CN104314379A - Unlocking control circuit for locking mechanism - Google Patents
Unlocking control circuit for locking mechanism Download PDFInfo
- Publication number
- CN104314379A CN104314379A CN201410426179.7A CN201410426179A CN104314379A CN 104314379 A CN104314379 A CN 104314379A CN 201410426179 A CN201410426179 A CN 201410426179A CN 104314379 A CN104314379 A CN 104314379A
- Authority
- CN
- China
- Prior art keywords
- circuit
- lock
- optocoupler
- pin
- control
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
The invention belongs to an unlocking control circuit and particularly discloses an unlocking control circuit for a locking mechanism. The output end of a DSP is communicated with the input end of a control circuit, and the output end of the control circuit is communicated with the control input end of a locking circuit. One output end of the locking circuit is communicated with one input end of a circuit to be unlocked, and the other output end of the locking circuit is communicated with the other input end of the circuit to be unlocked and input end of a detection circuit. The feedback output end of the detection circuit is communicated with the input end of the DSP. The DSP sends a control instruction to the control circuit, the control circuit reverses the control instruction and then transmits the control instruction to the locking circuit, the locking circuit carries out filtering and optocoupler isolation for the reversed control instruction and then transmits the control instruction to the circuit to be unlocked and the detection circuit, the detection circuit collects the state of the circuit to be unlocked and transmits to the DSP in real time, and the DSP determines the locking state of the circuit to be unlocked. The circuit can isolate load from a power supply so as to prevent an electromagnetic lock from being burnt, and can provide a stable supply voltage to the electromagnetic lock.
Description
Technical field
The invention belongs to a kind of solution lock control circuit, be specifically related to a kind of highly reliable retaining mechanism solution lock control circuit.
Background technology
Release circuit in the past has two kinds of modes usually: the first is source resistance dividing potential drop mode; The second is copped wave dividing potential drop mode.But all there is respective deficiency in these two kinds of modes.
Source resistance dividing potential drop mode is by cell voltage through electric resistance partial pressure, supplies electromagnetic lock afterwards and uses.Most of electric energy consumption dissipates by which, inefficiency, and heat-dissipating is serious.Simultaneously along with the decline of supply voltage, electromagnetic lock supply voltage also can decline thereupon, and reliability also decreases; And circuit does not exist isolation features, once release circuit load abnormal, there is certain possibility to cause supply voltage abnormal, produce not expected serious consequence.
Copped wave dividing potential drop mode uses control chip to send pwm signal, and this pwm signal controls metal-oxide-semiconductor copped wave, to reach the voltage that applicable electromagnetic lock is powered.But there is the not isolating problem of power supply and load equally in which; Control the chip of pwm signal for Systematical control simultaneously, can occupying system resources.Once pwm signal controls abnormal, the serious consequence that supply voltage is abnormal, metal-oxide-semiconductor burns or electromagnetic lock burns can be there is equally.
Summary of the invention
The object of the present invention is to provide a kind of retaining mechanism solution lock control circuit, this circuit lock-out state whole process is controlled, can by load and isolated from power, avoid because electromagnetic lock burns the consequence causing power supply circuits short circuit, stable supply voltage can be provided to electromagnetic lock, ensure the stable, reliable of electromagnetic lock work.
Realize the technical scheme of the object of the invention: a kind of retaining mechanism solution lock control circuit, this circuit comprises DSP circuit, control circuit, lock-in circuit and testing circuit, the output of DSP circuit is communicated with the input of control circuit, the output of control circuit is communicated with the control input end of lock-in circuit, an output of lock-in circuit with treat that an input of release circuit is communicated with, another output of lock-in circuit respectively with the input treating release circuit, the input of testing circuit is communicated with, the feedback output end of testing circuit is communicated with the input of DSP circuit, DSP circuit sends control instruction to control circuit, lock-in circuit is transferred to after control circuit is reverse by control instruction, lock-in circuit is transferred to after the control instruction after is oppositely carried out filtering, light-coupled isolation and treats release circuit and testing circuit, testing circuit Real-time Collection is treated the state of release circuit and will be treated that the state real-time Transmission of release circuit is to DSP circuit, DSP circuit determines the lock-out state treating release circuit, thus realizes the unblock treating release circuit.
Described control circuit is made up of the first pull down resistor, not gate, the first electric capacity, and the output pin CTRL of DSP circuit is connected with one end of the first pull down resistor, the input pin IN of not gate respectively, the other end ground connection of the first pull down resistor; The ground pin GND ground connection of not gate, the power supply input pin OE of not gate connects+3.3V power supply, the power pin Vcc of not gate is connected with the output of+3.3V power supply, one end of the first electric capacity respectively, the other end ground connection of the first electric capacity, and the output pin OUT of not gate is connected with the input of lock-in circuit; The control signal that non-goalkeeper DSP circuit exports is reverse, and meanwhile, not gate increases the output current of this control signal, and the control signal after oppositely increasing is transferred to lock-in circuit.
Described lock-in circuit is made up of the first former margin leakage resistance, the first optocoupler, power module, the 3rd electric capacity, the 4th electric capacity, treats that release circuit is electromagnetic lock; One end of first former margin leakage resistance is connected with the output pin OUT of the not gate of control circuit, one end of the second electric capacity respectively, the other end ground connection of the second electric capacity; The other end of the first former margin leakage resistance is connected with the positive input pin IN+ of the first optocoupler, the ground pin IN-ground connection of the first optocoupler; The forbidding of the positive output pin OUT+ of the first optocoupler and power module holds Forbid to be connected, and the negative output pin OUT-of the first optocoupler is connected with the negative voltage input pin Vin-of power module; The positive voltage input pin Vin+ of power module be connected with the output of+28V power supply, one end of the 3rd electric capacity respectively; The positive voltage output pin Vo+ of power module respectively with one end of the 4th electric capacity, treat the positive input pin IN+ of the electromagnetic lock of release circuit, the positive input terminal of testing circuit is connected, the negative voltage output pin Vo-of power module respectively with the negative input end of the other end of the 4th electric capacity, the negative input pin IN-treating the electromagnetic lock of release circuit, testing circuit-be connected; First former margin leakage resistance and the 3rd electric capacity carry out filtering to the reverse increase control signal that the not gate of control circuit transmits, and the first optocoupler oppositely will increase control signal isolation; First optocoupler is by the signal control power supply module work after isolation.
Described testing circuit is made up of the second former margin leakage resistance, pull-up resistor, the second optocoupler, one end of second former margin leakage resistance is connected with the positive voltage output pin Vo+ of power module, and the other end of the second former margin leakage resistance is connected with the positive input pin IN+ of the second optocoupler; The negative input pin IN-of the second optocoupler is connected with the negative voltage output pin Vo-of power module; The positive output pin OUT+ of the second optocoupler is connected with one end of pull-up resistor, the detection pin TEST of DSP circuit respectively; The other end of pull-up resistor is connected with the input of+3.3V power supply, the negative output pin OUT+ ground connection of the second optocoupler; The voltage signal that the power module of lock-in circuit exports is transferred to electromagnetic lock after the 4th capacitor filtering, the current signal of electromagnetic lock is by the second former margin leakage resistance current limliting, current signal transfer after current limliting isolates to the second optocoupler, cut-off current signal after isolation is after pull-up resistor pull-up, real-time Transmission is to the detection pin TSET of DSP circuit, the power supply state of DSP electric circuit inspection electromagnetic lock, thus determine the lock-out state of electromagnetic lock.
Advantageous Effects of the present invention is: (1) control circuit of the present invention can meet mechanical actuator under not electrifying condition, keeps certain locking torque; And can be constant in powered on moment Guarantee Status; After powering on, the opportunity can be unlocked by software control, latched.(2) power up is in stable condition: pull-up resistor can ensure DSP power on build and press through in journey, suppress the labile state of the I/O pin of DSP, ensure that locking mechanism state is constant.(3) lock-out state whole process is controlled: after power supply electrifying, by locking and the released state of software control locking mechanism.(4) possess isolation features, the second optocoupler, the 4th optocoupler and the 3rd power module can realize effectively isolating the leak control and check of retaining mechanism and retaining mechanism; When electromagnetic lock fault occurs, can, by load and isolated from power, avoid causing more serious consequence.(5) possess voltage stabilizing function: when supply voltage fluctuates in 40V to 16V scope, stable electromagnetic lock supply voltage all can be provided, ensure the stable, reliable of electromagnetic lock work.(6) control circuit of the present invention possesses measuring ability simultaneously, and output voltage state determines reference voltage detection jointly by the 4th optocoupler, front end current-limiting resistance and pull-up resistor; Can detect and whether complete electromagnetic lock and power, add the testability of circuit.(7) antijamming capability: the second electric capacity can suppress the interference to control end under complex electromagnetic environment, ensures that control signal is stable, true, reliable.
