Oval Corporation

Tatsumi Kameyama

Shunji Saitoh

Noriaki Nakayama

Yoshifumi Endo

A photoelectric sensing sensitivity adjusting device includes: an LED for emitting light by being supplied with energy (current or voltage); a regulator for LED driving for supplying the energy to the LED; a light receiving device for receiving the light emitted from the LED; a digital potentiometer for controlling increase or decrease of the energy to be supplied to the LED; a CPU for digitally controlling, according to a control program, the increase or decrease of the energy to be supplied to the LED; and a photodetection portion for detecting an optical signal, converting the optical signal to an electrical signal, and outputting the electrical signal.

Field equipment photoelectric sensing sensitivity adjustment

Provided is a measuring instrument for measuring an object to be measured, including: a CPU () including a plurality of internal timer counters and having a function of calculating a measured value of the object to be measured based on detection values of various sensors; a power supply circuit () for supplying power to the CPU (); a detector () for detecting a state of the object to be measured; a display unit () for displaying detection input data input from the various sensors and the state of the object to be measured, which is obtained through a calculation; a real-time clock IC (RTC) () for measuring an elapsed time; an EEPROM () for storing data input to the CPU (); and an FeRAM () for storing input values from the various sensors, and storing a calculation result obtained through a calculation performed by the CPU () based on the input values from the various sensors.

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Tokyo, Japan

Tatsumi Kameyama