Sensor system, control device, and sensor
First Claim
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1. A sensor system comprising:
- a plurality of sensors including ultrasonic sensors for distance measurement; and
a control device that is connected to the sensors through one signal line for serial communication,wherein the control device includes a detection-operation-instruction transmission section that transmits a detection operation instruction to the plurality of sensors through the signal line in order to instruct the plurality of sensors to perform a detection operation;
wherein the plurality of sensors each include a detection result transmission section that transmits a detection result of the sensor through the signal line;
wherein the control device further includes a result-transmission-instruction transmission section that transmits through the signal line a result transmission instruction to instruct transmission of the detection result; and
wherein the result-transmission-instruction transmission section transmits the result transmission instruction, during a new detection operation that is newly performed, to all the sensors engaged in a last detection operation, and the detection result transmission section of each of the sensors having received the result transmission instruction transmits the detection result of the last detection operation during the new detection operation.
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Abstract
In a sensor system, a monitoring ECU includes a result-transmission-instruction transmission section that transmits through a signal line a measurement result transmission instruction for transmitting distance data. The result-transmission-instruction transmission section transmits, during a new detection operation, the measurement result transmission instruction to at least one of the ultrasonic sensors engaged in a last detection operation. Upon receipt of the measurement result transmission instruction, a communication section of the ultrasonic sensors transmits a detection result during the new detection operation.
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Citations
7 Claims
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1. A sensor system comprising:
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a plurality of sensors including ultrasonic sensors for distance measurement; and a control device that is connected to the sensors through one signal line for serial communication, wherein the control device includes a detection-operation-instruction transmission section that transmits a detection operation instruction to the plurality of sensors through the signal line in order to instruct the plurality of sensors to perform a detection operation; wherein the plurality of sensors each include a detection result transmission section that transmits a detection result of the sensor through the signal line; wherein the control device further includes a result-transmission-instruction transmission section that transmits through the signal line a result transmission instruction to instruct transmission of the detection result; and wherein the result-transmission-instruction transmission section transmits the result transmission instruction, during a new detection operation that is newly performed, to all the sensors engaged in a last detection operation, and the detection result transmission section of each of the sensors having received the result transmission instruction transmits the detection result of the last detection operation during the new detection operation. - View Dependent Claims (3, 4, 5, 6, 7)
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2. A sensor system comprising:
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a sensor; and a control device that is connected to the sensor through one signal line-for serial communication, wherein the control device includes a detection-operation-instruction transmission section that transmits a detection operation instruction to the sensor through the signal line in order to instruct the sensor to perform a detection operation; wherein the sensor includes a detection result transmission section that transmits a detection result of the sensor through the signal line; wherein the control device further includes a result-transmission-instruction transmission section that transmits through the signal line a result transmission instruction to instruct transmission of the detection result; and wherein the result-transmission-instruction transmission section transmits the result transmission instruction, during a new detection operation, to the sensor engaged in a last detection operation, and the detection result transmission section of the sensor having received the result transmission instruction transmits a detection result of the last detection operation during the new detection operation.
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Specification