Human body infrared induction access control circuit with lighting function and system thereof

Abstract

The utility model provides a human body infrared induction access control circuit with a lighting function and a system thereof, the output end of a human body infrared induction module is connected with the input end of a level conversion delay control module, and the output end of the level conversion delay control module is connected with the input end of an access controller; the lighting control module and the ACDC converter are electrically connected with the access controller, so that the access controller can automatically open the door when a person arrives at the position 3-5 meters in front of the door, the convenience of access control use is improved, the level conversion delay control module delays to provide time for safe access of the person after the door is opened, the door is locked again after the delay is ended, and the safety of the door is improved. And lighting is provided for a user while the switch is convenient, the door can be automatically opened when a person arrives, the lighting lamp is turned on when the door is opened, and the personal access efficiency and access safety are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to access control system technical field more specifically, it is a kind of human infrared induction access control circuit and system with lighting function. BACKGROUND

[0002] With the development of modern technology, people's safety awareness is constantly improved, and the security management level of community, housing or office area is also increased, and access control system is used more to increase security protection for factory, office, apartment and dormitory, and the door and passage of access are controlled.

[0003] In prior art, existing access control is mostly through mechanical pressing switch to give a signal to access controller, and access controller completes unlocking and locking after a period of time according to unlocking signal. The access control lacks lighting function, which leads to inconvenience of access after door opening at night, and may cause safety problems due to dark environment.

[0004] Therefore, the utility model provides a kind of illumination, safe use, a kind of human infrared induction access control circuit and system with lighting function. UTILITY MODEL CONTENT

[0005] The utility model provides a kind of illumination, safe use, a kind of human infrared induction access control circuit and system with lighting function.

[0006] A kind of human infrared induction access control circuit with lighting function, including human infrared induction circuit, level conversion delay control circuit, access controller, ACDC converter, lighting control circuit, its characterized in that: the human infrared induction circuit output and level conversion delay control circuit input are connected, human infrared induction circuit is used to sense human infrared emission and transmit analog signal to level conversion delay control circuit, level conversion delay control circuit output and access controller input are connected, level conversion delay control circuit is used to convert analog signal into digital signal and trigger delay, lighting control circuit, ACDC converter and access controller are electrically connected, ACDC converter is used to provide power supply for access controller, and lighting control circuit is used to control lighting lamp opening and closing.

[0007] In some embodiments, the lighting control circuit comprises a resistor R01, an NPN triode Q01, a resistor R02, a light-emitting diode D01, a light-emitting diode D02, a light-emitting diode D03, a light-emitting diode D04, the access controller is connected with the NPN triode Q01 base through the resistor R01, the resistor R01 provides a bias current for the NPN triode Q01 base, the NPN triode Q01 collector is connected with the power supply positive pole VCC in turn through the light-emitting diode D01, the light-emitting diode D02, the light-emitting diode D03 and the light-emitting diode D04, the power supply positive pole VCC is connected with the light-emitting diode D01, the light-emitting diode D02, the light-emitting diode D03 and the light-emitting diode D04 through the resistor R02, the resistor R02 is a current limiting resistor for the light-emitting diode D01, the light-emitting diode D02, the light-emitting diode D03 and the light-emitting diode D04, and functions to prevent the light-emitting diode D01, the light-emitting diode D02, the light-emitting diode D03 and the light-emitting diode D04 from being damaged by a large current.

[0008] In some embodiments, the level conversion delay control circuit comprises a Q1 triode, a U1 photoelectric coupler, a U2 chip, a R4 resistor, an adjustable resistor RP, a C4 capacitor, a capacitor C1, a capacitor C2, a capacitor C3, the human body infrared induction circuit output end is connected with the Q1 triode base, the Q1 triode emitter is grounded, the Q1 triode collector is connected with the U1 photoelectric coupler light-emitting tube negative pole, the U1 photoelectric coupler light-emitting tube is connected with the power supply positive pole VCC, the U1 photoelectric coupler output end collector is connected with the U2 chip 2 pin, the U1 photoelectric coupler output end emitter is grounded, the U2 chip 2 pin is connected with the power supply positive pole VCC through the resistor R4, the U2 chip 6 pin and 7 pin short end is grounded through the capacitor C4, the U2 chip 6 pin and 7 pin long end is connected with the power supply positive pole VCC through the adjustable resistor RP, the U2 chip 8 pin is connected with the power supply positive pole VCC, the U2 chip 4 pin is grounded through the capacitor C3, the U2 chip 5 pin is grounded through the capacitor C1, the U2 chip 8 pin is grounded through the capacitor C2, and the U2 chip 3 pin is connected with the access controller input end.

