Sensing system

Abstract

The objective is to obtain a detection system that can more reliably detect unexpected odors within a monitored area. [Solution] The system includes an odor detection unit (1) that detects odors occurring in the monitoring area (200), patterns the detected odors, and transmits them as an odor detection signal, and a control unit (3) that receives the odor detection signal transmitted from the odor detection unit (1). The control unit (3) determines whether the odor detection signal transmitted from the odor detection unit (1) is within the range of a pre-registered normal pattern.

Description

Technical Field

[0001] The present disclosure relates to a sensing system that detects the early occurrence of a fire or a sign of a fire by sensing an odor occurring in a monitoring area.

Background Art

[0002] There is a need to detect the occurrence of a fire earlier or detect a sign of a fire earlier. In order to detect the early occurrence of such a fire and the sign, it has been proposed to provide an odor sensing unit in a monitoring area and cooperate this with a fire detector.

[0003] Further, as a fire alarm cooperating with an odor sensing unit, there are the following (for example, see Patent Document 1). When the fire alarm according to Patent Document 1 senses smoke, it determines whether this smoke is due to smoking or is smoky of a fire by using an odor sensing unit.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] When using the fire alarm according to Patent Document 1, it is necessary to previously store in the fire alarm a pattern of an odor to be detected, such as an odor during smoking. Therefore, when various odors are assumed to occur in a monitoring area, it is necessary to previously investigate all the assumed odors as detection targets and store them in the fire alarm.

[0006] Further, when using the fire alarm according to Patent Document 1, when an unexpected odor occurs, it cannot capture this and perform alarm control.

[0007] This disclosure was made to solve the above-mentioned problems and aims to provide a sensing system that can more reliably detect the occurrence of unexpected odors within a monitoring area. [Means for solving the problem]

[0008] The sensing system according to this disclosure comprises an odor sensing unit that senses odors occurring in a monitoring area, patterns the sensed odors, and transmits them as an odor sensing signal, and a control unit that receives the odor sensing signal transmitted from the odor sensing unit, the control unit determining whether the odor sensing signal transmitted from the odor sensing unit is within the range of a pre-registered normal pattern. [Effects of the Invention]

[0009] According to this disclosure, a sensing system can be obtained that can more reliably detect the occurrence of unexpected odors within a monitoring area. [Brief explanation of the drawing]

[0010] [Figure 1] This figure shows the overall configuration of the sensing system in Embodiment 1 of the present disclosure. [Figure 2] This figure illustrates the odor patterns in Embodiment 1 of the present disclosure. [Figure 3] Figure 1 is a block diagram showing the configuration of the control unit. [Figure 4] This flowchart shows the process for registering a normal operating pattern in the control unit shown in Figure 3. [Figure 5] This is a flowchart showing the process for changing the sensing sensitivity in the control unit shown in Figure 3. [Modes for carrying out the invention]

[0011] Hereinafter, preferred embodiments of the sensing system of this disclosure will be described with reference to the drawings. The sensing system described herein, in addition to monitoring the generation of smoke or heat using a fire detection unit, also monitors odors using an odor detection unit. Furthermore, a technical feature of the sensing system described herein is that it determines whether or not an odor other than the normal odor present in the monitoring area has been detected by the odor detection unit.

[0012] This allows for more reliable detection of odors other than normal odors as unexpected and unique odors. In other words, the detection system according to this disclosure is not primarily intended to identify odor patterns that cause fires, but rather to quickly detect conditions that deviate from normal odors, using normal odors that can be easily obtained in the installation environment of the detection system as a reference, thereby enabling earlier detection of changes in conditions caused by odors specific to each installation environment.

[0013] Furthermore, a technical feature of this system is that if an odor other than the normal odor is detected by the odor detection unit, an odor detection alarm will be issued, and / or the detection sensitivity of the fire detection unit will be increased. This allows for earlier detection of a fire by increasing the detection sensitivity of the fire detection unit when an unusual odor is present in the monitoring area.

[0014] Embodiment 1. Figure 1 is a diagram showing the overall configuration of the sensing system in Embodiment 1 of this disclosure.

