CN214151814U - Security door access control device and circuit used by same - Google Patents
Security door access control device and circuit used by same Download PDFInfo
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- CN214151814U CN214151814U CN202120119763.3U CN202120119763U CN214151814U CN 214151814 U CN214151814 U CN 214151814U CN 202120119763 U CN202120119763 U CN 202120119763U CN 214151814 U CN214151814 U CN 214151814U
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Abstract
The utility model relates to an intelligent burglary-resisting door video fingerprint entrance guard's device, concretely relates to burglary-resisting door entrance guard's device and circuit that uses thereof, this circuit include CPU main control circuit and be used for the power supply circuit of power supply, CPU main control circuit's input is connected with network camera module circuit, wireless WIFI module circuit, fingerprint collection identification circuit, 16 digit keyboard circuit and doorbell calling control circuit, CPU main control circuit's output is connected with LCD liquid crystal display circuit, 433MHz wireless transmitting circuit and bee calling organ prompt tone circuit. The problem of the intelligent degree of security door lock that uses is low in the existing market, can not carry out remote switch is solved.
Description
Technical Field
The utility model relates to an intelligent burglary-resisting door video fingerprint entrance guard's device, concretely relates to burglary-resisting door entrance guard's device and circuit that uses thereof.
Background
The door lock products of home/office buildings in the current market mainly adopt the mechanical lock and the electric control lock technology, and generally adopt the key unlocking, the password unlocking, the remote control unlocking, the fingerprint identification unlocking and the like which are used by people on site; the confidentiality of unlocking by using a key, password unlocking and remote unlocking is not high, and a special tool and a special decoding technology for opening the bag can cause a plurality of potential safety hazards; the fingerprint identification unlocking safety is good, but the cost is high, the functions of the existing market door locks are single, the automation/intelligence degree is low, the remote unlocking/closing door locks basically belong to the blank, and particularly, the problem of visual effect is difficult to solve during remote operation.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a burglary-resisting door entrance guard's device and circuit that uses thereof solves the burglary-resisting door lock intelligent degree that uses on the existing market low, can not carry out remote switch's problem.
For solving the above technical problem, the utility model discloses a first technical scheme as follows:
the utility model provides a circuit that burglary-resisting door entrance guard's device used, includes CPU master control circuit and is used for the power supply circuit, CPU master control circuit's input is connected with network camera module circuit, wireless WIFI module circuit, fingerprint collection identification circuit, 16 digit keyboard circuit and doorbell calling control circuit, CPU master control circuit's output links to each other with network camera module circuit, fingerprint collection identification circuit, LCD liquid crystal display screen display circuit, 433MHz wireless transmitting circuit and bee calling organ prompt tone circuit.
The further technical scheme is that the CPU main control circuit comprises a CPU main control circuit and a power supply circuit, wherein the CPU main control circuit comprises a singlechip U1, a resistor R6, a resistor R10, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4 and a crystal oscillator X1;
one end of the resistor R6 is connected with the 4 th pin of the singlechip U1, and the other end of the resistor R6 is grounded;
one end of the resistor R10 is connected with the 9 th pin of the singlechip U1, and the other end of the resistor R10 is connected with a power circuit;
one end of the capacitor C1 is connected with the 38 th pin of the singlechip U1, and the other end of the capacitor C1 is grounded;
one end of the capacitor C2 is connected with the 38 th pin of the singlechip U1, and the other end of the capacitor C2 is connected with the 4 th pin of the singlechip U1;
one end of the capacitor C3 is connected with the 14 th pin of the singlechip U1, and the other end of the capacitor C3 is connected with the 16 th pin of the singlechip U1;
one end of the capacitor C4 is connected with the 15 th pin of the singlechip U1, and the other end of the capacitor C4 is connected with the 16 th pin of the singlechip U1;
one end of the crystal oscillator X1 is connected with the 14 th pin of the singlechip U1, and the other end of the crystal oscillator X1 is connected with the 15 th pin of the singlechip U1;
and the 16 th pin of the singlechip U1 is grounded.
