JP2007119240A - Remote monitoring system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To certainly receive a signal in no relation to an earthquake other than an earthquake detection signal by enhancing utilization efficiency of a communication line in occurrence of earthquake. <P>SOLUTION: The remote monitoring system is provided with an earthquake detection control part 12 of an object to be monitored provided with earthquake sensors 15, 16 for detecting first and second signals transmitted with time difference in occurrence of earthquake, a control operation activation signal generation means 122 for transmitting a switching signal for activating a control operation mode of an elevator based on the detection of the first signal to an operation control part 11, an elevator stopping instruction signal generation means 124 for transmitting a stopping instruction signal of the elevator to the operation control part based on detection of the second signal, and an earthquake detection signal transmission means 125 for transmitting the sensor detection signal to the communication line 3 at the time when the second signal is detected; and a monitoring device 2 connected to the communication line and monitoring the sensor detection signal transmitted from the earthquake detection control part of the object to be monitored interspersed at a wide area. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a remote monitoring system for monitoring a remote property from a monitoring center.

  Conventionally, in order to grasp the effects of earthquakes on remotely monitored properties, P waves are generated at appropriate locations on the monitored properties (for example, pit bottoms in elevator hoistways, machine rooms above hoistways, hoistway walls, etc.) Seismic sensors and S-wave seismic sensors are installed. As shown in the conceptual diagram of FIG. 11, the P wave 101 is called a longitudinal wave or a dense wave, and is a small shock wave that first reaches the building 104 through the rock 103 from the epicenter 102 due to ground collapse or the like. The S wave 105 is called a transverse wave and is a large shaking wave transmitted through the rock mass 103 after the P wave arrives. The P wave differs slightly depending on the density and rigidity of the ground (a kind of stiffness), but the speed of the P wave is said to be about 6 km per second, and the S wave is said to be 3.5 km per second. That is, the P wave travels at a speed nearly twice that of the S wave.

  When the conventional elevator control device detects a P wave with a P wave earthquake sensor, it switches to a control operation mode due to an earthquake, and operates each elevator in the control operation mode. After detecting the P wave, the elevator control device stops the operation of each elevator when the S wave is detected by the S wave earthquake sensor within a predetermined time.

  Further, when the elevator control device detects the P wave and the S wave, the elevator control device transmits the P wave detection signal and the S wave detection signal to the monitoring device of the remote monitoring center through the communication line.

  In general, the monitoring center monitors a large number of monitored objects (maintenance objects) over a wide area under a maintenance contract. Therefore, when an earthquake that is a wide-area disaster occurs, P-wave earthquake sensors and S-wave earthquake sensors that are installed in a large number of monitored objects scattered over a wide area react simultaneously. And the detection signal of P wave and S wave is transmitted to a monitoring center simultaneously from the elevator control apparatus of each monitoring object through a communication line. As a result, the monitoring center becomes incapable of communication due to overcommunication load.

  When such a situation occurs, even if a signal generated in an area relatively far from the earthquake occurrence area (for example, an emergency call signal from a car or a customer call from a customer) is issued, the monitoring center side Since these communication lines are punctured, these signals cannot be received. Therefore, there is a possibility that the entire remote monitoring system may be greatly affected, and it is difficult to ensure the safety of the monitored property.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a remote monitoring system that can secure a communication line as much as possible and maintain monitoring performance even when an earthquake occurs.

In order to solve the above problems, a remote monitoring system according to the present invention includes an earthquake sensor that detects first and second signals that propagate with a time difference when an earthquake occurs;
Control operation start signal generating means for sending a switching signal for starting the control operation mode of the elevator based on the detection of the first signal to the operation control unit, and stop of the elevator based on the detection of the second signal A monitoring target comprising stop instruction signal generating means for sending an instruction signal to the operation control section, and an earthquake detection signal transmitting means for transmitting the sensor detection signal via a communication line when the second signal is detected The earthquake detection control section of the property,
And a monitoring device connected to the communication line and receiving the sensor detection signal transmitted from the monitored property.

  When the monitoring device receives a sensor detection signal from each of the monitoring target properties, the storage device stores the predetermined monitoring target property information including the property name of the monitoring target property in a table, and associates the information with the corresponding property name. The property information receiving / writing means for writing the property current information, the marking processing means for performing the marking process according to the type of the property current information, and the monitored property information on the table are displayed after the marking process is performed. And a property information display means.

