JPH10253697A - Lamp-lighting testing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lamp-lighting testing apparatus whose reliability is high. SOLUTION: A lamp-lighting testing apparatus 21 is provided with a lamp-test control circuit 8 by which a plurality of lamps connected in a parallel state are turned on sequentially according to a predetermined division and with a lamp-current detection and comparison circuit 12 by which the total value of lamp currents flowing to the lamps, in every division, turned on by the lamp-test control circuit 8 is detected, by which the total value of the lamp currents is compared with a predetermined lamp-current set value and which outputs an abnormality signal when the total value deviates from a predetermined lamp-current tolerance. By this constitution, the operating safety of the lamp- lighting testing apparatus can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lamp lighting test apparatus for testing disconnection of a collective indicator lamp installed in a monitoring operation panel, a control panel, or the like.

[0002]

2. Description of the Related Art In a conventional lamp lighting test apparatus, for example, as shown in FIG. 6, when a lamp lighting contact 1 is closed, a lamp lighting contact amplification relay (relay) is excited, and a lamp display contact 22 operates. The collective indicator light is on. In addition, operating the lamp test switch 3 installed at the site turns on the collective indicator lamp 20 composed of the lamps L1 to L3 and L11 to L13 at once, and visually checks for lamp failure such as lamp out (inspection). )Was.

[0003]

In the conventional lamp lighting test apparatus, since the collective indicator lamp and the like are all turned on, the current consumption of the lamp temporarily becomes excessively large, so that the wiring must be thick. In addition, when the board surface is wide, the split lighting is used, but the operability is poor, and there is a risk that an oversight may occur in a visual check.

Further, the conventional lamp test circuit is for performing a visual check on site and cannot respond to a lamp test from a distance. For this reason, there is a risk that control or operation may be performed without erroneous recognition without performing a lamp test on site.

It is an object of the present invention to eliminate these dangers and to provide a reliable and safe lamp lighting test apparatus.

[0006]

A lamp lighting test apparatus according to the present invention includes a lamp test control circuit for sequentially lighting a plurality of lamps connected in parallel according to a predetermined section, and a lighting test by the lamp test control circuit. A lamp current detection circuit for detecting a total value of the lamp current flowing through the lamps for each of the divided sections; and a lamp current detection circuit for comparing the total value of the lamp current detected by the lamp current detection circuit with a predetermined lamp current set value. A lamp current comparison circuit that outputs an abnormal signal when the value deviates from the allowable lamp current value.

A lamp lighting test apparatus according to a second aspect of the present invention includes a lamp control suspending circuit for temporarily stopping the operation of the lamp test control circuit in response to an abnormal signal output from the lamp current comparing circuit. I have.

According to a third aspect of the present invention, there is provided a lamp test control circuit for sequentially lighting a plurality of lamps connected in parallel according to a predetermined division, and a division lit by the lamp test control circuit. A lamp current detection circuit for detecting a total value of a lamp current flowing through each lamp, and a lamp current value holding circuit for holding a total value of the lamp current detected by the lamp current detection circuit as a lamp current hold value; A lamp current comparison circuit that compares the total value of the lamp current detected by the current detection circuit with the lamp current hold value and outputs an excess signal when the total value of the lamp current exceeds the lamp current hold value. Features.

According to a fourth aspect of the present invention, there is provided a lamp lighting test apparatus for sequentially lighting a plurality of lamps connected in parallel in accordance with a predetermined first section, and thereafter changing the manner of division. , A lamp current detection circuit for detecting the total value of the lamp currents flowing through the lamps for each of the first and second sections lit by the lamp test control circuit, and the lamp current A lamp current comparison for comparing the total value of the lamp current detected by the detection circuit with a predetermined lamp current set value and outputting a deviation signal for each of the first and second sections when the total deviates from a predetermined lamp current allowable value. Circuit and a defective lamp identification circuit for identifying a lamp whose characteristic has been degraded from a deviation signal for each of the first and second sections output from the lamp current comparison circuit. It is characterized in that was example.

According to a fifth aspect of the present invention, there is provided a lamp lighting test apparatus in which a plurality of lamps connected in parallel are sequentially turned on in accordance with a predetermined first section, and thereafter the second section is obtained by changing the manner of division. , A lamp current detection circuit for detecting the total value of the lamp currents flowing through the lamps for each of the first and second sections lit by the lamp test control circuit, and the lamp current A lamp current comparison circuit that compares a total value of the lamp current detected by the detection circuit with a lamp current hold value and outputs an excess signal when the total value of the lamp current exceeds the lamp current hold value; and a lamp current comparison circuit. And a defective lamp specifying circuit for specifying a lamp having deteriorated characteristics from the deviation signal for each of the first or second sections output from the controller. It is set to.

According to a sixth aspect of the present invention, there is provided a lamp lighting test device comprising: a signal conversion device for converting an abnormal signal, an excess signal or a deviation signal into a BCD code; and a transmission device for transmitting the converted BCD code. Features.

[0012]

Next, an embodiment of a lamp lighting test apparatus according to the present invention will be described. In FIG. 1, when the lamp lighting contact 1 connected to the bus P has a closed circuit, when the normal display cancel (erase) signal 9 is not output, the contact 1b has a closed circuit. The constituent lamp L1 is turned on.

The on-site / far switch 2 is a switch for switching the control of the lamp lighting test device between on-site and far-off. The on-site output terminal of the on-site / far switch 2 has a on-site lamp test switch 3 and a on-site lamp lighting confirmation switch. 5 are connected in parallel. A far lamp test contact 4 is connected to a far output terminal of the on-site / far switch 2. The lamp lighting contact 1, the on-site / remote switch 2, the lamp test switch 3, the distant lamp test contact 4, and the on-site lamp lighting confirmation switch 5 are all not built in the lamp lighting test apparatus, but are connected outside the panel (connection). Wiring) Installed as a circuit.

The lamp test input circuit 6 is connected to the on-site / far switch 2, the lamp test switch 3, the far lamp test contact 4 and the on-site lamp lighting confirmation switch 5, and is a circuit for inputting external conditions required for the lamp test. And the lamp test control circuit 8 sends the lamp test condition
Is output.

In the case of claim 1, the lamp test control circuit 8 divides the plurality of lamps connected in parallel according to a predetermined division, for example, the lamps L1 to L3 according to the row direction of the collective indicator lamp 20 shown in FIG. A circuit for sequentially lighting L11 to L13 in order, and in the case of claims 5 and 6, a plurality of lamps connected in parallel are divided into a predetermined first section, for example, the collective indicator lamp 20 shown in FIG. Lights are sequentially turned on according to the row direction, and then the division method is changed.
According to the division, for example, the column direction of the collective indicator light 20 shown in FIG.
2, and has a function as a dual lamp test control circuit for sequentially lighting the lamps L3 and L13 in order. The lamp test condition signal 7 is input, the normal display cancel signal 9, the lamp test sequential lighting signal 10, and , A lamp test abnormal signal 19 such as an abnormal signal or an excess signal or a deviation signal.

The lamp current detection / comparison circuit 12 is as follows.
Has the functions of the lamp current detection circuit and the lamp current comparison circuit described in (1), is connected to the lamp test control circuit 8, and detects the total value of the lamp current flowing through the lamps for each of the segments lit by the lamp test control circuit 8. It has a function and a function of comparing the total value of the detected lamp currents with a predetermined lamp current set value and outputting an abnormal signal when the total deviates from a predetermined lamp current allowable value.

The lamp current detection / comparison circuit 12 receives the lamp current detection signal 11 from the lamp test control circuit 8 and outputs a lamp current comparison / judgment signal. The lamp current detection / comparison circuit 12 is connected to the collective display 20, and supplies the lamp current 13 flowing through the lamps of each section to the bus N.

The lamp current value holding circuit 16 is a third embodiment.
Or a function of comparing the total value of the detected lamp currents with the lamp current hold value and outputting an excess signal when the total value of the lamp currents exceeds the lamp current hold value. A lamp test control circuit 8 and a lamp current for identifying a lamp whose characteristic has deteriorated by cross-searching from a deviation signal for each first section and, for example, a deviation signal for each second section in the column direction; It is connected to the detection / comparison circuit 12 and receives the lamp current value update signals 15 and 17 and outputs the previous lamp current value 18 to the lamp current detection / comparison circuit 12.

Then, these lamp test control circuits 8,
The lamp current detecting / comparing circuit 12 and the lamp current value holding circuit 16 constitute a lamp test apparatus 21. FIG. 3 is a time chart (elapsed time chart) showing a lamp test result in a normal state. When the lamp test switch 3 is operated, a lamp test signal 3a is generated.
The normal display cancel signal 9 and the lamp test sequential lighting signal 10 change sequentially in the first vertical column, the second vertical column, the third vertical column, the third horizontal column, and the second horizontal column. Indicates that the lights are sequentially turned on for each column in the vertical and horizontal directions.

The broken line R and the lapse S show the time of the on-site lamp test, and the lapse S and the lapse T show the time chart in the case of the distant test. In the lamp test from a distance, both the vertical and horizontal lamps are sequentially turned on. Also,
In the on-site lamp test, the on-site lamp lighting confirmation switch 5 is pressed in the row where the lamp current value has failed or the next row is shifted after a preset timer time elapses.

FIG. 4 shows a time chart in the case where the current value is abnormal. The signal K indicates that the lamp current value in the second vertical column is abnormal due to the lapse of time longer than the lamp test sequential lighting signal 10. And the lamp confirmation signal 5 is output.

FIG. 5 is a flowchart for explaining the comparison and update of the lamp current. The lamp current detection circuit 12a incorporated in the lamp current detection / comparison circuit 12 is shown in FIG.
And the function of the lamp current comparison circuit 12c. 12
Reference numeral b denotes a judgment circuit for judging whether or not the previous lamp current is zero, detects the lamp current 13 by the lamp current detection signal 11, and stores the lamp current previous value signal stored in the lamp current value holding circuit 16. 18 and a lamp current value update signal 17 in addition to the lamp current comparison determination signal 14.
And a lamp current value update disable signal 17b is output.

The lamp test abnormality signal 19 is output only at the time of a lamp test from a distance, is converted into a signal such as a BCD (binary code decimal) and transmitted to a remote place. The failure is confirmed.

In the present embodiment, when performing a lamp test of a collective indicator lamp or the like, since the lamps are sequentially turned on one column at a time, it is necessary to reduce the lamp current consumption generated temporarily and make the wiring particularly thick. lost. In addition, since there is a sequential lighting stop function for stopping the sequential lighting at the failure location of the lamp, it is possible to prevent a visual check by the conventionally used divided lighting from being overlooked.

Further, in this embodiment, a lamp test can be performed from a distance, and a lamp failure can be grasped from a distance. Therefore, it is possible to prevent erroneous recognition even without performing a lamp test on site, and to improve reliability. It is possible to significantly improve safety.

[0026]

According to the present invention, the operational safety of the lamp lighting test device can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a lamp lighting test apparatus showing one embodiment of the present invention.

FIG. 2 is a front view showing an example of the collective indicator light of FIG.

FIG. 3 is an explanatory time chart showing a lamp test in a normal state.

FIG. 4 is a time chart explanatory diagram showing a lamp test when a lamp current is abnormal.

FIG. 5 is a flowchart illustrating comparison and updating of lamp currents.

FIG. 6 is a configuration diagram showing a conventional lamp lighting test apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lamp lighting contact 2 Field / remote contact 3 Field lamp test switch 4 Remote lamp test contact 5 Field lamp lighting confirmation switch 6 Lamp test input circuit 8 Lamp test control circuit 12 Lamp current detection / comparison circuit 16 Lamp current value hold circuit 20 Assembly Indicator light 21 Lamp test equipment

Claims (6)

[Claims] 1. A lamp test control circuit for sequentially lighting a plurality of lamps connected in parallel according to a predetermined section, and a total value of lamp currents flowing through the lamps for each section lit by the lamp test control circuit. And a lamp current detection circuit for detecting an abnormal signal when the total of the lamp currents detected by the lamp current detection circuit deviates from a predetermined lamp current allowable value by comparing with a predetermined lamp current set value. And a lamp current comparison circuit for outputting. 2. The apparatus according to claim 1, further comprising a lamp control suspension circuit for temporarily stopping the operation of the lamp test control circuit in response to the abnormal signal output from the lamp current comparison circuit. Lamp lighting test equipment. 3. A lamp test control circuit for sequentially lighting a plurality of lamps connected in parallel according to a predetermined section, and a total of lamp currents flowing through the lamps for each section which are turned on by the lamp test control circuit. A lamp current detection circuit for detecting a value, a lamp current value hold circuit for holding a total value of the lamp current detected by the lamp current detection circuit as a lamp current hold value,
A lamp current comparison circuit that compares a total value of the lamp current detected by the lamp current detection circuit with the lamp current hold value and outputs an excess signal when the total value of the lamp current exceeds the lamp current hold value; When,
A lamp lighting test device comprising: 4. A dual lamp test in which a plurality of lamps connected in parallel are sequentially turned on according to a predetermined first section, and then sequentially turned on again according to a second section obtained by changing the manner of the division. A control circuit; a lamp current detection circuit for detecting a total value of lamp currents flowing through the lamps for each of the first or second sections lit by the lamp test control circuit; and the lamp current detected by the lamp current detection circuit A lamp current comparison circuit that outputs a deviation signal for each of the first and second sections when the total value of the deviations deviates from a predetermined allowable lamp current value by comparing with a predetermined lamp current set value. A defective lamp specifying circuit for specifying a lamp having deteriorated characteristics from the deviation signal for each of the first or second sections output from the comparing circuit. Lighting test equipment. 5. A double lamp test in which a plurality of lamps connected in parallel are sequentially turned on according to a predetermined first section, and then sequentially turned on again according to a second section obtained by changing the manner of the division. A control circuit; a lamp current detection circuit for detecting a total value of lamp currents flowing through the lamps for each of the first or second sections lit by the lamp test control circuit; and the lamp current detected by the lamp current detection circuit And a lamp current comparison circuit that compares the lamp current hold value with the lamp current hold value and outputs an excess signal when the lamp current total value exceeds the lamp current hold value. A defective lamp identification circuit for identifying a lamp having deteriorated characteristics from the deviation signal for each of the first or second divisions. Test equipment. 6. A signal conversion device for converting the abnormal signal, the excess signal or the deviation signal to a BCD code, and a transmission device for transmitting the converted BCD code. The lamp lighting test device according to claim 6.