Device for detecting time when temperature lies in specific region

Abstract

Abstract PURPOSE:To monitor the temperature including time element readily and adequately, by providing a means which detects a temperature when it lies in a specific region, a means which computes the time based on the detected and counted signal value and the detected time interval, and a display means. CONSTITUTION:The reference values on the upper and lower limit sides are preset by variable resistors 46, 46' and the like. A pulse signal is generated by a pulse generating circuit 48 or 48' when a temperature exceeds the upper limit side reference value or becomes lower than the lower limit side reference value. Said detecting operation is performed at every specified time interval, by controlling the current conduction by a timer 7. A time computing part 8 has pulse counters 81 and 81' and operating circuits 82 and 82'. The pulses from the pulse generating circuits 48 and 48' are computed by the pulse counters 81 and 81'. The time corresponding to the detection time interval is computed by the operating circuits 82 and 82' for only the number of pulse generation.

Inventors

• 👤 Yoshiaki Masuda
• 👤 吉昭 増田

Bibliographic Details