  ADVANTAGE OF THE INVENTION According to this invention, the remote monitoring system which can ensure the frequency | count of utilization of a communication line at the time of an earthquake occurrence and can maintain monitoring performance can be provided.

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a block diagram showing an embodiment of a remote monitoring system according to the present invention.
In the remote monitoring system, a large number of monitored objects 1,... Scattered over a wide area and a monitoring device 2 in a monitoring center installed in a remote place are connected by a communication line 3. Here, the property 1 to be monitored means an elevator facility that performs regular or emergency maintenance management under a maintenance contract. An elevator control device 4 is installed in each monitored object 1,.

  The elevator control device 4 includes an operation control unit 11 that controls the operation of each elevator (not shown) toward a destination floor in response to a hall call and a car call, and an earthquake detection control unit 12 that detects occurrence of an earthquake. .

  The operation control unit 11 controls a power converter (not shown) according to the speed command, and drives and controls the hoisting machine 13 using AC power having a variable voltage and frequency obtained from the power converter. Although not shown in the drawings, a main rope is wound around the hoisting machine 13, and a car is suspended from one end of the main rope, and a counterweight is suspended from the other end of the main rope. In addition, the operation control unit 11 includes a message data setting unit 14 that stores message data for providing predetermined information to an elevator user when an earthquake occurs.

  On the other hand, a P-wave earthquake sensor 15 and an S-wave earthquake sensor 16 are connected to the earthquake detection control unit 12. These seismic sensors 15 and 16 are provided at appropriate locations of the property 1 to be monitored (for example, a pit bottom in the hoistway, a machine room above the hoistway, a wall portion of the hoistway or other appropriate location of the building where the elevator is installed). Installed.

  The P-wave earthquake sensor 15 detects the first P wave (longitudinal wave) that reaches the rock from the epicenter due to ground collapse or the like, and sends it to the earthquake detection controller 12. The S wave seismic sensor 16 detects an S wave (transverse wave) accompanied by a large shaking transmitted through the rock after the P wave arrives, and sends it to the earthquake detection control unit 12.

  The earthquake detection control unit 12 sends an operation change instruction signal to the operation control unit 11 based on the P wave detection signal and the S wave detection signal of each of the earthquake sensors 15 and 16, and also sends an S wave to the monitoring device 2. Only the detection signal is transmitted (described later).

  When the monitoring device 2 receives the S wave detection signal transmitted from the earthquake detection control unit 12 of each monitored object 1,..., The elevator is stopped for each monitored object 1 by S wave detection. Has a function of storing and displaying.

FIG. 2 is a functional block diagram showing the internal configuration of the earthquake detection control unit 12.
Each earthquake detection control unit 12 is provided with a CPU that executes predetermined control according to predetermined program data. Functionally, it has a P-wave level setting unit 121, a control operation start signal generation unit 122, an S-wave level setting unit 123, an elevator stop instruction signal generation unit 124, an earthquake detection signal transmission unit 125, and a property identification data setting unit 126. .

  The P wave level setting unit 121 is set with a predetermined level for detecting a P wave (for example, a predetermined signal level expected to occur between magnitude M3 and less than M5 (small earthquake)). The control operation instruction signal generation means 122 compares the signal level sent from the P-wave earthquake sensor 15 with a predetermined setting signal level set in the P-wave level setting unit 121, and the sensor signal level exceeds the setting level. When this occurs, it is determined that the P wave has been detected, and a signal for starting the control operation mode due to the earthquake is sent to the operation control unit 11. Here, the control operation mode by earthquake means that each elevator is operated to the nearest floor, for example, after reaching the nearest floor, the door is opened and the passenger is lowered, and then the door is closed for a predetermined time (for example, This is an operation mode in which a pause is made (until S wave detection).

  The S wave level setting unit 123 is set with a predetermined level for detecting the S wave (for example, a predetermined signal level between magnitude M3 and less than M5 (small earthquake)). The elevator stop instruction signal generating means 124 compares the signal level sent from the S-wave earthquake sensor 16 with the set level of the S-wave level setting unit 123, and detects the S-wave when the sensor signal level exceeds the set level. The elevator stop instruction signal is sent to the operation control unit 11 and the S wave detection signal is sent to the earthquake detection signal transmission means 125. When receiving the S wave detection signal, the earthquake detection signal transmission means 125 transmits the S wave detection signal to the monitoring device 2 through the communication line together with the property identification data set in the property identification data setting unit 126.

FIG. 3 is a diagram illustrating a configuration example of the monitoring device 2.
The monitoring device 2 includes a program memory 21 that stores program data defining a processing procedure, a monitoring control processing unit 22, an input unit 23, a buffer memory 24, a display unit 25, and a center database 26.

  When the monitoring control processing unit 22 receives the S wave detection signal with the property identification data from each earthquake detection control unit 12, the monitoring control processing unit 22 stores and displays the property current information in the monitoring target property information table shown in FIG. The input unit 23 inputs predetermined data, creates a monitoring target property information table shown in FIG. 4, and inputs a control command as necessary. The monitored property information table is a tabular format. For each monitored area (for example, Tokyo, Kanagawa, Chiba, Saitama, etc.), the target property identification data, property name (building name), property address, It classifies items into property present information, marking data, etc., and records property present information issued from each monitored property 1,.

  The buffer memory 24, in addition to the property identification data and S wave detection signal transmitted from each monitored property 1,. It has a function to temporarily store emergency call signals and other necessary data. The display unit 25 displays information excluding marking data, for example, among the property information stored in the monitored property information table illustrated in FIG.

  The monitoring control processing unit 22 is composed of a CPU, and functionally includes property information receiving / writing means 221, marking processing means 222, and property information display means 223 as shown in FIG. .

  Upon receipt of the S wave detection signal with the property identification data from each earthquake detection control unit 12, the property information receiving / writing unit 221 specifies the property name to be monitored from the property information table to be monitored stored in the center database 26, and Write elevator stop data in the property current information area corresponding to the property name. When displaying the monitoring target property information shown in FIG. 4, the marking processing unit 222 performs a process of marking according to the marking data defined in the center database 26 for each type of property current information. Here, the type of the property current information includes, for example, an elevator stop, an emergency call by closing a car, an inspection operation, a fire, and the like. The property information display means 223 teaches the display unit 25 the monitoring target property information shown in FIG. 4 excluding the marking data.

Next, the operation of the remote monitoring system configured as described above will be described with reference to FIGS.
First, the earthquake detection control unit 12 of the elevator control device 4 in each monitored object 1,... Constantly takes in the outputs of the P-wave earthquake sensor 15 and the S-wave earthquake sensor 16 and monitors the occurrence of an earthquake. That is, the earthquake detection control unit 12 takes in the P-wave signal sent from the P-wave earthquake sensor 15 (S1), compares this signal level with the set level of the P-wave level setting unit 121, and generates P due to the occurrence of the earthquake. It is determined whether or not a wave has been detected (S2). If the received signal level does not reach the set level, the process returns to step S1 and the same process is repeated.

  When the received signal level exceeds the set level, it is determined that a P wave has been detected, and a signal for starting the control operation mode by earthquake is sent to the operation control unit 11 (S3). These steps S1 to S3 correspond to the control operation start signal generating means 122 shown in FIG.

  When the operation control unit 11 receives the control operation mode activation signal from the earthquake detection control unit 12, the operation control unit 11 switches to a predetermined earthquake operation control mode and performs operation control in the control operation mode. The control operation mode by earthquake is a mode in which the car is driven to the nearest floor, the door is opened when it arrives at the nearest floor, the passenger is lowered, the door is closed, and the vehicle is paused. Therefore, the operation control unit 11 reads out the message data from the message data setting unit 14 and issues it to the car while driving each elevator toward the nearest floor. Specifically, read out the message shown in Fig. 7 (a) (for example, “There is a possibility of earthquake occurrence. Pause at the nearest floor”) and install it in the elevator car of each elevator. The voice is output from the car, or when the indicator is installed in the car, it is displayed on the indicator. By issuing a message in the car in this way, there is an effect of prompting all passengers in the car to get off at the nearest floor.

  On the other hand, after detecting the P wave, the earthquake detection control unit 12 takes in the signal sent from the S wave earthquake sensor 16 (S4), compares this signal level with the set level of the S wave level setting unit 123, and It is determined whether an S wave due to the occurrence has been detected (S5). If the received signal level does not reach the set level, the process returns to step S1 and the same process is repeated. On the other hand, if the received signal level exceeds the set level, it is determined that an S wave has been detected, and an operation stop instruction signal is sent to the operation control unit 11 (S6). These steps S4 to S6 correspond to the elevator stop instruction signal generating means 124 shown in FIG.

