CN216016521U - Uninterrupted power supply circuit and visible doorbell - Google Patents
Uninterrupted power supply circuit and visible doorbell Download PDFInfo
- Publication number
- CN216016521U CN216016521U CN202121956183.6U CN202121956183U CN216016521U CN 216016521 U CN216016521 U CN 216016521U CN 202121956183 U CN202121956183 U CN 202121956183U CN 216016521 U CN216016521 U CN 216016521U
- Authority
- CN
- China
- Prior art keywords
- circuit
- power supply
- voltage
- load
- monitoring
- 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.)
- Active
Links
Images
Abstract
The utility model discloses an uninterruptible power supply circuit and a visual doorbell, which comprise a power supply management circuit, a voltage monitoring circuit, a load monitoring circuit, a switch control circuit and a main control chip, wherein the power supply management circuit is used for managing power supply voltage, the switch control circuit is used for switching the connection mode of the power supply management circuit and the visual doorbell, the voltage monitoring circuit is used for monitoring the output voltage of the power supply management circuit, the load monitoring circuit is used for monitoring whether the connection of the power supply management circuit and the visual doorbell is normal, the input end of the main control chip is connected with the voltage monitoring circuit and the load monitoring circuit, and the output end of the main control chip is connected with the power supply management circuit and the switch control circuit. The utility model provides an uninterruptible power supply circuit and a visible doorbell, which adopt a multistage online protection circuit to greatly improve the compatibility of products, simplify the required external environment on the premise of ensuring the stable power supply of a power supply, and greatly save the cost of projects.
Description
Technical Field
The utility model relates to the field of novel electronic circuits, in particular to an uninterruptible power supply circuit and a visual doorbell.
Background
In the process of using the visual doorbell, the door control system cannot normally work due to the problems of power failure or power supply abnormity and the like, the door and the window are in an out-of-control state, data loss occurs in the power failure process, and a door control circuit is burnt seriously or even caused.
In the prior art, a single power supply direct connection mode is generally adopted for supplying power, or a switch which supports the POE function is independently used for supplying power to the visual doorbell. Wherein, its shortcoming of independent power supply direct-connected mode power supply includes: the direct connection of a power supply can cause unstable power supply due to aging, socket plugging and the like, and even the whole system is burnt; the power supply end of the power supply does not collect and correct the power supply voltage. The disadvantages of using a switch supporting POE function alone include: the external environment needs to be built by adding a switch supporting POE power supply, so that the material cost and the installation cost of the project are increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an uninterruptible power supply circuit and a visible doorbell, which greatly improve the compatibility of products by adopting a multistage online protection circuit, simplify the required external environment on the premise of ensuring the stable power supply of a power supply and greatly save the cost of projects.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an uninterrupted power supply circuit comprises a main control chip, and a handshake detection circuit, a power management circuit and a power switching detection circuit which are connected in sequence;
the handshake detection circuit is used for detecting whether effective power supply signal input exists or not and transmitting the effective power supply signal to the power supply management circuit;
the power management circuit is used for converting the voltage of the received effective power signal through the voltage-reducing conversion circuit; the power management circuit at least comprises a first buck conversion circuit and a second buck conversion circuit;
the power supply switching detection circuit is used for acquiring a voltage value output by the power supply management circuit and a current value of a load and transmitting the voltage value and the current value to the main control chip; the connection mode is used for establishing a connection mode between the power management circuit and a load, and the connection mode comprises power direct connection or non-standard POE connection;
the main control chip is used for judging whether the first buck conversion circuit is converted into a second buck conversion circuit according to the voltage value of the power management circuit and is used for judging whether the first buck conversion circuit is connected with the load through direct connection of a power supply or non-standard POE according to the current value of the load.
Preferably, the power switching detection circuit comprises a voltage monitoring circuit, a load monitoring circuit and a switch control circuit;
the voltage monitoring circuit is used for monitoring and acquiring the output voltage of the power management circuit;
the load monitoring circuit is used for monitoring and acquiring the current of the power management circuit connected with the load;
the switch control circuit is used for switching the connection mode of the power supply management circuit and the load.
Preferably, the voltage monitoring circuit adopts a resistance voltage division circuit.
Preferably, the load monitoring circuit comprises a sampling resistor and a current sampling chip, wherein the current sampling chip is of type INA 282.
Preferably, the switch control circuit adopts an NMOS tube switch circuit or a built-in diode.
Preferably, the power management circuit adopts a multi-channel power management chip, and the model of the multi-channel power management chip is DF 1608.
Preferably, the model of the master control chip is RK 3128.
Preferably, the power management circuit is connected to the switch through a handshake detection circuit.
Preferably, the handshake detection circuit adopts an MP8001 chip, and the MP8001 chip supports an IEEE 802.3af communication protocol.
A visual doorbell comprises the uninterrupted power supply circuit.
After adopting the technical scheme, compared with the background technology, the utility model has the following advantages:
1. according to the uninterruptible power supply circuit and the visual doorbell, the voltage monitoring circuit monitors the output voltage of the power management circuit in real time, so that the power supply stability of the visual doorbell is greatly improved; whether unusual appears in the doorbell headtotail through load monitoring circuit real-time supervision, when the power cord plug, the switch control circuit automatic switch-over line directly links or the power supply mode of non-standard POE circuit, has guaranteed that visual doorbell system supplies power incessantly.
2. According to the uninterruptible power supply circuit and the visual doorbell, the diode is arranged in the switch control circuit, and the direct-connection of the line and the non-standard POE circuit adopt a unidirectional power supply mode, so that power consumption abnormity caused by current backflow can be effectively avoided.
3. According to the uninterruptible power supply circuit and the visible doorbell, the multistage online protection circuit is adopted, so that the product compatibility is greatly improved, the required external environment is simplified on the premise of ensuring the power supply stability of a power supply, and the cost of a project is greatly saved.
Drawings
FIG. 1 is a block diagram of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
In the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the apparatus or element of the present invention must have a specific orientation, and thus, should not be construed as limiting the present invention.
Examples
Referring to fig. 1, the present invention discloses an uninterruptible power supply circuit, which includes a main control chip, and a handshake detection circuit, a power management circuit, and a power switching detection circuit, which are connected in sequence;
the handshake detection circuit is used for detecting whether effective power supply signal input exists or not and transmitting the effective power supply signal to the power supply management circuit;
the power management circuit is used for converting the voltage of the received effective power signal through the voltage-reducing conversion circuit; the power management circuit at least comprises a first buck conversion circuit and a second buck conversion circuit;
the power supply switching detection circuit is used for acquiring a voltage value output by the power supply management circuit and a current value of the load and transmitting the voltage value and the current value to the main control chip; the method comprises the steps of establishing a connection mode of a power management circuit and a load, wherein the connection mode comprises direct connection of a power supply or non-standard POE connection;
the main control chip is used for judging whether the first buck conversion circuit is converted into a second buck conversion circuit according to the voltage value of the power management circuit and judging whether the first buck conversion circuit is connected with the load through direct connection of a power supply or non-standard POE according to the current value of the load.
The power supply switching detection circuit comprises a voltage monitoring circuit, a load monitoring circuit and a switch control circuit;
the voltage monitoring circuit is used for monitoring and acquiring the output voltage of the power management circuit;
the load monitoring circuit is used for monitoring and acquiring the current connected with the load by the power management circuit;
the switch control circuit is used for switching the connection mode of the power management circuit and the load.
The voltage monitoring circuit adopts a resistance voltage division circuit.
The load monitoring circuit comprises a sampling resistor and a current sampling chip, wherein the model of the current sampling chip is INA 282.
The switch control circuit adopts an NMOS tube switch circuit or is internally provided with a diode for unidirectional power supply, so that power consumption abnormity caused by current backflow can be effectively avoided.
The power management circuit adopts a multi-channel power management chip, and the model of the multi-channel power management chip is DF 1608.
The model of the master control chip is RK 3128.
The power management circuit is connected with the switch through the handshake detection circuit. The handshake detection circuit adopts an MP8001 chip, and the MP8001 chip supports an IEEE 802.3af communication protocol.
The implementation principle of the embodiment is as follows:
a handshake detection circuit monitors whether there is a valid power signal input and supplies the valid power signal to the power management circuit.
The power management circuit receives an effective power signal, and converts the received 48V voltage into 12V voltage through the first buck conversion circuit and outputs the 12V voltage.
Monitoring and collecting the output voltage of the monitoring power management circuit through a voltage monitoring circuit, and transmitting the collected value back to a main control chip for processing; when the acquired voltage value does not meet the set threshold value, the output voltage is considered to be unstable, and the main control chip controls the power management circuit to start the second buck conversion circuit to supply power; when the recovery voltage value meets the set threshold value, the output voltage of the main control chip can be determined to be normal.
Monitoring whether the connection of the real-time monitoring video doorbell system is abnormal or not through a load monitoring circuit, determining that the output current is abnormal when the voltage value acquired by the load monitoring circuit does not meet a set threshold value, and controlling a switch control circuit to automatically switch between direct connection of lines and a non-standard POE circuit by a main control chip; when the voltage value collected by the load monitoring circuit meets the set threshold value, the output current can be determined to be normal, and monitoring is carried out again. The power supply is directly connected, namely a line is directly connected, and the power supply is directly connected with a load through a wire; the non-standard POE may be connected by a network cable or the like.