Accompanying drawing explanation
Fig. 1 is the system block diagram of a kind of retaining mechanism solution lock control circuit provided by the present invention;
Fig. 2 is the schematic diagram of a kind of retaining mechanism solution lock control circuit provided by the present invention;
Fig. 3 is the schematic diagram of DSP provided by the present invention;
Fig. 4 is the schematic diagram of control circuit provided by the present invention;
Fig. 5 is the schematic diagram of lock-in circuit provided by the present invention;
Fig. 6 is the schematic diagram of testing circuit provided by the present invention.
In figure: 1.DSP circuit, 2. control circuit, 3. lock-in circuit, 4. testing circuit.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is described in further detail.
As shown in Figure 1, the output of DSP circuit 1 is communicated with the input of control circuit 2, the output of control circuit 2 is communicated with the control input end of lock-in circuit 3, an output of lock-in circuit 3 with treat that an input of release circuit 5 is communicated with, an input of testing circuit 4 is communicated with, another output of lock-in circuit 3 respectively with treat an input of release circuit 5, another input of testing circuit 4 is communicated with, the feedback output end of testing circuit 4 is communicated with the input of DSP circuit 1.DSP circuit 1 sends control instruction to control circuit 2, low level locks, high level unlocks, lock-in circuit 3 is transferred to after control circuit 2 is reverse by control instruction, lock-in circuit 3 is transferred to after the control instruction after is oppositely carried out filtering, light-coupled isolation and treats release circuit 5 and testing circuit 4, testing circuit 4 Real-time Collection is treated the state of release circuit 5 and will be treated that the state real-time Transmission of release circuit 5 is to DSP circuit 1, DSP circuit 1 determines the lock-out state treating release circuit 5, thus realizes the unblock treating release circuit 5.
As shown in accompanying drawing 2 and Fig. 4, control circuit 2 is made up of the first pull down resistor R1, not gate U1, the first electric capacity C1.As shown in Figure 2, Figure 3 and Figure 4, the ground pin GND ground connection of DSP circuit 1, the power supply input pin Vcc of DSP circuit 1 connects+3.3V power supply.The output pin CTRL of DSP circuit 1 is connected with one end of the first pull down resistor R1, the input pin IN of not gate U1 respectively, the other end ground connection of the first pull down resistor R1.The ground pin GND ground connection of not gate U1, the power supply input pin OE of not gate U1 connects+3.3V power supply, the power pin Vcc of not gate U1 is connected with the output of+3.3V power supply, one end of the first electric capacity C1 respectively, the other end ground connection of the first electric capacity C1, the output pin OUT of not gate U1 is connected with the input of lock-in circuit 3.The first current-limiting resistance R1 in control circuit 2 plays drop-down effect, and when being powered on by DSP, the clamping of uncontrollable state is to logical zero.The effect of not gate U1 is that the logic state of signal is reverse, improves output current simultaneously.First electric capacity C1 plays filter action, suppresses power supply noise to cause the misoperation of not gate U1 logic.
As shown in accompanying drawing 2 and Fig. 5, lock-in circuit 3 is made up of the first former margin leakage resistance R2, the first optocoupler U2, power module U3, the 3rd electric capacity C3, the 4th electric capacity C4.Treat that release circuit 5 is for electromagnetic lock U5.As shown in accompanying drawing 2, Fig. 4 and Fig. 5, one end of the first former margin leakage resistance R2 is connected with the output pin OUT of the not gate U1 of control circuit 2, one end of the second electric capacity C2 respectively, the other end ground connection of the second electric capacity C2.The other end of the first former margin leakage resistance R2 is connected with the positive input pin IN+ of the first optocoupler U2, the ground pin IN-ground connection of the first optocoupler U2.The forbidding of the positive output pin OUT+ of the first optocoupler U2 and power module U3 holds Forbid to be connected, and the negative output pin OUT-of the first optocoupler U2 is connected with the negative voltage input pin Vin-of power module U3.The positive voltage input pin Vin+ of power module U3 be connected with the output of+28V power supply, one end of the 3rd electric capacity C3 respectively, the other end of the 3rd electric capacity C3 and the ground of+28V power supply, 28GND holds connection.The positive voltage output pin Vo+ of power module U3 respectively with one end of the 4th electric capacity C4, treat the positive input pin of the electromagnetic lock U5 of release circuit 5, the positive input terminal of IN+ testing circuit 4 is connected, the negative voltage output pin Vo-of power module U3 respectively with the negative input end of the other end of the 4th electric capacity C4, the negative input pin IN-treating the electromagnetic lock U5 of release circuit 5, testing circuit 4-be connected.The output noise of the second electric capacity C2 effect filtering not gate U1 in lock-in circuit 3, improves the antijamming capability of holding wire.First current-limiting resistance R2 is the former margin leakage resistance of the first optocoupler U2, determines the former limit operating current of the first optocoupler U2.3rd electric capacity C3 is the prime filter capacitor of power module U3, plays the effect of stabilized power source module U3 power supply.4th electric capacity C4 is that filtering is carried out in the power supply of electromagnetic lock U5.
As shown in accompanying drawing 2 and Fig. 6, testing circuit 4 is made up of the second former margin leakage resistance R3, pull-up resistor R4, the second optocoupler U4.As shown in accompanying drawing 2, Fig. 5 and Fig. 6, one end of the second former margin leakage resistance R3 is connected with the positive voltage output pin Vo+ of power module U3, and the other end of the second former margin leakage resistance R3 is connected with the positive input pin IN+ of the second optocoupler U4.The negative input pin IN-of the second optocoupler U4 is connected with the negative voltage output pin Vo-of power module U3.The positive output pin OUT+ of the second optocoupler U4 is connected with one end of pull-up resistor R4, the detection pin TEST of DSP circuit 1 respectively; The other end of pull-up resistor R4 is connected with the input of+3.3V power supply, the negative output pin OUT+ ground connection of the second optocoupler U4.The second current-limiting resistance R3 in testing circuit 4 is the former margin leakage resistance of the second optocoupler U4, determines the former limit operating current of the second optocoupler U4.Pull-up resistor R4 provides the second optocoupler U4 secondary pull-up, the output state of clear and definite second optocoupler U4.When 3,4 pins of the second optocoupler U4 are in off state, the 3 pin level states of the second optocoupler U4 are pulled to 3.3V through pull-up resistor R4, are high level; When 3,4 pins of the second optocoupler U4 are in conducting state, the 3 pin level of the second optocoupler U4, through 4 pin ground connection, are low level.。
A kind of retaining mechanism solution lock control circuit provided by the invention, this circuit be based on Digital Logic realize the control to peripheral hardware, feedback, signals all in circuit is logic level, i.e. " 0 ", " 1 " signal, and its operating principle is as follows:
As shown in Figure 1, Figure 2 and Figure 4, the output pin CTRL of DSP circuit 1 is through pull down resistor R1, and initialize IO state common guarantee in power supply electrifying process by pull down resistor R1, not gate U1 and DSP circuit 1, the pin status of DSP circuit 1 remains unchanged.In DSP circuit 1 pin initialization procedure, output CTRL pin is initialized as low level; In power up, due to not gate U1, now pin status is uncertain, is pulled down to ground, makes not gate U1 state be low by pull down resistor R1.
As shown in Figure 1, Figure 2 with shown in Fig. 5, the control signal that the output pin CTRL of DSP circuit 1 inputs by not gate U1 is reverse; Not gate U1 increases the output current of this control signal simultaneously, enables this control signal drive the first optocoupler U2 of next stage.First optocoupler U2 controls the first optocoupler U2 former limit signal by the first current-limiting resistance R2, makes the first optocoupler U2 reach best operating point.The logical signal of the output of the first optocoupler U2 controls power module U3, and the first optocoupler U2 also plays the effect of isolation simultaneously.Power module U3 plays regulated output voltage, isolation and the effect of three, control out-put supply switch.Can be there is certain fluctuation in outside+28V power supply, because the voltage input pin Vin+ on the former limit of power module U3 connects outside+28V power supply, the introducing of power module U3 can the supply voltage of stable electrical magnetic padlock U5.Power module U3 possesses isolation features simultaneously, after electromagnetic lock U5 plays inefficacy, can not have influence on+28V the circuit on the former limit of power module U3.Power module U3 also has and forbids holding Forbid, by controlling the conducting state of forbidding holding Forbid and+28V power supply, can make to reach and controls electromagnetic lock U5 locking and the state unlocked.
