JP2008217512A - Temperature abnormality diagnostic system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a temperature abnormality diagnostic system capable of quickly and appropriately determining whether or not there is temperature abnormality at a site where an object to be diagnosed is installed or the like. <P>SOLUTION: The system is provided with: a radio IC tag 2 which can be disposed at an object Fm to be diagnosed and stores an allowable temperature of the object Fm to be diagnosed; and a portable diagnostic device 3. The diagnostic device 3 is provided with: a temperature measurement part 31 for remotely measuring a temperature at an arbitrary position of the object Fm to be diagnosed; a reader/writer for reading the allowable temperature from the radio IC tag 2; and a diagnosis part 37 for diagnosing presence/absence of temperature abnormality on the basis of the measured temperature by the temperature measurement part 31 and the allowable temperature read by the reader/writer 32. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a temperature abnormality diagnosis system that measures the temperature of a power cable, a circuit breaker, etc. and diagnoses the presence or absence of a temperature abnormality.

  For example, if equipment such as a power cable or a circuit breaker is overheated (abnormal temperature rise), the equipment may be damaged, and other equipment may be affected by heat. For this reason, it is necessary to measure the temperature of various facilities regularly or as needed, and to monitor and diagnose abnormal overheating of the facilities. And a thermo tape may be used from the advantage that a temperature change can be grasped | ascertained easily with a simple structure. This thermotape changes color according to the temperature change, and is attached to the diagnosis object (measurement object) that is the object of diagnosis (measurement), so that the temperature change of the diagnosis object is grasped as the tape color change. It can be confirmed. However, in such a thermo tape, since only the temperature of the location where the thermo tape is affixed is measured in a point manner, the temperature of the entire diagnostic object cannot be properly grasped. In addition, it is difficult to accurately determine the color change in dark places, and when the object to be diagnosed is a power facility or the like, it must be observed from a distance greater than the accessible safe distance. May be difficult.

For this reason, an infrared thermometer (radiation thermometer) that can remotely measure the temperature at an arbitrary position (part) without directly touching the diagnostic object is known (see, for example, Patent Document 1). . This infrared thermometer detects the amount of infrared energy radiated from the diagnostic object and measures the temperature from the amount of energy.
Japanese Patent Laid-Open No. 10-281879

  By the way, when the temperature of the diagnostic object is measured, it is necessary to determine whether or not the measured temperature is abnormal. Conventionally, however, the determination requires time and labor. That is, after measuring the temperature of the diagnostic object with the infrared thermometer as described above, the allowable temperature of the diagnostic object must be examined to determine whether or not the measured temperature is within the allowable temperature. In addition, there are many cases where the place where the document storing the allowable temperature of the diagnostic object is stored is far away from the installation place of the diagnostic object, and time and labor are required for the judgment. As a result, the temperature was measured at the place where the diagnostic object was installed, and the presence or absence of temperature abnormality could not be determined promptly and appropriately.

  Accordingly, an object of the present invention is to provide a temperature abnormality diagnosis system that can quickly and appropriately determine the presence or absence of a temperature abnormality at a site where a diagnostic object is installed.

In order to achieve the above object, the invention according to claim 1 is a temperature abnormality diagnosis system for measuring the temperature of a diagnostic object and diagnosing the presence or absence of a temperature abnormality, and can be disposed on the diagnostic object, Information including an allowable temperature of the diagnostic object is stored, and the information storage medium capable of reading the information from the outside and a portable diagnostic apparatus are provided, and the diagnostic apparatus has an arbitrary position of the diagnostic object. Based on a temperature measuring means for remotely measuring the temperature of the information, an information reading means for reading the information from the information storage medium, a temperature measured by the temperature measuring means, and an allowable temperature of the information read by the information reading means And diagnostic means for diagnosing the presence or absence of temperature abnormality.
(Function)
An information storage medium storing information such as the allowable temperature of the diagnostic object is disposed on the diagnostic object, and the following is performed during the diagnosis. That is, when an allowable temperature is read from the information storage medium of the diagnostic object by the information reading means of the diagnostic apparatus and the temperature of the diagnostic object is measured by the temperature measuring means, a temperature abnormality is detected by the diagnostic means based on the allowable temperature and the measured temperature. Presence or absence is diagnosed.

According to a second aspect of the present invention, in the temperature abnormality diagnosis system according to the first aspect, the diagnostic device is provided with a warning unit that issues a warning when the diagnostic unit diagnoses that there is a temperature abnormality. Features.
(Function)
When the temperature of the object to be diagnosed is measured by the temperature measuring means, and the diagnosis means diagnoses that there is a temperature abnormality, an alarm is issued by the alarm means.

According to a third aspect of the present invention, in the temperature abnormality diagnosis system according to any one of the first or second aspects, the information storage medium can write information from outside, and the diagnostic device stores the information storage An information writing means for writing information to a medium is provided, and the measured temperature can be written to the information storage medium by the information writing means.
(Function)
The measured temperature of the diagnostic object measured by the temperature measuring means is written to the information storage medium by the information writing means.

According to a fourth aspect of the present invention, in the temperature abnormality diagnostic system according to the third aspect, the diagnostic device includes a clock for measuring date and time, and writes the measurement date and time of the measured temperature together with the measured temperature to the information storage medium. It is possible.
(Function)
The measured temperature of the diagnostic object measured by the temperature measuring means and the measurement date and time are written to the information storage medium by the information writing means.

  According to the first aspect of the invention, the allowable temperature is read from the information storage medium arranged in the diagnostic object by the information reading means of the diagnostic apparatus, and the temperature of the diagnostic object is measured by the temperature measuring means of the diagnostic apparatus. By doing so, the presence or absence of temperature abnormality is diagnosed. That is, it is possible to quickly determine the presence or absence of a temperature abnormality on the spot by carrying the diagnostic device at the site where the diagnostic object is installed and reading the information and measuring the temperature. In addition, since the presence / absence of temperature abnormality is diagnosed based on the allowable temperature and the measured temperature of the diagnostic object, it is possible to make an appropriate determination according to the temperature characteristics of the diagnostic object.

  According to the second aspect of the present invention, when it is diagnosed that there is a temperature abnormality, an alarm is issued by the alarm means, so that the measurer or the like can reliably recognize the temperature abnormality on the spot.

  According to the invention described in claim 3, the measured temperature measured by the diagnostic device can be written in the information storage medium of the diagnostic object. For this reason, the measured temperature can be arbitrarily read from the information storage medium at the site where the diagnostic object is installed, and the past temperature state can be easily and quickly confirmed.

  According to the invention described in claim 4, the measured temperature of the diagnostic object and the measurement date and time can be written in the information storage medium of the diagnostic object. For this reason, the measured temperature and the measurement date and time can be arbitrarily read from the information storage medium, and the past temperature history can be easily and quickly confirmed.

  The present invention will be described below based on the illustrated embodiments.

  FIG. 1 is a schematic configuration diagram of a temperature abnormality diagnosis system 1 according to an embodiment of the present invention. The temperature abnormality diagnosis system 1 is a system for measuring the temperature of the diagnostic object Fm and diagnosing the presence or absence of the temperature abnormality, and includes a radio frequency identification (IC) tag (information storage medium) 2, a diagnosis device 3, and the like. It is composed of

  The wireless IC tag 2 includes an IC (Integrated Circuit) chip and an antenna, and can read and write information from the outside. In other words, it is possible to receive radio waves as information from the outside with an antenna, write the information to the IC chip, transmit the radio waves from the antenna to the outside, and read the information in the IC chip. Here, information as shown in FIG. 2 is stored in the IC chip. That is, an ID (IDentification) 21 of the wireless IC tag 2, an allowable temperature 22, and each measurement data 23 are stored.

  ID 21 stores identification information of the wireless IC tag 2, and allowable temperature 22 stores the allowable temperature of the diagnostic object Fm on which the wireless IC tag 2 is disposed. Here, the allowable temperature is a temperature condition necessary for maintaining the performance and function of the diagnostic object Fm, and includes both the upper limit temperature and the lower limit temperature. For example, when the diagnostic object Fm is a power cable, the allowable temperature is “upper limit temperature 60 ° C.” or the like. The ID 21 and the allowable temperature 22 are stored in the IC chip in advance, that is, before diagnosis. Each measurement data 23 sequentially stores measurement information such as measurement date and time, measurement temperature, and measurer information received from the diagnostic device 3 as will be described later. The wireless IC tag 2 is in a sheet form and can be attached (arranged) to an arbitrary solid including the diagnostic object F.

  As shown in FIG. 3, the diagnostic apparatus 3 is a portable handy type. As shown in FIG. 4, the diagnostic apparatus 3 mainly includes a temperature measuring unit (temperature measuring unit) 31 and a reader / writer (information reading unit, information writing unit). ) 32, buzzer (alarm unit) 33, clock 34, display unit 35, storage unit 36, diagnostic unit (diagnostic unit) 37, input / output unit 38, monitoring unit 39, control these And a control unit 40.

  The temperature measuring unit 31 can remotely measure the temperature at an arbitrary position (part) of the diagnostic object Fm, and has a configuration equivalent to an infrared thermometer (radiation thermometer). That is, infrared rays emitted from the diagnostic object Fm are collected by a lens and focused on a detection element called a thermopile. Then, an electrical signal corresponding to the amount of infrared energy is obtained by a thermopile, and this is linearized and emissivity corrected to calculate the temperature. In addition, when the measurement switch 3A in FIG. 3 is pressed, the temperature measurement unit 31 is activated so that the temperature can be measured.

  The reader / writer 32 includes an antenna and functions as an IC tag reader and an IC tag writer that read / write information from / to the wireless IC tag 2. That is, information is read by receiving radio waves from the wireless IC tag 2 with an antenna, and information is written by transmitting radio waves from the antenna to the wireless IC tag 2. Specifically, as described later, when the reception switch 3B in FIG. 3 is pressed, information such as the allowable temperature 22 and each measurement data 23 is received (read) from the wireless IC tag 2, and the transmission switch in FIG. When 3C is pressed, the measurement information instructed from the control unit 40 is transmitted (written) to the wireless IC tag 2.

  The buzzer 33 emits an alarm sound in accordance with a command from the control unit 40. Specifically, when the diagnosis unit 37, which will be described later, is diagnosed as having a temperature abnormality, a command is issued from the control unit 40, The buzzer 33 emits an alarm sound. The clock 35 measures the date and time based on the clock of a CPU (Central Processing Unit). The display unit 35 is composed of a liquid crystal display and displays the current time, measured temperature, and the like. The storage unit 36 is a memory that stores information received from the wireless IC tag 2 (allowable temperature 22, each measurement data 23), a measured temperature measured by the temperature measuring unit 31, and the like, Measurer information is stored.

  The diagnosis unit 37 diagnoses whether there is a temperature abnormality based on the measured temperature and the allowable temperature of the diagnostic object Fm, that is, diagnoses whether the diagnostic object Fm has a temperature abnormality. Specifically, the temperature measured by the temperature measuring unit 31 and the allowable temperature read by the reader / writer 32 and stored in the storage unit 36 are compared to determine whether or not the measured temperature is within the allowable temperature. . The diagnosis unit 37 is activated simultaneously with the activation of the temperature measurement unit 31 and is always activated while the temperature measurement unit 31 is activated. In other words, the presence or absence of temperature abnormality is always diagnosed while measuring the temperature.

  The input / output unit 38 outputs measurement information such as measurement information and the presence / absence of temperature abnormality to the outside, and is an interface that can be used to create a report.

  When the monitoring unit 39 determines whether the temperature measuring unit 31 correctly measures the temperature of the diagnostic object Fm, that is, whether the infrared ray from the diagnostic object Fm is correctly captured, and does not measure correctly In this case, an alarm is issued (excluded from measurement). That is, when the temperature of the diagnostic object Fm is continuously measured as described later, when the continuity of the measured temperature is impaired, that is, when the measured temperature suddenly rises or falls rapidly, It judges that it is not measuring correctly and issues an alarm. On the other hand, when the measurer M determines that the temperature of the diagnostic object Fm is correctly measured, the measured temperature is captured by pressing a switch (not shown).

  Next, a procedure for diagnosing the presence / absence of a temperature abnormality by the temperature abnormality diagnosis system 1 having such a configuration will be described based on the flowchart shown in FIG. Here, in this embodiment, as shown in FIG. 1, it is assumed that a diagnostic object Fm such as a transformer, a circuit breaker, a distribution board, and a power cable is arranged in the diagnosis target facility F.

  First, as preparations before diagnosis, the ID 21 of the wireless IC tag 2 and the allowable temperature 22 of the diagnostic object Fm to which the wireless IC tag 2 is attached are attached to the wireless IC tag 2 attached to each diagnosis object Fm. Write (step S1). Then, each wireless IC tag 2 is attached to the corresponding diagnosis object Fm (step S2).

  Next, at the time of diagnosis, the measurer M carries the diagnostic device 3 and enters the diagnostic target facility F, and first receives the diagnostic device 3 (reader / writer 32) toward the wireless IC tag 2 of the diagnostic target Fm. Press switch 3B. Then, information such as the allowable temperature 22 is read from the wireless IC tag 2 by the reader / writer 32 (step S3). The read information is stored in the storage unit 36 and displayed on the display unit 35 (step S4). That is, the allowable temperature 22 of the diagnosis target facility F is displayed, and when the read data includes the measurement data 23, the measurement information such as the measurement date and time and the measurement temperature is displayed.

  Subsequently, the measurement switch 3A is pressed to activate the temperature measurement unit 31, and the temperature of the diagnostic object Fm is measured (step S5). At this time, as shown in FIG. 6, while pressing the measurement switch 3A, for example, when the lens of the temperature measurement unit 31 is scanned toward the power cable that is the diagnostic object Fm, each position (each part of the power cable) ) Is continuously measured, and the measured temperature is sequentially displayed on the display unit 35 (step S6). At the same time, the diagnosis unit 37 is activated, and the presence or absence of temperature abnormality is sequentially diagnosed as described above (step S7). If it is diagnosed that there is a temperature abnormality, an alarm sound is emitted from the buzzer 33 (step S8). Further, the measurement temperature and the measurement date and time measured while the measurement switch 3A is pressed 1 are sequentially stored in the storage unit 36. On the other hand, the monitoring unit 39 determines whether or not the temperature of the diagnostic object Fm is correctly measured as described above. If the temperature is not correctly measured, an alarm is issued.

  Next, when the diagnosis for the diagnostic object Fm is completed, the diagnostic device 3 (reader / writer 32) is pointed toward the wireless IC tag 2 of the diagnostic object Fm and the transmission switch 3C is pressed, so that the reader / writer The measurement information is written in the wireless IC tag 2 by 32 (step S9). That is, in this embodiment, the maximum temperature that was the highest temperature and its measurement date and time, the lowest temperature that was the lowest temperature, and the measurement date and time were calculated from the storage unit 36 while the measurement switch 3A was pressed immediately before. Then, it is transmitted to the wireless IC tag 2 together with the measurer information and the like. Then, the measurement date and time, measurement temperature, measurer information, and the like are stored (written) as measurement information in the measurement data 23 of the IC chip of the wireless IC tag 2. Next, when the diagnosis for all the diagnosis objects Fm that are the objects of diagnosis is completed (in the case of “Y” in step S10), the diagnosis is ended, and when the diagnosis is not completed (“N” in step S10). In this case, the process returns to step S3 and the same operation is repeated.

  On the other hand, in addition to the above diagnosis, when it is desired to check the past diagnosis history, the following may be performed. That is, the diagnostic apparatus 3 is carried into the diagnosis target facility F, and information is read as described above from the wireless IC tag 2 of the diagnosis target object Fm to be confirmed. Then, when the read information, that is, the allowable temperature 22 of the diagnosis target facility F and the measurement data 23 are included, each measurement date and time, measurement temperature, measurer information, and the like are displayed on the display unit 35.

  As described above, according to this temperature abnormality diagnosis system 1, the reader / writer 32 of the diagnostic device 3 reads the allowable temperature from the wireless IC tag 2 disposed on the diagnostic object Fm, and the temperature of the diagnostic device 3. By measuring the temperature of the diagnostic object Fm by the measurement unit 31, the presence or absence of temperature abnormality is diagnosed. That is, the diagnostic device 3 is carried in the diagnostic target facility F, which is the site where the diagnostic target Fm is installed, and information reading and temperature measurement are performed to quickly determine whether there is a temperature abnormality on the spot. it can. Moreover, since the presence / absence of temperature abnormality is diagnosed based on the allowable temperature and the measured temperature of the diagnostic object Fm, it is possible to make an appropriate determination according to the temperature characteristics of the diagnostic object Fm.

  In addition, when it is diagnosed that there is a temperature abnormality, an alarm sound is emitted from the buzzer 33, so that the measurer M and the like can reliably recognize the temperature abnormality on the spot. Furthermore, the measured temperature measured by the diagnostic device 3 and the measurement date and time can be written in the wireless IC tag 2 of the diagnostic object Fm. For this reason, the measured temperature and the measurement date and time are arbitrarily read from the wireless IC tag 2 at the site where the diagnostic object Fm is installed, and past temperature conditions and temperature history can be easily and quickly confirmed. Can do. Since the temperature status and temperature history can be confirmed easily and quickly at the site, it becomes possible to investigate the cause of the temperature abnormality and to examine and implement countermeasures appropriately and quickly at the site.

  Although the embodiment of the present invention has been described above, the specific configuration is not limited to this embodiment, and even if there is a design change or the like without departing from the gist of the present invention, the present invention is not limited to this embodiment. include. For example, in this embodiment, the allowable temperature as described above is stored as the allowable temperature 22 of the wireless IC tag 2, but the allowable temperature according to conditions such as humidity is stored, and the hygrometer is stored in the diagnostic device 3. May be provided to diagnose the presence or absence of temperature abnormality based on the humidity and the measured temperature. Further, a thermometer for measuring the ambient (atmospheric) temperature may be provided in the diagnostic device 3, and the presence or absence of temperature abnormality may be diagnosed by comparing the ambient temperature with the measured temperature of the diagnostic object Fm.

  Furthermore, in this embodiment, the monitoring unit 39 determines whether or not the temperature of the diagnostic object Fm is correctly measured by monitoring the continuity of the measured temperature. May be. For example, the boundary between the diagnostic object Fm and the non-object is colored, and the color is detected to determine that the object is not the object of diagnosis, or the reflectance or illuminance difference between the diagnostic object Fm and the non-object You may judge by.

  Further, in this embodiment, the temperature measuring unit 31 is configured by an infrared thermometer, but may be configured by other non-contact type thermometers such as a total radiation thermometer and an optical thermometer. Furthermore, as the information storage medium, a device other than the wireless IC tag 2, such as a bar code, may be used. Of course, the information storage medium can also be applied to a diagnostic object Fm arranged outdoors such as a steel tower insulator. is there.

1 is a schematic configuration diagram of a temperature abnormality diagnosis system according to an embodiment of the present invention. It is a data block diagram of the information memorize | stored in the wireless IC tag in the temperature abnormality diagnostic system of FIG. It is a top view which shows the external appearance of the diagnostic apparatus in the temperature abnormality diagnostic system of FIG. It is a schematic block diagram of the diagnostic apparatus of FIG. It is a flowchart which shows the procedure etc. which diagnose the presence or absence of temperature abnormality by the temperature abnormality diagnostic system of FIG. It is a figure which shows the state which is diagnosing the presence or absence of temperature abnormality, measuring temperature with the diagnostic apparatus of FIG.

Explanation of symbols

1 Temperature abnormality diagnosis system 2 Wireless IC tag (information storage medium)
3 diagnostic device 3A measurement switch 3B reception switch 3C transmission switch 31 temperature measurement unit (temperature measurement means)
32 reader / writer (information reading means, information writing means)
33 Buzzer (alarm means)
34 Clock 35 Display unit 36 Storage unit 37 Diagnosis unit (diagnostic means)
38 Input / output unit 39 Monitoring unit 40 Control unit M Measuring person F Diagnosis facility Fm Diagnosis object

Claims (4)

A temperature abnormality diagnosis system for measuring the temperature of a diagnostic object and diagnosing the presence or absence of temperature abnormality,
An information storage medium that can be disposed on the diagnostic object, stores information including an allowable temperature of the diagnostic object, and can read the information from the outside;
A portable diagnostic device, and the diagnostic device includes:
Temperature measuring means for remotely measuring the temperature at an arbitrary position of the diagnostic object;
Information reading means for reading the information from the information storage medium;
A temperature abnormality diagnosis system comprising: a diagnosis unit that diagnoses the presence or absence of a temperature abnormality based on a temperature measured by the temperature measurement unit and an allowable temperature of the information read by the information reading unit.   The temperature abnormality diagnosis system according to claim 1, further comprising: an alarm unit that issues an alarm when the diagnosis unit diagnoses that there is a temperature abnormality by the diagnosis unit. The information storage medium can write information from outside,
3. The diagnostic apparatus according to claim 1, further comprising information writing means for writing information to the information storage medium, wherein the measured temperature can be written to the information storage medium by the information writing means. The temperature abnormality diagnosis system according to Item 1. The temperature abnormality diagnosis system according to claim 3, wherein the diagnostic device includes a clock for measuring date and time, and the measurement date and time of the measured temperature can be written in the information storage medium together with the measured temperature.

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