CN112130500A - Low-power consumption bluetooth lock button awakening circuit - Google Patents
Low-power consumption bluetooth lock button awakening circuit Download PDFInfo
- Publication number
- CN112130500A CN112130500A CN202011017540.2A CN202011017540A CN112130500A CN 112130500 A CN112130500 A CN 112130500A CN 202011017540 A CN202011017540 A CN 202011017540A CN 112130500 A CN112130500 A CN 112130500A
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- China
- Prior art keywords
- power consumption
- bluetooth lock
- resistor
- bluetooth
- controller
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- 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.)
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- 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
- G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24215—Scada supervisory control and data acquisition
-
- 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
- G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
- G07C2009/00365—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks in combination with a wake-up circuit
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Automation & Control Theory (AREA)
- Lock And Its Accessories (AREA)
Abstract
The invention relates to a low-power consumption Bluetooth lock key awakening circuit which can realize the awakening of a Bluetooth lock only by matching a plurality of elements and can meet the requirement of PCB layout in a limited space of a small-size Bluetooth lock. And when the bluetooth lock is in the dormant state, the power of VCC power supply end of the bluetooth lock is cut off, and the controller and the bluetooth chip, etc. do not supply power, and the power consumption of the whole bluetooth lock is extremely low, and only has the power consumption caused by the leakage current of the MOS tube, and the power consumption is generally only a few nA, compared with the existing power consumption of mu A level, the power consumption of the bluetooth lock is greatly reduced.
Description
Technical Field
The invention relates to the technical field of Bluetooth lock awakening, in particular to a low-power-consumption Bluetooth lock key awakening circuit.
Background
The bluetooth lock is an intelligent lock, and the user can realize unblanking through the bluetooth, and it is more convenient to use, so wide attention to. In order to save energy and reduce the power consumption of the bluetooth lock, the current operation is that when not unlocking, the bluetooth lock end is in a deep sleep mode, and whether the key is pressed down is detected in real time by a detection circuit, and when the key is pressed down, the bluetooth lock is awakened. Although the bluetooth lock end does not work during the deep sleep period, the system still supplies power to the bluetooth chip and the like, and the power consumption of the system is generally about 2 muA. For a small-sized bluetooth lock, the requirement of low power consumption cannot be achieved due to the fact that a large-capacity battery cannot be placed in the small-sized bluetooth lock, and the power consumption of 2 muA cannot be achieved.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a low-power-consumption Bluetooth lock key wake-up circuit which is simple in circuit and low in power consumption.
In order to achieve the purpose, the invention adopts the technical scheme that:
a low-power consumption Bluetooth lock key wake-up circuit comprises keys, a key detection unit and a switch control unit; the switch control unit comprises a controller, and the key detection unit comprises a resistor R1, a MOS tube Q1 and a diode D1;
one end of the resistor R1 is connected with a battery power supply VBAT, and the other end of the resistor R1 is connected with the PWR _ EN end of the controller; the grid electrode of the MOS tube Q1 is connected with the PWR _ EN end of the controller, the source electrode is connected with a battery power supply VBAT, and the drain electrode is connected with the power supply end of the VCC end of the Bluetooth lock; the anode of the diode D1 is connected to the gate of the MOS transistor, and the cathode is grounded via the button.
The key detection unit further comprises a resistor R2, one end of the resistor R2 is connected with the VCC power supply end, the other end of the resistor R2 is connected with the WAKE end of the controller on one hand, and the other end of the resistor R2 is grounded through the key on the other hand.
By adopting the scheme, the key awakening circuit is simple in design, the awakening of the Bluetooth lock can be realized only by matching of a plurality of elements, and the PCB layout in the limited space of the small-size Bluetooth lock can be met. And when the bluetooth lock is in the dormant state, the power of VCC power supply end of the bluetooth lock is cut off, and the controller and the bluetooth chip, etc. do not supply power, and the power consumption of the whole bluetooth lock is extremely low, and only has the power consumption caused by the leakage current of the MOS tube, and the power consumption is generally only a few nA, compared with the existing power consumption of mu A level, the power consumption of the bluetooth lock is greatly reduced.
Drawings
FIG. 1 is a functional block diagram of the present invention;
fig. 2 is a schematic circuit diagram of the switch control and key detection of the present invention.
Description of reference numerals:
a key wake-up circuit 10; a switch control unit 11; a controller 111; a key detection unit 12; a Bluetooth chip 20; the motor 30 is driven.
Detailed Description
As shown in fig. 1 and fig. 2, the invention discloses a bluetooth low energy lock key wake-up circuit 10, which includes a key, a key detection unit 12 and a switch control unit 11, wherein the switch control unit 11 includes a controller 111, and the key detection unit 12 includes a resistor R1, a resistor R2, a MOS transistor Q1 and a diode D1; one end of the resistor R1 is connected to the battery power supply VBAT, and the other end is connected to the PWR _ EN end of the controller 111; the gate of the MOS transistor Q1 is connected with the PWR _ EN end of the controller 111, the source is connected with the battery power supply VBAT, and the drain is connected with the power supply end of the VCC end of the Bluetooth lock; the anode of the diode D1 is connected with the grid of the MOS tube, and the cathode is grounded through the key; one end of the resistor R2 is connected with the VCC power supply end of the Bluetooth lock, and the other end is connected with the WAKE end of the controller 111 on the one hand and is grounded through the key on the other hand. The VCC terminal of the bluetooth lock is used to supply power to the controller 111, the bluetooth chip 20, the driving motor 30, and the like of the bluetooth lock.
