JPH09305874A - Tester for smoke sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tester for smoke sensor which can improve its test accuracy by setting the quantity of aerosol at the fixed value necessary for the test for the gas, etc., that is used for the operation test of a smoke sensor. SOLUTION: This tester includes an aerosol storage part 3 which encloses the aerosol, a sensor storage part 4 which covers a smoke sensor 5, i.e., a tested body and is filled with the discharged aerosol, a density sensor 10 which is included in the part 4, and a control circuit part 11 which receives the signal from the sensor 10. The sensor 10 detects the density of aerosol in the part 4 and sends a signal to the part 11 to perform the discharge control of aerosol and also to keep the aerosol density under an allowance level in the part 4. In such a constitution, the test accuracy of the tester is improved and also the aerosol consumption can be suppressed and controlled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tester used for an operation test of a smoke detector used in automatic fire alarm equipment and the like.

[0002]

2. Description of the Related Art A conventional smoke detector tester has been developed as follows:
Like the cylinder type smoke detector tester described in Japanese Patent No. 97791, the smoke detector that is the DUT is directly covered with the tester,
The user had to release the gas for a certain period of time.

[0003]

However, in the above conventional configuration, the smoke quality (hereinafter, referred to as the smoke quality) provided in the vicinity of the smoke sensor is
Since there is no means for suppressing and controlling the amount of aerosol, the judgment of the amount of aerosol used is left to the user, and the amount of aerosol was not constant. For this reason, the amount of aerosol originally required for the smoke detector operation test was not released, so the smoke detector did not operate, the normal smoke detector was judged to be abnormal, and the amount of aerosol emitted was large, so it originally operated. There was a risk that the smoke sensor, which does not operate at the desired aerosol concentration, would operate and be judged to be normal.

The present invention solves the above-mentioned conventional problems, and provides a smoke detector tester capable of improving the accuracy of smoke detector test and controlling the amount of aerosol used. With the goal.

[0005]

In order to achieve the above object, a smoke detector tester according to the present invention covers a smoke accommodating portion containing an aerosol and a smoke detector as an object to be tested. A sensor housing part filled with the aerosol discharged from the housing part, and provided in the sensor housing part,
A concentration sensor for measuring the aerosol concentration in the sensor housing portion, a control circuit portion for receiving a signal from the concentration sensor, and a delivery device for sending the aerosol discharged from the smoke substance housing portion to the vicinity of the intake port of the smoke sensor. A smoke unit, an opening / closing unit that opens and closes the smoke sending unit, and a power supply unit that energizes the control circuit unit, and the control circuit unit is configured to measure the aerosol concentration in the sensor storage unit measured by the concentration sensor. The opening / closing control of the opening / closing section is performed according to the above, and the aerosol concentration in the sensor housing section is kept within an allowable range in which an accurate test can be performed. As a result, the smoke sensor test accuracy can be improved, and the amount of aerosol used can be suppressed and controlled.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention covers a smoke accommodating portion containing an aerosol and a smoke detector as a test object, and stores the sensor filled with the aerosol discharged from the smoke accumulating portion. And a part provided in the sensor storage part,
A concentration sensor for measuring the aerosol concentration in the sensor housing portion, a control circuit portion for receiving a signal from the concentration sensor, and a delivery device for sending the aerosol discharged from the smoke substance housing portion to the vicinity of the intake port of the smoke sensor. A smoke unit, an opening / closing unit that opens and closes the smoke sending unit, and a power supply unit that energizes the control circuit unit, and the control circuit unit is configured to measure the aerosol concentration in the sensor storage unit measured by the concentration sensor. The opening / closing control of the opening / closing section is performed according to the above, and the aerosol concentration in the sensor housing section is kept within an allowable range in which an accurate test can be performed. As a result, the smoke sensor test accuracy can be improved regardless of the user, and the amount of aerosol used can be suppressed and controlled without waste.

Further, a smoke accommodating portion containing an aerosol and a smoke accommodating portion, which covers the smoke sensor to be tested, and is filled with the aerosol discharged from the smoke accumulating portion, and the sensor accommodating portion. A detection sensor provided inside the unit for detecting the presence or absence of a smoke sensor as a device under test in the sensor storage unit, a control circuit unit receiving a signal from the detection sensor, and a discharge from the smoke quality storage unit. A smoke sending section for sending the aerosol to the vicinity of the intake port of the smoke detector, an opening / closing section for opening and closing the smoke sending section, and a power supply section for energizing the control circuit section, and the control circuit section, The opening / closing control of the opening / closing unit is performed according to the presence or absence of the smoke sensor detected by the detection sensor, and thereby, the emission of the aerosol is started only by storing the smoke sensor in the sensor storage unit. As a result, regardless of the user, since the aerosol is not emitted until the smoke detector is housed in the sensor housing, it is possible to improve the efficiency of the smoke sensor test and prevent waste of the aerosol.

[0008] Further, a smoke accommodating portion containing an aerosol and a smoke accommodating portion, which covers the smoke sensor to be tested, and is filled with the aerosol discharged from the smoke accumulating portion, and the sensor accommodating portion. A concentration sensor for measuring the aerosol concentration in the sensor storage part and a detection sensor for detecting the presence or absence of the smoke detector in the sensor storage part, and a signal from the concentration sensor and the detection sensor. A control circuit part for receiving, a smoke sending part for sending the aerosol emitted from the fumes storage part to the vicinity of the intake port of the smoke detector, an opening / closing part for opening and closing the smoke sending part, and energizing the control circuit part. The control circuit unit controls opening / closing of the opening / closing unit according to signals from the concentration sensor and the detection sensor. Auto at the beginning of the release of the aerosol, and an aerosol concentration in the sensor housing part can be kept within an allowable range that allows the accurate testing.

The test gas filled in the gas cylinder can be used as the aerosol, and the amount of released gas can be controlled when the gas cylinder is housed in the fumes container.

Further, by providing a partition plate for changing the size of the sensor housing portion in accordance with the smoke sensor to be tested, the aerosol concentration in the sensor housing portion can be quickly set to the set concentration.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described below with reference to FIG. In this embodiment, the aerosol is a generally known cylinder type test gas.

In FIG. 1, 1 is a gas cylinder filled with a test gas, 2 is an opening / closing part for opening and closing the gas cylinder 1, 3 is a fumes container for holding the gas cylinder 1 and the opening / closing part 2, and 4 is a cover. A sensor housing for covering the smoke sensor 5 as a test object and filling the gas discharged from the opening / closing section 2, 6 is a power supply section for supplying energy to this device, and 7 is an on / off control of power supply at hand. A hand switch, 8 is a smoke sending unit that sends the gas released from the gas cylinder 1 to the vicinity of the intake port of the smoke detector 5, 9 is a detection sensor that detects that the smoke detector 5 has entered the detector housing unit 4, 10 is a concentration sensor for detecting the concentration of the gas filled in the sensor storage unit 4, 11 is a control circuit unit for controlling the opening / closing unit 2 according to signals from the detection sensor 9 and the concentration sensor 10, and 12 is a partition plate, With smoke detector 5 Performing vertical movement in response to the elastic body 13 to be 押勢.

Next, a series of operations of the smoke detector tester of this embodiment will be described. When the user brings the smoke detector tester close to the smoke detector 5 and the smoke detector 5 enters the detector housing 4, the detection sensor 9 detects the smoke detector 5 and sends a signal to the control circuit unit 11. . Along with this, the control circuit unit 11 opens the opening / closing unit 2 so that the smoke sending unit 8 communicates from the smoke quality housing unit 3 to the sensor housing unit 4. Then, the gas of the gas cylinder 1 is sent to the vicinity of the intake port of the smoke sensor 5 in the sensor housing portion 4 by the smoke sending portion 8. At this time, when the partition plate 12 is pushed by the smoke sensor 5, the elastic body 13 is urged to move the partition plate 12, but since the partition plate 12 is in contact with the smoke sensor 5, it is always in the sensor housing portion 4. Has the smallest volume. The gas concentration of the sensor housing 4 which keeps the minimum size in this way is monitored by the concentration sensor 10, and when the concentration exceeds the set range, the control circuit unit 11 closes the opening / closing unit 2, Prevent further gas release. Further, while the detection sensor 9 is detecting the smoke detector 5, the detector storage 4
When the gas concentration inside becomes less than the set concentration, the control circuit unit 1 is restarted.
1 opens the opening / closing part 2 to release the gas. When the user finishes the test and removes the smoke detector test device from the smoke detector 5, the detection sensor 9 stops detecting the smoke detector 5, and the control circuit unit 11 closes the opening / closing unit 2 in response to this signal. Then, the test of the smoke detector 5 is completed.

In this embodiment, the cylinder type test gas is used as the aerosol, but it goes without saying that it may be composed of water vapor or smoke of incense stick.

[0015]

As is apparent from the above-described embodiments, according to the present invention, since the amount of aerosol emitted is suppressed and controlled by using the detection sensor and the concentration sensor, the smoke sensor test accuracy can be improved regardless of the user. In addition, the amount of aerosol used can be suppressed and controlled without waste.

Further, by providing the smoke sending section for directly sending the aerosol discharged from the smoke-containing unit to the vicinity of the intake port of the smoke detector as the DUT, the aerosol can be sent to the smoke detector without waste. .

Further, by providing a partition plate for changing the size of the sensor housing portion in accordance with the smoke sensor to be tested, the aerosol concentration in the sensor housing portion can be quickly set to the set concentration.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a smoke detector tester according to an embodiment of the present invention.

[Explanation of symbols]

 1 Gas cylinder 2 Opening / closing part 3 Fume storage part 4 Sensor storage part 5 Smoke detector 6 Power supply part 7 Hand switch 8 Smoke sending part 9 Detection sensor 10 Concentration sensor 11 Control circuit part 12 Partition plate 13 Elastic body

Claims (5)

[Claims] 1. A fumes container for enclosing fumes, a fumes detector for covering the fumes, which is the object to be tested, and filling the fumes emitted from the fumes container inside. A concentration sensor provided in the sensor storage unit for measuring the fumes concentration in the sensor storage unit, a control circuit unit receiving a signal from the concentration sensor, and the fumes emitted from the fumes storage unit The smoke sending unit for sending to the vicinity of the intake port of the smoke detector, an opening / closing unit for opening and closing the smoke sending unit, and a power supply unit for energizing the control circuit unit, the control circuit unit,
A smoke detector tester, which controls the opening and closing of the opening and closing unit according to the concentration of fumes in the detector housing measured by the concentration sensor. 2. A fumes container for enclosing the fumes, a fumes detector for covering the fumes, which is the object to be tested, and filling the fumes emitted from the fumes container therein. A detection sensor provided in the sensor storage unit for detecting the presence / absence of the smoke detector in the sensor storage unit, a control circuit unit receiving a signal from the detection sensor, and emitted from the smoke quality storage unit. The control circuit unit includes a smoke sending unit that sends smoke quality to the vicinity of the intake port of the smoke sensor, an opening / closing unit that opens and closes the smoke sending unit, and a power supply unit that energizes the control circuit unit. A smoke detector tester, which controls the opening and closing of the opening and closing unit according to the presence or absence of the smoke detector detected by a detection sensor. 3. A fumes container for enclosing fumes, a detector housing for covering the smoke detector, which is the device under test, and filling the fumes emitted from the fumes container therein. A concentration sensor provided in the sensor storage unit for measuring the concentration of fumes in the sensor storage unit and a detection sensor for detecting the presence or absence of the smoke detector in the sensor storage unit, the concentration sensor and the detection sensor. A control circuit section for receiving a signal from the smoke-storing section, a smoke-sending section for sending the smoke quality discharged from the smoke-storing section to the vicinity of the intake port of the smoke detector, an opening / closing section for opening and closing the smoke-sending section, A smoke detector tester, comprising: a power supply unit for energizing a control circuit unit, wherein the control circuit unit controls opening / closing of the opening / closing unit according to signals from the concentration sensor and the detection sensor. 4. The test device for a smoke sensor according to claim 1, wherein a test gas filled in a gas cylinder is used as the fumes, and the gas cylinder is housed in a fumes container. 5. The smoke detector test device according to claim 1, further comprising a partition plate for changing the size of the detector storage portion according to the smoke detector to be tested.