CN108091026A - A kind of two-wire system access control system - Google Patents
A kind of two-wire system access control system Download PDFInfo
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- CN108091026A CN108091026A CN201810057959.7A CN201810057959A CN108091026A CN 108091026 A CN108091026 A CN 108091026A CN 201810057959 A CN201810057959 A CN 201810057959A CN 108091026 A CN108091026 A CN 108091026A
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- 230000005764 inhibitory process Effects 0.000 claims abstract description 63
- 230000009466 transformation Effects 0.000 claims abstract description 15
- 230000005611 electricity Effects 0.000 claims description 10
- 238000010200 validation analysis Methods 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims 1
- 230000007717 exclusion Effects 0.000 abstract description 3
- 230000008439 repair process Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00944—Details of construction or manufacture
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/20—Individual registration on entry or exit involving the use of a pass
Abstract
The invention discloses a kind of two-wire system access control systems, gate inhibition's host module, electric lock module, exit button module and power module include two bars connecting lines, it is connected with each other between modules by two bars connecting lines with parallel way, all modules need to only draw two signal connecting lines, due to being equipped with polarity transformation circuits in modules, prevent outside line is reversed from circuit being caused to damage, therefore two signal connecting lines do not have point of polarity, the each equipment of system is linked together in parallel by two signal connecting lines, not polarity, regardless of color, the order for exchanging both threads nor affects on function；And using after two-wire system, there is no the problem of wrong line, wiring correctness debugging need not be carried out substantially.Simultaneously using after two-wire system, as long as possessing the people of junior electrician knowledge, the exclusion of line fault can be carried out without specification, reduces the difficulty and cost of repair.
Description
Technical field
The present invention relates to access control system field, espespecially a kind of two-wire system access control system.
Background technology
In current gate inhibition field, an independent access control system generally at least by gate inhibition's host, magnetic key operated lock (or electricity
Mortise lock etc.), exit button and power supply four equipment composition, but need to link together by several conducting wires between each equipment,
Power supply and signal transmission could be carried out, realizes the control function of system, final purpose is to swipe the card on gate inhibition's host or other
Mode opens electric lock, completes the function of gate inhibition.Since equipment is produced by producer, the quality of individual equipment operation takes completely
It certainly in producer, has little or nothing to do with user, however, a system being made of multiple equipment, final running quality quality
Project installation and wiring are additionally depended on, producer is simultaneously not involved in this process, and most after-sale service problem is not due to produce
Quality problem, but as caused by engineering wiring grommet section.Current present situation is almost all of gate inhibition's host and corollary equipment
More lead-out wires is required for be connected with system, and is unable to wrong or connects less, otherwise whole system cisco unity malfunction.In the market
Simply do not allow error-prone access control system again there are no a kind of wiring, be required for qualified installation person that could complete entire gate inhibition system
The wiring of system and debugging efforts are unfavorable for the popularization and application of gate inhibition's product.
In conclusion the access control system of existing technology has the disadvantages that：1. gate inhibition's host lead-out wire is not easy to know too much
Other problem；2. the problem of gate inhibition's host wiring error post debugging is difficult；3. the problem of after-sales service is difficult.
The content of the invention
To solve the above problems, the present invention provides a kind of two-wire system access control system, be effectively reduced cable wiring manufacture into
This and installation personnel technology require, so as to reduce the cost of entire access control system.
To achieve the above object, the technical solution adopted by the present invention is：A kind of two-wire system access control system, including gate inhibition
Host module, electric lock module, exit button module and power module, gate inhibition's host module, electric lock module, exit button mould
Block and power module include two bars connecting lines, mutual with parallel way by two bars connecting lines between modules
The circuit that connection, wherein modules are made up of two bars connecting lines is two-wire system system line；
Wherein described gate inhibition's host module, electric lock module, polarity transformation circuits are equipped in exit button module, power supply carries
Ripple modulation-demodulation circuit and MCU；Wherein gate inhibition's host module, electric lock module, the Power Carrier modulation in exit button module
Demodulator circuit carries out bi-directional digital communication with the MCU of respective modules and connects, and one end and the power supply of the polarity transformation circuits carry
Ripple modulation-demodulation circuit is electrically connected, and the other end is connected by two bars connecting lines with two-wire system system line；It is wherein described
MCU in gate inhibition's host module is also associated with input validation unit, the exit button mould MCU in the block be also associated with going out by
Button unit, the electric lock mould MCU in the block are also associated with switch unit；When exit button unit or input validation unit are sent out
Request signal is locked, the MCU in gate inhibition's host module sends unlocking signal to electric lock mould MCU in the block, the electric lock module
In MCU control and driving switch unit unlock.
Specifically, gate inhibition's host module, electric lock module, be equipped with indicator light, the instruction in exit button module
Lamp and the MCU of respective modules are electrically connected.
Specifically, switch unit includes current driving circuit, electromagnetic coil, door status switch, the door sensor in electric lock module
Switch is electrically connected with electric lock mould MCU in the block, and the current driving circuit is connected with electric lock mould MCU in the block, the other end and
One end of electromagnetic coil is electrically connected, and the other end of the electromagnetic coil is connected to polarity transformation circuits, Power Carrier modulatedemodulate
Between tune circuit.
Specifically, the input validation unit includes numeric keypad, EM card reading circuits, HID card reading circuits, IC Card Readers electricity
Road, the numeric keypad, EM card reading circuits, HID card reading circuits, IC card reading circuits with the MCU in gate inhibition's host module
It is electrically connected.
Specifically, the MCU in gate inhibition's host module be also associated with buzzer, memory, dismantling-proof alarming device, bluetooth/
WiFi connection circuits.
Specifically, be both provided in gate inhibition's host module, electric lock module, exit button module low-pass filter circuit with
And voltage-stabilizing output circuit；Wherein described low-pass filter circuit includes the first inductance (L1), first resistor (R1), the 3rd capacitance
(C3), the 4th capacitance (C4)；The regulator circuit output circuit includes the first control chip (U1), the 5th capacitance (C5), the 6th
Capacitance (C6)；The polarity transformation circuits include the first diode (D1), the second diode (D2), the 3rd diode (D3), the
Four diodes (D4)；The Power Carrier modulation-demodulation circuit includes second resistance (R2), 3rd resistor (R3), the first triode
(Q1), the 5th diode (D5), the first capacitance (C1), the 4th resistance (R4), the second capacitance (C2), the 5th resistance (R5), the 6th
Resistance (R6), the second triode (Q2), the 7th resistance (R7)；
The plus earth of wherein the first diode (D1) and the 3rd diode (D3), first diode (D1) are born
Pole is connected with the anode of the second diode (D2), and the cathode of the 3rd diode (D3) and the anode of the 4th diode (D4) connect
It connecing, the cathode of second diode (D2) is connected with the cathode of the 4th diode (D4), and the one of the two bars connecting line
The cathode respectively with the first diode (D1) and the 3rd diode (D3) is held to be connected；The cathode of second diode (D2) passes through
One inductance (L1) is connected with one end of the 3rd capacitance (C3), the other end ground connection of the 3rd capacitance (C3)；4th diode (D4)
Cathode is connected by first resistor (R1) with one end of the 3rd capacitance (C3), the other end ground connection of the 3rd capacitance (C3)；Two or two
The cathode of pole pipe (D2) is connected by the first inductance (L1) with one end of the 4th capacitance (C4), another termination of the 4th capacitance (C4)
Ground；The IN pins of wherein described first control chip (U1) are connected with one end of the 4th capacitance (C4), the first control chip
(U1) GND pin ground connection, the OUT pins of the first control chip (U1) are grounded by the 5th capacitance (C5), and described first
The OUT pins of control chip U1 are grounded by the 6th capacitance (C6)；
The cathode of wherein described 4th diode (D4) passes through 3rd resistor (R3) and the collector of the first triode (Q1)
Connection, the base stage of first triode (Q1) are connected with one end of second resistance (R2), and the other end of second resistance (R2) is defeated
Go out control signal；
The anode of wherein described 5th diode (D5) is connected with the cathode of the 4th diode (D4), the 5th diode (D5)
Cathode be connected by the first capacitance (C1) with the emitter of the first triode (Q1), the cathode of the 5th diode (D5) leads to
The 4th resistance (R4) is crossed to be connected with the emitter of the first triode (Q1)；One end and the five or two of wherein described second capacitance (C2)
The cathode connection of pole pipe (D5), the other end is connected with one end of the 5th resistance (R5), the other end of the 5th resistance (R5) and
The base stage connection of second triode (Q2), the emitter of first triode (Q1) pass through the 6th resistance (R6) and the two or three pole
Manage the base stage connection of (Q2), the emitter of first triode (Q1) and the emitter ground connection of the second triode (Q2), institute
The one end for stating the 7th resistance (R7) is connected with the OUT pins of the first control chip U1, the other end and second of the 7th resistance (R7)
The collector connection of triode (Q2), and the collector of second triode (Q2) receives control signal.
