CN116094286A - Power adapter with communication function - Google Patents
Power adapter with communication function Download PDFInfo
- Publication number
- CN116094286A CN116094286A CN202211712930.0A CN202211712930A CN116094286A CN 116094286 A CN116094286 A CN 116094286A CN 202211712930 A CN202211712930 A CN 202211712930A CN 116094286 A CN116094286 A CN 116094286A
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- China
- Prior art keywords
- voltage source
- constant voltage
- power
- power adapter
- current
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The invention discloses a power adapter with a communication function, which comprises a constant voltage source, a controlled constant voltage source, a current sampling resistor and a selector switch, wherein: the constant voltage source is used for changing output voltage according to a command of the power utilization end; the controlled constant voltage source is used for outputting different voltage signals; the selection switch is used for switching between a constant voltage source and a controlled constant voltage source; the current sampling resistor is used for collecting output current of the power supply. The invention can automatically negotiate the power supply voltage and the power supply current. On the basis of not additionally adding a cable or a wireless communication module, the configuration of the power supply voltage and the power supply current is realized.
Description
Technical Field
The invention belongs to the field of electricity, and particularly relates to a power adapter.
Background
The base station of the mowing robot needs to be connected with a power adapter to supply power for the mowing robot, and the power adapter is used for generating boundary signals to charge the mowing robot. Because the voltage level of the mower is various, such as 18V and 28V, each power adapter needs to be produced with a special voltage level, the number of accessory models is increased, and the general purpose cannot be realized.
In addition, sometimes the customer's AC outlet is farther from the base station, and a longer DC line power adapter is used. This may result in a large voltage drop across the cable when the load current is large, such that the voltage at the base station is lower than the operating voltage and cannot operate properly.
Disclosure of Invention
The invention aims to provide a power adapter with a communication function, so as to realize automatic negotiation of power supply voltage and power supply current.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the utility model provides a power adapter with communication function, includes constant voltage source, controlled constant voltage source, electric current sampling resistance, selection switch, wherein:
the constant voltage source is used for changing output voltage according to a command of the power utilization end;
the controlled constant voltage source is used for outputting different voltage signals;
the selection switch is used for switching between a constant voltage source and a controlled constant voltage source;
the current sampling resistor is used for collecting output current of the power supply.
The positive electrode of the constant voltage source is connected with the current sampling resistor through the selection switch, and the negative electrode of the constant voltage source is connected with the power utilization end; the positive pole of the controlled constant voltage source is connected with the current sampling resistor through the selector switch, and the negative pole is connected with the power utilization end.
The power utilization end comprises a variable resistor, a load switch and a load, the load is connected with the load switch in series, the load is connected with the variable resistor in parallel, the variable resistor can change the resistance value according to instructions, and different suction currents are generated at the power utilization end.
After the power adapter is electrified, the constant voltage source outputs the lowest voltage by default, and the selector switch is selected to switch to the constant voltage source;
at the power utilization end, detecting the voltage value to confirm whether the voltage is required by the user or not, and before the correct voltage level is not obtained, opening a load switch, wherein the load is not actually connected;
when the power utilization end wants to change the output voltage level, communication is initiated to the power adapter, the power adapter controls the resistance value of the variable resistor to generate currents in different states, and after the different current state combinations are encoded, a control command of the power utilization end is transmitted on the power line;
the power adapter monitors the current by monitoring the voltage on the current sampling resistor, analyzes the current state rule, analyzes according to the protocol agreed by the two parties, acquires the command sent by the power utilization terminal, and operates according to different commands.
And when the power utilization terminal and the power adapter do not need to communicate, the variable resistance circuit is closed.
The operation of the power adapter includes setting an output voltage, setting a maximum current.
When the power adapter needs to send information to the power utilization end, the selection switch is selected to the controlled constant voltage source, the controlled constant voltage source is controlled to output voltages in different states according to the formats agreed by the two parties, after the information is sent, the selection switch is switched to the constant voltage source, and the power utilization end acquires the voltage state by monitoring the voltage, so that the information sent by the power adapter is received.
The power adapter sends the information of the output voltage, the maximum current and the current temperature to the power utilization terminal.
The beneficial effects are that: the power adapter with the communication function can automatically negotiate the power supply voltage and the power supply current. On the basis of not additionally adding a cable or a wireless communication module, the configuration of the power supply voltage and the power supply current is realized.
Drawings
FIG. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a schematic diagram illustrating a communication state between a power end and a power adapter according to an embodiment;
in the figure, usource is a constant voltage source, us is a controlled constant voltage source, rs is a current sampling resistor, sa is a selection switch, rv is a variable resistor, ulink is the voltage of an electric terminal, sb is a load switch, and RL is a load.
Detailed Description
The invention is further explained below with reference to the drawings.
As shown in fig. 1, the power adapter with communication function of the present invention includes a constant voltage source Usource, a controlled constant voltage source Us, a current sampling resistor Rs, and a selection switch Sa, wherein:
the positive electrode of the constant voltage source Usource is connected with the current sampling resistor Rs through the selection switch Sa, and the negative electrode is connected with the power utilization end; the constant voltage source Usource represents the power supply of the original power adapter, and can change the output voltage according to the command of the power utilization terminal.
The positive electrode of the controlled constant voltage source Us is connected with the current sampling resistor Rs through the selection switch Sa, and the negative electrode is connected with the power utilization end; the controlled constant voltage source Us is used for outputting different voltage signals.
The current sampling resistor Rs is used for collecting the output current of the power supply.
The selection switch Sa is used to switch between the constant voltage source Usource and the controlled constant voltage source Us.
The power utilization end comprises a variable resistor Rv, a load switch Sb and a load RL, the load RL and the load switch Sb are connected in series, the load RL and the variable resistor Rv are connected in parallel, the variable resistor Rv can change the resistance value according to instructions, and different magnitudes of suction currents Isink are generated at the power utilization end. When the load switch Sb is turned off, the load RL is turned off from the power supply.
The communication process from the power utilization end to the power adapter is as follows:
after the power adapter is electrified, the constant voltage source Usource defaults to output the lowest voltage, and the switch Sa is selected to be switched to the constant voltage source Usource;
at the power end, the voltage value Usink is detected to determine whether the voltage is required by the user, and before the correct voltage level is not obtained, the load switch Sb is opened, and the load RL is not actually connected.
When the power utilization terminal wants to change the output voltage level, communication is initiated to the power adapter, the power adapter controls the resistance value of the variable resistor Rv to generate currents in different states, and after different current state combinations are encoded, a control command of the power utilization terminal is transmitted on a power line.
The power adapter monitors current by monitoring voltage on the current sampling resistor Rs, analyzes the current state rule, analyzes according to a protocol agreed by both sides, obtains a command sent by the power end, and operates according to different commands, such as setting output voltage, setting maximum current and the like.
When the power utilization terminal and the power adapter do not need to communicate, the variable resistance Rv circuit is closed.
The communication process from the power adapter to the power utilization end is as follows:
when the power adapter needs to send information to the power utilization end, the selection switch Sa is selected to the controlled constant voltage source Us, the controlled constant voltage source Us is controlled to output voltages in different states according to the format agreed by the two parties, after the information is sent, the selection switch Sa is switched to the constant voltage source Usource, and the power utilization end acquires the voltage state by monitoring the voltage Ulink, so that the information sent by the power adapter is collected.
Through the communication process, the power adapter sends the information of the output voltage, the maximum current, the current temperature and the like to the power utilization terminal, and the power utilization terminal performs the next operation.
The invention is further illustrated by the following examples.
Examples:
in this embodiment, the communication procedure from the power end to the power adapter is as follows:
after the power adapter is electrified, the constant voltage source Usource defaults to output the lowest voltage, and the switch Sa is selected to be switched to the constant voltage source Usource;
at the power end, the voltage value Usink is detected to determine whether the voltage is required by the user, and before the correct voltage level is not obtained, the load switch Sb is opened, and the load RL is not actually connected.
When the power utilization terminal wants to change the output voltage level, communication is initiated to the power adapter, the power adapter controls the resistance value of the variable resistor Rv to generate currents in different states, and after different current state combinations are encoded, a control command of the power utilization terminal is transmitted on a power line. For example:
isink=100 mA defines state a
Isink=50mA defines state b
The power adapter monitors current by monitoring voltage on the current sampling resistor Rs, analyzes the current state rule, analyzes according to a protocol agreed by both sides, obtains a command sent by the power end, and operates according to different commands, such as setting output voltage, setting maximum current and the like.
The communication process from the power adapter to the power utilization end is as follows:
when the power adapter needs to send information to the power utilization end, the selection switch Sa is selected to the controlled constant voltage source Us, the controlled constant voltage source Us is controlled to output voltages in different states according to the format agreed by the two parties, after the information is sent, the selection switch Sa is switched to the constant voltage source Usource, and the power utilization end acquires the voltage state by monitoring the voltage Ulink, so that the information sent by the power adapter is collected. For example:
us=12v defines state a
Us=6v defines state b
As defined for logic 1 and logic 0 in fig. 2, the a-state has a time ratio of 60% and the b-state has a time ratio of 40% for logic 1. For logic 0, the time duty cycle for the a state is 40% and the time duty cycle for the b state is 60%. Based on the set of rules, the two-way communication between the power adapter and the electric equipment can be realized.
The a-state duty ratio is 20%, the b-state duty ratio is 80%, and the total a-state+b-state duration is specified to be 10ms.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (8)
1. A power adapter with communication function, characterized in that: the constant voltage source, controlled constant voltage source, current sampling resistor, selector switch wherein:
the constant voltage source is used for changing output voltage according to a command of the power utilization end;
the controlled constant voltage source is used for outputting different voltage signals;
the selection switch is used for switching between a constant voltage source and a controlled constant voltage source;
the current sampling resistor is used for collecting output current of the power supply.
2. The power adapter with communication function according to claim 1, wherein: the positive electrode of the constant voltage source is connected with the current sampling resistor through the selection switch, and the negative electrode of the constant voltage source is connected with the power utilization end; the positive pole of the controlled constant voltage source is connected with the current sampling resistor through the selector switch, and the negative pole is connected with the power utilization end.
3. The power adapter with communication function according to claim 1 or 2, characterized in that: the power utilization end comprises a variable resistor, a load switch and a load, the load is connected with the load switch in series, the load is connected with the variable resistor in parallel, the variable resistor can change the resistance value according to instructions, and different suction currents are generated at the power utilization end.
4. The power adapter with communication function according to claim 1 or 2, characterized in that: after the power adapter is electrified, the constant voltage source outputs the lowest voltage by default, and the selector switch is selected to switch to the constant voltage source;
at the power utilization end, detecting the voltage value to confirm whether the voltage is required by the user or not, and before the correct voltage level is not obtained, opening a load switch, wherein the load is not actually connected;
when the power utilization end wants to change the output voltage level, communication is initiated to the power adapter, the power adapter controls the resistance value of the variable resistor to generate currents in different states, and after the different current state combinations are encoded, a control command of the power utilization end is transmitted on the power line;
the power adapter monitors the current by monitoring the voltage on the current sampling resistor, analyzes the current state rule, analyzes according to the protocol agreed by the two parties, acquires the command sent by the power utilization terminal, and operates according to different commands.
5. The power adapter with communication function according to claim 4, wherein: and when the power utilization terminal and the power adapter do not need to communicate, the variable resistance circuit is closed.
6. The power adapter with communication function according to claim 4, wherein: the operation of the power adapter includes setting an output voltage, setting a maximum current.
7. The power adapter with communication function according to claim 1 or 2, characterized in that: when the power adapter needs to send information to the power utilization end, the selection switch is selected to the controlled constant voltage source, the controlled constant voltage source is controlled to output voltages in different states according to the formats agreed by the two parties, after the information is sent, the selection switch is switched to the constant voltage source, and the power utilization end acquires the voltage state by monitoring the voltage, so that the information sent by the power adapter is received.
8. The power adapter with communication function according to claim 7, wherein: the power adapter sends the information of the output voltage, the maximum current and the current temperature to the power utilization terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211712930.0A CN116094286A (en) | 2022-12-29 | 2022-12-29 | Power adapter with communication function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211712930.0A CN116094286A (en) | 2022-12-29 | 2022-12-29 | Power adapter with communication function |
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| Publication Number | Publication Date |
|---|---|
| CN116094286A true CN116094286A (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211712930.0A Pending CN116094286A (en) | 2022-12-29 | 2022-12-29 | Power adapter with communication function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117977531A (en) * | 2024-03-29 | 2024-05-03 | 杭州径上科技有限公司 | Self-adaptive power supply device, system and method |
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2022
- 2022-12-29 CN CN202211712930.0A patent/CN116094286A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117977531A (en) * | 2024-03-29 | 2024-05-03 | 杭州径上科技有限公司 | Self-adaptive power supply device, system and method |
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