CN113687644A - Crossing gate state acquisition device - Google Patents
Crossing gate state acquisition device Download PDFInfo
- Publication number
- CN113687644A CN113687644A CN202111085065.7A CN202111085065A CN113687644A CN 113687644 A CN113687644 A CN 113687644A CN 202111085065 A CN202111085065 A CN 202111085065A CN 113687644 A CN113687644 A CN 113687644A
- Authority
- CN
- China
- Prior art keywords
- acquisition
- gate
- state
- signal
- module
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
Abstract
The invention discloses a crossing gate state acquisition device. Which comprises the following steps: the system comprises a communication conversion module, a processing module and an acquisition module; the processing module comprises an input unit, a processing unit and an output unit; the acquisition module is used for acquiring a state signal of the gate controller; the input unit is used for converting the state signal into an acquisition signal within the voltage threshold range of the processing unit; the processing unit is used for generating a logic signal according to the mapping relation between the acquired signal and the working state of the gate; the output unit is used for providing an output interface of the logic signal; the communication conversion module is used for accessing the corresponding output interface according to the communication type of the intelligent road side equipment of the Internet of vehicles. The technical scheme provided by the invention realizes the state acquisition by adapting to the gates of different models, improves the universality of the acquisition device, reduces the production cost of products and improves the acquisition efficiency.
Description
Technical Field
The embodiment of the invention relates to the intelligent networking automobile technology, in particular to a crossing gate state acquisition device.
Background
With the development of intelligent traffic, the range of equipment deployment of V2X is wider and wider, and intersection gates inevitably occur in the application scene of intelligent networked automobiles. The crossing gate can control the passing of vehicles and personnel by adopting a gate mode to ensure the safety of the passing vehicles and personnel on the road. Among them, V2X is a technology for exchanging information from vehicle to outside. The intelligent networking application of the automobile is realized by integrating a global positioning system navigation technology, an automobile-to-automobile communication technology, a wireless communication technology and a remote induction technology through the Internet of vehicles.
Road environment information is provided through the intersection gate machine, and information exchange between the vehicle and the outside is achieved. The intersection gate state is collected in the prior art, technical schemes such as image recognition and manual input are generally adopted, the problems of high collection equipment price and low efficiency exist, and due to different types of gate models, collected signals are not uniform, so that the universality of a collection device is poor.
Disclosure of Invention
The invention provides a crossing gate state acquisition device, which is adaptive to gates of different models for state acquisition, improves the universality of the acquisition device, reduces the production cost of products and improves the acquisition efficiency.
The embodiment of the invention provides a crossing gate state acquisition device, which comprises: the system comprises a communication conversion module, a processing module and an acquisition module;
the processing module comprises an input unit, a processing unit and an output unit; the input unit is connected with the acquisition module; the acquisition module is used for acquiring a state signal of the gate controller; the input unit is used for converting the state signal into an acquisition signal within the voltage threshold range of the processing unit;
the input unit is connected with the processing unit; the processing unit is connected with the output unit; the processing unit is used for generating a logic signal according to the mapping relation between the acquired signal and the working state of the gate; the output unit is used for providing an output interface of the logic signal; the communication conversion module is connected with the output interface and used for converting the logic signal into a communication signal according to the communication type of the intelligent road side equipment of the Internet of vehicles.
Optionally, the input unit includes a regulation subunit; the adjusting subunit is connected with the acquisition module; the adjusting subunit is configured to adjust a voltage of the state signal, so that the voltage of the state signal is within a voltage threshold range of the processing unit.
Optionally, the adjusting subunit includes an adjustable current-limiting resistor; the adjustable current-limiting resistor is connected with the acquisition module; the adjustable current limiting resistor is used for adjusting the current limiting resistor according to the voltage range of the state signal and the voltage threshold range of the processing unit.
Optionally, the acquisition module includes a level acquisition harness, and the input unit includes a harness socket; the adjusting subunit is connected with the wiring harness clamping seat; the wire harness clamping seat is connected with the gate controller through the level acquisition wire harness; the wire harness clamping seat is used for fixing and providing an output connection interface of the acquisition module, and the level acquisition wire harness is used for acquiring a state signal output by the gate controller.
Optionally, the level acquisition harness includes at least one pair of interfaces, and each pair of interfaces includes an acquisition interface and an output interface; the output interface is connected with the wiring harness clamping seat; the acquisition interface is connected with the output interface of the gate controller.
Optionally, the input unit further includes an isolation subunit; the isolation subunit is connected in series between the processing unit and the adjusting subunit, and the isolation subunit is used for isolating signals between the gate and the intelligent road side equipment of the Internet of vehicles.
Optionally, the isolation sub-unit includes a photo coupler.
Optionally, the output unit includes a level conversion card socket, and the level conversion card socket includes at least two types of serial interfaces; the level conversion card seat is connected with the communication conversion module; the level conversion card seat is used for providing an output interface of the logic signal.
Optionally, the communication conversion module includes at least two communication conversion units; the communication conversion unit is used for being connected with the level conversion card seat in a matching mode according to the communication type of the intelligent road side equipment of the Internet of vehicles.
Optionally, the communication conversion unit includes an RS232 communication module and an RS485 communication module
According to the technical scheme provided by the invention, the state signals of the gate controller are acquired through the acquisition module, the state signals are adjusted to be acquired signals within the voltage threshold range of the processing unit through the input unit, and the state signals are adjusted by the input unit to meet the acquisition requirements of the processing unit, so that the state signals output by different types of gates can be adapted, and the universality of the acquisition device for acquiring the states of different types of gates is improved. The processing unit can determine the current state of the gate according to the mapping relation between the collected signals and the working state of the gate, the state signals of the gate controller are directly collected to judge the state of the gate, the collection efficiency is improved, the hardware structure of the collection device is simple, and the production cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a crossing gate state acquisition device according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of another intersection gate state acquisition device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious 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.
With the development of "smart traffic", the range of device deployment of V2X is originally wider, but the state output of the device of V2X is not a uniform standard, and therefore the state signals sent by the gate controllers of the corresponding intersection gate devices are not uniform. Therefore, in the gate state acquisition process, the acquisition device needs to be selected according to the type of the gate, so that the equipment cost in the state acquisition process is increased, and the acquisition efficiency is influenced.
In view of the above, fig. 1 is a schematic structural diagram of an intersection gate state acquisition device according to an embodiment of the present invention, and referring to fig. 1, the device includes: a communication conversion module 110, a processing module 120 and an acquisition module 130.
The processing module 120 includes an input unit 123, a processing unit 122, and an output unit 121. The input unit 123 is connected to the acquisition module 130. The collecting module 130 is used for collecting the state signal of the gate controller. The input unit 123 is configured to convert the state signal into an acquisition signal within a voltage threshold range of the processing unit 122.
The input unit 123 is connected to the processing unit 122, the processing unit 122 is connected to the output unit 121, and the processing unit 122 is configured to generate a logic signal according to a mapping relationship between the acquired signal and a working state of the gate. The output unit 121 is an output interface for providing logic signals. The communication conversion module 110 is connected with the output interface, and the communication conversion module 110 is used for converting the logic signal into a communication signal according to the communication type of the intelligent road side equipment in the internet of vehicles.
