JPH11306479A - Measuring instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To immediately report the occurrence of an abnormality on a measuring instrument to a computer for measurement without complicating a measurement program. SOLUTION: A measuring instrument 1 is constituted so as to transmit measured data to a computer 2 for measurement under its control. When an abnormality occurs on this measuring instrument under the control of this computer 2, abnormality reporting data are transmitted to this computer 2 is place of these measured data.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling the performance of a product in a factory for producing electric appliances, for example, by controlling the computer by using a suitable measuring computer. It relates to a measuring instrument.

[0002]

2. Description of the Related Art Generally, for example, in an electric product factory, a measuring instrument is controlled by a measuring computer for measuring and inspecting the performance of the product, and the measuring instrument is used to control the measuring instrument. The measurement data is transmitted to the computer for measurement, and the performance measurement and inspection are automatically performed.

In this case, the measuring computer is programmed to set the measuring instrument to a certain state and to transmit necessary measurement data from the measuring instrument to the measuring computer.

However, even when an abnormality occurs in the measuring instrument, the measuring instrument continues to transmit the measurement result measurement data to the measuring computer unless the measuring instrument is completely stopped. For example, the measurement data obtained when the synthesizer inside the measuring instrument is unlocked due to an instantaneous power interruption is not reliable.

However, this measuring instrument generates a flag signal indicating that the internal synthesizer has been unlocked, and transmits this unreliable measurement data to the measuring computer, although this is displayed.

In order to avoid this, conventionally, an operator has
We regularly monitor this measuring instrument for any abnormalities, and if we find any abnormalities, we clearly go back to the time when there was no abnormalities in this measuring instrument and re-measure the measurement data. Was big.

Further, the measuring computer can know the abnormality of the measuring device by using the control function of the measuring device. However, conventionally, it takes a long time to inspect the abnormality and the control program becomes complicated. It was not done for a reason.

The present invention has been made in view of the above, and when an abnormality occurs in a measuring device controlled by a measuring computer,
An object of the present invention is to be able to notify the computer for measurement of the occurrence of the abnormality without taking time and without complicating the measurement program.

[0009]

The measuring instrument of the present invention is controlled by a measuring computer, and transmits measurement data to the measuring computer. The measuring instrument is controlled by the measuring computer. When an abnormality occurs in the measuring device, the abnormality notification data is transmitted to the measurement computer instead of the measurement data.

According to the present invention, when an abnormality occurs in the measuring device under the control of the measuring computer, the abnormality notification data is transmitted to the measuring computer instead of the measurement data. The measurement computer can be notified of the occurrence of the abnormality without taking much time and without complicating the measurement program.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a measuring instrument according to the present invention will be described below with reference to FIG.

In FIG. 1, reference numeral 1 denotes a measuring instrument having an external controller interface according to the present embodiment, for example, an IEEE-488 interface.
The EE-488 is connected to the measuring computer 2 via the interface bus 3 so that the measuring computer 1 controls the measuring instrument 1 and transmits the measurement data from the measuring instrument 1 to the measuring computer 2. .

To explain the measuring instrument 1, reference numeral 1a denotes a data input terminal to which data of performance measurement / inspection of a product is supplied. The measurement data of the measurement result obtained by the measurement circuit 11 is supplied to a central control unit (CPU) 12 composed of a microcomputer for controlling the measurement device 1.

Further, an IEEE-488 driver 13 is provided in the measuring instrument 1, and the CPU 12 and the IEEE-48
8 driver 13 via a data bus 14 and a control bus 15, and a chip select signal from the CPU 12 via a chip select line 16.
488 driver 13 so that the IEEE-488 driver 13 is controlled by the chip select signal.

The measuring device 1 is controlled by the measuring computer 2 via the IEEE-488 driver 13 and the IEEE-488 interface bus 3, and the measurement data from the measuring device 1 is transmitted to the measuring computer 2. I do.

In this embodiment, a flag signal generated when the measuring circuit 11 is abnormal is transmitted to the C signal via the flag line 17.
The signal is supplied to the PU 12 and the CPU 12 causes an interruption by the flag signal.

When this interrupt is issued, the IEEE
-488 Data to be sent to the driver is not measurement data but predetermined abnormality notification data, for example, continuous zero data.

Since the present embodiment is configured as described above, when an abnormality occurs in the measuring device 1 while the measuring device 1 is controlled by the measuring computer 2, a flag indicating the occurrence of the abnormality is generated. Since the signal is interrupted and converted into measurement data and the abnormality notification data is transmitted to the measurement computer 2, the occurrence of the abnormality in the measuring instrument 1 can be measured without taking time and complicating the measurement program. This measurement computer 2
You can let them know.

FIGS. 2 and 3 show other examples of the embodiment of the present invention. 2 and FIG. 3, the same reference numerals are given to the portions corresponding to FIG. 1 in FIG. 2 and FIG. 3, and the detailed description thereof will be omitted.

In the example shown in FIG. 2, an abnormality notification data generation circuit 20 for generating predetermined abnormality notification data is provided, and the abnormality notification data generation circuit 20 and the IEEE-4
IEEE-48 configured similarly to the 88 driver 13
8 and a data bus 22, and the IEEE-488 driver 21 is connected to the CPU 12 and the control bus 15.

Also, the IEEE-488 driver 1
3 and 21 are connected to a bus switch 25 via data buses 23 and 24, respectively, and this bus switch 25 is controlled by a flag signal generated from the measuring circuit 11 when an abnormality occurs. 488
Connect to the interface bus 3 and connect the data bus 24 to the IEEE-488 interface bus 3
It is like connecting to.

The measuring instrument 1 is provided with a chip select changeover switch 26 for supplying a chip select signal from the CPU 12 to a movable contact 26a of the chip select changeover switch 26 and one of the chip select changeover switches 26. The chip select signal obtained at the fixed contact 26b of the
The IEEE-488 driver 21 supplies the chip select signal obtained at the other fixed contact 26c to the IEEE-488 driver 21 via the chip select line 16a.
To be supplied.

The movable contact 26a of the chip select changeover switch 26 is controlled by a flag signal generated by the measuring circuit 11 when an abnormality occurs. When the movable contact 26a is normal, the movable contact 26a is connected to one fixed contact 26b. Connects the movable contact 26a to the other fixed contact 26c. Other configurations are the same as in the example of FIG.

In the example of FIG. 2, when the measuring instrument 1 is normal, the measurement data of the measurement result is transmitted from the CPU 12 to the data bus
4, IEEE-488 driver 13, data bus 2
3, transmitted to the measurement computer 2 via the bus switch 25 and the IEEE-488 interface bus 3 and, in the event of an abnormality, replaces the measurement data with the abnormality notification data from the abnormality notification data generation circuit 20 or the data bus 22,
The data is transmitted to the measurement computer 2 via the IEEE-488 driver 21, the data bus 24, the bus switch 25, and the IEEE-488 interface bus 3.

Therefore, in the example of FIG.
Is controlled by the measurement computer 2,
When an abnormality occurs in the measuring device 1, the bus switch 25 and the chip select changeover switch 26 are switched by the flag signal, and the abnormality notification data is transmitted to the measurement computer 2 instead of the measurement data. The measurement computer 2 can be notified of the occurrence of an abnormality in the measuring instrument 1 without taking much time and without complicating the measurement program.

In the example of FIG. 3, a data changeover switch 30 is provided on the data input side of the measuring instrument 1 of FIG.
0 is supplied to one fixed contact 30b of the data switch 30 and a high frequency signal from the high frequency oscillator 31 is supplied to the other fixed contact 30c of the data changeover switch 30 as abnormality notification data, and is obtained at the movable contact 30a of the data changeover switch 30. The data is supplied to the measurement circuit 11.

The movable contact 30a of the data changeover switch 30 is switched by the measuring circuit 11 by a flag signal generated at the time of abnormality.
Is connected to one fixed contact 30b when normal, and this movable contact 30a is connected to the other fixed contact 30c when abnormal. The configuration of FIG. 3 is otherwise the same as that of FIG.

In the example of FIG. 3, when the measuring instrument 1 is controlled by the measuring computer 2 and an abnormality occurs in the measuring instrument 1, the data is switched by a flag signal from the measuring circuit 11. The movable contact 30a of the switch 30 is switched, and the high-frequency signal, which is the abnormality notification data obtained at the other fixed contact 30c, is changed into the measurement data and transmitted.
The measurement computer 2 can be notified without taking much time and without complicating the measurement program.

It should be noted that the present invention is not limited to the above-described example, and may adopt various other configurations without departing from the gist of the present invention.

[0030]

According to the present invention, there is an advantage that the occurrence of an abnormality in the measuring instrument can be notified to the measuring computer without taking much time and without complicating the measuring program.

[Brief description of the drawings]

FIG. 1 is a configuration diagram showing an example of an embodiment of a measuring instrument of the present invention.

FIG. 2 is a configuration diagram showing another example of the embodiment of the present invention.

FIG. 3 is a configuration diagram showing another example of the embodiment of the present invention.

[Explanation of symbols]

1 ‥‥ Measuring instrument, 2 ‥‥ Measuring computer, 3 ‥‥ IE
EE interface bus, 11 ‥‥ measurement circuit, 12 ‥
{CPU, 13, 21} IEEE-488 driver, 14, 22, 23, 24 {data bus, 15}
Control bus, 16, 16a {chip select line, 17 flag line, 20 abnormality notification data generation circuit, 25 bus switch, 26 chip selector switch, 30 data switch, 31 switch ‥
High frequency oscillator

Claims (3)

[Claims] 1. A measuring instrument controlled by a measuring computer and configured to transmit measurement data to the measuring computer, wherein an abnormality occurs in the measuring instrument while being controlled by the measuring computer. A measuring device for transmitting abnormality notification data to the measurement computer in place of the measurement data. 2. The measuring device according to claim 1, wherein the abnormality notification data is transmitted using an interrupt by a flag signal for notifying the abnormality of the measuring device. 3. The measuring device according to claim 1, further comprising an abnormality notification data generator that generates the abnormality notification data, wherein a flag signal for notifying an abnormality of the measuring device is provided.
A measuring instrument wherein the measurement data is switched to the abnormality notification data.