As shown in Figure 1, Figure 2 with shown in Fig. 6, by adjusting the resistance of the second current-limiting resistance R3, determine the former limit operating current of the second optocoupler U4, by optocoupler parameter, calculate the resistance of pull-up resistor R4, determine the threshold value of the second optocoupler U4 secondary level saltus step, the threshold value of the second optocoupler U4 secondary level saltus step is set as the output voltage a little less than power module U3.The switching signal that first optocoupler U2 exports controls power module U3; When the first optocoupler U2 output OUT+ and OUT-disconnects, power module U3 exports 24V voltage, and now, 24V voltage is through the second current-limiting resistance R3 of optocoupler U4 prime, and the electric current reaching former limit IN+ and IN-of optocoupler U4 is just recommended current; The now output OUT+ of the second optocoupler U4 and OUT-UNICOM, positive voltage output pin OUT+ is logical zero.When the first optocoupler U2 output OUT+ and OUT-UNICOM, power module U3 exports 0V voltage, now, does not have electric current to flow through optocoupler U4, therefore output OUT+ and the OUT-of the second optocoupler U4 disconnects, the level of positive voltage output pin OUT+ is pulled to logical one through pull-up resistor R4.
From whole circuit, there is following logical relation in the state of control logic, lock and the logic state of detection voltage: when logic control is low level, be lock-out state, detecting voltage logic shape is high level; When logic control is high level, be released state, detecting voltage logic shape is low level.Therefore just can be detected the power supply state of electromagnetic lock U5 by the detection pin TSET of DSP circuit 1, thus determine the lock-out state of electromagnetic lock U5.
In conjunction with the accompanying drawings and embodiments the present invention is explained in detail above, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art possess, various change can also be made under the prerequisite not departing from present inventive concept.The content be not described in detail in the present invention all can adopt prior art.
Claims (4)
1. a retaining mechanism solution lock control circuit, it is characterized in that: this circuit comprises DSP circuit (1), control circuit (2), lock-in circuit (3) and testing circuit (4), the output of DSP circuit (1) is communicated with the input of control circuit (2), the output of control circuit (2) is communicated with the control input end of lock-in circuit (3), an output of lock-in circuit (3) with treat that an input of release circuit (5) is communicated with, another output of lock-in circuit (3) respectively with the input treating release circuit (5), the input of testing circuit (4) is communicated with, the feedback output end of testing circuit (4) is communicated with the input of DSP circuit (1), DSP circuit (1) sends control instruction to control circuit (2), lock-in circuit (3) is transferred to after control circuit (2) is reverse by control instruction, control instruction after is oppositely carried out filtering by lock-in circuit (3), be transferred to after light-coupled isolation and treat release circuit (5) and testing circuit (4), testing circuit (4) Real-time Collection treats the state of release circuit (5), and will treat that the state real-time Transmission of release circuit (5) is to DSP circuit (1), DSP circuit (1) determines the lock-out state treating release circuit (5), thus realize the unblock treating release circuit (5).
2. a kind of retaining mechanism solution lock control circuit according to claim 1, it is characterized in that: described control circuit (2) is made up of the first pull down resistor (R1), not gate (U1), the first electric capacity (C1), the output pin CTRL of DSP circuit (1) is connected with one end of the first pull down resistor (R1), the input pin IN of not gate (U1) respectively, the other end ground connection of the first pull down resistor (R1); The ground pin GND ground connection of not gate (U1), the power supply input pin OE of not gate (U1) connects+3.3V power supply, the power pin Vcc of not gate (U1) is connected with the output of+3.3V power supply, one end of the first electric capacity (C1) respectively, the other end ground connection of the first electric capacity (C1), the output pin OUT of not gate (U1) is connected with the input of lock-in circuit (3); The control signal that DSP circuit (1) exports by not gate (U1) is reverse, and meanwhile, not gate (U1) increases the output current of this control signal, and the control signal after oppositely increasing is transferred to lock-in circuit (3).
3. a kind of retaining mechanism solution lock control circuit according to claim 2, it is characterized in that: described lock-in circuit (3) is made up of the first former margin leakage resistance (R2), the first optocoupler (U2), power module (U3), the 3rd electric capacity (C3), the 4th electric capacity (C4), treat that release circuit (5) is for electromagnetic lock (U5); One end of first former margin leakage resistance (R2) is connected with the output pin OUT of the not gate (U1) of control circuit (2), one end of the second electric capacity (C2) respectively, the other end ground connection of the second electric capacity (C2); The other end of the first former margin leakage resistance (R2) is connected with the positive input pin IN+ of the first optocoupler (U2), the ground pin IN-ground connection of the first optocoupler (U2); The forbidding of the positive output pin OUT+ of the first optocoupler (U2) and power module (U3) holds Forbid to be connected, and the negative output pin OUT-of the first optocoupler (U2) is connected with the negative voltage input pin Vin-of power module (U3); The positive voltage input pin Vin+ of power module (U3) be connected with the output of+28V power supply, one end of the 3rd electric capacity (C3) respectively; The positive voltage output pin Vo+ of power module (U3) respectively with one end of the 4th electric capacity (C4), treat the positive input pin IN+ of the electromagnetic lock (U5) of release circuit (5), the positive input terminal of testing circuit (4) is connected, the negative voltage output pin Vo-of power module (U3) respectively with the negative input end of the other end of the 4th electric capacity (C4), the negative input pin IN-treating the electromagnetic lock (U5) of release circuit (5), testing circuit (4)-be connected; The reverse increase control signal that first former margin leakage resistance (R2) and the not gate (U1) of the 3rd electric capacity (C3) to control circuit (2) transmit carries out filtering, and the first optocoupler (U2) oppositely will increase control signal isolation; First optocoupler (U2) is by signal control power supply module (U3) work after isolation.
4. according to a kind of retaining mechanism solution lock control circuit that claim 3 is stated, it is characterized in that: described testing circuit (4) is made up of the second former margin leakage resistance (R3), pull-up resistor (R4), the second optocoupler (U4), one end of second former margin leakage resistance (R3) is connected with the positive voltage output pin Vo+ of power module (U3), and the other end of the second former margin leakage resistance (R3) is connected with the positive input pin IN+ of the second optocoupler (U4), the negative input pin IN-of the second optocoupler (U4) is connected with the negative voltage output pin Vo-of power module (U3), the positive output pin OUT+ of the second optocoupler (U4) is connected with one end of pull-up resistor (R4), the detection pin TEST of DSP circuit (1) respectively, the other end of pull-up resistor (R4) is connected with the input of+3.3V power supply, the negative output pin OUT+ ground connection of the second optocoupler (U4), the voltage signal that the power module (U3) of lock-in circuit (3) exports is transferred to electromagnetic lock (U5) after the 4th electric capacity (C4) filtering, the current signal of electromagnetic lock (U5) is by the second former margin leakage resistance (R3) current limliting, current signal transfer after current limliting isolates to the second optocoupler (U4), cut-off current signal after isolation is after pull-up resistor (R4) pull-up, real-time Transmission is to the detection pin TSET of DSP circuit (1), DSP circuit (1) detects the power supply state of electromagnetic lock (U5), thus determine the lock-out state of electromagnetic lock (U5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410426179.7A CN104314379B (en) | 2014-08-26 | 2014-08-26 | Unlocking control circuit for locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410426179.7A CN104314379B (en) | 2014-08-26 | 2014-08-26 | Unlocking control circuit for locking mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104314379A true CN104314379A (en) | 2015-01-28 |
| CN104314379B CN104314379B (en) | 2017-02-01 |
Family
ID=52369677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410426179.7A Active CN104314379B (en) | 2014-08-26 | 2014-08-26 | Unlocking control circuit for locking mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104314379B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109215253A (en) * | 2018-10-26 | 2019-01-15 | 苏州浪潮智能软件有限公司 | A kind of method and control circuit applied to the control of self-service device door |
| CN109375008A (en) * | 2018-10-09 | 2019-02-22 | 北京精密机电控制设备研究所 | A kind of electromagnetic lock working state detecting method |
| CN110782573A (en) * | 2019-11-27 | 2020-02-11 | 北京云迹科技有限公司 | Access control method, device and equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01290883A (en) * | 1988-05-17 | 1989-11-22 | Yoshida Kogyo Kk <Ykk> | Lock device for car door |
| CN101105087A (en) * | 2007-07-17 | 2008-01-16 | 深圳市和而泰电子科技有限公司 | Door lock system with state feedback |
| CN101282094A (en) * | 2008-05-22 | 2008-10-08 | 上海交通大学 | Multi-frequency, broadband, two-way drive device for ultrasonic motor |
| CN101950265A (en) * | 2010-09-19 | 2011-01-19 | 南京南瑞继保电气有限公司 | Method for CPU board card program downloading and hardware online detection and plug-in connector |
| CN102710116A (en) * | 2012-05-22 | 2012-10-03 | 奇瑞汽车股份有限公司 | PWM (pulse-width modulation) interlocking drive circuit |
| CN103683266A (en) * | 2013-12-20 | 2014-03-26 | 青岛歌尔声学科技有限公司 | Rechargeable battery protection circuit |
-
2014
- 2014-08-26 CN CN201410426179.7A patent/CN104314379B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01290883A (en) * | 1988-05-17 | 1989-11-22 | Yoshida Kogyo Kk <Ykk> | Lock device for car door |
| CN101105087A (en) * | 2007-07-17 | 2008-01-16 | 深圳市和而泰电子科技有限公司 | Door lock system with state feedback |
| CN101282094A (en) * | 2008-05-22 | 2008-10-08 | 上海交通大学 | Multi-frequency, broadband, two-way drive device for ultrasonic motor |
| CN101950265A (en) * | 2010-09-19 | 2011-01-19 | 南京南瑞继保电气有限公司 | Method for CPU board card program downloading and hardware online detection and plug-in connector |
| CN102710116A (en) * | 2012-05-22 | 2012-10-03 | 奇瑞汽车股份有限公司 | PWM (pulse-width modulation) interlocking drive circuit |
| CN103683266A (en) * | 2013-12-20 | 2014-03-26 | 青岛歌尔声学科技有限公司 | Rechargeable battery protection circuit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375008A (en) * | 2018-10-09 | 2019-02-22 | 北京精密机电控制设备研究所 | A kind of electromagnetic lock working state detecting method |
| CN109215253A (en) * | 2018-10-26 | 2019-01-15 | 苏州浪潮智能软件有限公司 | A kind of method and control circuit applied to the control of self-service device door |
| CN110782573A (en) * | 2019-11-27 | 2020-02-11 | 北京云迹科技有限公司 | Access control method, device and equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104314379B (en) | 2017-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7782115B2 (en) | Voltage level shifter | |
| CN103051324B (en) | The method of interface circuit and the output driver for unlock interface circuit | |
| CN106300275A (en) | A kind of BUCK drive circuit, power supply chip and application thereof | |
| CN105934885B (en) | Load driving circuits | |
| CN104314379A (en) | Unlocking control circuit for locking mechanism | |
| CN105119240A (en) | Short-circuit protection circuit of primary-side feedback voltage sampling resistor | |
| CN104600963A (en) | Output voltage dual-mode detection circuit of switching power supply | |
| US6069515A (en) | High voltage input buffer circuit using low voltage transistors | |
| CN106656148B (en) | Bidirectional IO circuit for preventing current from flowing backwards | |
| CN110289848A (en) | Voltage level converting | |
| US20120049875A1 (en) | Schmitt trigger with test circuit and method for testing | |
| US9608428B2 (en) | Distinguishing between overload and open load in off conditions | |
| CN106464249A (en) | Driving device for semiconductor element | |
| CN106841823A (en) | A kind of open-loop voltage detecting system | |
| TWI787358B (en) | Charge and discharge control circuit and battery device having the same | |
| CN110958002A (en) | Solid state power switching device | |
| CN101212219A (en) | N-trap potential switching circuit | |
| US9608635B1 (en) | Digital input circuit and method for high voltage sensors | |
| CN100481665C (en) | Overvoltage protecting circuit and method | |
| CN206975151U (en) | Load open-circuit detection circuit | |
| CN205644429U (en) | Supply circuit of polydisc position hard disk | |
| CN111289882B (en) | Push-pull output PWM open circuit detection circuit and method and vehicle | |
| CN103578525B (en) | For the circuit that recharges to node of current limliting ground | |
| CN209267548U (en) | A kind of quick low-power consumption single ended interfaces | |
| CN110165879A (en) | A kind of magnetic torquer control circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |