阅读说明：本技术 用于校准温度测量装置的方法 (Method for calibrating a temperature measuring device ) 是由 K·鲁姆勒 于 2019-07-18 设计创作，主要内容包括：本发明涉及一种用于校准温度测量装置(1)的方法,该温度测量装置具有温度测量单元(10)和至少一个能够连接到温度测量单元(10)上的传感器(11),其中,温度校准器(12)具有传感器容纳件(13),温度测量装置(1)的传感器(11)装入到传感器容纳件中并被加热到检验温度,其中,所述方法至少包括如下步骤：在温度校准器(12)和温度测量装置(1)之间建立用于数据传递的通信通道(14),以及借助通信通道(14)从温度校准器(12)向温度测量装置(1)传递校准值。(The invention relates to a method for calibrating a temperature measuring device (1) having a temperature measuring unit (10) and at least one sensor (11) that can be connected to the temperature measuring unit (10), wherein a temperature calibrator (12) has a sensor receptacle (13) into which the sensor (11) of the temperature measuring device (1) is inserted and heated to a test temperature, wherein the method comprises at least the following steps: a communication channel (14) for data transmission is established between the temperature calibrator (12) and the temperature measuring device (1), and calibration values are transmitted from the temperature calibrator (12) to the temperature measuring device (1) by means of the communication channel (14).)

1. Method for calibrating a temperature measuring device (1) having a temperature measuring cell (10) and at least one sensor (11) which can be connected to the temperature measuring cell (10), wherein a temperature calibrator (12) having a sensor receptacle (13) is provided, into which the sensor (11) of the temperature measuring device (1) is inserted and is heated to a test temperature, wherein the method comprises at least the following steps:

-establishing a communication channel (14) for data transfer between the temperature calibrator (12) and the temperature measuring device (1), and

-transferring the calibration value from the temperature calibrator (12) to the temperature measuring device (1) by means of the communication channel (14).

2. Method according to claim 1, characterized in that the actual temperature value is transmitted from the temperature measuring device (1) to the temperature calibrator (12) by means of the communication channel (14) before the sensor (11) is installed in the sensor receptacle (12).

3. The method according to claim 1 or 2, characterized in that after transferring the calibration values from the temperature calibrator (12) to the temperature measuring device (1), the calibration values are detected and processed by a processor (15) of the temperature measuring unit (10) or by a sensor (11) with a data module (17) for adjusting the temperature measurement.

4. A method according to claim 3, characterized in that after the processor (15) of the temperature measuring unit (10) or the data module (17) of the sensor (11) detects and processes the calibration values, subsequently measured temperature monitoring values are transferred from the temperature measuring unit (10) to the temperature calibrator (12).

5. Method according to one of the preceding claims, characterized in that the communication channel (14) is designed to be wireless and the data transfer between the temperature calibrator (12) and the data module (17) of the temperature measuring device (1) or the sensor (11) takes place by means of near field communication.

6. Method according to one of the preceding claims, characterized in that a data memory (16) is provided and/or that the data memory (16) is integrated in the temperature calibrator (12), wherein at least calibration values are stored in the data memory (16) for the sensor or respectively for each calibrated sensor.

7. Method according to claim 6, characterized in that the analysis of the calibration values is performed after a plurality of calibrations of each sensor (11) in turn with a temperature calibrator (12), whereby a respective aging profile is established for the sensor (11) or for each calibrated sensor (11).

8. Method according to one of the preceding claims, characterized in that data transfer takes place between the temperature calibrator (12) and the temperature measuring unit (10), the sensor (11) or the data module (17) of the sensor (11) of the temperature measuring device (1).

9. Method according to one of the preceding claims, characterized in that the sensor (11) has an ID carrier (18) that can be read optically or with electromagnetic signals, wherein the ID carrier (18) of the sensor (11) is read by the temperature calibrator (12) before calibration.

10. The method as claimed in one of the preceding claims, characterized in that the temperature calibrator (12) has a communication module (19) with which a communication channel (14) with the temperature measuring device (1) or with the sensor (11) is established and an analysis is performed on the determined calibration values.

11. A temperature calibrator (12) for carrying out the method according to one of the preceding claims, characterized in that the temperature calibrator (12) has a communication module (19) with which a communication channel (14) can be established with the temperature measuring device (1) and an analysis can be performed on the determined calibration values.

12. The temperature calibrator (12) according to claim 11, wherein the temperature calibrator (12) has a data memory (16) for storing sensor data.

13. Temperature calibrator (12) according to claim 11 or 12, characterized in that the functions of calibration, adjustment and verification of the sensor (11) or of the temperature measuring unit (10) can all be carried out fully automatically.

14. Temperature calibrator (12) according to one of claims 11 to 13, characterized in that the calibration and control parameters for carrying out the method are stored in and can be read from the ID carrier (18) of the sensor (11), so that the calibration, adjustment and calibration of the sensor (11) and/or of the temperature measuring unit (10) can be carried out without re-entering these parameters.

Technical Field

The invention relates to a method for calibrating a temperature measuring device having a temperature measuring unit and at least one sensor that can be connected to the temperature measuring unit, wherein a temperature calibrator is provided with a sensor receptacle, into which the sensor of the temperature measuring device is inserted and heated to a test temperature.

Background

Temperature measuring devices having a temperature measuring unit and a sensor connected to the temperature measuring unit by a sensor cable or by radio are widely known. If a sensor is used to measure the temperature, the temperature can usually be displayed on a display means of the temperature measuring unit.

A typical sensor is based on a thermocouple comprising a pair of metallic conductors of different materials connected to each other at one end and making a temperature measurement using the so-called pyroelectric effect. Resistance thermometers with resistance varying with temperature may also be used, wherein other measuring elements may also be used in the present invention.

In this case, the measuring sensor is usually inserted into a sensor housing, and the determination and output of the temperature measurement values is carried out by a temperature measuring unit. A temperature measuring device in this sense comprises a temperature measuring unit and one or more sensors, which are each connected to the temperature measuring unit by a sensor cable or also wirelessly.

Due to aging, the detection of temperature measurement values can deviate over a long period of use, so that the temperature measuring device must be calibrated regularly, in particular when it is used in technical fields where very precise determination of the temperature is required. In order to calibrate such a temperature measuring device, a temperature calibrator is used, into the sensor receptacle of which a sensor can be inserted, which is heated to a certain fixed temperature by the heating element of the temperature calibrator, so that ultimately a comparison can be made between the temperature output by the temperature measuring unit and the calibration temperature of the temperature calibrator using the specified temperature of the temperature calibrator.

Such a temperature calibrator is disclosed, for example, in document EP 2793008 a 1. The sensor receptacle is inserted into a calibration sleeve which can be heated to a calibration temperature by means of a heating device. The temperature calibrator displays the current, in particular very precise, checked and thus reliable calibration temperature by means of a corresponding display device.

After a deviation between the specified temperature of the temperature calibrator and the temperature displayed on the temperature measuring unit of the temperature measuring device has been successfully measured, a deviation can be determined, which is ultimately either used for subsequent adjustment of the temperature measuring unit or calculated for future measurements with the temperature measuring device.

Such calibration of the temperature measuring device with the temperature calibrator is relatively long, and the sensor must be removed from its intended use and inserted into the sensor receptacle for a relatively long calibration period. Furthermore, the later use of the determined temperature measurement deviation (i.e. for adjusting the temperature measurement device accordingly or for calculating the value of the temperature deviation at the time of future temperature measurements) may result in additional costs. This requires, in particular, the combination of a temperature measuring device and the use of later-determined calibration values for improving the temperature calibration.

Disclosure of Invention

It is an object of the present invention to improve the method of calibrating a temperature measuring device with a temperature calibrator. An advantageous and in particular time-saving application of the calibration values is to be found here.

This object is achieved with the features of the respective characterizing portion starting from the method according to the preamble of claim 1 and from the temperature calibrator according to the preamble of claim 11. Advantageous developments of the invention are specified in the dependent claims.

To improve the method, the invention proposes that a communication channel is established between the temperature calibrator and the temperature measuring device for data transmission, and that the calibration values of the temperature calibrator are transmitted to the temperature measuring device by means of the communication channel.

The core idea of the invention is to establish communication between the temperature measuring device and the temperature calibrator, i.e. between the temperature measuring unit or sensor and the temperature calibrator. The establishment of the communication channel enables the transfer of calibration values from the temperature calibrator to the temperature measuring device, so that, for example, the determined calibration values are stored in the temperature measuring unit and can be taken into account when displaying the temperature in the future. The communicated calibration values may be associated or correspond to a particular sensor herein. If the operation is started again after the calibration of the temperature measuring device, the output of the measured temperature can be displayed automatically corrected for each sensor.

In the sense of the invention, the communication channel is established either wirelessly or by wire. It is conceivable here for the temperature measuring unit and the temperature calibrator to be connected by a data cable, but it is particularly advantageous for the communication channel to be formed wirelessly, for example by means of Near Field Communication (NFC).

In the calibration, according to the invention, the actual temperature value can first be transmitted from the temperature measuring device to the temperature calibrator via the communication channel before the sensor is inserted into the sensor receptacle. The data transfer via the communication channel can thus be transferred both from the temperature calibrator to the temperature measuring device and from the temperature measuring device to the temperature calibrator. For example, the actual temperature values can be stored in a temperature calibrator, so that the temperature deviations reflected in the calibration values can be determined by the temperature calibrator and transmitted to the temperature measuring device as early as possible. This is based on the assumption that, in particular, a calibration temperature is set which is approximately equal to the main measurement temperature of the sensor used of the temperature measuring device.

It is also conceivable that the calibration values are detected and processed by the processor of the temperature measurement unit for calibrating the temperature measurement after transferring the calibration values from the temperature calibrator to the temperature measurement device. The detection and processing of the calibration values takes place electronically, advantageously in particular without operator intervention.

It is also possible to transfer subsequently measured temperature monitoring values from the temperature measuring unit to the temperature calibrator after the calibration values have been detected and processed by the processor of the temperature measuring unit. The temperature monitoring value may also be stored in the temperature calibrator and recorded accordingly.

For storing the data, a data memory can be provided and can in particular be integrated in the temperature calibrator, wherein at least calibration values are stored in the data memory for the sensors, or respectively at least corresponding calibration values are stored in the data memory for each calibrated sensor. It can thus be determined after a relatively long period of time has elapsed, and in particular after a plurality of calibration processes, whether the sensor is already in an aging state, and it can be decided whether to replace the sensor, for example. The temperature calibrator can have a display means on which the calibration log/calibration history of each sensor to be calibrated can be displayed. If the calibration values, for example, indicate that the temperature deviation between the calibrated temperature and the temperature output by the temperature measuring unit becomes increasingly significant, a corresponding decision can be made as to whether the sensor has to be replaced.

In particular, the evaluation can also be carried out automatically, so that after a plurality of calibrations of a sensor one after the other with a temperature calibrator, an evaluation of the calibration values is carried out, whereby an aging profile is established for the sensor or, correspondingly, for each calibrated sensor. The aging profile can be displayed, in particular, on a display means of the temperature calibrator.

The data transmission between the temperature calibrator and the temperature measuring unit can be carried out either towards the temperature measuring unit or towards the sensor. For this purpose, the sensor can have a data module, for example in or connected to a plug, with which it is connected to the temperature measuring unit via a sensor cable. The data module is here associated with the sensor itself, and if the temperature calibrator passes the calibration values to the data module, the sensor together with the data module can be used as a sensor that has been recalibrated without the temperature measurement unit itself receiving, detecting and processing the calibration values. The data module can also be arranged in the sensor head itself, but the sensor cannot therefore be used for excessively high temperatures, since the data module could otherwise be damaged. The data module is therefore advantageously embodied in a structural unit, for example, with a sensor plug which connects the sensor to the temperature measuring unit.

It is also advantageous if the sensor has an ID carrier/carrier which is readable optically or by means of electromagnetic signals, wherein the ID carrier of the sensor is read by a temperature calibrator before calibration. The ID carrier is embodied, for example, as an RFID tag, and an ID reading unit is provided in or in connection with the temperature calibrator, which automatically identifies the sensor. In this respect, the aging profile and thus the calibration log of a particular sensor can be downloaded and displayed, for example, from a data memory.

To carry out the method according to the invention, the temperature calibrator has a communication module with which a communication channel can be established with the temperature measuring device and an analysis of the determined calibration values can be carried out. The communication module can also be implemented in a structural unit with a control unit for operating the temperature calibrator.

The invention is also directed to a temperature calibrator for carrying out the method according to the invention, for which purpose the temperature calibrator according to the invention has a communication module with which a communication channel can be established with a temperature measuring device and an analysis can be performed on the determined calibration values. It is also advantageous if the temperature calibrator has a data memory for storing sensor data. In particular, the temperature calibrator has a display means with which sensor data can be displayed, which in particular comprises an aging profile and calibration records of the particular sensor. In particular, the identification of the identified sensor can also be displayed first of all by means of a display device of the temperature calibrator, so that the operator can be confirmed by the feedback: the correct sensor is identified and can be associated with a corresponding aging profile.

It is also advantageous that the functions of calibrating, adjusting and checking the sensor or measuring device can be carried out completely automatically. In particular, the test and control parameters for carrying out the method can be stored in and read from the ID carrier of the sensor, so that the calibration, adjustment and testing of the sensor and/or the temperature measuring unit can be carried out without having to re-enter these parameters.

The data stored in the ID carrier may for example comprise the test temperature that should be provided by the temperature calibrator, or the data comprise the temperature range in which the sensor can be used. The data may also comprise the typical temperature range of the application, in which the test points are to be arranged closely, or the permissible measurement deviations of the sensors, in order to be able to decide whether a readjustment is necessary at all in the case of small measurement deviations or whether a malfunction has to be detected in the case of very large measurement deviations of the sensors. Linearization types or profiles may also be stored in the data.

Drawings

Further measures to improve the invention are shown in detail below with reference to the description of preferred embodiments of the invention and with reference to the drawings. The figures show:

figure 1 shows a schematic diagram of a temperature measuring device according to the invention communicating with a temperature calibrator,

FIG. 2 shows a schematic representation of a temperature measuring device with a sensor and an ID carrier arranged on the sensor and a data module which is implemented in connection with the sensor, an

Fig. 3 shows a schematic diagram of a temperature measuring device and a temperature calibrator with data storage.

List of reference numerals:

1 temperature measuring device

10 temperature measuring unit

11 sensor

12 temperature calibrator

13 sensor holder

14 communication channel

15 processor

16 data storage

17 data module

18 ID carrier

19 communication module

20 sensor cable

21 operating region

22 ID reading unit

Detailed Description

Fig. 1 shows a schematic representation of a temperature measuring device 1 having a temperature measuring unit 10 and a sensor 11, the sensor 11 being connected to the temperature measuring unit 10 by a sensor cable 20. Furthermore, a temperature calibrator 12 is shown, which has a sensor receptacle 13, into which the sensor 11 is inserted for calibration. In a schematically illustrated manner, the temperature measuring unit 10 is designed with a processor 15 and the temperature calibrator 12 is designed with an operating area 21.

According to the invention, a communication channel 14 is established between the temperature measuring device 1 and the temperature calibrator 12, through which communication channel 14 calibration values can be transferred, for example, from the temperature calibrator 12 to the temperature measuring device 1. In this case, it is passed on to the temperature measuring unit 10, but can also be passed on in a manner not shown in detail, for example directly to the sensor 11.

In order to establish the communication channel 14 between the temperature measuring device 1 and the temperature calibrator 12, the temperature calibrator 12 has a communication module 19, which is embodied, for example, as a wireless interface, in particular, based on near field communication, such as bluetooth or WLAN.

Via the communication channel 14, it is possible to transmit data from the temperature measuring device 1, in particular from the temperature measuring unit 10, to the temperature calibrator 12, for example, actual temperature values before the actual calibration and/or temperature monitoring values after the calibration has ended. Where the communication channel 14 is primarily used to transfer calibration values from the temperature calibrator 12 to the temperature measurement unit 10.

Fig. 2 shows in a schematic configuration a temperature measuring device 1 with a temperature measuring unit 10, which comprises a processor 15, a sensor 11 with a sensor cable 20 being shown separately from the temperature measuring unit 10. At the end of the sensor cable 20 facing away from the sensor 11, a data module 17 is provided, which is embodied as a plug-in unit that can be inserted into a corresponding device of the temperature measuring unit 10. The diagram shows a communication channel 14 between the temperature calibrator 12 with the communication module 19 and the data module 17, the communication channel 14 may for example be implemented wirelessly. The same is true for embodiments in which the processor 15 is already integrated in the sensor 1.

Furthermore, the sensor 11 has an ID carrier 18, and if the sensor 11 is inserted into the sensor receptacle 13, the ID reading unit 22 can read the ID carrier 18, for example if the ID carrier 18 is embodied as an RFID tag. Thus, the temperature calibrator 12 can determine the identity of the sensor 11 and the calibration values that are transmitted to the temperature measuring device 1 using the communication channel 14 can be assigned exclusively to this sensor 11.

Fig. 3 shows a further schematic illustration of the temperature measuring cell 10 with the sensor 11 arranged in the temperature calibrator 12, and a communication channel 14 is established between the temperature measuring cell 10 and the temperature calibrator 12. Furthermore, the data memory 16 is shown separately, which can also be implemented in one structural unit with the temperature calibrator 12, in particular the data memory 16 can be integrated/built-in the housing of the temperature calibrator 12. The data memory 16 can be used particularly advantageously for storing sensor-11-specific data and, if a calibration of the sensor 11 is carried out, a calibration record of this particular sensor 11 is read from the data memory 16 and displayed, for example, on the operating field 21 of the temperature calibrator 12.

The invention is not limited in its implementation to the preferred embodiments described above. But a number of variants are conceivable which utilize embodiments designed in principle differently from the solutions shown. All the features and/or advantages (including constructional details or spatial arrangements) which can be derived from the claims, the description and the drawings are essential to the invention both in their own right and in the various combinations.