JPH02268400A - Crime-preventing transmission controller - Google Patents

Abstract

PURPOSE:To improve reliability by providing a communication abnormality deciding means in a crime preventing equipment, transmitting telegraphic messages to respective plural terminal equipments at fixed time intervals and notifying the occurrence of abnormality when an acknowledge (ACK) telegraphic message is not received from the terminal equipment. CONSTITUTION:A communication abnormality deciding means 39 of a crime- preventing monitor 24 prepares the telegraphic message addressing an own station by a data transmission telegraphic message preparing means 35 and transmits the message to each terminal equipment 23. The equipment 23 receives the message by an own station address setting means 25 and a receiving means 26, and returns the ACK telegraphic message through a data transmission tele graphic message preparing means 30 to the device 24. When the ACK telegraphic message is not received, the communication abnormality deciding means 39 of the device 24 decides that the communication abnormality has been occurred between the device 24 and the said terminal equipment. Then, a communication abnormality notifying means 38 is driven and the occurrence of the abnormality is notified. Thus, the reliability of a crime preventing system is improved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a transmission control device between devices arranged in a decentralized manner, and particularly relates to a crime prevention system.

Conventional technology A transmission control method that connects each device with an electrical communication network and transmits control signals to each other for the purpose of centrally controlling multiple devices or monitoring the current status of the device. is being used.

-For example, when controlling the load in a general household, commercial 10
There is a method of using a 0V power line as a transmission communication path. This method superimposes a communication signal voltage at a sufficiently higher frequency on the AC voltage of the power line to communicate between each device, and since special wiring for control is not required, it is time consuming and costly to install. It has the characteristic that it requires less.

Here, the term "terminal equipment" refers to the load state detection function that detects the load state, the communication function that sends and receives signals to and from each device, and the own station.
This is a combination of the r dress setting function. Also,
Another type of device is a monitor that has a communication function to send and receive signals to and from each device, a monitor display function to display whether each device is in the ON or OFF state, and a function to set the partner station address corresponding to each device. There is equipment.

A transmission control method using a power line will be described below with reference to the drawings. FIG. 4 is a block diagram of a conventional transmission control method using a power line. 1 is a commercial 100V power line, which is located in a general household. The devices 2 and 3 are a combination of loads 4 and 5 and terminal devices 6 and 7, respectively, and are connected to the power line 1, respectively. As mentioned above, the terminal devices 6 and 7 have a load state detection function, a communication function, and a self-station address setting function, and can detect the 0N10FF of the loads 4 and 5 connected to themselves, and also
communicates with each device using it as a transmission communication path. At this time, the own address setting means 8 and 9 have the function of setting the own address. Also, the load explained here is
For example, sensor devices include human body detection sensors that use infrared rays and intrusion sensors that detect the opening and closing of windows and doors. on the other hand,
The monitoring device 10 is a type of device, is connected to the power line 1, and has a communication function, a monitor display function, and a partner station address setting function as described above. As described above, the terminal device controls the state of the load according to the commands from the monitoring device 10, and sends a signal indicating the state of the load as a result of the control to the monitoring device 10 with its own station address added thereto. In response to this, the monitoring device 10 detects the address 1 of the other station corresponding to the received own station address.
The monitor display lights 15 to 1 and 8 of 1 to 14 are turned on or off to perform monitor display. Furthermore, security state change switch 1
9, and the crime prevention state can be changed between a warning state and a normal state. Furthermore, it is equipped with a crime prevention status monitor 20, which makes it possible to check the current crime prevention status. Also, only when the crime prevention system is in the alert state, the notification means 21 makes a notification sound with a signal indicating the OF, F state (ONN state open/closed state OFFFF state open state) from the terminal devices 6 and 7 to alert the user. It is designed to evoke

Problems to be Solved by the Invention However, with the above configuration, it is difficult to turn off the terminal equipment.
It is necessary to ensure that the status information reaches the monitoring equipment, and if it does not reach the monitoring equipment, it will not be possible to determine whether there is a human intrusion.

Therefore, in such a crime prevention system, it has been desired to develop a system that enables more reliable communication.

SUMMARY OF THE INVENTION Therefore, in order to solve the above-mentioned conventional problems, it is an object of the present invention to provide a crime prevention transmission control device that enables highly reliable communication.

Means for Solving the Problems In order to achieve the above object, the crime prevention transmission control device of the present invention includes a plurality of terminal devices that monitor the output of sensor devices and detect human intrusion, and a signal from the terminal devices. a crime prevention monitoring device that receives the information and monitors the state of the sensor device and switches the crime prevention monitoring state between a normal state and a warning state; and a transmission communication path that transmits data between the terminal device and the crime prevention monitoring device. The terminal equipment includes a sensor monitoring means for monitoring the status of the sensor equipment that is the load, a own address setting means for setting the own address, and a terminal device that transmits data transmission messages sent from the crime prevention monitoring equipment to the own station. a receiving means for receiving a crime prevention state; a memory means for storing whether the security state received by the receiving means is a warning state or a normal state; A data transmission message creation means that determines that there has been an intrusion and creates an intrusion message indicating human intrusion, or creates an ACK message to be sent back to the transmission addressed to the own station, and a data transmission message creation means. the crime prevention monitoring device includes a crime prevention state management means for managing a crime prevention posture, and a crime prevention posture changing means for changing the crime prevention posture. , a timer for making a certain time, and a message for changing the crime prevention state of the Mf terminal device to a warning state or a normal state, or a timer for each of the plurality of terminal devices at a certain time interval according to the output of the timer. A data transmission message creation means that creates a data transmission message for the address, and a data transmission message creation means that transmits the message created by the data transmission message creation means and continues to transmit it at fixed time intervals as long as the message is an alert status message based on the output of the timer. a transmitting means, a receiving means for receiving a message transmitted from a terminal device, a communication abnormality reporting means for notifying a communication abnormality with the terminal device, and an ACK message sent by the terminal device in response to a message intended for each terminal device. The crime prevention transmission control device is equipped with a communication abnormality determining means that determines that a communication abnormality has occurred between the communication abnormality notification means and the terminal equipment by determining that the communication abnormality notification means is not received. be.

Effects The effects of this configuration will be explained below. First, in the crime prevention monitoring device, when the contents of the crime prevention management means are changed by the crime prevention posture changing means, the data transmission message creating means creates a message indicating the contents of the crime prevention posture. The transmitting means will transmit this, but at this time, only the alert state message will continue to be transmitted at fixed time intervals based on the output from the time measuring means. The terminal device receives these telegrams with its receiving means and stores the crime prevention posture in its storage means. Next, the terminal device is limited to the case where the contents of the storage means are in the alert state and the contents of the sensor monitoring means for monitoring the state of the sensor device are in the open state.
When it is determined that a person has intruded, the data transmission message creating means creates a message indicating the intrusion, and the transmitting means repeatedly transmits this message.

On the other hand, apart from the above operations, the following operations are performed. The crime prevention monitoring device uses a data transmission message generating means to create a data transmission message directed to the own address of each of the plurality of terminal devices at regular time intervals based on the output of the timer. The transmitting means transmits this message to each terminal machine. The terminal device receives this by its own address setting means and receiving means, and sends an ACK (acknowledge) message back to the crime prevention monitoring device by means of a transmitting means via a data transmission message creating means. If this ACK message is not received, the communication abnormality determination means of the crime prevention monitoring device determines that a communication abnormality has occurred with the corresponding terminal device, and drives the communication abnormality notification means to notify the occurrence of the abnormality. .

EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a security transmission control device according to an embodiment of the present invention. Transmission communication channel (commercial 100V power line) 22
A terminal device 23 and a crime prevention monitoring device 24 are connected to the terminal device 23 and the security monitoring device 24 . A sensor device such as a door sensor is connected to the terminal device 23 as a load. The terminal device 23 includes an own station address setting means 25 for determining the own station, and a receiving means 2 for receiving the message on the transmission communication path 22 by the own station address setting means 25.
6, storage means 27 for storing whether the data transmission message received by the receiving means 26 is a message related to crime prevention, whether it is a warning state or a normal state, and monitoring the state of the load 28 connected to the terminal device 23. sensor monitoring means 29;
Only when the contents of the storage means 27 are in a warning state and the signal of the sensor monitoring means 29 is a signal indicating an open state, a message indicating an intrusion is created indicating that a person has intruded, or the receiving means 26
When receiving a telegram intended for the own station other than a telegram related to crime prevention posture, the data transmission telegram creation means 30 creates an ACK telegram, and the data transmission telegram creation means 30 transmits the telegram created by the data transmission telegram creation means 30, The transmission means 31 repeatedly transmits the message to the transmission channel 22 only when the message indicates an intrusion. On the other hand, the crime prevention monitoring device 24 includes a crime prevention state management means 32 for managing the crime prevention posture;
A crime prevention state changing means 33 for changing the crime prevention posture, a clock means 34 for creating a certain period of time, and a telegram for changing the crime prevention posture of the terminal device 23 from a warning state to a normal state;
A data transmission message creation means 35 creates a data transmission message for the local address of each of the plurality of terminal devices 23 at fixed time intervals based on the output of the timer 34, and transmits the message created by the data transmission message creation means 35. and transmitting means 36 which continues transmitting at fixed time intervals based on the output of clocking means 34 only when the message is a warning state message, receiving means 37 which receives the message transmitted from terminal device 23, and terminal device 23. The communication abnormality reporting means 38 notifies the communication abnormality with the terminal device 23 by determining whether the ACK message sent by the terminal device 23 is not received in response to the message directed to each terminal device. The communication abnormality determining means 39 determines that an abnormality has occurred and issues a notification instruction to the communication abnormality notification means 38.

Specifically, the security state changing means 33 is a switch or the like, and the communication abnormality notification means 38 is a buzzer or the like, which notifies the user of a communication abnormality with the terminal device 23.

The concrete operation of the security transmission control device configured as described above will be explained below with reference to FIGS. 2 and 3. Figure 2・? j'%3 Figure shows crime prevention monitoring equipment 24 and terminal equipment 2 on the commercial 100V power line, which is the transmission communication path 22.
An example of the exchange of messages with 3 is shown. Figure 2 shows
This shows a case where the crime prevention system is on alert and then an intrusion occurs. First, the crime prevention monitoring device 24 transmits the normal state via the data transmission message creation means 35 and the transmission means 36. Thereafter, the crime prevention state changing means 33 performs an operation to change the crime prevention state, and a signal indicating the alert state is transmitted via the data transmission message creation means 35 and the transmission means 36. This warning state is transmitted to the transmitting means 3 at regular intervals by the clocking means 34.
Sent from 6.

As a result, the storage means 27 of the terminal device 23 stores the alert state. In this state, when the sensor monitoring means 29 that monitors the door sensor 28, which is a load, recognizes that it is open, it repeatedly sends an intrusion notification signal indicating that someone has entered through the data transmission message creation means 30 and the transmission means 31. be done. Thereafter, as described above, the normal state is transmitted from the crime prevention monitoring device 24 by the crime prevention state changing operation. Furthermore, the terminal device 23 will repeat the intrusion notification until this transmission is received.

FIG. 3 is an explanatory diagram illustrating a case where the security terminal device 24 transmits a data transmission message to a plurality of terminal devices 23 and determines a communication abnormality. The communication abnormality determination means 39 of the crime prevention monitoring device 24 transmits data transmission telegrams at fixed time intervals to the terminal devices (1) to (n) based on the output from the clocking means 34, and receives an ACK telegram from the corresponding terminal device. When the communication abnormality determining means 39 determines that the communication abnormality is not received, it is determined that a communication abnormality has occurred with the corresponding terminal device, and a notification instruction is issued to the communication abnormality notifying means 38. This shows that the ACK message from the terminal device (1) could not be received.

In this case, the judgment was made based on the ACK message for the data transmission message sent by the own station, but when there are multiple security monitoring devices, the ACK message for the data transmission message sent by another station is used.
The determination may be made by telegram. Furthermore, even if a device that combines some or all of the functions of a crime prevention monitoring device and a sensor device is assumed as another device, the gist of the present invention will not be affected in any way.

Effects of the Invention As described above, the present invention provides a terminal device having a local address setting means, a receiving means, a storage means, a sensor monitoring means, a data transmission message creation means, and a transmitting means, and a crime prevention state management means.
By having a crime prevention monitoring device that has a crime prevention status change means, a time measurement means, a data transmission message creation means, a transmission means, a reception means, a communication abnormality notification means, and a communication abnormality determination means, and a transmission communication path, it is possible to It is possible to reliably receive signals indicating an intrusion and to notify in advance of abnormalities in communication with terminal equipment, thereby providing a crime prevention transmission control means that makes the crime prevention system more reliable. It is something.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an example of an implementation of the present invention, Figs. 2 and 3 are explanatory diagrams explaining the specific exchange of messages in the same embodiment, and Fig. 4 is a configuration diagram showing a conventional example. It is. 22...Transmission communication path (commercial 100V power line), 23.
...Terminal equipment, 24...Security monitoring equipment, 25... Own station address setting means, 26, 37...Receiving means, 27
...Storage means, 29...Sensor monitoring means, 30.3
5... Data transmission message creation means, 31, 36... Transmission means, 32... Crime prevention state management means, 33... Crime prevention state changing means, 34... Timing means, 38... Communication abnormality Notification means, 39...Communication abnormality determination means.

Claims (1)

[Claims] A plurality of terminal devices monitor outputs of sensor devices and detect human intrusion, and receive signals from the terminal devices to monitor and monitor the state of the sensor devices, and set crime prevention monitoring state to normal state and warning state. It is composed of a crime prevention monitoring device to be switched, and a transmission communication path for transmitting data between the terminal device and the crime prevention monitoring device. A local station address setting means for setting an address, a receiving means for receiving a data transmission message addressed to the local station from among the data transmission messages sent from the crime prevention monitoring device, and a receiving means for determining whether the crime prevention state received by the receiving means is a warning state or a normal state. A storage means to be stored, and only when the contents of the storage means are in a warning state and the signal of the sensor monitoring means is open, it is determined that a person has intruded, and an intrusion message indicating the intrusion is created or sent to the own station. ACK sent back to
The crime prevention monitoring device has a data transmission message creation means for creating a message, and a transmission means for transmitting the message created by the data transmission message creation means and repeatedly transmitting the message only if the message is an intrusion message. a crime prevention state management means for managing the crime prevention state, a crime prevention state changing means for changing the crime prevention state, a timekeeping means for creating a certain period of time, and a message or timekeeping means for changing the crime prevention state of the terminal device between a warning state and a normal state. data transmission message creation means for creating a data transmission message for the local address of each of the plurality of terminal devices at fixed time intervals based on the output of the means; transmitting means that continues to transmit alert state messages at regular intervals based on the output of the timer; receiving means that receives messages transmitted from the terminal equipment; and communication abnormality reporting means that reports abnormality in communication with the terminal equipment; Communication that determines that a communication abnormality has occurred between the terminal devices by determining that an ACK message sent by the terminal device is not received in response to a message intended for each terminal device, and issues a notification instruction to the communication abnormality notification means. A crime prevention transmission control device having an abnormality determination means.