Kabushiki Kaisha Daini Seikosha

Kajima Corporation

Akira Yamazawa

Kazuya Watanabe

Takehiro Ishikawa

Yasuo Kusumoto

Takefumi Shimoyama

Yoshiyuki Ueno

One object is to provide a measuring device configured to evaluate the power generation characteristics of a response-delay type fuel cell automatically, precisely, and with excellent reproducibility with consideration of the response delay against power load fluctuations, and effectively acclimatize and develop microorganisms that are provided to generate power. A potentio-galvanostat is connected to a microbial fuel cell provided as an exemplary response-delay type fuel cell. Further, an automatic measuring device is connected to the potentio-galvanostat. The automatic measuring device has a program function and measures the internal resistance of the microbial fuel cell at set time. The internal resistance measurement is executed through the automatic measuring device that instructs the potentio-galvanostat to change a current value flowing to the microbial fuel cell and that repeatedly executes the process of measuring and recording a voltage value of the microbial fuel cell and the current value while changing a current control value in stages after the voltage value is stabilized.

Internal-resistance measuring device for response-delay type fuel cell

An electronic clinical thermometer has a first oscillator producing a first temperature oscillating output signal, a second oscillator producing a second temperature oscillating output signal whose frequency is dependent on a measured temperature body temperature, a first counter and a second counter and operative to provide a gate signal after a predetermined number count. A first memory temporarily stores the count content of the first counter in response to the gate signal, and a second memory stores the count content of the first memory. A digital magnitude comparator compares the count content of the first and second memories and produces a corresponding comparison signal indicative of whether the count content of the first memory is greater or not greater than the count content of the second memory. A flip-flop circuit responds to the comparison signal to produce a control signal for controlling a switching circuit in dependence on the comparison signal so as to selectively switch either the count content of the first memory or the count content of the second memory, whichever is greater, to a decoder ROM which decodes the count content and applies decoded digital signals to a driving circuit for driving a display. The display always shows the maximum value of the measured bodily temperature and thus provides error-free temperature measurements.

Electronic clinical thermometer

Growing community of inventors

Tokyo, Japan

Akira Yamazawa