Specifically, the collecting module 130 is connected to the gate controller, the gate controller can output a status signal according to the current status of the gate, and the collecting module 130 collects the status signal output by the gate controller and inputs the status signal to the processing unit 122 through the output unit 121. Illustratively, the state of the gate includes state information such as open, closed, and fault. After receiving the state signal, the input unit 123 adjusts the state signal to the acquisition voltage of the processing unit 122 to generate an acquisition signal, wherein the acquisition voltage of the processing unit 122 needs to be within the voltage threshold range of the processing unit 122, and different state signals are output by the gate controller due to different gate types, so that the state signal is adjusted by the input unit 123 to conform to the voltage threshold range of the processing unit 122, and thus, the gate state acquisition device can adapt to state acquisition of multiple gate types, and the universality of the acquisition process is improved. And the processing unit 122 can be ensured to input the acquired signal correctly, and the processing unit 122 is prevented from being damaged due to a large input voltage signal of the processing unit 122. Illustratively, the state signal output by the gate controller is a level signal. Because the gate models are different and the voltage values of the level signals are also different, the voltage reduction is adjusted through the input unit 123, and the voltage values of the level signals are adjusted to accord with the acquisition voltage of the processing unit 122, so that the voltage acquisition range of the processing unit 122 is met.
The processing unit 122 can determine the gate state at this time by collecting the mapping relationship between the signals and the gate state. The processing unit 122 may be a single chip microcomputer, which reduces the cost and improves the assembly flexibility. The mapping relation between the collected signals and the state of the gate can be established through the state signals of the gate provided by a gate manufacturer, so that the current state of the gate can be correspondingly obtained through the collected signals according to the mapping relation. For example, the processing unit 122 stores various types of gate mapping relationships, and after the processing unit 122 determines the type of the gate, when receiving the acquisition signal, the processing unit invokes the corresponding mapping relationship, and obtains the state of the gate at that time according to the acquisition signal. The mapping relation between the collected signals and the state of the gate machine can be established by self-learning in the process of testing the gate machine. The processing unit 122 determines the state of the gate, generates a logic signal, converts the communication type by the communication conversion module 110 through the output unit 121, and sends the logic signal to the intelligent road side equipment of the internet of vehicles. The intelligent road side equipment of the internet of vehicles controls automatic vehicles with cooperative vehicle paths according to the state of the gate of the intersection.
According to the technical scheme provided by the invention, the state signals of the gate controller are acquired through the acquisition module, the state signals are adjusted to be acquired signals within the voltage threshold range of the processing unit through the input unit, and the state signals are adjusted by the input unit to meet the acquisition requirements of the processing unit, so that the state signals output by different types of gates can be adapted, and the universality of the acquisition device for acquiring the states of different types of gates is improved. The processing unit can determine the current state of the gate according to the mapping relation between the collected signals and the working state of the gate, the state signals of the gate controller are directly collected to judge the state of the gate, the collection efficiency is improved, the hardware structure of the collection device is simple, and the production cost is reduced.
Optionally, the input unit includes a regulating subunit, the regulating subunit is connected to the collecting module, and the regulating subunit is configured to regulate a voltage of the state signal, so that the voltage of the state signal is within a voltage threshold range of the processing unit.
Specifically, the adjusting subunit receives the state signal, and adjusts the state signal according to the voltage threshold of the processing unit, so that the output signal of the adjusting subunit can meet the acquisition requirement of the processing unit. Illustratively, the adjusting subunit can further comprise a small-sized processor and a voltage conversion unit, the processor is used for controlling an automatic adjusting mode, when the adjusting subunit receives the state signal, the processor controls the voltage conversion unit to adjust the voltage of the state signal according to the voltage threshold range of the processing unit, and when the voltage of the state signal conforms to the voltage threshold range of the processing unit, the adjusting subunit outputs the acquisition signal to the processing unit. The adjusting subunit can also adopt a manual adjusting mode, the adjusting subunit provides a multi-gear adjusting resistor, when the adjusting subunit receives the state signal, an engineer adjusts the resistor combination through the gears according to the voltage threshold range of the processing unit, the voltage of the adjusting state signal is in the voltage threshold range of the processing unit, the hardware structure can be further reduced, and the product cost can be further reduced.