Specifically, the power module includes DC power supply, wherein low-pass filter circuit, first in low-pass filter circuit
Inductance (L1) and first resistor (R1) are parallel with one another, and the anode of the DC power supply passes through the first inductance (L1) and wherein one letter
The connection of number connecting line, the cathode ground connection of the DC power supply, another bars connecting line ground connection.
Specifically, the DC power supply is 12V DC power supply.
The beneficial effects of the present invention are：Gate inhibition's host module, electric lock module, exit button module and power module
Include two bars connecting lines, be connected with each other between modules by two bars connecting lines with parallel way, wherein respectively
The circuit that a module is made up of two bars connecting lines is two-wire system system line；All modules need to only draw two signals
Connecting line due to being equipped with polarity transformation circuits in modules, prevents outside line is reversed from circuit being caused to damage, therefore
Two signal connecting lines and dividing without polarity, each equipment of system is connected in parallel by two signal connecting lines
Together, it appears that be as power supply and meanwhile to each equipment directly power supply as simple connection mode, after two-wire system, no
Polarity, regardless of color, the order for exchanging both threads nor affects on function；And using after two-wire system, there is no wrong lines
Problem need not carry out wiring correctness debugging substantially.After using two-wire system simultaneously, as long as possessing the people of junior electrician knowledge,
The exclusion of line fault can be carried out without specification, reduces the difficulty and cost of repair.
Description of the drawings
Fig. 1 is structure diagram of the present invention；
Fig. 2 is gate inhibition's host module structure diagram in the present invention.
Fig. 3 is exit button modular structure block diagram in the present invention.
Fig. 4 is electric lock modular structure block diagram in the present invention.
Fig. 5 is power module structure block diagram in the present invention.
Fig. 6 is that modules share circuit diagram in the present invention.
Drawing reference numeral explanation：1. gate inhibition's host module；2. exit button module；3. electric lock module；4. power module；11.
Polarity transformation circuits；12. Power Carrier modulation-demodulation circuit；13.MCU；14. indicator light；15. voltage-stabilizing output circuit；16. low pass
Filter circuit；17. two-wire system system line；110. numeric keypad；111.EM card reading circuit；112.HID card reading circuit；113.IC
Card reading circuit；114. memory；115. dismantling-proof alarming device；116. buzzer；117. wireless connection circuit；210. exit button lists
Member；310. door status switch；311. current driving circuit；312. electromagnetic coil；410. DC power supply.
Specific embodiment
It please refers to Fig.1 shown in -6, the present invention is on a kind of two-wire system access control system, a kind of two-wire system access control system
System, including gate inhibition's host module 1, electric lock module 3, exit button module 2 and power module 4, gate inhibition's host module 1, electricity
Lock module 3, exit button module 2 and power module 4 include two bars connecting lines, pass through two bars between modules
Connecting line is connected with each other with parallel way, and the circuit that wherein modules are made up of two bars connecting lines is two-wire system system
Circuit 17；
Wherein described gate inhibition's host module 1, electric lock module 3, be equipped in exit button module 2 polarity transformation circuits 11,
Power Carrier modulation-demodulation circuit 12 and MCU13；Wherein gate inhibition's host module 1, electric lock module 3, in exit button module 2
Power Carrier modulation-demodulation circuit 12 with the MCU13 of respective modules carry out bi-directional digital communication connect, the reversal
One end of circuit 11 is electrically connected with Power Carrier modulation-demodulation circuit 12, and the other end passes through two bars connecting lines and two-wire system
System line 17 connects；MCU13 in wherein described gate inhibition's host module 1 is also associated with input validation unit, it is described go out by
MCU13 in button module 2 is also associated with exit button unit 210, and it is single that the MCU13 in the electric lock module 3 is also associated with switch
Member；When exit button unit 210 or input validation unit send unlocking request signal, the MCU13 in gate inhibition's host module 1
Send the MCU13 in unlocking signal to electric lock module 3, the MCU13 controls and driving switch unit in the electric lock module 3 are opened
Lock.
It please refers to Fig.1 shown in -6, gate inhibition's host module 1, electric lock module 3, exit button module 2 and power module 4
Include two bars connecting lines, be connected with each other between modules by two bars connecting lines with parallel way, wherein respectively
The circuit that a module is made up of two bars connecting lines is two-wire system system line 17；All modules need to only draw two letters
Number connecting line, due to being equipped with polarity transformation circuits 11 in modules, prevents outside line is reversed from circuit being caused to damage
It is bad, therefore two signal connecting lines and without point of polarity, each equipment of system by two signal connecting lines with side in parallel
Formula links together, it appears that is as power supply while to simple connection mode as each equipment directly power supply, using two lines
After system, not polarity, regardless of color, the order for exchanging both threads nor affects on function；And using after two-wire system, there is no connect
The problem of wrong line, need not carry out wiring correctness debugging substantially.After using two-wire system simultaneously, as long as possessing junior electrician knowledge
People, the exclusion of line fault can be carried out without specification, reduces the difficulty and cost of repair.
Refer to shown in Fig. 2-4, specifically, gate inhibition's host module 1, electric lock module 3, in exit button module 2
Equipped with indicator light 14, the indicator light 14 and the MCU13 of respective modules are electrically connected.Gate inhibition's host module 1, electric lock module 3,
Exit button module 2 is provided with indicator light 14, when the receiving in gate inhibition's host module 1, electric lock module 3, exit button module 2 or
When sending control signal, indicator light 14 can be lighted.
It refers to shown in Fig. 4, specifically, switch unit includes current driving circuit 311, electromagnetic coil in electric lock module 3
312nd, door status switch 310, the door status switch 310 are electrically connected with the MCU13 in electric lock module 3, the current driving circuit
311 are connected with the MCU13 in electric lock module 3, and one end of the other end and electromagnetic coil 312 is electrically connected, the electromagnetic coil 312
The other end be connected between polarity transformation circuits 11, Power Carrier modulation-demodulation circuit 12.Wherein MCU13 in electric lock module 3
During the unlocking signal that detection gate inhibition host module 1 is sent, the indicator light 14 in electric lock module 3 is lighted, while is driven by electric current
Circuit 311 controls electromagnetic coil 312 to be powered or power off, and realizes that electric lock is turned on and off, the MCU13 detection doors in electric lock module 3
Magnetic switch 310 can obtain door state signal, feed back to gate inhibition's host module 1 by Power Carrier modulation-demodulation circuit 12, as
Alarm or the foundation for prompting of closing the door.
Refer to shown in Fig. 2, specifically, the input validation unit include numeric keypad 110, EM card reading circuits 111,
HID card reading circuits 112, IC card reading circuits 113, the numeric keypad 110, EM card reading circuits 111, HID card reading circuits 112, IC
Card reading circuit 113 is electrically connected with the MCU13 in gate inhibition's host module 1.A variety of unlocking methods are equipped in the present invention,
Wherein it can realize multi-functional unlocking by input numerical ciphers or by reading EM cards or HID cards or IC card.
It refers to shown in Fig. 2, specifically, the MCU13 in gate inhibition's host module 1 is also associated with buzzer 116, storage
Device 114, dismantling-proof alarming device 115, wireless connection circuit 117, wherein the wireless connection circuit 117 is bluetooth or WiFi.Wherein
For storing unlocking information, dismantling-proof alarming device 115 can be used for alarming memory 114, wherein optional bluetooth or WiFi realize hand
Machine control function, when swiping the card or inputting password, the MCU13 of door access machine module passes through Power Carrier modulation-demodulation circuit 12 to two
Unlocking signal is exported on line system line 17, notice electric lock is turned on and off.
It refers to shown in Fig. 2-6, specifically, in gate inhibition's host module 1, electric lock module 3, exit button module 2
It is provided with low-pass filter circuit 16 and voltage-stabilizing output circuit 15；Wherein described low-pass filter circuit 16 include the first inductance L1,
First resistor R1, the 3rd capacitance C3, the 4th capacitance C4；The regulator circuit output circuit includes the first control chip U1, the 5th
Capacitance C5, the 6th capacitance C6；The polarity transformation circuits 11 include the first diode D1, the second diode D2, the 3rd diode
D3, the 4th diode D4；The Power Carrier modulation-demodulation circuit 12 includes second resistance R2,3rd resistor R3, the one or three pole
Pipe Q1, the 5th diode D5, the first capacitance C1, the 4th resistance R4, the second capacitance C2, the 5th resistance R5, the 6th resistance R6, second
Triode Q2, the 7th resistance R7；
The wherein plus earth of the first diode D1 and the 3rd diode D3, the cathode of the first diode D1 and
The anode connection of two diode D2, the cathode of the 3rd diode D3 are connected with the anode of the 4th diode D4, and described second
The cathode of diode D2 is connected with the cathode of the 4th diode D4, one end of the two bars connecting line respectively with the one or two pole
The cathode of pipe D1 and the 3rd diode D3 connect；The cathode of second diode D2 passes through the first inductance L1's and the 3rd capacitance C3
One end connects, the other end ground connection of the 3rd capacitance C3；The cathode of 4th diode D4 passes through first resistor R1 and the 3rd capacitance C3
One end connection, the 3rd capacitance C3 the other end ground connection；The cathode of second diode D2 passes through the first inductance L1 and the 4th capacitance
One end connection of C4, the other end ground connection of the 4th capacitance C4；The IN pins and the 4th capacitance of wherein described first control chip U1
One end connection of C4, the GND pin ground connection of the first control chip U1, the OUT pins of the first control chip U1 pass through
5th capacitance C5 is grounded, and the OUT pins of the first control chip U1 are grounded by the 6th capacitance C6；
First control chip U1, the 5th capacitance C5, the 6th capacitance C6；Regulator circuit is formed, is that MCU13 and peripheral circuit carry
For+5V power supplys；
Wherein the first diode D1, the second diode D2, the 3rd diode D3, the 4th diode D4；Form bridge rectifier,
As reversal, prevent outside line is reversed from circuit being caused to damage, therefore after using two-wire system, there is no the problem of wrong line,
Substantially wiring correctness debugging need not be carried out.
Wherein the first inductance L1, first resistor R1, the 3rd capacitance C3, the 4th capacitance C4；Low-pass filter circuit 16 is formed, is prevented
Only outside line high frequency signal attenuation.
The cathode of wherein described 4th diode D4 is connected by 3rd resistor R3 with the collector of the first triode Q1, institute
The base stage for stating the first triode Q1 is connected with one end of second resistance R2, the other end output control signal of second resistance R2；
The anode of wherein described 5th diode D5 is connected with the cathode of the 4th diode D4, the cathode of the 5th diode D5
It is connected by the first capacitance C1 with the emitter of the first triode Q1, the cathode of the 5th diode D5 passes through the 4th resistance R4
It is connected with the emitter of the first triode Q1；One end of wherein described second capacitance C2 is connected with the cathode of the 5th diode D5,
The other end is connected with one end of the 5th resistance R5, and the other end of the 5th resistance R5 is connected with the base stage of the second triode Q2,
The emitter of the first triode Q1 is connected by the 6th resistance R6 with the base stage of the second triode Q2, first triode
The emitter of the emitter of Q1 and the second triode Q2 are grounded, and one end of the 7th resistance R7 is with the first control chip U1's
OUT pins connect, and the other end of the 7th resistance R7 is connected with the collector of the second triode Q2, and the second triode Q2
Collector receives control signal.
It referring to shown in Fig. 5 specifically, the power module 4 includes DC power supply 410, low-pass filter circuit 16, wherein
The first inductance L1 and first resistor R1 in low-pass filter circuit 16 is parallel with one another, and the anode of the DC power supply 410 passes through
One inductance L1 is connected with a wherein bars connecting line, and the cathode ground connection of the DC power supply 410, another bars connecting line connects
Ground.Specifically, the DC power supply 410 is 12V DC power supply 410.
It please refers to Fig.1 shown in -6, the control signal second resistance R2 of the wherein MCU13 of modules, 3rd resistor R3,
One triode Q1 forms output circuit to external circuit output, and the first inductance L1 of power supply carries out boosting processing to output signal,
The higher pulse voltage of output, as modulated signal, the 5th diode D5, the first capacitance C1, the 4th resistance R4, second
Capacitance C2, the 5th resistance R5, the 6th resistance R6, the second triode Q2, the detecting circuit of the 7th resistance R7 composition high-frequency signals,
Control signal on two-wire system system line 17 gives other modules MCU13 after demodulating is identified, more than, pass through two
Line system line 17 completes the information exchange between each equipment.
It please refers to Fig.1 shown in -6, the specific workflow of detailed description below two-wire system access control system：
1. when user is walked out out of gate inhibition outside gate inhibition；
Step 1：User presses exit button unit 210, and the MCU 13 of wherein exit button module 2 detects exit button
Unit 210 is pressed, and the indicator light 14 in exit button module 2 is lighted, while passes through the Power Carrier tune in exit button module 2
Demodulator circuit 12 processed exports door request signal on two-wire system system line 17；4 clamshell doors request signal of power module carries out
Boosting is handled, the higher pulse voltage of output, and exports modulated door request signal；
Step 2：Wherein described modulated door request signal is sent to gate inhibition's host by two-wire system system line 17
Module 1, while the indicator light 14 in gate inhibition's host module 1 is lighted, gate inhibition's host module 1 is by gate inhibition's host module 1
Power Carrier modulation-demodulation circuit 12 door request signal of modulation is demodulated, and the door request signal after demodulation is transmitted
MCU 13 in MCU 13 into gate inhibition's host module 1, wherein gate inhibition's host module 1 receives the enabling request letter after demodulation
After number, door opening command signal is exported on two-wire system system line 17；The power module 4 carries out output door opening command signal
Boosting is handled, the higher pulse voltage of output, and exports modulated door opening command signal；
Step 3：Wherein described modulated door opening command signal is sent to electric lock module by two-wire system system line 17
3, the indicator light 14 in electric lock module 3 is lighted, while the Power Carrier modulation-demodulation circuit 12 of electric lock module 4 is opened modulated
Door command signal demodulates, and the door request signal after demodulation is sent to the MCU 13 in electric lock module 3, wherein electric lock module
After MCU 13 in 3 receives the door opening command signal after demodulation, driving current driving circuit 311 simultaneously controls electromagnetic coil 312
Power-off realizes that electric lock is closed；MCU 13 detects door status switch 310 and obtains door state signal in electric lock module 3 simultaneously, and passes through
Power Carrier modulation-demodulation circuit 12 feeds back to gate inhibition's host module 1, the foundation as alarm or prompting of closing the door.
2. when user is come into outside gate inhibition in gate inhibition：
Step 1：User inputs correct password or by EM card reading circuits 111 or HID Card Readers electricity by numeric keypad 110
After road 112 or IC card reading circuits 113 are correctly swiped the card, the MCU 13 of wherein gate inhibition's host module 1 can get enabling please
Signal is sought, while the indicator light 14 in gate inhibition's host module 1 is lighted；The MCU 13 of wherein gate inhibition's host module 1, which can be got, to be held
After door request signal, and pass through Power Carrier modulation-demodulation circuit 12 and door opening command letter is exported on two-wire system system line 17
Number, power module 4 carries out the door opening command signal of output boosting processing, the higher pulse voltage of output, and exports modulation
Door opening command signal afterwards；
Step 2：The modulated door opening command signal is sent to electric lock module 3 by two-wire system system line 17, electricity
Indicator light 14 in lock module 3 is lighted, while the Power Carrier modulation-demodulation circuit 12 of electric lock module 4 orders modulated open the door
Signal is made to demodulate, and the door request signal after demodulation is sent to the MCU 13 in electric lock module 3, wherein in electric lock module 3
MCU 13 receive the door opening command signal after demodulation after, driving current driving circuit 311 simultaneously controls electromagnetic coil 312 disconnected
Electricity realizes that electric lock is closed；MCU 13 detects door status switch 310 and obtains door state signal in electric lock module 3 simultaneously, and passes through electricity
Source carrier modulation demodulator circuit 12 feeds back to gate inhibition's host module 1, the foundation as alarm or prompting of closing the door.
Embodiment of above be only the preferred embodiment of the present invention is described, not to the scope of the present invention into
Row limits, and on the premise of design spirit of the present invention is not departed from, this field ordinary skill technical staff is to the technical side of the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain that claims of the present invention determines.
Claims (8)
1. a kind of two-wire system access control system, including gate inhibition's host module, electric lock module, exit button module and power supply mould
Block, it is characterised in that：Gate inhibition's host module, electric lock module, exit button module and power module include two bars
Connecting line is connected with each other by two bars connecting lines with parallel way between modules, and wherein modules pass through two
The circuit that signal connecting line is formed is two-wire system system line；
Wherein described gate inhibition's host module, electric lock module are equipped with polarity transformation circuits, Power Carrier tune in exit button module
Demodulator circuit and MCU processed；Wherein gate inhibition's host module, electric lock module, the Power Carrier modulation /demodulation in exit button module
Circuit carries out bi-directional digital communication with the MCU of respective modules and connects, one end and the Power Carrier tune of the polarity transformation circuits
Demodulator circuit processed is electrically connected, and the other end is connected by two bars connecting lines with two-wire system system line；Wherein described gate inhibition
MCU in host module is also associated with input validation unit, and the exit button mould MCU in the block is also associated with exit button list
Member, the electric lock mould MCU in the block are also associated with switch unit；It is asked when exit button unit or input validation unit send unlocking
Seek signal, the MCU in gate inhibition's host module sends unlocking signal to electric lock mould MCU in the block, and the electric lock mould is in the block
MCU controls and the unlocking of driving switch unit.
2. a kind of two-wire system access control system according to claim 1, it is characterised in that：Gate inhibition's host module,
Indicator light, the MCU electric connections of the indicator light and respective modules are equipped in electric lock module, exit button module.
3. a kind of two-wire system access control system according to claim 1, it is characterised in that：Switch unit in electric lock module
Including current driving circuit, electromagnetic coil, door status switch, the door status switch is electrically connected with electric lock mould MCU in the block, described
Current driving circuit is connected with electric lock mould MCU in the block, and one end of the other end and electromagnetic coil is electrically connected, the electromagnetic coil
The other end be connected between polarity transformation circuits, Power Carrier modulation-demodulation circuit.
4. a kind of two-wire system access control system according to claim 1, it is characterised in that：The input validation unit bag
Include numeric keypad, EM card reading circuits, HID card reading circuits, IC card reading circuits, the numeric keypad, EM card reading circuits, HID Card Readers
Circuit, IC card reading circuits are electrically connected with the MCU in gate inhibition's host module.
5. a kind of two-wire system access control system according to claim 1, it is characterised in that：In gate inhibition's host module
MCU be also associated with buzzer, memory, dismantling-proof alarming device, bluetooth/WiFi connection circuits.
6. a kind of two-wire system access control system according to claim 1, it is characterised in that：Gate inhibition's host module,
Low-pass filter circuit and voltage-stabilizing output circuit are both provided in electric lock module, exit button module；Wherein described low-pass filtering
Circuit includes the first inductance (L1), first resistor (R1), the 3rd capacitance (C3), the 4th capacitance (C4)；The regulator circuit output
Circuit includes the first control chip (U1), the 5th capacitance (C5), the 6th capacitance (C6)；The polarity transformation circuits include the one or two
Pole pipe (D1), the second diode (D2), the 3rd diode (D3), the 4th diode (D4)；The Power Carrier modulation /demodulation electricity
Road includes second resistance (R2), 3rd resistor (R3), the first triode (Q1), the 5th diode (D5), the first capacitance (C1), the
Four resistance (R4), the second capacitance (C2), the 5th resistance (R5), the 6th resistance (R6), the second triode (Q2), the 7th resistance
(R7)；
The plus earth of wherein the first diode (D1) and the 3rd diode (D3), the cathode of first diode (D1) with
The anode connection of second diode (D2), the cathode of the 3rd diode (D3) are connected with the anode of the 4th diode (D4),
The cathode of second diode (D2) is connected with the cathode of the 4th diode (D4), one end point of the two bars connecting line
Cathode not with the first diode (D1) and the 3rd diode (D3) is connected；The cathode of second diode (D2) passes through the first electricity
Sense (L1) is connected with one end of the 3rd capacitance (C3), the other end ground connection of the 3rd capacitance (C3)；The cathode of 4th diode (D4)
It is connected by first resistor (R1) with one end of the 3rd capacitance (C3), the other end ground connection of the 3rd capacitance (C3)；Second diode
(D2) cathode is connected by the first inductance (L1) with one end of the 4th capacitance (C4), the other end ground connection of the 4th capacitance (C4)；
The IN pins of wherein described first control chip (U1) are connected with one end of the 4th capacitance (C4), the first control chip (U1)
GND pin ground connection, it is described first control chip (U1) OUT pins be grounded by the 5th capacitance (C5), it is described first control
The OUT pins of chip U1 are grounded by the 6th capacitance (C6)；
The cathode of wherein described 4th diode (D4) is connected by 3rd resistor (R3) with the collector of the first triode (Q1),
The base stage of first triode (Q1) is connected with one end of second resistance (R2), the other end output control of second resistance (R2)
Signal；
The anode of wherein described 5th diode (D5) is connected with the cathode of the 4th diode (D4), and the 5th diode (D5) is born
Pole is connected by the first capacitance (C1) with the emitter of the first triode (Q1), and the cathode of the 5th diode (D5) passes through
Four resistance (R4) are connected with the emitter of the first triode (Q1)；One end of wherein described second capacitance (C2) and the 5th diode
(D5) cathode connection, the other end are connected with one end of the 5th resistance (R5), the other end and second of the 5th resistance (R5)
The base stage connection of triode (Q2), the emitter of first triode (Q1) pass through the 6th resistance (R6) and the second triode
(Q2) base stage connection, the emitter of first triode (Q1) and the emitter ground connection of the second triode (Q2) are described
One end of 7th resistance (R7) is connected with the OUT pins of the first control chip U1, the other end and the two or three of the 7th resistance (R7)
The collector connection of pole pipe (Q2), and the collector of second triode (Q2) receives control signal.
7. a kind of two-wire system access control system according to claim 6, it is characterised in that：The power module includes straight
The first inductance (L1) and first resistor (R1) in galvanic electricity source, low-pass filter circuit, wherein low-pass filter circuit is parallel with one another, institute
The anode for stating DC power supply is connected by the first inductance (L1) with a wherein bars connecting line, and the cathode of the DC power supply connects
Ground, another bars connecting line ground connection.
8. a kind of two-wire system access control system according to claim 7, it is characterised in that：The DC power supply is 12V
DC power supply.
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| CN201810057959.7A CN108091026B (en) | 2018-01-18 | 2018-01-18 | Two-wire access control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810057959.7A CN108091026B (en) | 2018-01-18 | 2018-01-18 | Two-wire access control system |
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| CN108091026B CN108091026B (en) | 2023-12-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114584177A (en) * | 2021-12-31 | 2022-06-03 | 深圳达实物联网技术有限公司 | Access control system based on direct current carrier communication |
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|---|---|
| CN108091026B (en) | 2023-12-26 |
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