JPH10122916A - Abnormality monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To visually confirm the occurrence of an abnormality and the concrete state in the position of occurrence by moving a monitoring means on the basis of the position information detected by a detecting means, and making it transfer a pickup image. SOLUTION: Temperature sensors 20a-20c which are detecting means are arranged close to prescribed positions of a target to be monitored 30, and generate signals of different specified frequencies at a prescribed temperature or more. A moving element control circuit integrated into a moving element 50 having an infrared camera 40 loaded thereon receives abnormality detection signals outputted by the sensors 20a-20c, analyzes the frequencies to specify the sensor positions by the difference thereof, and outputs predetermined position information to a driving circuit according to the frequencies to move the moving element 50. The moving element 50 is moved on a rail 6 three-dimensionally arranged on the periphery of the target to be monitored 30 to reach the abnormality detected position, and variously changes the camera angle of the infrared camera 40 to photograph the position of abnormality occurrence. The photographed image data is transferred to a monitoring device by a radio data transmitting device and displayed on a screen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an abnormality monitoring system for monitoring the presence or absence of an abnormality such as overheating.

[0002]

2. Description of the Related Art Conventionally, as an abnormality monitoring system for monitoring an abnormality occurrence position such as overheating, a system disclosed in JP-A-6-66648 is known. The abnormality monitoring system includes a heat detection odorant disposed near a monitoring target object, where the odor component is thermally melted, and an odor sensor that detects the odor component. When the object to be monitored overheats, the odorant emits an odor, and the odor sensor detects the odor and monitors for overheating.

There is also known an abnormality monitoring system in which an object to be monitored is photographed by a surveillance camera and its image is monitored at a remote place.

[0004]

Among the above-mentioned conventional abnormality monitoring systems, the former one can detect an abnormality occurrence position in a remote place, but cannot know the specific situation of the abnormality occurrence part. Did not. On the other hand, the latter
The occurrence of an abnormality could not be detected, and humans had no choice but to check for abnormalities within the installed shooting range.

The present invention has been made in view of the above problems, and has as its object to provide an abnormality monitoring system capable of visually confirming the occurrence of an abnormality from a remote place or the like and a specific situation at the position where the abnormality has occurred. .

[0006]

In order to achieve the above object, the invention according to claim 1 detects a presence or absence of an abnormality and outputs a plurality of information according to the detected position when the abnormality is detected. Detecting means, monitoring means capable of photographing a plurality of monitoring positions corresponding to the detection positions detected by the detection means and transmitting the monitoring positions to a remote location, and detecting the detection positions according to information corresponding to the detection positions from the detection means. It is configured to include a monitoring control unit that causes the monitoring unit to perform photographing.

According to the present invention having such a configuration, when the detection means detects the occurrence of an abnormality, it outputs information corresponding to the position where the abnormality has occurred. On the other hand, the monitoring means is capable of photographing a plurality of monitoring positions corresponding to the detection positions of the detection means and transmitting the monitoring positions to a remote location, and the monitoring control means is configured to provide the detection means with information corresponding to the detection positions. Then, the monitoring means is caused to take an image of the detected position based on the detected position. Abnormality here means
Any condition may be acceptable as long as it shows a state different from the normal state, such as overheating of an electric facility and non-conduction of a conduction part, and includes various forms of abnormality.

For detecting the occurrence of the abnormality, a temperature sensor or the like may be used to detect a temperature change such as overheating, and an optical sensor or an ultra A sound wave sensor or the like may be used, and both the detection target and the detection method can be appropriately changed. Further, the output of the information according to the abnormality occurrence position may be such that each of the detecting means may output its own information including the position information, and in particular, each of the same may include the same information not including the position information as described above. The monitoring control means connected to output the information may be configured to recognize the output position of each piece of information and to grasp the abnormality occurrence position.

The monitoring means may be configured to be able to photograph a plurality of abnormality occurrence positions and to transmit the photographed image to a remote place. As an example of the monitoring means, the invention according to claim 2 is the abnormality monitoring system according to claim 1, wherein the monitoring means is configured to be movable, and moves to accurately capture the detected position. The configuration is characterized by the following. According to the present invention having such a configuration, the monitoring control means attempts to cause the monitoring means to photograph the detection position. Then, the monitoring means moves the abnormal occurrence position to a position where the photographing can be accurately performed and starts photographing.

The term "photographing" as used herein means that the photographing is performed so that the detected position can be easily determined and the situation of the detected position can be grasped in detail. In other words, it indicates that the monitoring means capable of performing the most appropriate imaging is selected, the detection position is physically approached, or the imaging position is photographed by zooming up without changing the imaging position. Therefore, at least it does not mean that the whole image of the monitoring target is photographed, or that the photographing is not performed over a wide range so that the detection position cannot be easily determined.

The method of moving the monitoring means only needs to be configured so as to be able to move to the position where the abnormality occurrence position can be photographed. For example, a guide route such as a rail is formed around a structure or the like to be monitored, and monitoring means is arranged on the guide route. At this time, when control is performed by the monitoring control means to monitor a certain position,
The monitoring means moves on the rail to a position where the abnormality detection position can be photographed. Then, when the above-mentioned abnormality detection position arrives at a position where photographing is possible, photographing of the abnormality occurrence position starts.

Here, in addition to the above-described method, the moving means may be provided with a control means at a fixed location and provided with a swing function so that the monitoring angle can be changed. , The operation of the arm may be controlled by the monitoring control means, so that the abnormality detection position may be photographed in more detail. As described above, even if the monitoring means is not necessarily configured to be movable, if a plurality of monitoring devices are arranged, it is possible to monitor a plurality of positions simply by switching images between these monitoring devices. Becomes

[0013] As an example in which a plurality of the monitoring means are arranged, the invention according to claim 3 is the abnormality monitoring system according to claim 1 or 2, wherein the monitoring means is provided for each monitoring position. It has a configuration characterized by having a plurality of corresponding monitoring means. According to the present invention having such a configuration, when the monitoring control unit obtains information on the abnormality detection position from the detection unit, the monitoring control unit causes the monitoring unit corresponding to the detection position to take an image.

For example, the monitoring means is fixed around the structure to be monitored at intervals, and each monitoring means is connected to the monitoring control means, and the monitoring means for photographing by the monitoring control means is provided. It is assumed that it is configured to be selectable. At this time, when information corresponding to the abnormality detection position is obtained from the detection unit, the monitoring unit that can most accurately photograph the abnormality detection position is selected and photographing is started. At this time, a plurality of monitoring means may be selected and shooting may be performed from all angles without necessarily selecting the monitoring means capable of capturing the most accurate image. At the same time, the monitoring means to be shot is switched between these monitoring means. May be.

In the above case, although the monitoring means is fixed, it is not always necessary to be fixed, and the present invention can be applied to a case where the monitoring means is configured to be movable as described above.
At this time, if a plurality of monitoring means are provided, monitoring means corresponding to each monitoring position, that is, if a monitoring range is determined for each, when an abnormality occurs in the monitoring range of each monitoring means, You can move and shoot more quickly. Further, even if the monitoring means are not individually connected to the monitoring control means, the monitoring control means identifies each monitoring means even if the monitoring means are collectively connected to the monitoring control means. What is necessary is just to be able to control each.

The monitoring control means only has to be capable of causing the monitoring means to immediately take an image of the detected position in accordance with the position information based on the detection output of the detection means, and the form can be appropriately changed. For example, when the monitoring means is fixed, the operation and the stop may be selectively switched among the plurality of monitoring means. That is,
When the information corresponding to the detection position is input from the detection means, only the monitoring means capable of accurately photographing the detection position may be operated, and the other monitoring means may simply be stopped.