[0015] The sensing system 100 comprises an odor sensing unit 1, a fire sensing unit 2, and a control unit 3.

[0016] The fire detection unit 2 is installed in a monitoring area 200, such as a room, and monitors whether or not smoke or heat is being generated. The fire detection unit 2 also has a function to change the sensitivity of smoke or heat detection based on control by the control unit 3.

[0017] As such a fire detection unit 2, an ultra-high sensitivity smoke detector installed in a server room, a clean room, etc. can be adopted. Here, the ultra-high sensitivity smoke detector is laid in the monitoring area 200 and includes a pipe 2A provided with a large number of holes in its structure, and constantly sucks air from these holes to optically monitor the ambient air of the entire area.

[0018] Also, as the fire detection unit 2, it is also possible to adopt an R-type analog detector that senses smoke or heat.

[0019] The odor detection unit 1 is an odor sensor installed in the monitoring area 200, and monitors the odor generated in the monitoring area 200. In the first embodiment, as an example, a crystal oscillator type sensor provided with a transducer and a plurality of types of sensitive films can be adopted as the odor detection unit 1.

[0020] The odor detection unit 1 transmits the pattern of the odor detected by each sensitive film to the control unit 3 as an odor detection signal.

[0021] Based on the detection result by the odor detection unit 1, the control unit 3 variably controls the detection sensitivity by the fire detection unit 2. Also, based on the detection result by the odor detection unit 1, the control unit 3 sounds an alarm sound from its own sound part, displays on its own display part, or transfers a signal based on the detection result to other devices not shown in the figure to perform an alarm or the like by other devices. The control unit 3 is constituted by, for example, a controller mounted on a fire receiver.

[0022] The control unit 3 receives the odor detection signal from the odor detection unit 1. Then, the control unit 3 determines whether or not the received odor detection signal is within the range of the pre-registered normal pattern.

[0023] Furthermore, if the odor detection signal transmitted from the odor detection unit 1 is outside the normal pattern range, the control unit 3 will issue an odor detection alarm and change the detection sensitivity of the fire detection unit 2 to high sensitivity. Note that the detection sensitivity of the fire detection unit 2 may also be changed manually by the control unit 3. In addition, if the control unit 3 does not issue an alarm from the fire detection unit 2 after a predetermined time has elapsed since the odor detection unit 1 received a signal outside the normal pattern range, the control unit 3 will determine that the odor is not of fire / fire precursor origin and will store it as an odor of a non-fire cause.

[0024] Furthermore, the odor detection unit 1 shall be positioned in a location that can cover the entire monitoring area, with one or more units installed.

[0025] Figure 2 is a diagram illustrating the odor patterns in Embodiment 1 of this disclosure. Here, the normal odor pattern of the monitoring area 200 is shown in Figure 2(A), the fire-related odor pattern is shown in Figure 2(B), and the non-fire-related odor pattern is illustrated in Figure 2(C).

[0026] The odor sensing unit 1 is equipped with 16 types of sensitive membranes, each with a different affinity for odor substances. The odor sensing unit 1 captures the amount of change in each of these 16 types of sensitive membranes during each monitoring cycle and acquires it as detection values ​​for 16 channels.

[0027] In Embodiment 1, the pattern formed by combining the detection values ​​of these 16 channels is referred to as the odor pattern or simply the pattern.

[0028] If the monitoring area 200 is a server room, clean room, etc., there is little human traffic, and the odor is stable under normal conditions. Therefore, the odor pattern detected by the odor sensing unit 1 will have low values ​​for all 16 channels, as shown in Figure 2(A), and the odor pattern will also be constant. On the other hand, if a fire or fire precursor (e.g., melting of electrical wire insulation) occurs in the monitoring area 200, or if a non-fire odor source (e.g., inflow of outside air due to human entry or opening and closing of doors) is present in the monitoring area 200, certain channels will change significantly, as shown in Figures 2(B) and 2(C).

[0029] The control unit 3 stores a normal pattern in advance, as shown in Figure 2(A). If the control unit 3 obtains an unusual pattern from the odor detection unit 1 that is different from the odors that occur under normal conditions, as shown in Figure 2(B) or Figure 2(C), it determines that some kind of abnormality has occurred, issues an odor detection alarm, and increases the detection sensitivity of the fire detection unit 2.

[0030] Furthermore, even if the odor pattern detected is initially unknown, subsequent analysis and investigation may allow for the identification of whether the odor is fire-related or non-fire-related. In Embodiment 1, odor patterns that have been identified as either fire-related or non-fire-related are stored in the control unit 3 as known odor patterns. This storage of odor patterns may be configured to automatically retain them as fire-related if the fire detection unit 2 detects a fire after an odor detection alarm is issued, and as non-fire-related if the fire detection unit 2 does not detect a fire after a predetermined time has elapsed.

[0031] The control unit 3 then increases the detection sensitivity of the fire detection unit 2 if the odor pattern received from the odor detection unit 1 is a known pattern of fire-related odor. On the other hand, the control unit 3 does not increase the detection sensitivity of the fire detection unit 2 if the odor pattern obtained from the odor detection unit 1 is a known pattern of non-fire-related odor. In this case, the odor detection alarm will not be triggered.

[0032] As a result, the control unit 3 can individually vary the detection sensitivity of the fire detection unit 2 if an odor that has already been identified is present within the monitoring area 200.

[0033] Furthermore, with respect to non-fire odor patterns, when the detection system 100 related to this disclosure is put into actual operation, these patterns, although outside the range of normal patterns, can be recorded as odor patterns that are not fire-causing. The database can then be updated with these patterns as known non-fire odor patterns or as a type of normal pattern.

[0034] Figure 3 is a block diagram showing the configuration of the control unit 3 shown in Figure 1.

[0035] The control unit 3 includes an odor detection signal receiving unit 31, a pattern determination unit 32, a normal pattern holding unit 33, a non-fire pattern holding unit 34, a fire pattern holding unit 35, a pattern recording unit 36, and a detection sensitivity changing unit 37.

[0036] The odor detection signal receiving unit 31 receives the odor detection signal transmitted from the odor detection unit 1.

[0037] The normal pattern retention unit 33 retains the odor pattern when the monitoring area 200 is in a normal state as the normal pattern.

[0038] As explained in Figure 2(A), when the monitoring area 200 is a server room, clean room, etc., the odor is stable under normal conditions. Also, even when the monitoring area 200 is a factory where products are manufactured, in unmanned spaces, although unique odors generated during the manufacturing process are present, the odor is stable under normal conditions.

[0039] Thus, the normal odor patterns differ depending on the intended use of each monitoring area 200. Therefore, the normal pattern retention unit 33 acquires the odor patterns that occur in the monitoring area 200 under normal conditions as soon as it is installed on-site and monitoring begins, and retains this as the normal pattern. This makes it possible to retain a unique normal pattern for each monitoring area 200 being monitored, enabling the determination of suitable odors.

[0040] The non-fire pattern retaining unit 34 retains a known pattern that has been identified as a non-fire odor.

[0041] The fire-causing pattern retaining unit 35 retains a known pattern that has been identified as a fire-causing odor.

[0042] These non-fire and fire patterns are sorted and stored each time an odor different from the normal pattern is detected after the detection system 100 is put into operation. In addition, odors emitted by highly flammable substances such as gasoline, kerosene, and gas may be stored in advance as examples of fire-related odors.

[0043] The pattern determination unit 32 determines whether the odor detection signal transmitted from the odor detection unit 1 is within the range of normal patterns held in the normal pattern holding unit 33.

[0044] Furthermore, if the pattern determination unit 32 determines that the signal is outside the range of the normal pattern, it determines whether the odor detection signal transmitted from the odor detection unit 1 is a pattern corresponding to a non-fire odor held in the non-fire pattern holding unit 34.

[0045] Furthermore, if the pattern determination unit 32 determines that the signal is outside the range of the normal pattern, it determines whether the odor detection signal transmitted from the odor detection unit 1 corresponds to a pattern of fire-related odors held in the fire-related pattern holding unit 35.

[0046] Furthermore, if the odor detection signal transmitted from the odor detection unit 1 is outside the range of the normal pattern, the pattern determination unit 32 instructs the pattern recording unit 36 ​​to record the transmitted odor pattern.

[0047] The pattern recording unit 36 ​​records odor patterns transmitted from the odor sensing unit 1 that fall outside the range of normal patterns, based on instructions from the pattern determination unit 32, along with date and time information.

[0048] By recording the odor pattern in the pattern recording unit 36, if the pattern is unknown, it is possible to determine whether the odor pattern is flammable or non-flammable through subsequent analysis and investigation.

[0049] If the odor pattern is identified as flammable, that odor pattern can be stored as a flammable pattern in the flammable pattern holding unit 35. On the other hand, if the odor pattern recorded in the pattern recording unit 36 ​​is identified as non-flammable, that odor pattern can be stored as a non-flammable pattern in the non-flammable pattern holding unit 34.

[0050] In this way, even if an unknown pattern outside the range of normal patterns is detected, by recording it, it can be stored in either a fire-related pattern or a non-fire-related pattern in one of the storage units, thereby improving the accuracy of subsequent fire detection.

[0051] Furthermore, by recording date and time information in conjunction with the odor pattern, it is possible to determine the date and time when the odor occurred, which can be useful for subsequent analysis and investigation.

[0052] The detection sensitivity changing unit 37 changes the detection sensitivity of the fire detection unit 2 based on the determination result of the pattern determination unit 32.

[0053] Here, if the fire detection unit 2 holds a detection threshold related to detection sensitivity and determines whether or not there is a fire, the detection sensitivity modification unit 37 transmits a modification command to the fire detection unit 2. Upon receiving the modification command, the fire detection unit 2 modifies the detection threshold it holds. As a result, the control unit 3 can variably control the detection sensitivity of the fire detection unit 2.

[0054] On the other hand, if the control unit 3 is a controller implemented in an R-type fire alarm receiver, the fire detection unit 2 transmits measured values ​​to the control unit 3, and the control unit 3 determines whether or not there is a fire based on the measured values. Therefore, when the control unit 3 variably controls the detection sensitivity of the fire detection unit 2, it changes the detection threshold held on the fire alarm receiver side.

[0055] Furthermore, the detection sensitivity adjustment unit 37 can increase the detection sensitivity of the fire detection unit 2 by lowering the detection threshold. Conversely, the detection sensitivity adjustment unit 37 can decrease the detection sensitivity of the fire detection unit 2 by raising the detection threshold. The factors affecting detection sensitivity are smoke concentration in the case of a smoke detector and temperature in the case of a heat detector.

[0056] Figure 4 is a flowchart showing the process in the control unit 3 shown in Figure 3 when registering the normal pattern.

[0057] In step S101 of Figure 4, the control unit 3 receives an odor detection signal transmitted from the odor detection unit 1. The odor detection signal received at this time is the odor pattern when the monitoring area 200 is in a normal state.

[0058] Then, in step S102, the control unit 3 holds the received odor detection signal as a normal pattern. This makes it possible to acquire a normal pattern specific to the monitoring area 200.

[0059] Figure 5 is a flowchart showing the process for changing the detection sensitivity in the control unit 3 shown in Figure 3. In the example in Figure 5, the detection sensitivity of the fire detection unit 2 is described as being controllable in three stages, from lowest to highest: "normal detection sensitivity," "high detection sensitivity," and "maximum detection sensitivity." For convenience, this is referred to as "maximum detection sensitivity," but it does not have to be the highest; any detection sensitivity higher than the high detection sensitivity is acceptable. Furthermore, the detection sensitivity may be controllable in two stages, or even in four or more stages.

[0060] In step S201 of Figure 5, the control unit 3 receives the odor detection signal transmitted from the odor detection unit 1. The pattern of the odor detection signal received here is referred to as the "current odor pattern".

[0061] In step S202, the control unit 3 determines whether the current odor pattern is within the range of the normal pattern.

[0062] Here, the control unit 3 calculates the difference between the normal pattern and the current odor pattern for each channel. Then, if the difference for each channel is within the range of a specified value, the control unit 3 determines that the current odor pattern is within the range of the normal pattern. Note that this method is merely one example, and various determination methods can be envisioned.

[0063] If the current odor pattern is within the range of the normal pattern, the control unit 3 selects the normal detection sensitivity setting in step S208.

[0064] Then, in step S209, the control unit 3 compares the selected detection sensitivity with the detection sensitivity currently set in the fire detection unit 2 and determines whether or not it is necessary to change the detection sensitivity.

[0065] If the control unit 3 determines that the currently set sensing sensitivity is the same as the selected sensing sensitivity, it does not need to change the currently set sensing sensitivity and terminates the process shown in Figure 5.

[0066] On the other hand, if the control unit 3 needs to change the currently set detection sensitivity, it proceeds to step S210 to change the detection threshold of the fire detection unit 2 to the selected value, and then terminates the process shown in Figure 5.

[0067] Furthermore, once the control unit 3 has completed the process shown in Figure 5, it immediately restarts and executes the process in step S201.

[0068] Let's return to the explanation of the judgment process in step S202. In step S202, if the current odor pattern is not within the range of the normal pattern, it is assumed that some kind of abnormality has occurred in the monitoring area 200. For this reason, the control unit 3 proceeds to step S203.

[0069] In step S203, the control unit 3 records the current odor pattern along with the date and time information. Then, the control unit 3 proceeds to step S204.

[0070] In step S204, the control unit 3 determines whether the current odor pattern corresponds to a fire-related pattern. If the control unit 3 determines that the current odor pattern corresponds to a fire-related pattern, it proceeds to step S206.

[0071] In step S206, the control unit 3 selects the highest detection sensitivity setting, assuming that there is a risk of fire occurring within the monitoring area 200. The control unit 3 then proceeds to step S209. The processing from step S209 onward is as described above.

[0072] Returning to the explanation of the determination process in step S204, the control unit 3 proceeds to step S205 if the current odor pattern does not correspond to a fire-related pattern, or if nothing is held in the fire-related pattern holding unit 35.

[0073] In step S205, the control unit 3 determines whether the current odor pattern corresponds to a non-fire-causing pattern. If the control unit 3 determines that the current odor pattern corresponds to a non-fire-causing pattern, it assumes there are no factors causing a fire and proceeds to step S208.

[0074] Then, in step S208, the control unit 3 selects the setting for normal sensing sensitivity and proceeds to step S209. The processing from step S209 onward is as described above.

[0075] Returning to the explanation of the judgment process in step S205, if in step S205 the control unit 3 determines that the current odor pattern does not correspond to a non-fire pattern, or if nothing is held in the non-fire pattern holding unit 34, the control unit 3 proceeds to step S207. Then, in step S207, the control unit 3 selects the high detection sensitivity setting to increase the detection sensitivity of the fire detection unit 2, and proceeds to step S209. The processing from step S209 onward is as described above.

[0076] Furthermore, if a pattern different from the normal pattern is detected, that is, if the determination in step S202 in the flowchart of Figure 5 is negative, the control unit 3 may issue either an alarm or a report, or both.

[0077] In this case, the alarm issued may be different from a fire alarm. Furthermore, if the monitoring area 200 is a place where unusual odors are unlikely to occur, such as a server room or clean room, a high-level alarm may be issued, as prompt fire detection is required. On the other hand, if the monitoring area 200 is a typical location, a moderate-level alarm may be issued, as various odors may occur.

[0078] The characteristics of this sensing system 100 can be summarized as follows, and it will be able to achieve its effects.

[0079] The sensing system 100 includes an odor sensing unit 1 that senses odors occurring in the monitoring area 200, patterns the sensed odors, and transmits them as odor sensing signals, and a control unit 3 that receives the odor sensing signals transmitted from the odor sensing unit 1.

[0080] The control unit 3 determines whether the odor detection signal transmitted from the odor detection unit 1 is within the range of a pre-registered normal operating pattern.

[0081] Therefore, a detection system 100 can be obtained that can more reliably detect the occurrence of unexpected odors within the monitoring area 200.

