5results about How to "Calibration method is simple" patented technology

The built-in heat source heat flow meter calibration device disclosed in the application comprises a heat preservation cylinder, a temperature measuring element and a stirring mechanism. The heat preservation cylinder comprises a containing cavity capable of containing liquid, and the built-in heat source heat flow meter can be inserted into the containing cavity. The temperature measuring element comprises a first temperature measuring element capable of measuring the temperature of the liquid and a second temperature measuring element capable of measuring the axial temperature gradient of the built-in heat source heat flow meter. The stirring mechanism is connected with the containing cavity. The built-in heat source heat flow meter calibration device disclosed in the application has simple structure and convenient operation. The heat preservation cylinder provides the containing cavity of the liquid. The built-in heat source of the built-in heat source heat flow meter heats the heat conductor, the heat conductor transmits heat to the liquid to make the liquid produce temperature rise, the heat flow density can be calculated by measuring the temperature rise of the liquid, the relationship between the heat flow density and the temperature gradient can be established by measuring the axial temperature gradient of the built-in heat source heat flow meter, and the calibration of the built-in heat source heat flow meter can be completed, and the calibration mode is simple.

This application relates to a battery testing system, which includes a testing device, a testing mechanism, and a testing section. The projection of the testing section along a first direction is located on the battery under test. The testing section is used to contact and form an electrical connection with the battery under test, and to collect current signals. The testing section is made of a conductive material with a light transmittance of T1, where T1 ≥ 75%. The technical solution provided by this application solves the problem of cumbersome methods for calibrating light intensity in batteries in related technologies.

This invention discloses a method for calibrating digital I / O channels of a semiconductor test equipment. The steps include: S1, grouping the digital I / O channels of the semiconductor test equipment into groups of at least three, and then using a first calibration board to test and solve the signal transmission and reception delays between the digital I / O channels in each group; S2, regrouping the digital I / O channels using an offset "1" method, and then using a second calibration board to test and solve the signal transmission and reception delays between the digital I / O channels in each newly grouped group; S3, constructing and solving the delay calculation expressions for each digital I / O channel in the transmission and reception directions; S4, using the delay values ​​obtained in step S3 as the basis for compensation to perform delay compensation on the corresponding digital I / O channels, thereby achieving calibration and alignment of each digital I / O channel. This invention solves the problem of signal asynchrony between digital I / O channels of the test equipment without increasing the design difficulty and manufacturing cost of the calibration board.

The invention relates to the technical field of liquidometer calibration, in particular to an atmospheric storage tank liquid level calibration method. Comprising the following steps: S1, carrying out initial calibration on a liquid level meter on an atmospheric storage tank, determining that the initial calibration of the liquid level meter is unqualified when any item in the initial calibration content is unqualified, and otherwise, determining that the initial calibration of the liquid level meter is qualified; the step S2 is carried out on qualified liquid level meters, and the step S3 is carried out on unqualified liquid level meters; s2, after the liquid level meter on the atmospheric storage tank is used for a set time, the liquid level meter is calibrated in use, the content of the calibration in use is the same as the content of the initial calibration in the step S1, if any one of the content of the calibration in use is unqualified, it is determined that the calibration of the liquid level meter in use is unqualified, and otherwise, it is determined that the calibration of the liquid level meter in use is qualified; s3, the unqualified liquid level meter is subjected to the step S3; s3, performing problem inspection on the liquid level meter; metering calibration of the installed and put-into-production liquid level meter is achieved.

The application relates to a fine tracking imaging coaxial conjugate optical reference calibration method, which comprises the following steps: adjusting a rotating table and a telescope barrel to rotate, recording the trajectory of visible guide light on an optical axis synchronous camera; calculating the center of the trajectory; taking the center of the trajectory as the center and taking the imaging distance corresponding to half the stroke of a quick reaction mirror on the optical axis synchronous camera as the radius to draw a circle on the optical axis synchronous camera; taking the center of the field of view of a visible light camera as a reference point O1 or taking the intersection of the line connecting the center of the field of view of the visible light camera and the center of the trajectory as the reference point O1; according to the reference point O1, the center of the field of view of the optical axis synchronous camera is drawn to the O1 point; the corresponding imaging position of the O1 point on the visible light camera is found out and recorded as an O2 point; the corresponding imaging position of the O2 point on an infrared camera is found out and recorded as an O3 point. The application does not need to rely on external equipment, the fine tracking calibration process is simple, the cost is low, the operation is convenient, and the target tracking point and the laser striking point can be ensured to be the same point.