JPH03166696A - Wireless confirmation monitor system - Google Patents

Abstract

PURPOSE:To make a decision immediately and generate a warning when a child who puts on a wireless transmitter exits from the site of multiple dwelling house by confirming a signal sent back from the wireless transmitter at all times by a wireless transmitter receiver arranged in the fiexed area of the site, etc. CONSTITUTION:An inquiry signal is sent from the side of a center monitor receiver 3 provided in a control center 2 to respective wireless transmitter receivers 4 in the system at a constant period, and each wireless transmitter receiver 4 decides a signal sent back to the size of the center monitor receiver 3. Consequently, it can be confirmed that the child who puts on the wireless transmitter 6 is in the site (hatched), but a warning is outputted unless any of the wireless transmitter receivers 4 in the system can receive the radio wave signal from the wireless transmitter 6.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention uses weak radio waves to confirm the presence of animals or humans allowed to freely move within a certain area. and install it on the system to be monitored. [Conventional technology j For safety reasons, it is desirable for children and other children to be constantly monitored by a specific person such as a parent, but considering various circumstances, constant monitoring by a specific person is not necessary in most cases. It is possible. However, with the recent increase in the size of apartment complexes, the areas in which children can be active have also increased, and parental supervision of children has become increasingly inadequate. This trend of joint surveillance of children has become a reality that cannot be ignored from the perspective of preventing crime and fraud. [Problem to be solved by the invention] The present invention was developed in view of the above circumstances, and
Humans and animals who are allowed to move freely within a designated area,
The purpose is to provide a system that can be confirmed and monitored using a wireless system using weak radio waves. [Means for Solving Issues and Problems] The system of the present invention proposed to achieve the above objectives is to install a dedicated wireless transmitter in an area where devices, objects, people, etc., each having a wireless transmitter, can move freely. The configuration consists of multiple wireless transmitting/receiving devices connected to a central monitoring receiver via signal lines, and the reply signal sent from the wireless transmitter is received by the wireless transmitting/receiving device and sent to the central monitoring receiver. The monitoring receiver of the vehicle determines whether or not the vehicle is inside the area (corresponding to claim 1).
In a first embodiment of the system of the present invention, a wireless transmitting/receiving device sends a radio wave signal with a TD code corresponding to the wireless transmitter to be monitored into the area, and checks the ID of the wireless transmitter. Corresponding to the code, the wireless transmission W side adopts a control method that returns a response signal when receiving a radio signal, and in this case, the wireless transmission aS may add its own ID code to the response signal. However, it is also possible to have a configuration in which such an ID code is not added (corresponding to W requirement 2). In the second method, a wireless transmitter attached to a human or animal to be monitored outputs a radio wave signal with an ID code added at a certain period, and the wireless transmitter/receiver mill receives this radio wave signal and centralizes it. A control method is adopted in which the information is transmitted to a monitoring receiver (corresponding to claim 3). In the system of the present invention having such a configuration, the wireless transmitting/receiving device and the central monitoring receiver are connected by a dedicated signal line, but in this case, the central monitoring receiver and the wireless transmitting/receiving device are connected by a set of signal lines. It would be convenient to simplify the wiring if a multiplex transmission control method using polling processing was adopted in which the central monitoring receiver is the am and the wireless transmitter/receiver is the slave station. (corresponds to item 4). In addition, in such a system of the present invention, the central monitoring receiver determines whether or not there is a response signal from the wireless transmitter and its level, which is returned from each wireless transmitter/receiver, and determines the level of the response signal from the wireless transmitter attached. It is determined whether a human or animal is present within the monitoring area, but if it is possible to compare and analyze the reception strength of the emitted reply signal between wireless transmitting and receiving devices in that case, it would be possible to Since it is possible to determine whether the device exists in a location closest to the device, it is also possible to know the approximate location within the area (corresponding to claim 6).
．． [Function] The present invention has the following effects. In the invention system proposed in claim 1, if a human or animal to which a wireless transmitter is attached goes outside a certain monitoring area,
This can be immediately identified because the radio signal received by the wireless transmitter/receiver from the wireless transmitter becomes weak or becomes unable to respond or reply. Further, in the invention system described in claim 2, the above-described determination is made by the method in which the wireless transmitter responds to calls from the wireless transmitter/receiver ilia one by one. In the system according to the third aspect of the invention, the above-mentioned determination is made by transmitting a radio signal with an ID code attached from the wireless transmitter to the wireless transmitting/receiving device at a predetermined period. Furthermore, in the invention system described in claim 4, the exchange of signals between the wireless transmitting/receiving device and the centrally provided monitoring receiver is performed by polling processing using a time division multiplex transmission system. In the system according to claim 6, the wireless transmitter is attached to the central monitoring receiver so that the wireless transmitting/receiving devices in the system compare and analyze the intensity levels of the radio signals received from the wireless transmitter. It is also possible to determine the approximate location of humans and animals within the area. [Example] The system of the present invention will be explained below based on an example. Figure 1 shows a schematic configuration of the system of the present invention, and particularly shows an example in which the system is applied as a confirmation and monitoring system for infants in an apartment complex. In the figure, 1 (#1 to #
n) is a building housing a plurality of residential units in an apartment complex, and 2 is a management center equipped with a central monitoring receiver 3. The wireless transmitting/receiving device 4 is installed at a suitable location on the premises of the apartment complex, on poles 5 (which may be existing utility poles) erected at appropriate intervals, or at a suitable location within each residential building. The wireless transmitter 6 of No. 41! has a pendant-shaped main body. I. As shown in Figure 6, in addition to the neck strap 7 that can be hung and attached to the neck or clothing of a child 8, etc., a portable strap such as a card type is also used. ．． In such a system, an inquiry signal is sent at regular intervals from the central monitoring receiver 3 installed in the Sugari Center 2 to each wireless transmitting/receiving device 4 in the system, and the wireless transmitting/receiving device 4 transmits a central monitoring/receiving signal. By determining the reply signal returned to the aircraft 311, the infant with the wireless transmission 116 attached is located within the premises (indicated by diagonal lines).
If it is confirmed that the wireless transmitter 6 is present, and none of the wireless transmitter/receivers 4 in the system can receive the radio signal from the wireless transmitter 6, an alarm is output. Here,
The monitoring receiver 3 is determined by determining the response from the wireless transmitter 6, the presence or absence of a transmitted signal, and the reception level thereof. In addition, in such a system of the present invention, a radio wave signal to which an ID code corresponding to the wireless transmitter 6 to be monitored is transmitted by the wireless transmitting/receiving device 41!1 is transmitted within the area as an interrogation signal, and the rD
On the wireless transmission IIS side that supports the code, a control method that returns a response signal when receiving a radio signal is possible, and the block diagram in Figure 2 shows the basic configuration of the wireless transmitter adopted in this case. It shows. That is, the wireless transmitter 4 shown in this figure receives an interrogation signal transmitted in the form of a radio wave signal from the wireless transceiver 4, and sends a reply signal to the wireless transceiver 4 in response to the interrogation. A front end section 62 having an antenna 6l for returning the signal in the form of a radio wave signal, and an ID code matching determination section for determining whether the interrogation signal from the wireless transmitting/receiving device 4 is an interrogation of itself. 63, and the ID code setting section 64 has a unique ! assigned to itself! D code can be set. 65 is a signal generating section that generates a response signal in response to the interrogation signal from the wireless transmitting/receiving device 4. The ID code set in the wireless transmitter 6 is added to this response signal by the ID code setting section 64, and the front end l! 16
2, the front end unit 62 converts the signal into a radio wave signal, and transmits the signal to the wireless transmitting/receiving device 4. In this figure, the wireless transmitter 611 adds its own ID code to the response signal and sends it back, but in order to simplify the system, it is also possible to configure the wireless transmitter 611 to transmit without adding such an ID code. good. In addition, 6a is an emergency transmission switch, and when an emergency situation occurs, an emergency signal can be transmitted to the wireless transmitting/receiving device 4 side by operating it with a finger or the like as shown in FIG. Figure 3 shows that a wireless transmitter attached to a person or animal to be monitored outputs a radio wave signal with an ID code added at regular intervals, and the wireless transmitting/receiving device receives the monitoring signal by simply receiving this radio signal. FIG. 4 is a block diagram showing the basic configuration of a wireless transmitter 4' used when a control method of transmitting a transmission signal to an aircraft is adopted. Identical parts corresponding to the configuration in FIG. 2 are given the same reference numerals and explanations are omitted;
A regular transmission signal with an ID code set in the code setting unit 64 is sent to the front end unit 62, and after converting it into a radio signal, the front end unit 62
The configuration is such that the signal is transmitted to the wireless transmitting/receiving device 4 through the antenna 6l. 61st! 1 shows the wiring relationship between the wireless transmitting/receiving device 4 and the central monitoring receiver 3. A plurality of wireless transceivers v1 and 4 are connected to a central monitoring receiver 3 via dedicated signal lines rlJ, and in these
Polling processing is performed using a so-called time-division multiplex transmission method in which the monitoring receiver 3 is used as a master station and the wireless transmitter/receiver station 4 is used as a small station. This shows the format of the signal sent from to the signal line rjlJ. In such a polling processing method, as shown in FIG. 7, after the start signal STO, address data AD assigned to the wireless transmitting/receiving device to be inquired is added, and control data CD for the inquiry is added. , after the parity check CH, a reply waiting time RD is provided, and a reply signal from the wireless transmitting/receiving device 4 that has made an inquiry within this reply waiting time RD is sent to the signal line rlJ, and the monitoring receiver 3 receives this reply signal. The above judgment is made by decoding. FIG. 8 is a block diagram showing the basic configuration of the wireless transmitter/receiver. The wireless transmitting/receiving device 4 includes a front end section 41 having an antenna 4a, a signal receiving section 42, and a signal generating section 44 in order to transmit and receive signals with the wireless transmitter 6.
A multiplex transmission transmitting/receiving section 45 is provided between the monitoring receiver 3 and the monitoring receiver 3. When the interrogation start signal is transmitted from the monitoring receiver 3 via the multiplex transmission transceiver 46, the signal generator 44 starts interrogating the wireless transmitter 6 in the system. The generated interrogation signal is sent to the front end unit 41, where it is converted into a radio wave signal and transmitted from the antenna 4a. ID codes assigned to all wireless transmitters 6 in the system are added to this interrogation signal. A response signal transmitted from the wireless transmitter 6 that received the call is sent from the antenna 4a to the front end section 41, and further sent to the signal receiving section 42, where the ID code is determined. The ID codes assigned to all wireless transmitters 6 in the system are stored in the D code setter 43. In this way, all wireless transmitters 16 in the system are called, and then a reply signal is sent to the multiplex transmission transmitter/receiver 45 in order to respond to the inquiry from the monitoring receiver 3. Note that this embodiment shows a configuration used when a control method is adopted in which a wireless transmitter/receiver makes a call to a wireless transmitter. If a control method is adopted, the configuration of the signal generator 44 can be omitted. Further, 46 is a received radio field strength analyzer, which is used to detect the approximate position of the wireless transmitter 6 that has transmitted the response signal in the monitoring reception 81311.
A signal corresponding to the strength of the radio wave signal received at 1!41 is sent to the multiplex transmission transmitter/receiver IIB45. [Effects of the Invention] As can be understood from the above explanation, according to the present invention, a wireless transmitter/receiver installed in a certain area such as a site in an apartment complex can constantly receive replies from a wireless transmitter. If a child attached to a wireless transmitter leaves the premises, the central monitoring receiver immediately determines which child has left the premises and issues an alert. Since it is possible to monitor children, children, etc. can be monitored unmanned. Furthermore, the system of the present invention is capable of monitoring not only humans but also livestock such as cows and horses when they are released, and has a wide range of applications. 4. I! Brief description of the first page FIG. 1 is a block diagram showing the basic concept of the system of the present invention, and FIG. 2 is a block diagram showing the basic configuration of a wireless transmitter used in the system of the present invention according to claim 2. Figure 3 is a block diagram showing the basic configuration of a wireless transmitter used in the system of the present invention as set forth in claim 3, Figure 4 is an example diagram of the wireless transmitter, and Figure 5 is its use. An explanatory diagram of an example, FIG. 6 is a configuration diagram of a wireless transmitting/receiving device and a monitoring receiver, FIG. 7 is an explanatory diagram of a signal format used during polling processing, and FIG. 8 is a basic configuration of a wireless transmitting/receiving device. This is a block diagram. [Explanation of symbols] 3・◆・Monitoring receiver 4...Wireless transmitting/receiving device 6...Wireless transmitter

Claims (5)

[Claims] (1) Multiple wireless transmitting/receiving devices connected to a central monitoring receiver via dedicated signal lines are installed in a designated area where animals, humans, etc., each equipped with a wireless transmitter, can freely move around. By determining the state of the transmitted signal from the wireless transmitter in the wireless transmitting/receiving device at the central monitoring receiver, the presence of animals, humans, etc. in the area to which the wireless transmitter is attached can be confirmed and monitored. Wireless confirmation monitoring system. (2) The wireless transmitter/receiver is configured to periodically output a radio wave signal with an ID code corresponding to the wireless transmitter, and one wireless transmitter is configured to output a radio wave signal attached with an ID code corresponding to the wireless transmitter. The wireless confirmation monitoring system according to claim 1, wherein the wireless confirmation monitoring system is configured to send a response signal back to the wireless confirmation monitoring system. (3) The wireless transmitter has an ID assigned to it.
Claim 1: The wireless transmitting/receiving device is configured to output a radio wave signal with an ID code attached thereto at a constant cycle, and one of the wireless transmitter/receivers is configured to receive a radio wave signal with an ID code attached, which is transmitted from the wireless transmitter. Wireless confirmation monitoring system as described in . (4) Signal transmission processing between the wireless transmitting/receiving device and the central monitoring receiver is performed by a multiplex transmission method using polling processing with the central monitoring receiver as a master station. The wireless confirmation monitoring system according to any one of a. (5) The monitoring receiver according to any one of claims 1 to 4, wherein the central monitoring receiver side is capable of comparing and determining the reception strength of the radio wave signal received by each wireless transmitter/receiver from the wireless transmitter. Wireless confirmation monitoring system.