Further, when the monitoring means is configured to be movable, when information corresponding to the detected position is input from the detecting means, the position information and the information included in the information are included as described above. The three-dimensionally recognizing the detection position from the output position, and inputting the movement direction, the movement distance, the change of the monitoring angle, etc. of the monitoring means in each axis direction, and the monitoring means can photograph the detection position. Should be fine. Here, it is assumed that the monitoring means is configured such that both the monitoring position and the monitoring angle can be changed.However, such a configuration is not necessarily required, and when only the monitoring position is movable, , Only the movement distance may be controlled,
When only the monitoring angle is movable, control of only the monitoring angle may be performed, and the control can be appropriately changed by the configuration of the monitoring unit.

Further, even if the control is not necessarily performed by the monitoring control means as described above, the control may be performed according to another means, that is, according to a program separately set in advance. Alternatively, a configuration that can be controlled by manual operation may be used. In particular, a combination of these may be configured to enable control by a program or manual operation in normal times, and to enable control by the monitoring control means when an abnormality occurs. Of course, the monitoring means may be stopped in normal times.

For example, it is set so as to circulate around the structure to be monitored at a constant speed and monitor the structure. And
When the detection means detects an abnormality and information corresponding to the detected position is obtained, it may be set so as to be controlled by the monitoring control means according to the information. At this time, even if the setting is not necessarily performed on the premise that the monitoring means is moved as described above, when the monitoring means is fixed as described above, the selection of the monitoring means for taking an image is set. Is also good.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an overheated portion monitoring apparatus to which an abnormality monitoring system according to one embodiment of the present invention is applied. In FIG. 1, the overheated portion monitoring device 10 has three temperature sensors 20a to 20a as detection means.
0c. These temperature sensors 20a to 20c
Are respectively arranged in close proximity to predetermined portions of the monitoring target 30, and when the temperature exceeds a predetermined temperature, each of them transmits an abnormality detection signal of a different specific frequency. That is, the three temperature sensors 20a to 20c are identified based on the difference in frequency, and it is determined which temperature sensor has detected when an abnormality has occurred.

Here, the abnormality detection signal only needs to be able to identify the three temperature sensors 20a to 20c from the frequency thereof, and the analog and digital signal types are not particularly limited. Further, considering that it is sufficient to detect which of the at least three temperature sensors 20a to 20c has an abnormality, for example, the temperature sensors 20a to 20c need not be identified by the difference in frequency.
Each of 0c may be identified by transmitting a digital signal of a different specific bit pattern.

Further, the overheated portion monitoring apparatus 10 includes an infrared camera 40, a moving member 50, and a rail 60 as the monitoring means. In FIG. 2, an end of a substantially semicircular support piece 41 is joined to the bottom of the infrared camera 40. A vertical motor 42 having a rotation axis perpendicular to the direction 41 is rotatably supported by the same rotation axis. Further, the bottom of the vertical motor 42 is rotatably supported on the same rotation axis of a horizontal motor 51 having a rotation axis in the vertical direction fixed in the moving element 50 via a motor support column 43.

With this configuration, the driving angle of the infrared camera 40 can be changed in the vertical direction by driving the vertical motor 42, and the shooting angle of the infrared camera 40 can be changed by driving the horizontal motor 51. It can be changed in the horizontal direction, and the shooting angle of the infrared camera 40 can be variously changed by controlling the operations of both.

On the other hand, the moving element 50 is a rail 6 disposed so as to surround the periphery of the monitoring target 30 in a substantially cubic shape.
It is configured to be slidable by using a drive source such as a motor (not shown) on the upper side, and transports the infrared camera to a predetermined shooting position. In FIG. 1, for convenience, the rails 60 are arranged in a substantially cubic shape on the moving route of the moving element 50, but it is needless to say that the rails 60 can be changed as appropriate according to the shape of the monitoring target 30 and the detection position. Absent.

The moving element 50 receives image data of the infrared camera 40 via the cable 44 and transfers the data to a monitoring device 80 described later by a wireless data transfer device (not shown). In the present embodiment, the configuration is such that one infrared camera 40 can be moved to photograph a plurality of monitoring positions, but it is not necessarily limited to such a configuration. For example, as shown in FIG.
three infrared cameras 4 corresponding to each of a to 20c
It is possible to appropriately change the monitoring position as long as a plurality of monitoring positions can be reliably photographed, for example, by fixedly installing 0a to 40c and photographing one monitoring position with one infrared camera.

The above-described moving element 50 incorporates a moving element control circuit 70 whose block diagram is shown in FIG. 4, and this moving element control circuit 70 constitutes a monitoring control means. In the figure, a receiving unit 71 receives an abnormality detection signal output from the temperature sensors 20a to 20c, amplifies the signal to a predetermined level, and outputs the amplified signal to a position determination circuit 72. The frequency of the signal is analyzed by the position determination circuit 72, and predetermined position information is output to the drive circuit 73 according to the frequency. Thereafter, the drive circuit 73 analyzes the position information, and outputs the vertical motor 42, the horizontal motor 51, and the moving element 50.
Control the operation of.

The position information here refers to the vertical motor 4
2 and a signal indicating the drive angle of the horizontal motor 51 and the position of the moving element 50 may be assumed. For example, the vertical motor 4
2. The driving angle of the horizontal motor 51 may be considered a relative displacement angle from a predetermined reference position, and the position of the moving element 50 may be considered in the same manner, and a predetermined reference position is provided. It can be considered as a moving procedure from to the shooting position.

With the above configuration, it is possible to visually recognize the occurrence of an abnormality and the specific situation at the same occurrence position from a remote place or the like. Of course, in the sense of detecting an abnormality, it is possible to apply the detection means using the odor sensor shown in the related art, and it is within the range of the related art in the sense that the monitoring target is photographed and transferred to a remote place or the like, Simply combining the two could not detect the specific situation of the location where the abnormality occurred.

In this embodiment, a monitoring device 80 having a monitoring device control circuit 90 whose block diagram is shown in FIG. 5 is provided, a monitoring means for displaying image data, and a warning for notifying that an abnormality has been detected. Means,
Manual control means for manually controlling the shooting position of the infrared camera 40.

The monitoring means includes a display 8
1 and an image expansion circuit (not shown).
To be displayed. In the present embodiment, a model diagram of a monitoring target in which the positions of the temperature sensors 20a to 20c in which the abnormality has occurred can be output at a glance to the display 81 by a model diagram drawing unit (not shown). Each time the arranged switch button 82 is pressed once, the image from the infrared camera 40 and the same model diagram are switched and output from the display 81.

The warning means includes temperature sensors 20a-20
c, three display lamps 83a to 83 corresponding to
c, an alarm device 84, a receiving section 91 for controlling these operations, and a frequency discriminating circuit 92. That is, when the receiving unit 91 receives the abnormality detection signal generated by the temperature sensors 20a to 20c, the signal is amplified to a predetermined level and then output to the frequency determination circuit 92. The frequency determination circuit 92 analyzes the frequency of the signal to detect which of the temperature sensors 20a to 20c has an abnormality, and turns on the corresponding display lamps 83a to 83c.
The alarm device 84 is operated. Alarm device 84 here
Means an audio playback device that generates a warning sound during operation, and calls on the operator to pay attention by using two different means of turning on the display lamps 83a to 83c and a warning sound generated by the alarm device 84. It is.

Further, the manual control means includes three manual buttons 85a to 85c and a frequency selection circuit 93.
, A transmission unit 94, an angle control button 86, a reception unit 71 in the mover control circuit 70, and a frequency selection circuit 74.
And a motor drive circuit 75.