Further, the network camera module circuit comprises a chip U3, a microphone MIC, a speaker Y1, a resistor R12, a resistor R13, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a built-in lens SHI and a power interface JI;
the chip U3 is connected with the single chip microcomputer U1;
one end of the microphone MIC is connected with a 43 th pin of a chip U3, the other end of the microphone MIC is grounded and is connected with one end of a horn Y1, and the other end of the horn Y1 is connected with a 33 rd pin of a chip U3;
one end of the resistor R12 is connected with the 42 th pin of the chip U3, and the other end of the resistor R12 is connected with the 30 th pin of the chip U3;
one end of the resistor R13 is connected with a 29 pin of the chip U3, and the other end of the resistor R13 is grounded;
one end of the capacitor C8 is connected with the 38 th pin of the chip U3, and the other end of the capacitor C8 is connected with one end of the horn Y1;
one end of the capacitor C9 is connected with the 26 th pin of the chip U3, and the other end is grounded
One end of the capacitor C10 is connected with the 30 th pin of the chip U3, and the other end of the capacitor C10 is grounded and connected with the 31 st pin of the chip U3;
the positive terminal of the capacitor C11 is connected with the 30 th pin of the chip U3, and the other terminal is grounded.
Further, the wireless WIFI module circuit includes a video wireless module U2 and an antenna T1, the video wireless module U2 is connected to a chip U3, and the antenna T1 is connected to a video wireless module U2.
The fingerprint acquisition and identification circuit further comprises a fingerprint acquisition module U4, a capacitor C6 and a capacitor C7;
fingerprint acquisition module U4's the ground connection of 1 st pin, fingerprint acquisition module U4's 2 nd pin, 3 rd pin and 6 th pin link to each other with singlechip U1's 8 th pin, 5 th pin and 22 th pin respectively, and fingerprint acquisition module U4's 4 th pin is connected power supply circuit, condenser C6's anodal 7 th pin with fingerprint acquisition module U4 links to each other, condenser C6's negative pole ground connection, condenser C7's one end links to each other with fingerprint acquisition module U4's 7 th pin, and the other end links to each other with condenser C6's negative pole.
The further technical scheme is that the LCD display circuit comprises an LCD module and a capacitor C5, the LCD module is connected with the single chip microcomputer U1, one end of the capacitor C5 is connected with the No. 2 pin, the No. 6 pin and the No. 7 pin of the LCD module, and the other end of the capacitor C5 is grounded.
The technical scheme is that the buzzer prompt tone circuit comprises a resistor R23, a resistor R24, a resistor R25, a resistor R26, a triode Q1, a triode Q2 and a buzzer Y2, one end of the resistor R23 is connected with the single chip microcomputer U1, the other end of the resistor R23 is connected with the resistor R24 and the base of the triode Q1, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected with one end of the resistor R25, the other end of the resistor R25 is connected with one end of the resistor R26 and the base of the triode Q2, the other end of the resistor R26 is connected with the emitter of the triode Q2, the collector of the triode Q2 is connected with one end of the buzzer Y2, and the other end of the buzzer Y2 is grounded.
The second technical scheme adopted by the invention is as follows:
a security door access control device comprises a circuit used by the security door access control device.
Compared with the prior art, the utility model discloses one of following beneficial effect has at least:
1. the utility model discloses have two-way automatic control and monitor function, can utilize wireless WIFI module circuit and 433MHz wireless transmitting circuit to carry out remote control, utilize the on-off control command data that remote control device (cell-phone etc.) sent to be connected to entrance guard's device, and then carry out long-range opening or close the lock, when the lock is opened or is closed the state, can be with on-the-spot video image automatic connection to user's cell-phone, realize the effect that long-range control is just like field operation;
2. the utility model can be opened by password or fingerprint identification on site, and the remote control device can check the site picture and then determine whether to unlock the lock, thus realizing the unlocking of both the remote end and the site;
3. the utility model has the function of an indoor visual doorbell, is very convenient to observe, and has the functions of arming/disarming, time filing/inquiring and the like;
4. the utility model has the function of preventing special skill from unlocking;
5. the utility model discloses low cost and stability are high.
Drawings
Fig. 1 is a block diagram of a circuit used in the access control device of the present invention.
Fig. 2 is a schematic circuit diagram of a circuit used in the access control device of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Fig. 1-2 show an embodiment of the access control device and the circuit used therein.
Example 1:
as shown in fig. 1, this embodiment provides a circuit that burglary-resisting door entrance guard's device used, including CPU master control circuit and the power supply circuit who is used for the power supply, CPU master control circuit's input is connected with network camera module circuit, wireless WIFI module circuit, fingerprint collection identification circuit, 16 digit keyboard circuit and doorbell call control circuit, CPU master control circuit's output and network camera module circuit, fingerprint collection identification circuit, LCD liquid crystal display screen display circuit, 433MHz wireless transmitting circuit and buzzer prompt tone circuit link to each other.
As shown in fig. 2, the CPU master control circuit includes a CPU master control circuit including a single chip microcomputer U1, a resistor R6, a resistor R10, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, and a crystal oscillator X1; one end of the resistor R6 is connected with the 4 th pin of the singlechip U1, and the other end of the resistor R6 is grounded; one end of the resistor R10 is connected with the 9 th pin of the singlechip U1, and the other end of the resistor R10 is connected with a power supply circuit; one end of the capacitor C1 is connected with the 38 th pin of the singlechip U1, and the other end of the capacitor C1 is grounded; one end of the capacitor C2 is connected with the 38 th pin of the singlechip U1, and the other end of the capacitor C2 is connected with the 4 th pin of the singlechip U1; one end of the capacitor C3 is connected with the 14 th pin of the singlechip U1, and the other end of the capacitor C3 is connected with the 16 th pin of the singlechip U1; one end of the capacitor C4 is connected with the 15 th pin of the singlechip U1, and the other end of the capacitor C4 is connected with the 16 th pin of the singlechip U1; one end of the crystal oscillator X1 is connected with the 14 th pin of the singlechip U1, and the other end of the crystal oscillator X1 is connected with the 15 th pin of the singlechip U1; the 16 th pin of the singlechip U1 is grounded.
The 11 th pin of the singlechip U1 is connected with an operation indicator light LED1, and the other end of the operation indicator light LED1 is grounded. The 16-bit digital keyboard circuit comprises a resistor R1, a resistor R2, a resistor R3, a resistor R4, a trigger switch K1, a trigger switch K2, a trigger switch K3, a trigger switch K4, a trigger switch K5, a trigger switch K6, a trigger switch K7, a trigger switch K8, a trigger switch K9, a trigger switch K10, a trigger switch K11, a trigger switch K12, a trigger switch K13, a trigger switch K14, a trigger switch K15 and a trigger switch K16, wherein transverse lines and a water bank of the 16-bit digital keyboard circuit are respectively connected with a 23 th pin, a 24 th pin, a 32 th pin, a 33 rd pin, a 34 th pin, a 35 th pin, a 36 th pin and a 37 th pin of a single chip U1.
The network camera module circuit comprises a chip U3, a microphone MIC, a loudspeaker Y1, a resistor R12, a resistor R13, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a built-in lens SHI and a power interface JI; the chip U3 is connected with the singlechip U1; one end of the microphone MIC is connected with the 43 rd pin of the chip U3, the other end of the microphone MIC is grounded and is connected with one end of the horn Y1, and the other end of the horn Y1 is connected with the 33 rd pin of the chip U3; one end of the resistor R12 is connected with the 42 th pin of the chip U3, and the other end of the resistor R12 is connected with the 30 th pin of the chip U3; one end of the resistor R13 is connected with a pin 29 of the chip U3, and the other end of the resistor R13 is grounded; one end of the capacitor C8 is connected with the 38 th pin of the chip U3, and the other end of the capacitor C8 is connected with one end of the horn Y1; one end of the capacitor C9 is connected with the 26 th pin of the chip U3, one end of the grounded capacitor C10 at the other end is connected with the 30 th pin of the chip U3, and the other end is grounded and connected with the 31 th pin of the chip U3; the positive terminal of the capacitor C11 is connected to the 30 th pin of the chip U3, and the other terminal is grounded.
