Brief introduction: Z9 / Z9 Plus bacteriostatic circle measuring instrument is launched by xunshu technology in 2018. It is an antibiotic titer analysis system with electronic data as the main body, meeting the requirements of the state food and drug administration on computer information system. The Z9 (basic) and Z9 Plus (high configuration) are equipped with the classic design of fully closed suspended dark field lighting, long-life LED structural light, and two sets of software, namely bacteriostatic circle measurement and antibiotic titer analysis. To meet high-end customers' demand for image details, the Z9 Plus adopts a 4/3-inch large-format array CMOS chip industrial camera for the first time, and a 16mm large-format high-definition fixed-focus lens, so as to present a sharp bacteriostat profile. Features: 1. Crystal sharp suspension type dark field lighting -- -- highlighting the bacteriostatic circle. The key to the automatic identification of bacteriostatic zone is to find the "boundary line" between the bacteriostatic transparent zone and the underlying bacteria. The suspended dark field system designed by xunshu patent USES LED lamp bead array with a service life of up to 100,000 hours and side backlight illumination, so that the transparent bacteriostatic circle forms a "black background" and forms a high contrast with the surrounding gray and white bacterial layer, greatly enhancing the contrast of the image. 2. High-definition imaging -- -- ensure repeated measurement accuracy. The precision of antibiotic titer analysis and repeated measurement depends on the picture quality of digital image. The Z9 Plus USES a large target surface prime lens with optical resolution up to 150LP/mm to convert the transparent and undistorted optical signal into a high-definition and exquisite antibacterial digital image through a 4/3-inch large face array CMOS chip camera. 3. Data security architecture design -- -- to achieve effective audit tracking. According to the requirements of the "computerized system" of the drug production quality management standard of the state food and drug administration, the "system, operation and review" structure is designed, with functions and authority respectively. At the same time, "tamper-proof technology" and "test flow intelligent reconstruction technology" are used to realize the audit tracking of electronic data. 4. Accurate measurement of bacteriostatic circle. The Szone multi-mode bacteriostatic circle measurement algorithm is suitable for different types of bacteriostatic circle measurement. When the bottom bacteria concentration is appropriate, the distribution is uniform, the bacteriostatic circle is transparent, and the edge is clear and round, the "automatic detection" algorithm can be used to achieve accurate edge detection based on contour. When the underlying bacteria were coated with cotton swabs, the edges of the bacteriostatic circle formed were irregular and often serrate. The "quasi-circle approximation" algorithm could be used to measure the contour of the bacteriostatic circle with closed circular approximation. 5. Bacteriostatic circle measurement with fuzzy boundary. When the boundary of the bacteriostatic sphere is a fuzzy transition zone, or multiple bacteriostatic spheres overlap in the plate, select the "manual detection" button. Click any of the three points on the edge of the bacteriostatic circle to form a circle of measurement. Technical parameters: Lighting system 1. The light source visible light: high-brightness tricolor LED structural light with adjustable brightness and color temperature 254nm uv: used for cavity disinfection (special for high matching) 2. Light path and lighting control fully enclosed black box: eliminates ambient stray light interference , light source: scenario 360 ° flexible shadowless light illumination lower light source: crystal sharp suspended dark field lighting upper light, lower light, double light, uv, free switching adjustable color temperature (3500k-8500k), adjustable light intensity Digital imaging Hd industrial prime lens: Z9 (basic) : 5 million pixels high definition camera, resolution 150 lp/mm Z9 Plus (matches) : 16 mm large target surface Gao Qingding focal lens, resolution 150 lp/mm Image sensor: Z9 (basic) : 1/2 inch high pixel 16 million CMOS, true color Z9 Plus (matches) : four inches large plane array CMOS camera, 16 million pixels Bacteriostatic community analysis module 1. Multi-mode measurement technology of Szone bacteriostatic zone automatic detection: precise edge detection based on the contour of bacteriostasis circle, suitable for clear edge and round bacteriostasis circle quasi-circular approximation: a circular fitting approximation based on the contour of the bacteriostasis circle, suitable for the cracked edge and non-standard circular bacteriostasis manual detection: click the mouse to form a circle at three points on the edge of the bacteriostatic circle, which is suitable for the bacteriostatic circle with fuzzy edges 2. Determination of antibiotic titer one-dose titer assay: suitable for two-dose assay and three-dose assay assay of the us pharmacopoeia and combined calculation: suitable for Chinese pharmacopoeia 2015 edition repetitive self-test: relative error 0.01%, repeated measurement accuracy 0.002mm homogeneity self-test: relative error 0.1% relative error of repeated valence measurement 0.3% inter-station measurement difference 0.2% 3. Calibration and edge detection default calibration: set when the instrument leaves the factory detection and correction of bacteriostatic circle edge: it is suitable for correcting the bacteriostatic circle with fuzzy edges in the case of high magnification 4. Auxiliary functions image adjustment: grayscale and negative phase diagram conversion; RGB component adjustment image enhancement: image adaptive enhancement, sharp edge of colony, flat background image filtering: image high-pass filtering, low-pass filtering, gaussian filtering, median filtering, queue filtering edge detection: Sobel detection of bacterial colonies, Robert detection, Laplace detection, and vertical - horizontal detection morphological operations: corrosion, expansion, open and closed operations text embedding: Chinese and English text input, font size, color adjustable graphic embedding: drawing and embedding of lines, rectangles, circles and arbitrary polygons
Brief introduction: Z9 / Z9 Plus bacteriostatic circle measuring instrument is launched by xunshu technology in 2018. It is an antibiotic titer analysis system with electronic data as the main body, meeting the requirements of the state food and drug administration on computer information system. The Z9 (basic) and Z9 Plus (high configuration) are equipped with the classic design of fully closed suspended dark field lighting, long-life LED structural light, and two sets of software, namely bacteriostatic circle measurement and antibiotic titer analysis. To meet high-end customers' demand for image details, the Z9 Plus adopts a 4/3-inch large-format array CMOS chip industrial camera for the first time, and a 16mm large-format high-definition fixed-focus lens, so as to present a sharp bacteriostat profile.
