Intelligent access control opening circuit, intelligent identification access control terminal and intelligent access control system

Abstract

The utility model provides an intelligent entrance guard opening circuit, which comprises an OR gate circuit comprising a first input end, a second input end and an output end, the first input end is connected with an opening key, the second input end is connected with a main controller of an identity recognition terminal, and the output end is connected with an opening execution circuit; the door opening execution circuit is connected with the door lock mechanism; the utility model further provides an intelligent identification access control terminal for the access control system, the intelligent identification access control terminal comprises an identity identification terminal and the intelligent access control door opening circuit, and the main controller of the identity identification terminal is connected with the second input end of the OR gate circuit in the intelligent access control door opening circuit; a door opening execution circuit in the intelligent access control door opening circuit is connected with a door lock mechanism of the access control system; finally, the utility model provides an intelligent access control system which comprises a door opening key, a door lock mechanism and the intelligent identification access control terminal.

Description

TECHNICAL FIELD

[0001] The utility model relates to a door access circuit, specifically, relates to an intelligent door access opening circuit, intelligent identification door access terminal and intelligent door access system. BACKGROUND

[0002] At present, intelligent door access adopts two schemes of lock control of equipment itself and lock control of special power supply for door access. Figure 1 As shown in the figure, the special power supply for door access is connected with the intelligent identification door access terminal, the intelligent identification door access terminal is used to provide an opening signal, and the special power supply for door access is also connected with an opening button to realize lock control, and this scheme has high cost, and if the equipment needs to obtain the data of the opening button, wiring to the intelligent identification door access terminal also needs to be increased. In the scheme of lock control of equipment itself, the opening button signal is connected with the main control through an optical coupler, and after the main control receives the opening button signal, an opening signal is output to a relay to realize information collection and control of opening.

[0003] However, when the equipment is dead, cannot be started and the like, automatic opening of the door cannot be realized by pressing the opening button, and generally, the door lock is a magnetic lock, is attracted by default, and needs to be powered off or forcibly destroyed to be opened. When the equipment is abnormal, the door cannot be opened, and the user experience is affected.

[0004] In order to solve the above problems, people have been seeking an ideal technical solution. SUMMARY

[0005] The utility model aims at the shortage of prior art, and provides an intelligent door access opening circuit, an intelligent identification door access terminal and an intelligent door access system.

[0006] In order to realize the above purpose, the technical scheme adopted by the utility model is:

[0007] The first aspect provides an intelligent door access opening circuit, which comprises:

[0008] An or circuit comprises a first input end, a second input end and an output end, the first input end is connected with an opening button, the second input end is connected with a main controller of an identity recognition terminal, and the output end is connected with an opening execution circuit;

[0009] The opening execution circuit is connected with a door lock mechanism.

[0010] Further, a level conversion circuit is arranged between the first input end and the opening button.

[0011] Further, the level conversion circuit comprises a first switch tube, the control end of the first switch tube is connected with the opening button through a resistor, and the output end of the first switch tube is connected with the first input end of the or circuit.

[0012] Further, the door opening execution circuit comprises a second switch tube and a relay;

[0013] The control end of the second switch tube is connected with the output end of the OR gate circuit, the output end of the second switch tube is connected in series with the energized coil of the relay, and the normally closed contact of the relay is connected in series in the power supply loop of the door lock mechanism.

[0014] Further, the OR gate circuit is a diode OR gate circuit, a switch OR gate circuit and / or a MOS OR gate circuit.

[0015] The second aspect provides an intelligent identification access control terminal for an access control system, comprising an identity identification terminal and the intelligent access control door opening circuit provided in the first aspect, wherein the main controller of the identity identification terminal is connected with the second input end of the OR gate circuit in the intelligent access control door opening circuit, and the door opening execution circuit in the intelligent access control door opening circuit is connected with the door lock mechanism of the access control system.

[0016] Further, the main controller of the identity identification terminal is also connected with the first input end of the OR gate circuit in the intelligent access control door opening circuit, so as to collect the door opening button signal for subsequent door opening data checking.

[0017] The utility model discloses relative prior art has substantial characteristics and progress, specifically speaking, the utility model discloses, on the basis that the original access control controller gathers door opening button signal control relay action, increases the OR gate hardware circuit mode and realizes two kinds of door opening modes, and the identity identification terminal controls the door lock mechanism to open the door or directly opens the door by pressing the door opening button. The scheme can normally control the door lock mechanism through the identity identification terminal and the door opening button when the equipment system is normal, and directly opens the door by pressing the door opening button when the equipment system is abnormal. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the control principle diagram of the prior art intelligent access control.

