ZT561C automatic pressure calibration table has the following advantages:
1. Auto-focusing system
(1) At present, all commercial electric lenses in the domestic and foreign markets are aimed at long-distance (1m ~ 5m) and low-pixel (less than 1 million) monitoring occasions, but there is no such macro (1cm) and high-pixel (5 million) for the verification industry. Therefore, our company independently designed and developed an electric lens with variable magnification and focal length, embedded with a micro-motor drive system, which fully realized the requirements of automatic verification on focal length and pixels.
(2) Integrated focusing motion mechanism (national patent technology)
Independent patent technology: a measuring instrument with automatic focusing shooting mechanism (patent number: ZL 213 2 6125.6).
Integrated focusing motion mechanism, the camera position is controlled by up-and-down and back-and-forth motion motors, and the focusing position is controlled by magnification motor and focal length motor, so as to realize the control of four degrees of freedom.
(3) Fully automatic focusing algorithm and focusing scheme
The automatic focusing system omits the steps of adjusting the up-and-down and left-and-right positions of each type of meter, and manually adjusting the aperture and lens. In the automatic focusing scheme, the focusing mechanism can automatically locate the appropriate shooting distance only by selecting the model of the watch; Then the image quality is analyzed by digital image intelligent algorithm to obtain the current imaging state, and the magnification motor and the focal length motor are controlled to locate the imaging position with the largest evaluation function value, that is, the focal length and magnification under the clearest image, so as to complete autofocus.
2. Numerical control pressure source (national patent technology)
(1) High-precision stepping motor pressurizing device and .5-level sensor are used for control, and the control pressure has high precision, for example, the 1MPa point can be controlled at 1 1±.5MPa.
(2) transformer oil is used as the pressure medium, and an oil-water isolator can be added to the barometer which is prohibited from oil.
(3) Self-regulating valve is adopted without manual fine adjustment. Patent technology of high-pressure pressure regulating valve and pressure verification device (patent number: ZL 212 2 327118.1)
3. Image recognition part
(1) Intelligent recognition of each scale line and pointer is adopted to completely solve the technical problems caused by uneven distribution of scale lines and uneven rotation centers of pointers.
(2) The method of identifying the geometric center line of the thicker pointer has high accuracy.
(3) For common pressure gauges, the recognition accuracy of each pressure point can reach 1/2 of the graduation value of the graduation line; for precision pressure gauges, when the graduation line reaches 3, the recognition accuracy is 1/1 of the graduation value, which is significantly better than the accuracy of reading the meter by human eyes.