Based on the above embodiment, fig. 2 is a schematic structural diagram of another intersection gate state acquisition device according to an embodiment of the present invention, and referring to fig. 2, the adjusting subunit includes an adjustable current-limiting resistor 210 and an adjustable current-limiting resistor 210. Adjustable current limiting resistor 210 is connected to acquisition module 130. The adjustable current limiting resistor 210 is used to adjust the current limiting resistor according to the voltage range of the status signal and the voltage threshold range of the processing unit.
Specifically, the adjusting subunit may adopt an adjustable current-limiting resistor 210, the adjustable current-limiting resistor 210 is connected in series between the processing unit 122 and the acquisition module 130, different gate controllers output different level signals, that is, state signals, and the voltage of the level signals is adjusted through the adjustable current-limiting resistor 210. The adjustable current-limiting resistor 210 is provided with a plurality of current-limiting resistors, and can be adjusted in a combined manner according to the voltages of different level signals, so that the adjustment range is enlarged. The surface of the gate state acquisition device is provided with the resistance adjusting shifting piece, and the resistance can be adjusted by adjusting the shifting piece. For example, the voltage signal of the first gate controller outputting different level signals is 10V, the target voltage is 5V, and the current limiting resistor can be adjusted to a first resistance value to reduce the input signal to 5V by current limiting. The second gate controller outputs a voltage signal of a different level signal of 12V and a target voltage of 5V, and the current limiting resistor can be adjusted to a second resistance value to reduce the voltage of the input signal to 5V through current limiting. The process of adjusting and generating the acquisition signal according to the state signal only reduces the voltage of the level signal of the acquisition signal, but does not influence the time sequence of the logic level, thereby being convenient and fast to adapt to the state acquisition of different intersection gate equipment.
With continued reference to fig. 2, optionally, the collection module 130 includes a level collection harness 310 and the input unit 123 includes a harness socket 220. The adjustment subunit is connected to the harness holder 220. The harness socket 220 is connected to the gate controller via a level acquisition harness 310. The harness socket 220 is used for fixing and providing an output connection interface of the acquisition module 130. The level acquisition harness 310 is used for acquiring status signals output by the gate controller.
Specifically, the harness socket 220 may be provided with one interface or a plurality of interfaces according to the output port of the acquisition module 130. The interface type and the number of interfaces may be selected and matched according to the output ports of the level acquisition harness 310. The adaptability to different gate types is further improved by providing multiple interface types.
The level acquisition harness 310 includes at least one pair of interfaces, each pair of interfaces including an acquisition interface and an output interface. The output interface is connected to the input unit 123. The acquisition interface is used for connecting an output interface of the gate controller.
Specifically, the level acquisition harness 310 is used for acquiring a gate state signal of a gate controller, wherein the gate state signal is generally a level signal. The output interface of the level acquisition wiring harness 310 is integrated at the output end, the output end is correspondingly connected with the wiring harness clamping seat, the input interface of the level acquisition wiring harness 310 is integrated at the input end, and the acquisition interface of a pair of interfaces only acquires one level signal and outputs the level signal through the output interface of the pair of interfaces. The gate state can be collected by using a minimum pair of interfaces, and the number of collecting interfaces can be increased as required, wherein the maximum number of interfaces is equal to the number of general input/output interfaces of the processing unit 122.
Optionally, the input unit further includes an isolation subunit. And an isolation subunit is connected between the processing unit and the adjusting subunit in series and is used for isolating signals between the gate and the intelligent road side equipment of the Internet of vehicles.
Specifically, the isolation subunit is connected in series between the regulation subunit and the processing unit. The isolation subunit makes the state signal of the gate and the signal of the intelligent road side equipment of the internet of vehicles crosstalk with each other. And the isolation subunit can isolate the state signal, so as to prevent the state signal with high voltage from entering the processing unit, and can also prevent the state signal which does not conform to the voltage from entering the processing unit when the voltage is not adjusted to the voltage threshold range of the processing unit in the adjusting and adjusting process of the adjusting subunit.
