CN210924279U - Matrix driving device - Google Patents
Matrix driving device Download PDFInfo
- Publication number
- CN210924279U CN210924279U CN201921794854.6U CN201921794854U CN210924279U CN 210924279 U CN210924279 U CN 210924279U CN 201921794854 U CN201921794854 U CN 201921794854U CN 210924279 U CN210924279 U CN 210924279U
- Authority
- CN
- China
- Prior art keywords
- signal
- module
- switch matrix
- communication interface
- matrix
- 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
Landscapes
- Small-Scale Networks (AREA)
Abstract
The utility model discloses a matrix driving device, the matrix driving device comprises a switch matrix, a switch matrix switching control module and a driving conversion module, wherein the switch matrix switching control module is connected with the switch matrix and is used for identifying the signal type of the signal output by an automobile OBD communication interface; the driving conversion module is connected with the switch matrix, and the switch matrix switching control module is used for switching on a channel matched with the signal type in the switch matrix according to the signal type so as to communicate with an external controller after signal conversion is carried out through a signal conversion circuit matched with the signal type in the driving conversion module. The signal conversion module is used for converting the signals of the automobile OBD communication interface into the signals of the plurality of types and randomly distributed on each pin position and transmitting the signals to the external controller, so that the automobile OBD communication interface can be normally communicated with the external controller after the signals of the plurality of types output by the automobile OBD communication interface are correctly converted.
Description
Technical Field
The utility model relates to an automotive communication drives technical field, especially relates to a matrix drive device.
Background
The automobile mainly communicates with an external controller through an automobile OBD (On Board Diagnostics) communication interface, and because the types of signals output by the automobile OBD interface are various, and various types of signals cannot be directly transmitted to the external controller to be read. The signal output by the external controller can not be directly transmitted to the controller in the automobile for reading through the automobile OBD communication interface. At this time, a signal conversion circuit is needed to convert each type of signal output by the automobile OBD interface into a signal that can be read by the external controller, and convert the signal output by the external controller into a signal of a type corresponding to the automobile OBD communication interface. Since the types of signals of the OBD communication interface of the vehicle are different, in order to switch the types of signals of the OBD communication interface of the vehicle to the corresponding signal conversion circuit, a switch matrix is required to implement channel switching selection control of the types of signals. The switch matrix is typically made up of a cascade of a plurality of relay switch matrices. When the signal conversion circuit is used, the signal conversion circuit is switched to the corresponding signal conversion circuit in a manual mode through the display control terminal according to different vehicles and different types of signals of the OBD communication interfaces of the vehicles, and the operation and the use are relatively troublesome.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the related art to a certain extent. To this end, an object of the present invention is to provide a matrix driving apparatus.
To achieve the above object, according to the present invention, a matrix driving device includes:
the switch matrix is used for being connected with the automobile OBD communication interface so as to receive signals output by the automobile OBD communication interface;
the switch matrix switching control module is connected with the switch matrix and is used for identifying the signal type of the signal output by the OBD communication interface of the automobile;
and the switch matrix switching control module is used for switching on a channel matched with the signal type in the switch matrix according to the signal type so as to communicate with an external controller after signal conversion is carried out through a signal conversion circuit matched with the signal type in the drive conversion module.
Further, according to an embodiment of the present invention, the switch matrix switching control module includes:
the switch matrix;
the ADC voltage detection and identification module is connected with the switch matrix and is used for performing voltage sampling and signal type identification on the signal output by the automobile OBD communication interface;
and the switching control module is connected with the switch matrix and used for switching on a channel matched with the signal type in the switch matrix according to the signal type.
Further, according to the utility model discloses an embodiment, switch matrix switches control module still includes:
and the communication interface module is respectively connected with the ADC voltage detection identification module, the switching control module and the external controller, and is used for outputting the signal type identified by the ADC voltage detection identification module to the external controller and transmitting the switching matrix channel connection control information output by the external controller to the switching control module.
