System for controlling vehicle sensor and method of controlling same
A system for controlling a vehicle sensor, the system including a plurality of sensors provided in a vehicle, a switch module including a plurality of switches connected to the plurality of sensors, respectively, the plurality of switches being connected to the switch module through an integral line; a controller configured to control operation of each of the plurality of switches, the controller being connected to the switch module through the integral line and thus performing communication with the plurality of sensors, and assigning an ID to each of the plurality of sensors in a corresponding manner by selectively connecting each of the plurality of switches thereto.
1. A system for controlling a vehicle sensor, the system comprising:
a plurality of sensors provided in a vehicle;
a switch module including a plurality of switches connected to the plurality of sensors, and an integral line connecting the plurality of switches;
a controller being connected to the integral line of a switch module to communicate with the plurality of sensors and configured to control operation of the plurality of switches, the controller assigning an ID to each of the plurality of sensors by selectively connecting each of the plurality of switches thereto; and
a transmission and reception device connecting the switch module and the controller to each other, receiving a detection signal transmitted by each of the plurality of sensors, and transmitting the received detection signal to the controller,
wherein the controller comprises a communication channel connected to the transmission and reception device.
2. The system of claim 1 , wherein when starting the vehicle, the controller turns on a switch connected to each of the sensors, assigns the ID to the sensor, and turns off the switch of the sensor to which the ID is assigned to sequentially assign IDs to all the other sensors, respectively.
3. The system of claim 2 , wherein when the IDs are assigned to the plurality of sensors, the controller turns on the plurality of switches, transmits a diagnostic signal to each of the plurality of sensors, and verifies the IDs assigned to the plurality of sensors.
4. The system of claim 2 , wherein the controller operates only the switch connected to the sensor required to operate.
5. The system of claim 1 , wherein the plurality of sensors mounted in the vehicle are grouped into a plurality of groups, and the sensors in a same group are connected to one switch module and then connected to the controller.
6. The system of claim 1 , wherein each of the sensors are provided with three pins that are a first pin, a second pin, and a third pin, and
wherein the first pin serves as a communication pin connected to each of the switches, the second pin serves as a power pin, and the third pin serves as a grounding pin, and
wherein the respective power pins of the plurality of sensors are connected to each other and then are connected to the controller, and the respective grounding pins of the plurality of sensors are connected to each other for grounding.
7. The system of claim 1 , wherein the switch module includes a physical switch or a multiplexer/demultiplexer (MUX/DeMUX).
8. A method of controlling the system of claim 1 , the method comprising:
controlling operation of each of the switches; and
assigning an ID to each of the sensors by selectively connecting each of the switches thereto.
9. The method of claim 8 , further comprising:
comparing a number of IDs respectively assigned to the sensors with a number of the sensors after the assigning of the ID to each of the sensors,
wherein when the number of the IDs respectively assigned to the sensors is smaller than the number of the sensors, operation of the switch is performed.
10. The system of claim 8 , further comprising: after the assigning of the ID to each of the sensors, operating all the switches; and
verifying the assigned IDs by transmitting a diagnostic signal to each of the sensors.