JPS63157075A - Measuring instrument for electronic circuit - Google Patents

Abstract

PURPOSE:To improve the operating rate of a device by providing a means which diagnoses whether or not plural pieces of hardware for measurement are in a state where there is no hindrance to the execution of a measurement program and a selecting means which selects stand-by hardware according to the diagnostic result. CONSTITUTION:A computer 1a edits the measurement execution program by using a tester language or translates it into object codes which can be executed by a sequence controller 2a. Then if a 3rd measurement voltage source 5 becomes faulty when a certain electronic circuit is measured, 1st-5th voltage sources 3-7 for measurement are named P1-P5 in order and a controller 2a diagnoses functions, so that it is judged that the voltage sources P1, P2, P4, and P5 are normal. On the other hand, when voltages sources that the computer 1a requires are denoted as Pa-Pc, object codes of the execution program are determined so that Pa=P1, Pb=P2, and Pc=P4 when the functions of those voltage sources are represented as P (same function). Therefore, the measurement execution program and hardware correspond to each other one to one and a measurement is taken.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an electronic circuit measuring device, and particularly to an electronic circuit measuring device that diagnoses and self-repairs the measuring hardware when controlling the measuring hardware. It is about what happened.

[Conventional technology]

In conventional electronic circuit measurement equipment of this type, a unique hardware address is assigned to each of the DC voltage sources, voltmeters, signal generators, etc. required for measurement, and these hardware are controlled by a dedicated sequence controller. is common. In this case, in order to execute a series of control sequences for executing measurements, a measurement execution program is created using a tester language that can be applied to the sequence controller that is the control means. Even if this execution program uses a tester language, it decodes and specifies addresses in one-to-one correspondence with the hardware, and transmits setting values and the like as data, and is inseparable from the hardware.

FIG. 4 shows an example of a conventional electronic circuit measuring device. This computer is often shared with a sequence controller 2. 2 is a sequence controller for decoding an execution program and controlling measurement hardware 3 to 10, and 3 to 7 are measurement voltages. In this case, five units having the same function are installed. Further, 8 is a signal source, 9 is a voltage measuring device, 1O is a control circuit for switching the relay of the measuring head 11, etc.
Reference numeral 11 denotes a measuring head, and external components for measuring the electronic circuit include a switching circuit for changing constants and the like.

Next, the operation of this conventional electronic circuit measuring device will be explained based on FIG.

First, using the computer 1, a measurement execution program is created using the tester language and compiled.

At this time, it is common to set the hardware installed in the measuring device using an expression method similar to natural language. Of course, we use expressions that correspond one-to-one for each piece of hardware.

Next, the sequence controller 2 translates the measurement program into an executable object language using the computer 1 described above. However, there are many measuring devices that use the sequence controller 2 to perform the processing up to this point.The 0th-order sequence controller 2 specifies addresses in one-to-one correspondence with the hardware 3 to 10 and transfers data. After setting the measurement conditions and obtaining the measurement results using, for example, the voltage measuring device 9, the data are transferred to the sequence controller 2, and the sequence controller 2 outputs the data and makes a pass/fail judgment. Depending on the device, its type.

The composition such as quantity is different.

[Problem that the invention seeks to solve]

Conventional electronic circuit measurement equipment is configured as described above, so if the hardware used in a measurement execution program breaks down or becomes unusable, the program must be rewritten or It was necessary to repair the hardware.

Further, even if spare hardware with the same function was already installed in the tester, it was impossible to realize a so-called automatic repair function, such as automatically switching to use.

This invention was made to solve the above-mentioned problems, and it is possible to automatically determine whether a hardware malfunction will cause a failure in the execution of a measurement program, and to save spare hardware, etc. .

The object of the present invention is to obtain an electronic circuit measuring device that can automatically switch and perform measurements.

[Means for solving problems]

The electronic circuit measuring device according to the present invention includes a hardware group specifying means for specifying a hardware group having functions necessary for executing a measurement program, and a state in which a plurality of hardware for measurement does not interfere with execution of the measurement program. The device is equipped with a diagnostic means for diagnosing whether or not the present invention is present, and a selection means for selecting executable hardware such as spare hardware based on the diagnosis result.

[Effect]

In this invention, when translating a measurement program, the hardware group specifying means does not convert the measurement program into an access method for each piece of hardware, but uses a method that allows access to a group of hardware having the same function using a general name. Convert to In addition, the selection means creates a configuration table consisting of combinations of hardware that can execute the above program, refers to the result, gives a unique address to the hardware, and enables unique access. do.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows the overall configuration of an electronic circuit measuring device according to the present invention. In the figure, H5 to H are a plurality of hardware for measuring the characteristics of an electronic circuit, and Ml is a function necessary for executing a measurement program. A hardware group specifying means for specifying a hardware group having the above-mentioned hardware H1;
~H, is a hardware diagnostic means for determining whether or not the measurement program is executable; and M3 is a hardware diagnostic means that determines whether or not the plurality of hardware H1 to H7 is in an executable state to execute the measurement program based on the diagnosis result. Selection means for selecting a combination of items, and M4 are control means for controlling selected hardware based on a measurement program.

Next, the operation will be explained.

First, the hardware group specifying means M1 specifies a hardware group having the functions necessary for executing the measurement based on the measurement program, and the hardware diagnosis means M2 causes each hardware in the specified hardware group to execute the measurement program. Determine whether it is possible. Next, the selection means M3 selects a combination of hardware H0 to H7 that can execute the program based on the diagnosis result and the measurement program, and the control means M4 controls the selected hardware based on the measurement program. .

FIG. 2 is a block configuration diagram of an electronic circuit measuring device according to an embodiment of the present invention. In FIG. This is a computer that edits and translates into object code that can be executed by the sequence controller 2a.The difference from conventional technology is that when translating into object code, it does not have a one-to-one correspondence with hardware 3 to 10. This point has not been adopted yet, but instead it corresponds to a general name that indicates the same function. However, this computer 1a may also be used in common with a sequence controller 2a. 2a is a sequence controller for decoding the execution program and controlling the measurement hardware 3 to 10. Functionally, this computer 1a is different from the conventional one. diagnoses hardware 3 to 10, stores the results, determines whether the hardware configuration necessary for the measurement execution program is available, determines the access method specific to each piece of hardware, and executes the hardware according to the measurement execution program. ware 3 to 10.

Further, FIG. 3 is a flowchart showing the operating sequence of the apparatus of this embodiment, and in the figure, Sl is a step for creating a measurement program in a tester language close to natural language, which is the same as in the conventional system. S2 translates the tester language,
In the step of converting into object code that can be executed by the sequence controller 2a, conventionally, this executable object code was made to correspond one-to-one with the hardware at this point, but in this embodiment, general In other words, we provide redundancy to names and, for example, numbers assigned in the order of appearance, so that they can be reorganized based on the results of hardware function diagnosis performed later.
Convert the measurement program created in the tester language into object code. S3 is the step of loading the measurement program into the sequence controller 2a as in the past, S4 is the step of decoding the loaded program and temporarily creating the necessary hardware configuration table, and S5 is the step of loading the measurement program into the sequence controller 2a. A step of diagnosing the function of the measuring device based on the configuration table of the hardware necessary for measurement created in S4, and S6 is a step of diagnosing the function of the measuring device based on the diagnosis result. Step S7 is to determine whether it is possible or not, based on the determination result in step S6, if it is measurable, fix the hardware configuration and set the address etc. for access specific to the hardware below. If measurement is not possible, the person operating the measuring device is notified of this in some form. S8 is a step for actually starting measurement.

Next, the effects will be explained.

Here, when measuring an existing electronic circuit, the second
When the hardware shown in the figure requires three measurement voltage sources, in the conventional method, for example, the measurement execution program specifies hardware 3, 4.5. In this case, since hardware 3.4.5 has a one-to-one correspondence between the hardware and the measurement execution program, for example, if hardware 5 fails and does not satisfy its function, measurement becomes impossible and the hardware Either the hardware 5 should be repaired, or the hardware 5 should be replaced with a functioning voltage source. However, in this embodiment, the hardware 5 is changed to the hardware 7 having normal functions by automatically changing the program.
This allows measurement even if the hardware 5 is abnormal.

For example, the power supplies (5 units are installed in this example) are connected to Pi, P2. ......Temporarily named Pb, its function is diagnosed by the sequence controller 2a, and PL, P2. P4°Pb determines that it is normal and creates a configuration table that stores the result. On the other hand, the execution program translated by Combiator l requires power from Pa, Pb, and Pc.
I'll leave it as that.

Here, if the function of a power supply is represented by P, a rule is set in advance that these power supplies have the same function, and the object code of the execution program is expressed as Pa-Pi, Pb-P2゜. Determine Pc-Pb.

Therefore, at this stage, there is a one-to-one correspondence between the measurement execution program and the hardware, and the measurement is executed.

In this way, according to this embodiment, each measurement hardware is configured to be able to be automatically repaired, so the operating rate of the device can be improved, and the electronic circuit is suitable for continuous operation such as unmanned operation. This has the effect of providing a measuring device.

In the above embodiment, the case where automatic repair is performed has been explained, but the basic principle of the present invention can also be applied to the case where different electronic circuits or a plurality of electronic circuits with the same function are measured at the same time, that is, when performing parallel measurement. In this case, a hardware configuration table required for measuring electronic circuit A and a configuration table required for measuring electronic circuit B are created respectively, and a determination is made as to whether or not measurement is possible. If possible, each will have its own hardware access means to enable execution of the measurement program.

〔Effect of the invention〕

As described above, the electronic circuit measuring device according to the present invention includes a diagnostic means for diagnosing whether or not a plurality of pieces of hardware for measurement are in a state that does not interfere with the execution of a measurement program, and a diagnostic device based on the diagnostic results. A selection means is provided to select viable hardware such as spare hardware, and in the event of a hardware failure, it can be automatically repaired. This improves the operating rate of the equipment and allows for unattended operation. There is an effect that it can be done.

[Brief explanation of the drawing]

FIG. 1 is an overall configuration diagram of an electronic circuit measuring device according to the present invention;
FIG. 2 is a block configuration diagram of an electronic circuit measuring device according to an embodiment of the present invention, FIG. 3 is a flowchart showing an overview of its operation, and FIG. 4 is a diagram showing the configuration of a conventional electronic circuit measuring device. . H6~H...Hardware, Ml...Hardware group specifying means, M2...Hardware diagnosis means, M3
... selection means, M4 ... control means, 1a ... computer, 2a ... sequence controller, 3 to 7
... Voltage source for measurement, 8... Signal source, 9... Voltage measuring device, lO... Control circuit, 11... Measurement head. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] (1) In an electronic circuit measuring device that measures electronic circuits based on a measurement program using multiple pieces of hardware, it includes multiple pieces of hardware for measuring the characteristics of the electronic circuit and the functions necessary to execute the above measurement program. hardware group specifying means for specifying a hardware group that has a plurality of hardware; hardware diagnostic means for determining whether each piece of hardware is in a state in which a measurement program can be executed; An electronic circuit measuring device comprising: a selection means for selecting a combination of hardware in which a measurement program can be executed; and a control means for controlling the selected hardware based on the measurement program.