CN210927209U - Intelligent doorbell power supply circuit - Google Patents
Intelligent doorbell power supply circuit Download PDFInfo
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- CN210927209U CN210927209U CN201921019210.XU CN201921019210U CN210927209U CN 210927209 U CN210927209 U CN 210927209U CN 201921019210 U CN201921019210 U CN 201921019210U CN 210927209 U CN210927209 U CN 210927209U
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- power supply
- supply circuit
- energy storage
- doorbell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model discloses an intelligent doorbell power supply circuit, which comprises a first AC input end, a second AC input end, a DC output end, a main power supply circuit and a standby power supply circuit, wherein two input ends of the main power supply circuit are respectively connected with the first AC input end and the second AC input end, and the output end of the main power supply circuit is connected with the DC output end; the standby power supply circuit comprises a current limiting circuit, a diode and a capacitance energy storage circuit; the capacitive energy storage circuit comprises at least two energy storage units connected in series, and each energy storage unit comprises a super capacitor and a protection resistor which are connected in parallel; the input end of the current limiting circuit and the cathode of the diode are connected with the direct current output end, the output end of the current limiting circuit is connected with the anode of the diode and one end of the capacitor energy storage circuit, and the other end of the capacitor energy storage circuit is grounded. The utility model discloses can solve the problem that can make intelligent doorbell outage when mechanical doorbell button is pressed to have the advantage that the reliability is high, stability is good.
Description
Technical Field
The utility model relates to an intelligence house field especially indicates an intelligence doorbell supply circuit.
Background
As shown in fig. 1, the conventional mechanical doorbell system generally includes a transformer TRAN1 ', a mechanical doorbell button K1' and a mechanical doorbell M1 ', wherein two ends of the mechanical doorbell button K1' are respectively connected to one end of a mechanical doorbell M1 'and one end of a secondary coil of the transformer TRAN 1', and the other end of the mechanical doorbell M1 'is connected to the other end of the secondary coil of the transformer TRAN 1'; the transformer TRAN1 ' is used for stepping down the commercial power to the required operating voltage of mechanical doorbell M1 ', and mechanical doorbell button K1 ' is used for controlling whether mechanical doorbell M1 ' circular telegram or not, and when pressing mechanical doorbell button K1 ', mechanical doorbell button K1 ' switches on and makes mechanical doorbell M1 ' circular telegram and sound, and then reminds the user.
With the development and progress of the times, the intelligent doorbell is born, and images and sound can be transmitted to an intelligent terminal (such as a mobile phone and a tablet personal computer) of a user through the Internet to inform the user. However, the sound of many intelligent terminals is small, and people sometimes put the intelligent terminals into bags or not put the intelligent terminals nearby, so that the users cannot hear the notification sound of the intelligent doorbell, and guests can take too long time outdoors and the like; and traditional mechanical doorbell, sound is big, can in time inform the user, consequently a lot of users can use mechanical doorbell and intelligent doorbell simultaneously.
In the compatible circuit structure of the existing intelligent doorbell-compatible mechanical doorbell, as shown in fig. 2, an intelligent doorbell M2 'is powered by a power supply circuit 1', two input ends of the power supply circuit 1 'are respectively connected to two ends of a mechanical doorbell button K1', and the power supply circuit 1 'converts alternating current into direct current working voltage required by the intelligent doorbell M2'; in the compatible circuit structure of the existing intelligent doorbell compatible mechanical doorbell, two ends of the mechanical doorbell M2 ' need to be connected in parallel with the PLH bypass box 2 ', so that when the mechanical doorbell button K1 ' is in an off state, the impedance of the PLH bypass box 2 ' is low, no current flows through the mechanical doorbell M1 ', and the phenomenon that when the mechanical doorbell button K1 is in an off state, a weak current flows through the mechanical doorbell M1 ' to cause a mechanical doorbell M1 ' to sound is avoided; when the button K1 'of the mechanical doorbell is pressed, the impedance of the PLH bypass box 2' is higher than that of the immediately preceding button, so that current is ensured to flow through the mechanical doorbell M1 ', and the mechanical doorbell M1' sounds normally. However, when the mechanical doorbell button K1 ' is pressed, two input ends of the power supply circuit 1 ' are short-circuited, so that the intelligent doorbell M2 ' is powered off and may be crashed or halted, in the existing solution, a lithium battery is added in the intelligent doorbell M2 ', and when the two input ends of the intelligent doorbell power supply circuit 1 ' are short-circuited, the lithium battery supplies power to the intelligent doorbell M2 ', so that the intelligent doorbell M2 ' is maintained to work; the intelligent doorbell M2 'and the mechanical doorbell switch button K1' are both arranged outdoors, and the lithium battery is easy to have the problem of failure or bulge caused by overhigh or overlow temperature in an outdoor environment, so that the reliability is poor; and the lithium battery also has the defect of short service life.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an intelligence doorbell supply circuit, it can solve the problem that has the mechanical doorbell button to make the intelligent doorbell outage when pressing in the compatible circuit of the compatible mechanical doorbell of current intelligence doorbell to have the advantage that the reliability is high, stability is good.
In order to achieve the above purpose, the solution of the present invention is:
a kind of intellectual doorbell power supply circuit, it includes the first alternating current input end, second alternating current input end, direct-current carry-out terminal and main power supply circuit, the main power supply circuit is used for changing the alternating current into the direct-current voltage that the intellectual doorbell works and needs, two input ends of the main power supply circuit connect first alternating current input end and second alternating current input end separately, the carry-out terminal of the main power supply circuit connects the direct-current carry-out terminal; the intelligent doorbell power supply circuit further comprises a standby power supply circuit; the standby power supply circuit comprises a current limiting circuit, a diode and a capacitance energy storage circuit; the capacitive energy storage circuit comprises at least two energy storage units connected in series, and each energy storage unit comprises a super capacitor and a protection resistor which are connected in parallel; the input end of the current limiting circuit and the cathode of the diode are connected with the direct current output end, the output end of the current limiting circuit is connected with the anode of the diode and one end of the capacitor energy storage circuit, and the other end of the capacitor energy storage circuit is grounded.
The standby power supply circuit further comprises a filter circuit, one end of the filter circuit is connected with the direct current output end, and the other end of the filter circuit is grounded.
The filter circuit comprises a first filter capacitor and a second filter capacitor which are connected in parallel.
The diode is a schottky diode.
The current limiting circuit comprises three current limiting resistors connected in series.
The main power supply circuit comprises a rectifying circuit and a DC-DC voltage reduction circuit; two input ends of the rectifying circuit are respectively connected with the first alternating current input end and the second alternating current input end, the output end of the rectifying circuit is connected with the input end of the DC-DC voltage reduction circuit, and the output end of the DC-DC voltage reduction circuit is connected with the direct current output end.
After the scheme is adopted, when the intelligent doorbell compatible mechanical doorbell compatible circuit is used, when a mechanical doorbell button is not pressed down, the main power supply circuit supplies power to the intelligent doorbell and charges the super capacitor in the capacitor energy storage circuit; and when machinery doorbell button pressed, when first alternating current input end and second alternating current input end short circuit promptly, super capacitor among the capacitive energy storage circuit can carry out the power supply of a period to direct current output to guarantee that intelligent doorbell can normally work in the twinkling of an eye that machinery doorbell button pressed. Because super capacitor compares the lithium cell, life is longer, and operating temperature's scope is wider, consequently the utility model has the advantages of the reliability is high, stability is good.
Drawings
FIG. 1 is a schematic electrical diagram of a prior art mechanical doorbell system;
FIG. 2 is a schematic circuit diagram of a compatible circuit of an existing intelligent doorbell-compatible mechanical doorbell;
FIG. 3 is a schematic circuit diagram of the compatible circuit applied to the intelligent doorbell and the mechanical doorbell;
fig. 4 is a schematic circuit diagram of the present invention.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.
With reference to fig. 3 and 4, the utility model discloses an intelligent doorbell power supply circuit 1, it includes first ac input VIN1, second ac input VIN2, direct current output OUT, main power supply circuit 11 and reserve power supply circuit 12.
As shown in fig. 3 and 4, the main power supply circuit 11 is used for converting alternating current into direct current voltage required by the intelligent doorbell to work; the two input ends of the main power supply circuit 1 are respectively connected to the first ac input end VIN1 and the second ac input end VIN2, and the output end of the main power supply circuit 1 is connected to the dc output end OUT. Specifically, the main power supply circuit 11 includes a rectifying circuit 111 and a DC-DC voltage-reducing circuit 112, two input ends of the rectifying circuit 111 are respectively connected to a first ac input end VIN1 and a second ac input end VIN2, an output end of the rectifying circuit 111 is connected to an input end of the DC-DC voltage-reducing circuit 112, and an output end of the DC-DC voltage-reducing circuit 112 is connected to the DC output end OUT; the rectifying circuit 111 comprises a rectifying bridge BD1, a bidirectional voltage stabilizing diode D1, a first capacitor C1, a second capacitor C2 and a first polarity capacitor CT1, two input ends of the rectifying bridge BD1 and two ends of the bidirectional voltage stabilizing diode D1 are respectively connected with two input ends of the rectifying circuit 111, an output end of the rectifying bridge BD1 is connected with one end of the first capacitor C1, one end of the second capacitor C2, the positive electrode of the first polarity capacitor CT1 and the output end of the rectifying circuit 111, and a grounding end of the rectifying bridge BD1, the other end of the first capacitor C1, the other end of the second capacitor C2 and the negative electrode of the first polarity capacitor CT1 are grounded; the DC-DC voltage reduction circuit 112 comprises a first resistor R1, a second resistor R2, a third resistor R3, a first inductor L1, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, and a DC-DC voltage reduction chip U1, wherein a VIN pin of the DC-DC voltage reduction chip U1, one end of the third capacitor C3, and one end of the first resistor R1 are connected to an input end of the DC-DC voltage reduction circuit 112, the other end of the third capacitor C3 is grounded, and the other end of the first resistor R1 is connected to an EN pin of the DC-DC voltage reduction chip U1; the GND pin and the PAD pin of the DC-DC voltage reduction chip U1 are grounded, the NC pin of the DC-DC voltage reduction chip U1 is suspended, the BST pin of the DC-DC voltage reduction chip U1 is connected with one end of a fourth capacitor C4, the other end of the fourth capacitor C4 is connected with the SW pin of the DC-DC voltage reduction chip U1 and one end of a first inductor L1, the other end of the first inductor L1 and one end of a second resistor R2 are connected with the output end of the input end of the DC-DC voltage reduction circuit 112, the other end of a second resistor R2 is connected with the FB pin of the DC-DC voltage reduction chip U1 and one end of a third resistor R3, the BIAS/VD pin of the DC-DC voltage reduction chip U1 is connected with one end of a fifth capacitor C5, and the other end of the third resistor R3 and the other end of the fifth capacitor C.
As shown in fig. 3 and 4, the standby power supply circuit 12 includes a current limiting circuit 121, a diode D2, and a capacitive energy storage circuit 122, the diode D2 is a schottky diode, the capacitive energy storage circuit 122 includes at least two energy storage units 1221 connected in series, each energy storage unit 1221 includes a super capacitor and a protection resistor connected in parallel, and the protection resistor can prevent the super capacitor from being damaged by impact due to an excessively high voltage input to the super capacitor when the power is first powered up; the input end of the current limiting circuit 121 and the negative electrode of the diode D2 are connected to the dc output end OUT, the output end of the current limiting circuit 121 is connected to the positive electrode of the diode D2 and one end of the capacitive storage circuit 122, and the other end of the capacitive storage circuit 122 is grounded. Wherein the current limiting circuit 121 may include three current limiting resistors R6, R7, R8 connected in series; as shown in fig. 4, the capacitive storage circuit 122 may include two energy storage units 1221 connected in series, where the first energy storage unit 12211 includes a first super capacitor C6 and a first protection resistor R4 connected in parallel, and the second energy storage unit 12212 includes a second super capacitor C7 and a second protection resistor R5 connected in parallel. Further, the standby power supply circuit 12 further includes a filter circuit 123, one end of the filter circuit 123 is connected to the dc output terminal OUT, the other end of the filter circuit 123 is grounded, and the output voltage of the dc output terminal OUT is stabilized through the filter circuit 123; as shown in fig. 4, the filter circuit 123 may include a first filter capacitor C8 and a second filter capacitor C9 connected in parallel.
As shown in fig. 3, when the power supply circuit 1 for an intelligent doorbell is applied to a compatible circuit of an intelligent doorbell-compatible mechanical doorbell, a first ac input terminal VIN1 and a second ac input terminal VIN2 are respectively connected to two ends of a mechanical doorbell button K1, and a dc output terminal OUT is connected to a power supply terminal of an intelligent doorbell M2; and the two ends of the mechanical doorbell button K1 are respectively connected with one end of a mechanical doorbell M1 and one end of a secondary coil of a transformer TRAN1, the other end of the mechanical doorbell M1 is connected with the other end of the secondary coil of the transformer TRAN1, and two ends of a mechanical doorbell M1 are connected with a PLH bypass box 2 in parallel. When the mechanical doorbell button K1 is not pressed down, the main power supply circuit 11 supplies power to the intelligent doorbell M2 and charges the super capacitor of the capacitor energy storage circuit 122; when the mechanical doorbell button K1 is pressed, that is, when the first ac input terminal VIN1 and the second ac input terminal VIN2 are short-circuited, the super capacitor in the capacitor energy storage circuit 122 supplies power to the dc output terminal OUT for a period of time, so that the intelligent doorbell M2 can work normally at the instant when the mechanical doorbell button K1 is pressed. Because super capacitor compares the lithium cell, life is longer, and operating temperature's scope is wider, consequently the utility model has the advantages of the reliability is high, stability is good.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.
Claims (6)
1. A kind of intellectual doorbell power supply circuit, it includes the first alternating current input end, second alternating current input end, direct-current carry-out terminal and main power supply circuit, the main power supply circuit is used for changing the alternating current into the direct-current voltage that the intellectual doorbell works and needs, two input ends of the main power supply circuit connect first alternating current input end and second alternating current input end separately, the carry-out terminal of the main power supply circuit connects the direct-current carry-out terminal; the method is characterized in that: the system also comprises a standby power supply circuit;
the standby power supply circuit comprises a current limiting circuit, a diode and a capacitance energy storage circuit; the capacitive energy storage circuit comprises at least two energy storage units connected in series, and each energy storage unit comprises a super capacitor and a protection resistor which are connected in parallel;
the input end of the current limiting circuit and the cathode of the diode are connected with the direct current output end, the output end of the current limiting circuit is connected with the anode of the diode and one end of the capacitor energy storage circuit, and the other end of the capacitor energy storage circuit is grounded.
2. The intelligent doorbell power supply circuit of claim 1, characterized in that: the standby power supply circuit further comprises a filter circuit, one end of the filter circuit is connected with the direct current output end, and the other end of the filter circuit is grounded.
3. The intelligent doorbell power supply circuit of claim 2, characterized in that: the filter circuit comprises a first filter capacitor and a second filter capacitor which are connected in parallel.
4. The intelligent doorbell power supply circuit of claim 1, characterized in that: the diode is a schottky diode.
5. The intelligent doorbell power supply circuit of claim 1, characterized in that: the current limiting circuit comprises three current limiting resistors connected in series.
6. The intelligent doorbell power supply circuit of claim 1, characterized in that: the main power supply circuit comprises a rectifying circuit and a DC-DC voltage reduction circuit; two input ends of the rectifying circuit are respectively connected with the first alternating current input end and the second alternating current input end, the output end of the rectifying circuit is connected with the input end of the DC-DC voltage reduction circuit, and the output end of the DC-DC voltage reduction circuit is connected with the direct current output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921019210.XU CN210927209U (en) | 2019-07-02 | 2019-07-02 | Intelligent doorbell power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921019210.XU CN210927209U (en) | 2019-07-02 | 2019-07-02 | Intelligent doorbell power supply circuit |
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| CN210927209U true CN210927209U (en) | 2020-07-03 |
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| CN201921019210.XU Active CN210927209U (en) | 2019-07-02 | 2019-07-02 | Intelligent doorbell power supply circuit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111968321A (en) * | 2020-10-20 | 2020-11-20 | 杭州觅睿科技有限公司 | Doorbell system |
| TWI765349B (en) * | 2020-09-11 | 2022-05-21 | 致伸科技股份有限公司 | Doorbell system |
-
2019
- 2019-07-02 CN CN201921019210.XU patent/CN210927209U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI765349B (en) * | 2020-09-11 | 2022-05-21 | 致伸科技股份有限公司 | Doorbell system |
| CN111968321A (en) * | 2020-10-20 | 2020-11-20 | 杭州觅睿科技有限公司 | Doorbell system |
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