[0019] Figure 2 It is the control principle diagram of the intelligent access control door opening circuit of the utility model.

[0020] Figure 3 It is the circuit schematic diagram of the intelligent access control door opening circuit of the utility model.

[0021] Figure 4 It is the control principle diagram of the intelligent identification access control terminal of the utility model.

[0022] Figure 5 It is the control principle diagram of the intelligent access control system of the utility model. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model is described in further detail below with specific embodiments.

[0024] Embodiment 1

[0025] The embodiment provides an intelligent access control door opening circuit, as shown in the accompanying drawings, comprising: Figure 2

[0026] An OR gate circuit comprises a first input end, a second input end and an output end, the first input end is connected with a door opening button, the second input end is connected with a main controller of an identity recognition terminal, and the output end is connected with a door opening execution circuit; in specific implementation, the OR gate circuit is a diode OR gate circuit, a switch OR gate circuit and / or a COMS OR gate circuit.

[0027] The door opening execution circuit is connected with a door lock mechanism. In specific implementation, the door lock mechanism is an electromagnetic lock, which utilizes the principle of electricity generating magnetism, and when current passes through a silicon steel sheet, the electromagnetic lock generates strong suction force to tightly suck an adsorption iron plate to achieve the effect of locking the door; when no current passes through the silicon steel sheet, the electromagnetic lock loses the suction force and the door can be opened; the default state is the suction state, and the forced opening needs to be powered off or forcibly damaged.

[0028] The door opening button, in general, when the door opening button is not pressed, the output signal is a high level signal; when the door opening button is pressed, the output signal is a low level signal. Normally, the door opening button needs to be connected with an optical coupler to transmit the door opening button signal after signal isolation to the main controller.

[0029] The identity recognition terminal, in specific implementation, comprises a face recognition tablet, a fingerprint recognition terminal, an IC card recognition terminal and the like; in specific implementation, the identity recognition terminal outputs a high level door opening signal when the recognition result of the identity device is pass.

[0030] Further, a level conversion circuit is arranged between the first input end and the door opening button. The level conversion circuit comprises a first switch tube, a control end of the first switch tube is connected with the door opening button through a resistor, and an output end of the first switch tube is connected with the first input end of the OR gate circuit.

[0031] In an embodiment, the door opening execution circuit comprises a second switch tube and a relay.

[0032] ​The control end of the second switch tube is connected with the output end of the OR gate circuit, the output end of the second switch tube is connected with the energized coil of the relay in series, and the normally closed contact of the relay is connected in the power supply loop of the door lock mechanism. Under normal circumstances, the energized coil of the relay loses power, the normally closed contact is closed, the power supply loop of the electromagnetic lock is connected, the current passes through the silicon steel sheet of the electromagnetic lock, the electromagnetic lock generates a strong suction force to tightly suck the adsorbed iron plate to achieve the effect of locking the door; when the energized coil of the relay is powered on, the normally closed contact is disconnected, the power supply loop of the electromagnetic lock is connected and disconnected, and the electromagnetic lock loses the suction force due to the loss of power, thereby achieving the effect of opening the door.

[0033] Specifically, the working principle of the embodiment is as follows:

[0034] When the identity recognition terminal works normally, the identity recognition terminal recognizes the user identity, and outputs a high-level door opening signal to the second input end of the OR gate circuit after the user identity recognition passes;

[0035] Or, when the switch button is pressed, the low-level door opening button signal is converted into a high-level signal under the action of the level conversion circuit and input to the first input end of the OR gate circuit.

[0036] When the OR gate circuit detects that any one of the door opening signal and the door opening button signal is high, a high-level signal is output to the second switch tube, the second switch tube is turned on, and the energized coil of the relay is powered on, the normally closed contact is disconnected, and the power supply loop of the electromagnetic lock is connected and disconnected; the electromagnetic lock loses the suction force due to the loss of power, thereby achieving the effect of opening the door.

[0037] The scheme can normally control the door lock mechanism through the identity recognition terminal and the door opening button when the identity recognition terminal works normally, and directly open the door by pressing the door opening button in the case of abnormal device system.

[0038] Embodiment 2

[0039] The embodiment provides a specific implementation of an intelligent access control door opening circuit.