[0033] Three manual buttons 85a-85c
Correspond to the temperature sensors 20a to 20c, respectively. When a predetermined manual button is pressed, the frequency selection circuit 93 detects this and transmits a manual photographing signal of a specific frequency via the transmission unit 94. Here, the manual photographing signal is set so that the frequency of the signal transmitted from each of the manual buttons 85a to 85c is different so that it is possible to identify which of the manual buttons 85a to 85c has been pressed. The frequency domain is shifted so as not to be mistaken for a detection signal.

When the receiving section 71 detects the manual photographing signal, the signal is amplified to a predetermined level and then output to a frequency discriminating circuit 74.
Moves the moving element 50 to the photographing position of the corresponding temperature sensor 20a to 20c, and waits for an input from the angle button 86. The angle button 86 is composed of four cursor buttons in the vertical and horizontal directions, and when the cursor button is pressed, the frequency selection circuit 74 detects this, and
An angle control signal of a different specific frequency is transmitted via the transmission unit 94 according to the pressed angle button 86. Needless to say, these signals are also shifted in frequency range so as not to be erroneously recognized as the abnormality detection signal or the manual photographing signal.

When the receiving section 71 receives the angle control signal, it amplifies the signal to a predetermined level, and then inputs the signal to a frequency determination circuit 74 in an input waiting state. The frequency determination circuit analyzes the frequency of the input signal. , Motor drive circuit 7
5 drives the vertical motor 42 and the horizontal motor 51 based on the analysis result. More specifically, for example, while the up cursor button is being pressed, the horizontal motor 51 may be driven to displace the shooting angle of the infrared camera 40 in the upward direction. Various known techniques can be applied, such as displacing the photographing angle upward by angle.

Of course, when the manual buttons 85a to 85c are pressed, the temperature sensors 20a to 20c detect abnormalities,
It is also conceivable that the infrared camera 40 is taking a picture of a place where an abnormality has occurred. In this case, an interrupt is generated when the receiving section 71 receives the manual photographing signal, and the photographing by the infrared camera is immediately stopped. Thereafter, control may be performed so as to be in a state of waiting for the angle control signal, or when the infrared camera 40 is capturing an image of a location where an abnormality has occurred, the infrared camera 40 is locked so as not to receive the manual capture signal at all. You may.

Next, the operation of this embodiment will be described. When the temperature sensors 20a to 20c detect an overheated portion, the temperature sensors 20a to 20c transmit an abnormality detection signal of a specific frequency in accordance with the detected portion, and
1 detects this, amplifies it to a predetermined level, and outputs it to the position determination circuit 72. The position determination circuit 72 analyzes the frequency of the abnormality detection signal, generates the above-described position information, and outputs the generated position information to the drive circuit 73.
The moving element 50 is moved to the photographing position on the basis of the position information, and the vertical motor 42 and the horizontal motor 51 are driven to cause the infrared camera 40 to photograph the above-mentioned detected portion.
The infrared camera 40 is connected to the mobile unit 50 by a cable 44, and image data captured via the cable 44 is input to the mobile unit 50 and transferred to the monitoring device 80 by a wireless data transfer device (not shown). You.

When the monitoring device 80 receives the image data, the monitoring device 80 uses an image expansion device (not shown) to display the display 8.
The captured image is expanded to 1. A switching button 82 is provided on the left side of the display 81. Each time the switching button 82 is pressed once, the temperature sensor 2 in which an abnormality has occurred is displayed.
The model image of the monitoring target at which the positions of 0a to 20c can be seen at a glance and the image captured by the infrared camera 40 are switched.

On the other hand, at the same time that the receiving section 71 receives the abnormality detection signal, the receiving section 91 also receives the abnormality detection signal, amplifies the signal to a predetermined level, and outputs the amplified signal to the frequency discriminating circuit 92. The frequency discriminating circuit 92 discriminates the frequency of the abnormality detection signal, turns on the corresponding display lamp, and generates a warning sound in the alarm device to call the operator's attention.

