JP2021051052A - Sensor management system - Google Patents

Abstract

To manage sensor replacement timing with higher reliability.SOLUTION: A recording meter 1A, as a sensor management system 1, comprises: a sensor information storage unit 5a for storing, as sensor information, information for specifying a temperature sensor 12 that detects a physical quantity in a measurement atmosphere and the use start date/time of the temperature sensor 12; a replacement determination condition storage unit 5b for storing, in association with the sensor information, a replacement determination condition based on information that affects the life of the temperature sensor 12; a determination unit 8a for determining whether or not the measured data and use time of the temperature sensor 12 satisfies the replacement determination condition stored in association with the sensor information of the temperature sensor 12 in the replacement determination condition storage unit 5b; and an alarm unit 6 for outputting an alarm when the determination unit 8a determines that the replacement determination condition is satisfied.SELECTED DRAWING: Figure 1

Description

The present invention relates to a sensor management system that manages a sensor that detects a physical quantity in a measurement atmosphere.

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

For example, a temperature sensor used in a continuous furnace for heat-treating parts is appropriately arranged at a predetermined position in the furnace to detect the temperature in the measurement atmosphere in the furnace. In this type of continuous furnace, heaters (not shown) in the furnace are controlled by a control pattern (for example, see FIG. 4) having a predetermined repetition period based on the measurement data of temperature sensors arranged in various places. ing.

By the way, the standard regarding heat treatment (for example, aviation parts industry: AMS2750E, automobile parts industry: IATF16949 / CQI-9) defines the maximum number of times a temperature sensor (for example, a thermocouple) can be used. Further, the replacement condition of the temperature sensor may depend on the usage method, and there is a problem that an appropriate replacement cycle cannot be managed only by the operating time. Moreover, even when a plurality of temperature sensors are connected to one recorder, the replacement cycle of the temperature sensor changes depending on the usage conditions, so that it is difficult to manage the replacement cycle more accurately than other parts. was there. For example, in a continuous furnace, the temperature differs depending on the position where the temperature sensor is arranged, so that the replacement cycle changes for each temperature sensor.

For this reason, it is necessary to manage the replacement timing of the temperature sensors arranged in various places in the furnace. Conventionally, on-site workers regularly record the history information of the temperature sensors (for example, the number of times of use). It was managed by the quality control department based on reports from field workers. However, this method is unreliable because the history information of the temperature sensor by the on-site worker may be leaked (for example, the number of times of use may be missed). In addition, when the quality control department manages the temperature sensor, the temperature sensor is replaced on the due date, so that even a temperature sensor that can still be used may be replaced earlier than necessary.

By the way, Patent Document 1 below discloses a thermocouple deterioration detection device that detects deterioration of a thermocouple as a temperature sensor.

The thermocouple deterioration detection device of Patent Document 1 includes a current source that intermittently supplies a predetermined current to the thermocouple via a switch means, measures the temperature from the thermocouple generated by the thermocouple, and stores it in a memory in advance. The resistance value corresponding to the measured temperature was calculated from the relationship between the temperature and the resistance value of the thermocouple, and the resistance value of the thermocouple was measured and measured from the voltage drop when the current was supplied to the thermocouple from the current source. Deterioration of the thermocouple is detected by comparing the resistance value and the calculated resistance value by the processing means.

Japanese Unexamined Patent Publication No. 8-313466

However, in the conventional thermocouple deterioration detection device disclosed in Patent Document 1 described above, the relationship between the thermoelectromotive force and the temperature is stored for each type of thermocouple, and the switch means is turned on to thermocouple from the current source. Since the resistance value of the thermocouple is measured from the voltage drop when a predetermined current is intermittently supplied to the pair, the switching means is controlled for each channel, especially when the thermocouple is connected to a plurality of channels. Not only that, an input switch for switching each channel is also required, which complicates the configuration. Moreover, in order to detect the deterioration of the thermocouple, it is necessary to turn on the switch means and intermittently supply a predetermined current from the current source to the thermocouple. Therefore, not only the durability of the switch means is questioned, but also the durability of the switch means is questioned. Depending on the timing at which the switch means is turned on, the thermocouple replacement time may be overlooked, and it is difficult to manage the thermocouple replacement time with high reliability.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a sensor management system capable of managing the replacement time of a sensor with higher reliability.

In order to achieve the above object, the sensor management system according to claim 1 of the present invention stores information for identifying a sensor for detecting a physical quantity in a measurement atmosphere and sensor information for storing the start date and time of use of the sensor as sensor information. Memory part and
An exchange determination condition storage unit that stores exchange determination conditions based on information that affects the life of the sensor in association with the sensor information.
A determination unit that determines whether or not the measurement data of the sensor and the usage time satisfy the exchange determination condition stored in the exchange determination condition storage unit in association with the sensor information of the sensor.
The determination unit is provided with an alarm unit that outputs an alarm when it is determined that the exchange determination condition is satisfied.

The sensor management system according to claim 2 of the present invention is the sensor management system according to claim 1.
The exchange determination condition storage unit assigns a condition number to the exchange determination condition and stores it.
The determination unit determines whether or not the measurement data of the sensor and the usage time satisfy the exchange determination condition of the condition number stored in the exchange determination condition storage unit in association with the sensor information of the sensor. It is a feature.

The sensor management system according to claim 3 of the present invention is the sensor management system according to claim 1 or 2.
It is characterized by including a setting registration unit for setting and registering the sensor information and the exchange determination condition.

The sensor management system according to claim 4 of the present invention is the sensor management system according to any one of claims 1 to 3.
It is characterized by including a sensor information automatic acquisition unit that automatically acquires the sensor information.

The sensor management system according to claim 5 of the present invention is the sensor management system according to any one of claims 1 to 4.
The replacement determination condition is the cumulative usage time from the start set value for starting the measurement of the deterioration time of the sensor to the end set value for ending the measurement of the deterioration time, and the start of measuring the number of deteriorations of the sensor. It is characterized in that it is any one of the number of times of use from the set value to the end set value at which the measurement of the deterioration number is completed.

The sensor management system according to claim 6 of the present invention is the sensor management system according to any one of claims 1 to 5.
The sensor has multiple channels to which it can be attached and detached.
The sensor information storage unit is characterized in that the channel number of the channel to which the sensor is connected is stored as the sensor information together with the information for identifying the sensor and the start date and time of use.

The sensor management system according to claim 7 of the present invention is the sensor management system according to any one of claims 1 to 6.
The sensor is a temperature sensor that detects a temperature in the measurement atmosphere that is repeatedly controlled by a predetermined control pattern.

According to the present invention, a simple configuration that does not require a current source or a switching means is used, counting omissions such as the number of times the sensor is used by field workers as in the past can be eliminated, and the labor of counting can be reduced, which is more than necessary. It is possible to automatically manage the replacement time of the sensor with higher reliability without having to replace it early.

It is a figure which shows the schematic structure of the sensor management system which concerns on this invention. It is a figure which shows the state which the temperature sensor is connected to the channel of the sensor management system which concerns on this invention. It is a figure which shows an example of the temperature control pattern in the measurement atmosphere in the furnace of a continuous furnace. It is a figure which shows an example of the registration screen of the sensor information by an external terminal device. It is a figure which shows an example of the registration screen of the sensor information by the sensor management system which concerns on this invention. It is a figure which shows an example of the setting screen of the sensor purchase alert by the sensor management system which concerns on this invention. It is a figure which shows an example of the setting screen of the exchange determination condition by the sensor management system which concerns on this invention. It is a flowchart which shows the work procedure using the sensor management system which concerns on this invention. It is a figure which shows the other form of the sensor management system which concerns on this invention.

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

As shown in FIG. 1, the sensor management system 1 of the present embodiment manages the replacement time of the sensor that detects the physical quantity of the measurement atmosphere, and records the measurement result based on the measurement data of the sensor. It is composed of a recorder 1A, and includes a sensor information automatic acquisition unit 2, a setting registration unit 3, a measurement data acquisition unit 4, a storage unit 5, an alarm unit 6, a display unit 7, and a control unit 8.

In the present embodiment, as shown in FIG. 2, for example, the sensor for detecting the physical quantity in the measurement atmosphere is appropriately arranged at a predetermined position in the continuous furnace 11 for heat-treating the parts to measure the temperature in the measurement atmosphere. It is composed of a temperature sensor 12 for detecting. The temperature sensor 12 is composed of, for example, a thermocouple, a resistance temperature detector, a thermistor, a semiconductor, or the like, and is selectively selected for a plurality of channels CH1, CH2, ..., CHn provided in the main body of the recorder 1A as the sensor management system 1. It is removable and replaceable.

When heat-treating the same parts, the temperature in the measurement atmosphere of the continuous furnace 11 is based on the measurement data of the temperature sensor 12, for example, in the furnace with a control pattern according to a predetermined repetition cycle as shown in FIG. The 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 is t1 → t2 → t3 → t4 → t1 in each time T with the time T as the repetition cycle. The heater is PID controlled by turning on / off based on the above. That is, in the heat treatment of the parts by the continuous furnace 11, the heater is controlled so that the temperature in the measurement atmosphere in the furnace is gradually raised and then heated to a predetermined temperature to lower the temperature.

The sensor information automatic acquisition unit 2 automatically acquires the sensor information of the temperature sensor 12 selectively connected to the channels CH1, CH2, ..., CHn of the recorder 1A from an external terminal device. At that time, the sensor information of the temperature sensor 12 can be input from the 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 given to each temperature sensor 12 to identify the temperature sensor 12, and is, for example, a serial number of a label affixed to the main body of the temperature sensor 12. The channel number is a number that identifies 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 the external terminal device. The registration screen 21 of FIG. 4 is displayed on the display screen by activating an application of an external terminal device (for example, a smartphone), and is an input box 21a for directly inputting the serial number of the temperature sensor 12, and a terminal. A scan button 21b for operating a camera attached to or connected to the device to read the serial number or QR code (registered trademark) (or barcode) of the temperature sensor 12, and a channel of the recorder 1A to which the temperature sensor 12 is connected. The input box 21c for inputting the number of the above, the input box 21d for inputting the condition number of the exchange determination condition described later, and the registration button 21e for transferring and registering the sensor information of the temperature sensor 12 to the recorder 1A. Is displayed.

On the registration screen 21 of FIG. 4, the user directly inputs the serial number of the temperature sensor 12 into the input box 21a, or operates the camera and operates the scan button 21b to read the serial number of the temperature sensor 12 by character recognition. , QR code (registered trademark) (or bar code) is scanned to obtain information on the serial number of the temperature sensor 12. Then, when the channel number of the recorder 1A is input to the input box 21c, the condition number of the exchange determination condition is input to the input box 21d, and then the registration button 21e is pressed, the sensor information of the temperature sensor 12 is automatically recorded. It is possible to transfer to a total of 1A.

As for the serial number of the temperature sensor 12, in order to prevent human input error, the serial number of the temperature sensor 12 is read by character recognition by operating the scan button 21b while the camera is operated, or the temperature sensor 12 is manufactured. It is preferable to scan and read the QR code (registered trademark) (or barcode) containing the number information.

Further, for the serial number of the temperature sensor 12, the camera is connected to the recorder 1A and the serial number is read by a predetermined button operation or the QR code (registered trademark) (or bar code) is scanned to obtain the serial number. You can also do it. 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 2 acquires the serial number information from the temperature sensor 12. It may be a configuration to be acquired.

The setting registration unit 3 registers sensor information, sets a sensor purchase alert, and sets exchange determination conditions on the registration screen or setting screen displayed on the display unit 7.

FIG. 5 shows an example of the sensor information registration screen 31. The registration screen 31 of 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 temperature sensor 12 that has already been registered.

In the registration display area 31A, 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 determination 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. 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.

In the list display area 31B, the sensor information (serial number, condition number of replacement determination condition, channel number, use start date and time) of the temperature sensor 12 already registered is No. The list is displayed in the order of registration from 1. A reset button "RST" and a delete button "DEL" are displayed side by side on the right side of each sensor information displayed in the list. When the reset button "RST" is pressed, the use start date and time of the sensor information in that line is updated to the date and time when the reset is executed. When the delete button "DEL" is pressed, the sensor information in that line is cleared and becomes blank. In addition, the cleared No. If there is past sensor information below, the blank No. To top up.

In the registration display area 31A of the registration screen 31 of FIG. 5, for example, as shown in the figure, the user can use the serial number “BBBB”, the exchange determination condition condition number “2”, the channel number “5”, and the use start date and time “19 / When "06/12" is input and the registration button "SET" is pressed, the input sensor information is registered.

FIG. 6 shows an example of the sensor purchase alert setting screen 41. On the setting screen 41 of FIG. 6, in order to encourage periodical replacement of the temperature sensor 12 (for example, replacement due to deterioration of the precious metal of the thermocouple), a setting box 41a for switching ON / OFF of the sensor purchase alert, An input box 41b for inputting the replacement cycle (day) of the temperature sensor 12 and an input box 41c for inputting the sensor delivery date (day) 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 cycle (day) of the input box 41b to “90”, and sets the input box 41c to “90”. If you enter "20" in the sensor delivery date (day), the sensor purchase alert information will be set.

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

On the setting screen 51 of FIG. 7, the input box 51b for inputting the start temperature for starting the measurement of the deterioration time of the temperature sensor 12 and the end temperature for ending the measurement of the deterioration time of the temperature sensor 12 are displayed as a determination based on the cumulative time. An input box 51c for inputting (a temperature lower than the start temperature) and an input box 51d for inputting a deterioration determination time for determining that the temperature sensor 12 has deteriorated are displayed.

On the setting screen 51 of FIG. 7, the input box 51e for inputting the start temperature for starting the measurement of the deterioration number of the temperature sensor 12 and the end temperature for ending the measurement of the deterioration number of the temperature sensor 12 are displayed as a determination based on the number of cycles. An input box 51f for inputting (a temperature lower than the start temperature) and an input box 51g for inputting the number of times of deterioration determination for determining that the temperature sensor 12 has deteriorated are displayed.

On the setting screen 51 of FIG. 7, an input box 51h for inputting the number of deterioration determination times for determining that the temperature sensor 12 has deteriorated is displayed as a determination based on the usage period.

On the setting screen 51 of FIG. 7, for example, as shown in the drawing, the user selects “1” from the pull-down menu of the input box 51a of the condition number, and sets the start temperature of the input box 51b to “10” as a determination based on the cumulative time. When "0" is input to the end temperature of the input box 51c and "0.1 (= 6 minutes)" is input to the deterioration determination time of the input box 51d, the determination based on the cumulative time of the condition number 1 is set as the exchange determination condition. ..

The replacement determination condition is a condition based on information that affects the life of the temperature sensor 12. Specifically, the number of days of the replacement cycle from the start date of use of the temperature sensor 12, the number of days of the sensor delivery date from the replacement date and time of the temperature sensor 12, and the start set temperature (start set value) for starting the measurement of the deterioration time of the temperature sensor 12. ) To the end set temperature (end set value) to end the measurement of the deterioration time, the deterioration judgment time (cumulative use time) of the temperature sensor 12, and the start set temperature (start) to start measuring the number of deteriorations of the temperature sensor 12. There are the number of deterioration determination times (number of times of use) of the temperature sensor 12 and the number of days of deterioration determination (number of days of use) of the temperature sensor 12 from the set value) to the end set temperature (end set value) at which the measurement of the deterioration number is completed.

Here, in the replacement judgment conditions, the deterioration judgment time (cumulative usage time) and the deterioration judgment number (use count) are the start set temperature and the end set temperature assuming that the control of the heater in the furnace is stopped due to some trouble. Is set. For example, when the heater is controlled by the control pattern of FIG. 3 to control the temperature inside the continuous furnace, the start set temperature of the deterioration judgment time (or the number of deterioration judgments) is t2 and the end set temperature is t1 as replacement judgment conditions. If the temperature of the temperature sensor 12 drops before the temperature of the temperature sensor 12 reaches t2 and the control of the heater by the control pattern is stopped due to a malfunction, the deterioration determination time (or the number of deterioration determinations) at that time is set to. It is not counted.

The exchange determination condition is not limited to the setting from the setting screen 51 described above, and can be set, for example, on the setting screen of an external terminal device, and the set content can be transferred to the recorder 1A.

Further, on the setting screen 51 of FIG. 7, any one of the determination based on the cumulative time, the determination based on the number of cycles, and the determination based on the usage period can be selectively set as the exchange determination condition, but the determination is not limited to this. For example, at least one of the determination based on the cumulative time, the determination based on the number of cycles, and the determination based on the usage period may be displayed and set on the setting screen.

The measurement data acquisition unit 4 acquires measurement data from the temperature sensors 12 selectively connected to the plurality of channels CH1, CH2, ..., CHn.

In the measurement data, it is preferable to set the temperature deviation measured in the calibration in advance as a correction value and correct it with this correction value.

The storage unit 5 stores various information related to the management of the temperature sensor 12, including determination of the replacement time of the temperature sensor 12, setting information, measurement results of the temperature sensor 12, and the sensor information storage unit 5a, determination condition storage. A unit 5b and a measurement result storage unit 5c are provided.

The sensor information storage unit 5a is the sensor information (manufacturing number, channel number, replacement determination condition condition number of the temperature sensor 12) automatically acquired by the sensor information automatic acquisition unit 2 or the sensor information set by the setting registration unit 3 (the sensor information storage unit 5a). The serial number, channel number, condition number of replacement determination condition, use start date and time) of the temperature sensor 12 are stored.

When the sensor information automatically acquired by the sensor information automatic acquisition unit 2 is stored in the sensor information storage unit 5a, the date and time when the sensor information is acquired is used for the sensor information automatically acquired by the sensor information automatic acquisition unit 2. It is linked as the start date and time and stored in the sensor information storage unit 5a.

The exchange determination condition storage unit 5b stores the sensor information automatically acquired by the sensor information automatic acquisition unit 2 or the sensor information set by the setting registration unit 3 in association with the exchange determination condition to which the condition number is assigned. To do.

The measurement result storage unit 5c transfers the measurement data and the usage time based on the detection results of the temperature sensors 12 selectively connected to the plurality of channels CH1, CH2, ..., CHn to the channels CH1, CH2, ..., CHn. It stores each of the connected temperature sensors 12.

When the determination unit 8a determines that the replacement determination condition is satisfied, the alarm unit 6 outputs an alarm (an alarm prompting the replacement of the temperature sensor 12 by display, sound, etc.) under the control of the control unit 8. Specifically, when the replacement judgment conditions are met, "The sensor deterioration judgment value has been reached. Please check the sensor information screen.", "The sensor replacement deadline has come. Replace the sensor. A message prompting the user to replace the temperature sensor 12, such as "Please." Or "It is time to purchase the sensor. Please order the sensor." Is displayed on the display screen of the display unit 7 according to the content of the replacement judgment condition. ..

The display unit 7 is composed of a display such as a liquid crystal display provided in the recorder 1A. The display unit 7 has a registration screen (sensor information registration screen 31 in FIG. 5) and a setting screen (sensor purchase alert setting screen 41 in FIG. 6) related to determination of the replacement time of the temperature sensor 12 under the control of the control unit 8. The replacement determination condition setting screen 51) of FIG. 7, the measurement result of the temperature sensor 12, the alarm message prompting the replacement of the temperature sensor 12, and the like are displayed.

The control unit 8 is composed of storage elements such as a central processing device (CPU :), ROM, and RAM, and is a temperature sensor including recording measurement data based on the detection result of the temperature sensor 12 and determining the replacement time of the temperature sensor 12. In order to manage 12, each unit of the sensor information automatic acquisition unit 2, the setting registration unit 3, the measurement data acquisition unit 4, the storage unit 5, the alarm unit 6, and the display unit 7 is collectively controlled.

When the control unit 8 manages the replacement time of the temperature sensor 12, whether or not the measurement data and the usage time of each temperature sensor 12 stored in the measurement result storage unit 5c satisfy the exchange determination condition of the corresponding sensor information. It has a determination unit 8a for determining. The control unit 8 controls the alarm unit 6 so as to output an alarm when the determination unit 8a determines that the exchange determination condition is satisfied.

Next, a work procedure for managing the replacement time of the temperature sensor 12 by the sensor management system 1 (recorder 1A) configured as described above will be described with reference to the flowchart of FIG.

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

Next, the sensor information of the temperature sensor 12 attached to the channel of the recorder 1A is registered (ST2). For registration of sensor information, for example, the sensor information automatic acquisition unit 2 receives and automatically acquires the sensor information transferred from an external terminal device, or the setting registration unit 3 sets the sensor information on the registration screen 31 of FIG. Do it with.

The sensor information is registered at the timing of switching the channel connecting the temperature sensor 12, replacing the temperature sensor 12, and reattaching the temperature sensor 12.

Next, the replacement determination condition of the temperature sensor 12 is set (ST3). The replacement determination condition of the temperature sensor 12 is set by the setting registration unit 3 on the sensor purchase alert setting screen 41 of FIG. 6 and the replacement determination condition setting screen 51 of FIG. 7.

Then, when the registration of the sensor information of the temperature sensor 12 and the setting of the exchange determination condition 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 4 acquires the measurement data from the temperature sensor 12 connected to the channel of the recorder 1A, and records the measurement data and the usage time (ST5). The measurement data and the usage time at this time are stored in the measurement result storage unit 5c of the storage unit 5 as the measurement result.

Next, the determination unit 8a of the control unit 8 determines whether or not the measurement data and the usage time of each temperature sensor 12 stored in the measurement result storage unit 5c satisfy the exchange determination condition of the corresponding sensor information ( ST6).

Then, when the determination unit 8a determines that the exchange determination condition is satisfied, the control unit 8 controls the alarm unit 6 to output an alarm (for example, a message display prompting the replacement of the temperature sensor 12) (ST7). When the alarm is output, the user removes the corresponding temperature sensor 12 and replaces it with a new temperature sensor 12.

In this way, according to the present embodiment, it is possible to eliminate the omission of counting such as the number of times the sensor is used by the on-site worker as in the past, reduce the labor of counting, and replace the sensor earlier than necessary (in the management department). In the case of management, it is possible to automatically manage the replacement time of the sensor with higher reliability without having to replace it on the due date. Moreover, it is possible to manage the sensor replacement time with a simple configuration that does not require the current source or switching means disclosed in Patent Document 1. Further, by storing the measurement result of the sensor and the usage state of the sensor (data measured by the sensor used many times, etc.) in association with each other, it is possible to manage the replacement time for each sensor.

By the way, in the above-described embodiment, the temperature sensor 12 that detects the temperature in the measurement atmosphere in the continuous furnace 11 has been described as an example of the sensor to be managed, but the present invention is not limited to this. For example, for other sensors such as a humidity sensor, a gas sensor, and a pressure sensor, measurement of the same replacement determination conditions as the temperature sensor 12 (the number of days of the replacement cycle from the start date of use, the number of delivery days from the date and time of replacement, and the deterioration time is started. Deterioration judgment time (cumulative usage time) from the start setting value to the end setting value to end the measurement of the deterioration time, and the end setting value to end the measurement of the deterioration number from the start setting value to start the measurement of the number of deteriorations. It is possible to manage the replacement time by a method using the number of deterioration judgments (number of times of use), the number of days of deterioration judgment (number of days of use), etc.).

Further, in FIG. 1, one recorder 1A constitutes the sensor management system 1, but as shown in FIG. 9, it is possible to communicate between the plurality of recorders 1A and the host computer or the cloud 1B. , Various registration information, setting information information and measurement data stored in the storage unit 5 (sensor information storage unit 5a, exchange determination condition storage unit 5b, measurement result storage unit 5c) of each recorder 1A are managed, and the recorder. The sensor management system 1 may be configured so as to determine whether or not the temperature sensor 12 is replaced based on the above-mentioned replacement determination condition for each 1A. As a result, the sensor information, exchange determination conditions, and measurement results of the temperature sensors 12 connected to the channels CH1, CH2, CH3, ..., CHn of each recorder 1A are collectively managed by the host computer or the cloud 1B for each recorder 1A. be able to. As a result, it is possible to analyze a large amount of data and accurately determine the life of the sensor (temperature sensor 12, humidity sensor, gas sensor, etc.) in response to the site where multiple recorders are installed, and it is also possible to place an automatic order. Can be accommodated.

Although the best mode of the sensor management system according to the present invention has been described above, the present invention is not limited by the description and drawings in this form. That is, it goes without saying that all other forms, examples, operational techniques, and the like made by those skilled in the art based on this form are included in the category of the present invention.

1 Sensor management system 1A Recorder 1B Upper computer or cloud 2 Sensor information automatic acquisition unit 3 Setting registration unit 4 Measurement data acquisition unit 5 Storage unit 5a Sensor information storage unit 5b Exchange judgment condition storage unit 5c Measurement result storage unit 6 Alarm unit 7 Display 8 Control 8a Judgment 11 Continuous furnace 12 Temperature sensor 21 External terminal device registration screen 21a, 21c, 21d Input box 21b Scan button 21e Registration button 31 Sensor information registration 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 CH1, CH2 , CH3, ..., CHn channel

Claims (7)

A sensor information storage unit that stores information that identifies a sensor that detects physical quantities in the measurement atmosphere and the start date and time of use of the sensor as sensor information.
An exchange determination condition storage unit that stores exchange determination conditions based on information that affects the life of the sensor in association with the sensor information.
A determination unit that determines whether or not the measurement data of the sensor and the usage time satisfy the exchange determination condition stored in the exchange determination condition storage unit in association with the sensor information of the sensor.
A sensor management system including an alarm unit that outputs an alarm when the determination unit determines that the exchange determination condition is satisfied. The exchange determination condition storage unit assigns a condition number to the exchange determination condition and stores it.
The determination unit determines whether or not the measurement data of the sensor and the usage time satisfy the exchange determination condition of the condition number stored in the exchange determination condition storage unit in association with the sensor information of the sensor. The sensor management system according to claim 1. The sensor management system according to claim 1 or 2, further comprising a setting registration unit for setting and registering the sensor information and the exchange determination condition. The sensor management system according to any one of claims 1 to 3, further comprising an automatic sensor information acquisition unit that automatically acquires the sensor information. The replacement determination condition is the cumulative usage time from the start set value for starting the measurement of the deterioration time of the sensor to the end set value for ending the measurement of the deterioration time, and the start of measuring the number of deteriorations of the sensor. The sensor management system according to any one of claims 1 to 4, wherein the sensor management system is any one of the number of times of use from the set value to the end set value at which the measurement of the deterioration number is completed. The sensor has multiple channels to which it can be attached and detached.
The sensor information storage unit according to any one of claims 1 to 5, wherein the sensor information storage unit stores the channel number of the channel to which the sensor is connected as the sensor information together with the information for identifying the sensor and the start date and time of use. Described sensor management system. The sensor management system according to any one of claims 1 to 6, wherein the sensor is a temperature sensor that detects a temperature in the measurement atmosphere that is repeatedly controlled by a predetermined control pattern.

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