[0040] As shown in Figure 3 The level conversion circuit includes a first switch tube Q140, the OR gate circuit includes a first diode D31 and a second diode D32, the anode of the first diode D31 serves as a first input end, the anode of the second diode D32 serves as a second input end, the cathode of the first diode D31 is connected with the cathode of the second diode D32, and serves as an output end; the door opening execution circuit includes a second switch tube Q10 and a relay JD1.

[0041] The main controller of the identity recognition terminal is connected with the anode of the second diode D32 through a resistor R101.

[0042] The switch button is connected to the control end of the first switch tube Q140 through a resistor R141.

[0043] The connection point of the cathode of the first diode D31 and the cathode of the second diode D32 is connected to the control end of the second switch tube Q10, the output end of the second switch tube Q10 is connected in series with the energized coil of the relay JD1, and the normally closed contact of the relay JD1 is connected in series with the power supply circuit of the door lock mechanism.

[0044] When the switch button is pressed, the door opening button signal is at a low level; the switch button signal is inverted to a high level at the anode of the diode D31 through the first switch tube Q140; the main controller of the identity recognition terminal

[0045] The output door opening signal and the switch button signal are controlled by an OR gate through the diode D31 and the diode D32, and when any one of the signals is at a high level, a high level is output to the second switch tube Q10 to turn it on, so as to turn on the relay JD1 and control the door to open.

[0046] It can be understood that the control end of the first switch tube Q140 is also connected to the ground through a capacitor C126 to delay the opening and closing functions; and the control end of the second switch tube Q10 is also connected to the ground through a resistor-capacitor parallel circuit (composed of R102 and C125) for filtering and voltage stabilization.

[0047] Further, the two ends of the energized coil of the relay JD1 are also connected in parallel with a voltage stabilizing diode D10 to play a role of voltage limiting protection, preventing the energized coil of the relay from being damaged due to counter electromotive force.

[0048] Embodiment 3

[0049] The embodiment provides an intelligent recognition access control terminal for an access control system, which comprises an identity recognition terminal and an intelligent access control opening circuit as described in Embodiment 1 or 2. Figure 4 As shown in the figure, the main controller of the identity recognition terminal is connected to the second input end of the OR gate in the intelligent access control opening circuit, and the door opening execution circuit in the intelligent access control opening circuit is connected to the door lock mechanism of the access control system.

[0050] Further, the main controller of the identity recognition terminal is also connected to the first input end of the OR gate in the intelligent access control opening circuit, the high and low levels of the pin connected to the first input end are detected to determine whether the door opening button is pressed, and the door opening button data and the door opening signal output by normal identity recognition are recorded together for subsequent query.

[0051] Embodiment 4

[0052] The embodiment provides an intelligent access control system, which comprises an identity recognition terminal and an intelligent access control opening circuit as described in Embodiment 1 or 2. Figure 5As shown, the door opening button, the door lock mechanism and the intelligent identification access control terminal described in embodiment 3 are connected.

[0053] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the specific embodiments of the present application can be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical scheme of the present application, all should be covered in the technical scheme range of the present application claimed by the present application.

Claims

1. An intelligent access door opening circuit, characterized in that, The application relates to an intelligent access control door opening circuit. The application relates to an intelligent access control door opening circuit. A level conversion circuit is arranged between the first input end and the door opening button.

2. The intelligent access door opening circuit according to claim 1, characterized in that: The level conversion circuit comprises a first switch tube, and a control end of the first switch tube is connected with the door opening button through a resistor; and an output end of the first switch tube is connected with a first input end of the OR gate circuit.

3. The intelligent access door opening circuit of claim 2, wherein: The door opening execution circuit comprises a second switch tube and a relay.

4. The intelligent access door opening circuit according to claim 1 or 2 or 3, characterized in that: A control end of the second switch tube is connected with an output end of the OR gate circuit, an output end of the second switch tube is connected in series with a power coil of the relay, and a normally closed contact of the relay is connected in series in a power supply loop of the door lock mechanism. The OR gate circuit is a diode OR gate circuit, a switch OR gate circuit and / or a MOS OR gate circuit.

5. The intelligent access door opening circuit of claim 1, wherein: The application relates to an intelligent access control door opening circuit.

6. An intelligent identification access terminal for an access control system, characterized in that: The application relates to an intelligent access control door opening circuit.

7. The intelligent identification access terminal for the access control system according to claim 6, characterized in that: The application relates to an intelligent access control door opening circuit.

8. An intelligent access control system characterized by: The application relates to an intelligent access control door opening circuit.

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