The working principle of the invention is as follows:
when the bluetooth lock normally works, the PWR _ EN end of the controller 111 is at a low level, the MOS transistor Q1 is turned on, VCC is continuously powered at this time, the key detection pin WAKE of the controller 111 is at a high level in a normal state, and the key SW1 is at a low level when pressed; the bluetooth chip 20 and the driving motor 30 of bluetooth lock normally supply power, and the user can be through interacting with bluetooth chip 20 this moment, and control driving motor 30 unblanks or falls the lock.
After the unlocking or unlocking task is completed, the controller 111 will automatically enter the sleep state, and the PWR _ EN terminal of the controller 111 is in the high level or suspended high impedance state. At this time, the MOS transistor Q1 is turned off, the power supply of the VCC power supply terminal is cut off, the controller 111 has no power supply, and the PWR _ EN terminal stops outputting, but due to the existence of the resistor R1, the MOS transistor Q1 is still in a turned-off state, so that the system power consumption is extremely low, and only the power consumption is caused by the leakage current of the MOS transistor.
In a power-off state, if the key SW1 is pressed, the diode D1 is turned on, the gate of the MOS transistor Q1 is at a low level, the MOS transistor Q1 is also turned on, the VCC power supply terminal supplies power normally, at this time, the controller 111 starts to work, the PWR _ EN terminal is pulled down immediately, and enters a working state, the system supplies power normally after the key SW1 is released, the resistor R2 is used for realizing switch multiplexing, that is, after the switch is used for waking up the whole system, the WAKE terminal of the controller can judge whether the key is pressed through the high-low level state of the key, and further, control of other functions is realized.
In summary, the key wake-up circuit 10 of the present invention has a simple design, and only several components are matched to wake up the bluetooth lock, so as to satisfy the PCB layout in the limited space of the small-sized bluetooth lock. And when the bluetooth lock is in the dormant state, the power of VCC power supply end of the bluetooth lock is cut off, the controller 111 and the bluetooth chip 20, etc. do not supply power, the power consumption of the whole bluetooth lock is very low, and only the power consumption caused by the leakage current of the MOS tube is generally only several nA, and compared with the existing power consumption of the muA level, the power consumption of the bluetooth lock is greatly reduced.
The above description is only exemplary of the present invention and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above exemplary embodiments according to the technical spirit of the present invention are within the technical scope of the present invention.
Claims (2)
1. The utility model provides a bluetooth low energy lock button wake-up circuit which characterized in that: the device comprises a key, a key detection unit and a switch control unit; the switch control unit comprises a controller, and the key detection unit comprises a resistor R1, a MOS tube Q1 and a diode D1;
one end of the resistor R1 is connected with a battery power supply VBAT, and the other end of the resistor R1 is connected with the PWR _ EN end of the controller; the grid electrode of the MOS tube Q1 is connected with the PWR _ EN end of the controller, the source electrode is connected with a battery power supply VBAT, and the drain electrode is connected with the power supply end of the VCC end of the Bluetooth lock; the anode of the diode D1 is connected to the gate of the MOS transistor, and the cathode is grounded via the button.
2. The bluetooth low energy lock button wake-up circuit according to claim 1, characterized in that: the key detection unit further comprises a resistor R2, one end of the resistor R2 is connected with the VCC power supply end, the other end of the resistor R2 is connected with the WAKE end of the controller on one hand, and the other end of the resistor R2 is grounded through the key on the other hand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011017540.2A CN112130500A (en) | 2020-09-24 | 2020-09-24 | Low-power consumption bluetooth lock button awakening circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011017540.2A CN112130500A (en) | 2020-09-24 | 2020-09-24 | Low-power consumption bluetooth lock button awakening circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112130500A true CN112130500A (en) | 2020-12-25 |
Family
ID=73839751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011017540.2A Pending CN112130500A (en) | 2020-09-24 | 2020-09-24 | Low-power consumption bluetooth lock button awakening circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112130500A (en) |
-
2020
- 2020-09-24 CN CN202011017540.2A patent/CN112130500A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20210611 Address after: No. 15, Shishan North Road, Dongfu street, Haicang District, Xiamen City, Fujian Province, 361000 Applicant after: TBB POWER (XIAMEN) Co.,Ltd. Address before: Room 302, No.15, Shishan North Road, Dongfu street, Haicang District, Xiamen City, Fujian Province Applicant before: Xiamen Hanneng Energy Technology Co.,Ltd. |
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| TA01 | Transfer of patent application right |