Further, according to the utility model discloses an embodiment, switch matrix switches control module still includes:
and the memory module is respectively connected with the switching control module and the communication interface module so as to store the switching matrix channel switching control information output by the external controller through the communication interface module.
Further, according to the utility model discloses an embodiment, the switch matrix includes high-speed signal change over switch, high-speed signal change over switch keep away from car OBD interface signal end and be connected with external control ware, with under the control of switching control module, with car OBD communication interface input/output's ethernet signal transmission to external control ware.
Further, according to an embodiment of the present invention, the driving conversion module includes: any one or more of a CAN signal conversion circuit, an RS232 signal conversion circuit, an RS485 signal conversion circuit, a J1850 signal conversion circuit, a K/L line signal conversion circuit and a logic gate level conversion circuit.
Further, according to an embodiment of the present invention, the matrix driving apparatus further includes: the direct current power supply conversion module is used for being connected with an automobile OBD communication interface so as to convert a power supply output by the automobile OBD communication interface into a power supply of the switch matrix switching control module and the driving conversion module.
Further, according to the utility model discloses an embodiment, DC power supply conversion module still is connected with external control ware, for external control ware power supply.
In the embodiment of the utility model, the switch matrix switching control module is connected with the switch matrix and used for identifying the signal type of the signal output by the OBD communication interface of the automobile; drive conversion module and switch matrix connection, switch matrix switching control module according to the signal type, with signal type assorted passageway switch-on in the switch matrix to carry out signal conversion back and external control ware communication with signal type assorted signal conversion circuit through in the drive conversion module, through switch matrix switching control module and drive conversion module, can discern the type of car OBD communication interface output signal, and can select and put through according to the type of signal and carry out the conversion of signal with signal type assorted signal conversion circuit in the drive conversion module. The automatic signal switching-on device realizes that signals of various types and randomly distributed on each pin on an automobile OBD communication interface are correctly switched on to a signal conversion module for correct signal conversion and then transmitted to an external controller so as to be normally communicated with the external controller after being correctly converted with signals of various types output by the automobile OBD communication interface, has high automation degree and simple and flexible application, and has other beneficial effects described in the following embodiments.
Drawings
Fig. 1 is a block diagram of a matrix driving device according to an embodiment of the present invention, and a connection relationship diagram between the matrix driving device and an OBD communication interface and an external controller of an automobile;
fig. 2 is a block diagram of another matrix driving device structure and a connection relationship diagram of the matrix driving device, an automobile OBD communication interface and an external controller according to an embodiment of the present invention.
Reference numerals:
an automotive OBD communication interface 10;
a matrix drive device 20;
a switch matrix switching control module 201;
a communication interface module 2011;
an ADC voltage detection identification module 2012;
a handover control module 2013;
a memory module 2014;
a drive conversion module 202;
a direct current power supply conversion module 203;
a switch matrix 204;
an external controller 30.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
In order to make the technical field person understand the scheme of the present invention better, the following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical scheme in the embodiments of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
In one aspect, referring to fig. 1 and 2, an embodiment of the present invention provides a matrix driving apparatus 20, including: the system comprises a switch matrix 204, a switch matrix switching control module 201 and a driving conversion module 202, wherein the switch matrix 204 is used for being connected with an automobile OBD communication interface 10, and the switch matrix switching control module 201 is connected with the switch matrix 204 and used for receiving signals output by the automobile OBD communication interface 10 and identifying the signal types of the signals output by the automobile OBD communication interface 10; in application, the external controller 30 is connected to the vehicle OBD communication interface 10 through the matrix driving device 20 to sample and communicate signals of various signal terminals on the vehicle OBD communication interface 10. As shown in fig. 2, the switch matrix switching control module 201 is connected to the switch matrix 204, and each row of the switch matrix 204 is connected to a signal terminal of the OBD communication interface 10. The utility model discloses an in the embodiment, switch matrix 204 includes 13 signal input/output ends to be connected with 13 signal ends of receiving car OBD communication interface 10, carry out signal sampling and communication. After each signal sampling end on the automobile OBD communication interface 10 is subjected to signal sampling by the switch matrix switching control module 201 through the switch matrix 204, each sampling signal is subjected to signal type identification, so that according to the signal type of each signal on the automobile OBD communication interface 10, a signal conversion circuit matched with the signal type is selected to perform signal conversion, the converted signal can be supplied to the external controller 30 to be read, and the external controller is enabled to communicate with a controller in an automobile through the OBD interface.
