CN210982686U - Battery electric quantity detection circuit and intelligent lock - Google Patents
Battery electric quantity detection circuit and intelligent lock Download PDFInfo
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- CN210982686U CN210982686U CN201921781207.1U CN201921781207U CN210982686U CN 210982686 U CN210982686 U CN 210982686U CN 201921781207 U CN201921781207 U CN 201921781207U CN 210982686 U CN210982686 U CN 210982686U
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Abstract
The utility model discloses a battery power detection circuitry, including bleeder circuit, ADC sampling circuit and controller. The battery remaining capacity detection circuit can detect the battery remaining capacity of the intelligent lock, send a battery replacement prompt when the battery remaining capacity is insufficient, and prompt a user to replace the battery of the intelligent lock, so that the problem that the intelligent lock cannot be normally used due to insufficient battery remaining capacity is avoided, the door opening of the user is influenced, and the experience effect of the user is further improved; moreover, the battery power detection circuit is simple in structure and low in cost. The utility model also discloses an intelligence lock has the same beneficial effect with above-mentioned battery power detection circuitry.
Description
Technical Field
The utility model relates to an intelligence lock technical field especially relates to a battery power detection circuitry and intelligent lock.
Background
With the development of science and technology, intelligent locks replace traditional mechanical locks and are gradually widely used. At present, the battery power supply is mostly adopted to the intelligence lock, but the electric quantity of battery can reduce along with the increase of intelligence lock live time gradually, and the user can't know the actual electric quantity condition of battery, if the battery is not in time changed when the electric quantity is not enough, then can lead to the intelligence lock because of the unable normal use of battery electric quantity not enough to lead to the user can't open the door, reduced user's experience effect.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery electric quantity detection circuit and intelligent lock, which avoid the problem that the intelligent lock can not be normally used due to insufficient battery residual electric quantity, and influence the opening of the door of a user, thereby improving the experience effect of the user; moreover, the battery power detection circuit is simple in structure and low in cost.
In order to solve the technical problem, the utility model provides a battery power detection circuitry is applied to intelligent lock, include:
the voltage division circuit is connected with two ends of a battery of the intelligent lock and used for dividing the voltage of the battery to obtain a divided voltage signal;
the ADC sampling circuit is connected with the voltage division circuit and is used for carrying out analog-to-digital conversion on the voltage signal to obtain a digital signal;
and the controller is respectively connected with the ADC sampling circuit and the prompting device and is used for obtaining the residual electric quantity of the battery according to the digital signal so as to control the prompting device to send out a battery replacement prompt when the residual electric quantity is lower than a certain value.
Preferably, the voltage dividing circuit includes a first resistor and a second resistor; wherein:
the first end of the first resistor is connected with the anode of the battery, the second end of the first resistor is respectively connected with the first end of the second resistor and the ADC sampling circuit, and the second end of the second resistor is connected with the cathode of the battery and the public end of the second resistor is grounded.
Preferably, the battery level detection circuit further includes:
and the voltage stabilizing circuit is respectively connected with the voltage dividing circuit and the ADC sampling circuit and is used for stabilizing the voltage of the voltage signal and inputting the voltage signal to the ADC sampling circuit.
Preferably, the voltage stabilizing circuit comprises a first capacitor; wherein:
the first end of the first capacitor is connected with the voltage division circuit and the ADC sampling circuit respectively, and the second end of the first capacitor is grounded.
Preferably, the battery level detection circuit further includes:
and the standby power supply circuit is connected with the anode of the battery and used for providing standby electric energy for the intelligent lock when the electric quantity of the battery is insufficient.
Preferably, the standby power supply circuit comprises a USB interface, a transient diode and an anti-reverse diode; wherein:
the power supply end of the USB interface is respectively connected with the cathode of the transient diode and the anode of the anti-reverse diode, the anode of the transient diode is grounded, and the cathode of the anti-reverse diode is connected with the anode of the battery.
