AREA SENSOR AND EXTERNAL STORAGE DEVICE
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Abstract
An area sensor includes: a sensor unit that emits measurement light with which a monitoring area is scanned, and detects reflected light of the measurement light; and a system controller that controls the sensor unit to output sensor information to an external device, the sensor information including object information in the monitoring area obtained based on an output signal from the sensor unit, the system controller including: a memory interface to which a portable external storage device is connectable, a sensor controller that controls the sensor unit, and a memory controller that accesses the external storage device; and a start processing unit which operates the memory controller in priority to the system controller, when the external storage device is connected to the memory interface.
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Citations
21 Claims
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1-9. -9. (canceled)
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10. An area sensor comprising:
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a sensor unit that emits measurement light with which a monitoring area is scanned, and detects reflected light of the measurement light; a memory interface to which a portable external storage device is connectable; and a system controller including a sensor control unit and a memory control unit, wherein the sensor controller is configured to control the sensor unit to output sensor information to an external device, the sensor information including object information in the monitoring area obtained based on an output signal from the sensor unit, and the memory controller is configured to access the external storage device and execute read processing and/or write processing based on a command stored in the external storage device. - View Dependent Claims (11, 12, 13, 14, 15, 20, 21)
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16. An area sensor comprising:
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a sensor unit that emits measurement light with which a monitoring area is scanned, and detects reflected light of the measurement light; a memory interface to which a portable external storage device is connectable; and a system controller including a sensor control unit and a memory control unit, wherein the sensor controller is configured to control the sensor unit to output sensor information to an external device, the sensor information including object information in the monitoring area obtained based on an output signal from the sensor unit, and the memory controller is configured to access the external storage device to execute authentication processing to compare an identification code stored in the external storage device to an identification code uniquely set to the area sensor, and to execute read processing and/or write processing based on a command which is associated with the identification code and stored in the external storage device, when the identification codes match in the authentication processing, the system controller includes a storage unit that is segmented into a program storage area storing therein an operation program of the area sensor and a data storage area storing therein information on the monitoring area, and a CPU that executes the program stored in the program storage area of the storage unit, the memory controller is implemented with the CPU, and the CPU executes an access program, for accessing the external storage device, in the program stored in the program storage area, and the memory controller is configured to execute read processing or write processing based on the command stored in the external storage device, the read processing including reading an update program from the external storage device and writing the update program to the program storage area or including reading control information from the external storage device and writing the control information to the data storage area, the write processing including reading, by the sensor controller, sensor information stored in the data storage area or reading control information stored in the data storage area and writing the sensor information or the control information to the external storage device. - View Dependent Claims (17, 18, 19)
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Specification