[0009] Further, the adjustable resistor RP and the power supply positive pole VCC are further provided with a resistor R5, the resistor R5 and the resistor RP are connected in series to the U2 chip 6 pin and 7 pin, and form an RC timing circuit with the capacitor C4, and function to delay.

[0010] In some embodiments, a resistor R1 is further arranged between the output end of the human body infrared sensing circuit and the base of the Q1 triode, the resistor R1 provides current limitation for the base of the Q1 triode, and protects the Q1 triode; a resistor R2 is further arranged between the light emitting tube of the U1 photoelectric coupler and the positive pole VCC of the power supply, the resistor R2 provides a bias current for the light emitting tube of the U1 photoelectric coupler; and a resistor R3 is further arranged between the output end collector of the U1 photoelectric coupler and the 2 pin of the U2 chip, the resistor R3 provides a pull-down resistor for the trigger 2 pin of the U2 chip.

[0011] In some embodiments, the human body infrared sensing circuit comprises an infrared sensing probe, an amplifier, and a comparator, the output end of the infrared sensing probe is connected with the input end of the amplifier, the output end of the amplifier is connected with the input end of the comparator, and the output end of the comparator is connected with the input end of the level conversion and delay control circuit.

[0012] In some embodiments, a shaping filter circuit is further arranged between the output end of the amplifier and the input end of the comparator, for shaping and filtering the output signal.

[0013] In some embodiments, the amplifier is an LM324 amplifier.

[0014] In some embodiments, the U2 chip is a 555 time base chip.

[0015] A control system comprises a human body infrared sensing module, a level conversion and delay control module, an access control device, an ACDC converter, and an illumination control module, characterized in that: the output end of the human body infrared sensing module is connected with the input end of the level conversion and delay control module, the human body infrared sensing module is used for sensing the infrared emission of a human body and transmitting a signal to the level conversion and delay control module; the output end of the level conversion and delay control module is connected with the input end of the access control device, the level conversion and delay control module is used for converting an analog signal into a digital signal and triggering a delay; the illumination control module and the ACDC converter are electrically connected with the access control device, the ACDC converter is used for providing a power supply for the access control device, and the illumination control circuit is used for controlling the opening and closing of an illumination lamp.

[0016] The utility model discloses a beneficial effect: the utility model provides a human infrared induction access control circuit and system with lighting function, human infrared induction module output end is connected with level conversion delay control module input end, and level conversion delay control module output end is connected with access controller input end, and lighting control module, ACDC converter and access controller electric connection make that access controller can realize that person is to the door 3-5m place and can open the door automatically, improve the convenience of access use, and the level conversion delay control module provides a personnel safety access time after opening the door, and after the time delay, will relock, and provide lighting for the user while convenient switch, realize that person is to open the door automatically, and open the light when opening the door, improve personal access efficiency and access security. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the circuit schematic drawing of the level conversion delay control circuit of the application.

[0018] Figure 2 It is the circuit schematic drawing of the lighting control circuit of the application.

[0019] Figure 3 It is the structure schematic drawing of the human infrared induction access control system with lighting function of the application.

[0020] The following specific embodiments will further illustrate the utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0021] The following embodiments are described to assist in the understanding of the application, the embodiments are not and should not be interpreted as limiting the protection scope of the application in any way.

[0022] In the following description, those skilled in the art will recognize that throughout the present discussion, components can be described as single functional units (which can comprise sub-units), but those skilled in the art will recognize that the various components, or portions thereof, can be divided into separate components, or can be integrated together (including integrated within a single system or component).

[0023] At the same time, the connection between the components or systems is not intended to be limited to direct connection, on the contrary, the data between these components can be modified, re-formatted, or otherwise changed by intermediate components. In addition, additional or fewer connections can be used. It should also be noted that the term "coupled", "connected", or "input" should be understood to include direct connection, indirect connection through one or more intermediate devices, and wireless connection. Embodiment 1:

[0024] A human infrared sensor access control circuit with lighting function includes a human infrared sensor circuit, a level conversion delay control circuit, an access controller, an AC-DC converter, and a lighting control circuit. The circuit is characterized in that: the output terminal of the human infrared sensor circuit is connected to the input terminal of the level conversion delay control circuit; the human infrared sensor circuit is used to detect infrared radiation from a sensed human body and transmit an analog signal to the level conversion delay control circuit; the output terminal of the level conversion delay control circuit is connected to the input terminal of the access controller; the level conversion delay control circuit is used to convert the analog signal into a digital signal and trigger a delay; the lighting control circuit and the AC-DC converter are electrically connected to the access controller; the AC-DC converter is used to provide power to the access controller; and the lighting control circuit is used to control the opening and closing of lighting fixtures.

[0025] like Figure 1 As shown, the level conversion delay control circuit includes a transistor Q1, an optocoupler U1, a chip U2, a resistor R4, an adjustable resistor RP, a capacitor C4, capacitors C1, C2, and C3. The output terminal of the human infrared sensing circuit is connected to the base of transistor Q1, the emitter of transistor Q1 is grounded, the collector of transistor Q1 is connected to the negative terminal of the LED of optocoupler U1, the LED of optocoupler U1 is connected to the positive power supply VCC, the collector of the output terminal of optocoupler U1 is connected to pin 2 of chip U2, the emitter of the output terminal of optocoupler U1 is grounded, pin 2 of chip U2 is connected to the positive power supply VCC through resistor R4, pins 6 and 7 of chip U2 are shorted at one end and grounded through capacitor C4, pins 6 and 7 of chip U2 are shorted at the other end and connected to the positive power supply VCC through adjustable resistor RP, and pin 8 of chip U2 is connected to the positive power supply VCC. Pin 4 of the U2 chip is grounded through capacitor C3, pin 5 of the U2 chip is grounded through capacitor C1, pin 8 of the U2 chip is grounded through capacitor C2, and pin 3 of the U2 chip is connected to the input terminal of the access controller.

[0026] Specifically, the signal output by the human infrared sensing circuit causes transistor Q1 to saturate and conduct, the LED of optocoupler U1 to light up, and the output of optocoupler U1 pulls the voltage at pin 2 of chip U2 down to 1 / 3VCC. Then, pin 3 of chip U2 outputs an opening signal (high level). The opening signal (high level) triggers the access controller to open the electromagnetic lock. At the same time as pin 3 of chip U2 outputs the opening signal (high level), the internal discharge at pin 7 of chip U2 turns off transistor Q1, and capacitor C4 begins to charge through resistor R5 and adjustable resistor RP. When capacitor C4 is charged to 2 / 3VCC, pin 3 of chip U2 flips to a low level. The delay time is 1.1 * (resistor R5 + adjustable resistor RP) * capacitor C4. After receiving the low level, the access controller controls the electromagnetic lock to lock.

[0027] The adjustable resistor RP and the positive pole VCC of the power supply are further provided with a resistor R5, which is connected to the 6th pin and the 7th pin of the U2 chip in series with the resistor RP and is connected with the capacitor C4 to form an RC timing circuit, thereby playing a delaying role.

[0028] The human body infrared induction circuit output end and the Q1 triode base are further provided with a resistor R1, which provides current limitation for the Q1 triode base and protects the Q1 triode; the U1 photoelectric coupler light emitting tube and the positive pole VCC of the power supply are further provided with a resistor R2, which provides a bias current for the U1 photoelectric coupler light emitting tube end; the output end collector of the U1 photoelectric coupler and the 2nd pin of the U2 chip are further provided with a resistor R3, which provides a pull-down resistor for the trigger 2nd pin of the U2 chip.

[0029] As shown in Figure 2 The lighting control circuit comprises a resistor R01, an NPN triode Q01, a resistor R02, a light emitting diode D01, a light emitting diode D02, a light emitting diode D03, and a light emitting diode D04. The access control controller is connected with the NPN triode Q01 base through the resistor R01, which provides a bias current for the NPN triode Q01 base. The NPN triode Q01 collector is sequentially connected with the light emitting diode D01, the light emitting diode D02, the light emitting diode D03, and the light emitting diode D04 between the positive pole VCC and the light emitting diode D01, the light emitting diode D02, the light emitting diode D03, and the light emitting diode D04. The resistor R02 is provided between the positive pole VCC and the light emitting diode D01, the light emitting diode D02, the light emitting diode D03, and the light emitting diode D04, which is a current limiting resistor for the light emitting diode D01, the light emitting diode D02, the light emitting diode D03, and the light emitting diode D04, thereby preventing the light emitting diode D01, the light emitting diode D02, the light emitting diode D03, and the light emitting diode D04 from being damaged by a large current.

[0030] Specifically, the door opening signal (high level) triggers the unlocking signal output by the access control controller, provides a base bias current for the NPN triode Q01 through the resistor R01, makes the NPN triode Q01 saturated and turned on, and makes the light emitting diode D01, the light emitting diode D02, the light emitting diode D03, and the light emitting diode D04 be turned on by the NPN triode Q01 collector.

[0031] The human body infrared induction circuit comprises an infrared induction probe, an amplifier, and a comparator. The infrared induction probe output end is connected with the amplifier input end, the amplifier output end is connected with the comparator input end, and the comparator output end is connected with the level conversion delay control circuit input end.

[0032] The amplifier output end and the comparator input end are further provided with a shaping filter circuit, which is used for shaping and filtering the output signal.

[0033] The amplifier is an LM324 amplifier, and the U2 chip is a 555 time base chip.

[0034] As shown in Figure 3 The application discloses a control system, which comprises a human body infrared induction module, a level conversion and delay control module, an access control controller, an ACDC converter and an illumination control module, wherein the output end of the human body infrared induction module is connected with the input end of the level conversion and delay control module, the human body infrared induction module is used for inducting human body infrared emission and transmitting signals to the level conversion and delay control module, the output end of the level conversion and delay control module is connected with the input end of the access control controller, the level conversion and delay control module is used for converting analog signals into digital signals and triggering delay, the illumination control module and the ACDC converter are electrically connected with the access control controller, the ACDC converter is used for providing power supply for the access control controller, and the illumination control circuit is used for controlling the opening and closing of the lighting lamps.

[0035] Specifically, the human body infrared induction module is connected with the level conversion and delay control module, the level conversion and delay control module is connected with the access control controller, and the access control controller is connected with the ACDC converter, when a person is in the induction area, the human body infrared induction module outputs a high level, the high level triggers the level conversion and delay control module, then the level conversion and delay control module outputs an opening signal, the access control controller is triggered to open the electromagnetic lock and open the door, and the access control controller triggers the illumination control when the electromagnetic lock is opened, so that the electromagnetic door is automatically opened and the illumination control is triggered.

[0036] Although the present application has disclosed multiple aspects and embodiments, other aspects and embodiments will be apparent to those skilled in the art, and several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. The multiple aspects and embodiments disclosed by the present application are only used for illustration, and are not intended to limit the present application, and the actual protection scope of the present application is subject to the claims.

Claims

1. A human infrared sensor access control circuit with lighting function, comprising a human infrared sensor circuit, a level conversion delay control circuit, an access controller, an ACDC converter, and a lighting control circuit, characterized in that: The output of the human infrared sensing circuit is connected to the input of the level conversion delay control circuit. The human infrared sensing circuit is used to detect the infrared emission of the human body and transmit the analog signal to the level conversion delay control circuit. The output of the level conversion delay control circuit is connected to the input of the access controller. The level conversion delay control circuit is used to convert the analog signal into a digital signal and trigger the delay. The lighting control circuit and the ACDC converter are electrically connected to the access controller. The ACDC converter is used to provide power to the access controller. The lighting control circuit is used to control the opening and closing of the lighting fixtures.

2. The human infrared sensor access control circuit with illumination function as described in claim 1, characterized in that: The lighting control circuit includes a resistor R01, an NPN transistor Q01, a resistor R02, and LEDs D01, D02, D03, and D04. The access controller is connected to the base of the NPN transistor Q01 through the resistor R01, which provides the base bias current for the NPN transistor Q01. LEDs D01, D02, D03, and D04 are connected sequentially between the collector of the NPN transistor Q01 and the positive power supply VCC. A resistor R02 is provided between the positive power supply VCC and LEDs D01, D02, D03, and D04. Resistor R02 acts as a current-limiting resistor for LEDs D01, D02, D03, and D04, preventing them from being damaged by large currents.