[0082] Furthermore, the control unit 3 issues an odor detection alarm based on the odor detection signal transmitted from the odor detection unit 1. This allows the system to notify the user if an odor is detected.

[0083] The sensing system 100 further includes a fire detection unit 2 that detects smoke or heat generated in the monitoring area 200. The control unit 3 further controls the detection sensitivity of the fire detection unit 2 based on the odor detection signal transmitted from the odor detection unit 1.

[0084] Therefore, the detection sensitivity of the fire detection unit 2 can be increased or decreased depending on the odor generated within the monitoring area 200.

[0085] If the odor detection signal transmitted from the odor detection unit 1 is outside the normal pattern range, the control unit 3 changes the detection sensitivity of the fire detection unit 2 to high sensitivity.

[0086] Therefore, if an unusual odor occurs within the monitoring area 200, it can be assumed that some kind of abnormality has occurred, and the detection sensitivity of the fire detection unit 2 can be changed to a high sensitivity setting. Consequently, early detection of fires and early warning signs of fires can be achieved more effectively.

[0087] Even if the odor detection signal transmitted from the odor detection unit 1 is outside the normal pattern range, the control unit 3 does not change the detection sensitivity of the fire detection unit 2 if the transmitted odor detection signal corresponds to a pattern of non-fire odor.

[0088] If the detection sensitivity is increased, false fire detections may occur. To prevent this, even if an unusual odor is detected within the monitoring area 200, the system can be controlled so that the detection sensitivity is not changed if the odor is a known non-fire odor.

[0089] If the odor detection signal transmitted from the odor detection unit 1 is outside the range of the normal pattern, and the transmitted odor detection signal corresponds to a fire-related odor, the control unit 3 further increases the detection sensitivity of the fire detection unit 2.

[0090] Therefore, if a known fire-related odor is present in monitoring area 200, it can be detected to enable earlier detection of a fire or to provide a warning sign of an impending fire.

[0091] The odor detection unit 1 detects the normal odor in the monitoring area 200 and transmits the normal odor detection signal to the control unit 3. The control unit 3 receives the normal odor detection signal and registers it as a normal pattern.

[0092] Depending on its intended use, monitoring area 200 may have its own unique odor even under normal conditions. By registering these unique odors in monitoring area 200 as normal patterns, monitoring can be performed in a manner suitable for monitoring area 200.

[0093] After receiving a signal outside the normal pattern range, the control unit 3 is capable of recording whether the odor detection signal is a pattern for a fire-related odor or a non-fire-related odor.

[0094] If an unusual odor occurs within the monitoring area 200 and the odor is unknown, the pattern of the odor can be recorded, analyzed, and investigated to determine whether it is a fire-related or non-fire-related odor pattern. By recording these classified odor patterns, control measures can be implemented according to whether the odor is fire-related or non-fire-related.

[0095] Furthermore, the control unit 3 issues an odor detection alarm if the odor detection signal transmitted from the odor detection unit 1 is outside the range of the normal pattern. This allows the system to notify that an unusual odor, not present under normal circumstances, is occurring in the monitoring area 200.

[0096] The fire detection unit 2 is an ultra-high sensitivity smoke detector. Therefore, the embodiment of Embodiment 1 can also be applied to ultra-high sensitivity smoke detectors installed in server rooms, clean rooms, etc., thereby broadening the range of applications.

[0097] (modified version) In addition to the above example, the following detection system can be applied to the odor sensing unit 1 in the above embodiment 1.

[0098] The detection system uses a technique called electronic olfaction to detect and identify each unique compound present in the gas.

[0099] This detection system is equipped with multiple cross-reactivity detection sensors. Each detection sensor has a "sensitive area" that provides a signal indicating the presence of a compound in the gas.

[0100] Furthermore, this detection system includes at least one reference sensor. The reference sensor provides a signal representing the measurement noise of the detection system. This reference sensor also has a "sensitive area".

[0101] These detection sensors and reference sensors are positioned on the surface of the substrate. Multiple "sensitive regions" exist on the surface of this substrate.

[0102] Each sensitive region corresponds to a different detection sensor and holds a receptor that interacts with the target compound. Each compound is detected through these sensitive regions.

[0103] A sensitive region corresponding to the reference sensor is also present in the substrate and is functionalized with specific fluorinated compounds, such as perfluorinated-terminated alkyl groups or fluorinated polymers. This enables the detection of measurement noise.

[0104] The detection system also includes a processor that processes signals provided by a detection sensor to acquire each component (characteristic property) representing the state of the compound, a memory that stores a reference component (reference characteristic property), and a calculation unit that calculates the similarity between the characteristic property and the reference characteristic property and provides an alteration index value for each compound from the calculated similarity value.

[0105] This detection system can reliably detect and identify specific compounds contained in gases through odor detection. Furthermore, by utilizing multiple detection sensors and a reference sensor, more reliable measurements can be achieved.

[0106] Furthermore, the processor determines the temporal evolution of at least one signal based on a combination of temporal variations in the signals provided by the detection sensor. The processor then uses this temporal evolution to temporally label the start and end of the adsorption state and the start and end of the desorption state of the compound, in relation to the signals from the detection sensor. This enables multi-sensory measurement of the adsorption and desorption of compounds present in a gas. [Explanation of Symbols]

[0107] 1 Odor detection unit, 2 Fire detection unit, 3 Control unit, 31 Odor detection signal receiving unit, 32 Pattern determination unit, 33 Normal pattern retention unit, 34 Non-fire pattern retention unit, 35 Fire pattern retention unit, 36 Pattern recording unit, 37 Detection sensitivity change unit, 100 Detection system, 200 Monitoring area.

Claims

1. An odor detection unit that detects odors occurring in the monitoring area, patterns the detected odors, and transmits them as an odor detection signal, A control unit that receives the odor detection signal transmitted from the odor detection unit, Equipped with, The control unit determines whether the odor detection signal transmitted from the odor detection unit is within the range of a pre-registered normal operating pattern. Sensing system.

2. The control unit further issues an odor detection alarm based on the odor detection signal transmitted from the odor detection unit. The sensing system according to claim 1.

3. The system further includes a fire detection unit that detects smoke or heat generated in the aforementioned monitoring area. The control unit further controls the detection sensitivity of the fire detection unit based on the odor detection signal transmitted from the odor detection unit. The sensing system according to claim 1.

4. The system further includes a fire detection unit that detects smoke or heat generated in the aforementioned monitoring area. The control unit further controls the detection sensitivity of the fire detection unit based on the odor detection signal transmitted from the odor detection unit. The sensing system according to claim 2.

5. The control unit, if the odor detection signal transmitted from the odor detection unit is outside the range of the normal pattern, changes the detection sensitivity of the fire detection unit to high sensitivity. The sensing system according to claim 4.

6. Even if the odor detection signal transmitted from the odor detection unit is outside the range of the normal pattern, the control unit will not change the detection sensitivity of the fire detection unit if the transmitted odor detection signal corresponds to a pattern of non-fire odor. The sensing system according to claim 5.

7. If the odor detection signal transmitted from the odor detection unit is outside the range of the normal pattern, and the transmitted odor detection signal corresponds to a fire-related odor, the control unit further increases the detection sensitivity of the fire detection unit. The sensing system according to claim 5.

8. The odor sensing unit senses the normal odor in the monitoring area and transmits the normal odor sensing signal to the control unit. The control unit receives the odor detection signal during normal operation and registers it as the normal operation pattern. The sensing system according to any one of claims 1 to 7.

9. The sensing system according to any one of claims 1 to 7, wherein the control unit can record whether the odor sensing signal is a pattern of a fire-related odor or a non-fire-related odor after receiving a signal outside the range of the normal pattern.

10. The control unit shall issue the odor detection alarm if the odor detection signal transmitted from the odor detection unit is outside the range of the normal pattern. The sensing system according to any one of claims 2, 4 to 7.

11. The fire detection unit is an ultra-high sensitivity smoke detector. The sensing system according to any one of claims 3 to 7.

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