  When the earthquake detection control unit 12 detects the S wave, the earthquake detection control unit 12 extracts the property identification data “for example, 10001” from the property identification data setting unit 126 and adds it to the S wave detection signal (for example, an on / off signal). 2 (S7). That is, the earthquake detection control unit 12 does not transmit the P wave detection effect to the monitoring device 2 when the P wave is detected, and the S wave detection signal to the monitoring device 2 when it is determined that the S wave is detected. Send. As a result, the number of times of use of the communication line 3 is almost halved, and at the monitoring device 2 side, it can be recognized that at least the elevator is in a stopped state. This step S7 corresponds to the earthquake detection signal transmission means 125 shown in FIG.

  When the operation control unit 11 receives the elevator stop signal from the earthquake detection control unit 12, the operation control unit 11 stops the operation of each elevator and reads out the message data from the message data setting unit 14 so that it can be stored in the car and on each floor. Alert. Specifically, the messages shown in FIG. 7B (for example, “An earthquake has occurred. The elevator will be stopped.” Or “It is stopped on the floor due to the occurrence of an earthquake.”) Are read. Sound is output from the sound generator installed in the car of Unit No. or displayed on the display at each floor. Thus, there is an effect of prompting a calm action by notifying the elevator user who is waiting at each floor hall of the operation state of the elevator.

  At this time, the monitoring device 2 in the monitoring center executes the following processing. That is, the monitoring processing control unit 22 of the monitoring device 2 takes in the S-wave detection signal with the property identification data transmitted from each of the monitoring target properties 1,..., Sequentially stores it in the buffer memory 24, and executes predetermined processing. (See FIG. 8).

  The monitoring processing control unit 22 of the monitoring device 2 always performs initialization processing in accordance with the program data in the program memory 21 (S11), and then property information (S wave with property identification data) from each monitored property 1,. It is determined whether or not a detection signal is received (S12). When not receiving, it will be in a reception standby state. On the other hand, when the property information is received, based on the property identification data (for example, 10001) of the property information, the property name “xxx A building” is referred to by referring to the property identification data in the monitored property information table shown in FIG. Is identified. Then, “property current information type 01” is written in the property current information area corresponding to the property name while the elevator is stopped based on the S wave detection signal (S13). These steps S12 and S13 correspond to the property information reception writing means 221 shown in FIG.

  Subsequently, the monitoring device 2 determines whether or not to perform marking processing after writing the property current information (S14). Here, if it is determined that the marking process is to be performed, the marking process is performed on the monitoring target property information corresponding to the corresponding property name based on the marking data in the marking data area (S15). The marking process is to make it possible to recognize at a glance what state each of the monitored objects 1,. For example, it is possible to recognize whether the elevator is currently stopped or an emergency call due to the car being trapped. Conversely, if no marking is applied, the normal operating state does not correspond to the cause to be set in advance. You can grasp that there is. These steps S14 and S15 correspond to the marking processing means 222 shown in FIG.

  After performing the marking process, the monitoring device 2 sequentially reads the monitoring target property information excluding the marking data from the property information in the monitoring target property information table shown in FIG. 4 and displays it on the display unit 25 (S16). This step S16 corresponds to the property information display means 223 shown in FIG. Then, after displaying the property to be monitored, it is determined whether or not to continue the display (S17). When the display is continued, the process returns to step S12, and the same process is repeated.

  Therefore, in the above embodiment, the following effects are obtained. Although a P wave and an S wave are almost always generated when an earthquake occurs, conventionally, both the P wave detection signal and the S wave detection signal detected by each of the earthquake sensors 15 and 16 are transmitted to the monitoring device 2. However, when the detection signals are sent to the communication line 3 all at once from the respective monitored objects 1,... Scattered over a wide area, the communication line 3 connected to the monitoring device 2 is in a punctured state. On the other hand, in the remote monitoring system according to the present invention, when a P wave is detected, only the activation signal of the control operation mode due to the earthquake is sent to the operation control unit 11 and is not transmitted to the monitoring device 2. Then, since the S wave detection signal is transmitted to the monitoring device 2 when the S wave is detected thereafter, the number of times of use for the communication line 3 is almost halved, and the use of the communication line 3 corresponding to the decrease is other than the occurrence of the earthquake. It is possible to sort the property information from other monitored properties 1,. As a result, even when an earthquake occurs, it is possible to reliably receive various property information related to the monitored properties 1,. This means that very important property information other than earthquakes can be reliably monitored, and maintenance personnel are dispatched to the site quickly.

  In addition, this remote monitoring system is configured such that the monitoring device 2 displays each of the monitored objects 1,... By marking each monitored object 1,. It can be recognized at a glance whether it is in a state, and a maintenance staff can be dispatched for each monitored property 1,. That is, it becomes possible to proceed with maintenance work quickly.

(Second Embodiment)
In this embodiment, monitored objects 1,... Over a considerably wide area are monitored, or each monitored area (for example, Tokyo, Kanagawa Prefecture, etc.) has a large number of monitored objects 1,. The configuration effective for the remote monitoring system will be described with reference to FIG.

  In this remote monitoring system, a plurality of monitoring devices 2,... Are installed in a monitoring center. Since each monitoring device 2 has a large number of monitored objects 1,... For each monitored area, it is distributed and monitored separately for each monitored area. That is, one monitoring device 2 monitors the Tokyo area, and the other one monitoring device 2 monitors the Kanagawa area.

  Therefore, in the remote monitoring system according to the present invention, each monitoring device 2,... Is distributed in the internal network (LAN etc.) 31. A large display board 33 is connected to the internal network 31 via a display computer 32. The display computer 32 displays the monitoring target property information transferred from each of the monitoring devices 2,...

  Therefore, each monitoring device 2 is individually provided with a display unit 25. However, since the damage occurs in a wide area when an earthquake occurs, the entire monitoring device 2,... Can use the large display board 33. And

  FIG. 9 is a functional block diagram showing an internal configuration of each monitoring device 2 in the remote monitoring system. Each monitoring device 2 has a property information receiving / writing unit 221, a marking processing unit 222, and a property information display unit 223, as well as a specific property extraction / display unit 224 and a specific property all-case transfer unit 225, as in FIG. I have. Note that the property information receiving / writing unit 221, the marking processing unit 222, and the property information display unit 223 will be described with reference to FIG.

  The specific property extraction / display unit 224 extracts the monitoring target property information related to the specific property current information type (for example, “01” when the elevator is stopped) from the property information in the monitoring target property information table shown in FIG. The specific property all-cases transfer means 225 transfers all the monitored property information extracted to the internal network 31 and displays the information on the large display board 33 via the display computer 32.

  Next, the operation of the monitoring device 2 in the remote monitoring system as described above will be described with reference to FIG. Note that steps S11 to S16 have already been described with reference to FIG.

  After displaying the monitoring target property information on the display unit 25, the monitoring processing control unit 22 of the monitoring device 2 determines whether or not to display the property current information of the type in which the elevator is stopped among the property current information (S21). ). For example, when there is an earthquake, there is a request to display only the property to be monitored that is affected by the earthquake, and there are cases where it is desired to display an emergency call for confinement in the car if the earthquake is not occurring.

  Therefore, the monitor inputs data “01” indicating the elevator stop and the property extraction instruction from the input unit 23. Upon receiving the property extraction instruction having data “01”, the monitoring processing control unit 22 determines to display the property current information of the type in which the elevator is stopped. Then, only the property information when the elevator is stopped is extracted (S22) and displayed on the display unit 25 (S23). As described above, the extraction of the specific property current information type is not limited to when the elevator is stopped. These steps S21 to S23 correspond to the specific property extraction and display means 224 shown in FIG.

  Subsequently, the monitoring process control unit 22 determines whether or not to transfer to the display computer 32 (S24). Here, if there is a preset flag or a transfer instruction input from the input unit 23, it is determined that the extracted property information is to be transferred, and all the monitored property information shown in FIG. 4 relating to when the elevator is stopped is transferred to the display computer 32. (S25, S26). These steps S24 to S26 correspond to the specific property all-cases transfer means 225 shown in FIG.

  When the display computer 32 receives specific monitoring target property information from each of the monitoring devices 2,..., The display computer 32 arranges the information for each property information type and each monitoring target region and displays the information on the large display board 33. At this time, it can be displayed cyclically alternately for each property information type.

