JPH04317B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a security information collection method used in a security system that detects abnormal information such as fire or intrusion occurring within a security area.

Conventionally, a plurality of anomaly detectors are installed within a predetermined security area, and anomaly information from these detectors is converted into electrical signals and sent to a specific monitoring device by wired or wireless means. A security system has already been proposed in which a monitoring device transmits a monitoring signal to monitor the presence or absence of an abnormality in an installed abnormality detector. The configuration of such a security system consists of a group of abnormality detectors installed at appropriate locations within a security area such as inside a building, and a transmitting/receiving device attached to the abnormality detectors that transmits abnormality information or receives monitoring signals. , and a monitoring device installed at a predetermined location within the security area to receive abnormality information from the transmitting/receiving device and report it to a monitoring station or transmit a monitoring signal from the monitoring station. In such a security system, the method of collecting security information such as security start, security release, or abnormality is to turn on the power of the transmitting/receiving device for a certain period of time using a standby signal and set it as the time when the device becomes ready for reception (the state where the device is ready to receive). After setting in advance the number of relay devices connected to the monitoring device and the number of transmitting/receiving devices connected to each relay device, and setting the time for transmitting and receiving information between one transmitting/receiving device and the relay device, all The transmission/reception time (boring time) required between the transmitter/receiver and all the relay devices has been calculated, and a time slightly longer than the total transmission/reception time has been set as the reception ready time. By setting the time in this way, security information collection has been prevented from being missed, but on the other hand, due to extensions, renovations, and layout changes to buildings within the security area, anomaly detectors have been added or relocated, and transmitter/receiver equipment has also been added. In this case, the total transmission and reception time will of course increase by the amount of additional equipment, exceeding the reception ready time, but the reception ready time cannot be set arbitrarily long to save battery power. By installing new monitoring equipment, we have prevented the loss of security information.

However, with this type of system, it is necessary to consider installing additional monitoring equipment every time a building is frequently expanded or renovated or the layout is changed, which increases costs and lacks flexibility. A method of setting a longer reception ready time by allowing some margin in the number of devices and relay devices was also considered, but in this case, even if the number of transmitting/receiving devices and relay devices installed is small, batteries will be wasted unnecessarily. This posed a problem from the viewpoint of battery conservation.

The present invention has been proposed to solve the above-mentioned problems, and its purpose is to constantly compare the time required between the transmitting/receiving device and the relay device and the reception ready time, and to determine the reception ready time. Based on the idea of equipping the relay device with a resetting request function that requests the monitoring device to reset the reception ready time if there is no time to spare, monitoring devices will be added in conjunction with building extensions, renovations, layout changes, etc. To provide a security information collection method in a security system that is effective in preventing loss of security information and saving battery power.

An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIG. 1, a security system for implementing the security information collection method according to the present invention includes a group of abnormality detectors 40a to 40 disposed at appropriate locations within a security area.
n, transmitting/receiving devices 30a to 30 attached to these
n. A relay device 2a that issues commands to each transmitting/receiving device or receives abnormality information and supervises the plurality of transmitting/receiving devices; and a relay device 2a that supervises the plurality of repeating devices and sends the abnormality information to a remote monitoring station (not shown). It consists of a monitoring device AC that reports by wire or wirelessly. In such a configuration, the monitoring device AC sends a command signal indicating the start and release of security for the security area to the transmitting/receiving device via the relay device. A standby signal is issued to enable reception (ready for reception), and a command signal is subsequently transmitted. In addition, a group of abnormality detectors connected to the transmitting/receiving device are placed at appropriate locations within the security area to report any intrusion into the security area, fire, gas leak, emergency calls, etc. and transmitted to the monitoring device via the relay device. Furthermore, in order to save power, the transmitting/receiving device becomes ready to receive by the standby signal as described above, and subsequently receives command signals such as start security, release security, etc. transmitted from the monitoring device via the relay device, and responds to this command signal. Accordingly, the transmitting circuit, abnormality detection circuit, etc. of the transmitting/receiving device are turned on or off.

FIG. 2 shows a circuit configuration of a relay device for implementing the security information collection method according to the present invention. The relay device includes a transmitting/receiving section that includes a transmitting circuit 12 that transmits decoded signals to the transmitting/receiving device, and a receiving circuit 18 that receives information from the transmitting/receiving device and sends it to the monitoring device, and a transmitting/receiving section that decodes signals from the monitoring device. a decoding circuit 11 for setting the reception ready time, a timer 13 for setting the reception ready time, and a memory 15 for storing the status of all transmitting and receiving devices.
an arithmetic circuit 14 that reads out the memory contents and totals the transmission/reception time required between the transceiver and the transmitter/receiver; a comparator circuit 16 that compares the result of the arithmetic operation with the reception ready time of the timer; and a comparator circuit 16 that encodes the comparison result and sends it to the monitoring device. and a resetting requesting section consisting of an encoding circuit 17.

In such a configuration, a standby signal (shown in FIG. 3) is simultaneously sent from the monitoring device AC to all the relay devices 2a to 2n. When the decoding circuit 11 receives the standby signal and determines that the signal is a standby signal, it starts the timer 13 and starts integrating the reception ready time.
2 transmits a standby signal (shown in FIG. 3) to the transmitting/receiving device via the antenna 19. After receiving the standby signal, the transmitter/receiver turns on the power and becomes ready to receive the command signal for a predetermined period of time. Next, from the monitoring device, the first relay device 2
A command signal indicating the start of security is sent to a. When the decoding circuit that receives the command signal determines that the signal is a command signal, the signal is sent to the arithmetic circuit 14,
The arithmetic circuit reads the status of the transmitting/receiving devices, ie, the number of installed transmitting/receiving devices, from the memory 15 in which the status of all transmitting/receiving devices is stored, calculates the time required for transmission/reception, and sends the result to the comparison circuit 16.
Comparison circuit 16 compares the calculated time with the remaining reception ready time of timer 13, and if the remaining reception ready time is longer than the calculated time, it sends a signal to decoding circuit 11 and further outputs the command signal. A signal is sent to the transmitting circuit 12, and the transmitting circuit transmits a command signal (shown in FIG. 3) to the transmitting/receiving circuit via the antenna 19. Each transmitting/receiving device 30a to 30n collects security information (as shown in FIG. 3) with the relay device 2a in a polling mode. Relay device 2a
When the collection of security information of all the transmitting/receiving devices supervised by the controller is completed, this data is transferred all at once to the monitoring device (as shown in FIG. 3). When the monitoring device receives this data transfer, it sends a transmission end signal (as shown in FIG. 3) to the relay device 2a and finishes collecting security information regarding the relay device 2a. This method is also used for the next relay device 2b, and when the security information collection for the relay device 2b is completed, the security information collection is sequentially carried out for the next relay device 2c until there is time remaining in the reception ready time. .

Relay device 2 that received the command signal (am in Figure 3) when it progressed to the m-th relay device 2m
m) comparator circuit 16 is connected to timer 1 as described above.
If the remaining reception ready time from step 3 is compared with the time calculated by the calculation circuit 14 and it is determined that the reception ready time is insufficient, that is, the subsequent boring time is longer, the comparison result is coded. The signal is sent to the conversion circuit 17. The encoding circuit immediately requests the standby request signal (shown in FIG. 3) to send the standby signal again to the monitoring device. When the monitoring device receives this monitoring signal, it again transmits a standby signal to all the transmitting and receiving devices via all the relay devices and sets the reception ready time again. In this case, the relay device that transmitted the request signal and subsequent devices may be set as ready to receive. After the relay device 2m becomes ready for reception in this manner, it collects security information in the same manner as described above.

In this embodiment, the number of transmitting/receiving devices is stored in the memory 15, and the arithmetic circuit reads and calculates the number of transmitting/receiving devices to integrate the transmitting/receiving time, but the transmitting/receiving time is set in advance and stored in the memory. This also allows the arithmetic circuit to be omitted. Further, in this embodiment, the relay device is separated from the monitoring device, but the relay device may include only a transmitting/receiving section and the reset request section may be incorporated into the monitoring device.

As explained in detail above, in order to save the power supply of the transmitter/receiver, the power of the transmitter/receiver is intermittently turned on except during the reception ready time, and only when a command signal is received, a standby signal is sent prior to this. The system is ready for reception for a certain period of time, i.e. the power is turned on and security information is collected in polling mode between the relay device and if the reception ready time is insufficient, the relay device sends a standby request signal to the monitoring device and receives it again. It is designed to set the ready mode.

By applying the security information collection method according to the present invention to a security system using wireless, sufficient security information can be collected without the need to add equipment due to building extensions, renovations, layout changes, etc. effective.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a security system, FIG. 2 is a circuit block diagram of a relay device for implementing the security information collection method according to the present invention, and FIG.
FIG. 3 is a diagram showing the temporal transition of each signal in the security information collection method according to the present invention. Explanation of codes, 1a to 1n...Relay block, 2
a to 2n...relay device, 30a to 30n...transmission/reception device, 40a to 40n...abnormality detector, 11...
...Decoding circuit, 12...Transmission circuit, 13...Timer, 14...Arithmetic circuit, 15...Memory, 16...
... Comparison circuit, 17 ... Encoding circuit, 18 ... Receiving circuit, 19 ... Transmitting and receiving antenna, AC ... Monitoring device, L ... Communication line.

Claims (1)

[Scope of Claims] 1. A plurality of anomaly detectors disposed at appropriate locations within a security area, a transmitting/receiving device attached to the anomaly detectors and transmitting anomaly information and receiving command signals using weak signals; A transmitting/receiving unit that receives abnormality information from the transmitting/receiving device and transmits a command signal, and a reset request that compares the receiving ready time with the transmitting/receiving time and requests resetting of the receiving ready time if the transmitting/receiving time is longer. and a monitoring device that sends out a standby signal to set the reception ready, and then sends out a command signal indicating start of security, release of security, etc., and collects information from the relay device, A method for collecting security information in a security system, characterized in that the monitoring device resets a reception ready time based on a standby request signal from the relay device. 2. Claim 1, characterized in that the relay device comprises a transmitting/receiving unit that receives abnormality information from the transmitting/receiving device and transmits command signals, and is connected to the monitoring device by wire or wireless means. Security information collection method described. 3. The security information collection method according to claim 1, wherein the monitoring device includes the reset request section.