JPS5895281A - Clocking device - Google Patents

Abstract

PURPOSE:To attain concentrical data processing of signals from plural detectors with a simple wiring by providing each detector with a simple signal converting circuit. CONSTITUTION:Respective output signals of detectors 21-2n are supplied to signal converters 31-3n and respective converted signals are applied to a data processing device 1 through signal cables 41-4n having two conductors respectively. In the converter 3i, a counter 311 counts up a pulse (a) from the processing device 1 and a converter 312 converts the counted value into a digital signal. The converted signal is switched T<r1> by an operation signal (e) from the detector 2i and sent to the processing device 1. The device 1 concentrically measures the operation time of the detector 2i at the receiving timing of the received signal to attain data processing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a timekeeping device, and particularly to an improvement in a method for processing signals from a detection device.

Conventionally, in swimming timing devices and the like, signals from a detection device such as a touch board are connected to an input circuit of a data processing device by providing a separate signal line for each course as shown in Fig. 1. In such a configuration, the input signal cable becomes bulky and the connector to be connected becomes large, which is an obstacle to downsizing the device. Also, with a cable like the one shown in Figure 1, depending on the installation location of the data processing device,
This method had the disadvantage that the correspondence between the signal line and the detection device was reversed, and the data processing had to be changed.

The object of the present invention is to provide an extremely effective means for eliminating the nine defects mentioned above, and is based on a configuration in which a simple signal conversion circuit is provided for each detection device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A timekeeping device according to the present invention will be described below with reference to the drawings.

FIG. 2 is a schematic diagram of an embodiment of the present invention. Reference numeral 1 denotes a data processing device, which has a clock function, a data storage function, an input signal processing function, a data output function such as a printer, and the like. Reference numerals 21 to 2n are detection devices, and although a touch plate is shown in this embodiment, various detection devices such as a photoelectronic device and a gater may be used. The output signal of this detection device is connected to a signal conversion device indicated by 5t-5n, and this portion is connected to the detection *fi
It may be internalized in 21 to 2n. Specifically, a signal cable 42 having two conductors is connected between adjacent signal converters.
.about.4n, and the data processing device 1 and the signal conversion device closest thereto are also connected by a signal cable 41 similar to that of Fi.

FIG. 3 shows the circuit configuration of signal conversion #[31. ata' is a signal cable connection fJ, electronic, to which cables 41 and 42 are connected. 311 is a counting circuit, and a capacitor C2 is connected to the input terminal OK of the counting pulse via a counter circuit constituted by a resistor R2.
'The signal line from ' is connected and crossed, reset input terminal R
A signal line from the terminal aha' is also connected to the terminal aha' via an integrating circuit constituted by a capacitor C5 and a resistor R3. The output of the counter 311 is connected to a digital signal conversion circuit 312. The conversion outputs of this digital signal conversion circuit 3+2 are calculated by the number of times ji3311.
When the is reset, all logic 0 is output, but as the counting circuit 311 counts the pulses,
A conversion output corresponding to the count value outputs a logic 1. Of the conversion outputs ■ to ■, only one output is selected by jumper IIJ, and Q4. It is connected to the base of the transistor Trl via a pA differential circuit. This figure shows that conversion output ■ is selected by jumper J. Further, the emitter of the transistor Tr1 is connected to an input terminal θ to which a switch signal of the detection device is connected.
, and the collector is connected to terminal a r a '. Constant resistance RI connected to terminal & + &'
+ Zener diode ZD and capacitor C1, the voltage stabilizing circuit includes the above-mentioned mental counting circuit 311. This constitutes an operating power supply for the digital signal conversion circuit 512.

Next, the operation of the circuit of the signal conversion device will be explained. FIG. 1 is a timing chart showing signals of each part.

A signal in which a DC component and a pulse signal are superimposed is supplied from the data processing device 1 to the terminal a. Among these signals, the pulse (gvi) in the negative direction with respect to the DC voltage is the reset pulse, and the pulse h in the positive direction is the count pulse. The pulse width of each pulse g is several tens to hundreds of microseconds, and the pulse h is several microseconds.

When the pulse g is applied, the reset electron R of the counting circuit 311 is provided with an integrated constant signal as shown by d, and the counting circuit 311 is reset.

At the rise of r and sills g, the differential signal g' shown by b is input to the counting input σK, but since the aforementioned friend IJ set signal is delayed by the integrating circuit, no counting is performed. . Next, when the pulse h is supplied, the differential signal h' is also input to b, and the counting circuit 511 counts this signal. This counting state is output as shown in AIBIC,D. A digital signal conversion circuit 512Fi converts the count output and outputs it as signals shown in (1) to (4). In other words, when the count value is 1, the output ■ will be vibrating, and when the count value is 2, the output ■ will be 1''.Similarly, depending on the count value, the output ■ will be 1''. are output sequentially. In FIG. 3, the output ■ is selected by the jumper J, so when the count value reaches 1, the differential signal shown at the base of the transistor Trl is applied. At this time, when the terminal e is open, the transistor Trl is not conductive, but when the detection device 21 is activated and the terminal θ is closed, the transistor Tr1 is conductive, short-circuiting the signal at the terminal a1. Through this operation, a signal shown in signal waveform a 1 is obtained.

On the other hand, the human power R for resetting the counting circuit 311 requires a resistor R.
Since the integrating circuit consisting of the 31 capacitor C5 is connected, the count value is not reset by the signal 1.

In the data processing device 1, the signal 1 described above is a pulse h
It is possible to know which detection device is activated by detecting whether the signal is obtained at the number of times the signal is detected. In addition, in the timing chart of Fig. 4, there is a time difference between the timing when the detection@lid is activated and the switch is closed, indicated by e, and the timing when signal 1 is obtained, but the signal given by a is By setting the cycle to be sufficiently shorter than the minimum unit of measurement, the error can be ignored.

As described above, according to the present invention, by adding a signal conversion device with a simple circuit configuration, signals from a large number of detection devices can be processed centrally with simple wiring. It has this effect.

[Brief explanation of drawings]

FIG. 1 is a connection diagram showing a timekeeping device with a conventional configuration. FIG. 2 is a schematic configuration diagram of an embodiment of the present invention. Third
FIG. 4 is a circuit diagram of a signal conversion device according to an embodiment of the present invention, and FIG. 4 is a timing chart showing the circuit operation. 1... Data processing devices 21 to 2n... Detection devices 31 to 5n... Signal conversion devices 41 to 4n... Cable 511... Counting circuit 312... Digital signal conversion circuits F1 to R4...・Resistor 01 to C4...Capacitor Trl...Transistor ZD...Zener diode J...Jumper OK...Counting pulse 1 child R...Reset a l a'...Cable connection terminal e ···detection@
Type connection terminal and above Applicant Daini Seikosha Co., Ltd. Figure 3 Figure 4 ■ OFF

Claims (1)

[Claims] In a system in which a plurality of detection devices operate and centrally measure time t and perform data processing, a data processing device, a plurality of detection devices, and an output signal pipe of the detection device are provided for each detection device. a signal conversion device that converts into a distinguishable signal for each detection device; and the data processing device;
and a cable for connecting the signal converting device, in the signal converting device, a signal terminal to which the cable is connected, an input terminal to which a switch signal of the detection device is connected;
a counting circuit that counts pulse signals from the signal terminal;
A timekeeping device comprising: a digital signal conversion circuit for converting the count value of the counting circuit; and a switch element connected to the output of the digital signal circuit and opening/closing a signal at the signal terminal.