The driving conversion module 202 is connected to the switch matrix 204, and the switch matrix switching control module 201 is configured to switch on a channel in the switch matrix 204 matching with the signal type according to the signal type, so as to perform signal conversion by a signal conversion circuit in the driving conversion module 202 matching with the signal type and then communicate with the external controller 30. As shown in fig. 2, the switch matrix switching control module 201 includes a plurality of signal conversion circuits, each of which can convert a signal of one type output by the vehicle OBD communication interface 10, since the vehicle OBD communication interface 10 outputs a plurality of types of signals in most cases. At this time, it is necessary to output various types of signals to a signal conversion circuit matched with the signal types for signal conversion, so as to correctly convert the various types of signals output by the vehicle OBD communication interface 10 and transmit the converted signals to the external controller 30, so that the external controller 30 can normally communicate with a controller in the vehicle through the vehicle OBD communication interface 10.
Similarly, each path of signal output by the external controller 30 is also converted into various types of signals by the corresponding signal conversion circuit on the driving conversion module 202, and then correctly output to the automobile OBD communication interface 10 by the switch matrix 204, so as to implement bidirectional communication between the external controller 30 and the controller in the automobile.
In the embodiment of the present invention, the signal type identification of the signal output by the automobile OBD communication interface 10 is performed through the switch matrix switching control module 201; the switch matrix switching control module 201 switches on a channel matched with the signal type in the switch matrix 204 according to the signal type, so that a signal output by the automobile OBD communication interface 10 is subjected to signal conversion through a signal conversion circuit matched with the signal type in the driving conversion module 202 and then is communicated with the external controller 30, the type of the signal output by the automobile OBD communication interface 10 can be identified through the switch matrix switching control module 201 and the driving conversion module 202, and the signal conversion circuit matched with the signal type in the driving conversion module 202 can be selected and switched on according to the signal type to perform signal conversion. The automatic signal transmission device realizes that signals of various types and randomly distributed on each pin on the automobile OBD communication interface are correctly connected to the signal conversion module for correct signal conversion and then transmitted to the external controller, so that the signals can be normally communicated with the external controller 30 after being correctly converted with various types of signals output by the automobile OBD communication interface 10, and the automatic signal transmission device is high in automation degree and simple and flexible to apply.
Referring to fig. 2, the switch matrix switching control module 201 includes: the ADC voltage detection and identification module 2012 and the switching control module 2013, where the ADC voltage detection and identification module 2012 is connected to the switch matrix 204, and is configured to perform voltage sampling on a signal output by the automobile OBD communication interface 10, and perform signal type identification on the signal output by the automobile OBD communication interface 10 according to the voltage sampling value; as shown in fig. 2, the switch matrixes 204 are respectively connected to the vehicle OBD communication interfaces 10, and perform signal transmission through the vehicle OBD communication interfaces 10, and perform transmission channel selection on the signals of the vehicle OBD communication interfaces 10, so as to transmit the signals to the signal conversion circuit matched with the signal type in the driving conversion module 202, perform correct signal conversion, and perform normal communication with an external control. As shown IN FIG. 2, IN one embodiment of the present invention, the signal output from the OBD communication interface 10 is input from IN1 to IN13 with a common input port, and the first column of the matrix switch has C13 1The selection channel is connected with an ADC detection pin of the ADC voltage detection identification module, signals after detection can be classified into high-voltage, low-voltage, analog differential signals and the like, and the switch matrix 204 is provided with A13 8Selecting, wherein different signal inputs are switched by a switch matrix and then input into corresponding signal conversion circuits; for example, the RS232 signal input is converted from the differential TX/RX signal input to the RS232 signal and then transmitted to the external controller 30 as the TTL level UART TX/RX.
