JPH11190665A - Temperature measuring device and temperature measuring method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a temperature measuring device and a temperature measuring method suitable for temperature control during cooking in order to prevent food poisoning. SOLUTION: A measuring unit 10 is provided with a sensor signal input part 28 that can receive a temperature measuring signal detected by a sensor unit 13, a measuring part 21 that can measure set temperature holding time, and an RAM 22 that can record data of holding time and detected temperature in addition to measuring time. When the specified temperature or higher is held for the fixed time, the temperature and time at that time are recorded in the RAM 22 so as to record whether temperature control is normally performed. Temperature control during cooking required to prevent food poisoning can be performed without manual help, and its history information can be stored.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a temperature measuring device and a temperature measuring method for measuring a temperature.

[0002]

2. Description of the Related Art In the field of food processing, food poisoning, which is poisoning caused by ingestion of food and drink containing toxic substances, is an important problem, and storage temperature and processing temperature of food are one of the important issues. Appropriate management of this is one of the major items of product management.

Conventionally, as a countermeasure against food poisoning, sterilization is conventionally performed by simply applying heat. However, recently, bacteria that cannot be completely killed by these methods, such as pathogenic Escherichia coli O-157, have become a problem. It has become. However, it has been found that these bacteria are also killed by maintaining a certain temperature or higher for a certain time (75 ° C., one minute).

In order to confirm that a certain temperature or more is maintained for a certain period of time using a conventional thermometer, it is general to measure the time with a stopwatch or the like and to record the result on a recording sheet. .

[0005]

In order to prevent food poisoning, it is desirable to perform such a measurement every time cooking is performed, but it is troublesome since it is necessary to measure time while watching a thermometer. Therefore, it is necessary to provide personnel dedicated to measurement. In addition, it is necessary to constantly monitor whether the temperature has dropped while measuring the time during which the temperature is maintained, and this is a task that uses the nerves that cannot be removed. For this reason, many small food processing factories and restaurants do not have the time or manpower to manage cooking temperatures, and they do not practice food poisoning even though it is known to be an effective means of preventing it. There are many.

Accordingly, an object of the present invention is to provide a temperature measuring device and a temperature measuring method capable of easily and reliably managing and recording a cooking temperature.
Further, it is an object of the present invention to provide a temperature measuring device and a temperature measuring method which can greatly reduce the trouble and time required for managing the cooking temperature or the temperature related thereto, and at the same time, greatly contribute to prevention of food poisoning.

[0007]

For this reason, in the present invention, when the detected temperature exceeds a specific temperature, the holding time is automatically measured, and when the temperature is held for a predetermined time, the time and the held time are measured. Alternatively, by recording the detected temperature, it can be confirmed that predetermined temperature management has been performed. In other words, the temperature measuring device of the present invention can measure the temperature of the object to be measured and the holding time during which the temperature detected by the temperature detecting unit is maintained at or above the first set temperature. A holding time measuring unit, and a recording unit capable of recording the holding time or the temperature detected at that time in addition to the time when the holding time reaches the first set time. The present invention is characterized in that an instruction device is provided which allows the user to instruct the start of the operation each time. The temperature measuring method according to the present invention further includes a temperature detecting step of detecting a temperature of the measurement object until the temperature reaches the first set temperature, and a holding time in which the detected temperature of the measurement object is held at the first set temperature or more. And a recording step of recording the holding time or the temperature detected at that time in addition to the time when the holding time reaches the first set time.

[0008] The temperature measuring device and the measuring method of the present invention include:
It can be easily used by anyone, and when the temperature is detected by a method such as directly contacting or inserting the temperature detecting section with the sample to be measured, the first temperature is set to the first set temperature or higher. It is automatically determined whether or not the set time was able to be maintained, and in addition to the time at which the determination was made, the retention time or temperature was automatically recorded to confirm that temperature management was performed normally. You can check. Therefore, it is not necessary for an operator to check whether or not a certain temperature or more is maintained for a certain time while watching both the thermometer and the stopwatch, and it is possible to maintain a certain temperature or more by using the temperature measuring device or method of the present invention. Temperature management, such as keeping time, can be performed automatically. In the temperature measuring device of the present invention, a device for instructing the start of the operation of the holding time measuring unit is provided in order to measure the samples one after another, so that the temperature control in cooking or the like can be efficiently and reliably performed. In addition, each time the measurement is completed, in addition to the time, the holding time or the temperature is recorded, so that the history of the temperature management using the temperature measuring device of the present invention can be confirmed, and the sample to be measured is specified later. It is possible to determine whether or not the temperature of the sample has been properly controlled from the measured data. As described above, by using the temperature measuring device and the temperature measuring method of the present invention, it is possible to reliably perform the temperature management without manual operation or time, and further, it is possible to store the management record. Further, the recorded data can be transferred to an information processing device such as a personal computer and analyzed or stored as a history.

In addition, the timing of the start of measurement, the timing of detection of the set temperature, or the measurement state during measurement can be visually or audibly grasped, so that the temperature control state can be accurately transmitted to the operator. Then, the worker can perform the work or other work with ease. For this purpose, in the present invention, an output unit capable of outputting a signal indicating the measurement state of the detected temperature is provided, and the output unit detects the first detected temperature.
And at least one of when the detected temperature reaches the first set temperature, when the detected temperature is equal to or higher than the first set temperature, and when the holding time reaches the first set time. It is desirable to be able to output sound, light, display or other signals. Further, the temperature measuring method of the present invention includes an output step capable of outputting a signal indicating a measurement state of the detected temperature. In this output step, while the detected temperature reaches the first set temperature, the detected temperature is reduced to the second set temperature. It is desirable that when the first set temperature is reached, the signal can be output at least one of when the holding time reaches the first set time while the detected temperature is equal to or higher than the first set temperature.

Further, the temperature measuring device is provided with a first abnormality recording section capable of recording the holding time in addition to the time at the time when the detected temperature falls below the first set temperature during the measurement of the holding time. It is desirable. At this time, the detected temperature at that time may be recorded instead of or in addition to the holding time. Further, if the detected temperature falls below the first set temperature during the measurement of the holding time, a temperature measurement method including a first abnormality recording step of recording the holding time or the detected temperature in addition to the time at that time is adopted. It is desirable. As a result, if there is a phenomenon in which the temperature drops below the first set temperature due to some abnormality during the temperature measurement, the abnormality can be accurately detected and recorded. Therefore, in addition to automatically performing the temperature management of maintaining the temperature equal to or higher than the predetermined temperature for the predetermined time or longer, it is possible to capture and record an abnormality during the temperature management. For this reason, the state in which the temperature control was not performed normally can be recorded, and it becomes clear that the sample was not properly heat-treated. Further, when such an abnormality occurs, it is also possible to output a signal indicating the abnormality from the output unit to make the operator confirm that the administrative abnormality has occurred.

Further, the temperature measuring device has an elapsed time measuring section capable of measuring an elapsed time from the start of the measurement until the detected temperature reaches the first set temperature, and an elapsed time measuring section for measuring the elapsed time when the elapsed time reaches the second set time. It is desirable to provide a second abnormality recording unit capable of recording the holding time or the detected temperature in addition to the time of the detected temperature. In addition, the elapsed time from the start of the measurement until the detected temperature reaches the first set temperature is measured, and the elapsed time is measured as the second time.
It is desirable to adopt a temperature measurement method including a second abnormality recording step of recording a holding time or a detected temperature in addition to a time during detection when the set temperature is reached. Thus, when the temperature does not reach the first set temperature due to some abnormality during the temperature measurement, the phenomenon can be accurately detected and recorded as described above. It is desirable that a signal indicating that there is an abnormality can be output from the output unit in the same manner as described above. Further, at that time, it is possible to easily sort the samples as defective.

Further, when the detected temperature becomes equal to or higher than the second set temperature during the measurement of the holding time, a third abnormality recording unit capable of recording the holding time or the detected temperature in addition to the time at that time. Is desirably provided. When the temperature during which the holding time is being measured becomes equal to or higher than the second set temperature, a temperature measurement method including a third abnormality recording step of recording the holding time or the detected temperature in addition to the time at that time may be adopted. desirable. As a result, when a phenomenon occurs in which the temperature becomes higher than the second set temperature due to some abnormality during the temperature measurement, it can be accurately detected and recorded, and the temperature management is performed more steadily as described above. be able to. By setting the second set temperature to a high dangerous temperature, it is possible to make use of work safety management. Also,
By setting the second set temperature higher than the first set temperature, a specified optimum temperature range can be set, so that the sample was processed according to the quality standard. You can check it.

[0013] Further, at the time of each abnormality, a visual or audible warning can be shown by using a sound, a display, or an output from a personal computer from the output unit, so that the temperature control status can be accurately transmitted to the operator. it can. Therefore, even if the worker does not concentrate on the temperature management, the state can be grasped by a signal such as a sound, so that the temperature management can be performed in parallel with other operations.

As described above, in the temperature measuring device and the temperature measuring method of the present invention, it is possible to easily and surely manage and record the temperature such as the cooking temperature of the sample. Labor and labor involved in the management of work can be greatly reduced. Therefore, the present invention can provide a temperature measuring device and a temperature measuring method which are very useful for preventing food poisoning.

[0015]

Embodiments of the present invention will be described below with reference to the drawings, and the present invention will be further described. FIG.
FIG. 1 shows an outline of a temperature measuring device according to the present invention. The temperature measuring device 11 of the present example includes a handy-type measuring unit 10
Sensor unit 13 connected to this by cable 12
It has. The measuring unit 10 of the present example has a detection temperature,
A display unit 5 using an LCD capable of displaying a time and a sample number and the like and switches 6 are arranged on the surface. As the switches 6, a power switch, a display switching switch, a record transfer switch, and the like are arranged.
Further, the measurement unit 10 is provided with two waterproof connectors 7 for input and output, and a sensor unit 13 is connected to one connector 7 a by a sensor cable 12. The sensor unit 13 is provided with a temperature sensor 16 at a rod-shaped tip whose periphery is protected by stainless steel.
Is provided, and a hand switch 14 having a shape that is easy to press and that is not erroneously pressed is provided on a grip portion thereof. The other connector 7b of the measuring unit 10 is a serial interface RS
-232C terminal, so that data can be transmitted / received to / from a personal computer 50 as an information processing device via a communication cable 51. In addition, other input / output devices such as a barcode reader can be connected to the connector 7b in place of the personal computer 50.
The setting of the measurement unit 10 can be performed from other than the personal computer 50, and the measurement data can be output.

Recently, in order to completely kill bacteria causing food poisoning, especially pathogenic Escherichia coli O-157, the temperature of 75 ° C.
It is known that performing the heat treatment for one minute is effective as described above. For example, when performing temperature control using the measurement unit 10 of this example, the sample 2 to be measured such as fried food is put into a cooking utensil 3 containing cooking oil 1 or the like, and heat 4 is added to cook. start. Then, the probe 15 of the sensor unit 13 of the measurement unit 10 of the present example is inserted into the center of the sample 2, and the switch 14 of the grip portion of the probe 15 is operated, so that the sample 2 is being cooked (during heating).
Start temperature measurement. The temperature measurement device 11 of the present example measures the time of one minute when the detected temperature of the sample 2 becomes, for example, 75 ° C. or more, and records the time and the holding time at that time when the detected temperature of the sample 2 becomes 75 ° C. or more, for example. I do. Further, the recording data may be changed to record the time and the temperature at that time, or the time, the holding time, and the temperature. With such a method, it is possible to record that the heating is performed at 75 ° C. or more for 1 minute or more. And
The measurement can be repeatedly performed on a plurality of samples in the same manner.

FIG. 2 shows a schematic configuration of the temperature measuring device 11 using a block diagram. Measurement unit 10 of this example
Is a sensor signal input unit 28 capable of receiving a temperature measurement signal detected by the sensor unit 13, a measuring unit 21 capable of comparing input temperature data with a set value and measuring a time during which the set temperature is held. , A communication unit 23 capable of communicating data recorded in the RAM 22, a communication unit 23, and a communication unit 23.
Data from the PC 50 via the communication cable 51
And a data output unit 29 that can be transferred to In addition, an output unit 27 that displays on the LCD 5 a display indicating a specified predetermined event among events such as a temperature start timing, a measurement end, an abnormality occurrence, and a measurement in progress, or a signal such as a buzzer. And a time measuring unit 26 capable of acquiring time information such as an end time, and a control unit 24 for controlling these functional units. When the hand switch 14 is turned on, the control unit 24 waits for the temperature detected by the sensor unit 13 by the measurement unit 21 to reach the first set temperature T1, and monitors the elapse of the holding time s to determine that the temperature is normal. When the first set time n1 has elapsed, the time and the holding time s or the time and the temperature at that time are acquired from the sensor unit 13 and the time measuring unit 26 and recorded in the RAM 22. Further, the control unit 24 has a function of measuring the elapsed time until the temperature reaches the first set temperature T1 by the time measuring unit 26, or outputting the data recorded in the RAM 22 to the personal computer 50 by the communication unit 23. Have. The control unit 24 is mainly configured by a CPU capable of performing such control, and set values such as a first set temperature T1 are recorded in the EEPROM 30. The set values of the EEPROM 30 can be rewritten from the personal computer 50 via the communication unit 23, and the user can freely set a predetermined temperature, a holding time, and the like. Further, the control unit 24 can be operated by an operation unit 25 provided with switches 6 such as a power switch, a recording switch, and a mode switch. Setting values such as time can be changed. In the device unit 10 of the present example, these set values can be set only from the personal computer 50, but can be set from the operation unit 25.

FIG. 3 is a flowchart showing an outline of a measuring method using the temperature measuring apparatus of this embodiment. First, initial setting of the temperature measuring device 11 is performed in step ST1. In the initial setting of the measuring unit 10 of this example, communication is performed between the personal computer 50 and the temperature measuring unit 10, and the model code, the fixed ID code, and the user ID recorded in the EEPROM 30 of the measuring unit 10 by the application program of the personal computer 50. Confirmation of code etc. is performed. In step ST1, the current temperature measurement value can be confirmed via the measurement unit 21. Further, it is possible to display the current time of the time measuring unit 26 and adjust the time with the personal computer 50.
Recorded as 0. Note that such initial settings can be locally performed using the operation unit 25 of the measurement unit 10.

In step ST 2, the set value referred to in each measurement is input by the application program running on the personal computer 50 as in step ST 1, and the set value is recorded in the EEPROM 30. This processing can also be performed using the operation unit 25. In this example, temperature control for food poisoning countermeasures is shown as an example, and the lower limit of the heating temperature of the measurement sample, which is the condition for completely killing pathogenic Escherichia coli O-157, is set to the first set temperature T1.
Is set to 75 ° C., and 1 minute is set as the first set time n1. Further, the upper temperature limit is set to the second set temperature T.
As 2, a temperature of 200 ° C. that is safe for cooking is set. Further, 3 minutes are set as an allowable elapsed time n2 from when the hand switch 14 is turned on to when the temperature reaches the first set temperature T1, and these set values are stored in the EEPROM 3.
Written to 0. In addition, in step ST2, the measurement mode, the type of output signal, and the like can be set.
For example, by changing the setting table, a count buzzer sounds until the set temperature T1 is reached. Sounds the count buzzer during holding time measurement. Alternatively, a judgment buzzer sounds. These three functions can be individually turned on / off. Further, when the preset elapsed time n has elapsed, when the holding time has been measured, and the temperature has dropped below the set temperature T1, the second set temperature T2 has been set.
Various modes can be set in advance and recorded in the EEPROM 30, such as a mode in which a buzzer for notifying an abnormality sounds at an interval different from the normal time when the vehicle rises as described above. As described above, when the initial setting of the measurement unit 10 and the input of the set values necessary for the measurement are completed, the measurement is started as follows. At this stage, the personal computer 50 and the measuring unit 10 can be separated from each other, and the results of the following measurement are temporarily stored in the RAM 22 of the measuring unit 10, and then the personal computer 50 and the measuring unit 10 are connected again. Then, it can be transferred to the personal computer 50 side.

In step ST3, sample 2 during cooking
Then, the tip of a probe 15 provided with a temperature sensor 16 is inserted to detect the temperature. The temperature measurement is started via the sensor signal input unit 28 and the measurement unit 21 in response to a signal from the sensor unit 13. The measurement method of step ST3 will be described in more detail below. When the measurement of the sample is completed, the measurement unit 10 is connected to the personal computer 50 again, and in step ST4, the measurement time and temperature, which are the recording data of the temperature management recorded in the RAM 22, are transmitted to the communication unit 2.
3 and to the personal computer 50 via the data output unit 29. At this time, information such as the battery life is also transferred. In the measuring unit 10 of this embodiment, the received data is automatically filed as binary data at the end of the reception so that the data cannot be easily falsified.

FIG. 4 shows the measuring method of the temperature measuring device described in step ST3 in more detail. In the temperature measurement device 11 of this example, a temperature detection step (step ST10) of detecting a temperature until the temperature reaches the first set temperature for each measurement of each sample, and the detected temperature T is maintained at the first set temperature T1 or more. A holding time measuring step of measuring the measured holding time s (step ST20), and a recording step of recording the detected time and the holding time when the holding time s reaches the first set time n1 (step ST30). It is supposed to do. As described above, in this recording step, the setting of the measurement unit 10 can be changed so as to record the time and the detected temperature, or the time and the holding time and the detected temperature.

Further, a temperature detecting step (step ST1)
0) First, in step ST11, the switch 1
Check if 4 has been entered. When the hand switch 14 is turned on, the elapsed time n and the holding time s are initialized (cleared) in step ST12. In step ST13, measurement of the elapsed time n is started. Step ST14
If the elapsed time n has not reached the set second elapsed time n2 in step ST15, the measuring unit 23 determines whether or not the detected temperature T is equal to or higher than the first set temperature T1 in step ST15. When the detected temperature T becomes equal to or higher than the first set temperature T1, the process shifts to step ST21 to start a holding time measuring step (step ST20). Step ST15
If the detected temperature T has not reached the first set temperature T1, the process returns to step ST14 to continue the temperature measurement. If it is determined in step ST14 that the elapsed time n from turning on the hand switch 14 has exceeded the set second elapsed time n2, it is determined that there is some abnormality, and the measurement is stopped. Move to step ST30. The processing method after step ST30 will be described in more detail below.

When the measurement of the holding time s is started in step ST21, first, in step ST23, it is confirmed that the detected temperature T is in the range of 75 ° C. or more of the lower limit T1 and 200 ° C. or less of the upper limit T2. . If the detected temperature T is within the set range, it is checked in step ST25 whether the holding time s has reached a first set time n1 (1 minute in this example) set in advance. If it is determined that the first set time n1 or more has elapsed, the next recording step (step ST3)
The process proceeds to step 0), and the time t and the holding time s are automatically recorded in step ST31. At this time, it is also possible to record the detected temperature T instead of the holding time s or together with the detection time T by the initial setting.

On the other hand, in step ST23, the detected temperature T
However, if it is determined that the temperature is lower than the lower limit T1 set in step ST2 (FIG. 3) or higher than the upper limit T2, the process proceeds to step ST24. In step ST24, the measured holding time s is the elapsed time n3 set as the third set time, for example,
If it is determined that 10 seconds have not elapsed, the process proceeds to step ST26, where the holding time s up to that time is initialized,
It returns to step ST15 and continues measurement. This is for example
This is to prevent recording of poor heating when the sensor unit 13 is inserted into the sample 2 after the sensor unit 13 touches the high-temperature oil 1 used for cooking the fried food as a sample. Therefore, the measurement unit 10 of this example
The temperature control of each fried food can be performed very smoothly by using, and unnecessary error processing or recording can be prevented. Even in such a case, normal measurement can be started continuously.

On the other hand, if it is determined in step ST24 that 10 seconds of the set elapsed time n3 has elapsed, the process proceeds to step ST30 as a recording process.
Further, in step ST30 which is a recording process,
Each time t and holding time s are recorded in the RAM 22 or the EEPROM 30. First, step ST1
In the case shifted from 4, the detected temperature T of the sample is
If the temperature cannot be raised to 75 ° C. or more of the first set temperature T1 within 3 minutes of the set elapsed time n1, the time t and the holding time s (s = 0) at that time are recorded in the RAM 22. Further, in the case shifted from step ST24, the detected temperature T of the sample is changed to the set temperatures T1 and T1.
Assuming that the time elapses from the range of 75 ° C. or more and less than 200 ° C., which is the range of 2, and the set elapsed time n3 of 10 seconds has passed, the time t and the holding time s at that time are recorded. further,
In the case shifted from step ST25, assuming that the detected temperature T of the sample is within the set temperature range and the holding time s has reached one minute or more of the set elapsed time n1, the time t and the holding time at that time s is recorded. further,
In step ST32, the recorded holding time s is
It is determined whether or not the value has a value equal to or longer than a first set time n1 set in advance. If the recorded holding time s is equal to or longer than the first set time n1, it is determined that the measurement has been normally performed. In step ST34, as a process to be performed when the measurement is normally performed, a sound or other signal output is set. If so, perform it and end the series of temperature measurements. On the other hand, if the recorded holding time s is shorter than the first set time n1, in step ST33, a sound or other signal output process set as a process to be performed when measurement is normally performed is performed. .

When a series of temperature measurement is completed, step S
At T40, it is determined whether or not there is a sample to be subsequently measured.
Returning to T11, when the hand switch 14 is turned on again, the same processing as described above is repeated. If the recording switch 6 is erroneously pressed during the measurement of the sample 2, the measurement is stopped. Then, the time t, the temperature T, and the elapsed holding time s, which are the detected values of the sample 2 at that time, are not recorded. Further, when the recording switch 6 is depressed in the middle, the NG buzzer can beep and beep for one second to give a warning.

FIG. 5 is a graph showing a temperature change in a case where the temperature measurement device 11 has performed the temperature control normally. After inserting the probe 15 of the sensor unit 13 into the sample 2, when the hand switch 14 is turned on at time to, the measurement is started. At time t1, the detected temperature becomes the first
Reaches the first set temperature T1, the detected temperature is maintained in a normal range equal to or higher than the first set temperature T1 and equal to or lower than the second set temperature T2, and the first set time n in which the holding time s is set.
When the time of 1 is up, the time t11 and the holding time s at that time are recorded in the RAM 22, and the measurement for the sample 2 ends. At this time, a setting for recording the temperature T can also be made. If the judgment buzzer is set to ON at the same time, the buzzer can be sounded for one second with a sound as OK. In this case, in the case of measuring a sample during cooking for the purpose of food poisoning countermeasures, the temperature of the sample is kept at a certain temperature or higher for a certain period of time, and the pathogenic E. coli O-15 is measured.
7 corresponds to the case where safe cooking with complete sterilization was performed, and by referring to the record after the measurement, it can be confirmed that the sample was properly temperature-controlled.

On the other hand, as shown in FIG. 6, even when there is an abnormality in the temperature management, it can be recorded by the temperature measuring device 11. Similarly to the above, when the hand switch 14 is turned on at the time t0 and the temperature is detected, the second set time n2 elapses without reaching the first set temperature T1 as shown by the one-dot chain line 60a. It is time t12. This may be due to insufficient heating or poor insertion of the probe 15. Therefore, the temperature and time t12 at that time are recorded as error processing, and if necessary, the determination buzzer O
When the setting is N, processing such as a beeping beep for one second and a buzzer sounding for one second can be performed. After reaching the first set temperature T1 at the time t1, the detected temperature T becomes the first set temperature T1 at the time t13 as shown by a broken line 60b.
If the temperature falls below, insufficient heating may be considered. Therefore, the time t13 and the holding time s are recorded as described above. If necessary, the determination buzzer can be set to ON at the same time, and processing such as a beep sound for one second and a buzzer sounding for one second can be performed. Further, if the temperature reaches the second set temperature T2 at time t14 as shown by the solid line 60c after the temperature has become equal to or higher than the first set temperature T1 at time t1 and the measurement of the holding time is started, there is a possibility of abnormal heating. Therefore, the time t14 and the holding time s are recorded in the same manner as described above, and if necessary, processing such as sounding a buzzer can be performed.

Since these three types of curves 60 deviate from maintaining the predetermined temperature or more, which is the temperature management condition of this example, for a predetermined time, there is some abnormality in the cooking equipment, cooking method, or management, and as a result, The obtained cooked product (sample) is determined to be defective. That is, when there is an abnormality in such temperature control, the sample 2 to be measured is
It is possible that the pathogenic Escherichia coli O-157, which is the cause of food poisoning, could not be completely sterilized, and the sample can be identified and confirmed by referring to the record after the measurement. Further, a cause analysis or the like can be performed from these measurement data, and measures such as heating again can be taken. As described above, by using the temperature measuring device 11 of the present embodiment, bacteria causing food poisoning, particularly pathogenic Escherichia coli O-1 can be obtained.
For example, heat treatment at a temperature equal to or higher than a predetermined temperature such as 57 required for sterilization can be easily and surely dealt with. Further, in step ST32, the sample 2 in which the time s during which the temperature in the range set in advance is maintained is equal to or longer than the set first set time n1 is regarded as normal and becomes a non-defective product. On the other hand, the sample 2 indicating less than the first set time n1 is regarded as abnormal and becomes a defective product, and is easily sorted. As described above, by using the temperature measuring device and the measuring method of the present invention, it is possible to perform temperature management without any trouble and to reduce labor of an operator. Further, even in a workplace where personnel cannot be dedicated to temperature management, the use of the temperature measuring device 11 of the present example enables reliable temperature management without human intervention, and the history thereof can be stored in a personal computer or the like. .

Further, in the temperature measuring device 11 of the present embodiment, if there is an abnormality during the measurement, a visual or audible warning can be shown by using a sound, a display or an output from a personal computer from the output unit. The temperature management status can be accurately transmitted to the operator, and the operator can grasp the measurement state by using a signal such as a sound without performing the temperature management exclusively. Therefore, the burden of the temperature measurement operation is reduced, and the temperature management can be performed in parallel with other operations. Also,
The temperature measurement device of the present invention which can easily and surely perform temperature measurement and recording not only at the time of normal operation but also at the time of abnormal operation, and can greatly reduce the labor and labor of an operator relating to temperature management such as cooking temperature of the present example. And a measuring method can be provided.

In the above, the case of using the temperature measuring device and the method of the present embodiment for controlling the heating temperature during cooking has been described by taking the countermeasure against food poisoning as an example. However, the present invention is not limited to this. It is of course possible to use the temperature measuring device and the temperature measuring method of the present invention for temperature management during storage and the like.

[0032]

As described above, in the temperature measuring device and the temperature measuring method according to the present invention, whether or not the temperature has been maintained at a predetermined temperature or higher for a predetermined time is automatically measured. Alternatively, by recording the detected temperature, it can be recorded whether or not the temperature management has been performed normally. Therefore, by adopting the temperature measuring device and the temperature measuring method of the present invention as a countermeasure against food poisoning that has been attracting attention recently, the temperature management of foods being cooked and stored foods is automated, and measurement errors and recording errors are eliminated. It can be performed reliably without occurrence. For this reason, temperature management can be reliably performed without the need to spend human resources for the measurement, and the trouble of temperature measurement is released, so that an article whose temperature is appropriately controlled at low cost can be supplied. By using the temperature measuring device and the temperature measuring method of the present invention, food temperature control can be easily performed even in small-scale restaurants, restaurants, and food processing plants where food temperature control has not been easily implemented. It can also greatly contribute to the prevention of food poisoning.

Further, the temperature measuring device and the temperature measuring method of the present invention can accurately detect an abnormality in temperature management during the temperature measuring process and output it as a record or a signal. Therefore, the burden on the measuring operator can be reduced, and the working efficiency can be further improved. Further, the measurement operation becomes simpler, and even a beginner can surely manage the temperature without causing a recording error while measuring the temperature of the sample in parallel with another operation or simultaneously measuring another sample.

Further, the present invention can provide a temperature measuring device and a temperature measuring method which can easily store and analyze a temperature measurement management result by transferring recorded data from a temperature measuring device to a personal computer. . As a result, the burden on the operator is further reduced, and accurate and quick temperature management data can be obtained.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a temperature measuring device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a schematic configuration of the temperature measuring device shown in FIG. 1 according to the embodiment of the present invention.

FIG. 3 is a schematic flowchart showing the operation of the temperature measuring device shown in FIG.

FIG. 4 is a flowchart showing the operation of the temperature measuring device shown in FIG. 2 in more detail.

FIG. 5 is a diagram showing an example in which the temperature measurement shown in FIG. 4 is normally performed.

6 is a diagram showing an example in which an abnormality has occurred during the temperature measurement shown in FIG.

[Explanation of symbols]

 1. Cooking oil 2. Measurement sample 3. Cooking utensil 4. Heat 5. Display unit 6. Switches 7. Connector 10. Measurement unit 11. Temperature measuring device 12. Sensor cable 13. ··· Sensor unit 14 ··· Hand switch 15 ··· Probe 16 ··· Temperature sensor 21 ··· Measurement unit 22 ··· RAM 23 ··· Communication unit 24 ··· Control unit 25 ··· Operation unit 26 ··· Time measurement unit 27 · -Output unit 28-Sensor signal input unit 29-Data output unit 30-EEPROM 50-Information processing device (PC) 51-Communication cable 60-Abnormal temperature curve

Claims (14)

[Claims] 1. A temperature detecting section capable of detecting a temperature of an object to be measured, and a holding time measuring section capable of measuring a holding time during which a temperature detected by the temperature detecting section is maintained at a first set temperature or higher. And a recording unit capable of recording the holding time or the detected temperature at that time in addition to the time when the holding time reaches a first set time. 2. The temperature measuring device according to claim 1, further comprising an instruction device that allows a user to instruct the start of the operation of the holding time measurement unit each time. 3. The method according to claim 1, wherein if the detected temperature falls below the first set temperature while measuring the holding time, the holding time or the detected temperature at that time is added to the time at that time. A temperature measuring device comprising a recordable first abnormality recording unit. 4. The elapsed time measuring unit according to claim 1, wherein the elapsed time from the start of measurement to the time when the detected temperature reaches the first set temperature can be measured, and the elapsed time reaches a second set time. A second time that can record the holding time or the detected temperature in addition to the time when
A temperature measuring device, comprising: an abnormality recording unit. 5. The method according to claim 1, further comprising the step of recording the holding time or the detected temperature in addition to the time when the detected temperature becomes equal to or higher than a second set temperature during the measurement of the holding time. A temperature measurement device having an abnormality recording unit. 6. The apparatus according to claim 1, further comprising an output unit capable of outputting a signal indicating a measurement state of the detected temperature, wherein the output unit performs the detection while the detected temperature reaches the first set temperature. When the temperature reaches the first set temperature, while the detected temperature is equal to or higher than the first set temperature, a signal indicating at least one of the holding time and the first set time is output. A temperature measuring device characterized in that it is possible. 7. The temperature measuring device according to claim 6, wherein the output section is capable of outputting an electric signal, a sound or a light signal. 8. The apparatus according to claim 1, further comprising an output unit capable of outputting a signal indicating a measurement state of the detected temperature, wherein the output unit sets the detected temperature to the first set value while measuring the holding time. At the time of the first abnormality indicating that the temperature has dropped below the temperature, the second time indicating that the elapsed time from the start of the measurement until the detected temperature reaches the first set temperature has reached the second set time.
It is possible to output a signal indicating at least one of an abnormal condition and a third abnormal condition indicating that the detected temperature has become equal to or higher than a second set temperature during the measurement of the holding time. Temperature measuring device. 9. A temperature detecting step of detecting the temperature of the object to be measured until the temperature reaches a first set temperature, and a holding step of measuring a holding time during which the detected temperature of the object to be measured is kept equal to or higher than the first set temperature. A temperature measuring method, comprising: a time measuring step; and a recording step of recording the holding time or the detected temperature at that time in addition to a time when the holding time reaches a first set time. 10. The method according to claim 9, wherein when the detected temperature falls below the first set temperature during the measurement of the holding time, a first time for recording the holding time or the detected temperature in addition to the time at that time. A temperature measurement method comprising an abnormality recording step. 11. The method according to claim 9, wherein an elapsed time from the start of the measurement until the detected temperature reaches the first set temperature is measured, and when the elapsed time reaches the second set temperature, the time at that time is measured. And a second abnormality recording step of recording the holding time or the detected temperature. 12. The third abnormality recording according to claim 9, wherein when the temperature during which the holding time is being measured becomes equal to or higher than a second set temperature, the holding time or the detected temperature is recorded in addition to the time at that time. A temperature measuring method comprising a step. 13. The method according to claim 9, further comprising an output step capable of outputting a signal indicating a measurement state of the detected temperature. In the output step, while the detected temperature reaches the first set temperature, When the first set temperature is reached,
A temperature measuring method, characterized in that a signal can be output at least when the holding time reaches the first set time while the detected temperature is equal to or higher than the first set temperature. 14. The method according to claim 9, further comprising an output step of outputting a signal indicating a state of measurement of the detected temperature, wherein the output temperature is set to the first set temperature during the measurement of the holding time. A first abnormality indicating that the temperature has decreased to less than the second abnormality, a second abnormality indicating that the elapsed time from the start of measurement until the detected temperature reaches the first set temperature has reached the second set time, and A temperature measurement method, comprising: outputting a signal at least during a third abnormality indicating that the detected temperature has become equal to or higher than a second set temperature during measurement of the holding time.