JP2909636B2 - Odor and smoke measurement device when heating materials - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for measuring the amount of odor and smoke generated when heating various substances (hereinafter referred to as materials).

(Prior art)

2. Description of the Related Art Conventionally, there has been known a fuming performance tester which heats a measuring material in order to measure the flame retardancy of a material such as plastic, measures the smoke concentration at that time, and obtains a fuming coefficient.

On the other hand, recently, in order to detect a fire at an early stage, attempts have been made to detect an odor generated before smoke is generated.

However, there was no suitable measuring device because the element for detecting odor itself was in the development stage.

[Problems to be solved by the invention]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has an object to obtain an odor and smoke measurement device for heating a material, which can measure how many degrees of odor the material emits at 0 ° C and how many smokes are emitted at 0 ° C. A sample stage for placing the measurement material in a container to which air is supplied,
It is characterized by comprising temperature control means for sequentially heating the measurement material on the sample stage, and an odor detector and a smoke detector for detecting odor and smoke generated at that time.

[Action]

The material is sequentially heated by the heating means in the container to which the clean air is supplied, and the temperature of the material at each stage and the outputs of the odor detector and the smoke detector at that time are recorded and displayed. In addition, since an odor detector and a smoke detector are provided,
It can be seen whether odor or smoke is mainly generated in the heating temperature range.

〔Example〕

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a main body of a measuring apparatus, which is provided with an intake port 2 and an exhaust port 3, and the intake port 2 is provided with an intake fan 4, a HEPA filter 5 as a dustproof filter, and an activated carbon 6 as an odor removing filter. ing.

Reference numeral 7 denotes a sample table, 8 denotes an odor generating container provided with an air inlet 9, and a heater 10, a thermocouple 11, an odor detector 12 using stannic oxide as a detecting element, and a particle counter as a smoke detector. 13 are provided.

14 is a temperature controller, which is a heater 10 as a heating means.
Temperature control means is constituted by the thermocouple 11 as the temperature detection means.

A control device 15 is connected to the odor detector 12, the particle counter 13, and the temperature controller 14.

The control device 15 includes a microprocessor 16, ROM 17 and RAM 18 as storage devices, an interface 19 for transmitting and receiving signals between the odor detector 12, the particle counter 13, and the temperature controller 14, a display 20, and an interface 21 thereof. You.

The ROM 17 includes a program storage area 171 in which a program for controlling the entire apparatus by the microprocessor 16 is stored, and a constant storage area 172 in which various constants T1S, T2S, T3L, T3U described later are stored.

The RAM 18 has a work area 181, a sensor data storage area 182 for storing detector output data, and a particle counter 1.
Area 1 for storing the output of the odor detector when the output rises rapidly
83 and an area 184 for storing the output of the particle counter 13 when the output of the odor detector 12 rises sharply.

The operation of the apparatus configured as described above will be described with reference to the flowchart of FIG. 3 (a, b).

The container 8 is opened, and the measurement material 22 is placed on the heater 10. Then, a start button of the control device 15 is pressed (not shown).

Then, the control device 15 is initialized, the intake fan 4 is started, and the ventilation in the device 1 is started. First, the outputs DATA10, DATA20 from the particle counter 13 and the odor detector 12 via the interface 19 (in FIG. DATA1 and DATA2 are temporarily stored in the work area 181 of the RAM 18 (steps 1 and 2). These data DATA10 and DATA20 are RO
The initial conditions T1S and T2S stored in the constant area 172 of M17 are compared with each other. If the output DATA10 of the particle counter 13 and the output DATA20 of the odor detector 12 are equal to or less than the initial conditions, the inside of the odor generating container 8 is in the test environment. The material temperature DATA30 (in the drawing, simply indicated as DATA3) is read from the thermocouple 11 of the temperature controller 14 (steps 3 and 4).

If it is determined that it is not in the test environment, the process returns from step 3 to step 1 and the operations of steps 2 and 3 are repeated.

Material temperature at that time determined to be in the test environment DATA30
Is compared with the temperature T3L stored in the constant area 172 of the ROM 17, and if it is equal to or lower than the temperature T3L, a start command is sent to the temperature controller 14 (steps 5 and 6).

As the material 22 is sequentially and linearly heated by the heater 10 of the temperature controller 14, the outputs DATA10 to DATA1n of the particle counter 13, the outputs DATA20 to DATA2n of the odor detector 12, and the material temperatures DATA30 to DATA3n at that time are provided at predetermined time intervals.
Are stored in the sensor data storage area 182 of the RAM 18 (steps 7 to 12).

Then, when the material temperature reaches the upper limit heating temperature T3U, a reset command is sent to the temperature controller 14 (steps 11 and 13).

Then, the control device 15 reads out the DATA10 and DATA11 of the particle counter 13 from the sensor data storage area 182 of the RAM 18 according to the program stored in the ROM 17,
f1 = DATA10−DATA11 is calculated. If Dif1 is smaller than the constant K1 stored in the constant storage area 172 of the ROM 17, DATA1
0 is replaced with DATA11, the next data DATA12 is read, Dif1 = DATA11−DATA12 is calculated, and this operation is repeated until Dif1> K1 (steps 14 to 18).

When the calculation result of step 15 becomes Dif1> K1, the output and temperature of the odor detector 12 at that time are stored in the storage area 183 of the RAM 18 (step 19).

Similarly, output data DATA20, DATA21,... Of the odor detector 12 in the sensor data storage area 182 of the RAM 18 are sequentially read, and Dif2 = DATA20-DATA21, Dif2 = DATA21-DATA22,.
Is repeated until Dif2> K2 (Steps 20 to 2
Four).

When the calculation result of step 21 becomes Dif2> K2, the output and temperature of the particle counter 13 at that time are stored in the storage area 184 of the RAM 18.

The data stored in the storage areas 182 to 184 of the RAM 18 are:
The information is displayed on the display 20 via the interface 21 (steps 25 and 26).

In the above embodiment, an odor detector using stannic oxide as a detection element has been exemplified. However, a quartz vibration type odor detector having an organic film formed on the surface may be used.

Although a particle counter has been exemplified as the smoke detector, a photoelectric smoke detector or a piezoelectric element may be used.

As described above, in the present invention, the temperature control means including the heating means for sequentially increasing the temperature of the measurement material and the temperature detection means for detecting the temperature, the odor detector for detecting the odor and smoke generated at that time, and the smoke Since it is equipped with a detector, it is possible to measure the change in odor and smoke generated from the material together with the temperature while increasing the temperature of the material step by step. There is an effect of obtaining a device for measuring odor and smoke at the time of material heating, which can measure whether smoke is generated at ° C.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of the device of the present invention, FIG. 2 is a block circuit diagram thereof, and FIG. 3 (a, b) is a flowchart for explaining the operation. DESCRIPTION OF SYMBOLS 1 ... Measurement device main body, 2 ... Intake port, 3 ... Intake port, 4 ... Intake fan, 5 ... HEPA filter, 6 ... Activated carbon, 7 ... Sample stand,
8 ... Odor generator, 9 ... Inlet, 10 ... Heater, 11 ... Thermocouple, 12 ... Odor detector, 13 ... Particle counter, 14 ...
Temperature controller, 15 ... Control device, 16 ... Microprocessor, 17 ... ROM, 18 ... RAM, 19 ... Interface, 20 ... Display, 21 ... Interface, 22 ... Material.

Continuation of the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) G01N 25/00-25/72 G08B 17/02-17/12 JICST file (JOIS)

Claims (5)

(57) [Claims] 1. A temperature control system comprising: a sample stage on which a measurement material is placed in a container to which clean air is supplied; heating means for sequentially increasing the temperature of the measurement material on the sample stage; and temperature detection means for detecting the temperature. A odor and smoke measuring device at the time of material heating, comprising: means, an odor detector for detecting odor and smoke generated at that time, and a smoke detector. 2. A material heating apparatus according to claim 1, further comprising a first storage area for storing the outputs of the odor detector and the smoke detector and the temperature of the thermocouple during the sequential heating by the temperature control means. Smell and smoke measuring device. 3. A second memory for storing the output and temperature of the odor detector when an odor exceeding the first constant is generated or the output and temperature of the smoke detector when the smoke exceeding the second constant is generated. 2. The odor and smoke measuring device according to claim 1, further comprising a storage area. 4. The odor detector according to claim 1, wherein the odor detector is a odor detector using stannic oxide as a detection element or a quartz vibration type odor detector having an organic film formed on the surface. And smoke measuring device. 5. An apparatus according to claim 1, wherein the smoke detector is a particle counter, a photoelectric detector, or a piezo-piezoelectric smoke detector.