JP7365884B2 - data recording device - Google Patents

Description

The present invention relates to a data recording device that records measurement data from a sensor that detects a physical quantity in a measurement atmosphere.

A wide variety of sensors such as temperature sensors, humidity sensors, and gas sensors are known as sensors for detecting physical quantities in a measurement atmosphere.

As a device using these sensors, as disclosed in Patent Document 1 below, for example, a detection signal from a sensor placed on a measurement object such as a furnace is measured, and based on this measurement result, for example, a heater, Controllers that control controlled objects such as valves and motors to arbitrary target values, and measurements that print measurement results on recording paper, display measurement results in two-dimensional form, and output measurement results to external storage media. The device is known. To explain further, a temperature sensor used, for example, in a continuous furnace for heat-treating parts is appropriately placed at a predetermined location within the furnace to detect the temperature in the measurement atmosphere within the furnace. In this type of continuous furnace, a heater (not shown) in the furnace is controlled according to a control pattern (for example, see Figure 3) with a predetermined repetition period based on measurement data from temperature sensors placed at various locations. ing.

By the way, standards regarding heat treatment (for example, the aviation parts industry: AMS2750E, the automobile parts industry: IATF16949/CQI-9) specify the calibration of temperature sensors (for example, thermocouples).

Therefore, when using the temperature sensor, it is necessary to calibrate the temperature sensor in accordance with the above-mentioned standards regarding heat treatment.

Japanese Patent Application Publication No. 2005-157651

However, conventionally, a field worker manually inputs and sets the instrument error of the temperature at a predetermined number (for example, 5 points) of the calibration points of the temperature sensor 12 described in the test report shown in FIG. 10, for example. Ta. For this reason, there are problems in that setting requires time and effort, which places a burden on field workers, and also involves the risk of input errors.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is an object of the present invention to provide a data recording device that can set calibration data more efficiently than before.

In order to achieve the above object, the data recording device according to claim 1 of the present invention includes a plurality of channels in which sensors for detecting physical quantities in a measurement atmosphere can be selectively attached and detached;
a data image reading unit that optically reads , for each sensor connected to the channel, a data image including information specifying the sensor connected to the channel and calibration data of the sensor;
Sensor information obtained for each sensor connected to the channel by associating calibration data of a data image of the sensor connected to the channel optically read by the data image reading unit with information identifying the sensor. an automatic acquisition section;
a measurement data correction unit that corrects, for each sensor connected to the channel, the measurement data of the corresponding sensor with calibration data linked to information identifying the sensor ;
The calibration data of the data image of the sensor connected to the channel, the measured value of the sensor connected to the channel, and the measured value corrected by the calibration data for each sensor connected to the channel are and a display section that displays a list on a setting screen in association with each sensor connected to the sensor .

The data recording device according to claim 2 of the present invention is the data recording device according to claim 1, which includes:
The sensor is characterized in that it is a temperature sensor that detects the temperature in the measurement atmosphere that is repeatedly controlled according to a predetermined control pattern .

The data recording device according to claim 3 of the present invention is such that the data recording device according to claim 1 or 2 is connected between one recorder or a plurality of recorders and the plurality of recorders. The recorder sets the calibration data and corrects the measurement data of each sensor connected to the channel based on the calibration data.

According to the present invention, input errors made by conventional field workers can be significantly reduced, work time can be shortened, and calibration data can be set efficiently without much effort.

1 is a diagram showing a schematic configuration of a data recording device according to the present invention. FIG. 3 is a diagram showing a state in which a temperature sensor is connected to a channel of the data recording device according to the present invention. It is a figure showing an example of the control pattern of the temperature in the measurement atmosphere in the furnace of a continuous furnace. It is a figure which shows an example of the registration screen of sensor information by an external terminal device. FIG. 3 is a diagram showing an example of a sensor information registration screen by the data recording device according to the present invention. It is a figure which shows an example of the setting screen of the sensor purchase alert by the data recording device based on this invention. It is a figure which shows an example of the setting screen of the exchange determination conditions by the data recording device based on this invention. 3 is a flowchart showing a work procedure using the data recording device according to the present invention. It is a figure showing other forms of the data recording device concerning the present invention. It is a figure showing an example of a test report. It is a figure which shows an example of the setting screen of the calibration data of a temperature sensor.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the attached drawings.

The data recording device according to the present invention is composed of any measurement-related equipment such as a recorder, a controller, a data logger, a controller, etc., and records measurement data from various sensors that detect physical quantities in the measurement atmosphere. In addition to the recording device, it also includes a device that uses the recorded measurement data to control external equipment.

In this embodiment, as one form of the data recording device, the data recording device 1 is configured with one recorder 1A that records measurement results based on measurement data of a sensor that detects a physical quantity of the measurement atmosphere. Let me explain using an example.

The recorder 1A includes a data image reading section 2, an automatic sensor information acquisition section 3, a setting registration section 4, a measurement data acquisition section 5, a storage section 6, an alarm section 7, a display section 8, and a control section 9.

In this embodiment, the sensor that detects the physical quantity in the measurement atmosphere is appropriately placed at a predetermined location in the continuous furnace 11 that heat-treats parts, as shown in FIG. 2, and measures the temperature in the measurement atmosphere. It consists of a temperature sensor 12 for detection. The temperature sensor 12 is composed of, for example, a thermocouple, a resistance temperature detector, a thermistor, a semiconductor, etc., and is selectively connected to a plurality of channels CH1, CH2, ..., CHn provided in the main body of the recorder 1A as the data recording device 1. It is removable and replaceable.

When heat treating the same part, the temperature in the measurement atmosphere inside the continuous furnace 11 is determined based on the measurement data of the temperature sensor 12, for example, in a control pattern with a predetermined repetition period as shown in FIG. A heater (not shown) is controlled. In the control pattern of FIG. 3, the measurement data of the temperature sensor 12 is set so that the temperature in the measurement atmosphere in the furnace becomes t1 → t2 → t3 → t4 → t1 during each period of time T with time T as a repeating period. The heater is PID controlled by turning on/off based on the above. That is, in the heat treatment of parts in the continuous furnace 11, the heater is controlled so that the temperature in the measurement atmosphere in the furnace is raised stepwise, and then heated to a predetermined temperature and then lowered.

The data image reading unit 2 contains information (for example, the manufacturing number (serial number) of the temperature sensor 12) that specifies the temperature sensor 12 used by selectively connecting to the plurality of channels CH1, CH2, ..., CHn of the recorder 1A. etc.) and the calibration data of the temperature sensor 12 is optically read.

FIG. 10 shows an example of a test report as a data image. The test report in FIG. 10 includes information that specifies the temperature sensor 12 (test number, sensor equipment number (corresponding to sensor identification information similar to the serial number)) and temperature sensors at a predetermined number of calibration points of the temperature sensor 12. Differences are included as data images, and product combination test results according to the user's request are described. The test report in FIG. 10 describes the test results of the temperature sensor 12 connected to channels CH1, CH2, and CH3 of the recorder 1A. Specifically, the instrumental error at each temperature of the temperature sensor 12 (test number: XYZ-150, sensor device number: ABC-001) connected to input channel 1 (CH1) (-50°C → instrumental error: -0 .5°C, -20°C → Instrumental error: -0.3°C, 0°C, 5°C, 30°C → Instrumental error: -0.2°C) are listed as test results. In addition, the instrumental error at each temperature of the temperature sensor 12 (test number: XYZ-151, sensor equipment number: ABC-002) connected to input channel 2 (CH2) (-50°C→instrumental error: -0.2°C) , -20℃→instrument error: -0.4℃, 0℃→instrument error: -0.3℃, 5℃→instrument error: -0.1℃, 30℃→instrument error: -0.3℃) are listed as the test results. Furthermore, the instrumental error at each temperature of the temperature sensor 12 (test number: XYZ-152, sensor equipment number: ABC-003) connected to input channel 3 (CH3) (-50°C → instrumental error: -0.4°C) , -20℃→instrument error: -0.2℃, 0℃→instrument error: -0.3℃, 5℃→instrument error: -0.5℃, 30℃→instrument error: -0.4℃) are listed as the test results.

The method of optically reading the data image with the data image reading unit 2 is to record the test number, input channel, sensor device number, and test result (calibration data) of the temperature sensor 12 written in the test report in Figure 10. How to capture and read images with a camera connected to total 1A, and record the contents of the test report in Figure 10 (including the test number of temperature sensor 12, input CH, sensor device number, and test results (calibration data)) A method of scanning with a scanner device connected to total 1A and reading the test number, input CH, sensor device number, and test result (calibration data) of the temperature sensor 12 from the scanned image by character recognition, and the test report shown in Figure 10. A method of capturing the test number, input channel, sensor device number, and test result (calibration data) of the temperature sensor 12 described in, for example, with a camera attached to a smartphone and transferring it to the recorder 1A, the test report shown in FIG. A QR code (registered trademark) encoded with the written contents (including the test number of the temperature sensor 12, input channel, sensor device number, and test results (calibration data)) is printed or pasted on the test report in advance. For example, there is a method of reading a QR code (registered trademark) with a barcode reader, which is an application tool of a smartphone, and transmitting it to the recorder 1A.

The calibration data of the data image optically read by the data image reading unit 2 is stored in the sensor information acquired by the sensor information automatic acquisition unit 3 or the setting registration unit 4 through the serial number (sensor device number) of the temperature sensor 12. The sensor information is set in association with the sensor information that is set and registered, and is stored in the sensor information storage section 6a, which will be described later.

The sensor information automatic acquisition unit 3 receives sensor information of the temperature sensor 12 selectively connected to channels CH1, CH2, . . . , CHn of the recorder 1A from an external terminal device and automatically acquires the sensor information. At this time, the sensor information of the temperature sensor 12 can be input from a registration screen of an external terminal device such as a smartphone or a personal computer.

The sensor information of the temperature sensor 12 includes sensor specific information and a channel number. The sensor identification information is unique information that is given to each temperature sensor 12 to identify the temperature sensor 12, and is, for example, the manufacturing number (serial number) of a label affixed to the main body of the temperature sensor 12. Further, the channel number is a number that specifies the channel of the recorder 1A to which the temperature sensor 12 is connected.

FIG. 4 shows an example of the registration screen 21 of an external terminal device. The registration screen 21 in FIG. 4 is displayed on the display screen by starting an application on an external terminal device (for example, a smartphone), and includes an input box 21a for directly inputting the serial number of the temperature sensor 12, and a terminal. A scan button 21b for reading the serial number or QR code (registered trademark) (or barcode) of the temperature sensor 12 by activating a camera attached to or connected to the device, and a channel of the recorder 1A to which the temperature sensor 12 is connected. , an input box 21d for inputting a condition number of a replacement judgment condition to be described later, and a registration button 21e for transferring and registering sensor information of the temperature sensor 12 to the recorder 1A. Is displayed.

On the registration screen 21 in FIG. 4, the user can either directly input the serial number of the temperature sensor 12 into the input box 21a, or activate the camera and operate the scan button 21b to read the serial number of the temperature sensor 12 through character recognition. , scan the QR code (registered trademark) (or barcode) to obtain information on the serial number of the temperature sensor 12. Then, after inputting the channel number of the recorder 1A in the input box 21c and inputting the condition number of the exchange judgment condition in the input box 21d, when the registration button 21e is pressed, the sensor information of the temperature sensor 12 is automatically recorded. It becomes possible to transfer to a total of 1A.

In order to prevent human input errors, the serial number of the temperature sensor 12 can be read by character recognition by operating the scan button 21b with the camera activated, or by reading the serial number of the temperature sensor 12 by character recognition. Preferably, a QR code (registered trademark) (or barcode) containing number information is read by scanning.

In addition, the serial number of the temperature sensor 12 can be obtained by connecting a camera to the recorder 1A and reading the serial number by operating a predetermined button, or by scanning a QR code (registered trademark) (or barcode). You can also do that. Further, the temperature sensor 12 stores its own serial number information, and when the temperature sensor 12 is connected to the channel of the recorder 1A, the sensor information automatic acquisition unit 3 receives the serial number information from the temperature sensor 12. The configuration may be such that the information is acquired.

The settings registration unit 4 registers sensor information, sets sensor purchase alerts, and sets exchange determination conditions on the registration screen and settings screen displayed on the display unit 8.

FIG. 5 shows an example of the sensor information registration screen 31. The registration screen 31 in FIG. 5 includes a registration display area 31A for registering sensor information of the temperature sensor 12, and a list display area 31B for displaying a list of sensor information of the already registered temperature sensors 12.

The registration display area 31A includes an input box 31a for inputting the serial number of the temperature sensor 12, an input box 31b for inputting the condition number of the replacement judgment condition, and a channel of the recorder 1A to which the temperature sensor 12 is connected. An input box 31c for inputting a number and an input box 31d for inputting the start date and time of use of the temperature sensor 12 are displayed. Note that the use start date and time is the date and time when the temperature sensor 12 connects to the channel of the recorder 1A and starts using it.

In the list display area 31B, sensor information (manufacturing number, condition number of replacement judgment condition, channel number, start date and time of use) of the already registered temperature sensor 12 is displayed. The list is displayed in the order of registration starting from 1. On the right side of each sensor information displayed in a list, a reset button "RST" and a delete button "DEL" are displayed side by side. When the reset button "RST" is pressed, the use start date and time of the sensor information in that row is updated to the date and time when the reset was executed. When the delete button "DEL" is pressed, the sensor information in that row is cleared and becomes blank. In addition, cleared No. If there is past sensor information lower down, the blank No. Top up.

In the registration display area 31A of the registration screen 31 in FIG. 5, the user enters, for example, the serial number "BBBB", the condition number "2" of the exchange judgment condition, the channel number "5", and the start date and time of use "19/ 06/12" and presses the registration button "SET", the input sensor information is registered.

FIG. 6 shows an example of the sensor purchase alert setting screen 41. The setting screen 41 in FIG. 6 includes a setting box 41a for turning on/off a sensor purchase alert in order to encourage periodic replacement of the temperature sensor 12 (for example, replacement due to deterioration of the precious metal of the thermocouple); An input box 41b for inputting the replacement cycle (days) of the temperature sensor 12 and an input box 41c for inputting the sensor delivery date (days) are displayed.

On the setting screen 41 of FIG. 6, for example, as shown in the figure, the user sets the sensor purchase alert setting box 41a to "ON", sets the replacement period (days) in the input box 41b to "90", and sets the input box 41c to "90". When "20" is entered in the sensor delivery date (days), sensor purchase alert information is set.

FIG. 7 shows an example of the exchange determination condition setting screen 51. The setting screen 51 in FIG. 7 displays an input box 51a for selecting a condition number for setting exchange determination conditions. On the illustrated setting screen 51, eight patterns of replacement determination conditions can be selected and set using a pull-down menu.

The setting screen 51 in FIG. 7 includes an input box 51b for inputting a starting temperature at which measurement of the deterioration time of the temperature sensor 12 is started, and an end temperature at which measurement of the deterioration time of the temperature sensor 12 ends, as a determination based on cumulative time. An input box 51c for inputting (a temperature lower than the starting temperature) and an input box 51d for inputting a deterioration determination time for determining that the temperature sensor 12 has deteriorated are displayed.

The setting screen 51 in FIG. 7 includes an input box 51e for inputting a starting temperature at which to start measuring the number of deteriorations of the temperature sensor 12, and an end temperature at which to end measuring the number of deteriorations of the temperature sensor 12, as a determination based on the number of cycles. An input box 51f for inputting (temperature lower than the starting temperature) and an input box 51g for inputting the number of deterioration determinations for determining that the temperature sensor 12 has deteriorated are displayed.

The setting screen 51 in FIG. 7 displays an input box 51h for inputting the number of deterioration determinations for determining that the temperature sensor 12 has deteriorated, as a determination based on the period of use.

On the setting screen 51 of FIG. 7, the user selects "1" from the pull-down menu of the condition number input box 51a as shown in the figure, and sets "10" to the starting temperature of the input box 51b as a judgment based on cumulative time. , if you enter "0" for the end temperature in the input box 51c and "0.1 (=6 minutes)" for the deterioration judgment time in the input box 51d, the judgment based on the cumulative time of condition number 1 is set as the replacement judgment condition. .

The replacement determination conditions are conditions based on information that affects the lifespan of the temperature sensor 12. Specifically, the number of days of the replacement cycle from the date the temperature sensor 12 starts to be used, the number of days from the replacement date and time of the temperature sensor 12 to the sensor delivery date, and the start set temperature (start set value) at which the measurement of the deterioration time of the temperature sensor 12 is started. ) to the end set temperature (end set value) at which the measurement of the deterioration time ends, the deterioration judgment time (cumulative usage time) of the temperature sensor 12, and the start set temperature (start These include the number of times the temperature sensor 12 is judged for deterioration (the number of times it is used) from the set value (set value) to the end set temperature (end set value) at which the measurement of the number of times of deterioration ends, and the number of days that the temperature sensor 12 is judged for deterioration (the number of days that it is used).

Here, in the replacement judgment conditions, the deterioration judgment time (cumulative usage time) and the deterioration judgment count (number of uses) are the starting set temperature and ending set temperature, assuming that the control of the heater in the furnace is stopped due to some kind of malfunction. is set. For example, when controlling the temperature inside a continuous furnace by controlling the heater with the control pattern shown in Fig. 3, the replacement judgment conditions are that the starting set temperature of the deterioration judgment time (or the number of deterioration judgments) is t2, and the end set temperature is t1. , and if the heater control according to the control pattern stops due to a malfunction and the temperature of the temperature sensor 12 drops before the temperature of the temperature sensor 12 reaches t2, the deterioration judgment time (or the number of deterioration judgments) at that time will be It is no longer counted.

Note that the exchange determination conditions are not limited to those set on the setting screen 51 described above, and may be set on the setting screen of an external terminal device, for example, and the set contents may be transferred to the recorder 1A.

Further, on the setting screen 51 in FIG. 7, it is possible to selectively set any one of the cumulative time determination, the cycle number determination, and the usage period determination as the replacement determination condition, but the present invention is not limited thereto. For example, at least one of the determination based on cumulative time, the number of cycles, and the period of use may be displayed on the setting screen and set.

The measurement data acquisition unit 5 acquires measurement data from the temperature sensors 12 selectively connected to the plurality of channels CH1, CH2, . . . , CHn.

The storage unit 6 stores various information related to the management of the temperature sensor 12 including determining when to replace the temperature sensor 12, setting information, and measurement results of the temperature sensor 12 (based on measurement data and calibration data acquired by the measurement data acquisition unit 5). The sensor information storage section 6a, the determination condition storage section 6b, and the measurement result storage section 6c are used to store the calibrated measurement results) and the like.

The sensor information storage unit 6a stores the calibration data of the data image read by the data image reading unit 2 and the sensor information automatically acquired by the sensor information automatic acquisition unit 3 (the serial number, channel number, and replacement determination condition of the temperature sensor 12). number) or sensor information set in the setting registration unit 4 (manufacturing number of temperature sensor 12, channel number, calibration data, condition number of replacement determination condition, date and time of start of use) and are stored in association with each other.

Note that when storing the sensor information automatically acquired by the automatic sensor information acquisition unit 3 in the sensor information storage unit 6a, the date and time when the sensor information was acquired is used for the sensor information automatically acquired by the automatic sensor information acquisition unit 3. It is stored in the sensor information storage unit 6a in association with the start date and time.

The exchange judgment condition storage unit 6b stores exchange judgment conditions assigned with condition numbers in association with the sensor information automatically acquired by the automatic sensor information acquisition unit 3 or the sensor information set in the setting registration unit 4. do.

The measurement result storage unit 6c stores measurement data based on the detection results of the temperature sensors 12 selectively connected to a plurality of channels CH1, CH2,..., CHn, and calibrated measurements obtained by correcting the measurement data with calibration data. The results and usage times are stored for each temperature sensor 12 connected to channels CH1, CH2, . . . , CHn.

The alarm unit 7 outputs an alarm (an alarm prompting replacement of the temperature sensor 12 by display, sound, etc.) under the control of the control unit 9 when the determination unit 9a determines that the replacement determination condition is satisfied. Specifically, when the replacement judgment conditions are met, messages such as "Sensor deterioration judgment value has been reached. Please check the sensor information screen." and "Sensor replacement date has arrived. Replace the sensor. A message prompting the replacement of the temperature sensor 12 such as "Please order the sensor" or "It is time to purchase the sensor. Please order the sensor" is displayed on the display screen of the display unit 8 according to the contents of the replacement judgment condition. .

The display unit 8 is comprised of a display device, such as a liquid crystal display, provided in the recorder 1A. Under the control of the control unit 9, the display unit 8 displays a registration screen related to determining when to replace the temperature sensor 12 (sensor information registration screen 31 in FIG. 5), a setting screen (sensor purchase alert setting screen 41 in FIG. 6, A replacement determination condition setting screen 51 in FIG. 7, a calibration data setting screen 61 in FIG. 11), a measurement result of the temperature sensor 12, an alarm message urging replacement of the temperature sensor 12, etc. are displayed.

The control unit 9 is composed of a storage element such as a central processing unit (CPU), ROM, and RAM, and includes correction and recording of measurement data based on the detection results of the temperature sensor 12 and determination of when to replace the temperature sensor 12. In order to manage the temperature sensor 12, it centrally controls the data image reading section 2, sensor information automatic acquisition section 3, setting registration section 4, measurement data acquisition section 5, storage section 6, alarm section 7, and display section 8. ing.

In managing the replacement timing of the temperature sensor 12, the control unit 9 uses the measurement data (preferably calibrated measurement results) and usage time of each temperature sensor 12 stored in the measurement result storage unit 6c as corresponding sensor information. It has a determination unit 9a that determines whether or not the replacement determination condition is satisfied. The control unit 9 controls the alarm unit 7 to output an alarm when the determination unit 9a determines that the replacement determination condition is satisfied.

The control unit 9 transfers the measurement data of the temperature sensor 12 of each channel CH1, CH2, ..., CHn acquired by the measurement data acquisition unit 5 to each channel CH1, CH2 stored in the sensor information storage unit 6a of the storage unit 6. , . . . , CHn includes a measurement data correction section 9b that corrects the sensor information based on the associated calibration data corresponding to the sensor information of the temperature sensor 12.

Note that the instrumental error between the calibration data stored in the sensor information storage section 6a is calculated by linear approximation when the measurement data correction section 9b corrects the measurement data using the calibration data.

Next, a method of calibrating the temperature sensor 12 using the recorder 1A configured as described above will be described. The temperature sensor 12 is calibrated before the temperature sensor 12 is used for the first time, and at intervals based on standards regarding heat treatment (for example, CQI-9).

When calibrating the temperature sensor 12, calibration data for the temperature sensor 12 used by being connected to predetermined channels CH1, CH2, . . . , CHn is set. This calibration data setting is performed by optically reading a data image containing information specifying the temperature sensor 12 and calibration data of the temperature sensor 12 written in the test report shown in FIG. This is done by

FIG. 11 shows an example of a calibration data setting screen 61 that is set based on a data image optically read by the data image reading section 2. On the calibration data setting screen 61 in FIG. 11, the test results for the temperature sensor 12 of the test report in FIG. The difference is set as calibration data. According to the settings on the calibration data setting screen 61, regarding the measurement data of channel CH1 acquired by the measurement data acquisition section 5, the measured value: -50°C is corrected by the instrumental error: -0.5°C, and the true value is : -49.5℃, measured value: -20℃ is corrected by instrumental error: -0.3℃, true value: -19.7℃, measured value: 0℃, instrumental error: -0.2 The true value is corrected by ℃ and becomes the true value: 0.2℃, and the measured value: 5℃ is corrected by the instrumental error: -0.2℃, and the true value is 5.2℃, and the measured value: 30℃ is the instrumental error. Corrected by -0.2°C, the true value becomes 30.2°C.

The temperature sensor 12 is connected to predetermined channels CH1, CH2, ..., CHn, and sensor information is acquired by the sensor information automatic acquisition section 3 from the calibration data of the data image optically read by the data image reading section 2. When the sensor information is set, it is set in association with this sensor information and is stored in the sensor information storage section 6a of the storage section 6.

When the measurement data acquisition unit 5 acquires the measurement data from the temperature sensors 12 connected to each channel CH1, CH2, ..., CHn, the measurement data correction unit 9b of the control unit 9 reads the sensor information storage unit of the storage unit 6. The measurement data is corrected for each channel CH1, CH2, .

Next, a working procedure for managing the replacement timing of the temperature sensor 12 in the recorder 1A configured as described above will be described with reference to the flowchart of FIG. 8.

For example, in order to detect the temperature in the measurement atmosphere inside the continuous furnace 11, temperature sensors 12 placed at various locations inside the furnace are attached to predetermined channels CH1, CH2, CH3,...CHn of the recorder 1A (ST1). .

Next, sensor information of the temperature sensor 12 attached to the channel of the recorder 1A is registered (ST2). Sensor information can be registered, for example, by the sensor information automatic acquisition unit 3 receiving and automatically acquiring sensor information transferred from an external terminal device, or by setting the sensor information registration screen 31 of FIG. 5 by the setting registration unit 4. Do it with

Note that the registration of sensor information is performed at the timing of switching the channel to which the temperature sensor 12 is connected, replacing the temperature sensor 12, and reinstalling the temperature sensor 12.

Next, conditions for determining whether to replace the temperature sensor 12 are set (ST3). Setting of the replacement determination condition for the temperature sensor 12 is performed in the setting registration section 4 on the sensor purchase alert setting screen 41 in FIG. 6 or the replacement determination condition setting screen 51 in FIG.

After the above-described registration of the sensor information of the temperature sensor 12 and setting of replacement determination conditions are completed, the use of the temperature sensor 12 is started (ST4).

When the use of the temperature sensor 12 is started, the measurement data acquisition unit 5 acquires measurement data from the temperature sensor 12 connected to the channel of the recorder 1A, and the measurement data of the acquired temperature sensor 12 is transmitted to the measurement data correction unit. 9b performs correction using the corresponding calibration data. Then, the corrected measurement data and usage time are recorded (ST5), and the measurement data and usage time at this time are stored in the measurement result storage section 6c of the storage section 6 as a measurement result.

Next, the determination unit 9a of the control unit 9 determines whether the measurement data and usage time of each temperature sensor 12 stored in the measurement result storage unit 6c satisfy the exchange determination condition for the corresponding sensor information ( ST6).

Then, when the determination unit 9a determines that the replacement determination condition is satisfied, the control unit 9 controls the alarm unit 7 to output an alarm (for example, displaying a message urging replacement of the temperature sensor 12, etc.) (ST7). When the alarm is output, the user removes the relevant temperature sensor 12 and replaces it with a new temperature sensor 12.

In this way, according to the present embodiment, compared to the conventional manual setting by on-site workers, input errors can be significantly reduced, work time can be shortened, and calibration can be performed efficiently without any effort. Data settings can be made.

Furthermore, according to this embodiment, when setting calibration data, it is possible to eliminate the conventional method of omitting to count the number of times a sensor is used by a field worker, and it is possible to reduce the time and effort required for counting. There is no need to replace the sensor (in the case of management in the management department, it is replaced by the due date), and it becomes possible to automatically manage the sensor replacement timing with higher reliability. Moreover, it is possible to manage the sensor replacement timing with a simple configuration that does not require a current source or a switch means. Furthermore, by linking and storing sensor measurement results and sensor usage conditions (such as how many times the data was measured by the sensor used), it is possible to manage the replacement timing for each sensor.

Incidentally, in the above-described embodiment, the temperature sensor 12 that detects the temperature in the measurement atmosphere inside the continuous furnace 11 has been described as an example, but the present invention is not limited to this. For example, for other sensors such as humidity sensors, gas sensors, and pressure sensors, the same calibration data settings as for the temperature sensor 12 and the correction of measurement data based on the calibration data are performed, and the same replacement judgment conditions (use The number of days in the replacement cycle from the start date, the number of delivery days from the replacement date and time, the deterioration judgment time (cumulative usage time) from the start setting value that starts measurement of deterioration time to the end setting value that ends measurement of deterioration time, Replacement time is determined by a method using the number of deterioration judgments (number of uses), number of days for deterioration judgment (number of days of use), etc. from the start setting value that starts measuring the number of deterioration times to the end setting value that ends measuring the number of deterioration times. It is possible to manage.

In addition, in FIG. 1, the data recording device 1 is configured with one recorder 1A, but as shown in FIG. 9, communication is possible between multiple recorders 1A and a host computer or cloud 1B. , manages various registration information, setting information, and measurement data stored in the storage section 6 (sensor information storage section 6a, replacement judgment condition storage section 6b, measurement result storage section 6c) of each recorder 1A, and The data recording device 1 is configured to set the above-mentioned calibration data and correct the measurement data of the temperature sensor 12 based on the calibration data, as well as to determine whether or not the temperature sensor 12 should be replaced based on the replacement determination condition. Good too. As a result, the sensor information, replacement judgment conditions, and measurement results of the temperature sensors 12 connected to channels CH1, CH2, CH3, ..., CHn of each recorder 1A are managed collectively on the host computer or cloud 1B for each recorder 1A. be able to. As a result, it is compatible with sites where multiple recorders are installed, analyzes large amounts of data, and accurately determines the lifespan of sensors (temperature sensor 12, humidity sensor, gas sensor, etc.), and can also be used for automatic ordering. can be accommodated.

Although the best mode of the data recording device according to the present invention has been described above, the present invention is not limited to the description and drawings based on this mode. That is, it goes without saying that all other forms, embodiments, operational techniques, etc. made by those skilled in the art based on this form are included in the scope of the present invention.

1 Data recording device 1A Recorder 1B Host computer or cloud 2 Data image reading section 3 Sensor information automatic acquisition section 4 Setting registration section 5 Measurement data acquisition section 6 Storage section 6a Sensor information storage section 6b Replacement judgment condition storage section 6c Measurement result storage section Section 7 Alarm section 8 Display section 9 Control section 9a Judgment section 9b Measured data correction section 11 Continuous furnace 12 Temperature sensor 21 Registration screen for external terminal device 21a, 21c, 21d Input box 21b Scan button 21e Registration button 31 Registration of sensor information Screen 31A Registration display area 31B List display area 31a, 31b, 31c, 31d Input box 41 Sensor purchase alert setting screen 41a Setting box 41b, 41c Input box 51 Replacement judgment condition setting screen 51a, 51b, 51c, 51d, 51e, 51f, 51g, 51h Input box 61 Calibration data setting screen CH1, CH2, CH3,..., CHn Channel

Claims (3)

Multiple channels in which sensors that detect physical quantities in the measurement atmosphere can be selectively attached and detached,
a data image reading unit that optically reads , for each sensor connected to the channel, a data image including information specifying the sensor connected to the channel and calibration data of the sensor;
Sensor information obtained for each sensor connected to the channel by associating calibration data of a data image of the sensor connected to the channel optically read by the data image reading unit with information identifying the sensor. an automatic acquisition section;
a measurement data correction unit that corrects, for each sensor connected to the channel, the measurement data of the corresponding sensor with calibration data linked to information identifying the sensor ;
The calibration data of the data image of the sensor connected to the channel, the measured value of the sensor connected to the channel, and the measured value corrected by the calibration data for each sensor connected to the channel are 1. A data recording device comprising: a display unit that displays a list on a setting screen in association with each sensor connected to the data recording device. 2. The data recording device according to claim 1 , wherein the sensor is a temperature sensor that detects the temperature in the measurement atmosphere that is repeatedly controlled according to a predetermined control pattern. The data recording device according to claim 1 or 2 is configured of one recorder or a plurality of recorders and a host computer or a cloud capable of communicating with the plurality of recorders, A data recording device, characterized in that the controller sets the calibration data and corrects measurement data for each sensor connected to the channel based on the calibration data.

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