Monitoring device for access control equipment

Abstract

A monitoring device for access control equipment comprises at least one piece of access control equipment which is provided with a first load contact and a second load contact; the power supply is provided with a first power supply contact and a second power supply contact, the first power supply contact is connected with the first load contact, and the second power supply contact is connected with the second load contact; the over-current protection circuit is arranged between the at least one piece of access control equipment and the power supply; and the display is internally provided with a voltmeter head and an ampere meter head, the voltmeter head is connected with the first power supply contact and the second power supply contact in parallel, and the ampere meter head is connected with the second load contact and the second power supply contact in series. Therefore, according to the utility model, the display is used for monitoring the voltage and the current between the at least one access control device and the power supply, and the overcurrent protection circuit is used for preventing current overload.

Description

Technical Field

[0001] The utility model relates to a monitoring device, in particular to a monitoring device for an access control device. Background Art

[0002] An access control device is a device set in areas such as commercial offices, factories, libraries, schools, unmanned stores, airports, etc., used to control the access of non-specific personnel to a certain passage.

[0003] Please refer to the non-contact charging access control device, charging device and the system composed thereof with the Chinese Taiwan patent number M372582, which includes a charging device and an access control device. The charging device can generate an induction magnetic field. The access control device includes a biometric identification module, a battery, a second coil and a conversion circuit.

[0004] Generally speaking, since the access control device is not equipped with a voltage and current monitoring device, once overload, short circuit, wire fire and other conditions occur in the circuit, problems may occur, such as environmental damage, abandonment of electronic components, thick smoke from fires, waste of electric energy, etc.

[0005] Therefore, how to improve the above-mentioned deficiencies is the technical problem to be solved by the utility model. Summary of the Utility Model

[0006] To achieve the above objectives, the utility model provides a monitoring device for an access control device, which includes: at least one access control device, and the at least one access control device is provided with a first load contact and a second load contact; a power supply, the power supply is provided with a first power contact and a second power contact, and the first power contact is connected to the first load contact, and the second power contact is connected to the second load contact; an overcurrent protection circuit, the overcurrent protection circuit is arranged between the at least one access control device and the power supply; and a display, the interior of the display is provided with a voltage meter head and an ammeter head, the voltage meter head is connected in parallel with the first power contact and the second power contact, and the ammeter head is connected in series with the second load contact and the second power contact.

[0007] Wherein, at least one terminal block is arranged between the at least one access control device and the power supply.

[0008] Wherein, the overcurrent protection circuit is a self-resetting fuse.

[0009] Wherein, it further includes a warning board, and the warning board is arranged on one side of the at least one access control device, the power supply or the display.

[0010] Thereby, the utility model uses the display to monitor the voltage and current between the at least one access control device and the power supply, and the overcurrent protection circuit is used to prevent current overload. Brief Description of the Drawings

[0011] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.

[0012] Figure 1 It is a schematic diagram of the monitoring device for the access control device of the present utility model.

[0013] Figure 2 It is a schematic diagram of the present utility model provided with a first terminal block and a second terminal block.

[0014] Figure 3 It is a schematic diagram of the present utility model provided with a warning board.

[0015] Figure 4 It is a schematic diagram of the current direction of the present utility model.

[0016] Figure 5 It is a schematic diagram of the present utility model provided with a second access control device.

[0017] Figure 6 It is a schematic diagram of the present utility model provided with a second access control device and a third access control device.

[0018] Description of the Reference Numerals

[0019] 1: First access control device

[0020] 11: First load contact

[0021] 12: Second load contact

[0022] 2: Power supply

[0023] 21: First power contact

[0024] 22: Second power contact

[0025] 3: Overcurrent protection circuit

[0026] 4: Display

[0027] 41: Voltmeter head

[0028] 42: Ammeter head

[0029] 5: First terminal block

[0030] 6: Second terminal block

[0031] 7: Warning board

[0032] 8: Second access control device

[0033] 9: Third access control device. Detailed implementation manner

[0034] To enable the examiner to conveniently and concisely understand other feature contents, advantages and achieved effects of the present utility model more clearly, the present utility model will be described in detail with reference to the accompanying drawings as follows:

[0035] Please refer to Figure 1 As shown, the present utility model provides a monitoring device for an access control device, which includes:

[0036] At least one access control device, which is provided with a first load contact 11 and a second load contact 12. The number of the at least one access control device can be one or more. For example Figure 1 the number in Figure 5 is one, that is, a first access control device 1; for another example Figure 6 the number in

[0037] is two, that is, the first access control device 1 and a second access control device 8; for another example

[0038] is three, that is, the first access control device 1, the second access control device 8 and a third access control device 9.

[0039] A power supply 2, which is provided with a first power supply contact 21 and a second power supply contact 22, and the first power supply contact 21 is connected to the first load contact 11, and the second power supply contact 22 is connected to the second load contact 12.

[0040] Please refer to Figure 2As shown, at least one terminal block may be provided between the first access control device 1 and the power supply 2, such as Figure 2 the first terminal block 5 and a second terminal block 6 in Figure 3 As shown, the present utility model further includes a warning board 7, which is provided on one side of the at least one access control device, the power supply 2 or the display 4.

