JPS63285699A - Wireless security system - Google Patents

Abstract

PURPOSE:To reduce the transmission of a wireless transmission for notching and to reduce the power consumption by providing the wireless transmitter with an annunciation control part which stops the transmission of a proper-time trepass annunciation signal when the output frequency of a detection signal exceeds a specific value. CONSTITUTION:If the detection signal is generated until the reference time setting timer of the annunication control part 11 enters a time-up state after starting operation, a signal transmission part 12 sends a trepass annunciation signal V, a counter which counts the output frequency of the detection signal counts up, and it is decided whether or not the counted value reaches a specific value at which the transmission is stopped. In this case, when the output frequency of the detection signal increases and the counted value of the counter exceeds the specific value, an operation annunciation signal indicating that a nonwarning state is entered is sent out to inform a wireless receiver side of that and the nonwarning state where no trepass annunciation signal V is not sent out even if the detection signal is outputted is entered. Consequently, the transmission of the trepass annunciation signal V for nothing is reduced to the reduce the power consumption of the wireless transmitter.

Description

Detailed Description of the Invention [Technical Field] The present invention relates to a wireless security system that transmits and receives an intrusion notification signal using a wireless signal.

[Background Art 1] In general, this type of wireless security system that transmits and receives intrusion notification signals by wireless signals detects an intruder when a detection output is obtained from an intruder detection sensor 1, as shown in FIG. Announcement signal ■ to antenna 3
The device is composed of a wireless transmitter 2 that transmits a signal from the wireless transmitter 2, and a wireless receiver 5 that operates the notification means 6 when the intrusion notification signal (2) is received via the antenna 4. By the way, in such a security system, the wireless receiver 5 is in an alert state or a non-IF 71! A system that punishes the means for setting the status so that only important security information such as fire, gas, and emergency calls is received during the non-alert period, and unimportant security information such as intrusion information is not received. many. In such a security system, there is no need to transmit the intrusion notification signal V from the wireless transmitter 2 during the non-warning period, but in the conventional example, the transmitting operation of the wireless transmitter 2 is not necessary. Since there was no means to stop it, the wireless transmitter 2 sent a meaningless intrusion alarm signal V.
If the wireless transmitter 2 is transmitted frequently, the power consumption of the wireless transmitter 2 increases, which is a big problem especially when a battery is used as the power source of the wireless transmitter 2. For example, when the wireless transmitter 2 is installed in a place where many people come and go, such as a store or an office building, when the store is open,
Passers-by during non-vigilance periods such as during work hours,
Every time a customer is detected, a meaningless intrusion notification signal ■ will be sent, which will lead to rapid battery consumption and maintenance (battery replacement) will be troublesome. There was a problem in that the battery could run out during the warning period, resulting in false alarms. Furthermore, sending meaningless intrusion notification signals will unnecessarily increase the amount of traffic on communication lines, and if people come and go frequently, this may hinder the transmission of important security information. Ta. In order to solve this problem, it is considered that the wireless transmitter 2 is provided with a means for stopping the transmission of the intrusion notification signal V from the wireless transmitter 2 only during the non-warning period based on a command from the wireless receiver 5 side. However, there is a problem that circuits such as a receiving section and a command determining section are required on the wireless transmitter 2 side, making the circuit configuration complicated and increasing costs.

[Objective of the Invention 1 The present invention has been made in view of the above points, and its purpose is to reduce the meaningless transmissions of a wireless transmitter and save power; To provide a wireless security system that does not interfere with other wireless communications, has a simple circuit configuration, and is inexpensive.

r finRIf1r8f Mayuzumi 1 (Configuration → The present invention is composed of a wireless transmitter that transmits an intrusion notification signal when a detection output is obtained from an intruder detection sensor, and a wireless receiver that receives the intrusion notification signal. In a wireless security system, wasteful power consumption of the wireless transmitter can be reduced by providing the wireless transmitter with a notification control unit that stops transmitting the intrusion notification signal for an appropriate time when the output frequency of the detection signal exceeds a predetermined value. To provide a wireless security system that can reduce the amount of noise, has a simple circuit configuration, and is inexpensive.

(Embodiment 1) Fig. S1 and Fig. 2 show an embodiment of the present invention, which includes a wireless transmitter 2 that transmits an intrusion notification signal ■ when a detection output is obtained from the intruder detection sensor 1; In a wireless security system comprising a wireless receiver 5 that operates a notification means 6 when an intrusion notification signal V is received, the intrusion notification signal is output for an appropriate time when the output frequency of the detection signal exceeds a predetermined value. The wireless transmitter 2 is provided with a notification control W111 for stopping the transmission of (2). Here, in the embodiment, the wireless transmitter 2 is formed of a signal reception g10, a notification control section 11, a signal transmission section 12, and a power supply section 13, and the notification control section 11 includes a detection signal output frequency. A counter is provided to detect lc!, and this counter is controlled at a constant value by a timer for setting a reference time. rI! By resetting at one interval, the output frequency is determined by detecting the number of outputs of the detection signal per unit time, and when the counter value exceeds a predetermined value, an intrusion alarm signal ■ is sent. I'm trying to stop it. In this case, when the timer for setting the reference time for measuring the number of outputs per unit time expires, the intrusion notification signal will be transmitted from that point on when the number of outputs of the detection signal reaches a predetermined value. The notification control unit 11 is configured to stop the notification.

Further, the notification means 4 is formed of an intrusion indicator lamp, an alarm buzzer, or the like. FIG. 3 shows an example of the structure of the intrusion notification signal V transmitted from the wireless transmitter 2, which is formed by a house code HC for preventing interference, a unit code UC, and a notification signal VDS indicating intrusion detection. In addition to the above-mentioned intrusion alarm signal V, the wireless receiver 3 also receives a fire detection signal, a gas leak detection signal,
It is designed to receive and notify various security information such as an emergency call signal, and is also provided with a changeover switch for switching between the nine precepts state and the non-alert state, as in the conventional example. Furthermore, in the embodiment, the notification control unit 11 is configured to restart the transmission of the intrusion notification signal V when the output frequency of the detection signal becomes equal to or less than a predetermined value; The notification control unit 11 may be formed to have a hysteresis characteristic so that the transmission of the intrusion notification signal V is resumed when the second predetermined value smaller than the second predetermined value is reached. Furthermore, in order to prevent abuse, it goes without saying that the predetermined value for determining whether to stop or restart the transmission of the intrusion notification signal (2) may be set to any value within a predetermined range. Furthermore, in the embodiment, the intrusion notification signal V
The notification control unit 11 is configured to transmit an operation notification signal to notify when the transmission is stopped or restarted, so that the wireless receiver 5 side can grasp the operating state of the wireless transmitter 2. .

@4 [ is a 7a-chart showing the operation of the embodiment,
If there is a detection signal between the start of the reference time setting timer of the notification control site and the time-up, the signal transmitter 12 will transmit the intrusion notification signal V, and the detection signal will also be transmitted. A counter that counts the number of outputs is incremented, and it is determined whether the counted number has reached a predetermined number of times at which transmission is to be stopped. Here, when the output frequency of the detection signal increases and the count number of the counter exceeds a predetermined number of times, an operation notification signal indicating that the state is in a non-alert state is transmitted and this fact is notified to the wireless receiver side. At the same time, even if a detection signal is output, the intrusion notification signal V is not transmitted, resulting in a non-alert state.

Next, even in the non-alarm state, the output frequency of the detection signal is still checked, and when the count falls below the predetermined number of times to restart the transmission of the intrusion notification signal V, the alarm state is entered. It transmits an operation notification signal to notify the wireless receiver 3 side of the operation, and returns to the alert state of transmitting an intrusion notification signal V when the detection signal is output.

In this case, by setting the predetermined number of times to resume calling to be smaller than the predetermined number of times to determine whether to stop calling, a hysteresis characteristic is imparted, and #! ! 9 It is possible to avoid the inconvenience of being returned. 6 As described above, in the embodiment, the wireless transmitter 2 determines the output frequency by using a coefficient of the number of times the detection signal is output per reference time. However, by setting the intrusion alarm signal V to a non-9 commandment state in which the intrusion alarm signal V is not transmitted when the output frequency is high, it is possible to reduce the meaningless transmission of the intrusion alarm signal ■ and save power on the wireless transmitter. This is advantageous when the wireless transmitter 2 is powered by a battery. In addition, meaningless communication may cause other communication (fire,
It is designed so that it does not interfere with the transmission of gas leakage, emergency call information, etc. On the other hand, in the present invention, the wireless receiver 5 is turned off when there are many people coming and going.
Focusing on the fact that the wireless transmitter 2 is often set to the alert state, the wireless transmitter 2 is set to the non-alert state during this period, and the wireless transmitter 2 is set to the non-alert state by a command from the wireless receiver B5 side. This results in a wireless security system that has a simpler circuit configuration and is cheaper than the case where the wireless transmitter 2 is set to the wireless receiver 5. Based on the alert/non-alert state of the transmitter 2, the wireless receiver 5 can determine whether there are many or few people coming and going, and it is also possible to prevent crimes by focusing on places where there are few people coming and going. It becomes possible.

(Embodiment 2) FIG. 6 is a 70-chart showing another embodiment, and when the elapsed time from the output of the previous detection signal to the output of the new detection signal exceeds a predetermined value, an intrusion alarm signal is sent. The notification control unit 11 is configured to restart transmission of V.

Now, when the detection signal is output, the time is memorized, and when a new detection signal is output, the time from the previous output to the current output is calculated, and the transmission of the intrusion alarm signal V is resumed at this time. When the detection signal exceeds a predetermined period of time, an operation notification signal indicating that the intrusion notification signal V is transmitted when the detection signal is output is transmitted to indicate the transition to the warning state, and the transition to the warning state is made. There is.

[Effect of the Invention J As described above, the present invention includes a wireless transmitter that transmits an intrusion notification signal when a detection output is obtained from an intruder detection sensor, and a notification means that transmits an intrusion notification signal when the intrusion notification signal is received. A wireless security system configured with an operating wireless receiver, in which the wireless transmitter is provided with a notification control unit that stops transmitting the intrusion notification signal for an appropriate time when the output frequency of the detection signal exceeds a predetermined value. , it is possible to save power by reducing meaningless transmissions from the wireless transmitter, and it is also possible to determine whether or not the wireless transmitter should transmit an intrusion alarm signal based on the output frequency of the detection signal. Therefore, compared to the case where commands are sent from the wireless receiver side, it is possible to provide a wireless security system with a simpler circuit configuration and lower cost.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of a wireless security system according to the present invention, Fig. 2 is a main block circuit diagram of an embodiment of the present invention, Figs.
The figure is an explanatory diagram of the operation of another embodiment. 1 is a sensor, 2 is a wireless transmitter, 5 is a wireless receiver, and 11 is a notification control section. Agent Patent Attorney Ishi 1) Ai 7th 4th R! ! J

Claims (7)

[Claims] (1) In a wireless security system consisting of a wireless transmitter that transmits an intrusion notification signal when a detection output is obtained from an intruder detection sensor, and a wireless receiver that receives the intrusion notification signal, the detection signal is A wireless security system characterized in that a wireless transmitter is provided with a notification control section that stops transmitting an intrusion notification signal for an appropriate time when an output frequency exceeds a predetermined value. (2) The wireless security system according to claim 1, characterized in that the notification control section is configured to restart the transmission of the intrusion notification signal when the output frequency of the detection signal becomes equal to or less than a predetermined value. . (3) A patent characterized in that the notification control unit is configured to restart the transmission of the intrusion notification signal when the output frequency of the detection signal reaches a second predetermined value smaller than the predetermined value at the time of stopping the transmission. A wireless security system according to claim 1. (4) The notification control unit is configured to restart the transmission of the intrusion notification signal when the elapsed time from the output of the previous detection signal to the output of the new detection signal exceeds a predetermined value. A wireless security system according to claim 1. (5) When the number of outputs of detection signals reaches a predetermined value before the timer for setting the reference time for measuring the number of outputs of detection signals per unit time times out, the intrusion alarm signal will be activated from that point on. 2. The wireless security system according to claim 1, wherein the notification control section is configured to stop the transmission. (6) Claims 1 to 5 characterized in that the notification control unit is formed to send an operation notification signal to notify when the transmission of the intrusion notification signal is stopped and the transmission is resumed. Wireless security system. (7) The wireless security system according to any one of claims 1 to 3, wherein the predetermined value for determining whether to stop transmitting or restarting the intrusion notification signal is set to an arbitrary value within a predetermined range.