30results about How to "Avoid inaccurate temperature measurement" patented technology

The invention relates to a heating control method of an electric kettle and an electric kettle for realizing the heating control method. By judging whether water is boiled according to whether time increment delta t corresponding to a raised unit value delta T of water temperature reaches the limit time increment delta t0 preset in a memory cell when water is heated for the first time, whether water is boiled can be accurately judged. Simultaneously, the invention also stores boiling temperature Tf detected during the boiling last time in the memory cell, as long as the real-time water temperature T reaches Tf when boiling next time, water is judged to be boiled, and the long-time judgment of water boiling is not required to be repeated, therefore, the boiling time is effectively saved. The method and the electric kettle can be used in areas with various sea level elevations, not only can accurately judge whether water is boiled to avoid potential safety hazards, such as heating without water, but also has the advantages of energy conservation and high temperature-controlling precision.

A glass plate tempering process control method. During the heating process of the heating furnace, the monitoring unit monitors the working parameters of the heating element in real time, and filters the working parameters of the heating element, and then transmits the filtered working parameters of the heating element to the control panel. unit, the control unit compares the received working parameters of the heating element with the set threshold value, when the working parameter of the heating element passes through the maximum value and reaches the set threshold value in the process of changing again, the control unit sends a signal to the drive mechanism command, the driving mechanism acts to directly send the glass plate into the heating furnace or send the glass plate into the heating furnace after a delay. The invention changes the traditional control method based on time, and can control the heating process of the heating furnace more scientifically and accurately.

The invention relates to a device for measuring the Seebeck coefficient of a material by a comparison method. The device includes a sample stage, a heating power source and a data acquisition device. The sample stage includes a clamp, the clamp includes a lower clamp and an upper clamp, and the sample includes a standard sample and a test sample. Both the standard sample and the test sample are clamped between the lower clamp and the upper clamp, and a heating rod is installed in the lower clamp. Through the comparison between the test sample and the standard sample, the method indirectly measures the Seebeck coefficient of the material, which is convenient for comparison with the direct measurement, and avoids the problem of inaccurate temperature measurement at both ends of the sample, which is the largest error source in the measurement of the Seebeck coefficient, and The system only needs to measure the potential difference between the two ends of the test sample and the standard sample, because there is no need to measure the temperature on both sides of the sample, which greatly reduces the signal leads in the system, making the system more simple and effective. The problem of thermocouple corrosion during testing.

The present invention is applicable to the technical field of wind tunnel test, and provides a method for correcting the surface temperature of a test model, comprising the following steps: obtaining the temperature value of each temperature measurement point, if the temperature factor of the temperature measurement point is not less than the preset parameter , the temperature measurement point is an invalid temperature measurement point; if the temperature factor of the temperature measurement point is less than the preset parameter, the temperature measurement point is an effective temperature measurement point; The degree of stability of the temperature value of the temperature measurement point: the temperature value of the reference temperature measurement point is used as the correction temperature of the failure temperature measurement point; the reference temperature measurement point is the relative distance from the failure temperature measurement point in the effective temperature measurement area For the same temperature measurement point, the relative distance is the distance between the temperature measurement point in the temperature measurement direction, the straight line where the temperature measurement direction is located, and the corner point of the leading edge line. The invention provides a method for correcting the surface temperature of a test model, which can accurately measure the surface temperature of an anti-icing component and improve the efficiency and accuracy of an anti-icing test.

A high-temperature vacuum sintering furnace with an automatic thermocouple plugging and unplugging device comprises a furnace body and the automatic thermocouple plugging and unplugging device arranged on the furnace body and located on an upper flange of the furnace body. The automatic thermocouple plugging and unplugging device comprises a connection flange, a supporting column, a support, a cylinder, a cylinder rod, a connection frame, a clamping block and a thermocouple. By means of the automatic thermocouple plugging and unplugging device, the problems that due to manual operation, the thermocouple is not plugged in place, and temperature measurement is inaccurate, or the thermocouple can not be unplugged in place, so that the thermocouple is damaged by a high temperature thermal field are solved. Moreover, the condition that the thermocouple is mechanically damaged when being manually plugged and unplugged is avoided.

The invention discloses a temperature sensor fixing device and a water heater. The temperature sensor fixing device includes a base with a box body, a chute is arranged on the box body, and a bracket detachably connected with the base, the bracket slides up and down along the chute through a spring located in the box body; The top is provided with a buckle for clamping the temperature sensor. Using the fixing device of the present invention to fix the temperature sensor is not only convenient for installation, but also can ensure the close contact between the temperature sensor and the component to be measured to realize accurate temperature measurement. The application of the fixing device in the water heater can improve the accurate and convenient temperature measurement of temperature measurement points such as the water heater liner.