JPH0257094A - Discrimination method for plural signals - Google Patents

Abstract

PURPOSE:To correctly recognize a next signal even when no signal which is not generated in plural signals exists and an error is generated in the generation time of respective signals by making a signal to be a reference into the preceding signal, setting the time of these signals and recognizing the signal with the measurement of the time between signals. CONSTITUTION:A rotation type manufacturing machine A, having plural pieces of heads 7 by which a work to be an inspecting subject is supported, is moved by 2 head quantity with the movement of one time and repeats an action further moving by 2 head quantity after hanging up for a specific time. An external device B outputs to a computer device C through an OR circuit 6 three pieces of pulse signals respectively informing the movement detection of the manufacturing machine A, to change a measurement circuit 5 into a measurement position 1 side with attaining the confirmation of a work detection in the measurement position 1 through a work detection device 3 and to change the measurement circuit 5 into a measurement position 2 side with attaining the confirmation of the work detection in the measurement position 2 through a work detection device 4. Thus, plural pulses different in a function to fetch with one input circuit can be recognized by controlling the plural pulse signals different in the function within a particular time to be generated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a method for identifying a plurality of signals flowing through one signal line.

(Prior art) Conventionally, in order to distinguish between multiple signals, the time when the first signal is generated is used as a reference, the time from this reference time until each signal is generated is measured, and the time is measured based on this time. I was doing signal identification.

(Problem to be solved by the invention) However, if the first signal that serves as the reference is not generated normally due to some kind of malfunction, or if there is an error in the generation time of each signal, the time from the reference time to each signal will also be inaccurate. In some cases, these signals could not be recognized.

The present invention has been made in view of the above circumstances.

It is an object of the present invention to provide a method for recognizing signals by setting the previous signal as a reference signal, setting the times of these signals, and measuring the time between the signals.

[Structure of the invention]

(Means for solving problems) In order to solve the above-mentioned problem, in the present invention.

In a method for identifying a plurality of signals that occur in a certain order, the time between the plurality of signals is set using the signal immediately before each signal as a reference, and the signals are distinguished by measuring the time between the signals. Features.

(Function) In order to recognize multiple signals, the time between signals is set based on the signal immediately before each signal. This time is measured and each signal is recognized based on the set time.

(Embodiment of the Invention) An embodiment of the present invention applied to a characteristic inspection system on a rotary manufacturing machine having a plurality of heads will be described. Figure 1 shows a system configuration diagram. On a rotary manufacturing machine having a plurality of heads (7) that hold a workpiece to be inspected, two heads are moved in one movement.
After stopping for a certain period of time, the operation of moving two more heads is repeated. The external device (Bl) detects the movement of the manufacturing machine (2) and switches the measurement circuit (5) to the measurement position (1) after confirming that the workpiece detection device (3) detects a workpiece at the measurement position (1). 3 pulse signals each informing that the measurement circuit (5) has been switched to the measurement position (2) when the workpiece detection device (4) has confirmed that the workpiece has been detected at the measurement position (2). is outputted to the computer 1t (0. The three pulse signals are outputted to a pair of signal lines through the OR circuit (6) as shown in FIG. As shown in Fig. 3, the output rule is that the signal 1 that is output when the movement of the manufacturing machine surface is detected is output every time 1 for a fixed period of time if there is continuous movement of the manufacturing machine surface.Measurement position ( In 1), when the work detection device (3) confirms that the work has been detected, the measurement circuit (5) is switched to the measurement position (1) and the signal 2 is output.

Only when the workpiece is confirmed at measurement position (1) after signal 10 is input, the signal is output within time 20 after signal 10 is input.

After confirming that the workpiece has been detected by the workpiece detection device (4) at the measurement position (2), the measurement circuit (5) is switched to the measurement position (2) side and the output signal 3 is output from the measurement position (2) after the signal 10 is input. ) only when the workpiece is confirmed, signal 20 is input or output between time 2 and time 3. FIG. 4 shows the operation flowchart of the computer apparatus (0) in this embodiment having such a configuration. First, it waits for the input of signal 1. After the input of signal 10, time 2 is set, and it waits for the input of signal 2. The set time 2 is
The progress is monitored using the timer interrupt function inside the computer device (O).Specifically, if time 2 is 1 second and a timer interrupt occurs every 100 m5ec, the value of time 2 to be set. is 10.

Counts down by 1 for each timer interrupt and returns to 0.
The progress will be monitored to see if it becomes ok.

If signal 20 is input before time 2 elapses, the workpiece at measurement position (1) is inspected. After inspection.

Or, if time 2 has elapsed without input of signal 2, time 3
Set and wait for signal 30 input. The progress of set time 3 is monitored using the timer interrupt function inside the computer device (0) in the same way as time 2. If signal 30 is input before time 3 elapses.

Inspect the workpiece at measurement position (2).

After inspection, or if time 3 has elapsed without signal 30 input, wait for signal 10 input again.

In this way, multiple pulse signals with different functions.

By managing it only within the time it will occur.

It becomes possible to recognize a plurality of pulse signals with different functions taken in by one input circuit.

〔Effect of the invention〕

According to the present invention, in a method for identifying a plurality of signals occurring in a certain order, the time between the plurality of signals is set with reference to the signal immediately before each signal.

Since signals are distinguished by measuring the above-mentioned time between signals, it is possible to accurately recognize the next signal even if there is no signal that does not occur among multiple signals or if there is an error in the generation time of each signal. Can be done.

[Brief explanation of the drawing]

Figure 1 is a system configuration diagram, Figure 2 is an equipment connection diagram, and Figure 3 is a system configuration diagram.
The figure is a pulse signal output rule diagram, and FIG. 4 is a computer device operation flowchart. A: Rotary manufacturing machine, B: External bending device. C... Computer equipment.

Claims (1)

[Claims] In a method for identifying a plurality of signals that occur in a certain order, the time between the plurality of signals is set using the signal immediately before each signal as a reference, and the time between the signals is measured. A method for identifying multiple signals, characterized by distinguishing signals by.