Zero adjustment device for a pair of leveling staff

ZDS-2 Zero adjustment device for a pair of leveling staff mainly consists of a granite platform, a leveling staff placement component, a zero point base component, a linear sliding rail component, a composite microscope component, etc., equipped with a CCD image acquisition system, a measurement and control system, and software. During detection, an optical system is used to simultaneously image the same dividing lines on a pair of leveling staff arranged side by side in the composite microscope. The image processing calculates the position difference between the two reference stripe rows to achieve the detection of the zero point difference of a composite leveling staff. Solved the shortcomings of the current national verification regulations, such as complex operation, low detection efficiency, and possible measurement errors introduced by the level itself. The biggest advantage of this device is the zero point adjustment. According to current measurement standards, if the difference between the zero points of a pair of leveling rods exceeds the limit, it needs to be calibrated and closed before it can be used. The original detection method can only use progressive adjustment, and after adjustment, retest until the limit is reached. When using a combination type zero point difference detection device for leveling, the calibration result can be directly seen, and the calibration is completed in one go.

Main Function：

1. Two rows of barcodes with the same dividing line on a pair of staffs are clearly imaged in a combination microscope;

2. It has the advantages of strong scalability, high precision, simple operation, high efficiency, staff placement components, zero point base components, linear sliding rail components, imaging microscope components, integrated granite bed body, horizontal installation, cross-section, etc.

3. It can accurately detect the difference between the zero points of a pair of leveling staff, providing high-precision basic data for leveling measurement and ensuring the accuracy of the leveling staff in measurement.   

1. Image aiming measurement resolution of 0.1 μ m;

2. Equipped with 2m and 3m installation fixtures, capable of detecting and adjusting the unevenness of one staff at a time.

Applications：

Surveying and mapping industry: The Zero adjustment device for a pair of leveling staff can ensure the accuracy of the leveling staff, provide accurate basic data for geodetic surveying, and ensure the accuracy and reliability of the elevation control network. Drawing large-scale topographic maps and other topographic surveying work require high accuracy in leveling measurements. By using this calibration device, the difference in zero point deviation of the leveling staff can be accurately calibrated, making the elevation data obtained in topographic measurement more accurate and improving the quality of topographic map drawing.

In the field of construction engineering: it is necessary to accurately measure the position and elevation of the designed building on site during the construction process. The calibration device for the zero point difference of a pair of leveling staff in a composite image can ensure the accuracy of the leveling staff, enabling construction personnel to accurately determine the foundation elevation and floor elevation of the building, ensuring the structural safety and construction quality of the building. For important buildings such as high-rise buildings, large bridges, and dams, settlement observation is required during construction and use. Accurate calibration of the zero point difference of the leveling staff can improve the accuracy of settlement observation data, timely detect changes in building settlement, and provide guarantees for engineering safety.