With continued reference to fig. 2, optionally, the isolator sub-unit includes an opto-coupler 230. Specifically, establish ties optoelectronic coupler 230 between adjustable current-limiting resistor 210 and processing unit 122, adjustable current-limiting resistor 210 confirms the current-limiting resistance value according to optoelectronic coupler's opening current and processing unit 122's voltage threshold range, gathers the signal through optoelectronic coupler output, can effectually carry out signal isolation to floodgate machine side and car networking intelligence road side, guarantees that both sides equipment signal is independent, improves the state and gathers the reliability.
With continued reference to fig. 2, optionally, the output unit 121 includes a level conversion card socket 310, and the level conversion card socket 310 includes at least two types of serial interfaces. The level conversion socket 310 is connected to the communication conversion module 110. The level conversion socket 310 is used for providing an output interface of logic signals.
Specifically, an input end of the level conversion card socket 310 is connected to the processing unit 122, and an output end of the level conversion card socket 310 is connected to the communication conversion module 110. The communication type of intelligent roadside device of car networking does not have unified communication rule at present, therefore level conversion cassette provides multiple communication serial ports interface, and the logic signal of processing unit 122 output passes through level conversion cassette and exports to communication conversion module 110 to can satisfy multiple communication type's output, improve the suitability of intelligent roadside device of car networking.
Based on the above embodiment, optionally, the communication conversion module includes at least two communication conversion units. The communication conversion unit is used for being connected with the level conversion card seat in a matching mode according to the communication type of the intelligent road side equipment of the Internet of vehicles.
Specifically, the communication conversion unit can be used in a dismounting mode, namely the communication conversion unit is selected according to the communication type to be correspondingly connected, and the logic signal is converted into the communication signal to be sent to the intelligent road side equipment of the internet of vehicles. The problem of different brand car networking intelligence roadside device serial ports level difference is solved.
Optionally, the communication conversion unit includes an RS232 communication unit and an RS485 communication unit. Specifically, a suitable communication conversion unit is selected according to the level of the serial port of different intelligent road side equipment of the internet of vehicles, for example, the commonly used communication conversion units are RS232, RS485 and the like.
Finally, it should be noted that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some technical features may still be made. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An intersection gate state acquisition device, comprising: the system comprises a communication conversion module, a processing module and an acquisition module;
the processing module comprises an input unit, a processing unit and an output unit; the input unit is connected with the acquisition module; the acquisition module is used for acquiring a state signal of the gate controller; the input unit is used for converting the state signal into an acquisition signal within the voltage threshold range of the processing unit;
the input unit is connected with the processing unit; the processing unit is connected with the output unit; the processing unit is used for generating a logic signal according to the mapping relation between the acquired signal and the working state of the gate; the output unit is used for providing an output interface of the logic signal; the communication conversion module is connected with the output interface and used for converting the logic signal into a communication signal according to the communication type of the intelligent road side equipment of the Internet of vehicles.
2. The intersection gate state acquisition device of claim 1, wherein the input unit comprises a conditioning subunit; the adjusting subunit is connected with the acquisition module; the adjusting subunit is configured to adjust a voltage of the state signal, so that the voltage of the state signal is within a voltage threshold range of the processing unit.
3. The intersection gate state acquisition device of claim 2, wherein the regulation subunit comprises an adjustable current limiting resistor; the adjustable current-limiting resistor is connected with the acquisition module; the adjustable current limiting resistor is used for adjusting the current limiting resistor according to the voltage range of the state signal and the voltage threshold range of the processing unit.
4. The intersection gate state acquisition device of claim 2, wherein the acquisition module comprises a level acquisition harness, and the input unit comprises a harness holder; the adjusting subunit is connected with the wiring harness clamping seat; the wire harness clamping seat is connected with the gate controller through the level acquisition wire harness; the wire harness clamping seat is used for fixing and providing an output connection interface of the acquisition module, and the level acquisition wire harness is used for acquiring a state signal output by the gate controller.
5. The intersection gate state acquisition device of claim 4, wherein the level acquisition harness comprises at least one pair of interfaces, each pair of interfaces comprising an acquisition interface and an output interface; the output interface is connected with the wiring harness clamping seat; the acquisition interface is connected with the output interface of the gate controller.
6. The intersection gate state acquisition device of claim 2, wherein the input unit further comprises an isolation subunit; the isolation subunit is connected in series between the processing unit and the adjusting subunit, and the isolation subunit is used for isolating signals between the gate and the intelligent road side equipment of the Internet of vehicles.
7. The intersection gate state acquisition device of claim 6, wherein the isolator sub-unit comprises an opto-coupler.
8. The intersection gate state acquisition device of claim 1, wherein the output unit comprises a level conversion card holder, the level conversion card holder comprising at least two types of serial interfaces; the level conversion card seat is connected with the communication conversion module; the level conversion card seat is used for providing an output interface of the logic signal.
9. The intersection gate state acquisition device of claim 8, wherein the communication conversion module comprises at least two of the communication conversion units; the communication conversion unit is used for being connected with the level conversion card seat in a matching mode according to the communication type of the intelligent road side equipment of the Internet of vehicles.
10. The intersection gate state acquisition device of claim 9, wherein the communication conversion unit comprises an RS232 communication module and an RS485 communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111085065.7A CN113687644A (en) | 2021-09-16 | 2021-09-16 | Crossing gate state acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111085065.7A CN113687644A (en) | 2021-09-16 | 2021-09-16 | Crossing gate state acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113687644A true CN113687644A (en) | 2021-11-23 |
Family
ID=78586483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111085065.7A Pending CN113687644A (en) | 2021-09-16 | 2021-09-16 | Crossing gate state acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113687644A (en) |
-
2021
- 2021-09-16 CN CN202111085065.7A patent/CN113687644A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2004253143B2 (en) | A method and system for bidirectional data and power transmission | |
| CN201117091Y (en) | Automobile light state feedback device based on CAN bus | |
| CN102540939A (en) | Control device with an input equipped for processing signals of various sensor types | |
| KR20000004924A (en) | Process for determining potential shifts between electronic modules in an wire bus network | |
| CN100485649C (en) | Communication system with switchable connection | |
| CN101240767B (en) | Information integration based passenger car starting-up control system | |
| CN103620572A (en) | Broadcast serial bus termination | |
| US11516043B2 (en) | Monolithic high-voltage transceiver connected to two different supply voltage domains | |
| US11548456B2 (en) | Can circuit structure and vehicle diagnostic device including the same | |
| CN109862128A (en) | For passing through the method and bus node of bus node feed-in addressed current | |
| US6404326B1 (en) | Redundant power communications circuit | |
| CN1361949A (en) | Electrical insulation device with optocoupler for bidirectional connecting lines | |
| CN114165132A (en) | Motor module, management module, and in-vehicle device control system | |
| CN215867590U (en) | Crossing gate state acquisition device | |
| CN101470151B (en) | CAN bus isolation circuit | |
| US20070118233A1 (en) | Automation device | |
| CN106685782B (en) | Profibus active terminal resistance device with DP bus data acquisition function | |
| CN113687644A (en) | Crossing gate state acquisition device | |
| US5388091A (en) | Communications system for communications between an electronic control apparatus and a test apparatus | |
| KR20100057840A (en) | Device for fitting a multimedia system in a vehicle | |
| US20070116040A1 (en) | Automation device | |
| JPH08275253A (en) | Device for exchanging serial data between two stations | |
| CN106303301A (en) | Video control circuit based on vehicle data bus | |
| CN210626952U (en) | Multifunctional signal acquisition device | |
| CN114365457A (en) | Vehicle interior communication system and vehicle including the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |