JPH0249586B2 - KEIBITANMATSUSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an information sending means of a security terminal device in a remote monitoring system, and particularly to a regularly transmitted information sending means.

Conventionally, this type of security system has been executed according to the procedure shown in FIG. That is, security information such as an alarm signal or a scheduled outgoing signal detected by a sensor in a security terminal device is automatically dialed via a subscriber telephone line to send the information to an alarm reception center, and the center receives this information. When a message is received, the terminal number and security information are automatically printed and displayed, and in the case of an alarm, the alarm buzzer sounds and a security guard is dispatched to the scene immediately.

However, if the telephone line is disconnected or the security terminal device malfunctions, the alarm reception center cannot confirm that an alarm has occurred. To this end, the security terminal device has a scheduled call function that informs the reception center whether the terminal itself is operating normally or whether the telephone line has been disconnected. For example, if a terminal makes a scheduled call every 2 hours, the receiving center will predict that the scheduled call will arrive within 2 hours + α, and if the scheduled call does not arrive within this time, the terminal will function normally. It is determined that the telephone line is not working or that an accident has occurred in which the telephone line is disconnected, and the same processing as when an alarm signal is received is performed. Therefore, in order to further increase the reliability of security, it is possible to shorten the interval between scheduled calls, but on the other hand, if the interval between scheduled calls is shortened, the number of scheduled calls will increase and telephone charges will increase. There was a drawback.

By the way, the probability that an intrusion accident or the like will occur is not constant, and is extremely high at certain dates and times. Therefore, in order to improve the quality of security and keep telephone charges to a certain level, the interval between scheduled calls should be made variable, making the interval shorter on days when alarms occur more frequently, and lengthening them when they are less frequent. This is effective.

However, in conventional terminals, the time interval between scheduled calls is fixed, so if you want to change it, you have to go to the terminal and reset the time interval for scheduled calls.

The present invention has been made to compensate for the above-mentioned drawbacks inherent in the conventional technology, and therefore, an object of the present invention is to have a function of varying the scheduled transmission interval based on the scheduled transmission information from the reception center, The purpose of the present invention is to provide a new security terminal device that can keep telephone charges low and improve the quality of security by shortening the regular call interval on days when alarm frequency is high and extending the interval on days when alarm frequency is low. .

The above-mentioned object of the present invention is to provide a security terminal device that sends security signals to an alarm reception center via a subscriber telephone line; A network control unit that is dial-activated by an alarm transmission activation signal from the alarm storage unit and the redial control unit described later; a telephone number storage unit that sends a telephone number to the network control unit; After completion, a center signal receiving section receives a control signal from an alarm receiving center, and is activated by a dial end signal from the network control section and reset by a partner response signal detected by the center signal receiving section. a line timer unit, an acknowledgment timer unit that is activated by an alarm transmission end signal from the information sending unit described later and reset by a normal reception signal detected by the center signal receiving unit; a redial control unit that counts busy signals and reception error signals output when each reception timer unit times out, restarts the network control unit until a certain value is reached, and is reset by the normal reception signal; a scheduled transmission control section that is activated by an arbitrarily set scheduled transmission control signal detected by the signal receiving section and sends a scheduled transmission signal to the alarm storage section after an arbitrarily determined time; and the center signal reception section. The device is started by a data transmission command signal detected by the device, and sequentially sends out the terminal number from its own terminal number section that stores its own terminal number and the security information from the alarm storage section, and finally sends out a termination signal. This is achieved by a security terminal device characterized in that it is equipped with an information sending unit that provides information.

Next, a preferred embodiment of the present invention will be specifically explained with reference to the drawings.

FIG. 2 is a block diagram showing one embodiment of the present invention. In FIG. 2, reference number 1 indicates a telephone number storage unit that stores the telephone number of an alarm reception center (not shown), for example, on a pinboard or IC memory, and the telephone number in this storage unit is stored in the network control unit 5.
The numbers are sequentially sent to the telephone line a via the network control unit 5 in accordance with the dialing timing of . The own terminal number part 2 stores its own unique number which is sent from the information sending part 8 to the telephone line a via the data line changeover switch 12 and the network control part 5 after the connection of the terminal with the receiving center is completed. ing. The scheduled transmission control section 3 is
It has a highly accurate clock and the center signal receiving section 1
It has a function of transmitting a regular transmission signal i to the alarm storage section 6 after a certain period of time in accordance with a regular transmission control signal h sent from 0. Although the sensor etc. 4 is not a component according to the present invention, it is described for convenience of explanation. A plurality of sensors are provided, and each sensor sends a corresponding signal to the alarm storage section 6.
The alarm storage unit 6 starts sending an alarm to the network control unit 5 when a signal is received from the scheduled transmission control unit 3 or when a signal from a sensor or the like 4 is detected and there is a difference from the previous state. Outputs signal b. Further, when the transmission is completed or abandoned, the difference storage section (alarm storage section 6) is reset and the new state is stored as the previous state. Upon receiving the activation signal b, the network control section 5 acquires the telephone line a and sends the telephone number from the telephone number storage section 1 to the telephone line a at the timing of the selection signal. When the network control unit 5 completes dialing, it sends a dial completion signal c to the line timer unit 7, and puts the line timer unit 7 into a busy monitoring operation. Further, the network control unit 5 connects the telephone line a to the data line d in an alternating current manner after dialing is completed, and returns to the initial state when the transmission operation is completed.

The line timer section 7 is preset in consideration of the 20 to 30 seconds required for switching connection, and outputs a busy signal i when the time exceeds this time. Information sending unit 8
uses the MF signal used in the pushphone to send own terminal number n, security information p, and termination signal.
After converting it into an MF signal and receiving a data transmission command f at a signal rate of 100 to 400 ms, it sequentially sends all the digits to the telephone line a via the data line changeover switch 12, the data line d, and the network control unit 5. Finally, a transmission end signal q is output to the confirmation timer section 9. Confirmation timer section 9
If the normal reception signal that the reception center sends when normal reception is completed does not arrive within a specified time, for example, within 5 seconds after receiving the transmission completion signal q, it is considered a reception error. Outputs a reception error signal k. The center signal receiving unit 10 includes several types of band filters, for example, nominally 600Hz, 1200Hz,
It has filters with characteristics such as 1800Hz and 2400Hz, and receives and detects signals of each frequency sent from the center via telephone line a and data line d. The center signal receiving unit 10 further includes a series of
Out of 1800Hz, the first is a response signal, the second is a data transmission command, and the third is determined to be a normal reception signal, and sends a response signal e, data transmission command f, and normal reception signal (acknowledgement) g to each control section. Furthermore, signals of other frequencies are outputted to the scheduled transmission control section 3 as a scheduled transmission control signal h.

The redial control unit 11 sets the number of redials in advance to, for example, three times including the first time, counts the busy signal j and the reception error signal k, determines whether it is less than three times, and after counting, After a certain period of time, for example, 50 seconds, an alarm transmission activation signal b is output to the network control unit 5. Furthermore, when the count reaches three times, since three activations have already been completed, a transmission abandonment signal l is sent to the alarm storage section 6 to return the state to the initial state. Therefore, the alarm storage section 6 abandons sending out the security information, but stores it. Further, when the redial control unit 11 outputs another security information, that is, a new alarm transmission activation signal b from the alarm storage unit 6, it is reset by the reset signal m, and is normally reset to the normal reception signal g. It will then be reset.

Next, one embodiment of the scheduled transmission control section, which is a feature of the present invention, will be described with reference to the drawings. In FIG. 3, which shows a specific block configuration of the scheduled transmission control section 3, the clock generation section 13 is constituted by a highly accurate crystal oscillator, etc., and generates a basic clock signal r that determines the time interval of the scheduled transmission. The timer control section 14 receives the scheduled transmission control signal h sent from the center signal receiving section 10, sends out a timer control signal s according to the received signal, and controls the timer section 15.
- Preset any one of 17. The timer sections 15 to 17 are different timers, for example, the timer section 15 is set as a 30-minute timer, the timer section 16 is set as a one-hour timer, and the timer section 17 is set as a two-hour timer. Therefore, when the timer section 15 is preset by the timer control signal r sent from the timer control section 14, the timer section 15 starts operating and sends out the scheduled transmission signal i after 30 minutes.
Further, the time setting of this timer section is arbitrary, and by having more timer sections, it is possible to increase the types of scheduled transmission intervals. In this embodiment, three timer sections are provided for convenience of explanation, but also:
Preset multiple values with only one timer section,
It is also possible to create multiple timings.

Next, the operation of the present invention will be explained using FIG.
When an event such as an alarm (including a scheduled call) occurs at a terminal, the network control unit 5 of the terminal dials the alarm reception center. When a call is automatically received at the alarm reception center, the reception center sends out a 1800Hz signal twice in succession. The first is a response signal e, which causes the line timer section 7 to be reset and stop functioning. The second signal at 1800 Hz is a data transmission command f, and by this signal f, the terminal number n, various security information p, and end signal are converted from the information sending unit 8 into an MF signal and sent to the alarm receiving center via the network control unit 5. Sent out. After receiving the signal, the alarm reception center sends regular transmission control signals, i.e. 600Hz, 1200Hz,
One frequency of 2400 Hz is sent back to the terminal device, and then the third frequency of 1800 Hz, that is, the normal reception signal g is sent back. Here, the scheduled transmission control signal is 600Hz.
When the signal is received, the timer section 15 is preset, when the signal is received at 1200 Hz, the timer section 16 is preset, and when the signal is received at 2400 Hz, the timer section 17 is preset.

As explained above, the present invention has the function of performing a scheduled call operation based on a scheduled call control signal from an alarm reception center, so that the scheduled call interval can be changed arbitrarily, telephone charges can be reduced to a certain extent, and security can be trusted. You can increase your sexuality.

Although the present invention has been described above with reference to one preferred embodiment thereof, this is merely an example, and the present invention is not limited to the embodiment described herein, and there may be cases where it deviates from its scope. It is easy to make various modifications and changes without any trouble. For example, in this embodiment, a timer and its control circuit are used as a means for generating the scheduled transmission signal of the scheduled transmission control section, but it is possible to modify it by using a memory circuit and its control circuit instead. Of course.

[Brief explanation of drawings]

Fig. 1 is an operational flow for explaining a conventional security terminal device, Fig. 2 is a block configuration diagram showing an embodiment of the security terminal device according to the present invention, and Fig. 3 is a scheduled transmission that is the main part of the present invention. FIG. 4 is a block diagram showing a specific example of the control section, and is an operational flow for explaining the security terminal device according to the present invention. 1... Telephone number storage section, 2... Own terminal number section,
3... Scheduled transmission control unit, 4... Sensor, etc., 5...
Network control unit, 6... Alarm storage unit, 7... Line timer unit, 8... Information sending unit, 9... Acknowledgment timer unit, 1
0...Center signal receiving unit, 11...Re-dial control unit, 12...Data line changeover switch, 13...
Clock generation section, 14... Timer control section, 15,
16, 17...Timer part, a...Telephone line, b...
...Alarm transmission start signal, c...Dial end signal,
d...data line, e...response signal, f...data transmission command, g...normal reception signal, h...scheduled transmission control signal, i...scheduled transmission signal, j...busy signal, k... Reception error, l...Transmission abandonment signal, m
...Reset signal, n...own terminal number, p...security information, q...transmission end signal, r...clock signal, s...timer control signal.

Claims (1)

[Claims] 1. In a security terminal device that sends security signals to an alarm reception center via a subscriber telephone line, there is an alarm storage unit that detects and stores signals such as alarms and scheduled transmissions from sensors, etc., and the alarm storage unit and the following. A network control unit that is activated for dialing by an alarm transmission activation signal from the redial control unit, a telephone number storage unit that sends a telephone number to the network control unit, and a telephone number storage unit that sends a telephone number to the network control unit, and a telephone number storage unit that sends a telephone number to the network control unit, and a telephone number storage unit that sends a telephone number from the alarm receiving center after dialing in the network control unit is completed. a center signal receiving unit that receives a control signal from the network controller; a line timer unit that is activated by a dial end signal from the network control unit and reset by a partner response signal detected by the center signal receiving unit; The confirmation timer section is started by the alarm transmission end signal from the information sending section and reset by the normally received signal detected by the center signal receiving section, and the line timer section and confirmation timer section each time out. The network controller is restarted by counting the busy signal and reception error signal output when the call is received, and restarts the network control unit until they reach a certain value. a scheduled transmission control section that is activated by an arbitrarily set scheduled transmission control signal and sends a scheduled transmission signal to the alarm storage section after an arbitrarily determined time; and data transmission detected by the center signal receiving section. an information sending section that is activated by a command signal and sequentially sends out the terminal number from its own terminal number section that stores its own terminal number and the security information from the alarm storage section and finally sends out a termination signal; A security terminal device comprising: