JP7365833B2 - sensor management system - Google Patents

Description

The present invention relates to a sensor management system that manages sensors that detect physical quantities 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.

For example, a temperature sensor used 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 with a predetermined repetition period (for example, see Figure 4) based on measurement data from temperature sensors placed at various locations. ing.

By the way, the maximum number of times a temperature sensor (eg, thermocouple) can be used is defined in standards regarding heat treatment (for example, AMS2750E for the aviation parts industry and IATF16949/CQI-9 for the automobile parts industry). Furthermore, the replacement conditions for temperature sensors may depend on the usage method, and there is a problem in that appropriate replacement cycles cannot be managed based only on operating time. Moreover, even when multiple temperature sensors are connected to one recorder, the replacement cycle of the temperature sensor changes depending on the usage conditions, making it difficult to accurately manage the replacement cycle compared to other parts. was there. For example, in a continuous furnace, the temperature varies depending on the position of the temperature sensor, so the replacement cycle varies for each temperature sensor.

For this reason, it is necessary to manage the replacement timing of the temperature sensors placed at various locations in the furnace. Conventionally, on-site workers regularly record historical information (for example, number of times used) of the temperature sensors, or It was managed by the quality control department based on reports from on-site workers. However, this method lacks reliability because there may be omissions (for example, omissions in counting the number of uses) in the history information of the temperature sensor by on-site workers. Furthermore, when the quality control department manages the temperature sensor, the temperature sensor is replaced by the due date, so even if the temperature sensor is still usable, there is a risk that it will be replaced sooner than necessary.

By the way, Patent Document 1 listed 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 thermoelectromotive force generated by the thermocouple, and measures the temperature from the thermoelectromotive force generated by the thermocouple, which is stored in a memory in advance. The resistance value corresponding to the measured temperature was calculated from the relationship between the measured temperature and the resistance value of the thermocouple, and the resistance value of the thermocouple was measured from the voltage drop when 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 using a processing means.

Japanese Patent Application Publication No. 8-313466

However, in the conventional thermocouple deterioration detection device disclosed in Patent Document 1 mentioned above, the relationship between thermoelectromotive force and temperature is stored for each type of thermocouple, and the switch means is turned on to transfer the 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, especially when thermocouples are connected to multiple channels, the switching means must be controlled for each channel. In addition, 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, so not only is the durability of the switch means in question; Depending on the timing of turning on the switch means, there is a risk of missing the time to replace the thermocouple, making it difficult to manage the time to replace the thermocouple with high reliability.

Therefore, the present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a sensor management system that can manage sensor replacement timing with higher reliability.

In order to achieve the above object, the sensor management system 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 sensor information automatic acquisition unit that automatically acquires, as sensor information, information that identifies the sensor, a date and time when the sensor starts to be used, and a channel number that identifies a channel to which the sensor is connected;
a sensor information storage unit that stores the sensor information acquired by the automatic sensor information acquisition unit ;
a replacement determination condition storage unit that stores replacement determination conditions based on information that affects the life of the sensor in association with the sensor information;
a measurement data acquisition unit that acquires measurement data from a sensor connected to the channel;
a measurement result storage unit that stores the measurement data and usage time acquired by the measurement data acquisition unit for each sensor connected to the channel;
a determination unit that determines whether the measurement data and usage time of the sensor satisfy a replacement determination condition stored in the replacement determination condition storage unit in association with sensor information of the sensor;
The apparatus is characterized by comprising an alarm section that outputs an alarm when the determination section determines that the replacement 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, which includes:
The exchange determination condition storage unit stores the exchange determination conditions with a condition number assigned thereto,
The determination unit determines whether the measurement data and usage time of the sensor satisfy a replacement determination condition of a condition number stored in the replacement determination condition storage unit in association with sensor information of the sensor. Features.

The sensor management system according to claim 3 of the present invention is the sensor management system according to claim 1 or 2, which includes:
comprising a settings registration unit for setting and registering the sensor information and the replacement determination condition ;
The sensor information whose settings are registered in the settings registration section is stored in the sensor information storage section .

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, which includes:
The replacement determination condition is characterized in that it is either the cumulative usage time of the sensor or the number of times the sensor is used .

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 , comprising:
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 sensor management system according to claim 6 of the present invention is such that the sensor management system according to any one of claims 1 to 5 includes one recorder that records measurement results based on measurement data of the sensor. It is characterized by
The sensor management system according to claim 7 of the present invention includes a sensor management system according to any one of claims 1 to 5 that includes a plurality of recorders and a host computer capable of communicating with the plurality of recorders. Alternatively, the sensor is configured of a cloud, and is characterized in that it determines whether or not the sensor should be replaced based on the replacement determination condition for each recorder.

According to the present invention, it has a simple configuration that does not require a current source or a switch means, eliminates the conventional failure to count the number of times a sensor is used by a worker at the site, and reduces the time and effort required for counting. It is possible to automatically manage the sensor replacement timing with higher reliability without having to replace it early.

1 is a diagram showing a schematic configuration of a sensor management system according to the present invention. FIG. 3 is a diagram showing a state in which temperature sensors are connected to channels of the sensor management system 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. It is a figure showing an example of the sensor information registration screen by the sensor management system concerning the present invention. It is a figure showing an example of the setting screen of the sensor purchase alert by the sensor management system concerning the present invention. It is a figure which shows an example of the setting screen of the replacement determination condition by the sensor management system based on this invention. 3 is a flowchart showing a work procedure using the sensor management system according to the present invention. It is a figure showing other forms of the sensor management system concerning the present invention.

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

As shown in FIG. 1, a sensor management system 1 according to the present embodiment manages the replacement timing of sensors that detect physical quantities in the measurement atmosphere, and includes one unit that records measurement results based on sensor measurement data. It is composed of a recorder 1A, and includes a sensor information automatic acquisition section 2, a setting registration section 3, a measurement data acquisition section 4, a storage section 5, an alarm section 6, a display section 7, and a control section 8.

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 selective to 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 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 sensor information automatic acquisition unit 2 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. Furthermore, 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 receives the serial number information from the temperature sensor 12. The configuration may be such that the information is acquired.

The settings registration unit 3 registers sensor information, sets sensor purchase alerts, and sets replacement determination conditions on a registration screen or a settings screen displayed on the display unit 7.

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

Note that it is preferable that the measurement data be corrected by setting a temperature deviation measured in advance as a correction value during calibration, and using this correction value.

The storage unit 5 stores various information related to the management of the temperature sensor 12, including determination of when to replace the temperature sensor 12, setting information, measurement results of the temperature sensor 12, etc. The storage unit 5 stores the sensor information storage unit 5a, determination condition storage, etc. It includes a section 5b and a measurement result storage section 5c.

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

Note that when storing the sensor information automatically acquired by the automatic sensor information acquisition unit 2 in the sensor information storage unit 5a, 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 2. It is stored in the sensor information storage unit 5a in association with the start date and time.

The exchange judgment condition storage unit 5b stores the exchange judgment conditions assigned with condition numbers in association with the sensor information automatically acquired by the sensor information automatic acquisition unit 2 or the sensor information set in the setting registration unit 3. do.

The measurement result storage unit 5c stores measurement data and usage times 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 is stored for each connected temperature sensor 12.

The alarm unit 6 outputs an alarm (an alarm prompting replacement of the temperature sensor 12 by display, sound, etc.) under the control of the control unit 8 when the determination unit 8a 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's 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 constituted by a display device, such as a liquid crystal display, provided in the recorder 1A. Under the control of the control unit 8, the display unit 7 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 setting screen 51 for the replacement determination conditions shown in FIG. 7), the measurement results of the temperature sensor 12, a warning message urging replacement of the temperature sensor 12, etc. are displayed.

The control unit 8 includes a storage element such as a central processing unit (CPU), ROM, and RAM, and records measurement data based on the detection results of the temperature sensor 12 and determines when to replace the temperature sensor 12. 12, the sensor information automatic acquisition section 2, setting registration section 3, measurement data acquisition section 4, storage section 5, alarm section 6, and display section 7 are collectively controlled.

In managing the replacement timing of the temperature sensor 12, the control unit 8 determines whether the measurement data and usage time of each temperature sensor 12 stored in the measurement result storage unit 5c satisfy the replacement determination condition of the corresponding sensor information. It has a determination unit 8a that determines. The control unit 8 controls the alarm unit 6 to output an alarm when the determination unit 8a determines that the replacement determination condition is satisfied.

Next, a working procedure for managing the replacement timing of the temperature sensor 12 in the sensor management system 1 (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 2 receiving and automatically acquiring sensor information transferred from an external terminal device, or by the setting registration unit 3 setting on the sensor information registration screen 31 of FIG. 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 3 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 4 acquires measurement data from the temperature sensor 12 connected to the channel of the recorder 1A, and records this measurement data and usage time (ST5). The measurement data and usage time at this time are stored in the measurement result storage section 5c of the storage section 5 as a measurement result.

Next, the determination unit 8a of the control unit 8 determines whether the measurement data and usage time of each temperature sensor 12 stored in the measurement result storage unit 5c satisfy the corresponding sensor information exchange determination condition ( ST6).

When the determination unit 8a determines that the replacement determination condition is satisfied, the control unit 8 controls the alarm unit 6 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.

As described above, according to the present embodiment, it is possible to eliminate the conventional failure to count the number of times a sensor is used by on-site workers, reduce the time and effort required for counting, and replace it earlier than necessary (instead of being replaced by the management department). (In the case of management of sensors, it is possible to automatically manage the replacement timing of sensors) with higher reliability. Furthermore, it is possible to manage the sensor replacement timing with a simple configuration that does not require the current source or switch means disclosed in Patent Document 1. 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.

By the way, in the embodiment described above, the temperature sensor 12 that detects the temperature in the measurement atmosphere inside the continuous furnace 11 is used as an example of the sensor to be managed, but the sensor is not limited to this. For example, regarding other sensors such as humidity sensors, gas sensors, and pressure sensors, the same replacement judgment conditions as for the temperature sensor 12 (number of days of replacement cycle from the date of first use, number of days due for delivery from the date and time of replacement, and measurement of deterioration time are started. The deterioration judgment time (cumulative usage time) from the start setting value to the end setting value at which the measurement of the deterioration time ends, and from the start setting value at which the measurement of the number of deterioration times begins to the end setting value at which the measurement of the number of deterioration times ends. It is possible to manage the replacement timing by a method using the number of times of deterioration determination (number of times of use), number of days of deterioration determination (number of days of use), etc.

In addition, in FIG. 1, the sensor management system 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 5 (sensor information storage section 5a, replacement judgment condition storage section 5b, measurement result storage section 5c) of each recorder 1A, and also records. The sensor management system 1 may be configured to determine whether or not the temperature sensor 12 should be replaced based on the replacement determination condition described above for every 1A in total. 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 sensor management system 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 Sensor management system 1A Recorder 1B Host computer or cloud 2 Sensor information automatic acquisition section 3 Setting registration section 4 Measurement data acquisition section 5 Storage section 5a Sensor information storage section 5b Replacement judgment condition storage section 5c Measurement result storage section 6 Alarm section 7 Display section 8 Control section 8a Judgment section 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)

Multiple channels in which sensors that detect physical quantities in the measurement atmosphere can be selectively attached and detached,
a sensor information automatic acquisition unit that automatically acquires, as sensor information, information that identifies the sensor, a date and time when the sensor starts to be used, and a channel number that identifies a channel to which the sensor is connected;
a sensor information storage unit that stores the sensor information acquired by the automatic sensor information acquisition unit ;
a replacement determination condition storage unit that stores replacement determination conditions based on information that affects the life of the sensor in association with the sensor information;
a measurement data acquisition unit that acquires measurement data from a sensor connected to the channel;
a measurement result storage unit that stores the measurement data and usage time acquired by the measurement data acquisition unit for each sensor connected to the channel;
a determination unit that determines whether the measurement data and usage time of the sensor satisfy a replacement determination condition stored in the replacement determination condition storage unit in association with sensor information of the sensor;
A sensor management system comprising: an alarm unit that outputs an alarm when the determination unit determines that the replacement determination condition is satisfied. The exchange determination condition storage unit stores the exchange determination conditions with a condition number assigned thereto,
The determination unit determines whether the measurement data and usage time of the sensor satisfy a replacement determination condition of a condition number stored in the replacement determination condition storage unit in association with sensor information of the sensor. The sensor management system according to claim 1. comprising a settings registration unit for setting and registering the sensor information and the replacement determination condition ;
3. The sensor management system according to claim 1 , wherein the sensor information whose setting is registered in the setting registration section is stored in the sensor information storage section . The sensor management system according to any one of claims 1 to 3 , wherein the replacement determination condition is one of the cumulative usage time of the sensor and the number of times the sensor has been used . 5. The sensor management system 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. 6. The sensor management system according to claim 1, wherein the sensor management system comprises one recorder that records measurement results based on measurement data of the sensor. The sensor management system according to any one of claims 1 to 5 comprises a plurality of recorders and a host computer or a cloud capable of communicating with the plurality of recorders, and the sensor management system includes a plurality of recorders and a host computer or a cloud capable of communicating with the plurality of recorders. A sensor management system that determines whether or not the sensor should be replaced based on a determination condition.

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