CN208056853U - A kind of electronic password lock low battery stabilization latches device - Google Patents
A kind of electronic password lock low battery stabilization latches device Download PDFInfo
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- CN208056853U CN208056853U CN201820482936.6U CN201820482936U CN208056853U CN 208056853 U CN208056853 U CN 208056853U CN 201820482936 U CN201820482936 U CN 201820482936U CN 208056853 U CN208056853 U CN 208056853U
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- power supply
- circuit
- electronic password
- password lock
- diode
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Abstract
The utility model discloses a kind of electronic password lock low batteries to stablize the device that latches, and the method powers to coded lock by using backup power supply, and cuts off the power in time, and the safety of coded lock can be effectively ensured；Described device includes power detecting control panel and backup power supply, power detecting control panel includes voltage signal acquisition circuit parallel with one another, the current signal Acquisition Circuit, power supply output control circuit and the power charging circuit that are serially connected, pass through the anode connected into power supply, realize the detection, control, power-off compensation of operating voltage, it solves the problem of after electronic password lock is unlocked not being latched after because electricity is low or artificial power-off.
Description
Technical field
The utility model is related to electronic lock fields, and in particular to a kind of electronic password lock low battery stabilization latches device.
Background technology
Electronic password lock is low-power consumption working equipment, and has low battery prompting and alarm function, but is being actually used
Cheng Zhong leads to the prompting and alarm of electronic password lock since work on the spot ambient sound is noisy and staff's sense of responsibility is insufficient
Often be ignored, in low battery, be susceptible to unlocking after because not enough electricity can not be latched again, cause safety cabinet or
Other important storage devices open the door after can not automatic blocking, cause major safety risks.Also after electronic password lock is unlocked, such as
The lock body power supply of the artificial broken electronic password lock of fruit, electronic password lock will be unable to be latched, and it is hidden equally to can result in considerable safety
Suffer from.
Utility model content
The utility model is directed to the above-mentioned deficiency of the prior art, provides the anode by connecting into power supply, realizes work
The detection of voltage, control, power-off compensation solve after electronic password lock unlocks, because can not after electricity is low or artificial power-off
The electronic password lock low battery of the problem of locking stablizes the device that latches.
In order to solve the above technical problems, the utility model uses following technical proposal：
It provides a kind of electronic password lock low battery stabilization to latch device comprising power detecting control panel and standby electricity
Source, the power detecting control panel include that the power supply output control circuit being serially connected, current signal Acquisition Circuit and power supply fill
Circuit, and adopted with the voltage signal in parallel of power supply output control circuit, current signal Acquisition Circuit and power charging circuit
Collector, the backup power supply are set on voltage signal acquisition circuit；
Power charging circuit includes the diode D2 being serially connected and backup power supply C1, diode D2 and electronic password lock electricity
The input terminal of source circuit connects；The current signal Acquisition Circuit includes the mos pipes Q3 being serially connected and resistance R5, resistance R5's
Both ends are parallel with current signal detection amplifier U3, mos pipe Q3 and connect with the anode of backup power supply C1；The source output control electricity
Road includes that the poles G of the mos pipes Q4 being serially connected and diode D3, mos pipe Q4 are in series with mos pipes Q5 and timing chip MCU, mos
The poles s of pipe Q4 are connected with resistance R5, and the poles d of mos pipes Q4 are connect with the output end of electronic password lock power circuit；
Voltage signal acquisition circuit includes the diode D1 being serially connected, voltage checking chip U2, mos pipe Q2 and mos pipe
The poles s of Q1, mos pipe Q1 are in parallel with the cathode of diode D2, and the poles d of mos pipes Q1 are in parallel with the anode of diode D3；Diode D1
Anode concatenated with the output end of backup power supply C1.
In above-mentioned technical proposal, it is preferred that current signal detects the model MAX4173 of amplifier U3, voltage monitoring core
Piece C1 is LTC2943.
In above-mentioned technical proposal, it is preferred that backup power supply is super capacitor.
The main advantageous effect that above-mentioned electronic password lock low battery provided by the utility model stablizes the device that latches is：
The voltage value of power circuit is monitored in real time by voltage detecting circuit, passes through current signal Acquisition Circuit pair
The current value generated when operation in power circuit is monitored, and passes through power charging circuit and power supply output control circuit, control
The charging and power supply of backup power supply processed, electric current supply when ensureing that the output of power circuit is cut off to play.
By the way that backup power supply is designed as super capacitor, quick using its charge and discharge, reserve of electricity is higher, and can charge and discharge time
The characteristic of the remote unconventional battery of number, is effectively ensured the reliability that stable low battery stablizes the device that latches.
Description of the drawings
Fig. 1 is the module map that electronic password lock low battery stablizes the device that latches.
Fig. 2 is the circuit diagram of current signal Acquisition Circuit.
Fig. 3 is the circuit diagram of power charging circuit.
Fig. 4 is the circuit diagram of power supply output control circuit.
Fig. 5 is the circuit diagram of voltage detecting circuit.
Fig. 6 is the program flow diagram that electronic password lock low battery stablizes the device that latches.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, it stablizes the module map for the device that latches for electronic password lock low battery.
The utility model provides a kind of electronic password lock low battery stabilization for stablizing the method that latches using above-mentioned low battery
Latch device comprising power detecting control panel and backup power supply, the power detecting control panel include the power supply being serially connected
Output control circuit, current signal Acquisition Circuit and power charging circuit, and acquired with power supply output control circuit, current signal
The voltage signal acquisition circuit in parallel of circuit and power charging circuit, the backup power supply are set to voltage signal acquisition circuit
On；
As shown in figure 3, the power charging circuit includes the diode D2 being serially connected and backup power supply C1, diode D2
It is connect with the input terminal of electronic password lock power circuit；Vbat is the voltage value of power circuit input terminal.
As shown in Fig. 2, current signal Acquisition Circuit includes the mos pipes Q3 being serially connected and resistance R5, the both ends of resistance R5
Current signal detection amplifier U3, mos pipe Q3 is parallel with to connect with the anode of backup power supply C1.
When the voltage value in power circuit is more than voltage threshold, mos pipes Q3 cut-offs, current signal detects at amplifier U3
In stop working state, powered to electronic password lock by power circuit；When the voltage value of power circuit is less than voltage threshold,
The Q3 conductings of mos pipes, current signal detects amplifier U3 work, and whether the current signal in observation circuit is equal to preset value, with
Judge whether switch lock operation occur.
When mos pipes Q3 ends, power circuit charges to backup power supply C1；When mos pipes Q3 is connected, C1 pairs of backup power supply
Outer power supply.
As shown in figure 4, power supply output control circuit includes the G of the mos pipes Q4 being serially connected and diode D3, mos pipe Q4
Pole is in series with mos pipes Q5 and the poles s of timing chip MCU, mos pipe Q4 are connected with resistance R5, the poles d of mos pipes Q4 and electronic cipher
Lock the output end connection of power circuit.
When backup power supply C1 powers, Q4 and Q5 conductings, timing chip MCU starts to work, when timing chip MCU is reached
Between threshold value when, Q4 cut-off, cut off backup power supply, stop coded lock work, until operating personnel re-replace the electricity of power circuit
Pond.
As shown in figure 5, voltage signal acquisition circuit includes the diode D1 being serially connected, voltage checking chip U2, mos pipe
The poles s of Q2 and mos pipes Q1, mos pipe Q1 are in parallel with the cathode of diode D2, and the poles d of mos pipes Q1 and the anode of diode D3 are simultaneously
Connection；The anode of diode D1 is concatenated with the output end of backup power supply C1.
When power circuit voltage value is more than voltage threshold, voltage checking chip U2 exports high level, Q2, Q1 conducting, electricity
The input terminal Vbat and output end vo ut of source circuit are connected directly, and the power supply of electronic password lock is cell voltage；Work as power circuit
When voltage value is less than voltage threshold, voltage checking chip U2 exports low level, Q1, Q2 cut-off, from power supply output control circuit
Supplying power for outside.
The voltage value of power circuit is monitored in real time by voltage detecting circuit, passes through current signal Acquisition Circuit pair
The current value generated when operation in power circuit is monitored, and passes through power charging circuit and power supply output control circuit, control
The charging and power supply of backup power supply processed, electric current supply when ensureing that the output of power circuit is cut off to play.
Optionally, backup power supply C1 can be super capacitor, and quick using its charge and discharge, reserve of electricity is higher, and can charge and discharge
The reliability that stable low battery stablizes the device that latches is effectively ensured in the characteristic of the far unconventional battery of electric number.
Here is the method that above-mentioned electronic password lock low battery stablizes that the device that latches realizes the stable device that latches, such as Fig. 6 institutes
Show comprising following steps：
S1, the monitoring state for initializing monitoring device, initialize the state of time set, start monitoring device.
Further, monitoring device is in parallel with the power circuit of electronic password lock, the electricity of backup power supply and electronic password lock
Source circuit is connected.
Further, the monitoring to voltage, operating current signal and time set of monitoring device is the week of fixed frequency
Phase property monitors.
S2, monitoring device is accessed in the power circuit of electronic password lock, monitoring device monitors in power circuit in real time
Voltage change.
S3, monitoring device is accessed in the power circuit of electronic password lock, monitoring device monitors in power circuit in real time
Voltage change, at this time integrated circuit be in low-power consumption working condition.
S4, when the voltage value in power circuit be less than current threshold when, the output for circuit of cutting off the power is opened by backup power supply
Begin to power, time set carries out timing, powers by backup power supply, and time set carries out timing, prepares cut-out electronic cipher
Power supply is locked, and monitors the operating current of electronic password lock.
Further, when backup power supply is powered, time set is started to power；When backup power supply stops powering, cut
The disconnected power supply to time set.
S5, when the timing time of time set be less than time threshold the second timing node when, monitored by monitoring device
With the presence or absence of the current signal for the action unlocked or be latched；
S6, when the timing time of time set be less than time threshold first time node when, when monitoring device monitors
There are when unlocking or block action, timing time is initialized, at the end of monitoring device monitors unlocking or block action, timing
Device restarts timing；
S7, when the timing time of time set is more than first time threshold and is less than second time threshold, and monitoring device
When monitoring to have unlocking or block action, renewal time threshold value is two times of former second time threshold；
When the timing time of time set is more than first time threshold and is less than second time threshold, and timing time is equal to
When second time threshold after increase, cut-out backup power supply power supply；
Further, when the timing time of time set be more than first time threshold and be less than second time threshold, and supervise
Device monitoring is surveyed to there is unlocking or block action, when time threshold becomes two times of former second time threshold, from time threshold
Change, until new time threshold is reached to timing time, time set keeps time status, without reclocking.
S8, when monitoring device monitor the voltage value in power circuit again be more than voltage threshold, power on circuit, protect
Hold monitoring device and whole control circuit low-power consumption working condition.
Specific embodiment of the present utility model is described above, in order to facilitate understanding by those skilled in the art
The utility model, it should be apparent that the utility model is not limited to the range of specific implementation mode, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the utility model spirit and scope in,
These variations are it will be apparent that all utilize the innovation and creation of the utility model design in the row of protection.
Claims (3)
- The device 1. a kind of electronic password lock low battery stabilization latches, which is characterized in that including power detecting control panel and standby electricity Source, the power detecting control panel include that the power supply output control circuit being serially connected, current signal Acquisition Circuit and power supply fill Circuit, and adopted with the voltage signal in parallel of power supply output control circuit, current signal Acquisition Circuit and power charging circuit Collector, the backup power supply are set on voltage signal acquisition circuit；The power charging circuit includes the diode D2 being serially connected and backup power supply C1, diode D2 and electronic password lock electricity The input terminal of source circuit connects；The current signal Acquisition Circuit includes the mos pipes Q3 being serially connected and resistance R5, resistance R5's Both ends are parallel with current signal detection amplifier U3, mos pipe Q3 and connect with the anode of backup power supply C1；The source output control electricity Road includes that the poles G of the mos pipes Q4 being serially connected and diode D3, mos pipe Q4 are in series with mos pipes Q5 and timing chip MCU, mos The poles s of pipe Q4 are connected with resistance R5, and the poles d of mos pipes Q4 are connect with the output end of electronic password lock power circuit；The voltage signal acquisition circuit includes the diode D1 being serially connected, voltage checking chip U2, mos pipe Q2 and mos pipe The poles s of Q1, mos pipe Q1 are in parallel with the cathode of diode D2, and the poles d of mos pipes Q1 are in parallel with the anode of diode D3；Diode D1 Anode concatenated with the output end of backup power supply C1.
- The device 2. electronic password lock low battery stabilization according to claim 1 latches, which is characterized in that the current signal The model MAX4173 of amplifier U3 is detected, voltage monitoring chip C1 is LTC2943.
- The device 3. electronic password lock low battery stabilization according to claim 1 latches, which is characterized in that the backup power supply C1 is super capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820482936.6U CN208056853U (en) | 2018-04-04 | 2018-04-04 | A kind of electronic password lock low battery stabilization latches device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820482936.6U CN208056853U (en) | 2018-04-04 | 2018-04-04 | A kind of electronic password lock low battery stabilization latches device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208056853U true CN208056853U (en) | 2018-11-06 |
Family
ID=63986842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820482936.6U Active CN208056853U (en) | 2018-04-04 | 2018-04-04 | A kind of electronic password lock low battery stabilization latches device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208056853U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316777A (en) * | 2018-04-04 | 2018-07-24 | 四川长风致远科技有限公司 | A kind of method and apparatus that electronic password lock low battery stabilization latches |
| CN109412231A (en) * | 2018-11-07 | 2019-03-01 | 恒银金融科技股份有限公司 | Electronic password lock external complement power supply circuit |
-
2018
- 2018-04-04 CN CN201820482936.6U patent/CN208056853U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316777A (en) * | 2018-04-04 | 2018-07-24 | 四川长风致远科技有限公司 | A kind of method and apparatus that electronic password lock low battery stabilization latches |
| CN109412231A (en) * | 2018-11-07 | 2019-03-01 | 恒银金融科技股份有限公司 | Electronic password lock external complement power supply circuit |
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