The ADC voltage detection and identification module 2012 is connected to each of the vehicle OBD communication interfaces 10 through the switch matrix 204, so as to sample the signal of each of the vehicle OBD communication interfaces 10 through the switch matrix 204, and identify the signal type of each of the vehicle OBD communication interfaces 10 according to the sampled signal. The levels of various signals input and output by the automobile OBD communication interface 10 or the expression forms of the level signals are different. The embodiment of the utility model provides an in, carry out voltage sampling through ADC voltage detection identification module 2012 to each car OBD communication interface 10's signal to the voltage according to each car OBD communication interface 10's signal carries out the discernment of signal type, for example: pins IN1 through IN13 IN FIG. 2 are input/output pins of switch matrix 204 and are connected to vehicle OBD communication interface 10. The automobile OBD communication interface 10 outputs signals to the switch matrix 204 supporting wide input voltage (0-24V) through pins IN1 to IN 13; the ADC voltage detection and identification module 2012 detects and determines the signal type:
for example, for standard and high-speed CAN type signals, the average value of the input voltage is 2.5V as the reference voltage, and the ADC detects the reference voltage of 2.5 ± 0.5V.
For example, when the single-wire CAN type signal is in an active state, the average value 4V of the input voltage is a reference voltage, and the ADC detects the reference voltage 4+ 0.5V.
For example, an RS232 type signal is inputted as an ac differential value, and the ADC detects a reference of an effective value of a sine wave of the ac differential signal.
For example, the input signal of the J1850 PWM type signal is DC 5V, and the ADC detects the DC 5V + -A calibration signal.
For example, the J1850 VPW type signal input signal is DC 7V, and the ADC detects the DC 7V + -A calibration signal.
For example, a logic gate (negative logic) type signal is firstly detected by an ADC (when the ADC monitors voltage, the input pin of the OBD is known), if the detected voltage is 12/24V, the logic gate (negative logic) type signal communicates with an external controller through IIC bus communication to control a matrix, and if the detected voltage is 12/13 input pin, the negative logic module is started; if the pin 12 or the pin 13 is not negative logic, the external controller fails to communicate with the negative logic module, and the K/L line is switched to.
For example, the K/L line type signal is first detected by the ADC (when the ADC monitors the voltage, the input pin of the OBD is known), the determination voltage 12/24V is communicated with the external controller through the IIC bus to control the matrix, and the K/L line signal conversion circuit is turned on to the driving conversion module 202 if the determination pin is not the 12 or 13 input pin.
The switching control module 2013 is connected with the switch matrix 204, and the switching control module 2013 connects the channel matched with the signal type in the switch matrix 204 according to the signal type. After the ADC voltage detection and identification module 2012 identifies the signal type of each vehicle OBD communication interface 10, the switching control module 2013 may control the conduction of the corresponding channel on the switch matrix 204 according to the signal type, so as to connect to a signal conversion circuit matched with the signal type for signal conversion, and then implement normal communication between the vehicle controller and the external controller 30.
Referring to fig. 2, the switch matrix switching control module 201 further includes: the communication interface module 2011 and the communication interface module 2011 are respectively connected to the ADC voltage detection and identification module 2012, the switching control module 2013 and the external controller 30, and are configured to transmit the signal type identified by the ADC voltage detection and identification module 2012 to the external controller 30, and transmit the channel connection control information of the switch matrix 204 output by the external controller 30 to the switching control module. Is connected to the external controller 30 through the communication interface module 2011 so that the matrix drive device 20 can communicate with the external controller 30. The ADC voltage detection and identification module 2012 in the matrix driving apparatus 20 may transmit the signal types input and output by each of the vehicle OBD communication interfaces 10 to the external controller 30, and the external controller 30 sends data to the switching control module 2013, and the switching control module 2013 turns on the channel of the signal conversion circuit in the switch matrix 204, which is matched with the signal types.
Further, in the first embodiment of the present invention, the communication interface module 2011 includes a serial port and/or a general input/output interface. As shown in fig. 2, the serial port may be an IIC serial communication bus interface. It should be noted that in other embodiments, other types of communication interfaces may be used. The present invention is not limited to the IIC bus interface provided by the embodiment of the present invention.
Referring to fig. 2, the switch matrix switching control module 201 further includes: the memory module 2014 and the memory module 2014 are respectively connected to the switching control module 2013 and the communication interface module 2011, so as to store the switch matrix channel connection control information output by the external controller 30 through the communication interface module 2011. As shown in fig. 2, the memory module 2014 may be communicatively connected to the external controller 30 through the communication interface module 2011 to store switch matrix channel connection control information output by the external memory, so as to facilitate the switching control module 2013 to read the switch matrix channel connection control information on the memory module 2014 and correctly connect the signal conversion circuit matched with the signal type through the switch matrix 204, more specifically, the switch matrix switching control module 201 has a memory therein to store an address, a single signal output by the vehicle OBD communication interface 10 comes back, and is monitored by the ADC to determine the protocol (communication signal) type, the external controller 30 writes a corresponding register address to the memory, and the switch matrix 204 switches to a corresponding driving circuit to perform protocol (communication signal) conversion processing.
Referring to fig. 2, the switch matrix 204 includes a high-speed signal switch, and a signal end of the high-speed signal switch, which is far away from the vehicle OBD interface, is connected to the external controller 30, so as to transmit an ethernet signal input and output by the vehicle OBD communication interface to the external controller 30 under the control of the switching control module 2013. As shown in fig. 2, the high-speed signal switch on the switch matrix 204 is used for directly connecting with the external controller 30 to transmit the high-speed signals input and output by the automobile OBD communication interface 10 to the external controller 30, and the high-speed signals are subjected to signal conversion processing by external control. For example, the ethernet signal is generally a high-speed signal, and after such a signal is recognized, the signal is turned on by controlling the high-speed signal switch, and the high-speed signal switch transmits the ethernet signal to the external controller 30 through a predetermined interface, so that the ethernet signal is converted by the external controller 30 and then communicated with the vehicle controller through the ethernet. As shown in fig. 2, in an embodiment of the present invention, the high-speed signal switch integrates four-way switching, so that four-way ethernet high-speed signals can be switched, and when the ethernet high-speed signals DOIP (Diagnostic communication over Internet Protocol) are input to the switch matrix 204 through the OBD interface of the vehicle, the signals can be selectively switched to the external processor for processing through the high-speed signal switch.
Referring to fig. 2, the driving switching module 202 includes: any one or more of a CAN signal conversion circuit, an RS232 signal conversion circuit, an RS485 signal conversion circuit, a J1850 signal conversion circuit, a K/L line signal conversion circuit and a logic gate level conversion circuit. The utility model discloses an embodiment, drive conversion module 202 CAN include CAN signal converting circuit, RS232 signal converting circuit, RS485 signal converting circuit, J1850 signal converting circuit, K/L line signal converting circuit and logic gate level converting circuit to satisfy the conversion to the various types of signal of car OBD communication interface 10 output. As shown in fig. 2, one end of each signal conversion module in the driving conversion module 202 is connected to the vehicle OBD communication interface 10 of the switch matrix 204, so as to convert each type of signal that is output by the switch matrix 204 through channel selection and transmit the converted signal to the external controller 30, or convert a signal output by the external controller 30 and output the converted signal to the switch matrix 204, and transmit the converted signal to the corresponding vehicle OBD communication interface 10 through the switch matrix 204. As shown in fig. 2, the switch matrix 204 circuit supports a variety of wide voltage, large current analog and digital type signals such as TTL, CMOS, MAX485, and DOIP (ethernet signals); the external controller 30 communicates with the switch matrix 204 circuit through the IIC, the signal type is fed back to the external controller 30 through ADC monitoring and judgment after communication, and an IIC bus of the external controller 30 sends data to the switch matrix 204 to open a channel of the signal conversion circuit corresponding to the signal; the signal conversion circuit processes the corresponding signals: for example, CANH/L (2.5V) bus signals are input into the signal conversion circuit and then converted into CAN _ TX/RX (3.3V adaptive microprocessor signals). The J1850 PWM is a digital differential signal, which is converted to TX/RX (3.3V adaptive microprocessor signal) by a signal conversion module.
Referring to fig. 1 and 2, the matrix driving apparatus 20 further includes: the direct-current power conversion module 203 is used for being connected with the automobile OBD communication interface 10, so as to convert the power output by the automobile OBD communication interface 10 into a power supply for the switch matrix switching control module 201 and the driving conversion module 202. As shown in fig. 1 and fig. 2, the dc power conversion module 203 is connected to the vehicle OBD communication interface 10 to obtain power from the vehicle through the vehicle OBD communication interface 10, and after performing voltage conversion on the vehicle power, supplies power to each circuit module in the matrix driving apparatus 20, so that an external power supply circuit does not need to be added. The utility model discloses an embodiment, the external big electric capacity of DC power supply conversion module 203 accessible to store sufficient electric energy through big electric capacity, thereby can provide enough big electric current and come the power supply for each circuit module.
Referring to fig. 1 and 2, the dc power conversion module 203 is also connected to the external controller 30 to supply power to the external controller 30. As shown in fig. 1 and fig. 2, the voltage input of the dc power conversion module 203 is 12/24V, the voltage of the power is reduced, the dc power is converted into dc power, and the external large inductor not only supplies power to the chip, but also supports outputting 3.3V/1A power to supply power to the external controller 30. The dc power conversion module 203 is a dc voltage reduction circuit.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing detailed description, or equivalent replacements may be made for some of the technical features of the embodiments. All utilize the equivalent structure that the content of the utility model discloses a specification and attached drawing was done, direct or indirect application is in other relevant technical field, all is in the same way the utility model discloses within the patent protection scope.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.
Claims (8)
1. A matrix driving apparatus, comprising:
the switch matrix is used for being connected with the automobile OBD communication interface so as to receive signals output by the automobile OBD communication interface;
the switch matrix switching control module is connected with the switch matrix and is used for identifying the signal type of the signal output by the OBD communication interface of the automobile;
and the switch matrix switching control module is used for switching on a channel matched with the signal type in the switch matrix according to the signal type so as to communicate with an external controller after signal conversion is carried out through a signal conversion circuit matched with the signal type in the drive conversion module.
2. The matrix driving apparatus according to claim 1, wherein the switch matrix switching control module comprises:
the ADC voltage detection and identification module is connected with the switch matrix and is used for performing voltage sampling and signal type identification on the signal output by the automobile OBD communication interface;
and the switching control module is connected with the switch matrix and used for switching on a channel matched with the signal type in the switch matrix according to the signal type.
3. The matrix driving apparatus according to claim 2, wherein the switch matrix switching control module further comprises:
and the communication interface module is respectively connected with the ADC voltage detection identification module, the switching control module and the external controller, and is used for outputting the signal type identified by the ADC voltage detection identification module to the external controller and transmitting the switching matrix channel connection control information output by the external controller to the switching control module.
4. The matrix driving apparatus according to claim 3, wherein the switch matrix switching control module further comprises:
and the memory module is respectively connected with the switching control module and the communication interface module so as to store the switching matrix channel switching control information output by the external controller through the communication interface module.
5. The matrix driving device according to claim 2, wherein the switch matrix comprises a high-speed signal switch, and a signal end of the high-speed signal switch, which is far away from the vehicle OBD interface, is connected with the external controller, so as to transmit the Ethernet signal input and output by the vehicle OBD communication interface to the external controller under the control of the switch control module.
6. The matrix driving device according to any of claims 1 to 5, wherein the driving switching module comprises: any one or more of a CAN signal conversion circuit, an RS232 signal conversion circuit, an RS485 signal conversion circuit, a J1850 signal conversion circuit, a K/L line signal conversion circuit and a logic gate level conversion circuit.
7. The matrix drive apparatus according to any one of claims 1 to 5, further comprising: the direct current power supply conversion module is used for being connected with an automobile OBD communication interface so as to convert a power supply output by the automobile OBD communication interface into a power supply of the switch matrix switching control module and the driving conversion module.
8. The matrix driving apparatus according to claim 7, wherein the dc power conversion module is further connected to an external controller to supply power to the external controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921794854.6U CN210924279U (en) | 2019-10-22 | 2019-10-22 | Matrix driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921794854.6U CN210924279U (en) | 2019-10-22 | 2019-10-22 | Matrix driving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210924279U true CN210924279U (en) | 2020-07-03 |
Family
ID=71344135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921794854.6U Active CN210924279U (en) | 2019-10-22 | 2019-10-22 | Matrix driving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210924279U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113377698A (en) * | 2021-06-30 | 2021-09-10 | 四川湖山电器股份有限公司 | Novel RS-485 physical interface |
-
2019
- 2019-10-22 CN CN201921794854.6U patent/CN210924279U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113377698A (en) * | 2021-06-30 | 2021-09-10 | 四川湖山电器股份有限公司 | Novel RS-485 physical interface |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109507934B (en) | Cascade self-adaptive digital I/O and analog signal acquisition circuit | |
| CN110794808A (en) | Matrix driving device and multi-channel signal switching method thereof | |
| CN210924279U (en) | Matrix driving device | |
| US20200355386A1 (en) | Method and apparatus for identifying air-conditioning circuit, and air conditioner | |
| CN103580969A (en) | LIN network slave node control system and LIN network slave node control method | |
| CN112202571B (en) | POE power transmission device, POE switch and POE system | |
| US9998063B2 (en) | Master controller, servo actuator and servo controlling system | |
| CN100383704C (en) | Mobile communication terminal with general serial bus port and driving method | |
| CN108573674A (en) | LED display control chips | |
| CN113077677A (en) | Low-voltage electrician operation training examination system and examination device | |
| JPH1069339A (en) | Interface mechanism for connecting external equipment | |
| CN209298935U (en) | The charging control circuit structure of intelligent movable power supplies lease | |
| CN113900397A (en) | Device for realizing reverse connection self-adaptive switching of RS-485 signal line | |
| CN110580037B (en) | UART communication system and vehicle-mounted equipment | |
| CN212515784U (en) | RS-485 signal line polarity self-adaptation realization device based on double UARTs | |
| CN213240849U (en) | RS-485 signal polarity identification device | |
| CN214895656U (en) | Display chip test equipment | |
| CN212160411U (en) | Device for realizing reverse connection self-adaptive switching of RS-485 signal line | |
| CN219958106U (en) | Multi-path voltage circuit and system for detection controller and electric automobile | |
| CN113836063A (en) | RS-485 signal line polarity self-adaptation realization device based on double UARTs | |
| CN214101342U (en) | Automobile single bus key switch control device | |
| CN111355274B (en) | Vehicle-mounted power supply system and use method | |
| CN210191397U (en) | 25-path output vehicle body control module | |
| CN220188875U (en) | Multichannel data transmission circuit | |
| CN107436768A (en) | A kind of bus control method and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210607 Address after: 518000 1701-1708, 1801-1806, block D, building 1, Chuangzhi Yuncheng bid section 1, Liuxian Avenue, Xili community, Xili street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Yunjia Intelligent Technology Co.,Ltd. Address before: 518000 Yue Meilin Central Plaza, Kang Road, Futian District, Shenzhen City, Guangdong Province (North District), 2nd floor 204, 205, 206 Patentee before: SHENZHEN XTOOLTECH Co.,Ltd. |
|
| TR01 | Transfer of patent right |