  According to this embodiment, since only the monitored property information of the property type required by the supervisor is extracted and displayed on the display unit 25, it is possible to immediately grasp how much the elevator is stopped for each region, for example. . In addition, it is possible to easily grasp in which area the elevator stops due to the occurrence of an earthquake, and it is possible to take thorough measures including the number of people when dispatching maintenance personnel.

  Also, by extracting only the monitored property information of the property type required by the observer and displaying it on the large display board 33, the observer who monitors a specific area can easily affect the elevator due to earthquakes in other areas. Can grasp.

(Other embodiments)
(1) In the above embodiment, the seismic sensors 15 and 16 for P-wave and S-wave are divided. However, one seismic sensor may be shared. In addition, although the P wave level setting unit 121 and the S wave level setting unit 123 are provided separately, the P wave level and the S wave level may be set in one level setting unit.

(2) The property information in the monitored property information table shown in FIG. 4 is an example of an information array for displaying on the display unit 25 in a table format. For example, when it is desired to display a monitored property on the map display screen of the monitored region, it can be realized by newly adding latitude / longitude information for each property name.

(3) In the above-described embodiment, the remote monitoring of the elevator has been described as an example. However, the present invention can be applied to other elevator equipment such as an escalator and other properties and equipment that can be remotely monitored.

  In addition, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention.

The figure which shows the whole structure of the remote monitoring system which concerns on this invention. The block diagram which represented the earthquake detection control part shown in FIG. 1 functionally. The block diagram which shows an example of the monitoring apparatus shown in FIG. The figure which shows the data array example of the monitoring object property information table memorize | stored in the center database shown in FIG. The block diagram which represented the monitoring process control part shown in FIG. 3 functionally. The flowchart explaining the operation | movement procedure of an earthquake detection control part. The figure which shows an example of the message which reports to a passenger car and each floor hall from the operation control part at the time of the occurrence of an earthquake. The flowchart explaining the operation | movement procedure of a monitoring apparatus. The block diagram which functionally represented the monitoring process control part of the monitoring apparatus for demonstrating other embodiment of the remote monitoring system which concerns on this invention. The flowchart explaining operation | movement of other embodiment. The conceptual diagram explaining the propagation example of P wave and S wave at the time of the occurrence of an earthquake.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Monitoring object, 2 ... Monitoring apparatus, 3 ... Communication line, 4 ... Elevator control apparatus, 11 ... Operation control part, 12 ... Earthquake detection control part, 13 ... Hoisting machine, 15 ... P wave earthquake sensor, 16 ... S wave seismic sensor, 22 ... monitoring processing control unit, 25 ... display unit, 26 ... center database, 31 ... internal network, 32 ... display computer, 33 ... large display board, 122 ... control operation start signal generating means, 124 ... Elevator stop instruction signal generation means, 125 ... earthquake detection signal transmission means, 221 ... property information reception / writing means, 222 ... marking processing means, 223 ... property display means, 224 ... specific property extraction display means, 225 ... transfer of all specific properties means.

Claims (3)

An earthquake sensor for detecting the first and second signals propagating with a time difference when an earthquake occurs;
Control operation start signal generating means for sending a switching signal for starting the control operation mode of the elevator based on the detection of the first signal to the operation control unit, and stop of the elevator based on the detection of the second signal A monitoring target comprising stop instruction signal generating means for sending an instruction signal to the operation control section, and an earthquake detection signal transmitting means for transmitting the sensor detection signal via a communication line when the second signal is detected The earthquake detection control section of the property,
A remote monitoring system comprising a monitoring device connected to the communication line and receiving the sensor detection signal transmitted from the monitored property. When the monitoring device receives a sensor detection signal from each of the monitoring target properties, the storage device stores the predetermined monitoring target property information including the property name of the monitoring target property in a table, and associates the information with the corresponding property name. The property information receiving / writing means for writing the property current information, the marking processing means for performing the marking process according to the type of the property current information, and the monitored property information on the table are displayed after the marking process is performed. The remote monitoring system according to claim 1, further comprising property information display means.   The monitoring apparatus further includes specific property extraction display means for extracting and displaying only specific monitoring target property information based on the type of the property current information after displaying the monitoring target property information by the property information display means. The remote monitoring system according to claim 2.

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