or not the antistatic performance of the electrostatic shoe S is appropriate by placing both feet on the two conductive plates 20.

  The intrusion prevention plate 102 is a plate-like member that is provided in place of the LEDs 61 and 62 of the electrostatic shoe determination device 1 according to Embodiment 1 and opens and closes depending on the determination result of the electrostatic shoe S by the electrostatic shoe determination device 1A. When the determination result of the electrostatic shoe S attached to the gate device 101 is normal, the wearer is allowed to enter the closed state in parallel with the gate device 101, and the determination result of the electrostatic shoe S is normal. If not, it is attached to the gate device 101 so as to refuse the wearer's entry while being opened vertically.

  For example, the monitoring camera 103 reads an identification tag attached to the wearer's hat or work clothes, and determines whether or not the wearer is permitted to enter the end of the gate device 101. This is an apparatus for photographing a state of passing between the gate devices 101. The entry management of the wearer by the monitoring camera 103 is performed in parallel with the determination of the electrostatic shoe S by the electrostatic shoe determination device 1A.

  According to the entrance management system 100, the gate device 101 and the entry preventing plate 102 are provided, and when the determination result of the electrostatic shoe S by the electrostatic shoe determination device 1A is normal, the wearer is allowed to enter the When the determination result of the shoe S is not normal, the entry of the wearer is rejected, so that the entry of the person whose antistatic performance of the electrostatic shoe S is not appropriate can be reliably prevented.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to the above embodiment, and even if there is a design change or the like without departing from the gist of the present invention, Included in the invention. For example, in the above embodiment, the resistance value of the electrostatic shoe S is uniformly determined as 100 kΩ to 100 MΩ, and the voltage value is measured, but the input unit for inputting the resistance value corresponding to the type of the electrostatic shoe S is provided. The determination may be made by measuring the voltage value based on the input resistance value. Alternatively, the type of the electrostatic shoe S may be input, a resistance value corresponding to the input type of the electrostatic shoe S may be stored in advance, and the voltage value may be measured and determined based on the resistance value. . In addition, an IC tag or the like in which the type of the electrostatic shoe S is stored is incorporated in the electrostatic shoe S, and the resistance value stored in advance is read by grasping the type of the electrostatic shoe S by reading the IC tag. The determination may be made by measuring the voltage value based on the resistance value. Furthermore, the electrostatic shoe S is photographed by the monitoring camera 103 or the like of the entrance management system 100 according to the second embodiment, the type of the electrostatic shoe S is grasped from the image, and a pre-stored resistance value is read. The determination may be made by measuring the voltage value based on the resistance value. This makes it possible to determine the electrostatic shoe S more accurately.

  In the second embodiment, only the intrusion prevention plate 102 is provided in place of the LEDs 61 and 62 of the first embodiment. However, a buzzer 63 may be provided, and an alarm lamp or the like is provided above the gate device 101. May be provided.

1,1A Electrostatic shoe determination device 10 Control device (resistance value determination unit)
20 conductive plates (first conductive plate, second conductive plate)
20a Conductive plate (first conductive plate)
20b Conductive plate (second conductive plate)
21 Insulating plate 30 Pressure sensor 40 1st relay 50, 50a, 50b 2nd relay 52a, 52b Ground (discharge part)
61, 62 LED (display unit)
63 Buzzer (Alarm)
100 Entrance management system 101 Gate device (entrance management device)

Claims (7)

An electrostatic shoe determination device that determines whether or not the antistatic performance of an electrostatic shoe that prevents discharge of static electricity charged on a human body is appropriate,
A first conductive plate for placing the toe side of the electrostatic shoe;
A second conductive plate provided adjacent to the first conductive plate for mounting the heel side of the electrostatic shoe;
An insulating plate on which the first conductive plate and the second conductive plate are placed, and the first conductive plate and the second conductive plate are electrically insulated; and
A pressure sensor for sensing that the electrostatic shoe is placed on the first conductive plate and the second conductive plate;
When the pressure sensor senses the placement of the electrostatic shoe, a current is passed between the first conductive plate and the second conductive plate, and measured based on the resistance value of the electrostatic shoe. A resistance value determination unit for determining whether or not the voltage value is a normal value;
An electrostatic shoe determination device comprising: A gap is provided between the first conductive plate and the second conductive plate,
The electrostatic shoe is placed on the first conductive plate and the second conductive plate so as to straddle the gap.
The electrostatic shoe determination apparatus according to claim 1. When the resistance value determination unit determines that the voltage value is a normal value, the discharge unit discharges static electricity charged on the wearer of the electrostatic shoe,
The electrostatic shoe determination device according to claim 1, wherein the determination device is an electrostatic shoe determination device. A first relay that switches so that a predetermined current flows through the first conductive plate, the second conductive plate, and the electrostatic shoe when the pressure sensor detects the placement of the electrostatic shoe;
When the resistance value determination unit determines that the voltage value is a normal value, the static electricity generated by the discharge unit from the conductive state of the first conductive plate, the second conductive plate, and the electrostatic shoe. A second relay that switches to a discharge state of
The electrostatic shoe determination device according to claim 3, comprising: When the resistance value determination unit determines that the voltage value is not a normal value, the warning value unit generates an alarm signal.
The electrostatic shoe determination apparatus according to any one of claims 1 to 4, wherein: When the resistance value determination unit determines that the voltage value is a normal value, the resistance value determination unit displays that the voltage value is a normal value, and the resistance value determination unit determines that the voltage value is not a normal value. When equipped with a display to display that the value is not normal,
The electrostatic shoe determination apparatus according to any one of claims 1 to 5, wherein: The electrostatic shoe determination device according to any one of claims 1 to 6,
When it is determined that the voltage value is a normal value in the resistance value determination unit, allowing entry into the room, and when the resistance value determination unit determines that the voltage value is not a normal value, An entry management device that refuses entry into the room,
An entrance management system characterized by comprising:

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