Preferably, the battery level detection circuit further includes:
and the reset circuit is connected with the controller and used for generating a reset signal after receiving a reset trigger instruction so that the controller performs restart operation after receiving the reset signal.
Preferably, the reset circuit comprises a self-reset key, a third resistor and a second capacitor; wherein:
a first end of the third resistor is connected with a direct-current power supply, a second end of the third resistor is respectively connected with a first end of the self-reset key, a first end of the second capacitor and the controller, a second end of the self-reset key is connected with a second end of the second capacitor, and a common end of the self-reset key is grounded;
correspondingly, the reset circuit is specifically configured to generate a falling edge signal when the self-reset key is pressed, so that the controller performs a restart operation after detecting the falling edge signal.
Preferably, the dc power supply includes:
and the voltage reduction circuit is connected with two ends of the battery and used for reducing the voltage of the battery to the required voltage of the controller.
In order to solve the technical problem, the utility model also provides an intelligent lock, including any kind of above-mentioned battery power detection circuitry.
The utility model provides a battery power detection circuitry, including bleeder circuit, ADC sampling circuit and controller. The battery remaining capacity detection circuit can detect the battery remaining capacity of the intelligent lock, send a battery replacement prompt when the battery remaining capacity is insufficient, and prompt a user to replace the battery of the intelligent lock, so that the problem that the intelligent lock cannot be normally used due to insufficient battery remaining capacity is avoided, the door opening of the user is influenced, and the experience effect of the user is further improved; moreover, the battery power detection circuit is simple in structure and low in cost.
The utility model also provides an intelligence lock has the same beneficial effect with above-mentioned battery power detection circuitry.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required in the prior art and the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1(a) is a schematic structural diagram of a first battery level detection circuit provided by the present invention;
fig. 1(b) is a schematic structural diagram of a second battery level detection circuit provided by the present invention;
fig. 2 is a schematic structural diagram of a third battery power detection circuit provided by the present invention;
fig. 3 is a schematic structural diagram of a standby power supply circuit provided by the present invention;
fig. 4 is a schematic structural diagram of a reset circuit provided by the present invention.
Detailed Description
The core of the utility model is to provide a battery electric quantity detection circuit and an intelligent lock, which can avoid the problem that the intelligent lock can not be normally used due to insufficient battery residual electric quantity, thereby influencing the opening of the door of a user and further improving the experience effect of the user; moreover, the battery power detection circuit is simple in structure and low in cost.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1(a), fig. 1(a) is a schematic structural diagram of a first battery level detection circuit provided in the present invention.
This battery electric quantity detection circuitry is applied to intelligence lock, includes:
the voltage division circuit 1 is connected with two ends of a battery of the intelligent lock and is used for dividing the voltage of the battery to obtain a divided voltage signal;
the ADC sampling circuit 2 is connected with the voltage division circuit 1 and is used for carrying out analog-to-digital conversion on the voltage signal to obtain a digital signal;
and the controller 3 is respectively connected with the ADC sampling circuit 2 and the prompting device and is used for obtaining the residual electric quantity of the battery according to the digital signal so as to control the prompting device to send out a battery replacement prompt when the residual electric quantity is lower than a certain value.
Specifically, the battery power detection circuit of this application includes bleeder circuit 1, ADC sampling circuit 2 and controller 3, and its theory of operation is:
the voltage divider circuit 1 divides the voltage of the smart lock battery to obtain a divided voltage signal, and sends the voltage signal to an ADC (Analog-to-Digital Converter) sampling circuit. It can be understood that the voltage signal obtained by the voltage dividing circuit 1 has a certain corresponding relationship with the voltage of the battery, that is, the voltage of the battery can be obtained according to the voltage signal obtained by the voltage dividing circuit 1.
After receiving the voltage signal, the ADC sampling circuit 2 performs analog-to-digital conversion on the voltage signal to obtain a digital signal representing the battery voltage, and sends the digital signal to the controller 3. More specifically, as shown in fig. 1(b), the ADC sampling circuit 2 may be integrated in the Controller 3, and the Controller 3 may be an MCU (Micro Controller Unit).
