Back to results
US 2003/0153987 A1Published application
Data acquisition device
AssigneeYamatake Corporation
InventorShiro Kano
Life of this patent
Estimating the term…
Abstract
A sensor 2 of a data collection system 2 is designed to make, in a predetermined environment, an operation of writing output data of a sensing circuit 24 into a non-volatile memory 22 as reference-value data, and, in a measurement environment, an operation of transmitting output data of the sensing circuit and reference-value data stored in the non-volatile memory, under the control of a memory control section 25, thereby selectively performing by itself the data-writing or data-transmitting operation without receiving instructions from a readout device.
Claims5
A data collection system comprising a readout device and a sensor, wherein
- said data collection system comprises radiation means for radiating electromagnetic energy,
- said readout device comprises collection means for collecting data from said sensor,
- said sensor comprises a sensing circuit including a sensing element, a coil for introducing the electromagnetic energy radiated from said radiation means, a power source section, connected with said coil, for generating internal electric power, a non-volatile memory, a memory control section for controlling data-writing into said non-volatile memory, and a transmitter section for transmitting an output of said sensing circuit and data stored in said non-volatile memory,
- said memory control section includes determination means for determining the number of times that the data-writing into said non-volatile memory has been made, and said memory control section restricts the number of times of the data-writing into said non-volatile memory to a predetermined number of times and renders said transmitter section operative, on the basis of a result of determination effected by said determination means.
1 more element
Dependencies are inferred from the claim text.