JP2017054391A - Meter reading system and meter reading terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a meter reading system capable of improving the accuracy of error determination and a meter reading terminal.SOLUTION: A meter reading system 1A includes an imaging part 101, a data digitization part 102 which converts the display value of a measurement display into numerical measurement data from an imaged measurement device image, a measurement device identification part 103 which identifies the measurement device identification code of a measurement device, a data storage part 203 which associates the measurement device identification code and the numerical measurement data and stores them as time series data, a measurement prediction part 201 which predicts the display value of the measurement display on the basis of the time series data, a measurement abnormality determination part 202 which compares new numerical measurement data with predicted measurement data predicted by the measurement prediction part 201 on the basis of the time series data and determines the presence or absence of abnormality in the new numerical measurement data, and an abnormality notification part 105 which issues notification on the basis of a determination result by the measurement abnormality determination part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a meter-reading system and a meter-reading terminal that digitize and collect measured values of a measurement display device included in a measuring device from an image obtained by imaging the measuring device.

  Metering of usage amounts of electricity, gas, water, etc. is performed by reading the display of a meter (for example, an integrated wattmeter) installed for each consumer by a meter reader visiting the consumer. In recent years, instead of such meter reading, technology has been developed to remotely measure the watt-hour meter via a communication line. However, in order to perform remote meter reading, it is necessary to replace the already installed integrated wattmeter with an integrated wattmeter capable of remote meter reading.

  Therefore, a meter reading system has been proposed that recognizes an integrated power value from an image obtained by capturing an integrated wattmeter with a camera and also recognizes an identification code that identifies a consumer to be charged (Patent Document 1).

  This meter-reading system calculates the amount of power used in the predetermined period from the integrated power value obtained by two meter readings performed after a predetermined period, and prevents errors in digitization (such as image recognition errors). Therefore, if there is a certain difference in power consumption obtained between the two readings before and after the meter reading, it is determined that there is a possibility of error in the meter reading, and an alarm is issued to visually inspect the meter reader. It prompts for confirmation of values and the like.

  Furthermore, a remote meter reading system that connects a meter reading terminal and a remote meter reading server provided in a meter reading center or the like via a public communication line has also been proposed (Patent Document 2). These meter-reading systems can implement efficient meter-reading using equipment such as an existing integrating wattmeter as it is.

  Such remote meter reading is expected to be applied to various plants. For example, when the operation state of the plant is remotely monitored by a measuring device arranged in a monitoring center (for example, a central control room), all the measuring devices cannot be concentrated on the monitoring center. Then, the operator must go around the plant site in order to monitor the measuring device arranged away from the monitoring center. Therefore, it is conceivable to install a remote meter reading terminal (remote monitoring terminal) near the device to be measured and remotely monitor the display value of the measurement display of the measuring device as numerical measurement data. Of course, the remote monitoring server and the remote meter reading terminal arranged in the monitoring center can be connected via a dedicated or general communication line.

JP-A-8-69595 JP 2012-208763 A

  By the way, when a measuring device such as an integrating wattmeter is imaged with a camera, the amount of light incident on the measuring device (for example, sunlight, illumination light, etc.), the change in the incident angle, and the reflection that occurs on the surface of the measuring device. Image recognition mistakes can occur. For example, the display value displayed as 6 is mistakenly recognized as 5, or the angle of the pointer of the analog meter is mistakenly recognized.

  In the invention disclosed in Patent Document 1, the possibility of an error in the meter reading result is determined based on the difference in power consumption obtained by the two previous and following meter readings. However, these decisions are affected by seasonal fluctuations. This is because the amount of power used varies depending on the operating status of the air conditioner or the like, so the variation in the amount of power used in each month relative to the previous month varies with the season. That is, it is difficult to determine an error in the meter reading result with high accuracy based on the two previous and following meter reading results. As a result, in this meter reading system, in most meter readings, the meter reader must visually check the integrated power value and the identification code to confirm the quality of the meter reading result.

  In the invention disclosed in Patent Document 2, an error in a meter reading result is corrected by a meter reader comparing a meter value (display value of a measurement display) with a meter reading result. That is, the present invention requires visual confirmation by the meter reader, and is merely an omission of meter reading input by manual operation of the meter reader. Of course, it is impossible to use such a meter reading system for remote monitoring of a plant or the like.

  Accordingly, an object of the present invention is to improve the accuracy of error determination of numerical measurement data, and to realize a meter reading system and a meter reading terminal that can be preferably used for remote monitoring of a plant or the like.

  In order to solve the above problems, a meter reading system according to the present invention (Claim 1) includes an imaging unit, a data digitizing unit, a measuring device identifying unit, a data storage unit, a measurement predicting unit, and a measurement abnormality determination. Department and an abnormality reporting section.

  The imaging unit captures an image of a measurement device including one or more measurement indicators. The data digitizing unit converts the display value of the measurement display device into numerical measurement data from the image of the measuring device captured by the imaging unit. The measurement device identification unit identifies a measurement device identification code (measurement device ID) assigned to the measurement device. The data storage unit stores the display value of the measurement display as time series data associated with the measurement device ID. The measurement prediction unit predicts a measurement result of the measurement device based on past time series data. The measurement abnormality determination unit compares the predicted measurement data predicted by the measurement prediction unit and the new numerical measurement data based on the image of the measurement display newly captured by the imaging unit based on a common measurement device ID. The presence or absence of abnormality in the new numerical measurement data is determined. The abnormality reporting unit issues a report based on the determination result by the measurement abnormality determining unit.

  The meter reading system according to the present invention having the above-described configuration can remotely measure a measuring device (such as an integrated wattmeter) by connecting, for example, a meter reading center provided with a data storage unit and a meter reading terminal via a communication line. Here, the meter-reading terminal includes at least an imaging unit, a data digitizing unit, a measuring device identifying unit, and an abnormality reporting unit, and transmits / receives numerical measurement data to / from at least the data storage unit via a communication line. (Claim 7).

  The meter-reading terminal according to the present invention may further include a terminal-side data storage unit that receives and stores all or part of the time-series data (claim 8).

  The measurement abnormality determination unit determines whether there is an abnormality in the new numerical measurement data based on whether the new numerical measurement data is greater than or equal to a predetermined value or less than a predetermined value. The measurement device ID is a device identification code (for example, a serial number of the measurement device) displayed so as to be imaged on the measurement device, and the measurement device identification unit identifies the device identification code from an image obtained by imaging the measurement device. (Claim 3). The measurement device ID is position information indicating the installation location of the measurement device, and the measurement device identification unit identifies the measurement device by detecting the installation location of the measurement device by the global orientation system.

  The measurement indicator is an analog indicator or a numerical indicator (Claim 5), or is a water level gauge or the like that measures and displays the positional displacement of the measurement object by a scale displayed on the analog indicator (Claim). 6).

  In the meter reading system and the meter reading terminal having the above-described configuration, the measurement prediction unit predicts the measurement result (display value of the measurement display) of the measurement device based on the time series data accumulated in the data accumulation unit. The accuracy of error determination can be increased. Therefore, the meter-reading system and meter-reading terminal concerning this invention can reduce the reconfirmation operation | work of the display value etc. by a meter-reading person etc., and also enable the application to remote monitoring of a plant etc.

It is a figure which shows the structure etc. of the meter-reading system which concerns on this invention, and a meter-reading terminal (Example 1). It is a figure which shows the structural example of the measuring device used as the meter-reading object of the meter-reading system and meter-reading terminal shown in FIG. It is a figure which shows the structure etc. of the meter-reading system which concerns on this invention, and a meter-reading terminal (Example 2). It is a figure which shows the structural example of the measuring device (liquid level meter) used as the meter-reading object of the meter-reading system shown in FIG. 1 and FIG. 2, and a meter-reading terminal.

  Hereinafter, a meter reading system according to the present invention will be described with reference to the drawings.

  One embodiment of the meter reading system and meter reading terminal according to the present invention will be described by taking the meter reading of the integrating wattmeter as an example (the meter reading system and meter reading terminal according to the present invention is not limited to the meter reading of the integrating wattmeter, but a gas meter, water pipe It may be one that reads a meter or the like.)

  A meter reading system 1A shown in FIG. 1 is obtained by connecting a meter reading terminal 10 and a meter reading center 20 via a communication line 30, and a plurality of meter reading terminals 10 can also be connected. The meter-reading terminal 10 includes an imaging unit 101, a data digitizing unit 102, a measuring device identifying unit 103, a terminal-side data accumulating unit 104, and an abnormality reporting unit 105, and preferably a display 106 for displaying numerical measurement data and the like in numbers. It has. The meter reading center 20 includes at least a measurement prediction unit 201, a measurement abnormality determination unit 202, and a data storage unit 203.

<Target meter reading>
For example, an integrating wattmeter or the like (measuring device) 40 (FIG. 2A), which is a meter reading target (measurement target) in the meter reading system 1A, is installed in each customer's residence, store, or the like. The integrated wattmeter 40 displays the integrated value of the amount of power used in numbers, and includes a number display (measurement display) 41, a number display unit 411 provided in the number display 41, and a manufacturing number (measurement device ID). A display unit 412 is provided. The same applies to the gas meter.

  For example, a water meter 50 (FIG. 2 (b)) is an analog display (measurement display) 51, analog meters 511 to 517 provided in the analog display 51, and manufacturing. Some include a number (measuring device ID) display unit 518 (the analog display 51 has a substantially circular shape in plan view, for example, and the analog meters 511 to 517 are arranged in a substantially circular shape on the analog display 51. .)

  The analog meter 511 has a substantially circular shape in plan view, and indicates the numbers 0 to 9 expressed at intervals of 36 degrees at the tip of the pointer 511a that rotates clockwise with the center thereof as the center of rotation. The same applies to the analog meters 512 to 517. Here, the analog meter 511 displays a numerical value with the highest number of digits, and the analog meter 517 displays a numerical value with the lowest number of digits.

  Of course, the analog meter is not limited to the one having the above-described configuration. For example, a fan-shaped region is written at a predetermined interval on the edge of the fan-shaped portion at the tip of the pointer centering on the main (kamage) portion. It may indicate a numerical value.

  As described above, the meter reading system 1A can be used as a meter-reading target regardless of whether it is a measuring device that displays a measurement result by a number or a measuring device that displays an angle of a needle of an analog meter.

<Reading terminal>
The meter-reading terminal 10 images the integrated wattmeter 40 by the imaging unit 101. Specifically, the meter-reading terminal 10 operated by the meter-reading person images the number display 41 of the integrated wattmeter 40 installed in the residence of the customer or the like with an imaging unit (for example, a television camera or a digital camera) 101. To do.

  The meter-reading terminal 10 converts the display value of the numeric display 41 from the image of the integrating wattmeter 40 obtained by the imaging unit 101 into numerical measurement data by the data digitizing unit 102. The data digitizing unit 102, for example, digitizes 2, 0, 0, 0 displayed on the numeric display unit 411 of the numeric display 41 as 2000, and further gives a unit (kilowatt hour) to give 2000 kilowatt hour, etc. Convert to 3-digit numerical measurement data. Preferably, the meter-reading terminal 10 displays the numerical measurement data on the display unit 106.

  When the meter-reading target is the water meter 50, the meter-reading terminal 10 images the water meter 50 with the imaging unit 101, and the analog meters 511 to 517 from the image of the analog display 51 of the water meter 50 obtained by the imaging unit 101. Is converted into numerical measurement data by the data digitizing unit 102. This conversion into numerical measurement data is performed by recognizing images of the angles and numerical notations of the hands of the analog meters 511 to 517.

  The meter-reading terminal 10 may be configured as a dedicated meter-reading terminal device having the above-described configuration and functions, or may be a portable terminal device (smart phone, tablet terminal, etc.) that operates by installing predetermined software. .

<Identification of meter reading target>
The integrated wattmeter 40 is assigned a unique integrated wattmeter ID (measuring device ID) for identifying a consumer. The integrated wattmeter ID is, for example, a manufacturing number of the integrated wattmeter 40 or position information in a global orientation system (hereinafter referred to as GPS) indicating the installation location of the integrated wattmeter 40. Any integrated wattmeter ID is identified by the measuring device identifying unit 103 of the meter-reading terminal 10.

  When the integrated wattmeter ID is the serial number of the integrated wattmeter 40, the meter-reading terminal 10 identifies the serial number of the integrated wattmeter 40 based on the image of the integrated wattmeter 40 obtained by the imaging unit 101. Specifically, the meter-reading terminal 10 is manufactured by converting the image of the manufacturing number displayed on the manufacturing number display unit 412 of the number display unit 41 of the integrating wattmeter 40 into numerical measurement data by the measuring device identification unit 103, for example. Identify the number. When the meter-reading target is the water meter 50, the meter-reading terminal 10 identifies the serial number from the serial number image displayed on the serial number display unit 518 in the same manner.

  When the integrated wattmeter ID is GPS position information, the measuring device identifying unit 103 of the meter reading terminal 10 uses the GPS position information obtained by a GPS receiver (not shown) of the meter reading terminal 10 at the time of meter reading as an integrated wattmeter. Recognize as ID.

  The meter-reading terminal 10 associates the identified integrated wattmeter ID with the numerical measurement data obtained by the meter-reading, and transmits it to the meter-reading center 20 via the communication line 30 (for example, the integrated wattmeter ID and the numerical measurement data are transmitted). It is transmitted as a single packet data.)

  Here, the meter-reading terminal 10 may store the numerical measurement data of each customer obtained by meter-reading in a plurality of consumers in the terminal-side data storage unit 104 in association with the integrated wattmeter ID. Then, the meter-reading terminal 10 can store numerical measurement data associated with the integrated wattmeter ID, and can transmit it to the meter-reading center 20 via a communication line as appropriate. The integrated power stored in the meter-reading center 20 can also be transmitted. Numerical measurement data (time-series data) associated with the meter ID can be received from the meter-reading center 20 via a communication line as appropriate.

<Meter reading center>
The meter-reading center 20 accumulate | stores the integral wattmeter ID and numerical measurement data which the meter-reading terminal 10 transmitted as time series data. For example, the power usage amount for each consumer that has been measured over the past year is accumulated as time-series data.

  In addition, the meter reading center 20 stores the accumulated wattmeter ID input by the operator of the meter reading center 20 in, for example, the data storage unit 203 and transmits it to the meter reading terminal 10 via the communication line 30 as necessary. The meter-reading terminal 10 that has received the integrated wattmeter ID can associate the integrated wattmeter ID with the numerical measurement data.

  The meter-reading center 20 may send and receive various data to and from the meter-reading terminal 10 without going through the communication line 30. For example, the meter reading terminal 10 and the data storage unit 203 may be connected by a connection cable or the like to transmit / receive various data.

<Measurement prediction unit>
The measurement prediction unit 201 of the meter-reading center 20 predicts new numerical measurement data from the accumulated time series data.

  For example, the difference between the power consumption at the time of the meter reading in October of the previous year and the power consumption at the time of the meter reading in November of the previous year is an increase of 50 kilowatt hours (in November), It is assumed that the difference between the power consumption at the time of the November meter reading in the previous year and the power consumption at the time of the December meter reading in the previous year is an increase of 200 kilowatt hours (December is an increase).

  In this case, when predicting the power usage amount in November of this year in the customer A, the measurement prediction unit 201 calculates, for example, minus 50 of the difference in power usage amount between October and November of last year (an increase of 50 kilowatt hours). By adding the range of% to plus 50% (25-75 kWh) to the power usage in October this year, we forecast the power usage in November this year.

  Similarly, when predicting the electricity usage amount in December of this year for the customer A, the measurement prediction unit 201 determines, for example, from minus 50% of the difference in electricity usage between November and December last year (increase of 200 kWh). By adding the plus 50% range (100-300 kWh) to the power usage in November this year, we predict the power usage in December this year.

  In this way, the measurement prediction unit 201 predicts the power usage amount that is less affected by seasonal fluctuations (predicts the power usage amount with high accuracy).

<Measurement abnormality determination unit>
The measurement abnormality determining unit 202 of the meter-reading center 20 uses a common integrated wattmeter that uses the power usage obtained from the numerical measurement data received from the meter-reading terminal 10 and the predicted measurement data (prediction of power usage) by the measurement prediction unit 201. Compare based on ID.

  Here, if the comparison result is within the range of the predicted measurement data, the measurement abnormality determination unit 202 determines that there is no error in the numerical measurement data received from the meter-reading terminal 10, while the comparison result is the predicted measurement data. If it is outside the range, it is determined that the numerical measurement data received from the meter-reading terminal 10 may have an error.

  For example, when the electricity usage by the meter reading in October this year is 70 kilowatt hours and the electricity usage amount by the November meter reading this year is 110 kilowatt hours (an increase of 40 kilowatt hours compared to October), the measurement abnormality determination unit 202 determines that there is no abnormality in the meter reading result. This is because the predicted measurement data (prediction of power consumption) in this November's meter reading is that of October of this year (70 kilowatt hours) plus 25 to 75 kilowatt hours.

  In addition, when customer A uses 110 kWh of electricity in November this year's meter reading and 190 kWh in December this year's meter reading (an increase of 80 kWh compared to November), a measurement abnormality determination unit 202 determines that the meter reading result may be abnormal. This is because the predicted measurement data (prediction of power consumption) in this year's December meter reading is that of November of this year (110 kilowatt hours) plus 100 to 300 kilowatt hours.

  When abnormality determination is made, the measurement abnormality determination unit 202 transmits a signal indicating that there is a possibility of error in the numerical measurement data to the meter-reading terminal 10 that has transmitted the numerical measurement data via the communication line 30.

<Abnormality Report Department>
The abnormality reporting unit 105 of the meter reading terminal 10 that has received the abnormality determination by the measurement abnormality determining unit 202 issues a notification. The abnormality reporting unit 105 issues a report by, for example, blinking an indicator lamp (not shown) provided on the meter reading terminal 10 or driving a buzzer (not shown) provided on the meter reading terminal 10.

  The meter reader who has visually or audibly recognized the report issued by the abnormality reporting unit 105 compares the numerical measurement data displayed on the display 106 of the meter reading terminal 10 with the display of the integrated wattmeter 40 as the meter reading target. Check for meter reading errors.

  When the meter reader confirms that there is no error in the meter reading result, he / she operates the meter reading terminal 10 to notify the meter reading center that there is no error in the meter reading result. Upon receipt of this notification, the meter reading center 20 stores the already received numerical measurement data in the data storage unit 203 together with the integrated wattmeter ID as correct.

  When the meter reader confirms that there is an error in the meter reading result, he / she operates the meter reading terminal 10 to read the meter again (images are captured again by the imaging unit 101), or the numerical value displayed on the number display 41 of the integrating wattmeter 40 Is input by manual operation of a numeric keypad (not shown) of the meter reading terminal 10 or the like. The meter-reading terminal 10 transmits the numerical measurement data obtained by the repeated meter reading or the numerical measurement data input by manual operation to the meter-reading center 20 together with the integrated wattmeter ID. The meter reading center 20 that has received the numerical measurement data transmitted in this manner stores the numerical measurement data in the data storage unit 203 together with the integrated wattmeter ID. The same applies to the gas meter.

  Next, another embodiment (Example 2) of the meter reading system and the meter reading terminal according to the present invention will be described. Here, the same reference numerals are given to components having the same functions as those of the meter-reading system 1A, and description of these components is omitted.

  The meter-reading system 1B (FIG. 3) which concerns on Example 2 performs remote meter-reading (remote monitoring) for the measuring device arrange | positioned in a remote place.

  In the meter reading system 1B, a meter reading terminal 10 and a meter reading center (monitoring center) 20 are connected via a communication line 30, and a measuring device as a meter reading target (monitoring target) is, for example, a device constituting a plant. It is various measuring devices which show an operation state. The various measuring devices may be either digital measuring devices or analog measuring devices. The digital measuring device is configured in the same manner as the integrating wattmeter 40, for example, and displays the measured value in numbers. The analog measuring device is configured in the same manner as the water meter 50, for example, and displays the measured value by the rotation angle of the pointer.

  As with the meter reading system 1A, the meter reading terminal 10 arranged corresponding to each measuring device images the digital measuring device 40 or the analog measuring device 50 with the imaging unit 101, and the data digitizing unit displays the value displayed by the measuring device. The data is converted into numerical measurement data by 102, and the measurement device ID of the measurement device is identified by the measurement device identification unit 103 to associate the measurement device ID with the numerical measurement data.

  In the meter reading system 1B, the meter reading center (monitoring center) 20 has an abnormality reporting unit 205 (the meter reading terminal 10 in the meter reading system 1B may not have the abnormality reporting unit 105). The abnormality reporting unit 205 blinks an indicator lamp installed in the meter reading center (monitoring center) 20 or drives a buzzer or the like based on the abnormality determination issued by the measurement abnormality determining unit 202. At this time, the meter-reading center 20 specifies the meter-reading terminal 10 that has transmitted the numerical measurement data that exceeds the prediction range of the measurement predicting unit 201 based on the measuring device ID.

  In other words, the meter-reading center (monitoring center) 20 specifies a measuring device that may have an error in the numerical measurement data based on the measuring device ID, thereby quickly identifying a device in which an abnormality has occurred (or a device in which an abnormality may have occurred). And let the operator know that. In this way, the meter reading system 1B notifies the operator who is present in the meter reading center (monitoring center) 20 by identifying the abnormality (or possibility of abnormality) occurring in the equipment scattered in the site of the plant. Can do.

  Here, since the meter-reading terminal 10 in the meter-reading system 1B identifies the measuring device to be metered based on the measuring device ID, it is easy to change the combination of the meter-reading terminal 10 and the measuring device to be metered. For example, even when the meter reading terminal 10 combined with one measuring device is combined with another measuring device, the operator does not need to input information relating to the combination change to the meter reading system 1B. It is only necessary to move the meter reading terminal 10 combined with one measuring device to another measuring device.

<Modification>
For example, a liquid level gauge 60 is also included in a measuring device for remote monitoring of a plant or the like. The liquid level gauge 60 measures the height of the liquid level 71 with a scale displayed on the display (measurement display) 61 by positioning the display 61 in the liquid 70, for example (FIG. 4), and a water channel. The water level is measured by being disposed in the tank, or the height of the liquid in the tank is measured by being disposed in the tank.

  When remotely monitoring the liquid level meter 60, the meter-reading terminal 10 images the liquid level 71 and the display 61 with the imaging unit 101, and from the images of the liquid level 71 and the display 61 obtained by the imaging unit 101, The display value of the display unit 61 that coincides with the liquid level 71 is recognized, and an image of this display value is converted into numerical measurement data by the data digitizing unit 102. The meter-reading terminal 10 identifies the liquid level meter 60 from the serial number of the liquid level meter 60 or GPS information.

  Thus, the meter reading system 1B including the liquid level meter 60 in the meter reading terminal 10 can perform remote monitoring of the liquid level.

  The meter-reading system and meter-reading terminal according to the present invention are not limited to the above-described meter-reading system and meter-reading terminal, and can be appropriately modified without changing their gist. For example, a measurement prediction unit that performs measurement prediction based on time-series data stored in the data storage unit may be provided in a measurement meter reading center or a meter reading terminal. Moreover, since the measurement abnormality determination unit performs the determination based on the measurement prediction, it may be on the meter reading center side or on the meter reading terminal side.

  The meter-reading system and meter-reading terminal according to the present invention can be manufactured industrially, and can be sold and used commercially. Therefore, the meter-reading system and the meter-reading terminal can be used industrially with economic value. .

1A, 1B Meter reading system 10 Meter reading terminal 40, 50, 60 Measuring device 41 Measurement display (numerical display)
51 Measurement display (analog display)
DESCRIPTION OF SYMBOLS 101 Image pick-up part 102 Data digitization part 103 Measuring apparatus identification part 104 Terminal side data storage part 105,205 Abnormality notification part 201 Measurement prediction part 202 Measurement abnormality determination part 203 Data storage part

Claims (8)

An imaging unit for imaging a measuring device including one or more measurement indicators;
A data digitizing unit for converting a display value of the measurement display device into numerical measurement data from an image of the measuring device imaged by the imaging unit;
A measurement device identification unit for identifying a measurement device identification code assigned to the measurement device;
A data storage unit that stores the measurement device identification code and the numerical measurement data in association with each other as time series data,
A measurement prediction unit that predicts a display value of the measurement display based on the time-series data;
Predictive measurement predicted by the measurement prediction unit based on new numerical measurement data based on the image of the measurement display unit newly captured by the imaging unit and time-series data accumulated before the new numerical measurement data A measurement abnormality determination unit that determines whether or not there is an abnormality in the new numerical measurement data by comparing the data with a common measurement device identification code;
A meter reading system comprising: an abnormality reporting unit that issues a report based on a determination result by the measurement abnormality determining unit.   2. The meter reading system according to claim 1, wherein the measurement abnormality determination unit further determines whether the new numerical measurement data is based on whether the new numerical measurement data is greater than or equal to a predetermined value or less than a predetermined value. The meter reading system according to claim 1, wherein presence or absence of abnormality is determined.   The measurement device identification code is a device identification code displayed so as to be imaged by the measurement device, and the measurement device identification unit identifies the measurement device by identifying the device identification code from an image obtained by imaging the measurement device. The meter-reading system according to claim 1, wherein:   The measurement device identification code is position information indicating an installation location of the measurement device, and the measurement device identification unit identifies the measurement device by detecting the installation location of the measurement device by a global orientation system. The meter-reading system according to claim 1 or 2.   5. The meter reading system according to claim 1, wherein the measurement indicator is an analog indicator that indicates a measured value by a change in the angle of a pointer, or a numeric indicator that indicates a measured value by a number.   5. The meter reading system according to claim 1, wherein the measurement display measures and displays a positional displacement of a measurement target using a scale displayed on an analog display. In the meter-reading system in any one of Claims 1 thru | or 6, It is a meter-reading terminal for obtaining the said numerical measurement data from the image of the said measurement indicator,
It comprises at least the imaging unit, the data digitizing unit, the measuring device identifying unit, and the abnormality reporting unit, and is capable of transmitting and receiving the numeric measurement data via at least the data storage unit and a communication line. Meter reading terminal.   8. The meter-reading terminal according to claim 7, further comprising a terminal-side data storage unit that receives and stores all or part of the time-series data.

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