JPS6318288A - Measuring apparatus for long-time timer - Google Patents

Abstract

PURPOSE:To enable highly accurate measurement while achieving a higher debugging efficiency of a program, by setting a display channel to display a measuring time and a signal data at a desired channel. CONSTITUTION:A detection probe 3 detects one or more control output signals of an electronic controller simultaneously. A switch 4 for specifying display channels and a switch 5 for setting display channels are used to switch the display and a mode switch 2 selects the start, stop or resetting of measurement. The control output signal, a channel and a measuring time corresponding to the channel are displayed on a signal display element 7, a channel display element 9 and a time display element 8 respectively. Then, a microcomputer 1 detects changes in the control output signal inputted from the probe 3 to measure and record the time until the signal changes and data of the signal several times continuously. Thus, a display channel is set 5 to display a measuring time and signal data of a desired channel on the elements 7, 8 and 9.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a measuring device for a long timer of an electronic control device using a microcomputer or the like.

2. Description of the Related Art Conventionally, when debugging a program of an electronic control device using a microcomputer, etc., a debugging device with an LED, etc. connected to the signal output terminal is used, and a measurer can directly set the stop quotation time for the LED to turn on and off. It was measured by etc.

Problems to be Solved by the Invention In such conventional methods, when the timing of change in the signal to be measured is long, the measurer must monitor the change in the signal for a long time, and the measurer There are problems such as an increase in the burden on the system and a decrease in debugging efficiency. In addition, since measurements are performed by human operators, errors are likely to occur and highly accurate measurements are difficult.

The present invention has been made in view of the above points, and provides a long-time timer measurement that has a simple configuration, reduces the burden on the measurer when debugging a program, improves debugging efficiency, and enables highly accurate measurement. The purpose is to provide equipment.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a long-time timer measuring device that simultaneously detects one or more control output signals of an electronic control device, as shown in FIG. an input means, a display switching means consisting of a = ≠ switch for specifying a display channel and a ≠;:; thousand switch for setting a display channel;
Select start, stop, and reset of measurement #≠;
measurement mode input means consisting of a test switch; display means for displaying control output signals, channels, measurement times corresponding to the channels, etc.; reference clock generation means consisting of an oscillator; the signal input means; display switching input means; , measurement mode input means, and means for counting time based on signals from the reference clock generation means and outputting a display signal to the display means.

Effect: With the above configuration, the present invention detects a change in a control output signal of an electronic control device, and continuously measures and stores the time until the signal becomes Y and the signal data multiple times (multiple channels). By setting the display channel in advance, the measurement time and signal data of any channel/I/(order) can be displayed, so the measurement time and signal data can be displayed for a long time without requiring the operator's intervention. Time measurement by the timer will be performed.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the accompanying drawings FIGS. 1 and 2.

In FIG. 1, 1 is a microcomputer, 2 is a mode switch that starts, stops, and resets measurement, 3 & is a signal detection probe connected to the output terminal of the current control device to be measured, 4 is a display/+4 constant switch,
5 is a display channel set switch, 6 is an external oscillator that generates a measurement reference clock, 7 is an LED, etc.
Consists of a signal display element, 8TFI 7 segment LED, that displays signal data detected by a signal detection probe.
Time display element for displaying measurement time for each channel, 9
! I'17 segment) It is a display element which can also be an LED. 0UT1 to 0UT20 are output terminals of the microcomputer 1, IN1 to IN9 are input terminals of the microcomputer 1, and INT is an interrupt input terminal of the microcomputer, to which an external oscillator 6 is connected.

Also, by generating a scan output at UT11 to 0UT20 and activating one of the LEDs in the time display element 8 or channel display element 9, and generating a 7-segment theta output at 0UT5 to 11, Controls the display of time display element 8 and channel display element 9.

Figure 2 shows the microcomputer software7
0 - Chart. A to A in the figure represent steps. Here, the operation of the present debugging device will be explained according to FIG.

When the program starts, first at step A the INT
It waits for the rising edge signal from the external oscillator to be input to the terminal, and when the rising edge 9 signal is inputted, the process proceeds to step B.

In step B, output signals from various switches IN1 to INg and the device under test are input.

Next, in step C, a timer count is determined based on the CNT flag. If there is a CNT flag, step D
Then, the timer count specified by the count pointer is performed.

Next, in step E, it is determined whether or not the mode switch has been pressed. If the mode switch has been pressed, the process proceeds to step F, where the mode counter is incremented by one. However, the counter for this mode is a 0-20 counter.

Next, in step G, it is determined whether or not the mode counter is 0. If it is 0, the process jumps to step J, and if it is not 0, the process proceeds to step H.

In step H, check whether the display channel set switch has been pressed or not! If the switch is pressed, the input value of the display channel designation switch is set in the display pointer in step I.

Next, in step J, a mode counter is used to determine the mode. If the kakunta is 0, the process proceeds to step K, if it is 1, the process proceeds to step P, and if it is 2, the process proceeds to step V.

First, the case where the mode counter is O will be explained. Clear the timer for each channel in steps. Next, step and set the mode counter to O. Next, in step M, the CNT7 lag is reset, and in step N, the count pointer, channel pointer and display pointer are cleared.

In this manner, when the mode counter is 0, the clearing operation is performed and then the step OK is entered.

In step ○, where indicated by the display pointer,
The channel and the timer value corresponding to the channel are displayed by scanning output from 0UT5 to 0UT20, and the signal detection data of the same channel is displayed from 0UT1 to 0UT20.
Displayed by static output of 0UT4. and,
Return to L○OP.

Next, the case where the mode counter is 1 in step J will be described. In this case, the process proceeds to step P after step J. In step P, measurement between IN6 and storage of the timer value and signal data are performed.

Next, a case where the mode counter is 2 will be explained. This may be a jump from step J to step V or a jump from step R. When the end of the measurement is instructed in step R, 2 is set in the mode counter in step V. Next, in step W, the CNT flag is reset, thereby prohibiting timer counting. Next, the process goes through step O and repeats the loop.

In this way, when the mode counter is 2, the measurement end process is performed, but in steps G1H and I,
When the display channel set switch is pressed, the value of the channel designation switch is set to the display pointer, making it possible to display the timer measurement value and signal data of any channel.

Therefore, every time a change in the output signal of an electronic control device, etc. is detected, the counting timer is switched and the timer value and output signal data are memorized. Determine whether or not there is. If there is no change, jump to step U; if there is a change, proceed to step Q. In step Q, the count pointer and channel pointer are incremented, and in step D, the timer for counting is changed. Next, in step R, it is determined whether or not the measurement is completed based on the incremented count pointer and channel pointer values. If both pointers indicate the end of measurement, jump to step V,
If the measurement is not yet completed, proceed to step S. In step S, the signal data input this time is stored in the memory indicated by the channel pointer. Next, in step T, the channel pointer value is set as the display pointer value. Next step U
sets the CNT7 lag so that the timer count is done in step D. Next, the process proceeds to step O, where display processing is performed and the loop is repeated again.

In this way, when the mode counter is 1, it is possible to measure the time of continuous operation by one measurement.

Effects of the Invention As described above, according to the present invention, with a simple circuit configuration, the burden on the measurer during long-term tire measurements can be reduced, and measurement accuracy and efficiency can be improved.

[Brief explanation of the drawing]

Fig. 1 is a circuit diagram of a measuring device for a long time timer according to an embodiment of the present invention, Fig. 2 is a flowchart explaining the operation of the measuring device for a long time timer, and Fig. 3 is a measuring device for a long time tire. FIG. 2 is a block diagram showing the function implementation means. 1...Microphone computer, 2...Mode switch, 3...Signal detection probe, 4...
Display channel designation 7 inches, 5...Display channel set switch, 6...External oscillator, 7...
...Signal display element, 8...Time display element, 9
- Channel display element. Name of agent: Patent attorney Ken Nakao and 1 other person/-
-, Microcomputer 6-1) Department! [FI Figure 1 Figure 2

Claims (1)

[Scope of Claims] Signal input means for simultaneously detecting one or more control output signals of an electronic control device; display switching input means comprising a switch for specifying a display channel and a switch for setting a display channel; and a start of measurement. measurement mode input means consisting of a switch for selecting , stop, and reset; display means for displaying a control output signal, channel, and measurement time corresponding to the channel; reference clock generation means consisting of an oscillator; A measuring device for a long-time timer, comprising a display switching input means, a measurement mode input means, and a determination means for counting time based on a signal from a reference clock generation means and outputting a display signal to the display means.