It should be noted that, based on the purpose of reminding the user to change the battery when the battery power is insufficient, the estimation accuracy requirement of the application on the battery residual power is low, so the application does not need to build a complex battery power detection circuit for pursuing high estimation accuracy of the battery residual power, and the purpose of reminding the user to change the battery when the battery power is insufficient can be met only by building the battery power detection circuit with the simple structure, thereby saving the cost.
The utility model provides a battery power detection circuitry, including bleeder circuit, ADC sampling circuit and controller. The battery remaining capacity detection circuit can detect the battery remaining capacity of the intelligent lock, send a battery replacement prompt when the battery remaining capacity is insufficient, and prompt a user to replace the battery of the intelligent lock, so that the problem that the intelligent lock cannot be normally used due to insufficient battery remaining capacity is avoided, the door opening of the user is influenced, and the experience effect of the user is further improved; moreover, the battery power detection circuit is simple in structure and low in cost.
On the basis of the above-described embodiment:
referring to fig. 2, fig. 2 is a schematic structural diagram of a third battery power detection circuit according to the present invention.
As an alternative embodiment, the voltage dividing circuit 1 includes a first resistor R1 and a second resistor R2; wherein:
the first end of the first resistor R1 is connected with the positive pole of the battery, the second end of the first resistor R1 is respectively connected with the first end of the second resistor R2 and the ADC sampling circuit, the second end of the second resistor R2 is connected with the negative pole of the battery, and the common end of the second resistor R2 is grounded.
Specifically, the voltage divider circuit 1 of the present application includes a first resistor R1 and a second resistor R2, and its operating principle is:
as shown in fig. 2, VCC represents the voltage of the battery, the first resistor R1 and the second resistor R2 divide the voltage of the battery, and the divided voltage signal is the voltage across the second resistor R2, and the purpose of the division is to reduce the voltage of the battery to the voltage range allowed to be detected by the controller 3.
As an optional embodiment, the battery level detection circuit further includes:
and the voltage stabilizing circuit is respectively connected with the voltage dividing circuit 1 and the ADC sampling circuit and is used for stabilizing the voltage of the voltage signal and inputting the voltage signal to the ADC sampling circuit.
Furthermore, the battery power detection circuit of the application further comprises a voltage stabilizing circuit for stabilizing the voltage signal output by the voltage dividing circuit 1 so as to improve the stability of the circuit.
As an alternative embodiment, the voltage regulation circuit comprises a first capacitor C1; wherein:
the first end of the first capacitor C1 is connected to the voltage divider circuit 1 and the ADC sampling circuit, respectively, and the second end of the first capacitor C1 is grounded.
Specifically, the voltage stabilizing circuit of the present application may use the first capacitor C1, and the first capacitor C1 may filter most of the interference signals present in the voltage signal output by the voltage dividing circuit 1, so as to stabilize the voltage signal output by the voltage dividing circuit 1.
As an optional embodiment, the battery level detection circuit further includes:
and the standby power supply circuit is connected with the anode of the battery and used for providing standby electric energy for the intelligent lock when the electric quantity of the battery is insufficient.
Further, consider that if the user does not in time change the battery when the battery power is not enough, then can lead to the intelligent lock because of the unable normal use of battery power is not enough, so this application avoids the unable normal use's of intelligent lock the condition to appear, sets up reserve power supply circuit. When the electric quantity of battery is not enough, reserve supply circuit can provide standby electric energy for the intelligence lock to make the intelligence lock normally open.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a standby power supply circuit according to the present invention.
As an alternative embodiment, the standby power supply circuit includes a USB interface, a transient diode D1 and an anti-reverse diode D2; wherein:
the power supply ends of the USB interface are respectively connected with the cathode of the transient diode D1 and the anode of the anti-reverse diode D2, the anode of the transient diode D1 is grounded, and the cathode of the anti-reverse diode D2 is connected with the anode of the battery.