[0041] Please refer to Figure 4 As shown, in a specific implementation, the first load contact 11 of the first access control device 1 may be the positive pole, the second load contact 12 of the first access control device 1 may be the negative pole, the first power contact 21 of the power supply 2 may be the positive pole, and the second power contact 22 of the power supply 2 may be the negative pole. The first power contact 21 and the second power contact 22 may be provided on the surface of the power supply 2 and connected to the voltmeter head 41 by wires provided inside the power supply 2. The voltmeter head 41 is provided with voltage measurement connectors (i.e., Figure 4 Vin and Vout in Figure 4 ). The voltage measurement connectors are connected to the first power contact 21 (i.e., the Vin contact is connected to the first power contact 21) and the second power contact 22 (i.e., the Vout contact is connected to the second power contact 22) to form a parallel connection. The first load contact 11 and the second load contact 12 may be provided on the surface of the at least one access control device and connected to the ammeter head 42 by wires provided inside the at least one access control device. The ammeter head 42 is provided with current measurement connectors (i.e., Figure 4 the Iin contact and the Iout contact in

[0042] ). The current measurement connectors are connected to the second load contact 12 (i.e., the Iin contact is connected to the second load contact 12) and the second power contact 22 (i.e., the Iout contact is connected to the second power contact 22) to form a series connection.

[0042] In this way, the voltmeter head 41 can measure the voltage in the circuit and the display 4 can display the voltage measured by the voltmeter head 41. The ammeter head 42 can measure the current in the circuit and the display 4 can display the current measured by the ammeter head 42. In Figure 4 when the power supply 2 starts to supply power to the at least one access control device, current flows in the circuit ( Figure 4The direction of the arrow in [description] is the direction of current flow). Moreover, the voltage and current displayed by the display 4 can be coordinated with the content of the warning board 7 to remind the user to handle the current situation of the circuit. For example, the content on the warning board 7 is the maximum rated voltage of the circuit (meaning the upper limit voltage that will not damage the circuit), the maximum rated current (meaning the upper limit current that will not damage the circuit), the working voltage (meaning the voltage range that can make the circuit operate normally), and the rated current (meaning the current range that can make the circuit operate normally). When the current displayed by the display 4 does not exceed the maximum rated current, it means that the current is still in a normal state and the power generation operation is normal. If the current displayed by the display 4 exceeds the maximum rated current, it means that the number of access control devices is too large and must be processed immediately. Remove some of the access control devices. Suppose there were originally two groups, then reduce it to one group to avoid excessive number of access control devices, overloading of the wire, increase in the temperature of the wire, overheating and burning, causing the wire to catch fire and then a fire occurs. When a short circuit or overload occurs in the circuit, the large current flowing through the resettable fuse generates heat that melts the polymeric resin, causing the volume to increase rapidly, forming a high impedance state, and the current rapidly decreases, thereby restricting and protecting the circuit. When the fault is eliminated, the resettable fuse cools and crystallizes again, the volume shrinks, and the conductive particles reform a conductive path, and the resettable fuse returns to a low impedance state, thus completing the protection of the circuit without manual replacement to achieve the function of preventing current overload.

[0043] In addition, when the voltage displayed by the display 4 does not exceed the maximum rated voltage, it means that the voltage is still in a normal state and the power generation operation is normal; on the contrary, when the voltage displayed by the display 4 is lower than the working voltage, it means that the power generation is insufficient, which may be due to the power supply 2 being faulty or aged, or the number of at least one access control device being relatively large, resulting in a voltage drop.

[0044] Please refer to Figure 5 As shown, when the number of at least one access control device is two, the first access control device 1 and the second access control device 8 need to be connected to the first terminal block 5 and the second terminal block 6 respectively. Refer again to Figure 6 As shown, when the number of at least one access control device is three, the first access control device 1, the second access control device 8, and the third access control device 9 need to be connected to the first terminal block 5 and the second terminal block 6 respectively, thereby achieving the function of expansion.

[0045] Thus, the present utility model is applicable to the access control device, uses the display 4 to monitor the voltage and current between the at least one access control device and the power supply 2, and the overcurrent protection circuit 3 is used to prevent current overload.

[0046] The foregoing description is only a preferred embodiment of the present utility model and is not intended to limit the scope of implementation of the present utility model; therefore, equivalent shape, structure, or combination transformations made without departing from the spirit and scope of the present utility model should all be covered within the protection scope of the present utility model.

Claims

1. A monitoring device for access control equipment, characterized in that Comprising: At least one access control device, which is provided with a first load contact and a second load contact; An overcurrent protection circuit, which is connected to a first connection end of the at least one access control device; A power supply, which is provided with a first power contact and a second power contact, and the power supply is connected to the overcurrent protection circuit, so that the overcurrent protection circuit is between the power supply and the at least one access control device; and A display, which is internally provided with a voltage meter head and an ammeter head. The voltage meter head of the display is connected in parallel with the first power contact and the second power contact of the power supply, and the ammeter head of the display is connected in series with the second load contact of the at least one access control device and the second power contact of the power supply.

2. The monitoring device for access control equipment according to claim 1, characterized in that, At least one terminal block is provided between the at least one access control device and the power supply.

3. The monitoring device for access control equipment according to claim 1, characterized in that, The overcurrent protection circuit is a resettable fuse.

4. The monitoring device for access control equipment according to claim 1, characterized in that It further includes a warning board, which is provided on one side of the at least one access control device, the power supply or the display.

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