CN214042262U - USB power supply control device and USB communication system - Google Patents
USB power supply control device and USB communication system Download PDFInfo
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- CN214042262U CN214042262U CN202120118423.9U CN202120118423U CN214042262U CN 214042262 U CN214042262 U CN 214042262U CN 202120118423 U CN202120118423 U CN 202120118423U CN 214042262 U CN214042262 U CN 214042262U
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Abstract
The utility model discloses a USB power supply control device and a USB communication system, wherein the USB power supply control device comprises a main power supply port, a slave power supply port, a main communication port, a slave communication port and a control module; the control module comprises a controlled switch and a detection port for detecting the running state of main equipment, the detection port is connected with the control end of the controlled switch, and the controlled switch controls the power-on connection of the main power supply port and the auxiliary power supply port according to a level signal transmitted by the detection port. According to the technical scheme, the control module is used for realizing the power-on connection of the main power supply port and the slave power supply port, the detection port and the controlled switch are configured in the control module, whether the main equipment is in the running state or not is detected by using the detection port, and the controlled switch controls the power-on connection of the main power supply port and the slave power supply port according to the level signal transmitted by the detection port, so that the power supply of the main equipment to the slave equipment is prevented during the stop running of the main equipment.
Description
Technical Field
The utility model relates to an electronic circuit technical field, more specifically say and relate to a USB power supply controlling means and use this USB power supply controlling means's USB communication system that relates to.
Background
Universal Serial Bus (USB) is widely used because of its advantages of small size, convenience, high transmission speed, etc. The USB is used in the equipment, so that the wiring mode is simplified, and a large amount of internal space of the equipment and design and development time are saved.
The conventional USB communication system mainly comprises a master device and a slave device, wherein the slave device obtains electricity from the master device through a USB bus and simultaneously performs data transmission with the master device through the USB bus. The existing USB communication system has a condition that when the master device is shut down and stops running, the slave device is not powered off and still in a working state, when the master device is restarted, unpredictable faults can occur to both the master device and the slave device, at the moment, the USB bus needs to be unplugged, then the USB bus is plugged in, and the application software of the device is restarted, so that the device can enter a normal application state, but the operation is obviously unreasonable in practical application.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a USB power supply controlling means and USB communication system to solve one or more technical problem that exist among the prior art, provide a profitable selection or create the condition at least.
The technical scheme adopted for solving the technical problems is as follows:
a USB power supply control device comprising:
the main power port is used for being connected with a power port in a USB bus interface of the main equipment;
the slave power port is used for being connected with a power port in a USB bus interface of the slave equipment;
the main communication port is used for being connected with a communication port in a USB bus interface of the main equipment;
the slave communication port is used for being connected with the communication port in the USB bus interface of the slave device;
and a control module;
the master communication port is connected with the slave communication port, and the master power supply port is connected with the slave power supply port through the control module;
the control module comprises a controlled switch and a detection port for detecting the running state of main equipment, the detection port is connected with the control end of the controlled switch, and the controlled switch controls the power-on connection of the main power supply port and the auxiliary power supply port according to a level signal transmitted by the detection port.
As a further improvement of the above technical solution, the present technical solution further includes a voltage conversion module, and the master power port is connected to the slave power port through the voltage conversion module and the controlled switch connected in series.
As a further improvement of the above technical solution, the voltage conversion module is a Buck-Boost converter.
As a further improvement of the above technical solution, the protection module further includes a self-recovery fuse, a first LED indicator and a second LED indicator, the self-recovery fuse is connected in series between the main power port and the slave power port, the first LED indicator and the second LED indicator are respectively disposed at two ends of the self-recovery fuse, an anode of the first LED indicator is connected to one end of the self-recovery fuse, an anode of the second LED indicator is connected to the other end of the self-recovery fuse, and a cathode of the first LED indicator and a cathode of the second LED indicator are both grounded.
As a further improvement of the above technical solution, the present technical solution further includes a driving circuit, and the detection port is connected to the control end of the controlled switch through the driving circuit.
The utility model discloses still disclose a USB communication system simultaneously, including main equipment, slave unit and above USB power supply controlling means, USB power supply controlling means main power source port and main communication port respectively with the main equipment is connected, USB power supply controlling means from the power source port and from the communication port respectively with the slave unit is connected, control module detect the port with the main equipment is connected.
The utility model has the advantages that: according to the technical scheme, the control module is used for realizing the power-on connection of the main power supply port and the slave power supply port, the detection port and the controlled switch are configured in the control module, whether the main equipment is in the running state or not is detected by using the detection port, and the controlled switch controls the power-on connection of the main power supply port and the slave power supply port according to the level signal transmitted by the detection port, so that the power supply of the main equipment to the slave equipment is prevented during the stop running of the main equipment.
Drawings
The present invention will be further explained with reference to the drawings and examples;
fig. 1 is a schematic diagram of the circuit structure of the present invention.
Detailed Description
This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, if words such as "a plurality" are used, the meaning is one or more, the meaning of a plurality of words is two or more, and the meaning of more than, less than, more than, etc. is understood as not including the number, and the meaning of more than, less than, more than, etc. is understood as including the number.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
Referring to fig. 1, the present application discloses a USB power supply control device, a first embodiment of which includes:
the main power port is used for being connected with a power port in a USB bus interface of the main equipment;
the slave power port is used for being connected with a power port in a USB bus interface of the slave equipment;
the main communication port is used for being connected with a communication port in a USB bus interface of the main equipment;
the slave communication port is used for being connected with the communication port in the USB bus interface of the slave device;
and a control module;
the master communication port is connected with the slave communication port, and the master power supply port is connected with the slave power supply port through the control module;
the control module comprises a controlled switch and a detection port for detecting the running state of main equipment, the detection port is connected with the control end of the controlled switch, and the controlled switch controls the power-on connection of the main power supply port and the auxiliary power supply port according to a level signal transmitted by the detection port.
Specifically, in this embodiment, the control module is used to implement the power-on connection between the master power port and the slave power port, the control module is configured with the detection port and the controlled switch, the detection port is used to detect whether the master device is in an operating state, and the controlled switch controls the power-on connection between the master power port and the slave power port according to the level signal transmitted by the detection port, so as to ensure that the master device is prevented from supplying power to the slave device during the period of stopping operation.
Further, as a preferred implementation manner, in this embodiment, a voltage conversion module is further configured, and the main power port is connected to the slave power port through the voltage conversion module and the controlled switch which are connected in series. Further, the voltage conversion module in this embodiment is a Buck-Boost converter. In this embodiment, the adaptation degree of the power supply parameters between the master device and the slave device is improved by setting the voltage conversion module.
Further as a preferred implementation manner, a protection module is further configured in this embodiment, the protection module includes a self-recovery fuse, a first LED warning light and a second LED warning light, the self-recovery fuse is connected in series between the main power supply port and the slave power supply port, the first LED prompt lamp and the second LED prompt lamp are respectively arranged at two ends of the self-recovery fuse, the anode of the first LED prompting lamp is connected with one end of the self-recovery fuse, the anode of the second LED prompting lamp is connected with the other end of the self-recovery fuse, the negative electrode of the first LED indicator light and the negative electrode of the second LED indicator light are both grounded, the self-recovery fuse is utilized to realize the overcurrent protection function in the embodiment, meanwhile, the first LED prompt lamp and the second LED prompt lamp are arranged on two sides of the self-recovery fuse, so that a user can conveniently know whether the self-recovery fuse is normal or not.
Further, as a preferred implementation manner, in this embodiment, a driving circuit is further configured, and the detection port is connected to the control end of the controlled switch through the driving circuit, so that the driving capability of the controlled switch can be effectively improved through the arrangement of the driving circuit.
The application also discloses a USB communication system, and a first embodiment of the USB communication system comprises a master device, a slave device and the first embodiment of the USB power supply control device, wherein the master power port and the master communication port of the USB power supply control device are respectively connected with the master device, and the slave power port and the slave communication port of the USB power supply control device are respectively connected with the slave device.
While the preferred embodiments of the present invention have been described in detail, it will be understood by those skilled in the art that the foregoing and various other changes, omissions and deviations in the form and detail thereof may be made without departing from the scope of this invention.
Claims (6)
1. A USB power supply control device is characterized in that: the method comprises the following steps:
the main power port is used for being connected with a power port in a USB bus interface of the main equipment;
the slave power port is used for being connected with a power port in a USB bus interface of the slave equipment;
the main communication port is used for being connected with a communication port in a USB bus interface of the main equipment;
the slave communication port is used for being connected with the communication port in the USB bus interface of the slave device;
and a control module;
the master communication port is connected with the slave communication port, and the master power supply port is connected with the slave power supply port through the control module;
the control module comprises a controlled switch and a detection port for detecting the running state of main equipment, the detection port is connected with the control end of the controlled switch, and the controlled switch controls the power-on connection of the main power supply port and the auxiliary power supply port according to a level signal transmitted by the detection port.
2. A USB power supply control device according to claim 1, wherein: the power supply system further comprises a voltage conversion module, and the main power supply port is connected with the auxiliary power supply port through the voltage conversion module and the controlled switch which are connected in series.
3. A USB power supply control device according to claim 2, wherein: the voltage conversion module is a Buck-Boost converter.
4. A USB power supply control device according to claim 1, wherein: still include protection module, protection module includes self-resuming insurance, first LED warning light and second LED warning light, the self-resuming insurance concatenates the main power source port and from between the power source port, first LED warning light and second LED warning light sets up respectively the both ends of self-resuming insurance, the positive pole of first LED warning light with the one end of self-resuming insurance is connected, the positive pole of second LED warning light with the other end of self-resuming insurance is connected, the negative pole of first LED warning light and the negative pole of second LED warning light all grounds.
5. A USB power supply control device according to claim 1, wherein: the detection circuit comprises a detection port and a control end, wherein the detection port is connected with the control end of the controlled switch through the drive circuit.
6. A USB communication system, comprising a master device, a slave device and the USB power supply control apparatus of any one of claims 1 to 5, wherein the master power port and the master communication port of the USB power supply control apparatus are respectively connected to the master device, the slave power port and the slave communication port of the USB power supply control apparatus are respectively connected to the slave device, and the detection port of the control module is connected to the master device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120118423.9U CN214042262U (en) | 2021-01-15 | 2021-01-15 | USB power supply control device and USB communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120118423.9U CN214042262U (en) | 2021-01-15 | 2021-01-15 | USB power supply control device and USB communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214042262U true CN214042262U (en) | 2021-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120118423.9U Active CN214042262U (en) | 2021-01-15 | 2021-01-15 | USB power supply control device and USB communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214042262U (en) |
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2021
- 2021-01-15 CN CN202120118423.9U patent/CN214042262U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A USB power supply control device and USB communication system Effective date of registration: 20230228 Granted publication date: 20210824 Pledgee: Bank of China Limited by Share Ltd. Foshan branch Pledgor: GUANGDONG WEIREN MEDICAL TECHNOLOGY Co.,Ltd. Registration number: Y2023980033590 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |