JP2612341B2 - Power supply circuit inspection method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] For example, when a built-in processing device is operated by operating an operation key, a battery is used as a power source, and when an operation key is operated, power is supplied until a power supply is turned off after a certain time by a timer. The power supply circuit inspection method in a portable data storage device, in which a new operation is not accepted when the battery voltage falls below a specified value, the battery voltage in the portable data storage device falls below a specified value. The purpose is to be able to automatically and in a short time check the number of operations performed repeatedly before the voltage drops, until the battery voltage drops below the specified value and no new operation is accepted. A continuous operation mode section that automatically repeats the operation that consumes battery power and counts the number of operations is provided, and automatically adjusts the power usage period in a short time. It is disclosed that the information can be read.

[Industrial applications]

The present invention relates to a power supply circuit inspection method for a portable data storage device that uses a battery as a power source, consumes power when an operation key is operated, and does not accept a new operation when the voltage of the battery drops below a specified value. About.

[Conventional technology]

FIG. 3 is a block diagram of a conventional portable data storage device. In this device, a built-in processing device operates by operating an operation key, and consumes power until the power is turned off after a certain period of time by a timer. is there. In the figure, 10 is a display unit, 20 is an operation key unit, 30 is a battery, 40 is a processing unit, 41 is a reset unit, 42 is a test mode unit, 43 is a normal operation mode unit, 53 is a voltage drop detection unit, and 54 is a voltage drop detection unit. The sleep mode section.

The test mode section 42 is a section for testing whether or not the components of the device are functioning normally. The normal operation mode section 43 is a section for controlling normal operation. The sleep mode section 54 is an operation key section. This is a part for controlling a state in which a new operation by 20 is not accepted. Here, the normal operation is to perform processing such as storing data input by the operation key unit 20 in a memory and reading the data as necessary.

FIG. 4 shows the configuration of the processing executed by each of the above-mentioned parts. When the specific key (1) is pressed in the reset state, the test mode is set, and a test program for diagnosing whether or not the components of the apparatus function normally is executed, and a test result display is displayed. Here, when the specific key (2) is pressed, a normal operation state is set. In a normal operation, an operation of receiving data input by the operation key unit 20 and storing the data in a memory is executed. If the voltage of the power supply drops during normal operation, the sleep mode is entered in which no new operation is accepted, and the apparatus waits in the sleep mode until reset.

Generally, in this type of portable data storage device, 1
There are variations in the period until the battery voltage reaches a specified value or less depending on each used battery or each used internal circuit component. For this reason, it is desired to check the above-mentioned period in inspection at the time of product shipment.

However, in the conventional case, because of the above configuration, in order to check the period (or the number of times) until the battery voltage drops below the specified value, the operation key unit 20 under the normal operation is required. Was manually performed to count the number of operations.

[Problems to be solved by the invention]

As described above, conventionally, the tester manually checks the period during which the power supply is used, that is, the period (or the number of times) until the voltage of the battery drops below a specified value. For this reason, the inspection requires time and effort, and therefore, only a limited number of inspections can be performed at the time of factory shipment or the like. For this reason, based on a portable data storage device that operates normally and has a battery usage period within a normal range, it is necessary to comprehensively check that, for example, parts of the same lot as those used in the device are used. Judging from the point of view, only the individual portable data storage device could be inspected as being considered normal.

SUMMARY OF THE INVENTION An object of the present invention is to enable the use period of a power supply to be checked automatically and in a short time.

[Means for solving the problem]

FIG. 1 is a diagram illustrating the principle of the present invention. In the figure, reference numeral 10 is a display unit, 20 is an operation key unit, 30 is a battery, 40 is a processing unit, 41 is a reset unit, 42 is a test mode unit, 43 is a normal operation mode unit, 53
Represents a voltage drop detecting section, 54 represents a sleep mode section, and 70 represents a portable data storage device, which correspond to the conventional configuration shown in FIG.

The test mode section 42 is a section for testing whether or not the components of the device are functioning normally. The normal operation mode section 43 is a section for controlling normal operation. The sleep mode section 54 is an operation key section. This is a part for controlling a state in which a new operation by 20 is not accepted. In a normal operation, processing such as storing data input by the operation key unit 20 in a memory and reading the data as necessary is performed.

If the voltage of the battery 30 drops during the normal operation, the voltage drop detector 53 detects this and the device 70 enters the sleep mode. That is, a new operation is not accepted by the sleep mode unit 54.

In the present invention, portions 51 and 52 are added to the same configuration as the conventional case. That is, reference numeral 50 denotes a continuous operation mode unit, 51 denotes an automatic operation mechanism, and 52 denotes a counting unit.

The automatic operation mechanism 51 is a section for automatically and repeatedly performing an operation of storing data in a memory as when data is input by the operation key section 20, and the counting section 52 is a section for counting the number of operations.

The continuous operation mode section 50 includes an automatic operation mechanism 51 and a counting section 52.
And a sleep mode section 54, which automatically repeats the operation and counting until the voltage drops below a specified value. When the voltage drops, the sleep mode does not accept any new operation. It has a function to enter the mode.

[Action]

By pressing a predetermined operation key, for example, (A), a continuous operation mode is set. The operation and the count are automatically repeated. When the voltage drops below a specified value, a sleep mode is set. The count value at that time is displayed. The person performing the inspection must use a specific operation key (A)
, And reading the count value as a result, the use period of the power supply can be easily checked.

〔Example〕

FIG. 2 shows a processing configuration of the embodiment of the present invention.
,... Correspond to FIG. 4 and are the same as described with reference to FIG.
The following processing will be described.

In the reset state, when a specific key, for example, (A) is pressed, a continuous operation mode is set. In the continuous operation mode, first, the contents of the counting section 52 are cleared to zero, then the display of the count value, the check of voltage drop, the operation of consuming power once, and the counting up are performed. . Here, if a specific key, for example, (B) is pressed, a normal operation state is set. Then, if reset, the state is reset, but otherwise, the other processing is repeatedly executed. When the voltage drop is detected, the count value at that time is displayed and the apparatus stands by in the sleep mode, so that the use period of the power supply can be known from the count value.

〔The invention's effect〕

As described above, according to the present invention, in a device that consumes power by operating the operation key unit, it is possible to automatically and quickly check the use period of the power supply.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the principle of the present invention, FIG. 2 is a diagram showing a processing configuration of an embodiment of the present invention, FIG. 3 is a diagram showing a configuration of a conventional portable data storage device, and FIG. Show. In the figure, 10 is a display unit, 20 is an operation key unit, 30 is a battery, 40 is a processing unit, 41 is a reset unit, 42 is a test mode unit, 43 is a normal operation mode unit, 50 is a continuous operation mode unit, and 51 is a continuous operation mode unit. Automatic operation mechanism, 52
Represents a counting section, 53 represents a voltage drop detecting section, 54 represents a sleep mode section, and 70 represents a portable data storage device.

Claims (1)

(57) [Claims] An operation unit comprising a display unit, an operation key unit, and a processing unit having a data processing unit, wherein a battery is used as a power source and power is supplied when the operation key unit is operated. And the sleep mode unit (54) does not accept a new operation when the voltage drop detection unit (53) detects that the voltage of the battery (30) is equal to or lower than a specified value. In the storage device (70), an automatic operation mechanism that automatically repeats an operation of consuming the power of the battery a plurality of times by the processing unit setting the same result as the result of operating the operation key unit (20), a plurality of times. (51), a counting section (52) for counting the number of times of the operation, and the voltage drop detecting section (53) for detecting a drop in battery voltage.
And when the voltage drop detecting section (53) detects that the battery voltage has dropped, the sleep mode section (54) stops the automatic operation of the automatic operation mechanism (51) and stops accepting a new operation. ), And a continuous operation mode section (50) having the following. As a result of automatically and repeatedly performing the operation and the count, when the battery voltage falls below a specified value, a state in which a new operation is not accepted occurs. A power supply circuit inspection system characterized in that the count value of the counting section (52) at that time is checked, and the power supply usage period is checked based on the count value.