Specifically, the standby power supply circuit of the present application includes a USB (Universal Serial Bus) interface, a transient diode D1 and an anti-reverse diode D2, and its working principle is:
when the electric quantity of battery is not enough, this application can pass through the power cord with the USB interface and connect external power source, and external power source accessible USB interface uses the intelligent lock with the electric energy supply to replace the battery power supply. In addition, considering that when a user connects the USB interface and an external power supply through a handheld power line, high-voltage static electricity on the hand can enter the power supply circuit through the USB interface, the transient diode D1 is adopted to suppress the high-voltage static electricity, so that the subsequent circuit is prevented from being damaged by the high-voltage static electricity. Meanwhile, under the condition that the battery voltage can reversely flow to the USB interface without the anti-reverse diode D2, the battery voltage is prevented from reversely flowing by utilizing the one-way conduction characteristic of the anti-reverse diode D2.
As an optional embodiment, the battery level detection circuit further includes:
and the reset circuit is connected with the controller 3 and used for generating a reset signal after receiving the reset trigger instruction so that the controller 3 performs restart operation after receiving the reset signal.
Further, considering that the controller 3 is prone to have problems under the condition of long-time continuous operation, the reset circuit is additionally arranged, when the continuous operation time of the controller 3 is long, a user can send a reset trigger instruction to the reset circuit, the reset circuit can generate a reset signal to the controller 3 after receiving the reset trigger instruction, and the controller 3 can restart after receiving the reset signal, so that the problem that the controller 3 has problems due to long-time continuous operation time is avoided.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a reset circuit according to the present invention.
As an alternative embodiment, the reset circuit includes a self-reset button S, a third resistor R3 and a second capacitor C2; wherein:
a first end of the third resistor R3 is connected to a direct current power supply, a second end of the third resistor R3 is respectively connected with a first end of the self-reset key S, a first end of the second capacitor C2 and the controller 3, a second end of the self-reset key S is connected with a second end of the second capacitor C2, and a common end of the self-reset key S is grounded;
correspondingly, the reset circuit is specifically configured to generate a falling edge signal when the self-reset key S is pressed, so that the controller 3 performs a restart operation after detecting the falling edge signal.
Specifically, the reset circuit of the application comprises a self-reset button S (self-reset: automatically bounces after being pressed), a third resistor R3 and a second capacitor C2, and the working principle is as follows:
when the self-reset key S is not pressed, the signal output to the controller 3 by the reset circuit is a high-level signal, and the magnitude of the signal is approximately equal to the output voltage VDD of the direct-current power supply; when the self-reset key S is pressed (corresponding to receiving a reset trigger command), the signal output to the controller 3 by the reset circuit is converted from a high level signal to a low level signal, that is, when the self-reset key S is pressed, the controller 3 can detect a falling edge signal (corresponding to the reset signal), so that the controller 3 performs a restart operation after detecting the falling edge signal.
As an alternative embodiment, the dc power supply comprises:
and the voltage reduction circuit is connected with two ends of the battery and is used for reducing the voltage of the battery to the required voltage of the controller 3.
Specifically, considering that the output voltage of the dc power supply should be within the voltage range allowed by the controller 3, which is generally about 3.3V, and the voltage of the battery is generally 5-6V, the dc power supply of the present application can be obtained by battery step-down, so that no additional dc power supply is needed.
The application also provides an intelligent lock, which comprises any one of the battery power detection circuits.
For the introduction of the intelligent lock provided in the present application, reference is made to the above embodiments of the battery power detection circuit, which are not repeated herein.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a battery power detection circuitry which characterized in that is applied to the intelligence lock, includes:
the voltage division circuit is connected with two ends of a battery of the intelligent lock and used for dividing the voltage of the battery to obtain a divided voltage signal;
the ADC sampling circuit is connected with the voltage division circuit and is used for carrying out analog-to-digital conversion on the voltage signal to obtain a digital signal;
and the controller is respectively connected with the ADC sampling circuit and the prompting device and is used for obtaining the residual electric quantity of the battery according to the digital signal so as to control the prompting device to send out a battery replacement prompt when the residual electric quantity is lower than a certain value.
2. The battery level detection circuit of claim 1, wherein the voltage divider circuit comprises a first resistor and a second resistor; wherein:
the first end of the first resistor is connected with the anode of the battery, the second end of the first resistor is respectively connected with the first end of the second resistor and the ADC sampling circuit, and the second end of the second resistor is connected with the cathode of the battery and the public end of the second resistor is grounded.
3. The battery level detection circuit of claim 1, further comprising:
and the voltage stabilizing circuit is respectively connected with the voltage dividing circuit and the ADC sampling circuit and is used for stabilizing the voltage of the voltage signal and inputting the voltage signal to the ADC sampling circuit.
4. The battery level detection circuit of claim 3, wherein the voltage regulator circuit includes a first capacitor; wherein:
the first end of the first capacitor is connected with the voltage division circuit and the ADC sampling circuit respectively, and the second end of the first capacitor is grounded.
5. The battery level detection circuit of claim 1, further comprising:
and the standby power supply circuit is connected with the anode of the battery and used for providing standby electric energy for the intelligent lock when the electric quantity of the battery is insufficient.
6. The battery level detection circuit of claim 5, wherein the backup power supply circuit comprises a USB interface, a transient diode, and an anti-reverse diode; wherein:
the power supply end of the USB interface is respectively connected with the cathode of the transient diode and the anode of the anti-reverse diode, the anode of the transient diode is grounded, and the cathode of the anti-reverse diode is connected with the anode of the battery.
7. The battery level detection circuit of claim 1, further comprising:
and the reset circuit is connected with the controller and used for generating a reset signal after receiving a reset trigger instruction so that the controller performs restart operation after receiving the reset signal.
8. The battery level detection circuit of claim 7, wherein the reset circuit comprises a self-reset button, a third resistor and a second capacitor; wherein:
a first end of the third resistor is connected with a direct-current power supply, a second end of the third resistor is respectively connected with a first end of the self-reset key, a first end of the second capacitor and the controller, a second end of the self-reset key is connected with a second end of the second capacitor, and a common end of the self-reset key is grounded;
correspondingly, the reset circuit is specifically configured to generate a falling edge signal when the self-reset key is pressed, so that the controller performs a restart operation after detecting the falling edge signal.
9. The battery level detection circuit of claim 8, wherein the dc power supply comprises:
and the voltage reduction circuit is connected with two ends of the battery and used for reducing the voltage of the battery to the required voltage of the controller.
10. An intelligent lock, characterized in that it comprises a battery level detection circuit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921781207.1U CN210982686U (en) | 2019-10-22 | 2019-10-22 | Battery electric quantity detection circuit and intelligent lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921781207.1U CN210982686U (en) | 2019-10-22 | 2019-10-22 | Battery electric quantity detection circuit and intelligent lock |
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| CN210982686U true CN210982686U (en) | 2020-07-10 |
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| CN201921781207.1U Active CN210982686U (en) | 2019-10-22 | 2019-10-22 | Battery electric quantity detection circuit and intelligent lock |
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| CN (1) | CN210982686U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112904216A (en) * | 2021-01-20 | 2021-06-04 | 惠州Tcl移动通信有限公司 | Battery electric quantity prompting method, system, storage medium and terminal equipment |
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2019
- 2019-10-22 CN CN201921781207.1U patent/CN210982686U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112904216A (en) * | 2021-01-20 | 2021-06-04 | 惠州Tcl移动通信有限公司 | Battery electric quantity prompting method, system, storage medium and terminal equipment |
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Denomination of utility model: A battery power detection circuit and intelligent lock Effective date of registration: 20210408 Granted publication date: 20200710 Pledgee: Bank of Communications Ltd. Shanghai Xuhui sub branch Pledgor: SHANGHAI MXCHIP INFORMATION TECHNOLOGY Co.,Ltd. Registration number: Y2021310000030 |