JP3923239B2 - Sensor and supervisory control system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a sensor and a supervisory control system.
[0002]
[Prior art]
Conventionally, a P-type system in which an on / off type sensor is connected to L and C lines from a P-type receiver is known.
[0003]
Here, the on / off type sensor generally maintains the impedance between the L and C lines in a high impedance state (off state) when the detected predetermined physical quantity (for example, smoke concentration) is below a predetermined level. On the other hand, when the detected physical quantity (for example, smoke concentration) is above a predetermined level, the P-type receiver detects the sensor by setting the impedance between the L and C lines to a low impedance state (ON state). The result is notified.
[0004]
[Problems to be solved by the invention]
By the way, in recent years, as an on / off type sensor, a sensor (for example, a fire / non-fire) judgment that uses an abnormality (for example, an abnormality judgment algorithm (for example, a fire judgment algorithm)) has been developed. . FIG. 1 is a diagram showing a configuration example of an on / off type sensor having such a determination function. Referring to FIG. 1, the sensor 1 includes a first monitoring unit 11 that monitors a predetermined physical quantity under a predetermined monitoring condition, and an abnormality (for example, based on a predetermined physical quantity obtained by the first monitoring unit 11. A property determination unit 12 that determines a property of fire (for example, fire property), and a second monitor that performs monitoring according to the property of the abnormality (for example, fire) under the monitoring condition according to the property obtained by the property determination unit 12 Unit 13 and an output unit 14 that outputs a signal based on the monitoring result from the second monitoring unit 13.
[0005]
Here, as the first monitoring unit 11, for example, when the sensor 1 is a light scattering smoke sensor, for example, two different wavelengths λ from the light emitting element. ₁ , Λ ₂ Two different wavelengths λ emitted from the light emitting element. ₁ , Λ ₂ The configuration is such that scattered light due to the smoke of light is received by the light receiving element. In this case, the first monitoring unit 11 initially has, for example, one wavelength (for example, λ ₁ ), Only the scattered light due to light smoke, etc. is received by the light receiving element, and the light intensity, that is, whether or not a predetermined physical quantity (smoke density) exceeds a predetermined level is monitored. Two different wavelengths λ ₁ , Λ ₂ This can be configured so that the light receiving element receives the scattered light due to the smoke of the light.
[0006]
And the property determination part 12 is different 2 wavelength (lambda), for example ₁ , Λ ₂ The ratio of the scattered light output (2 wavelength ratio) is taken, and it is judged whether or not this 2 wavelength ratio is within the range of the preset value, so that abnormal properties (in the above example, smoke properties) To come to judge.
[0007]
More specifically, the abnormal property is determined by determining the type of particles in a specific particle size range from the two-wavelength ratio. As a result, for example, (1) fire smoke, It is possible to determine whether (2) cigarette smoke, (3) steam, (4) dust, or (5) other. That is, for example, when it is determined that the particle size is small from the two wavelength ratio, this is determined to be, for example, (1) fire smoke, and when it is determined that the particle size is large from the two wavelength ratio, Is determined to be, for example, (3) steam.
[0008]
More specifically, the second monitoring unit 13 performs monitoring according to (1) fire smoke, (2) cigarette smoke, (3) steam, (4) dust, (5) and others (for example, , Monitoring period T according to properties (1), (2), (3), (4), (5) ₁ , T ₂ , T _Three , T _Four , T _Five Monitoring).
[0009]
For example, when the property determination unit 12 obtains (1) fire smoke as a property, the second monitoring unit 13 confirms that it is not noise and immediately (with a short monitoring period). ), An environmental abnormality (for example, fire) signal is given to the output unit 14 as a monitoring result.
[0010]
In addition, for example, when the steam is obtained as a property in the property determination unit 12, the second monitoring unit 13 performs a predetermined monitoring period T _Three For example, it is determined whether or not a state in which the particle concentration exceeds a predetermined level is maintained over a predetermined monitoring period T (for example, 20 seconds). _Three For example, when the state where the particle concentration exceeds a predetermined level continues for 20 seconds (for example, 20 seconds), an environmental abnormality (for example, fire) signal is given to the output unit 14 as a monitoring result. Monitoring period T _Three If, for example, the state in which the particle concentration exceeds a predetermined level does not continue (for example, if the level has decreased for 10 seconds), for example, if there is no environmental abnormality (for example, non- The monitoring result is not sent to the output unit 14 (as a fire).
[0011]
In this way, the second monitoring unit 13 can monitor the monitoring period (monitoring condition) T according to, for example, the characteristics (1), (2), (3), (4), (5). ₁ , T ₂ , T _Three , T _Four , T _Five When a certain property is obtained, the monitoring result is sent to the output unit 14 based on whether or not the state where the particle concentration exceeds the predetermined level is maintained over the monitoring period corresponding to the property, or the monitoring is performed. The result is not sent to the output unit 14.
[0012]
In the configuration of FIG. 1, the property determination unit 12 and the second monitoring unit 13 use an abnormality determination algorithm (for example, a fire determination algorithm).
[0013]
The output unit 14 outputs a signal when the monitoring result is sent from the second monitoring unit 13 (in the case of the first signal, R ₁ ) Is output to the receiver 2. Specifically, the output unit 14 reduces the impedance between the L and C lines (turns on) and notifies the receiver 2 only when the monitoring result is sent from the second monitoring unit 13. When the monitoring result is not sent (in the case of non-fire), the impedance between the L and C lines is held in a high impedance state (off state).
[0014]
As described above, since the on / off type sensor 1 of FIG. 1 makes a judgment of, for example, a fire / non-fire by a single sensor, it is possible to reduce the burden on the receiver 2 and false alarms.
[0015]
By the way, in general, when a sensor (smoke sensor) is tested (a smoke test), a test gas (for example, a spray-like test gas) is blown onto the sensor. In this manner, the on / off type shown in FIG. When testing the sensor 1, the particle size of the test gas is almost the same as the particle size of the steam. Therefore, when the test gas is sprayed on the on / off type sensor 1 of FIG. (3) The steam is determined to be steam, and the second monitoring unit 13 (3) has a predetermined monitoring period T corresponding to steam. _Three Monitoring is continued for (for example, 20 seconds). As a result, a considerable amount of time is required from the start of the test to the end of the test (from when the test gas is blown to when the result is output).
[0016]
As described above, an on / off type sensor having a determination function of fire / non-fire (abnormality determination algorithm (for example, fire determination algorithm)) requires a considerable time for the test (for example, smoke test). There was a problem.
[0017]
The present invention provides a sensor and a monitoring control system capable of reducing the test time at the time of a test even if the sensor has a function of judging an abnormality (for example, a function of judging a fire / non-fire). The purpose is to do.
[0018]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is based on a physical quantity detection means for detecting a predetermined physical quantity and a physical quantity detected by the physical quantity detection means. Using an abnormality judgment algorithm to determine the nature of an abnormality An abnormality determining means for determining whether or not there is an abnormality, a level determining means for determining whether or not the level of the physical quantity detected by the physical quantity detecting means exceeds a predetermined level, and causing the abnormality determining means to perform processing, or And switching means for switching whether the level judging means performs processing.
[0019]
According to a second aspect of the present invention, in the sensor according to the first aspect, the sensor further includes timing control means for controlling a switching timing in the switching means.
[0020]
According to a third aspect of the present invention, in the sensor according to the first or second aspect, the time required for the judgment processing of the level judgment means is shorter than the time required for the judgment processing of the abnormality judgment means. It is characterized by that.
[0023]
Also, Claim 4 The invention described in the invention is characterized in that, in the sensor according to claim 1, the switching means is switched so as to cause the level judging means to perform processing when testing the sensor.
[0024]
Also, Claim 5 According to a second aspect of the present invention, in the sensor according to the second aspect, the timing control unit is configured such that the sensor is turned on, a predetermined signal is input from a receiver, or a specific transmission from a test jig. A predetermined test period is measured from the time of signal input, and the switching unit causes the level determination unit to perform determination processing during the predetermined test period timed by the timing control unit.
[0025]
Also, Claim 6 The described invention is a monitoring control system including a receiver and a sensor connected to a transmission path from the receiver and monitored and controlled by the receiver. The sensor detects a predetermined physical quantity. Based on the physical quantity detection means and the physical quantity detected by the physical quantity detection means, Using an abnormality judgment algorithm to determine the nature of an abnormality An abnormality determining means for determining whether or not there is an abnormality, a level determining means for determining whether or not the level of the physical quantity detected by the physical quantity detecting means exceeds a predetermined level, and causing the abnormality determining means to perform processing, or And switching means for switching whether the level judging means performs processing.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 2 is a diagram showing a configuration example of a sensor according to the present invention. Referring to FIG. 2, the sensor 30 includes, for example, a physical quantity detection unit 31 that detects a physical quantity such as smoke density, and an abnormality determination algorithm (eg, fire) based on the physical quantity (eg, smoke density) detected by the physical quantity detection unit 31. An abnormality determination unit 32 that determines whether or not there is an abnormality such as a fire using a determination algorithm), and whether or not the level of a physical quantity (for example, smoke concentration) detected by the physical quantity detection unit 31 exceeds a predetermined level. Switching unit 34 for switching whether level judgment unit 33 and abnormality judgment unit 32 perform processing or whether level judgment unit 33 performs processing, judgment result from abnormality judgment unit 32, or level judgment unit And an output unit 35 that outputs a signal corresponding to the determination result from 33.
[0027]
Here, when the abnormality determination unit 32 determines whether there is an abnormality such as a fire using an abnormality determination algorithm (for example, a fire determination algorithm), the determination process includes a predetermined time T. _a On the other hand, the level determination unit 33 only determines whether or not the level of the physical quantity (for example, smoke density) detected by the physical quantity detection unit 31 exceeds a predetermined level. _b Is the time T required for the determination process of the abnormality determination unit 32 _a It is very short compared to
[0028]
Utilizing this fact, the switching unit 34 performs switching so that the abnormality determination unit 32 performs processing in the normal operation mode, while performing processing in the level determination unit 33 instead of the abnormality determination unit 32 in the test mode. It is configured to be able to be switched.
[0029]
That is, in such a configuration, in the test mode, since the switching is performed so that the level determination unit 33, not the abnormality determination unit 32, performs processing, the test time during the test (for example, during the smoke test) can be shortened. Is possible. Here, the test refers to a test of the physical quantity detection unit 31, the output unit 35, etc., that is, a test of the hardware part of the sensor.
[0030]
Specifically, the switching unit 34 can be configured to manually switch whether the abnormality determination unit 32 performs processing or the level determination unit 33 performs processing. Alternatively, the switching unit 34 can automatically switch whether the abnormality determining unit 32 performs processing or the level determining unit 33 performs processing when a predetermined condition is satisfied. Can be configured.
[0031]
FIG. 3 is a diagram showing an example of a sensor configured to be able to automatically switch whether the abnormality determination unit 32 performs processing or the level determination unit 33 performs processing in the sensor of FIG. It is. In the example of FIG. 3, the sensor 30 is further provided with a timing control unit 36 that controls the switching timing in the switching unit 34.
[0032]
Here, as the timing control unit 36, for example, a predetermined timing (specifically, when the sensor 30 is turned on, or when a predetermined signal (for example, a recovery signal) is input from the receiver, or for a test. A test period timer that measures a predetermined test period from a specific transmission signal input from a jig or the like can be used. In this case, the switching unit 34 is timed by a timing control unit (test period timer) 36. During the predetermined test period, the level determination unit 33 is configured to perform determination processing.
[0033]
Specifically, the process for operating the test period timer 36 when the sensor 30 is turned on is performed as follows. That is, the test period timer 36 is operated when the power of the sensor 30 is turned on, and the switching unit 34 sets the test period until the timer 36 times out, and tests the mode of the sensor 30. Switch to the mode you want. That is, during the test period, the switching unit 34 causes the level determination unit 33 to perform processing. In this case, the level determination unit 33 outputs, for example, a fire signal as soon as the physical quantity (eg, smoke concentration) detected by the physical quantity detection unit 31 exceeds a predetermined level (eg, fire level).
[0034]
Further, the processing when the test period timer 36 of the sensor 30 is operated when a predetermined signal (for example, a restoration signal) is input from the receiver to the sensor 30 is similarly performed. That is, when a predetermined signal (for example, a recovery signal) is input from the receiver to the sensor 30, the test period timer 36 is operated, and the switching unit 34 sets the test period until the timer 36 times out, The mode of the sensor 30 is switched to a mode for performing a test. That is, during the test period, the switching unit 34 causes the level determination unit 33 to perform processing. In this case, the level determination unit 33 outputs, for example, a fire signal as soon as the physical quantity (for example, smoke concentration) detected by the physical quantity detection unit 31 exceeds a predetermined level (for example, fire level).
[0035]
Further, the processing when the test period timer 36 of the sensor is operated when a specific transmission signal is input to the sensor 30 from a test jig or the like is similarly performed. That is, when a specific transmission signal is input to the sensor 30 from a test jig or the like, the test period timer 36 is operated, and the switching unit 34 sets a period until the timer 36 times out as a test period, The mode of the sensor 30 is switched to a mode for performing a test. That is, during the test period, the switching unit 34 causes the level determination unit 33 to perform processing. In this case, the level determination unit 33 outputs, for example, a fire signal as soon as the physical quantity (eg, smoke concentration) detected by the physical quantity detection unit 31 exceeds a predetermined level (eg, fire level).
[0036]
As described above, when performing a test (for example, a smoke test), the level determination unit 33 is used, and an abnormality determination algorithm (fire determination algorithm) is not used, so that a test (for example, a smoke test) is performed. Because the sensor responds quickly, the test time can be shortened. When such a test is completed, the abnormality determination algorithm (fire determination algorithm) automatically starts operating.
[0037]
In general, when testing a sensor (for example, a smoke sensor), a test gas (for example, a spray-like test gas) is sprayed on the sensor, but when testing the sensor 1 of FIG. Therefore, when the test gas is blown onto the sensor 1 shown in FIG. 1, the property determination unit 12 determines that the steam is (3) steam and the second monitoring unit 13. Then, (3) a predetermined monitoring period T according to steam _Three Monitoring is continued (for example, for 20 seconds), and it takes a considerable time from the start of the test to the end of the test (after the test gas is blown until the result is output).
[0038]
In contrast, in the present invention, as described above, at the time of the test, the switching unit 34 switches the level determining unit 33 to perform processing, and the level determining unit 33 performs processing. When the physical quantity detection unit 31 is normal (when there is no failure), the level determination unit 33 immediately outputs that the physical quantity is equal to or higher than a predetermined level, for example, a fire signal is immediately generated. The test result can be obtained quickly by outputting.
[0039]
After the test result is obtained, the switching unit 34 performs switching so that the abnormality determination unit 32 performs processing, and the abnormality determination unit 32 performs processing. That is, the abnormality determination unit 32 determines whether there is an abnormality such as a fire using an abnormality determination algorithm (fire determination algorithm).
[0040]
FIG. 4 is a diagram showing a specific example (on / off type sensor) of the sensor of FIG. 2 or FIG. In the example of FIG. 4, the timing control unit 36 in FIG. 3 is not shown for the sake of simplicity.
[0041]
Referring to FIG. 4, the sensor 30 includes a first monitoring unit 11 that monitors a predetermined physical quantity (for example, smoke density) under a predetermined monitoring condition, and a predetermined physical quantity obtained by the first monitoring unit 11. The property determination unit 12 that determines the property (for example, fire property) of the abnormality (for example, fire property) based on (for example, smoke concentration), and the property of the abnormality (for example, fire) under the monitoring conditions according to the property obtained by the property determination unit 12 A second monitoring unit 13 that performs monitoring according to the level, and a level determination unit 33 that determines whether or not the level of a predetermined physical quantity (for example, smoke density) obtained by the first monitoring unit 11 exceeds a predetermined level. A switching unit 34 that switches whether the property determination unit 12 and the second monitoring unit 13 perform processing or the level determination unit 33 performs processing, and a monitoring result from the second monitoring unit 13, Alternatively, the judgment from the level judgment unit 33 And an output unit 14 for outputting a signal corresponding to the result.
[0042]
Here, the 1st monitoring part 11 respond | corresponds to the physical quantity detection part 31 of FIG. 2 or FIG. 3, and the property determination part 12 and the 2nd monitoring part 13 use an abnormality determination algorithm (for example, fire determination algorithm). It corresponds to the abnormality determination unit 32 of FIG. 2 or 3 that uses it to determine whether there is an abnormality such as a fire.
[0043]
Specifically, as the first monitoring unit 11, for example, when the sensor 30 is a light scattering smoke sensor, for example, two different wavelengths λ from the light emitting element. ₁ , Λ ₂ Two different wavelengths λ emitted from the light emitting element. ₁ , Λ ₂ The configuration is such that scattered light due to the smoke of light is received by the light receiving element. In this case, the first monitoring unit 11 initially has, for example, one wavelength (for example, λ ₁ ), Only the scattered light due to light smoke, etc. is received by the light receiving element, and the light intensity, that is, whether or not a predetermined physical quantity (smoke density) exceeds a predetermined level is monitored. Two different wavelengths λ ₁ , Λ ₂ This can be configured so that the light receiving element receives the scattered light due to the smoke of the light.
[0044]
Further, the property determination unit 12 is different from the first monitoring unit 11 in the two wavelengths λ. ₁ , Λ ₂ When the scattered light output of ₁ , Λ ₂ The ratio of the scattered light output (2 wavelength ratio) is taken, and it is judged whether or not this 2 wavelength ratio is within the range of the preset value, so that abnormal properties (in the above example, smoke properties) To come to judge.
[0045]
More specifically, the abnormal property is determined by determining the type of particles in a specific particle size range from the two-wavelength ratio. As a result, for example, (1) fire smoke, It is possible to determine whether (2) cigarette smoke, (3) steam, (4) dust, or (5) other. That is, for example, when it is determined that the particle size is small from the two wavelength ratio, this is determined to be, for example, (1) fire smoke, and when it is determined that the particle size is large from the two wavelength ratio, Is determined to be, for example, (3) steam.
[0046]
More specifically, the second monitoring unit 13 performs monitoring according to (1) fire smoke, (2) cigarette smoke, (3) steam, (4) dust, (5) and others (for example, , Monitoring period T according to properties (1), (2), (3), (4), (5) ₁ , T ₂ , T _Three , T _Four , T _Five Monitoring).
[0047]
For example, when the property determination unit 12 obtains (1) fire smoke as a property, the second monitoring unit 13 confirms that it is not noise and immediately (with a short monitoring period). ), (1) The output unit 14 is given a fire smoke.
[0048]
In addition, for example, when the steam is obtained as a property in the property determination unit 12, the second monitoring unit 13 performs a predetermined monitoring period T _Three For example, it is determined whether or not a state in which the particle concentration exceeds a predetermined level is maintained over a predetermined monitoring period T (for example, 20 seconds). _Three For example, when the state where the particle concentration exceeds a predetermined level continues for 20 seconds (for example, 20 seconds), an environmental abnormality (for example, fire) signal is given to the output unit 14 as a monitoring result. Monitoring period T _Three If, for example, the state in which the particle concentration exceeds a predetermined level does not continue (for example, if the level has decreased for 10 seconds), for example, if there is no environmental abnormality (for example, non- The monitoring result is not sent to the output unit 14 (as a fire).
[0049]
In this way, the second monitoring unit 13 can monitor the monitoring period (monitoring condition) T according to, for example, the characteristics (1), (2), (3), (4), (5). ₁ , T ₂ , T _Three , T _Four , T _Five When a certain property is obtained, the monitoring result is sent to the output unit 14 based on whether or not the state where the particle concentration exceeds the predetermined level is maintained over the monitoring period corresponding to the property, or the monitoring is performed. The result is not sent to the output unit 14.
[0050]
On the other hand, the level determination unit 33 receives, for example, one type of wavelength (for example, λ from the first monitoring unit 11). ₁ ) Of scattered light due to light smoke or the like, that is, whether or not a physical quantity such as smoke density has exceeded a predetermined level, and the determination result is output.
[0051]
The output unit 14 receives a signal corresponding to the monitoring result from the second monitoring unit 13 when the switching unit 34 is switched so that the property determination unit 12 and the second monitoring unit 13 perform processing. Outputs to the machine 2. Specifically, the output unit 14 reduces the impedance between the L and C lines (turns on) and notifies the receiver 2 only when the monitoring result is sent from the second monitoring unit 13. When the monitoring result is not sent (in the case of non-fire), the impedance between the L and C lines is held in a high impedance state (off state).
[0052]
On the other hand, when the switching unit 34 is switching so that the level determination unit 33 performs processing, the output unit 14 outputs a signal corresponding to the determination result from the level determination unit 33 to the receiver 2. Specifically, when the determination result from the level determination unit 33 is equal to or higher than a predetermined level, the output unit 14 reduces the impedance between the L and C lines (turns on), and sends it to the receiver 2. In addition, when the determination result from the level determination unit 33 is equal to or lower than a predetermined level, the impedance between the L and C lines is held in a high impedance state (off state).
[0053]
In such a configuration, the switching unit 34 switches the property determination unit 12 and the second monitoring unit 13 to perform processing in the normal operation mode, while the property determination unit 12 and the second monitoring unit perform the test. It is possible to switch the level determination unit 33 to perform processing instead of the unit 13. That is, in such a configuration, the test time can be shortened because the level determination unit 33 is switched to perform the process instead of the property determination unit 12 and the second monitoring unit 13 during the test.
[0054]
In addition, in the sensor (on / off type sensor) 30 of FIG. 4, since this sensor itself has, for example, a fire / non-fire judgment function, the P-type receiver 2 has a storage function. It doesn't have to be a thing.
[0055]
However, on / off type detectors that do not have a fire / non-fire judgment function as well as an on / off type sensor that has a fire / non-fire judgment function on the L and C lines from the P-type receiver 2. In order to reduce false alarms caused by an on / off type sensor not equipped with a fire / non-fire judgment function, the P-type receiver 2 has a storage function. A P-type storage receiver is used.
[0056]
FIG. 5 is a diagram for explaining the operation (particularly the storage function) of the P-type storage receiver. Referring to FIG. 5, the first sensor signal (signal indicating the ON state) R from the on / off type sensor. ₁ Is notified to the P-type storage receiver (FIG. 5A), the P-type storage receiver receives the first sensor signal R. ₁ Rather than immediately outputting an alarm or the like, the second sensor signal R from the on / off type sensor ₂ Wait for notification. That is, the first sensor signal (signal indicating the ON state) R from the on / off type sensor R ₁ Is notified to the P-type storage receiver (FIG. 5 (a)), the P-type storage receiver supplies a recovery signal Q to the on / off type sensor and resets the on / off type sensor. (FIG. 5 (b)). Accordingly, the on / off type sensor starts a sensing operation. In the P-type accumulation type receiver, after outputting the recovery signal Q, the second sensor signal R from the on / off type sensor within a predetermined period T is output. ₂ And the second sensor signal R within a predetermined period T is monitored. ₂ It is determined that an abnormality (for example, a fire) has occurred for the first time, and an alarm is output. On the other hand, the second sensor signal R within a predetermined period T. ₂ If there is no notification of the first sensor signal R ₁ Even if is notified, it is not judged that an abnormality (for example, a fire) has occurred, and an alarm or the like is not output. In this way, false alarms can be reduced by providing a P-type receiver with a storage function.
[0057]
When the P-type accumulation type receiver as described above is used for the P-type receiver 2, even in the on / off type sensor 30 of FIG. 4, for example, in the case of a fire, the first sensor signal (ON state) Signal) R ₁ To the P-type accumulation-type receiver 2, and after being reset by the recovery signal Q from the P-type accumulation-type receiver 2, the second sensor signal R within a predetermined period T (for example, a period of 40 seconds). ₂ Must be notified to the P-type storage receiver 2.
[0058]
However, in the on / off type sensor 30 of FIG. 4, when the recovery signal Q is output from the P type receiver 2 and the sensor 30 is reset, the sensor 30 again returns to the first monitoring unit 11, Since the processing of the property determination unit 12, the second monitoring unit 13, and the output unit 14 is sequentially performed, the second sensor signal R from the output unit 14 is processed. ₂ There is a problem in that the predetermined period T (for example, a period of 40 seconds) may elapse before the is output.
[0059]
FIG. 6 is a diagram showing another specific example (on / off type sensor) of the sensor of FIG. 2 or FIG. 3, and the on / off type sensor 30 of FIG. An on / off type sensor equipped with a function to judge non-fire), and when it is connected to a P-type storage receiver, it is within a predetermined period when it is judged abnormal (for example, fire). In addition, the second sensor signal can be reliably notified to the P-type storage receiver. In the example of FIG. 6, the timing control unit 36 in FIG. 3 is not shown for the sake of simplicity. Further, in FIG. 6, the same reference numerals are given to the same portions as in FIG.
[0060]
Referring to FIG. 6, the sensor 30 includes a first monitoring unit 11 that monitors a predetermined physical quantity under a predetermined monitoring condition, and an abnormality (for example, based on a predetermined physical quantity obtained by the first monitoring unit 11 (for example, A property determination unit 12 that determines a property of fire (for example, fire property), and a second monitor that performs monitoring according to the property of the abnormality (for example, fire) under the monitoring condition according to the property obtained by the property determination unit 12 Unit 13, a level determination unit 33 that determines whether or not a level of a predetermined physical quantity (for example, smoke density) obtained by the first monitoring unit 11 exceeds a predetermined level, a property determination unit 12, a second The switching unit 34 for switching whether the monitoring unit 13 performs processing or the level determining unit 33 performs processing, the monitoring result from the second monitoring unit 13, or the determination result from the level determining unit 33 Outputs a signal according to the 14, a property storage unit 15 that stores the property obtained by the property determination unit 12, and a reading unit that reads the property stored in the property storage unit 15 when the recovery signal Q is output from the receiver 2. 16, a third monitoring unit 17 that performs monitoring according to the property under the monitoring condition according to the property read by the reading unit 16, and a signal R based on the monitoring result from the third monitoring unit 17 ₂ Is output to the receiver 2.
[0061]
Here, the first monitoring unit 11, the property determination unit 12, the second monitoring unit 13, and the output unit 14 in FIG. 6 are the same as the first monitoring unit 11, the property determination unit 12, and the second monitoring unit in FIG. 13 has exactly the same function as the output unit 14.
[0062]
On the other hand, in the sensor 30 of FIG. 6, the property obtained by the property determination unit 12 is stored in the property storage unit 15. For example, when the property obtained by the property determination unit 12 is (1) fire smoke, (1) fire smoke is stored in the property storage unit 15 and obtained by the property determination unit 12. When the property is (3) steam, the property storage unit 15 stores (3) steam. Here, the property storage unit 15 is configured by, for example, a nonvolatile memory.
[0063]
In the sensor 30 of FIG. 6, when receiving the restoration signal Q from the P-type receiver 2, the reading unit 16 reads the properties stored in the property storage unit 15. That is, the output from the output unit 14 of the sensor 30 in FIG. ₁ ) Is in the ON state, and when the restoration signal Q is given to the sensor 30 from the P-type receiver 2, the reading unit 16 is stored in the property storage unit 15. The properties are read out.
[0064]
Specifically, in the case where (1) fire smoke is stored as a property in the property storage unit 15, when the reading unit 16 receives the recovery signal Q from the P-type receiver 2, it reads from the property storage unit 15. (1) Fire smoke can be read out, and if the property storage unit 15 stores (3) steam as a property, the reading unit 16 receives a recovery signal from the P-type receiver 2. When Q is received, (3) steam can be read from the property storage unit 15.
[0065]
The third monitoring unit 17 performs monitoring according to the property under the monitoring condition according to the property read by the reading unit 16. The third monitoring unit 17 basically performs the same monitoring as the second monitoring unit 13. That is, the third monitoring unit 17 is configured to monitor, for example, the monitoring period (monitoring condition) T according to the characteristics (1), (2), (3), (4), (5). ₁ ', T ₂ ', T _Three ', T _Four ', T _Five When a certain property is obtained, the monitoring result is sent to the output unit 14 based on whether or not the state in which the particle concentration exceeds a predetermined level is maintained over the monitoring period corresponding to the property. The monitoring result is not sent to the output unit 14.
[0066]
However, the third monitoring unit 17 sets the monitoring period (monitoring condition) to T ₁ ', T ₂ ', T _Three ', T _Four ', T _Five In this point, the monitoring period (monitoring condition) is different from that of the second monitoring unit 13. Here, the monitoring period (monitoring condition) T in the third monitoring unit 17 ₁ ', T ₂ ', T _Three ', T _Four ', T _Five 'Is the monitoring period (monitoring condition) T in the second monitoring unit 13 ₁ , T ₂ , T _Three , T _Four , T _Five Shorter than (T ₁ '≦ T ₁ T ₂ '≦ T ₂ T _Three '≦ T _Three T _Four '≦ T _Four T _Five '≦ T _Five ).
[0067]
More specifically, the third monitoring unit 17 performs monitoring according to (1) fire smoke, (2) cigarette smoke, (3) steam, (4) dust, (5), etc. Monitoring period T according to (1), (2), (3), (4), (5) ₁ ', T ₂ ', T _Three ', T _Four ', T _Five 'Monitoring'.
[0068]
For example, when the property read by the reading unit 16 is (1) fire smoke, the third monitoring unit 17 confirms that it is not noise and immediately (with a short monitoring period). ), (1) The re-output unit 18 is designated as fire smoke.
[0069]
For example, when the property read by the reading unit 16 is (3) steam, the third monitoring unit 17 performs a predetermined monitoring period T. _Three For example, it is determined whether or not the state where the particle concentration exceeds a predetermined level is maintained over a predetermined period of time T (for example, 10 seconds). _Three For example, when the state where the particle concentration exceeds a predetermined level continues for (for example, 10 seconds), an environmental abnormality (for example, fire) signal is given to the re-output unit 18 as a monitoring result, Predetermined monitoring period T _Three If, for example, the state in which the particle concentration exceeds a predetermined level does not continue (for example, if the level has dropped in 5 seconds), there is no environmental abnormality (for example, The monitoring result is not sent to the re-output unit 18 (as a non-fire).
[0070]
Then, the re-output unit 18 receives the signal R when the monitoring result is sent from the third monitoring unit 17. ₂ Is output to the receiver 2. Specifically, the re-output unit 18 reduces the impedance between the L and C lines (turns on) and notifies the receiver 2 only when the monitoring result is sent from the third monitoring unit 17. When the monitoring result is not sent (in the case of non-fire), the impedance between the L and C lines is kept in a high impedance state (off state).
[0071]
As described above, in the sensor 30 of FIG. 6, when the restoration signal Q is given from the receiver 2, the immediately previous property stored in the property storage unit 15 is directly read and immediately sent to the third monitoring unit 17. To give. In other words, in the configuration of the sensor 30 in FIG. 4, when the recovery signal Q is given from the receiver 2, the first monitoring unit 11, the property determination unit 12, and the first monitoring unit 11 are returned to the first monitoring unit 11 again. 6 is sequentially performed. In the sensor 30 of FIG. 6, when the restoration signal Q is received from the receiver 2, the first monitoring unit 11 and the property determination unit in the sensor 30 of FIG. 12 can be omitted (even if the sensor 30 is reset by the recovery signal Q for the accumulation operation of the receiver 2, the sensor 30 can acquire the immediately preceding property, Since the monitoring unit 11 and the property determination unit 12 do not need to be re-evaluated), the time T required for processing of the first monitoring unit 11 and the property determination unit 12 in the sensor 30 of FIG. _x Can be omitted (reactivation time is not lengthened). For example, the time T required for processing by the first monitoring unit 11 and the property determination unit 12 in the sensor 30 of FIG. _x 6 is the second sensor signal R from the re-output unit 18 after the recovery signal Q is input from the receiver 2 in the sensor 30 of FIG. ₂ T is the time required to output _x (= 10 seconds).
[0072]
Further, in the sensor 30 of FIG. 6, the monitoring period (monitoring condition) T in the third monitoring unit 17. ₁ ', T ₂ ', T _Three ', T _Four ', T _Five 'Is the monitoring period (monitoring condition) T in the second monitoring unit 13 ₁ , T ₂ , T _Three , T _Four , T _Five Shorter than (T ₁ '≦ T ₁ T ₂ '≦ T ₂ T _Three '≦ T _Three T _Four '≦ T _Four T _Five '≦ T _Five Therefore, when the recovery signal Q is received from the receiver 2, the monitoring process in the third monitoring unit 17 is performed in a shorter time than the monitoring process in the second monitoring unit 13 of the sensor 30 in FIG. Can do. Specifically, the third monitoring unit 17 determines the time required for the monitoring process by T than the second monitoring unit 13. _y Can only be shortened.
[0073]
As described above, in the sensor 30 of FIG. 6, the second sensor signal R from the re-output unit 18 after the restoration signal Q is input from the receiver 2 as compared with the sensor 30 of FIG. 4. ₂ (T _x + T _y ) Can only be shortened.
[0074]
Thus, even when a P-type storage receiver that performs the operation shown in FIG. 5 is used as the P-type receiver 2, the sensor 30 in FIG. After receiving the recovery signal Q, the second sensor signal R within a predetermined period T (for example, a period of 40 seconds). ₂ Can be reliably notified to the P-type storage receiver 2.
[0075]
On the other hand, also in the sensor 30 of FIG. 6, the level determination unit 33 has, for example, one wavelength (for example, λ) from the first monitoring unit 11. ₁ ) Of scattered light due to light smoke or the like, that is, whether or not a physical quantity such as smoke density has exceeded a predetermined level, and the determination result is output.
[0076]
The output unit 14 receives a signal corresponding to the monitoring result from the second monitoring unit 13 when the switching unit 34 is switched so that the property determination unit 12 and the second monitoring unit 13 perform processing. Outputs to the machine 2. Specifically, the output unit 14 reduces the impedance between the L and C lines (turns on) and notifies the receiver 2 only when the monitoring result is sent from the second monitoring unit 13. When the monitoring result is not sent (in the case of non-fire), the impedance between the L and C lines is held in a high impedance state (off state).
[0077]
On the other hand, when the switching unit 34 is switching so that the level determination unit 33 performs processing, the output unit 14 outputs a signal corresponding to the determination result from the level determination unit 33 to the receiver 2. Specifically, when the determination result from the level determination unit 33 is equal to or higher than a predetermined level, the output unit 14 reduces the impedance between the L and C lines (turns on), and sends it to the receiver 2. In addition, when the determination result from the level determination unit 33 is equal to or lower than a predetermined level, the impedance between the L and C lines is held in a high impedance state (off state).
[0078]
In such a configuration, the switching unit 34 switches the property determination unit 12 and the second monitoring unit 13 to perform processing in the normal operation mode, while the property determination unit 12 and the second monitoring unit perform the test. It is possible to switch the level determination unit 33 to perform processing instead of the unit 13. That is, in such a configuration, the test time can be shortened because the level determination unit 33 is switched to perform the process instead of the property determination unit 12 and the second monitoring unit 13 during the test.
[0079]
In the configuration example of FIG. 6, the output unit 14 and the re-output unit 18 are provided separately. However, the output unit 14 and the re-output unit 18 may be combined into a single output unit. .
[0081]
FIG. 7 is a diagram illustrating a hardware configuration example of the sensor 30 of FIG. 2 or 3. In the example of FIG. 7, this sensor detects a physical quantity such as smoke density and converts it into an electrical signal (analog signal), and an analog signal output from the physical quantity detection unit 31 in a predetermined cycle. A / D converter 42 that samples and converts to a digital signal, an address section 43 in which the address of the sensor is set, a CPU 44 that controls the entire sensor such as abnormality (for example, fire) determination, and CPU 44 A physical quantity that is detected by the physical quantity detection unit 31 and converted into a digital signal by the A / D conversion unit 42, a ROM 45 that stores the control program, a RAM 46 that is used as various work areas, a non-volatile memory 47, and the like. When the CPU 44 determines that there is an abnormality such as a fire based on the detection result (for example, smoke concentration) (the output level from the A / D converter 42), the operation state (ON state) is changed. A state output unit 48 that outputs a signal to be transmitted to a transmission line (for example, L and C lines) 3, and a transmission unit (communication interface unit) 49 that performs transmission through the transmission line 3 with the receiver 2, for example. ing.
[0082]
In other words, the sensor in the example of FIG. 7 is configured as a so-called sensor address sensor (which belongs to an on / off type sensor from the detection output signal). In the configuration of FIG. 7, the functions of the abnormality determination unit 32, the level determination unit 33, the switching unit 34, and the timing control unit 36 of FIGS. 2 and 3 can be realized by the CPU 44. Further, the function of the output unit 35 of FIGS. 2 and 3 can be realized by the status output unit 48 and the transmission unit 49.
[0083]
Note that such a sensor can be used as an element of a monitoring control system (for example, a disaster prevention system) by being incorporated in a monitoring control system (for example, a disaster prevention system) as shown in FIG. Referring to FIG. 7, this monitoring control system (for example, disaster prevention system) includes a receiver (for example, an addressable P-type receiver) 2 and a sensor having the above-described configuration that is monitored and controlled by the receiver 2. Yes.
[0084]
Here, the sensor is connected to a predetermined transmission line (for example, L and C lines) 3 extending from the receiver 2, and in the example of FIG. , C is set at 24V, the sensor operating level (on level) is set at, for example, the potential between L and C is 5V, and the short circuit level is set at, for example, between L and C. Can be set at a potential of 0V.
[0085]
Corresponding to such a system configuration, the sensor status output unit 48 of FIG. 7 sets the potential between the L and C of the transmission line 3 to the on level as a signal indicating the operating state (ON state) of the sensor. It is designed to be 5V.
[0086]
In the receiver 2, when a plurality of sensors are connected to the transmission line 3, at least one of the sensors is activated (turned on), and the L and C of the transmission line 3 are connected. When the on-level potential is detected to be 5 V, an address search pulse is generated using the short-circuit level (0 V) and on-level (5 V) potential of the sensor, and is transmitted to the sensor via the transmission line 3. It is supposed to be sent out.
[0087]
7 is configured to receive such an address search pulse from the receiver 2 via the transmission line 3, that is, the L and C lines. The transmission unit 49 searches for an address. When receiving a pulse, the CPU 44 of this sensor counts (counts) the number of address search pulses received so far, and this count value (count value) is set in the address section 43 of this sensor. It is determined whether or not the address matches, and when the address matches, the state of the own sensor (on state or off state) is given to the transmission unit 49, so that the transmission unit 49 can, for example, Only when the state is ON, a signal to that effect is sent to the receiver 2 via the transmission line 3, that is, the L and C lines. Specifically, the transmission unit 49 holds, for example, the potential between the L and C of the transmission line 3 at 0 V for a predetermined period as a signal indicating that the state of its own sensor is on when the addresses match. Then, the signal is transmitted to the receiver 2 (held in a short-circuited state for a predetermined period). As a result, the receiver 2 monitors whether the potential between the L and C of the transmission line 3 is maintained at 0 V for a predetermined period, and the potential between the L and C of the transmission line 3 is 0 V for the predetermined period. In this state, it can be specified that the sensor having the address corresponding to the number of address search pulses transmitted so far is in the operating state (ON state).
[0088]
In the example of FIG. 7, it has been described that the sensor is configured as a sensor address sensor. However, any sensor having the configuration of FIG. 2 or FIG. It can be applied to type smoke detectors. Therefore, in the configuration example of FIG. 7, the address unit 43 and the like are not necessarily provided.
[0089]
The functions of the abnormality determination unit 32, level determination unit 33, switching unit 34, and timing control unit 36 in the sensor 30 are provided in the form of, for example, a software package (specifically, an information recording medium such as a CD-ROM). can do. That is, a program for realizing the functions of the abnormality determination unit 32, the level determination unit 33, the switching unit 34, and the timing control unit 36 of the present invention (ie, a program used by the CPU 44 in the case of the sensor of FIG. 7, for example). ) Can be provided in a state of being recorded on a portable information recording medium.
[0090]
In this case, the sensor may be provided with a mechanism for detachably mounting the information recording medium. Further, the information recording medium on which the program and the like are recorded is not limited to the CD-ROM, and a ROM, RAM, flexible disk, memory card or the like may be used. The program recorded in the information recording medium is installed in a storage device of the sensor (for example, the RAM 46 in the sensor having the configuration shown in FIG. 7) when the information recording medium is attached to the sensor. The functions of the abnormality determination unit 32, level determination unit 33, switching unit 34, and timing control unit 36 of the present invention can be realized.
[0091]
【The invention's effect】
As explained above, claims 1 to Claim 6 According to the described invention, the sensor is based on the physical quantity detection means for detecting the predetermined physical quantity, and the physical quantity detected by the physical quantity detection means, Using an abnormality judgment algorithm to determine the nature of an abnormality An abnormality determining means for determining whether or not there is an abnormality, a level determining means for determining whether or not the level of the physical quantity detected by the physical quantity detecting means exceeds a predetermined level, and causing the abnormality determining means to perform processing, or , And a switching means for switching whether to cause the level judging means to perform processing, and when testing the sensor, by switching the level judging means to perform processing by the switching means, Using an abnormality judgment algorithm to judge the nature of the abnormality Even in the case of a sensor having an abnormality determination function (for example, a function to determine fire / non-fire), the test time during the test can be shortened.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a configuration example of a sensor having a function of determining abnormality (for example, fire / non-fire).
FIG. 2 is a diagram showing a configuration example of a sensor according to the present invention.
FIG. 3 is a view showing a modified example of the sensor shown in FIG. 2;
4 is a diagram showing a specific example (on / off type sensor) of the sensor of FIG. 2 or FIG. 3. FIG.
FIG. 5 is a diagram for explaining an operation (particularly, a storage function) of a P-type storage receiver.
6 is a diagram showing another specific example (on / off type sensor) of the sensor of FIG. 2 or FIG. 3. FIG.
7 is a diagram illustrating a hardware configuration example of the sensor of FIG. 2 or FIG. 3;
[Explanation of symbols]
2 receivers
3 Transmission line
30 sensor
31 Physical quantity detector
32 Abnormality judgment part
33 Level judgment part
34 Switching section
35 Output section
36 Timing controller
11 First monitoring unit
12 Property determination unit
13 Second monitoring unit
14 Output section
15 Property storage
16 Reading section
17 Third monitoring unit
18 Re-output unit
42 A / D converter
43 Address part
44 CPU
45 ROM
46 RAM
47 Nonvolatile memory
48 Status output section
49 Transmitter

Claims (6)

A physical quantity detecting means for detecting a predetermined physical quantity, an abnormality judging means for judging whether or not there is an abnormality using an abnormality judging algorithm for judging the nature of the abnormality based on the physical quantity detected by the physical quantity detecting means, and a physical quantity detecting means Level determination means for determining whether or not the level of the detected physical quantity exceeds a predetermined level, and switching means for switching whether the abnormality determination means performs processing or whether the level determination means performs processing. A sensor characterized by comprising.   2. The sensor according to claim 1, further comprising timing control means for controlling a switching timing in the switching means.   3. The sensor according to claim 1, wherein the time required for the determination process of the level determination means is shorter than the time required for the determination process of the abnormality determination means.   2. The sensor according to claim 1, wherein the switching means switches so that the level judging means performs processing when the sensor is tested.   3. The sensor according to claim 2, wherein the timing control means is configured such that when the sensor is turned on, when a predetermined signal is input from the receiver, or when a specific transmission signal is input from the test jig, A sensor which measures a predetermined test period, and the switching unit causes the level determination unit to perform a determination process during a predetermined test period timed by the timing control unit. In a monitoring control system comprising a receiver and a sensor connected to a transmission path from the receiver and monitored and controlled by the receiver, the sensor detects physical quantity detecting means for detecting a predetermined physical quantity; Based on the physical quantity detected by the physical quantity detection means, an abnormality judgment means for judging whether or not there is an abnormality using an abnormality judgment algorithm for judging the nature of the abnormality, and the level of the physical quantity detected by the physical quantity detection means is a predetermined level. Monitoring control characterized by comprising level determining means for determining whether or not the threshold has been exceeded, and switching means for switching whether to cause the abnormality determining means to perform processing or to cause the level determining means to perform processing system.

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