1. 1 instrument reception
Complete the receipt and registration of basic information of inspection instruments. The contents of registration include submitting company information, receiving company information, basic instrument information, opinions, etc. Inspection unit information includes unit name, address, contact telephone number, inspector and inspection time. The information of the receiving company includes the company name, address, contact telephone number, recipient and scheduled receiving time. The basic information of the instrument includes instrument type, manufacturer, model, number, quantity, name and quantity of accessories, etc.
1.2 instrument verification
Complete the inspection and judgment of seven kinds of multilevel instruments, such as rangefinder (including handheld), total station, theodolite, level, GPS receiver, flatbed instrument and steel tape measure. According to the requirements of "Verification Regulation of National Metrology Standards", the detection item of rangefinder is 16, which is divided into three levels according to the nominal accuracy; Total station detects 2 1 item, which is divided into three levels according to the nominal accuracy; The theodolite test item is 13, which is divided into four levels according to the nominal accuracy; The grade detection item is 13, which is divided into three grades according to the nominal accuracy; The detection item of GPS receiver is 10, which is divided into three grades according to the nominal accuracy; There are 10 items detected by flat-panel instruments, which are divided into two grades according to the nominal accuracy; There are two inspection items of steel tape measure, which are divided into two grades according to the nominal accuracy. In the testing process of the above seven kinds of multistage instruments, the tolerances from appearance to performance standard indexes are all over 200, the editing and design are controlled accurately and effectively item by item, all indexes can be displayed in time, and the verification data and results can be automatically saved.
1.3 Print the sending and receiving information and verification voucher.
Complete the printing of instrument receiving information, sending information and verification certificate. The information sent and received by the instrument is the main evidence for the instrument handover between the verification unit and the inspection unit. Verification certificate (certificate of conformity or notice of disqualification) and verification data are submitted to the inspection unit as instrument verification results. The design and layout specification of the verification certificate should be strictly implemented in accordance with the regulations, and strive to be neat and beautiful.
1.4 query statistics
Complete the inquiry and statistics of instrument verification information. You can query by company name, verification time, verification conclusion or instrument manufacturer, model and serial number, or by single or multiple conditions. It can summarize and count the number of instruments verified in a certain period of time or the number of instruments whose verification conclusion is qualified (or unqualified). The methods are diverse, fast and convenient. Whether it is the verification unit, the inspection unit or the relevant regulatory authorities, you can inquire about the inspection instruments at any time.
1.5 timeout alarm
Give an alarm display to the instruments that have exceeded the validity period of verification, so that the relevant regulatory authorities and instrument verification units can find out which instruments have exceeded the validity period in time, so as to inform the instrument units to send them for inspection in time.
1.6 system maintenance
Complete the import, export and storage of system data to avoid data loss caused by possible computer failures or human operation errors.
2 system characteristics
2. 1 Friendly interface and simple operation.
The controls of the system interface can be seen in general software, and all of them have operation tips. With a little training, personnel can learn to apply the system.
2.2 The system has a high degree of automation
In the verification of each module and project, the system automatically displays or brings in some data as much as possible, which provides the greatest convenience for the verification personnel. For example, if you enter the print module, you can display the recently verified instrument results. For another example, when the observed values are input in the instrument constant and comprehensive precision module of the range finder, the first three or four digits of the baseline values of each section are automatically brought in.
2.3 Error checking of effectiveness
The system automatically checks the data validity of each data input. If a data or a group of data is found to be input incorrectly during the inspection, the user can be prompted to re-enter the data and stop the cursor at the position of the wrong data.
2.4 The system is practical.
The system contains the items, steps and methods that each instrument needs to be calibrated, and inspectors can easily master the calibration procedures of surveying and mapping instruments.
2.5 clear system structure
The verification of the whole system is completed according to the workflow of instrument verification.
2.6 the system has good scalability.
The system adopts modular design idea, which makes it very easy to upgrade and expand the system in the future.
3 Application situation
After the system was made, it was accepted and appraised by the expert group of the Provincial Bureau of Surveying and Mapping Geographic Information, and it was agreed that the comprehensive performance index of the system reached the advanced level of domestic peers. Now it is officially put into use by Fujian Surveying and Mapping Metrology Verification Station. Practice has proved that the system has perfect functions, simple operation and strong practicability, which greatly improves the efficiency of surveying and mapping instrument verification.
4 system development prospects
According to the investigation, many surveying and mapping instrument verification units are still in the manual stage, and similar software has not been developed and used, so the system has great promotion value in the peers. Although the system has well realized some functions of surveying and mapping instrument verification, with the continuous development of science and technology, the types of surveying and mapping instruments have gradually increased, and the means of verifying instruments have also been continuously improved. Therefore, the system still has some functions that need to be further improved and perfected to meet the development needs of instrument verification.
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