Abstract: The present invention provides an ultrasonic flow meter unit which can eliminate design factors associated with measuring performance, and improve general versatility and diversity. An ultrasonic flow meter unit of the present invention comprises a measurement fluid passage through which a fluid flows; a pair of ultrasonic transducers provided on the measurement fluid passage; and a measuring circuit board which measures a propagation time of an ultrasonic signal transmitted and received between the ultrasonic transducers, and calculates a fluid flow, lead pins bent with a predetermined angle are connected to terminals of the ultrasonic transducers, and the measuring circuit board is on-board mounted to the measurement fluid passage, and then the lead pins are connected to the measuring circuit board.

Abstract: Provided are a channel member and an ultrasonic fluid-measuring apparatus that can prevent the disturbance from occurring in the ultrasonic waves due to disturbance of a fluid. A channel member (15) includes a first side wall part (21) and a second side wall part (22) that are parallel to each other, a first ultrasonic wave input/output section (32) and a second ultrasonic wave input/output section (33) provided in the first side wall part, a reflecting surface (35) provided on an inner surface of the second side wall part, and an ultrasonic wave transmission membrane (38) that covers the first ultrasonic wave input/output section and the second ultrasonic wave input/output section and transmits ultrasonic waves (36, 37) therethrough.

Abstract: The present invention provides an ultrasonic flow meter unit which can eliminate design factors associated with measuring performance, and improve general versatility and diversity. An ultrasonic flow meter unit of the present invention comprises a measurement fluid passage through which a fluid flows; a pair of ultrasonic transducers provided on the measurement fluid passage; and a measuring circuit board which measures a propagation time of an ultrasonic signal transmitted and received between the ultrasonic transducers, and calculates a fluid flow, lead pins bent with a predetermined angle are connected to terminals of the ultrasonic transducers, and the measuring circuit board is on-board mounted to the measurement fluid passage, and then the lead pins are connected to the measuring circuit board.

Abstract: In a time measuring system having a high-speed counter section (1) for counting up a counter value in response to a clock signal between supplies of a measurement start signal and a measurement stop signal to produce a counter output signal representative of the counter value, a signal producing section (4) is supplied with a measurement able/disable switching signal and with an original stop signal and produces the measurement start signal and the measurement stop signal. An adding section (2) executes an adding operation as regards the counter value by the use of the clock signal and the counter output signal to produce a sum total of the counter value. Responsive to the sum total, a data producing section (3) produces a resolution datum by the use of the counter output signal. In order to produce the measurement start signal and the measurement stop signal, the signal producing section uses the resolution datum, the sum total, and the clock signal.

Abstract: A time interval measurement system, by which measurement of individual time interval with remarkably improved measurement accuracy is made possible with smaller circuit scale, comprises a high speed counter section, an adder section, and a control section. The high speed counter section includes a m-bit counter unit having a plurality of m-bit counters for obtaining an integer part of the time interval between a START signal and a STOP signal, a first 1-bit counter unit having a plurality of first 1-bit counters for obtaining an decimal part of the time interval, and a high frequency pulse generator circuit.

Abstract: In order to measure an individual time interval with accuracy beyond frequency limit of semiconductors, a time measurement system of the invention generates a series of delayed pulses, each of which has the same pulse width with the time interval to be measured and delayed by a unit delay time shorter than a cycle time of a system clock from its preceding delayed pulse. A series of discriminate number measurement pulses are also generated from the series of delayed pulses, each of which rises at a common time and falls at each corresponding delay pulse. From number of a longest sequence of the same pulse number of the system clock counted in the discriminate number measurement pulses, the unit delay time is measured. From average value of pulse numbers of the system clock counted in each of the delayed pulses, the time interval to be measured is calculated with accuracy of the unit delay time.

Abstract: A flow amount measuring and controlling apparatus which has a built-in gas meter can compute and control the flow amount used for each gas appliance by the estimation of the gas appliance generated in the flow variation from the change of the monetary flow amount passing through the gas meter, whereby, since the condition of the gas appliance can be correctly determined, the abnormal operation of the gas appliance can be detected so as to shut off the gas.

Abstract: The automatic temperature control device for an electric appliance such as an electric blanket comprises a heater element, a sensor made of a thermosensitive material having an impedance, which changes as the temperature varies, for detecting the temperature of the heater element, switching means for regulating the supply of electric power to the heater element, and a plurality of electric circuits for driving the switching means in response to the output signal from the sensor. The plurality of electric circuits function to prevent the sensor from being polarized and to detect a temperature signal by applying thereto an alternating current, to detect a failure occurring in the electric circuits in synchronism with zero-crossing pulses, and to detect a failure occurring in the switching means, thereby assuring a safe operation of the automatic temperature control device against the occurrence of any failure.

Abstract: A control apparatus for an air conditioner, which selects the operation of the air conditioner between a first mode of warming a room and a second mode of cooling a room, the first mode having a defrosting pause period for defrosting the outdoor heat exchanger, the second mode having a restart-preventing pause period for preventing restarting of a compressor motor, and the abovementioned selection between two modes is made by controlling a logic circuit 16 constituted as a semiconductor IC by applying specified controlling signal thereto.