CN211015487U - USB interface multiplexing circuit - Google Patents
USB interface multiplexing circuit Download PDFInfo
- Publication number
- CN211015487U CN211015487U CN202020226076.7U CN202020226076U CN211015487U CN 211015487 U CN211015487 U CN 211015487U CN 202020226076 U CN202020226076 U CN 202020226076U CN 211015487 U CN211015487 U CN 211015487U
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- interface
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- stitch
- power supply
- circuit
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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
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The utility model discloses a USB interface multiplexing circuit, include the voltage input circuit who is connected with power supply stitch in the interface, with the earth connection of ground connection stitch in the interface and with the temperature signal processing circuit that ID stitch is connected in the interface, voltage input circuit and earth connection realize the intercommunication through power supply stitch and ground connection stitch when interface grafting external power source power supply line, temperature signal processing circuit and earth connection are respectively through ID stitch and ground connection stitch and temperature probe's corresponding pin connection when interface grafting temperature probe, the utility model discloses single mouthful is multiplexing, and the integrated level is high, can effectively reduce manufacturing cost, because power cord and temperature measuring device can not be put through simultaneously, effectively stop the human electric shock danger, are fit for using widely simultaneously.
Description
Technical Field
The utility model belongs to USB circuit connection field, specifically speaking relates to a USB interface multiplexing circuit.
Background
In the prior art, the interface of the external power supply and the body temperature sensor is generally a discrete interface, and the effect that a single interface simultaneously supports the two functions cannot be realized, so that the attractiveness of the product is reduced, and the production cost and the production time are increased.
Therefore, the prior art is subject to further improvement and development.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, a USB interface multiplexing circuit is proposed, which supports power supply and temperature measurement, has a better integration level, and can effectively reduce the production cost.
The utility model provides a following technical scheme:
a USB interface multiplexing circuit comprises a voltage input circuit connected with a power supply pin 1 in an interface, a grounding wire connected with a grounding pin 5 in the interface and a temperature signal processing circuit connected with an ID pin 4 in the interface, wherein the voltage input circuit and the grounding wire are communicated through the power supply pin 1 and the grounding pin 5 when an external power supply wire is plugged in the interface, and the temperature signal processing circuit and the grounding wire are respectively connected with corresponding leads of a temperature probe through the ID pin 4 and the grounding pin 5 when the temperature probe is plugged in the interface.
Preferably, the USB interface is a microUSB interface, and the microUSB interface is disposed on the electronic calendar device.
Preferably, the temperature signal processing circuit includes an analog-to-digital conversion circuit.
Preferably, the power supply pin is a micro usb interface middle pin 1, the ground pin is a micro usb interface middle pin 5, and the ID pin is a micro usb interface middle pin 4.
Has the advantages that:
the utility model discloses USB interface multiplexing circuit can realize single USB mouth multiplexing function, makes the product more pleasing to the eye, and when the user used temperature probe temperature taking body temperature, because single mouthful is multiplexing, whole electrical apparatus can not be connected to the power cord, can effectively prevent to reduce a USB interface simultaneously because the damaged consequence that causes the electric shock of power cord inoxidizing coating, can reduction in production cost, is fit for using widely.
Drawings
Fig. 1 is a circuit diagram of a USB interface multiplexing circuit according to an embodiment of the present invention;
in the figure, a power supply pin 1, a data line cathode pin 2, a data line anode pin 3, an ID pin 4, a grounding pin 5, a voltage input circuit 100 and a temperature signal processing circuit 200 are arranged.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustration and not for limitation of the present invention.
The following are embodiments of the present invention
As shown in fig. 1, the utility model provides a specific embodiment, include with the interface in the voltage input circuit 100 that the power supply stitch is connected, with the interface in the earth connection that the ground stitch is connected and with the interface in the temperature signal processing circuit 200 that the ID stitch is connected, voltage input circuit 100 and earth connection realize the intercommunication through power supply stitch and ground stitch when the interface grafting external power source power supply line, temperature signal processing circuit 200 and earth connection are through ID stitch and ground stitch and temperature probe's corresponding pin connection respectively when interface grafting temperature probe.
Specifically, the USB interface is a microUSB interface, and the microUSB interface is disposed on the electronic calendar device.
Specifically, the temperature signal processing circuit includes an analog-to-digital conversion circuit.
Specifically, the power supply pin is a micro USB interface middle pin 1, the grounding pin is a micro USB interface middle pin 5, and the ID pin is a micro USB interface middle pin 4.
The utility model discloses specific operating condition is as follows:
when an external power supply line is connected with a USB port multiplexing circuit, a power supply pin 1 is connected with a grounding pin 5, a voltage input circuit 100 is connected, power supply of an external power supply is realized, when a body temperature sensor is connected with the USB port multiplexing circuit, an ID pin 4 is connected with a temperature signal processing circuit of the body temperature sensor, the grounding pin 5 is connected with a lead of a grounding wire of the body temperature sensor, a temperature signal processing circuit 200 is connected, and transmission of temperature signals is realized. Meanwhile, because the power supply and the temperature measuring probe use the same interface, the electric shock accident caused by the fact that an external power line is damaged and directly contacts the human body when the human body utilizes the temperature measuring probe to measure the temperature is avoided.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.
Claims (5)
1. The USB interface multiplexing circuit is characterized by comprising a voltage input circuit connected with a power supply pin in an interface, a grounding wire connected with a grounding pin in the interface and a temperature signal processing circuit connected with an ID pin in the interface, wherein the voltage input circuit and the grounding wire are communicated through the power supply pin and the grounding pin when an external power supply wire is plugged in the interface, and the temperature signal processing circuit and the grounding wire are respectively connected with corresponding leads of a temperature probe through the ID pin and the grounding pin when the interface is plugged in the temperature probe.
2. The USB interface multiplexing circuit of claim 1, wherein the USB interface is a microUSB interface.
3. The USB interface multiplexing circuit of claim 2, wherein the microUSB interface is disposed on the electronic desk calendar device.
4. The USB interface multiplexing circuit of claim 1, wherein the temperature signal processing circuit comprises an analog-to-digital conversion circuit.
5. The USB interface multiplexing circuit of claim 2, wherein the power pin is a microUSB interface middle pin 1, the ground pin is a microUSB interface middle pin 5, and the ID pin is a microUSB interface middle pin 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020226076.7U CN211015487U (en) | 2020-02-27 | 2020-02-27 | USB interface multiplexing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020226076.7U CN211015487U (en) | 2020-02-27 | 2020-02-27 | USB interface multiplexing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211015487U true CN211015487U (en) | 2020-07-14 |
Family
ID=71506439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020226076.7U Active CN211015487U (en) | 2020-02-27 | 2020-02-27 | USB interface multiplexing circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211015487U (en) |
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2020
- 2020-02-27 CN CN202020226076.7U patent/CN211015487U/en active Active
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