JPS6373340A - Power source controller - Google Patents

Abstract

PURPOSE:To affirm the normality of a hardware and to facilitate an inspection by providing an inspection mode input means and an inspection mode program in a power source controller which uses a microprocessor. CONSTITUTION:A power source is usually controlled by an administration pro gram in a ROM 6. Meanwhile, if the signal of an inspection mode is given to an input port 2 from an inspection mode specification circuit 1, the program is switched to an inspection program by a switching program. The microprocessor 3 executes an action according to the inspection program. There fore if the inputs in plural combinations are given to the input port 2 from an input circuit for test through input terminals I1-Im, the outputs in plural combinations can be obtained from output terminals O1-On. By making indica tion by such as a lamp, etc., installed for the outputs correspond to a table which is previously made into, the normality of the hardware can be affirmed. Thus the inspection can be easily executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power supply control device, and particularly to a program control type power supply control device using a microprocessor.

[Conventional technology]

BACKGROUND ART Recently, power supply control devices that control power supply devices for specific electronic devices are equipped with a built-in microprocessor. Such a power supply control device receives signals for instructing power-on and power-off, etc. from the higher-level device of the electronic equipment, as well as signals for confirming power-on, reporting a failure, etc. from the controlled power supply device. It sends out the necessary output depending on the content, and generally the output is sent out in a predetermined sequence. That is, the built-in microprocessor analyzes input signals according to a stored operating program and operates the output circuit in a predetermined sequence.

Therefore, conventionally, inspections during the manufacturing of power supply control devices such as This is done by periodically repeating the input given to the output terminal and observing the waveform with an oscilloscope connected to the output terminal.

[Problem that the invention seeks to solve]

However, with conventional power supply control devices, there is no way to test it by giving input from the pseudo-circuit as described above and checking whether the expected output is obtained, and instead outputting the planned output in sequence. There are problems such as the time it takes to obtain all the output data, and the need to take time into consideration to check whether the data is correct, which is cumbersome. . Moreover, since the control is program control, sequence errors are not possible other than program errors.Assuming there are no errors in the program, it would be better to check whether there is an error in the hardware or not. The disadvantage is that it cannot be determined unless the sequence is examined by multiplying by .

SUMMARY OF THE INVENTION An object of the present invention is to provide a power supply control device that eliminates the above-mentioned problems and drawbacks and allows easy inspection by confirming the normality of the hardware without checking the sequence operation.

[Means for solving problems]

The present invention provides a power supply control device using a microprocessor, including a test mode input means for specifying a test mode to one of the input signals, a test program that creates a combination of output signals from a combination of input signals, and a test mode designation. and a mode switching program that switches from the operating program to the inspection program in response to the received data.

With the above configuration, by switching to the inspection mode and applying multiple combinations of inputs from the pseudo input circuit, it is possible to obtain multiple different combinations of outputs from the output terminal, and the lamps etc. The normality of the hardware can be checked by matching the display with a pre-made table.

〔Example〕

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

FIG. 1 is a block diagram of an embodiment of the present invention, in which m input terminals I! are connected to a host device and a controlled power supply device. ,
n output terminals 0.I2-Im connected to the power supply device and the operation display board; ．． 02-On is shown. This power supply control device includes an inspection mode designation circuit 1, an input port 2 that receives signals from the inspection mode designation circuit 1 and signals from m input terminals, a microprocessor 3 connected to the input port 2, and a microprocessor 3 connected to the input port 2. It has an output port 4 connected to the processor 3, a drive circuit 5 having n buffer amplifiers connected to each of the n outputs of the output port 4, and a ROM 6 connected to the microprocessor 3. configured. Further, the ROM 6 stores an operation program used during normal operation, an inspection program, and a switching program for switching between the operation program and the inspection program.

In the above configuration, normally the operation program
As in the conventional case, a predetermined output is given to the power supply device in response to a signal given to the input boat 2, or a lamp on an operation display board is turned on.

By the way, when the test mode designation circuit 1 is operated and a test mode signal is applied to the input port, the microprocessor 3 operates according to the test program. In addition,
When performing an inspection, a test input circuit that can give a signal is connected to each of the input terminals I, I2 to Im, and a lamp or the like that can make the output visible is connected to each of the output terminals 01.02 to On. Ru.

FIG. 2 is a layout diagram showing an example of conversion data that is part of the inspection program stored in the ROM 6. The conversion data corresponds to each of a plurality of input data given to the input board from the test input circuit. The output data of the output port is set.

These multiple input data and output data are combined so that V″1″ and v′0″ appear at least once for one boat, and the operation and recovery of any circuit can be confirmed. It is sufficient if it is set as follows.

FIG. 3 is a flowchart mainly showing the inspection program stored in the OM6.

Referring to FIGS. 2 and 3 below, the inspection operation will be explained. First, the microprocessor 3 checks whether there is an inspection mode signal from the input port (step ■).
, if it is the test mode, the input data of the input terminals 1 to Im given by the test input circuit are read from the input board 2 (step 2). Next, the memory address of the conversion data is set (step (2)), and the data in that memory is read (step (2)). Next, the input data and the data in the memory are compared (step (2)), and if they do not match, 1 is added to the set memory address (step (2)), and the process returns to step (2). Steps ■, ■, and ■ are repeated, and when a match is obtained, 100 is added to the memory address where the match was found (step ■), and the data in the memory at this memory address is read (step ■).
This data is applied to the output port (step ■).

Therefore, an output corresponding to this output is outputted via the drive circuit, and a lamp connected for inspection is lit. Then, after step (■), the process returns to step (2) again. Note that if the test mode is not set in step (2), the operation program is executed (step O), and this program also returns to step (2) after completing the series of steps.

Therefore, the inspector has a list corresponding to the conversion data shown in Figure 2, inputs a test signal corresponding to the input data from the test input circuit, and outputs multiple output data to the lamp connected to the output terminal. By comparing whether the input data is correct and sequentially performing this operation on all input data, the normality of the hardware can be confirmed.

In the above embodiments, the test input circuit and the lamps connected to the output terminals are operated manually, but even if these are all configured by electric circuits and automated, I don't care.

〔Effect of the invention〕

As described above in detail, the present invention has the effect of facilitating inspection in a power supply control circuit using a microprocessor by eliminating conventional time-related measurements. .

Furthermore, by automating the externally connected test circuit, it is possible to achieve even faster testing.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention, and FIG. 2 is a block diagram of an embodiment of the present invention.
FIG. 3 is a layout diagram of an example of conversion data that is a part of the inspection program stored in the ROM shown in the figure, and is a flowchart mainly showing the inspection program stored in the ROM shown in FIG. 1...Inspection mode designation circuit, 2...Input board, 3...Microprocessor, 4...
...Output port, 5...Drive circuit, 6
...ROM0 Rin 2 figure

Claims (1)

[Claims] In a power supply control device using a microprocessor that receives input signals from a host device and a controlled device and sends control signals to the controlled device, an inspection mode input means for supplying an inspection mode designation signal to one of the input signals; a test program that creates a combination of output signals from a combination of input signals stored in a program memory of the microprocessor;
A power supply control device comprising: a mode switching program for switching between an operation mode and an inspection mode in response to the inspection mode designation signal stored in a program memory of the microprocessor.