In this embodiment, the monitoring device 8
By pressing the manual buttons 85a to 85c arranged at 0, it is possible to manually change the shooting location of the infrared camera 40. Specifically, when the manual buttons 85a to 85c are pressed, the frequency selection circuit 93 transmits a manual photographing signal of a specific frequency via the transmission unit 94. When the receiving section 71 receives the manual signal, it amplifies the signal to a predetermined level, and outputs the signal to a frequency discriminating circuit 74.
The moving element 50 is moved to the photographing position of ２０20c, and an input of an angle control signal is awaited.

Here, when a predetermined cursor button of the angle button 86 composed of four cursor buttons is pressed, the frequency selection circuit 93 sends out an angle control signal of a specific frequency via the transmission section 94 in accordance with the pressed cursor button. .
Upon receiving the angle control signal, the receiving unit 71 amplifies the signal to a predetermined level and outputs the amplified signal to the frequency discriminating circuit 74 which is waiting for the input of the angle control signal. This frequency discriminating circuit 74
Analyzes the frequency of the angle control signal, and the motor drive circuit 75 drives the vertical motor 42 and the horizontal motor 51 based on the analysis result, and sequentially changes the photographing angle of the infrared camera 40.

As described above, when the temperature sensors 20a to 20c detect an abnormality, an abnormality detection signal having a different specific frequency is transmitted, and the object to be photographed by the infrared camera 40 is detected based on the abnormality detection signal. By shifting to, it is possible to detect the occurrence of an abnormality even from a remote place or the like, and to visually recognize the detailed situation of the abnormality detection location.

[0043]

As described above, the present invention can provide an abnormality monitoring system capable of visually confirming the occurrence of an abnormality from a remote place or the like and the specific situation at the position where the abnormality has occurred.

Further, according to the second aspect of the present invention, the number of monitors such as cameras for photographing the location where an abnormality has occurred can be reduced, so that the size of the apparatus can be reduced. Further, according to the third aspect of the present invention, since there is no need to perform processing such as moving the monitor, control is facilitated.

[Brief description of the drawings]

FIG. 1 is a perspective view of an overheated portion monitoring device to which an abnormality monitoring system according to an embodiment of the present invention is applied.

FIG. 2 is a side view of an infrared camera and a moving element.

FIG. 3 is a perspective view of an overheated portion monitoring device according to a modification.

FIG. 4 is a block diagram of a mover control circuit.

FIG. 5 is a block diagram of a monitoring device control circuit.

FIG. 6 is a schematic front view of the monitoring device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Overheated part monitoring apparatus 20a-20c Temperature sensor 30 Monitoring target 40 Infrared camera 41 Support piece 42 Vertical motor 43 Motor support column 44 Cable 50 Movement 51 Horizontal motor 60 Rail 70 Movement control circuit 71 Receiver 72 Position discriminating circuit 73 Drive Circuit 74 Frequency discriminating circuit 75 Motor drive circuit 80 Monitoring device 81 Display 82 Switching buttons 83a to 83c Indicator lamp 84 Alarm device 85a to 85c Manual button 86 Angle button 90 Monitoring device control circuit 91 Receiver 92 Frequency discriminating circuit 93 Frequency discriminating circuit 94 Transmitter

Claims (3)

[Claims] A plurality of detecting means for detecting the presence or absence of an abnormality and outputting information according to the detected position when the abnormality is detected, and a plurality of monitoring positions corresponding to the detected positions by the detecting means. Monitoring means capable of photographing and transmitting to a remote location; and monitoring control means for causing the monitoring means to photograph the detected position based on information corresponding to the detected position from the detecting means. Abnormality monitoring system. 2. The abnormality monitoring system according to claim 1, wherein the monitoring means is configured to be movable, and moves to photograph the detected position. 3. The abnormality monitoring system according to claim 1, wherein the monitoring means includes a plurality of monitors corresponding to the monitoring positions.