CN216387785U - Multi-path camera power supply detection circuit and multi-path camera power supply detection system - Google Patents
Multi-path camera power supply detection circuit and multi-path camera power supply detection system Download PDFInfo
- Publication number
- CN216387785U CN216387785U CN202122084810.8U CN202122084810U CN216387785U CN 216387785 U CN216387785 U CN 216387785U CN 202122084810 U CN202122084810 U CN 202122084810U CN 216387785 U CN216387785 U CN 216387785U
- Authority
- CN
- China
- Prior art keywords
- circuit
- power supply
- power
- camera
- chip
- 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 provides a multi-path camera power supply detection circuit and a multi-path camera power supply detection system, wherein the multi-path camera power supply detection circuit comprises a control unit and a power supply chip; the power supply chip comprises a plurality of transmission branches, and each transmission branch comprises an input circuit and an output circuit which are connected with each other; the input circuit of each transmission branch is used for accessing an external voltage signal and transmitting the voltage signal to the external camera connected with the input circuit through the output port of the output circuit; the power supply chip also comprises an I2C circuit connected with each transmission branch; the control unit is connected with the I2C circuit; the control unit is used for reading the voltage signal of each transmission branch circuit through the I2C circuit and determining the working state of the power supply chip according to the read voltage signal. The utility model can solve the problem that MCU resources occupy too much when the power supply of the camera is detected at present.
Description
Technical Field
The utility model relates to the technical field of automotive electronics, in particular to a multi-path camera power supply detection circuit and a multi-path camera power supply detection system.
Background
In a vehicle navigation system, a camera (such as a 360 ° panoramic camera, a high-definition reversing camera, etc.) is a very important device, and therefore, it is often necessary to detect a power supply of the camera to ensure that the camera works normally. At present, the power supply of the camera is detected by reading the voltage change of a plurality of IO ports of a camera power supply chip through a vehicle MCU (microprogrammed control unit), the MCU reads the voltage value output by the power supply chip through an AD port, and the power supply of one camera needs to occupy one AD port of the MCU when being detected. Along with the development of automatic driving technique, the camera that needs on-vehicle is more and more, generally needs 4 ways to 6 way cameras, in order to ensure that every way camera normally works, needs all detect the power of every way camera, thereby also need to occupy 4 to 6 AD ports of MCU and lead to the MCU resource to occupy too big.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a multi-path camera power supply detection circuit to solve the problem that MCU resources occupy too much when the power supply of a camera is detected at present.
In a first aspect, an embodiment of the present invention provides a multi-channel camera power detection circuit, including a control unit and a power chip; the power supply chip comprises a plurality of transmission branches, and each transmission branch comprises an input circuit and an output circuit which are connected with each other; the input circuit of each transmission branch is used for accessing an external voltage signal and transmitting the voltage signal to an external camera connected with the input circuit through an output port of the output circuit; the power supply chip further includes: an I2C circuit connected to each of the transmission legs; the control unit is connected with the I2C circuit; the control unit is used for reading the voltage signal of each transmission branch circuit through the I2C circuit and determining the working state of the power supply chip according to the read voltage signal.
With reference to the first aspect, an embodiment of the present invention provides the first implementation manner of the first aspect, where the power chip further includes a register connected to the I2C circuit; the register prestores reference voltage corresponding to each transmission branch circuit; the control unit is further configured to read the reference voltage in the register through the I2C circuit, and determine the operating state of the power chip by comparing the voltage signal of the transmission branch with the reference voltage.
With reference to the first aspect, an embodiment of the present invention provides a second implementation manner of the first aspect, where the power chip further includes a feedback circuit connected to the control unit; the feedback circuit is used for sending an alarm signal to the control unit when the power supply chip is determined to be abnormal according to the voltage signal of the transmission branch and the reference voltage.
With reference to the first aspect, an embodiment of the present invention provides a third implementation manner of the first aspect, where the power chip further includes an activation circuit connected to the I2C circuit; the control unit is used for controlling the activation circuit to send an activation signal to the I2C circuit after receiving the alarm signal so as to activate the I2C circuit.
With reference to the first aspect, an embodiment of the present invention provides a fourth implementation manner of the first aspect, where the multi-channel camera power detection circuit further includes a power supply unit connected to the power chip; the power supply unit is used for inputting voltage signals for the power supply chip.
With reference to the first aspect, an embodiment of the present invention provides a fifth implementation manner of the first aspect, where the multi-channel camera power detection circuit further includes a voltage conversion circuit, and the voltage conversion circuit is respectively connected to the power supply unit and the input circuits of different transmission branches; the voltage conversion circuit is used for converting the voltage signals output by the power supply unit into voltage signals required by different transmission branches respectively and correspondingly transmitting the converted voltage signals to input circuits of different transmission branches respectively.
With reference to the first aspect, an embodiment of the present invention provides a sixth implementation manner of the first aspect, where there are multiple power chips; and the reference voltage prestored by the register is associated with the identification information of the power supply chip.
With reference to the first aspect, an embodiment of the present invention provides a seventh implementation manner of the first aspect, where the multi-channel camera power detection circuit includes at least two power chips.
With reference to the first aspect, an embodiment of the present invention provides an eighth implementation manner of the first aspect, where the power chip includes two transmission branches.
In a second aspect, an embodiment of the present invention further provides a multi-channel camera power detection system, including the multi-channel camera power detection circuit and multiple cameras described in any one of the foregoing embodiments; and the output circuit of each transmission branch is correspondingly connected with one camera.
The utility model provides a multi-path camera power supply detection circuit and a multi-path camera power supply detection system, wherein the multi-path camera power supply detection circuit comprises a control unit and a power supply chip comprising a plurality of transmission branches, each transmission branch comprises an input circuit and an output circuit which are mutually connected, and the input circuit of each transmission branch is used for accessing an external voltage signal and transmitting the voltage signal to an external camera connected with the input circuit through an output port of the output circuit; the power supply chip further comprises an I2C circuit connected with each transmission branch, the control unit is connected with the I2C circuit, and the control unit is used for reading the voltage signal of each transmission branch through the I2C circuit and determining the working state of the power supply chip according to the read voltage signal. By adopting the technology, one power supply chip comprises a plurality of transmission branches, and each transmission branch can supply power for one camera, so that each power supply chip can supply power for a plurality of cameras; and when using MCU to detect a certain power chip for the power supply of multichannel camera as the control unit, only need to occupy MCU's a set of interface that corresponds with this power chip's I2C circuit and can read the voltage signal of all transmission branch roads in this power chip, and then confirm this power chip's operating condition, compare in prior art detect the power of camera of the same kind just need occupy MCU's an AD port through MCU, adopt above-mentioned technique to reduce greatly and detect the resource that time measuring MCU occupies the power of camera.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a multi-path camera power detection circuit according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another multi-channel camera power detection circuit according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another multi-channel camera power detection circuit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another multi-channel camera power detection circuit according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another multi-channel camera power detection circuit according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another multi-channel camera power detection circuit according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another multi-channel camera power detection circuit according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a multi-channel camera power detection system according to an embodiment of the present invention;
fig. 9 is a circuit structure diagram of a practical application of the multi-path camera power detection circuit according to the embodiment of the present invention;
fig. 10 is a circuit diagram of another practical application of the multi-channel camera power detection circuit according to the embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, the power supply of the camera is detected by reading the voltage change of a plurality of IO ports of a camera power supply chip through a vehicle MCU (microprogrammed control unit), the MCU reads the voltage value output by the power supply chip through an AD port, the power supply of one camera is detected to occupy one AD port of the MCU, and the vehicle is generally required to have 4 paths to 6 paths of cameras, so that the power supply of each camera is detected to occupy 4 to 6 AD ports of the MCU, thereby causing the MCU to occupy too large resources.
Based on the above, the utility model provides a multi-path camera power supply detection circuit, which can solve the problem that MCU resources occupy too much when the power supply of a camera is detected at present.
For the convenience of understanding the present embodiment, a detailed description will be first given of a multi-channel camera power detection circuit disclosed in the present embodiment.
Referring to a schematic structural diagram of a multi-path camera power detection circuit shown in fig. 1, the circuit mainly includes a control unit and a power chip.
The power supply chip may include a plurality of transmission branches, each of which includes an input circuit and an output circuit connected to each other; the input circuit of each transmission branch is used for accessing an external voltage signal and transmitting the voltage signal to the external camera connected with the input circuit through the output port of the output circuit; the power supply chip may further include an I2C circuit connected to each transmission branch; the control unit is connected with the I2C circuit; the control unit is used for reading the voltage signal of each transmission branch circuit through the I2C circuit and determining the working state of the power supply chip according to the read voltage signal. The control Unit may be a Micro Controller Unit (MCU), a Central Processing Unit (CPU), or the like, and may be determined according to actual needs, which is not limited herein. The specific type of the power supply chip can be determined according to actual needs, and is not limited.
Taking fig. 1 as an example, in fig. 1, the multi-channel camera power detection circuit includes a control unit and a power chip, where the power chip includes N transmission branches, where N may be an integer greater than or equal to 2, and a value of N may be determined according to an actual need, which is not limited; the N transmission branches are formed by connecting N input circuits and N output circuits in a one-to-one correspondence mode, the input circuit of each transmission branch is used for accessing an external voltage signal, and the voltage signal is transmitted to an external camera connected with the input circuit through an output port of the output circuit on the transmission branch; the power supply chip further comprises an I2C circuit connected with each transmission branch, a control unit is connected with the I2C circuit, and the control unit is used for reading the voltage signal of each transmission branch through the I2C circuit and determining the working state of the power supply chip according to the read voltage signal.
The multi-path camera power supply detection circuit provided by the embodiment of the utility model comprises a control unit and a power supply chip comprising a plurality of transmission branches, wherein each transmission branch comprises an input circuit and an output circuit which are connected with each other, and the input circuit of each transmission branch is used for accessing an external voltage signal and transmitting the voltage signal to an external camera connected with the input circuit through an output port of the output circuit; the power supply chip further comprises an I2C circuit connected with each transmission branch, the control unit is connected with the I2C circuit, and the control unit is used for reading the voltage signal of each transmission branch through the I2C circuit and determining the working state of the power supply chip according to the read voltage signal. By adopting the technology, one power supply chip comprises a plurality of transmission branches, and each transmission branch can supply power for one camera, so that each power supply chip can supply power for a plurality of cameras; and when using MCU to detect a certain power chip for the power supply of multichannel camera as the control unit, only need to occupy MCU's a set of interface that corresponds with this power chip's I2C circuit and can read the voltage signal of all transmission branch roads in this power chip, and then confirm this power chip's operating condition, compare in prior art detect the power of camera of the same kind just need occupy MCU's an AD port through MCU, adopt above-mentioned technique to reduce greatly and detect the resource that time measuring MCU occupies the power of camera.
On the basis of the multi-path camera power detection circuit, in order to further improve the accuracy of detecting the power chip, the embodiment of the present invention further provides another multi-path camera power detection circuit, see the schematic structural diagram of another multi-path camera power detection circuit shown in fig. 2, in which the power chip may further include a register connected to the I2C circuit; the register is prestored with the reference voltage corresponding to each transmission branch. For example, when a certain transmission branch normally supplies power to one camera, the transmission branch outputs a working voltage to the camera through an output port of the output circuit, and the working voltage may be a certain fixed voltage value or a certain dynamically-changing voltage range; before the working state of the power supply chip is detected, the working voltage is written into a pre-storage device of the power supply chip as a reference voltage corresponding to the transmission branch. The specific writing mode may be implemented by software on the control unit, for example, if the control unit is an MCU, a related program may be preset on the MCU, and the program may be used to write the reference voltages corresponding to all transmission branches on the power chip into the register through the I2C circuit. In the design, the software on the control unit can be directly adopted to set the reference voltage corresponding to each transmission branch circuit through the I2C circuit, and hardware does not need to be additionally accessed, so that the efficiency of setting operation is greatly improved.
Based on this, the control unit may further be configured to read the reference voltage in the register through the I2C circuit, and determine the operating state of the power chip by comparing the voltage signal of the transmission branch with the reference voltage. For example, for a certain transmission branch, the reference voltage corresponding to the transmission branch is a fixed voltage value 11V, but the voltage output by the transmission branch to the camera through the output port of the output circuit may be lower than 11V, equal to 11V, or higher than 11V; if the voltage output to the camera by the transmission branch is equal to 11V, judging that the transmission branch works normally; and if the voltage output to the camera by the transmission branch is lower than 11V or higher than 11V, judging that the transmission branch works abnormally (such as open circuit, short circuit and other faults).
On the basis of the multi-path camera power detection circuit, in order to further determine the time when the control unit detects the power chip, the embodiment of the present invention further provides another multi-path camera power detection circuit, see the schematic structural diagram of another multi-path camera power detection circuit shown in fig. 3, in which the power chip may further include a feedback circuit connected to the control unit; the feedback circuit is used for sending an alarm signal to the control unit when the power supply chip is determined to be abnormal according to the voltage signal of the transmission branch and the reference voltage. Through the design, the control unit can be reminded to execute the detection operation on the power supply chip at the first time when the power supply chip is abnormal, and the detection real-time performance is further ensured.
On the basis of the multi-path camera power supply detection circuit, in order to further optimize the detection time of the control unit on the power supply chip so as to save the resource occupation of the control unit, the embodiment of the utility model also provides another multi-path camera power supply detection circuit, which is shown in fig. 4 and is configured as another multi-path camera power supply detection circuit, wherein in the circuit, the power supply chip may further include an activation circuit connected with the I2C circuit; the control unit can be further used for controlling the activation circuit to send an activation signal to the I2C circuit after receiving the alarm signal sent by the feedback circuit so as to activate the I2C circuit. Through the design, the control unit can be reminded and the I2C circuit can be activated at the first time when the power chip is abnormal, so that the control unit can detect the power chip through the I2C circuit when the I2C circuit is in an activated state, the control unit can not detect the power chip when the I2C circuit is in an inactivated state, and the design can further save the resource occupation of the control unit while ensuring the detection real-time property.
On the basis of the multi-path camera power supply detection circuit, in order to input an external voltage signal into the power supply chip, another multi-path camera power supply detection circuit is provided in the embodiment of the present invention, referring to a schematic structural diagram of another multi-path camera power supply detection circuit shown in fig. 5, in the circuit, the power supply chip is connected with a power supply unit, and a voltage signal can be input into the power supply chip through the power supply unit to maintain the normal operation of the power supply chip. The power type of the power supply unit may be dc and/or ac according to actual needs, and is not limited. In a practical application scenario that power needs to be supplied to the vehicle-mounted device, the power supply unit may specifically be a power supply of a vehicle power supply system (such as a battery mounted on an automobile).
On the basis of the multi-path camera power supply detection circuit, in order to input an external voltage signal into a power supply chip, another multi-path camera power supply detection circuit is further provided in the embodiment of the present invention, see a schematic structural diagram of another multi-path camera power supply detection circuit shown in fig. 6, in the circuit, a voltage conversion circuit is respectively connected with a power supply unit and input circuits of different transmission branches; the voltage conversion circuit can convert the voltage signals output by the power supply unit into voltage signals required by different transmission branches respectively, and correspondingly transmit the converted voltage signals to input circuits of different transmission branches respectively.
In the practical application process, the using number of the power chips can be determined according to the number of the vehicle-mounted cameras, and when the number of the vehicle-mounted cameras exceeds the number of transmission branches contained in one power chip, a plurality of power chips are needed to supply power to the cameras. Aiming at the situation that the multi-path camera power supply detection circuit comprises a plurality of power supply chips, before different power supply chips are detected through the control unit, reference voltages corresponding to different transmission branches of one power supply chip are associated with identification information of the power supply chip, and the associated reference voltages and the associated identification information are written into a pre-storage device of the power supply chip. The specific writing mode may be implemented by software on the control unit, for example, if the control unit is an MCU, a related program may be preset on the MCU, and the reference voltages corresponding to all transmission branches of the power supply chip and the identification information of the power supply chip may be written into a register through an I2C circuit by using the program. Through the operation mode of writing in the register after associating reference voltage with identification information, when the control unit detects a plurality of power chips simultaneously, the control unit can read the reference voltage and the identification information in the register through the I2C circuit to distinguish each transmission branch of each power chip from a plurality of power chips, and then judge the working state of the transmission branch by comparing the voltage signal of the same transmission branch with the reference voltage, and finally judge the working states of different power chips.
Taking fig. 7 as an example, refer to a schematic structural diagram of another multi-channel camera power detection circuit shown in fig. 7, where the multi-channel camera power detection circuit includes a control unit and M power chips, where M may be an integer greater than or equal to 2, and a value of M may be determined according to actual needs, which is not limited; the control unit is respectively connected with the M power chips and can be used for simultaneously detecting and correspondingly controlling the M power chips.
Based on the multi-path camera power detection circuit, the embodiment of the utility model also provides a multi-path camera power detection system, which comprises the multi-path camera power detection circuit and a plurality of cameras; the output circuit of the transmission branch of each power supply chip is correspondingly connected with one camera.
Taking fig. 8 as an example, refer to a schematic structural diagram of a multi-channel camera power detection system shown in fig. 8, where the system includes a control unit and K power chips, where K may be an integer greater than or equal to 1, and a value of K may be determined according to actual needs, which is not limited; the control unit is respectively connected with the K power chips; each power supply chip comprises n transmission branches, wherein n can be an integer greater than or equal to 2, and the value of n can be determined according to actual needs, which is not limited; the output circuit of each transmission branch is correspondingly connected with one camera.
By adopting the design, one power supply chip comprises a plurality of transmission branches, and each transmission branch can supply power for one camera, so that each power supply chip can supply power for a plurality of cameras; when the MCU is used as a control unit to detect one or more power chips, voltage signals of all transmission branches in each power chip can be read respectively only by occupying one or more groups of interfaces corresponding to the I2C circuits of the MCU and the power chips, and then the working state of each power chip is determined.
The specific application of the multi-path camera power detection circuit can be seen in fig. 9 and 10, the power chips are of MAX20084 type, and the working process is similar to the related contents, so that the detailed description is omitted.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A multi-path camera power supply detection circuit is characterized by comprising a control unit and a power supply chip;
the power supply chip comprises a plurality of transmission branches, and each transmission branch comprises an input circuit and an output circuit which are connected with each other; the input circuit of each transmission branch is used for accessing an external voltage signal and transmitting the voltage signal to an external camera connected with the input circuit through an output port of the output circuit;
the power supply chip further includes: an I2C circuit connected to each of the transmission legs;
the control unit is connected with the I2C circuit; the control unit is used for reading the voltage signal of each transmission branch circuit through the I2C circuit and determining the working state of the power supply chip according to the read voltage signal.
2. The multi-camera power detection circuit of claim 1, wherein the power chip further comprises a register coupled to the I2C circuit; the register prestores reference voltage corresponding to each transmission branch circuit;
the control unit is further configured to read the reference voltage in the register through the I2C circuit, and determine the operating state of the power chip by comparing the voltage signal of the transmission branch with the reference voltage.
3. The multi-channel camera power detection circuit of claim 2, wherein the power chip further comprises a feedback circuit connected to the control unit; the feedback circuit is used for sending an alarm signal to the control unit when the power supply chip is determined to be abnormal according to the voltage signal of the transmission branch and the reference voltage.
4. The multi-camera power detection circuit of claim 3, wherein the power chip further comprises an activation circuit connected to the I2C circuit; the control unit is used for controlling the activation circuit to send an activation signal to the I2C circuit after receiving the alarm signal so as to activate the I2C circuit.
5. The multi-camera power detection circuit according to any one of claims 2 to 4, further comprising a power supply unit connected to the power chip; the power supply unit is used for inputting voltage signals for the power supply chip.
6. The multi-channel camera power detection circuit according to claim 5, further comprising a voltage conversion circuit, wherein the voltage conversion circuit is respectively connected to the power supply unit and the input circuits of different transmission branches; the voltage conversion circuit is used for converting the voltage signals output by the power supply unit into voltage signals required by different transmission branches respectively and correspondingly transmitting the converted voltage signals to input circuits of different transmission branches respectively.
7. The multi-channel camera power detection circuit according to claim 6, wherein there are a plurality of power chips; and the reference voltage prestored by the register is associated with the identification information of the power supply chip.
8. The multi-channel camera power detection circuit according to claim 7, wherein the multi-channel camera power detection circuit comprises at least two of the power chips.
9. The multi-channel camera power detection circuit according to claim 7, wherein the power chip comprises two of the transmission branches.
10. A multi-camera power detection system, comprising the multi-camera power detection circuit of any one of claims 1 to 9 and a plurality of cameras; and the output circuit of each transmission branch is correspondingly connected with one camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122084810.8U CN216387785U (en) | 2021-08-30 | 2021-08-30 | Multi-path camera power supply detection circuit and multi-path camera power supply detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122084810.8U CN216387785U (en) | 2021-08-30 | 2021-08-30 | Multi-path camera power supply detection circuit and multi-path camera power supply detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216387785U true CN216387785U (en) | 2022-04-26 |
Family
ID=81239870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122084810.8U Active CN216387785U (en) | 2021-08-30 | 2021-08-30 | Multi-path camera power supply detection circuit and multi-path camera power supply detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216387785U (en) |
-
2021
- 2021-08-30 CN CN202122084810.8U patent/CN216387785U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8207759B2 (en) | MIPI analog switch for automatic selection of multiple inputs based on clock voltages | |
| CN100464193C (en) | Chip testing system and method | |
| US20160217052A1 (en) | Debug circuit, debug request circuit and debug system | |
| CN101910972A (en) | Interface device for host device, interface device for slave device, host device, slave device, communication system and interace voltage switching method | |
| CN102135930A (en) | Error detecting device and method for computer system | |
| CN110659238A (en) | Data communication system | |
| US6766401B2 (en) | Increasing control information from a single general purpose input/output (GPIO) mechanism | |
| CN105446837A (en) | Method, device and system for detecting whether IIC (inter-integrated circuit) interface device is connected | |
| CN114297134A (en) | Chip architecture and signal integrity test method | |
| CN108885573A (en) | Safety device | |
| CN216387785U (en) | Multi-path camera power supply detection circuit and multi-path camera power supply detection system | |
| US9727509B2 (en) | GPIB bus to ZigBee interconnection | |
| US11343065B2 (en) | Serial bidirectional communication circuit and method thereof | |
| CN104360973A (en) | Communicating system, communicating method and relevant communicating devices | |
| US9262358B2 (en) | Expresscard adapter and electronic device | |
| CN216561773U (en) | Automatic wire jumper device and communication equipment | |
| US11334506B2 (en) | Interface connection device, system and method thereof | |
| CN201378316Y (en) | Universal input/output interface extension circuit and mobile terminal with same | |
| US20110087812A1 (en) | Multi-master bi-directional i2c bus buffer | |
| CN112834964B (en) | Detection method, device and equipment for wiring line sequence of self-adaptive combiner | |
| US20200194844A1 (en) | Daisy-chain battery cells system with differential communication interfaces | |
| CN219958106U (en) | Multi-path voltage circuit and system for detection controller and electric automobile | |
| KR20200129333A (en) | Method for assigning different addresses on a plurality of slave devices using I2C communication protocol and a device for the same | |
| CN210605685U (en) | Testing device for vehicle-mounted multimedia host | |
| CN114968874B (en) | Quick parallel interrupt detection circuit suitable for multi-sensor system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |