JP3263330B2 - Supervisory control system and sensitivity setting method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a monitoring control system and a sensitivity setting method.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Patent Application Laid-Open No. 56-132690
For the signal, a predetermined sensitivity setting pattern that changes with the passage of time based on the time signal is commanded from the receiver to the detector, and the detection sensitivity of the detector is changed according to the time. A detection device is shown.

FIG. 6 is a diagram showing a configuration example of such a conventional fire detection system. Referring to FIG. 6, this fire detection system includes a receiver 51 and sensors 52-1 to 52-n monitored and controlled by the receiver 51.

[0004] In the receiver 51, a clock means (clock) 53 for measuring the time and sensors 52-1 to 52-52.
A sensitivity table TBL ₀ sensitivity setting information I ₁ ~I _n corresponding to the respective -n is set, the sensitivity information transmitting means 54 for transmitting the sensitivity information to each sensor 52-1 to 52-n
Are provided.

[0005] sensitivity table TBL _0, for example, sensor 52-1 as sensitivity setting information I ₁ corresponding to the sensitivity to 9:00 set to 12% / m, also the time 19:
At 00, information indicating that the sensitivity is set to 8% / m is set,
Further, as the sensitivity setting information I ₂ corresponding to the sensor 52-2, to set the sensitivity to 9:00 in 15% / m, also information to the effect that the sensitivity is set to the time 20:00 12% / m Is set.

In this example, it is assumed that the detector is a smoke detector, and the unit% / m represents the smoke density.

Further, in this example, the sensitivity is determined by an operation threshold level of the sensor (for example, a fire alarm level). When the operation threshold level of the sensor is high,
The sensitivity of this sensor is low (meaning, for example, smoke detectors will only work if the smoke density is high)
Also, when the operation threshold level of the sensor is low, the sensitivity of this sensor is high (for example, in the case of a smoke sensor,
Even if the smoke density is low (meaning even a little smoke) it will work). Although there is such a difference, since the sensitivity and the operation threshold level correspond to each other, the sensitivity and the operation threshold level are hereinafter used as having the same meaning for convenience of explanation. In this case, the sensor compares the actually detected level (for example, smoke density) with the sensitivity (operation threshold level), and when the actually detected level (for example, smoke density) is lower than the sensitivity (operation threshold level), (E.g., not a fire), and when the level actually detected (e.g., smoke density) exceeds the sensitivity (operation threshold level), it is determined to be abnormal (e.g., fire),
A fire or the like can be detected. Therefore, when the sensor is in a noisy environment, the sensitivity is set low (high operation threshold level) to prevent false alarms, and
When the sensor is in a small environment, such as noise, high sensitivity is to (a lower activation threshold level) settings, examples of the sensitivity setting information I ₁ ~I _n of the sensitivity table TBL ₀ is the fact It is set taking into account (taking into account that noise and the like are slightly different between daytime and nighttime).

In such a fire detection system, when the time counted by the time counting means 53 becomes, for example, 9:00, each of the detectors 52-1, 52-2,.
52-n sensitivity information 12 in the 9:00 corresponding to% / m, 15% / m , ..., indexing the 6% / m from the sensitivity table TBL _0, the detector 52 by which the sensitivity information transmitting unit 54 -1, 52-2,..., 52-n. Thus, at time 9:00, the sensitivities of the sensors 52-1, 52-2,..., 52-n are changed from the sensitivities 12% / m, 15% / m,.
Each can be set (changed) to 6% / m.

[0009]

[SUMMARY OF THE INVENTION However, in such a conventional fire detection system, in the receiver 51, it is necessary to store the sensitivity setting information I ₁ ~I _n, are connected a number of sensors in the system, the memory capacity of the corresponding amount for storing the sensitivity setting information I ₁ ~I _n in the receiver 51 there is a problem that becomes necessary.

[0010] Also, the sensitivity setting information I ₁ to I ₁
When storing I _n, the individual detectors 52-1 to 52-n
The sensitivity setting information I ₁ ~I _n has a problem that must be managed in the receiver 51 side with respect to. For example,
Since a lot of sensitivity setting information is referred to at the time of sensitivity switching, there is a problem that the processing of the receiver 51 becomes complicated.

The present invention provides a sensitivity setting for a terminal such as a sensor.
It is an object of the present invention to provide a monitoring control system and a sensitivity setting method capable of reducing the processing load on the receiver side due to (sensitivity switching), and capable of setting (switching) the sensitivity with high reliability in a terminal. The purpose is.

[0012]

In order to achieve the above object, according to the present invention, in a monitoring control system including a receiver and a terminal monitored and controlled by the receiver, the receiver is Having time information sending means for measuring the time and sending the time to the terminal as time information;
The terminal is capable of setting sensitivity setting information in which time and sensitivity are associated with each other. When the sensitivity setting information is set in the terminal, the terminal sets the time from the time information transmitting unit of the receiver. When information is transmitted, the time information is compared with the sensitivity setting information, a sensitivity corresponding to the time information from the receiver is determined, and the determined sensitivity is set as the sensitivity of the terminal. It is characterized by.

According to a second aspect of the present invention, in a monitoring and control system including a receiver and a terminal monitored and controlled by the receiver, the receiver measures time,
The terminal has time information sending means for sending the time as time information to the terminal, and the terminal also has time counting means for counting the time, and when the time information is sent from the time information sending means of the receiver, The time counting means of the terminal adjusts the time in accordance with the time information transmitted from the receiver, and the terminal can set sensitivity setting information in which time and sensitivity are associated with each other. And the terminal, if sensitivity setting information is set in this,
The time information measured by the time measuring means of the terminal is compared with the sensitivity setting information, a sensitivity corresponding to the time information is determined, and the determined sensitivity is set as the sensitivity of the terminal. I have.

Further, according to the third aspect of the present invention, the first aspect
3. The monitoring control system according to claim 2, wherein the terminal is configured to be able to receive a sensitivity information signal in addition to the time information from the receiver, and to receive the sensitivity information signal when the sensitivity information signal is received. It is characterized in that sensitivity is set by an information signal.

Further, according to the invention described in claim 4, according to claim 1,
4. The monitoring control system according to claim 3, wherein the terminal is a sensor or a repeater, and when the terminal is a repeater, the terminal sets sensitivity according to time information. In addition to the above, a function of transmitting a control signal to the outside according to time information can be provided.

According to a fifth aspect of the present invention, in the sensitivity setting method for setting the sensitivity of a terminal, sensitivity setting information in which time and sensitivity are associated with each other can be set in the terminal. When the sensitivity setting information is set, the current time is compared with the sensitivity setting information, a sensitivity corresponding to the current information is determined, and the determined sensitivity is set as the sensitivity of the terminal. I have.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a first configuration example of the monitoring control system according to the present invention. Referring to FIG.
This monitoring control system (for example, a fire detection system) includes a receiver 1 and a terminal 2-1 monitored and controlled by the receiver 1.
To 2-n.

Here, the receiver 1 and each of the terminals 2-1 to 2-n
Is, for example, a predetermined transmission path (line or wireless) 3
Connected by

In the system shown in FIG. 1, the receiver 1 includes a time measuring means (for example, a clock) 11 for measuring time.
A time information transmitting means 12 for transmitting the time information measured by the time measuring means 11 to each of the terminals 2-1 to 2-n via the transmission line 3 is provided.

In the system shown in FIG. 1, each terminal 2-1
To 2-n In the sensitivity table TBL ₁ ~TBL sensitivity setting information I ₁ ~I _n of each terminal 2-1 to 2-n is set
_n are provided respectively. For example, the terminal 2-1, as the sensitivity setting information I _1, the sensitivity to 9:00 1
2% / m, and at 19:00, the sensitivity was set to 8% / m.
is set information that is set to m, also, the terminal 22, as the sensitivity setting information I _2, the sensitivity to 9:00 1
Set to 5% / m, and at 20:00, 12% sensitivity
/ M is set.

In this example, each of the terminals 2-1 to 2-n
Is a smoke detector, and the unit% / m represents the smoke density.

In this example, the sensitivity is determined by the operation threshold level of the terminal (for example, the fire alarm level), as described above. Vessel sensitivity is low
(In the case of a smoke detector, for example, it means that it will not operate unless the smoke density is high), and when the operation threshold level of the detector is low, the sensitivity of this sensor is high (the smoke detector For example, this means that even if the smoke density is low (a little smoke), it will work.) Although there is such a difference, since the sensitivity and the operation threshold level correspond to each other, the sensitivity and the operation threshold level are hereinafter used as having the same meaning for convenience of explanation. In this case, each of the terminals 2-1 and 2-2
-N is, for example, the level actually detected (for example, smoke density)
Is compared with the sensitivity (operation threshold level), and when the actually detected level (for example, smoke density) is lower than the sensitivity (operation threshold level), it is determined to be normal (for example, not a fire), and the actually detected level (for example, When the smoke density exceeds the sensitivity (operation threshold level), it is determined that there is an abnormality (for example, a fire), and a fire or the like can be detected. Therefore, when the terminal is in a noisy environment, the sensitivity is lowered to prevent false alarms.
(High operation threshold level) is set, also the terminal when it is in a small environment, such as noise, high sensitivity (low activation threshold level) better to set the sensitivity setting information I ₁ ~I _n The example is set in consideration of this (considering that noise and the like are slightly different between daytime and nighttime).

[0023] In fact, if the sensitivity setting information I ₁ ~I _n as in the above example to the terminals 2-1 to 2-n are respectively set, each terminal 2-1 to 2-n, the receiver 1 When the time information (current time) is transmitted from the time information transmitting means 12 by, for example, broadcast communication, the transmitted time information (current time) is stored in its own sensitivity table, that is, the sensitivity set in its own. The sensitivity is set (switching control) by collating with the setting information. For example, the receiver 1 sets, for example, 9:00 as time information to each of the terminals 2-1, 2-2,.
When sent to -n, terminal 2-1 refers to the sensitivity setting information I ₁ set in the self-indexing the sensitivity information 12% / m in the 9:00, which terminal 2
Set as the first sensitivity, also the terminal 22 refers to the sensitivity setting information I ₂ that is set to the self, the terminal 22 the sensitivity information 15% / m in the 9:00
Set as sensitivity. Thus, each terminal 2-
, 2-n set (change) the sensitivity according to the current time based on the sensitivity setting information set in the own terminal according to the time information sent from the receiver 1. Can be.

In this case, the time information sending means 12 of the receiver 1 sends the time information to each terminal 2 at predetermined time intervals.
-1 to 2-n, and the predetermined time interval can be set arbitrarily according to circumstances. For example, the sensitivity tables TBL ₁ to TBL ₁ to
TBL _n time setting of information I ₁ ~I _n 9: 18:00: 0
When the time is set in units of hours, such as 0, 19:00, and 20:00, the time information transmitting means 12 of the receiver 1 transmits the time information at one-hour intervals to each of the terminals 2-1 to 2- n.

FIG. 2 is a diagram showing a second configuration example of the monitoring and control system according to the present invention. In the monitoring control system of FIG. 2, the monitoring control system of FIG.
-N. That is, each of the terminals 2-1 to 2-n of the monitoring and control system of FIG.
n, and each of the terminals 2-1 to 2-n sets the sensitivity according to the time based on the sensitivity setting information set in its own terminal according to the time measured by its own time measuring means ( Change). For example, the terminal 21 in accordance with the time counted by the self time counting means 14-1, setting the sensitivity in accordance with the time on the basis of the sensitivity setting information I ₁ set in the self-terminal in the 2-1 (modified ).

In this case, the time information sending means 1 of the receiver 1
The time information transmitted from the terminal 2 to each of the terminals 2-1 to 2-n is:
Time counting means 14-1 to 14- of each terminal 2-1 to 2-n
Used to set the time of n.

Therefore, the time information sending means 12 of the receiver 1
From the terminal clock means 14-1 of each of the terminals 2-1 to 2-n.
Time information only when performing the time adjustment of ~ 14-n
(The current accurate time) may be transmitted. For example, the time interval for transmitting the time information may be set to a long time, for example, on a daily basis or a monthly basis.

As described above, in the system having the configuration shown in FIG.
Each of the terminals 2-1 to 2-n has its own time counting means 14-1.
-14-n, the sensitivity setting information I ₁ -I set in the terminals 2-1 to 2-n.
Since so as to sensitivity setting (changing) in accordance with the time on the basis of the I _n, even fails to receive the time information from the receiver 1 can set the sensitivity (change). Also,
Since the time information from the receiver 1 is used to adjust the time of the time counting means 14-1 to 14-n of each terminal 2-1 to 2-n, the transmission frequency of the time information in the receiver 1 is determined. And each terminal 2-1 to 2-n
When the time is measured by the individual time counting means 14-1 to 14-n, the time counting means 14-1
14-n with the time information from the receiver 1, it is possible to cause the terminals 14-1 to 14-n to perform unified timekeeping.

[0029] As described above, FIG. 1, the monitoring control system of FIG. 2, in the receiver 1, it is not necessary to store the sensitivity setting information I ₁ ~I _n, when many terminals are connected Also does not require a memory capacity for storing the sensitivity setting information in the receiver 1 and eliminates the need to manage the sensitivity setting information for each terminal on the receiver 1 side. )) Can significantly reduce the processing load on the receiver side. Also in this case, the sensitivity can be set (switched) in each terminal with high reliability.

In each of the examples shown in FIGS. 1 and 2, each terminal 2-
1 to 2-n are time clock means 14-1 to 14-
n (Example of FIG. 1), or all of them have the time counting means 14-1 to 14-n (Example of FIG. 2). Terminal 2-1
Some of the terminals out of ~ 2 to -n may not have the time counting means, and some of the other terminals may have the time counting means. In this case, the terminal having no time counting means performs sensitivity setting processing based on the received time information when receiving time information from the receiver.
When receiving the time information from the receiver, the terminal having the time counting means can adjust the time of the time counting means based on the received time information.

In each of the above examples, the terminals 2-1 to 2-1
As 2-n, any type of terminal capable of receiving time information from the receiver 1 can be used.

FIG. 3 is a diagram showing a specific example of one terminal, for example, 2-1 in the monitoring control system of FIG. 1 or FIG. In the example of FIG. 3, this terminal is configured as a sensor (eg, a smoke sensor). That is, the terminal of FIG. 3 detects a physical quantity such as smoke density and converts it into an electric signal (analog signal), and samples the analog signal output from the physical quantity detection section 21 at a predetermined cycle. An A / D conversion unit 22 for converting a digital signal into a digital signal;
An address section 23 in which the address of the sensor is set;
A CPU 24 for controlling the entire sensor such as an abnormality (for example, fire) determination, a ROM 25 storing a control program of the CPU 24, a RAM 26 used as various work areas, and individual data unique to the sensor are stored. The stored nonvolatile memory 27 and the physical quantity detection result (output level from the A / D converter 22) converted into a digital signal by the A / D converter 22 detected by the physical quantity detector 21 are, for example, a predetermined And a result output unit 28 that outputs a signal indicating an operation state (ON state) to the transmission line 3 when the CPU 24 determines that an abnormality such as a fire has occurred beyond the operation threshold level (e.g., fire level) of the receiver. 1 and a transmission unit (communication interface unit) 29 for performing transmission via the transmission line 3 with the communication unit 1. In other words, the terminal in the example of FIG. 3 is configured as a so-called sensor address sensor (according to its detection signal, it belongs to an on-off type sensor).

When the sensor shown in FIG. 3 is used, the receiver 1 is configured as, for example, an addressable P-type receiver, and the transmission line 3 is configured by, for example, L and C lines. In the system of this example, the monitoring level is set, for example, to a point where the potential between the L and C of the transmission line 3 is 24 V, and the operating level (on level) of the sensor is set to, for example, a potential between the L and C of 5 V. However, the short-circuit level can be set, for example, at a point where the potential between L and C is 0V.

In correspondence with such a system configuration, the result output unit 28 of the sensor shown in FIG.
As a signal representing (ON state), the potential between L and C of the transmission line 3 is set to an ON level of 5V.

Further, the receiver 1 includes the detectors 2-1 to 2-n
When at least one of the sensors operates (turns on) and detects that the potential between L and C of the transmission line 3 has reached the on level 5 V, the address search pulse is set to the short circuit level (0 V). It is created by using the potential of the ON level (5 V) of the sensor, and is transmitted to each of the sensors 2-1 to 2-n via the transmission line 3.

The transmission section 29 of the sensor shown in FIG. 3 is configured to receive such an address search pulse from the receiver 1 via the transmission line 3, that is, the L and C lines.
When the address search pulse is received by the transmission unit 29, the CPU 24 of the sensor counts the number of address search pulses received so far, and this count value (count value) is used as the address portion of the sensor. It is determined whether or not the address matches the address set in 23. When the address matches, the state of its own sensor (ON state or OFF state) is given to the transmission unit 29, whereby the transmission unit 29 For example, only when the state of its own sensor is ON, a signal to that effect is notified to the receiver 1 via the transmission line 3, that is, the L and C lines. Specifically, the transmission unit 2
9 holds a potential between L and C of the transmission line 3 at 0 V for a predetermined period of time as a signal indicating that the state of its own sensor is on when the addresses match, for a predetermined period (for a predetermined period, The signal is transmitted to the receiver 1 (while being kept in a short circuit state). Thereby, the receiver 1 monitors whether the potential between L and C of the transmission line 3 has been maintained at 0 V for a predetermined period, and sets the potential between L and C of the transmission line 3 to 0 V for a predetermined period. , It can be specified that the sensor having an address corresponding to the number of address search pulses transmitted up to this time is in the operating state (ON state).

In the present invention, the terminals 2-1 to 2-2
When a sensor having a configuration as shown in FIG. 3 is used as −n, the sensitivity table TBL ₁ corresponding to each sensor is used.
～TBL _n, i.e. the sensitivity setting information I ₁ ~I _n can be set to, for example, non-volatile memory 27 of each sensor. When time information is transmitted from the receiver 1,
In each of the sensors 2-1 to 2-n, the time information from the receiver 1 can be received by the transmission unit 29.

When this terminal (sensor) is provided with the function of the first configuration example, the CPU 24 of the sensor stores the time information from the receiver 1 in the nonvolatile memory 2 of the sensor.
7, the sensitivity corresponding to the time information is determined, and this is determined, for example, in the RAM 26.
And a fire determination process or the like can be performed with the sensitivity (for example, the operation threshold level) set in the RAM 26. Specifically, the sensor compares the level of the actually detected physical quantity (for example, smoke density) with the sensitivity (for example, the operation threshold level) set in the RAM 26, and determines the level of the actually detected physical quantity (for example, the sensitivity threshold level). For example, when it exceeds an operation threshold level), it can be determined as an abnormality such as a fire.

When the terminal (sensor) has the function of the second configuration example, a clock function for measuring time is added to the CPU 24 of the sensor (for example, the CPU 24 has a built-in clock function). In this case, the CPU 24 compares the time information measured by itself with the sensitivity setting information set in the non-volatile memory 27 of the sensor to determine the sensitivity corresponding to the time information. This is set in, for example, the RAM 26,
It is possible to perform a fire judgment process or the like with the sensitivity (for example, the operation threshold level) set in the range. Also, the transmitter 2 of the sensor
9, when the time information from the receiver 1 is received,
24 performs a process of adjusting its own clock function to the time information from the receiver 1, whereby the time of its own clock function can be adjusted.

In the above example, the terminals 2-1 to 2-n
Although described as being configured as a sensor for sensor addresses as described above, the terminals 2-1 to 2-n only need to be able to receive time information from the receiver 1 as described above. The present invention can be applied to any type of sensor (for example, an analog type sensor, an on / off type sensor). Further, the address section 23 and the like need not always be provided. In this case, a general R-type receiver, P-type receiver, or the like can be used as the receiver 1.

The terminals 2-1 to 2-n can be applied not only to sensors but also to any repeaters. FIG. 4 is a diagram illustrating a configuration example of a system in a case where the terminals 2-1 to 2-n are relay devices. Referring to FIG. 4, each terminal, that is, each of the repeaters 2-1 to 2-n is connected to the transmission line 3 from the receiver 1, and each of the repeaters 2-1 to 2-n has , Sensors 16-1 to 16-n are connected.

Here, the sensors 16-1 to 16-n do not have to be of the intelligent type as shown in FIG. A sensor having only the physical quantity detection section corresponding to the physical quantity detection section 21 can be used.
In this case, each of the repeaters 2-1 to 2-n is, for example, a part excluding the physical quantity detection unit 21 in the sensor having the configuration of FIG. 3, that is, the address unit 23, the CPU 24, the ROM 25, and the R
A configuration including an AM 26, a non-volatile memory 27, a result output unit 28, and a transmission unit 29 can be employed. In other words, the sensor having the configuration shown in FIG. 3 is divided into two parts, the part of the physical quantity detection unit 21 is provided to the sensors 16-1 to 16-n, and the parts other than the physical quantity detection unit 21 are connected to the relay 2-1. ~ 2
−n. Note that the address section 23 and the like need not always be provided.

In such a configuration, for example, the repeater 2-1
Converts the detection signal (analog signal) from the sensor 16-1 into A
The A / D converter 22 periodically samples the sample and converts it into a digital value. The CPU 24 determines an abnormality such as a fire based on the output (digital value) from the A / D converter 22.
When it is determined that there is an abnormality such as a fire, the result output unit 28 sets the potential between L and C of the transmission line 3 to an on level of 5 V, and informs the receiver 1 that there is an activated sensor (repeater). Can be. As a result, the receiver 1 sequentially sends out address search pulses. When the transmission unit 29 of each of the repeaters 2-1 to 2-n receives such an address search pulse from the receiver 1, the CPU 24 of each repeater counts the number of address search pulses received so far. (Count), and this count value (count value) is
It is determined whether or not the address matches the address set in No.3, and when the address matches, the state (ON state or OFF state) of the sensor corresponding to itself is given to the transmission unit 29. Sends a signal to that effect to the receiver 1 via the transmission line 3, that is, the L and C lines, only when the state of the sensor corresponding to itself is on.
Specifically, the transmission unit 29, when the addresses match,
As a signal that the state of its own sensor is on,
For example, the potential between L and C of the transmission path 3 is kept at 0 V for a predetermined period (and kept in a short-circuit state for a predetermined period) and transmitted to the receiver 1. Thereby, the receiver 1 monitors whether the potential between L and C of the transmission line 3 has been maintained at 0 V for a predetermined period, and sets the potential between L and C of the transmission line 3 to 0 V for a predetermined period. When the state is held, the sensor connected to the repeater having the address corresponding to the number of address search pulses transmitted up to this time is activated.
(ON state).

Then, the repeater 2-1 can have the function of the first or second configuration example described above.

Further, when the terminals 2-1 to 2-n of the present invention are repeaters, each repeater, when receiving the time information from the receiver 1, according to the time information, for example, a controlled terminal (shutter). And fire doors).

As described above, according to the present invention, the terminals 2-1 to 2-
The present invention is applicable regardless of whether n is a sensor or a repeater.

In one system, each terminal 2
The present invention can be similarly applied to a case where a part of -1 to 2-n is a sensor and another part is a repeater (even when these are mixed). FIG. 5 is a diagram showing a specific example of a system in which a part of each of the terminals 2-1 to 2-n is a sensor and another part is a repeater. In the example of FIG. Is an analog sensor, terminal 2-2 is a sensor having the configuration of FIG.
The case where the terminal 2-3 is a repeater is shown. As described above, the terminals 2-1 to 2-n may be of different types and types.

In the above example, the time information is the hour and minute information such as 9:00, but the time information may be month, day, day of the week, holiday / weekday, hour, minute , Seconds, etc. can be used.

Further, in each of the above monitoring and control systems, each of the terminals 2-1 to 2-n can receive not only the time information from the receiver but also the sensitivity information signal as in the system of FIG. In this case, when receiving the sensitivity information signal, each of the terminals 2-1 to 2-n can be configured to set the sensitivity based on the received sensitivity information signal. That is, each terminal 2-1
2-n, when a sensitivity information signal other than the time information is received, the sensitivity table set to itself, that is, the sensitivity setting information is ignored, and the sensitivity is set by the received sensitivity information signal. Can also. In this case, a sensitivity other than the preset sensitivity setting information can be set for each terminal.

In each of the above-described examples, the monitoring control system is, for example, a disaster prevention system. In this case, the detector is, for example, a fire detector. However, the present invention is not limited to the disaster prevention system. It can be applied to any system such as a system. In this case, the present invention is not limited to a fire detector, but can be applied to any sensor such as a security sensor.

[0051]

As described above, according to the first to fifth aspects of the present invention, sensitivity setting information in which time and sensitivity are associated with each other can be set in the terminal. When the sensitivity setting information is set, the current time is compared with the sensitivity setting information, a sensitivity corresponding to the current information is calculated, and the calculated sensitivity is set as the sensitivity of the terminal. It is not necessary to have sensitivity setting information for each terminal, it is only necessary to output time information, and it is possible to significantly reduce processing of the receiver when performing sensitivity setting (change) processing of the terminal.

In particular, according to the second aspect of the present invention, the terminal is further provided with time counting means for counting time, and when time information is transmitted from the receiver, the time counting means of the terminal is provided with:
The time is adjusted according to the time information transmitted from the receiver.The terminal compares the time information measured by its own time measuring means with the sensitivity setting information set for itself. Therefore, the sensitivity corresponding to the time information is calculated, and the calculated sensitivity is set as the sensitivity of the terminal, so that the frequency of transmitting the time information in the receiver can be reduced, and the terminal can receive the signal from the receiver. Even if the reception of the time information fails, the sensitivity can be set (switched), and the reliability of the system can be further improved.

According to the third aspect of the present invention, the terminal is configured to be able to receive not only the time information but also the sensitivity information signal from the receiver. Sensitivity can be set by the received sensitivity information signal, so that sensitivity values other than the sensitivity value set in the sensitivity setting information can be set, increasing the flexibility of the system. Can be.

According to the fourth aspect of the present invention, when the terminal is a repeater, the terminal has a function of setting the sensitivity according to the time information, and further transmits an external control signal according to the time information. Since the transmission is performed, the control according to the time can be reliably and efficiently performed even for an external device such as a controlled terminal (a shutter or a fire door).

[Brief description of the drawings]

FIG. 1 is a diagram showing a first configuration example of a monitoring control system according to the present invention.

FIG. 2 is a diagram illustrating a second configuration example of the monitoring control system according to the present invention.

FIG. 3 is a diagram showing a specific example of a terminal used in the monitoring control system of FIG. 1 or 2;

FIG. 4 is a diagram showing a specific example of a terminal used in the monitoring control system of FIG. 1 or 2;

FIG. 5 is a diagram showing a specific example of a monitoring control system according to the present invention.

FIG. 6 is a diagram showing a configuration example of a conventional fire detection system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiver 2 Terminal (sensor, repeater) 3 Transmission path 16 Sensor 21 Physical quantity detection part 22 A / D conversion part 23 Address part 24 CPU 25 ROM 26 RAM 27 Non-volatile memory 28 Result output part 29 Transmission part

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-116996 (JP, A) JP-A-3-222095 (JP, A) JP-A-8-96285 (JP, A) JP-A-5-96285 73781 (JP, A) JP-A-56-132690 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) G08B 25/00 510 G01D 21/00 G05B 23/02 G08B 17/00

Claims (5)

(57) [Claims] 1. A monitoring and control system comprising a receiver and a terminal monitored and controlled by the receiver, wherein the receiver measures time and transmits the time as time information to the terminal. And the terminal includes:
The sensitivity setting information in which the time and the sensitivity are associated can be set, and when the sensitivity setting information is set in the terminal, the time information is transmitted from the time information transmitting unit of the receiver. When the time information is compared with the sensitivity setting information, a sensitivity corresponding to the time information from the receiver is determined, and the determined sensitivity is set as the sensitivity of the terminal. Control system. 2. In a monitoring and control system comprising a receiver and a terminal monitored and controlled by the receiver, the receiver measures time and transmits the time to the terminal as time information. And the terminal also has time counting means for counting the time, and when the time information is sent from the time information sending means of the receiver, the time counting means of the terminal is sent from the receiver. In accordance with the time information, the time is adjusted, and further, sensitivity setting information in which time and sensitivity are associated with each other can be set in the terminal, and the terminal sets sensitivity setting information to the sensitivity setting information. Is set, the time information measured by the time measuring means of the terminal is compared with the sensitivity setting information, a sensitivity corresponding to the time information is determined, and the determined sensitivity is set as the sensitivity of the terminal. A surveillance control system characterized in that it is adapted to: 3. The monitoring control system according to claim 1, wherein the terminal is configured to be able to receive not only time information but also a sensitivity information signal from a receiver. A monitoring and control system, wherein the sensitivity is set based on the received sensitivity information signal. 4. The monitoring control system according to claim 1, wherein the terminal is a sensor or a repeater, and when the terminal is a repeater, the terminal is: A monitoring control system characterized in that it has a function of sending a control signal to the outside in accordance with time information in addition to a function of setting sensitivity according to time information. 5. A sensitivity setting method for setting sensitivity of a terminal, wherein the terminal can set sensitivity setting information in which time and sensitivity are associated with each other, and the terminal sets the sensitivity setting information. If so, a current time is compared with the sensitivity setting information to determine a sensitivity corresponding to the current information, and the determined sensitivity is set as a terminal sensitivity.