Intelligent handheld temperature and pressure instrument and temperature measurement and control method thereof

Abstract

The present invention relates to the field of temperature detection technology, and in particular to an intelligent handheld temperature and pressure instrument and a temperature measurement control method thereof, wherein a frequency monitoring module receives a start-up signal to determine whether the temperature measurement performance of the temperature and pressure instrument meets the standard; a current monitoring module determines whether the transmission stability of the current signal meets the standard, and, under the condition that the transmission stability of the current signal does not meet the standard, a pressurization and current stabilization module is started to stabilize the current; a temperature monitoring module determines whether the temperature fluctuation trend meets the standard, and, under the condition that the temperature fluctuation trend does not meet the standard, a filtering and current stabilization module is started; a temperature monitoring module determines an adjustment capacitor or an adjustment voltage based on a temperature change rate difference, and, calculates a compensation value and adds it to the output signal of the temperature and pressure instrument. The present invention improves the monitoring accuracy of the temperature and pressure instrument readings, and further improves the reliability and accuracy of the temperature and pressure instrument readings.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature detection, and in particular to an intelligent handheld temperature and pressure instrument and a temperature measurement and control method thereof. Background Art

[0002] With the increasing demand for temperature and pressure measurement in modern industry, scientific research and daily life, traditional measuring instruments can no longer meet the requirements of high precision, portability and intelligence. Intelligent handheld temperature and pressure gauges have emerged, which integrate advanced temperature and pressure sensors, microprocessors, display and communication modules and other high-tech technologies, realize fast and accurate measurement of temperature and pressure, and have functions such as data processing, storage, transmission and intelligent control.

[0003] In terms of temperature measurement and control methods, the intelligent handheld temperature and pressure instrument adopts a variety of advanced technologies, including high-precision temperature sensors (such as DS18B20, etc.), linear interpolation algorithms, temperature compensation algorithms, etc., to ensure accurate temperature readings under different environmental conditions. At the same time, through real-time processing by the microprocessor, the instrument can automatically perform temperature calibration, error correction and data processing, further improving the accuracy and reliability of the measurement.

[0004] In addition, the intelligent handheld temperature and pressure instrument also has a convenient operation interface and user-friendly design. Users can easily complete the setting of measurement parameters, reading and storage of data through simple button operation or touch screen control, and transmit data to computers or other smart devices for analysis and processing through USB, Bluetooth and other communication methods.

[0005] Chinese Patent Publication No.: CN114293981 B discloses a permanent direct-reading downhole temperature and pressure tester. The invention discloses a permanent direct-reading downhole temperature and pressure tester, including a body, the body has a central channel; the outer circle of the body is provided with a shoulder, the end face of the shoulder is provided with an electrical installation hole and a test device installation hole, the electrical installation hole is provided with a circuit component, the test device installation hole is provided with a pressure test component; the electrical installation hole and the test device installation hole are connected through a wire hole; a pressure transmission hole is provided in the central channel of the body, and the pressure transmission hole is connected with the test device installation hole. The pressure sensing surface of the pressure gauge of the invention is provided with a spiral tube, and the spiral tube is filled with an isolation liquid to prevent the pressure gauge from directly contacting the external oil-water mixture and gas, thereby improving the working life of the pressure gauge and the reliability and accuracy of the measurement. The invention can use multiple testers in series to monitor the downhole formation pressure, oil pipe pressure and downhole temperature in real time.

[0006] It can be seen that the permanent direct-reading downhole temperature and pressure tester has the following problems: the invention prevents the pressure gauge from direct contact with the external oil-water mixture and gas by installing a spiral tube with an isolation fluid on the front end of the pressure sensing surface of the press, thereby improving the working life of the pressure gauge and the reliability and accuracy of the measurement. However, the invention lacks monitoring of the accuracy of the pressure gauge readings and cannot guarantee the reliability of the obtained data. Summary of the invention

[0007] To this end, the present invention provides a temperature measurement and control method for an intelligent handheld temperature and pressure instrument, so as to overcome the problem in the prior art that the readings are lacking in monitoring and the reliability and accuracy of the readings cannot be guaranteed.

[0008] To achieve the above objectives, on the one hand, the present invention provides a temperature measurement and control method of an intelligent handheld temperature and pressure instrument, comprising:

[0009] The frequency monitoring module receives the start signal and determines whether the temperature measurement performance of the temperature and pressure instrument meets the standard based on the temperature fluctuation frequency;

[0010] Under the condition that the temperature measurement performance of the temperature and pressure instrument does not meet the standard, the current monitoring module determines whether the transmission stability of the current signal meets the standard based on the current standard deviation, and starts the pressurization and current stabilization module under the condition that the transmission stability of the current signal does not meet the standard;

[0011] Under the condition that the pressurized current stabilizing module is started, the temperature monitoring module determines whether the temperature fluctuation trend meets the standard based on the temperature change rate, and the temperature monitoring module starts the filtering current stabilizing module under the condition that the temperature fluctuation trend does not meet the standard;

[0012] Under the condition that the filtering and current stabilizing module is started, the temperature monitoring module determines whether the temperature fluctuation trend meets the standard based on the temperature change rate, and the temperature monitoring module determines to adjust the capacitance of the filtering and current stabilizing module or adjust the voltage of the pressurizing and current stabilizing module based on the temperature change rate difference;

[0013] Under the condition that the temperature measurement performance of the thermometer and pressure gauge meets the standard, the temperature monitoring module determines whether to start the temperature compensation module based on the ambient temperature change value of the thermometer and pressure gauge, and the temperature compensation module calculates the compensation value based on the working temperature and adds it to the output signal of the thermometer and pressure gauge, wherein the compensation value is a correction amount for the resistance value.

[0014] Furthermore, the frequency monitoring module determines whether the temperature measurement performance of the temperature and pressure instrument meets the standard based on the temperature fluctuation frequency, including:

[0015] If the temperature fluctuation frequency is greater than the preset temperature fluctuation frequency, the frequency monitoring module determines that the temperature measurement performance of the temperature and pressure instrument does not meet the standard;

[0016] If the temperature fluctuation frequency is less than or equal to the preset temperature fluctuation frequency, the frequency monitoring module determines that the temperature measurement performance of the temperature and pressure instrument meets the standard.

[0017] Furthermore, the current monitoring module determines whether the transmission stability of the current signal meets the standard based on the current standard deviation.

[0018] If the current standard deviation is greater than the preset current standard deviation, the current monitoring module determines that the transmission stability of the current signal does not meet the standard and starts the pressurized current stabilization module;

[0019] If the current standard deviation is less than or equal to the preset current standard deviation, the current monitoring module determines that the transmission stability of the current signal meets the standard.

[0020] Furthermore, the temperature monitoring module determines whether the temperature fluctuation trend meets the standard based on the temperature change rate.

[0021] If the temperature change rate is greater than the preset temperature change rate, the temperature monitoring module determines that the temperature fluctuation trend does not meet the standard and starts the filtering and current stabilization module;

[0022] If the temperature change rate is less than or equal to the preset temperature change rate, the temperature monitoring module determines that the temperature fluctuation trend meets the standard.

[0023] Furthermore, the temperature monitoring module determines to adjust the capacitance of the filtering and current stabilizing module or adjust the voltage of the pressurizing and current stabilizing module based on the temperature change rate difference.

[0024] If the temperature change rate difference is less than or equal to a preset temperature change rate difference, the temperature monitoring module determines to adjust the voltage of the pressurized current stabilizing module;

[0025] If the temperature change rate difference is greater than the preset temperature change rate difference, the temperature monitoring module determines to adjust the capacitance of the filtering and current stabilization module.

[0026] Furthermore, the temperature monitoring module sets several adjustment modes for the capacitor of the filtering and current stabilizing module, and each adjustment mode has a different adjustment range for the capacitor of the filtering and current stabilizing module.

[0027] Furthermore, the temperature monitoring module sets several adjustment modes for the voltage of the pressurized current stabilizing module, and each adjustment mode has a different adjustment range for the voltage of the pressurized current stabilizing module.

[0028] Furthermore, under the condition that the temperature measurement performance of the thermometer and pressure gauge meets the standard, the temperature monitoring module determines whether to start the temperature compensation module based on the ambient temperature change value of the thermometer and pressure gauge, and starts the temperature compensation module under the condition that the ambient temperature change value is greater than a preset ambient temperature change value.

[0029] Furthermore, the temperature compensation module calculates the compensation value using the following formula:

[0030]

[0031] Wherein, R represents the compensation value, R0 represents the resistance value measured when temperature compensation is not performed, T represents the operating temperature of the temperature and pressure instrument, T0 represents the temperature of a known reference point, and k represents the slope of the change of the resistance of the thermistor with temperature.

[0032] On the other hand, the present invention also provides an intelligent handheld temperature and pressure instrument, comprising:

[0033] Frequency monitoring module, used to monitor the temperature fluctuation frequency to determine whether the temperature measurement performance of the temperature and pressure instrument meets the standards;

[0034] A current monitoring module, which is connected to the frequency monitoring module, is used to monitor the current standard deviation to determine whether the transmission stability of the current signal meets the standard and start the pressurized current stabilization module under the condition that the transmission stability of the current signal does not meet the standard;

[0035] A pressurized current stabilizing module, which is connected to the current monitoring module and is used to stabilize the current by pressurizing;

[0036] A filtering and current stabilizing module, which is connected to the current monitoring module and is used to stabilize the current by filtering;

[0037] A temperature monitoring module is connected to the pressurizing and current stabilizing module and the filtering and current stabilizing module, and is used to determine whether the temperature fluctuation trend meets the standard based on the temperature change rate, and to determine to adjust the filtering and current stabilizing module or the pressurizing and current stabilizing module based on the temperature change rate difference, and to calculate the compensation value based on the working temperature of the temperature and pressure instrument and add it to the output signal of the temperature and pressure instrument.

[0038] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention determines whether the temperature measurement performance of the temperature and pressure instrument meets the standards by judging the temperature fluctuation frequency of the readings. A large temperature fluctuation frequency indicates that the temperature measurement performance does not meet the standards and the reading accuracy is low. The current monitoring module determines whether the inaccurate reading is caused by unstable current signal transmission based on the transmitted current standard deviation. The pressurization and current stabilization module is started because of the inaccurate reading caused by unstable current signal transmission. The filtering and current stabilization module is started under the condition that the pressurization and current stabilization module still does not meet the standards after adjustment, and the transmission of the current signal is further stabilized. Under the condition that it is determined that the temperature measurement performance of the temperature and pressure instrument meets the standards, it is determined whether to start the temperature compensation module based on the ambient temperature change value of the temperature and pressure instrument, and the calculated compensation value is used as the correction value output signal of the resistance value, thereby improving the monitoring accuracy of the readings and further improving the reliability and accuracy of the readings.

[0039] Furthermore, the present invention determines whether the temperature measurement performance of the temperature and pressure instrument meets the standard based on the temperature fluctuation frequency, thereby determining whether the reading accuracy meets the standard, further improving the monitoring accuracy of the readings, and improving the reliability and accuracy of the readings.

[0040] Furthermore, the present invention determines whether the transmission stability of the current signal meets the standard based on the current standard deviation, and determines whether the temperature measurement performance of the thermometer does not meet the standard due to unstable current signal transmission based on the current standard deviation, thereby improving the monitoring accuracy of the readings and improving the reliability and accuracy of the readings.

[0041] Furthermore, the present invention starts the pressurized current stabilization module based on the low reading accuracy caused by unstable current signal transmission, and determines the temperature fluctuation trend based on the temperature change rate to determine the reading accuracy of the temperature and pressure instrument. If the reading accuracy still does not meet the standard, the filtering current stabilization module is started to further stabilize the current signal, thereby improving the monitoring accuracy of the reading and improving the reliability and accuracy of the reading.

[0042] Furthermore, the present invention adjusts the voltage value or capacitance value of the pressure-boosting current stabilizing module or the filtering current stabilizing module in response to the situation where the current signal transmission is still unstable after the filtering current stabilizing module is started, and sets several adjustment methods for the voltage value or capacitance value according to the temperature change rate difference, thereby improving the monitoring accuracy of the readings and improving the reliability and accuracy of the readings.

[0043] Furthermore, under the condition that the temperature measurement performance of the thermobarometer meets the standard, the present invention determines whether to start the temperature compensation module based on the ambient temperature change value of the thermobarometer. Excessive temperature change will have a greater impact on the temperature measurement accuracy of the thermobarometer, resulting in low reading accuracy. The compensation value is calculated based on the operating temperature of the thermobarometer, which further improves the monitoring accuracy of the readings and improves the reliability and accuracy of the readings. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 This is a flow chart of a temperature measurement and control method of an intelligent handheld temperature and pressure instrument according to an embodiment of the present invention;

[0045] Figure 2 This is a structural block diagram of an intelligent handheld temperature and pressure instrument according to an embodiment of the present invention;

[0046] Figure 3 A flow chart of determining whether the temperature measurement performance of a temperature and pressure instrument meets the standards according to an embodiment of the present invention;

[0047] Figure 4 The present invention is a flowchart of determining whether the transmission stability of a current signal meets the standard. DETAILED DESCRIPTION

[0048] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0049] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0050] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0051] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] See also Figure 1 As shown, it is a flow chart of the temperature measurement control method of the intelligent handheld temperature and pressure instrument according to an embodiment of the present invention.

[0053] The embodiment of the present invention provides a temperature measurement and control method of an intelligent handheld temperature and pressure instrument, comprising:

[0054] Step S1, the frequency monitoring module receives a start signal and determines whether the temperature measurement performance of the temperature and pressure instrument meets the standard based on the temperature fluctuation frequency;

[0055] Step S2, when the temperature measurement performance of the temperature and pressure instrument does not meet the standard, the current monitoring module determines whether the transmission stability of the current signal meets the standard based on the current standard deviation, and starts the pressurization and current stabilization module when the transmission stability of the current signal does not meet the standard;

[0056] Step S3, under the condition that the pressurized current stabilizing module is started, the temperature monitoring module determines whether the temperature fluctuation trend meets the standard based on the temperature change rate, and the temperature monitoring module starts the filtering current stabilizing module under the condition that the temperature fluctuation trend does not meet the standard;

[0057] Step S4, under the condition that the filtering and current stabilizing module is started, the temperature monitoring module determines whether the temperature fluctuation trend meets the standard based on the temperature change rate, and the temperature monitoring module determines to adjust the capacitance of the filtering and current stabilizing module or adjust the voltage of the pressurizing and current stabilizing module based on the temperature change rate difference;

[0058] Step S5, under the condition that it is determined that the temperature measurement performance of the temperature and pressure instrument meets the standard, the temperature monitoring module determines whether to start the temperature compensation module based on the ambient temperature change value of the temperature and pressure instrument, and the temperature compensation module calculates the compensation value based on the working temperature and adds it to the output signal of the temperature and pressure instrument, wherein the compensation value is a correction amount of the resistance value.

[0059] Specifically, the method for detecting the temperature fluctuation frequency is to record the number of different values ​​of the temperature and pressure instrument reading within a preset time, such as 5 seconds, which is not specifically limited. The ratio of the number to the preset time is the temperature fluctuation frequency.

[0060] Specifically, the current standard deviation is calculated as:

[0061]

[0062] Wherein, σ represents the current standard deviation, ij represents the jth instantaneous current value in unit time, in ampere, i0 represents the average value of the instantaneous current value in unit time, and N represents the number of instantaneous current values, wherein the unit time is, for example, 5s, which is not specifically limited.

[0063] Specifically, the temperature change rate is the ratio of the temperature change to the corresponding time.

[0064] Specifically, the present invention determines whether the temperature measurement performance of the temperature and pressure instrument meets the standards by judging the temperature fluctuation frequency of the readings. A large temperature fluctuation frequency indicates that the temperature measurement performance does not meet the standards and the reading accuracy is low. The current monitoring module determines whether the inaccurate reading is caused by unstable current signal transmission based on the transmitted current standard deviation. The pressurization and current stabilization module is started because of the inaccurate reading caused by unstable current signal transmission. If the pressurization and current stabilization module still does not meet the standards after adjustment, the filtering and current stabilization module is started to further stabilize the transmission of the current signal. If it is determined that the temperature measurement performance of the temperature and pressure instrument meets the standards, it is determined whether to start the temperature compensation module based on the ambient temperature change value of the temperature and pressure instrument, and the calculated compensation value is used as the correction value output signal of the resistance value, thereby improving the monitoring accuracy of the readings and further improving the reliability and accuracy of the readings.

[0065] See also Figure 3 As shown, it is a flow chart of an embodiment of the present invention for determining whether the temperature measurement performance of the temperature and pressure instrument meets the standard.

[0066] Specifically, the frequency monitoring module determines whether the temperature measurement performance of the temperature and pressure instrument meets the standard based on the temperature fluctuation frequency.

[0067] If the temperature fluctuation frequency is greater than the preset temperature fluctuation frequency of 5 Hz, the frequency monitoring module determines that the temperature measurement performance of the temperature and pressure instrument does not meet the standard;

[0068] If the temperature fluctuation frequency is less than or equal to the preset temperature fluctuation frequency of 5 Hz, the frequency monitoring module determines that the temperature measurement performance of the temperature and pressure instrument meets the standard.

[0069] Specifically, the present invention determines whether the temperature measurement performance of the temperature and pressure instrument meets the standard based on the temperature fluctuation frequency. The larger the temperature fluctuation frequency, the faster the temperature changes and the more unstable the readings.

[0070] See also Figure 4 As shown, it is a flow chart of determining whether the transmission stability of the current signal meets the standard according to an embodiment of the present invention.

[0071] Specifically, the current monitoring module determines whether the transmission stability of the current signal meets the standard based on the current standard deviation.

[0072] If the current standard deviation is greater than the preset current standard deviation of 0.5A, the current monitoring module determines that the transmission stability of the current signal does not meet the standard and starts the pressurized current stabilization module;

[0073] If the current standard deviation is less than or equal to the preset current standard deviation of 0.5A, the current monitoring module determines that the transmission stability of the current signal meets the standard.

[0074] Specifically, the present invention determines whether the transmission stability of the current signal meets the standard based on the current standard deviation. The larger the current standard deviation is, the greater the fluctuation of the current signal is, and the more unstable the transmission of the current signal is.

[0075] Specifically, the temperature monitoring module determines whether the temperature fluctuation trend meets the standard based on the temperature change rate.

[0076] If the temperature change rate is greater than the preset temperature change rate of 3°C / min, the temperature monitoring module determines that the temperature fluctuation trend does not meet the standard and starts the filtering and stabilizing current module;

[0077] If the temperature change rate is less than or equal to the preset temperature change rate of 3° C. / min, the temperature monitoring module determines that the temperature fluctuation trend meets the standard.

[0078] Specifically, the present invention starts the pressurized current stabilization module based on the low reading accuracy caused by unstable current signal transmission, and determines the temperature fluctuation trend based on the temperature change rate to determine the reading accuracy of the temperature and pressure instrument. If the reading accuracy still does not meet the standard, the filtering current stabilization module is started to further stabilize the current signal, thereby improving the monitoring accuracy of the reading and improving the reliability and accuracy of the reading.

[0079] Specifically, the temperature monitoring module determines to adjust the capacitance of the filtering and current stabilizing module, or adjusts the voltage of the pressurizing and current stabilizing module based on the temperature change rate difference.

[0080] If the temperature change rate difference is less than or equal to the preset temperature change rate difference of 2°C / min, the temperature monitoring module determines to adjust the voltage of the pressurized current stabilizing module;

[0081] If the temperature change rate difference is greater than the preset temperature change rate difference of 2° C. / min, the temperature monitoring module determines to adjust the capacitance of the filtering and current stabilizing module.

[0082] Specifically, the temperature monitoring module sets several adjustment modes for the capacitor of the filtering and current stabilizing module, and each adjustment mode has a different adjustment range for the capacitor of the filtering and current stabilizing module.

[0083] Specifically, the temperature monitoring module records the difference percentage between the temperature change rate difference and the preset temperature change rate difference as the first difference percentage.

[0084] If the first difference percentage is greater than the preset first difference percentage, the temperature monitoring module uses a first capacitance adjustment coefficient of 1.2 to adjust the capacitance of the filtering and current stabilizing module;

[0085] If the first difference is less than or equal to the preset first difference percentage, the temperature monitoring module uses a second capacitance adjustment coefficient of 1.1 to adjust the capacitance of the filtering and current stabilizing module.

[0086] Specifically, the temperature monitoring module sets several adjustment modes for the voltage of the pressurized current stabilizing module, and each adjustment mode has a different adjustment range for the voltage of the pressurized current stabilizing module.

[0087] Specifically, the temperature monitoring module records the difference percentage between the preset temperature change rate difference and the temperature change rate difference as the second difference percentage.

[0088] If the second difference percentage is greater than the preset second difference percentage, the temperature monitoring module uses the first voltage adjustment coefficient 1.1 to adjust the voltage of the pressurized current stabilizing module;

[0089] If the second difference percentage is less than or equal to the preset second difference percentage, the temperature monitoring module uses a second voltage adjustment coefficient of 1.05 to adjust the voltage of the pressure-added current stabilization module.

[0090] Specifically, the present invention adjusts the voltage value or capacitance value of the pressure-boosting current stabilizing module or the filtering current stabilizing module in response to the situation where the current signal transmission is still unstable after the filtering current stabilizing module is started, and sets several adjustment methods for the voltage value or capacitance value according to the temperature change rate difference, thereby improving the monitoring accuracy of the readings and improving the reliability and accuracy of the readings.

[0091] Specifically, under the condition that it is determined that the temperature measurement performance of the thermometer and pressure gauge meets the standard, the temperature monitoring module determines whether to start the temperature compensation module based on the ambient temperature change value of the thermometer and pressure gauge, and starts the temperature compensation module under the condition that the ambient temperature change value is greater than the preset ambient temperature change value of 5°C.

[0092] Specifically, the temperature compensation module calculates the compensation value using the following formula:

[0093]

[0094] Wherein, R represents the compensation value, R0 represents the resistance value measured when temperature compensation is not performed, T represents the operating temperature of the temperature and pressure instrument, T0 represents the temperature of a known reference point, and k represents the slope of the change of the resistance of the thermistor with temperature.

[0095] Specifically, under the condition that the temperature measurement performance of the thermobarometer meets the standard, the present invention determines whether to start the temperature compensation module based on the ambient temperature change value of the thermobarometer. Excessive temperature change will have a greater impact on the temperature measurement accuracy of the thermobarometer, resulting in low reading accuracy. The compensation value is calculated based on the operating temperature of the thermobarometer, which further improves the monitoring accuracy of the readings and improves the reliability and accuracy of the readings.

[0096] See also Figure 2 As shown, it is a structural block diagram of the intelligent handheld temperature and pressure instrument according to an embodiment of the present invention.

[0097] The present invention also provides an intelligent handheld temperature and pressure instrument, comprising:

[0098] Frequency monitoring module, used to monitor the temperature fluctuation frequency to determine whether the temperature measurement performance of the temperature and pressure instrument meets the standards;

[0099] A current monitoring module, which is connected to the frequency monitoring module, is used to monitor the current standard deviation to determine whether the transmission stability of the current signal meets the standard and start the pressurized current stabilization module under the condition that the transmission stability of the current signal does not meet the standard;

[0100] A pressurized current stabilizing module, which is connected to the current monitoring module and is used to stabilize the current by pressurizing;

[0101] A filtering and current stabilizing module, which is connected to the current monitoring module and is used to stabilize the current by filtering;

[0102] A temperature monitoring module is connected to the pressurizing and current stabilizing module and the filtering and current stabilizing module, and is used to determine whether the temperature fluctuation trend meets the standard based on the temperature change rate, and to determine to adjust the filtering and current stabilizing module or the pressurizing and current stabilizing module based on the temperature change rate difference, and to calculate the compensation value based on the working temperature of the temperature and pressure instrument and add it to the output signal of the temperature and pressure instrument.

[0103] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A temperature measurement and control method for an intelligent handheld temperature and pressure instrument, characterized in that: include: The frequency monitoring module receives the start signal and determines whether the temperature measurement performance of the temperature and pressure instrument meets the standard based on the temperature fluctuation frequency; Under the condition that the temperature measurement performance of the temperature and pressure instrument does not meet the standard, the current monitoring module determines whether the transmission stability of the current signal meets the standard based on the current standard deviation, and starts the pressurization and current stabilization module under the condition that the transmission stability of the current signal does not meet the standard; Under the condition that the pressurized current stabilizing module is started, the temperature monitoring module determines whether the temperature fluctuation trend meets the standard based on the temperature change rate, and the temperature monitoring module starts the filtering current stabilizing module under the condition that the temperature fluctuation trend does not meet the standard; Under the condition that the filtering and current stabilizing module is started, the temperature monitoring module determines whether the temperature fluctuation trend meets the standard based on the temperature change rate, and the temperature monitoring module determines to adjust the capacitance of the filtering and current stabilizing module or adjust the voltage of the pressurizing and current stabilizing module based on the temperature change rate difference; Under the condition that the temperature measurement performance of the thermometer and pressure gauge meets the standard, the temperature monitoring module determines whether to start the temperature compensation module based on the ambient temperature change value of the thermometer and pressure gauge, and the temperature compensation module calculates the compensation value based on the working temperature and adds it to the output signal of the thermometer and pressure gauge, wherein the compensation value is a correction amount for the resistance value.

2. The temperature measurement and control method of the intelligent handheld temperature and pressure instrument according to claim 1 is characterized in that: The frequency monitoring module determines whether the temperature measurement performance of the temperature and pressure instrument meets the standard based on the temperature fluctuation frequency, including: If the temperature fluctuation frequency is greater than the preset temperature fluctuation frequency, the frequency monitoring module determines that the temperature measurement performance of the temperature and pressure instrument does not meet the standard; If the temperature fluctuation frequency is less than or equal to the preset temperature fluctuation frequency, the frequency monitoring module determines that the temperature measurement performance of the temperature and pressure instrument meets the standard.

3. The temperature measurement and control method of the intelligent handheld temperature and pressure instrument according to claim 2 is characterized in that: The current monitoring module determines whether the transmission stability of the current signal meets the standard based on the current standard deviation. If the current standard deviation is greater than the preset current standard deviation, the current monitoring module determines that the transmission stability of the current signal does not meet the standard and starts the pressurized current stabilization module; If the current standard deviation is less than or equal to the preset current standard deviation, the current monitoring module determines that the transmission stability of the current signal meets the standard.

4. The temperature measurement and control method of the intelligent handheld temperature and pressure instrument according to claim 3 is characterized in that: The temperature monitoring module determines whether the temperature fluctuation trend meets the standard based on the temperature change rate. If the temperature change rate is greater than the preset temperature change rate, the temperature monitoring module determines that the temperature fluctuation trend does not meet the standard and starts the filtering and current stabilization module; If the temperature change rate is less than or equal to the preset temperature change rate, the temperature monitoring module determines that the temperature fluctuation trend meets the standard.

5. The temperature measurement and control method of the intelligent handheld temperature and pressure instrument according to claim 4 is characterized in that: The temperature monitoring module determines to adjust the capacitance of the filtering and current stabilizing module or adjust the voltage of the pressurizing and current stabilizing module based on the temperature change rate difference. If the temperature change rate difference is less than or equal to a preset temperature change rate difference, the temperature monitoring module determines to adjust the voltage of the pressurized current stabilizing module; If the temperature change rate difference is greater than the preset temperature change rate difference, the temperature monitoring module determines to adjust the capacitance of the filtering and current stabilization module.

6. The temperature measurement and control method of the intelligent handheld temperature and pressure instrument according to claim 5 is characterized in that: The temperature monitoring module sets several adjustment modes for the capacitor of the filtering and current stabilizing module, and each adjustment mode has a different adjustment range for the capacitor of the filtering and current stabilizing module.

7. The temperature measurement and control method of the intelligent handheld temperature and pressure instrument according to claim 5 is characterized in that: The temperature monitoring module sets several adjustment modes for the voltage of the pressurized current stabilizing module, and each adjustment mode has a different adjustment range for the voltage of the pressurized current stabilizing module.

8. The temperature measurement and control method of the intelligent handheld temperature and pressure instrument according to claim 7 is characterized in that: Under the condition that the temperature measurement performance of the thermometer and pressure gauge meets the standard, the temperature monitoring module determines whether to start the temperature compensation module based on the ambient temperature change value of the thermometer and pressure gauge, and starts the temperature compensation module under the condition that the ambient temperature change value is greater than a preset ambient temperature change value.

9. The temperature measurement and control method of the intelligent handheld temperature and pressure instrument according to claim 8, characterized in that: The temperature compensation module calculates the compensation value by the following formula: Wherein, R represents the compensation value, R0 represents the resistance value measured when temperature compensation is not performed, T represents the operating temperature of the temperature and pressure instrument, T0 represents the temperature of a known reference point, and k represents the slope of the change of the resistance of the thermistor with temperature.

10. An intelligent handheld temperature and pressure instrument using the method according to any one of claims 1 to 9, characterized in that: include: Frequency monitoring module, used to monitor the temperature fluctuation frequency to determine whether the temperature measurement performance of the temperature and pressure instrument meets the standards; A current monitoring module, which is connected to the frequency monitoring module, is used to monitor the current standard deviation to determine whether the transmission stability of the current signal meets the standard and start the pressurized current stabilization module under the condition that the transmission stability of the current signal does not meet the standard; A pressurized current stabilizing module, which is connected to the current monitoring module and is used to stabilize the current by pressurizing; A filtering and current stabilizing module, which is connected to the current monitoring module and is used to stabilize the current by filtering; A temperature monitoring module is connected to the pressurizing and current stabilizing module and the filtering and current stabilizing module, and is used to determine whether the temperature fluctuation trend meets the standard based on the temperature change rate, and to determine to adjust the filtering and current stabilizing module or the pressurizing and current stabilizing module based on the temperature change rate difference, and to calculate the compensation value based on the working temperature of the temperature and pressure instrument and add it to the output signal of the temperature and pressure instrument.

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