The chip U3 adopts a 3158C +9712 chip, and the 54 th pin and the 55 th pin of the chip U3 are also connected with a power interface J1.
Wireless WIFI module circuit includes video wireless module U2 and antenna T1, and video wireless module U2 links to each other with chip U3, and antenna T1 links to each other with video wireless module U2.
The fingerprint acquisition identification circuit comprises a fingerprint acquisition module U4, a capacitor C6 and a capacitor C7; fingerprint acquisition module U4's the ground connection of 1 st pin, fingerprint acquisition module U4's 2 nd pin, 3 rd pin and 6 th pin respectively with singlechip U1's 8 th pin, 5 th pin and 22 nd pin link to each other, fingerprint acquisition module U4's 4 th pin connection power supply circuit, condenser C6's anodal 7 th pin with fingerprint acquisition module U4 links to each other, condenser C6's negative pole ground connection, condenser C7's one end links to each other with fingerprint acquisition module U4's 7 th pin, the other end links to each other with condenser C6's negative pole.
The LCD liquid crystal display circuit comprises an LCD module and a capacitor C5, the LCD module is connected with the single chip microcomputer U1, one end of the capacitor C5 is connected with the No. 2 pin, the No. 6 pin and the No. 7 pin of the LCD module, and the other end of the capacitor C5 is grounded.
The buzzer warning tone circuit comprises a resistor R23, a resistor R24, a resistor R25, a resistor R26, a triode Q1, a triode Q2 and a buzzer Y2, one end of the resistor R23 is connected with the single chip microcomputer U1, the other end of the resistor R23 is connected with the resistor R24 and the base of the triode Q1, the emitter of the triode Q1 is grounded, the collector of the triode Q1 is connected with one end of the resistor R25, the other end of the resistor R25 is connected with one end of the resistor R26 and the base of the triode Q2, the other end of the resistor R26 is connected with the emitter of the triode Q2, the collector of the triode Q2 is connected with one end of the buzzer Y2, and the other end of the buzzer Y2 is grounded.
The doorbell key K1, the microphone MIC and the loudspeaker Y1 can form a doorbell call control circuit, and the doorbell key K1 is connected with the 8 th pin of the single chip microcomputer U1.
The 433MHz wireless transmitting circuit comprises a resistor R5, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a triode Q3, a light-emitting tube LED2, an integrated circuit U7, an integrated circuit U8 and an integrated circuit U9, wherein a 1 st pin of the integrated circuit U9 is connected with a 2 nd pin of a singlechip U1 through the resistor R22.
Wherein the power supply circuit comprises a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a capacitor C16, a capacitor C17, a diode V1, an inductor L1, an integrated circuit U5 and an integrated circuit U6, thereby outputting a power supply of +12V, +5V, +3.3V, and thereby supplying power.
The single-chip microcomputer U1 is a 12C5A60S2STC single-chip microcomputer, the integrated circuit U5 adopts LM2576, the integrated circuit U6 adopts D133AL, the integrated circuit U7 is a wireless transmitting module, the integrated circuit U8 adopts PT2262, the integrated circuit U9 adopts LM2576, and the LCD module adopts LCM 12232J; the resistances of the resistors used were respectively: the resistor R1 is 5.1K, the resistor R2 is 5.1K, the resistor R3 is 5.1K, the resistor R4 is 5.1K, the resistor R5 is 5.1K, the resistor R6 is 4.7K, the resistor R7 is 4.7K, the resistor R8 is 5.1K, the resistor R9 is 5.1K, the resistor R10 is 5.1K, the resistor R11 is 1K, the resistor R12 is 82K, the resistor R13 is 51K, the resistor R9 is 1.5M, the resistor R15 is 27K, the resistor R16 is 1K, the resistor R17 is 2K, the resistor R18 is 10K, the resistor R19 is 10K, the resistor R20 is 7K, the resistor R22 is 22K, and the resistor R22 is 22K; the capacitances of the capacitors used were respectively: capacitor C1 ═ 104PF, capacitor C2 ═ 100 μ F, capacitor C3 ═ 27PF, capacitor C4 ═ 27PF, capacitor C5 ═ 104PF, capacitor C6 ═ 470 μ F, capacitor C7 ═ 0.1 μ F, capacitor C8 ═ 0.1 μ F, capacitor C9 ═ 0.1 μ F, capacitor C10 ═ 0.1 μ F, capacitor C11 ═ 220 μ F, capacitor C12 ═ 470 μ F, capacitor C13 ═ 0.1 μ F, capacitor C14 ═ 0.1 μ F, capacitor C15 ═ 1000 μ F, capacitor C16 ═ 0.1 μ F, capacitor C17 ═ 470 μ F; diode V1 ═ RS 360; the diode LED1 and the diode LED2 are both Φ 5 red, the inductance L1 is 100 μ H, and the crystal oscillator X1 is 11.592 MHz.
Example 2:
the embodiment provides a security door access control device, and the security door access control device in the embodiment includes the circuit used by the security door access control device described in the foregoing embodiment 1.
This burglary-resisting door entrance guard has advantage at least:
1. the utility model discloses have two-way automatic control and monitor function, can utilize wireless WIFI module circuit and 433MHz wireless transmitting circuit to carry out remote control, utilize the on-off control command data that remote control device (cell-phone etc.) sent to be connected to entrance guard's device, and then carry out long-range opening or close the lock, when the lock is opened or is closed the state, can be with on-the-spot video image automatic connection to user's cell-phone, realize the effect that long-range control is just like field operation;
2. the utility model discloses can adopt password or fingerprint identification to open a post at the scene, long-range can confirm whether to unblank after looking over the scene picture through the cell-phone again, through sliding the cell-phone interface, long-range scene video alright be connected to the cell-phone, look over the lock and unlock the key just can unblank by the motor after the scene video image picture of lock, realize that far-end and scene can unblank;
3. the utility model has the function of an indoor visual doorbell, is very convenient to observe, and has the functions of arming/disarming, time filing/inquiring and the like;
4. the utility model has the advantages of special unlocking prevention, pick prevention, smash prevention and the like;
5. the utility model discloses low cost and stability are high.
Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (8)
1. The utility model provides a circuit that burglary-resisting door entrance guard's device used which characterized in that: including CPU master control circuit and be used for the power supply circuit, CPU master control circuit's input is connected with network camera module circuit, wireless WIFI module circuit, fingerprint collection identification circuit, 16 digit keyboard circuit and doorbell calling control circuit, CPU master control circuit's output links to each other with network camera module circuit, fingerprint collection identification circuit, LCD display circuit, 433MHz wireless transmitting circuit and bee calling organ prompt tone circuit.
2. The circuit used in the anti-theft gate access control device of claim 1, wherein: the CPU main control circuit comprises a CPU main control circuit and a power supply circuit, wherein the CPU main control circuit comprises a singlechip U1, a resistor R6, a resistor R10, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4 and a crystal oscillator X1;
one end of the resistor R6 is connected with the 4 th pin of the singlechip U1, and the other end of the resistor R6 is grounded;
one end of the resistor R10 is connected with the 9 th pin of the singlechip U1, and the other end of the resistor R10 is connected with a power circuit;
one end of the capacitor C1 is connected with the 38 th pin of the singlechip U1, and the other end of the capacitor C1 is grounded;
one end of the capacitor C2 is connected with the 38 th pin of the singlechip U1, and the other end of the capacitor C2 is connected with the 4 th pin of the singlechip U1;
one end of the capacitor C3 is connected with the 14 th pin of the singlechip U1, and the other end of the capacitor C3 is connected with the 16 th pin of the singlechip U1;
one end of the capacitor C4 is connected with the 15 th pin of the singlechip U1, and the other end of the capacitor C4 is connected with the 16 th pin of the singlechip U1;
one end of the crystal oscillator X1 is connected with the 14 th pin of the singlechip U1, and the other end of the crystal oscillator X1 is connected with the 15 th pin of the singlechip U1;
and the 16 th pin of the singlechip U1 is grounded.
3. The circuit used in the anti-theft gate control device according to claim 2, characterized in that: the network camera module circuit comprises a chip U3, a microphone MIC, a loudspeaker Y1, a resistor R12, a resistor R13, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a built-in lens SHI and a power interface JI;
the chip U3 is connected with the single chip microcomputer U1;
one end of the microphone MIC is connected with a 43 th pin of a chip U3, the other end of the microphone MIC is grounded and is connected with one end of a horn Y1, and the other end of the horn Y1 is connected with a 33 rd pin of a chip U3;
one end of the resistor R12 is connected with the 42 th pin of the chip U3, and the other end of the resistor R12 is connected with the 30 th pin of the chip U3;
one end of the resistor R13 is connected with a 29 pin of the chip U3, and the other end of the resistor R13 is grounded;
one end of the capacitor C8 is connected with the 38 th pin of the chip U3, and the other end of the capacitor C8 is connected with one end of the horn Y1;
one end of the capacitor C9 is connected with the 26 th pin of the chip U3, and the other end is grounded
One end of the capacitor C10 is connected with the 30 th pin of the chip U3, and the other end of the capacitor C10 is grounded and connected with the 31 st pin of the chip U3;
the positive terminal of the capacitor C11 is connected with the 30 th pin of the chip U3, and the other terminal is grounded.
4. The circuit used in the anti-theft gate control device according to claim 3, characterized in that: the WIFI module circuit comprises a video wireless module U2 and an antenna T1, the video wireless module U2 is connected with a chip U3, and the antenna T1 is connected with a video wireless module U2.
5. The circuit used in the anti-theft gate control device according to claim 2, characterized in that: the fingerprint acquisition identification circuit comprises a fingerprint acquisition module U4, a capacitor C6 and a capacitor C7;
fingerprint acquisition module U4's the ground connection of 1 st pin, fingerprint acquisition module U4's 2 nd pin, 3 rd pin and 6 th pin link to each other with singlechip U1's 8 th pin, 5 th pin and 22 th pin respectively, and fingerprint acquisition module U4's 4 th pin is connected power supply circuit, condenser C6's anodal 7 th pin with fingerprint acquisition module U4 links to each other, condenser C6's negative pole ground connection, condenser C7's one end links to each other with fingerprint acquisition module U4's 7 th pin, and the other end links to each other with condenser C6's negative pole.
6. The circuit used in the anti-theft gate control device according to claim 2, characterized in that: the LCD liquid crystal display circuit comprises an LCD module and a capacitor C5, the LCD module is connected with the single chip microcomputer U1, one end of the capacitor C5 is connected with the No. 2 pin, the No. 6 pin and the No. 7 pin of the LCD module, and the other end of the capacitor C5 is grounded.
7. The circuit used in the anti-theft gate control device according to claim 2, characterized in that: the buzzer prompt tone circuit comprises a resistor R23, a resistor R24, a resistor R25, a resistor R26, a triode Q1, a triode Q2 and a buzzer Y2, wherein one end of the resistor R23 is connected with the single chip microcomputer U1, the other end of the resistor R23 is connected with bases of the resistor R24 and the triode Q1, an emitter of the triode Q1 is grounded, a collector of the triode Q1 is connected with one end of the resistor R25, the other end of the resistor R25 is connected with one end of the resistor R26 and a base of the triode Q2, the other end of the resistor R26 is connected with an emitter of the triode Q2, a collector of the triode Q2 is connected with one end of the buzzer Y2, and the other end of the buzzer Y2 is grounded.
8. The utility model provides a burglary-resisting entrance guard's device which characterized in that: comprising a circuit for use in the security door access device of any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120119763.3U CN214151814U (en) | 2021-01-18 | 2021-01-18 | Security door access control device and circuit used by same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120119763.3U CN214151814U (en) | 2021-01-18 | 2021-01-18 | Security door access control device and circuit used by same |
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| Publication Number | Publication Date |
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| CN214151814U true CN214151814U (en) | 2021-09-07 |
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| CN202120119763.3U Active CN214151814U (en) | 2021-01-18 | 2021-01-18 | Security door access control device and circuit used by same |
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- 2021-01-18 CN CN202120119763.3U patent/CN214151814U/en active Active
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