3. The human infrared sensor access control circuit with illumination function as described in claim 1, characterized in that: The level conversion delay control circuit includes a transistor Q1, an optocoupler U1, a chip U2, a resistor R4, an adjustable resistor RP, a capacitor C4, capacitors C1, C2, and C3. The output terminal of the human infrared sensing circuit is connected to the base of transistor Q1, the emitter of transistor Q1 is grounded, the collector of transistor Q1 is connected to the negative terminal of the LED of optocoupler U1, the LED of optocoupler U1 is connected to the positive power supply VCC, the collector of the output terminal of optocoupler U1 is connected to pin 2 of chip U2, the emitter of the output terminal of optocoupler U1 is grounded, pin 2 of chip U2 is connected to the positive power supply VCC through resistor R4, pins 6 and 7 of chip U2 are shorted at one end and grounded through capacitor C4, pins 6 and 7 of chip U2 are shorted at the other end and connected to the positive power supply VCC through adjustable resistor RP, and pin 8 of chip U2 is connected to the positive power supply VCC. Pin 4 of the U2 chip is grounded through capacitor C3, pin 5 of the U2 chip is grounded through capacitor C1, pin 8 of the U2 chip is grounded through capacitor C2, and pin 3 of the U2 chip is connected to the input terminal of the access control controller.

4. The human infrared sensor access control circuit with illumination function as described in claim 2, characterized in that: A resistor R5 is also provided between the adjustable resistor RP and the positive power supply VCC. The resistor R5 and the resistor RP are connected in series to pins 6 and 7 of the U2 chip, and are connected to capacitor C4 to form an RC timing circuit, which plays a delay role.

5. The human infrared sensor access control circuit with illumination function as described in claim 2, characterized in that: A resistor R1 is provided between the output terminal of the human infrared sensing circuit and the base of transistor Q1. Resistor R1 provides current limitation for the base of transistor Q1, thus protecting transistor Q1. A resistor R2 is provided between the LED of optocoupler U1 and the positive power supply VCC. Resistor R2 provides bias current for the LED of optocoupler U1. A resistor R3 is provided between the collector of the output terminal of optocoupler U1 and pin 2 of chip U2. Resistor R3 provides pull-down resistance for the trigger pin 2 of chip U2.

6. The human infrared sensor access control circuit with illumination function as described in claim 5, characterized in that: The human infrared sensing circuit includes an infrared sensing probe, an amplifier, and a comparator. The output terminal of the infrared sensing probe is connected to the input terminal of the amplifier, the output terminal of the amplifier is connected to the input terminal of the comparator, and the output terminal of the comparator is connected to the input terminal of the level conversion delay control circuit.

7. The human infrared sensor access control circuit with illumination function as described in claim 6, characterized in that: A shaping and filtering circuit is also provided between the amplifier output terminal and the comparator input terminal to shape and filter the output signal.

8. The human infrared sensor access control circuit with illumination function as described in claim 6, characterized in that: The amplifier is an LM324 amplifier.

9. The human infrared sensor access control circuit with illumination function as described in claim 3, characterized in that: The U2 chip is a 555 timer chip.

10. A control system, characterized in that, The human infrared sensor access control circuit with lighting function, as described in any one of claims 1 to 9, includes a human infrared sensor module, a level conversion delay control module, an access controller, an ACDC converter, and a lighting control module. The circuit is characterized in that: the output terminal of the human infrared sensor module is connected to the input terminal of the level conversion delay control module; the human infrared sensor module is used to detect and emit infrared radiation from a human body and transmit the signal to the level conversion delay control module; the output terminal of the level conversion delay control module is connected to the input terminal of the access controller; the level conversion delay control module is used to convert the analog signal into a digital signal and trigger a delay; the lighting control module and the ACDC converter are electrically connected to the access controller; the ACDC converter is used to provide power to the access controller; and the lighting control circuit is used to control the opening and closing of lighting fixtures.

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