JPS6073799A - Connection of multiple detectors by autonomous signal transmitting system - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for connecting multiple detectors using an autonomous signal transmission method for transmitting signals from high-density distribution detectors, etc. with a small number of wiring lines, and it is an object of the present invention to provide such a connection method. In this system, a large number of detectors each equipped with a conversion section that converts the measured quantity into an electrical quantity signal and an integrated transmission section that transmits the signal are connected in parallel by a signal line, and a control line By connecting them in series and inputting a control signal to the transmission section of the detector through the control line, a gate signal is generated in the transmission section, and a gate for outputting the measurement data from the conversion section is generated. open, transmit the measurement data through the signal line, generate a control signal to be sent to the next stage detector through the control line, connect it in series with the control line, and the power line that connects them in parallel. By simply connecting the detectors, the amount of wiring can be greatly reduced, and by integrating the transmission section in each detector, the configuration for time-division transmission can be made extremely simple and compact.

The method of the present invention will be explained in detail below with reference to the drawings.

FIG. 1 shows the configuration of a detector used in the present invention. This detector includes a conversion section that converts pressure, temperature, and other arbitrary measured quantities into electrical data, and a transmission section that transmits the signal. We are prepared. These include, for example, a modulator that modulates mechanically using a plug and socket, or a pulse frequency modulation method, and a gate that controls the output of the modulated signal that is the output of this modulator. and a gate controller that determines the timing of signal output.

Each element of this transmission section employs elements that can be easily integrated, and the entire structure is formed into a single chip using integration technology to make it compact. On the other hand, if signals are transmitted using the frequency modulation method described above, noise resistance is high, and multiplex transmission is also possible by changing the center frequency.

In FIG. 2, n detectors are connected in series, and the outputs of these detectors are connected to a signal line ≧1 and
This is to synchronize the signal outputs that are connected by wiring on both sides of each detector, and the signals from each detector are transmitted through the signal line in a time-division manner by a control signal sent through this control line.

The information processing unit, which is connected to the detector group by the power line, signal line, and control line, is connected to each detector by the power line to operate the power source, and the information processing unit is frequency-modulated and output from the detector group. The demodulator is equipped with a demodulator that demodulates the measured data, and a controller that outputs a control signal to control the transmission of the measured data from the detector group. It is equipped with a transfer section for transferring data to a computer, etc.

Input to gate controller. The gate controller includes a flip-flop operated by the control signal, the flip-flop is turned on by the control signal as shown in FIG. 3B, and then operates the monomulti after a certain period of time,
A gate signal with a constant time width as shown in FIG. 3C is output. This gate signal opens the gate in FIG. 1 to output measurement data from the frequency modulator, and the measurement data is transmitted to the demodulator of the information processing section through the signal line (see FIG. 3H). ” - The flip-flop has a slight time difference with the output of the gate signal from the monomulti, and the control signal is transmitted to the next stage detector, and finally the nth detector (n)
is operated to operate the flip-flop and monomulti at the timings shown in FIG. 3F and G. Therefore,
n frequency-modulated signals are output on the signal line at the timing shown in FIG. 3H, and are transmitted to the demodulator of the information processing section. Measurement data from detector (1) to detector (n) can be detected. Since the frequency-modulated signals from each detector are separated by a no-signal portion, the detectors can be easily identified depending on their order.

They can be arranged in extremely high density. In addition, 1
3 is a power supply line, 14 is a signal line, and 15 is a control line. The converting section in the above detector is constituted by a pressure transducer, and by embedding them in the substrate 12 made of a flexible material or the like as necessary, it can be made into a pressure distribution detector. If configured as a pressure and temperature detector, it can be made into a combined pressure and temperature sensor. Furthermore, in this case, the utility value is extremely high in that a large number of detectors can be connected to the information processing section through several signal lines.

Note that the arrangement of the detectors is free, so there is also a method of use such as forming a group of detectors into a string and wrapping it around a three-dimensional object.

[Brief explanation of the drawing]

FIG. 4 is a block diagram showing an example of the use of the above detector. Designated Agent, Director of Product Science Research Institute, Agency of Industrial Science and Technology, Tsukasa Takahashi

Claims (1)

[Claims] generates a signal, opens the gate for outputting the measurement data from the converter, transmits the measurement data through the signal line, generates a control signal to be sent to the next stage detector through the control line, and connects it in series. A method for connecting a large number of detectors using an autonomous signal transmission method, characterized in that the measurement data from the converter of each detector is transmitted in time division through a signal line by repeating sequentially for the detectors connected to the detector.