A visual doorbell comprises the uninterrupted power supply circuit.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An uninterruptible power supply circuit, comprising: the device comprises a main control chip, and a handshake detection circuit, a power management circuit and a power switching detection circuit which are connected in sequence;
the handshake detection circuit is used for detecting whether effective power supply signal input exists or not and transmitting the effective power supply signal to the power supply management circuit;
the power management circuit is used for converting the voltage of the received effective power signal through the voltage-reducing conversion circuit; the power management circuit at least comprises a first buck conversion circuit and a second buck conversion circuit;
the power supply switching detection circuit is used for acquiring a voltage value output by the power supply management circuit and a current value of a load and transmitting the voltage value and the current value to the main control chip; the connection mode is used for establishing a connection mode between the power management circuit and a load, and the connection mode comprises power direct connection or non-standard POE connection;
the main control chip is used for judging whether the first buck conversion circuit is converted into a second buck conversion circuit according to the voltage value of the power management circuit and is used for judging whether the first buck conversion circuit is connected with the load through direct connection of a power supply or non-standard POE according to the current value of the load.
2. An uninterruptible power supply circuit as claimed in claim 1, wherein: the power supply switching detection circuit comprises a voltage monitoring circuit, a load monitoring circuit and a switch control circuit;
the voltage monitoring circuit is used for monitoring and acquiring the output voltage of the power management circuit;
the load monitoring circuit is used for monitoring and acquiring the current of the power management circuit connected with the load;
the switch control circuit is used for switching the connection mode of the power supply management circuit and the load.
3. An uninterruptible power supply circuit as claimed in claim 2, wherein: the voltage monitoring circuit adopts a resistance voltage division circuit.
4. An uninterruptible power supply circuit as claimed in claim 2, wherein: the load monitoring circuit comprises a sampling resistor and a current sampling chip, wherein the model of the current sampling chip is INA 282.
5. An uninterruptible power supply circuit as claimed in claim 2, wherein: the switch control circuit adopts an NMOS tube switch circuit or is internally provided with a diode.
6. An uninterruptible power supply circuit as claimed in claim 1, wherein: the power management circuit adopts a multi-channel power management chip, and the model of the multi-channel power management chip is DF 1608.
7. An uninterruptible power supply circuit as claimed in claim 1, wherein: the model of the main control chip is RK 3128.
8. An uninterruptible power supply circuit as claimed in claim 1, wherein: the power management circuit is connected with the switch through the handshake detection circuit.
9. An uninterruptible power supply circuit as claimed in claim 1, wherein: the handshake detection circuit adopts an MP8001 chip, and the MP8001 chip supports an IEEE 802.3af communication protocol.
10. A visual doorbell is characterized in that: the visual doorbell comprises an uninterruptible power supply circuit as claimed in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121956183.6U CN216016521U (en) | 2021-08-19 | 2021-08-19 | Uninterrupted power supply circuit and visible doorbell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121956183.6U CN216016521U (en) | 2021-08-19 | 2021-08-19 | Uninterrupted power supply circuit and visible doorbell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216016521U true CN216016521U (en) | 2022-03-11 |
Family
ID=80533024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121956183.6U Active CN216016521U (en) | 2021-08-19 | 2021-08-19 | Uninterrupted power supply circuit and visible doorbell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216016521U (en) |
-
2021
- 2021-08-19 CN CN202121956183.6U patent/CN216016521U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106100858B (en) | Standard POE and force non-standard POE integration to receive power supply circuit | |
| CN107547210B (en) | Non-standard power supply equipment, powered equipment and system | |
| CN102611307B (en) | A kind of parasite power supplier being applied to power receiving equipment in Power over Ethernet system | |
| CN107517107B (en) | Buck-boost dual-isolation Ethernet bidirectional power supply system and power supply method | |
| CN102497276B (en) | Power source conversion circuit and network camera with same | |
| CN203466837U (en) | Network camera power supply device | |
| CN216016521U (en) | Uninterrupted power supply circuit and visible doorbell | |
| CN210167853U (en) | Distribution automation terminal | |
| CN216930034U (en) | Communication optimization equipment and communication system based on two buses | |
| JP2003235119A5 (en) | ||
| CN205195414U (en) | Network GNSS receiver electrical power generating system | |
| CN205071015U (en) | Ethernet power supply unit | |
| CN212305487U (en) | Circuit for converting multi-signal analog to digital based on network cable transmission | |
| CN212012865U (en) | Network camera | |
| CN110752935B (en) | POE self-adaptive power supply system, method and device | |
| CN204408368U (en) | Adopt the network equipment of low-voltage DC supply | |
| CN112383404A (en) | Electric energy meter | |
| CN105337403A (en) | Network GNSS receiver power source system and control method thereof | |
| CN213817817U (en) | Gateway power supply module | |
| CN201690067U (en) | Automatic power-off socket | |
| CN113194586B (en) | Lighting control method and lighting system based on edge computing gateway | |
| CN110830266B (en) | Power supply switching management method, network equipment and power supply switching management module | |
| CN217360932U (en) | Power-off alarm system with industrial network management function | |
| CN104581050A (en) | Energy-saving remote control video monitoring system | |
| CN220234702U (en) | Power supply and receiving device based on G.hn protocol |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |