Some standard content:
The National Metrology Verification Standard of the People's Republic of China JJG 966-2001
Hand-held Laser Distance Meter
Hand-held Laser Distance Meter2001—06-05 Issued
2001-10→01 Implementation
The General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Issued JK;s66—2
Verification Regulation for Hand-held Laser Distance Meter
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Hanf-heldLaserDistanceMeter
JJG966—2001
This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China on June 5, 2001, and came into effect on October 1, 2001.
Responsible unit: National Technical Committee for Geometric Measurement and Angle Measurement Drafting unit: Henan Institute of Metrology and Testing Henan Surveying and Mapping Product Quality Supervision and Inspection Station
Surveying and Mapping College of PLA Information University
This regulation is entrusted to the National Technical Committee for Geometric Measurement and Angle Measurement to be responsible for the interpretation of the main drafters of this regulation ：
Zhang Weidong
Wang Dongmei
(Henan Metrology and Testing Institute)
(Henan Metrology Product Quality Supervision and Inspection Station) (School of Surveying and Mapping, Jiefang University of Information Engineering) 3
References·
Metrological performance requirements
General technical requirements
Measurement certification control
Type verification: prototype test
Verification items
Verification method
Verification information processing
Verification period·
Appendix A: Examples of measurement requirements
JJG 966
Appendix E Verification Certificate and Verification Nonconformity Notice Section 1?
(2)
.it: 966-21
Verification Procedure for Handheld Laser Rangefinders
This procedure is applicable to the modification and appraisal, prototype test, initial verification, follow-up and in-use inspection of handheld laser rangefinders (referred to as rangefinders) with a range variation of not more than 5mm. References
References in the column below:
GRT14267—1993 Short-range photoelectric ratio transmitter
IEC825-1:1093 Radiation safety of optical transmission products"IEC529—1999 Instrument enclosure protection mark
JIF105-1950 General specification for measuring instrument designationJJFJ059—1999 Uncertainty evaluation indicator"F1001-1999 8 General metrological terms and definitions When using this regulation alone, the valid versions of the cited documents shall be used: 3 Overview
The optical rangefinder is a kind of Huaguang Kaidian electro-optical rangefinder, which is characterized by natural point and surface radiation measurement, and can accurately measure short-range distances using a conducting laser (view article 1). It is widely used in construction, installation, real estate surveying and mapping, etc. It can be divided into level 1 and level 2, 0o0.o
Figure! About the external appearance of the measuring instrument
4 Metrological performance requirements
4.1 Voltage change measurement time
Within the working voltage range specified by the measuring instrument, the maximum value of the voltage change caused by the measuring instrument shall not exceed the value specified in the product specification
42 The position error of the measuring reference surface of the measuring instrument front plate is the same as that of the measuring base section. The difference between the two measured values and the actual distance between the measured values before and after the measurement shall not exceed 011
4.3 Single-item positive measurement standard--effective seat
JIC966-Z001
The maximum value of the difference between the positive and negative measured values is the maximum value of the difference between the positive and negative measured values 4.4: Influence of temperature widening on striking distance Before the skin end detection, the temperature can be within the medical range. Although the measuring period is greater than m, the change of quality will cause the device indication value to be amplified and should meet the requirements of the whole table. 4.: Measurement repeatability The repeatability of the measuring instrument shall be in accordance with the requirements of the table 1. The standard deviation of the measuring instrument shall be less than 6%. The formula includes: ap: measurement standard (68% subject to research), mm: fixed error, ari; b: specific error coefficient, mmrm/n-; detection distance height: tnn.
The allowable deviation of the distance measurement calculated to 00 should meet the requirements of Table 1.
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This" receiver is originally equipped with a broken test vehicle: Under the condition that the measurement standard meets the requirements of 4.6, the instrument measurement range is within the range specified by the manufacturer. 5 General technical requirements
The instrument should be free of rust, scratches, bubbles, pitting and other defects: The optical parts of the instrument do not need to be repaired, and the film should not be damaged. There should be no paint peeling and other defects on the surface. The above-mentioned false instruments are allowed to be connected without affecting the previous measurement accuracy. 5.2 The display should be clear and smooth, and the film should remain stable. 5.3 The instrument should be marked with the manufacturer or factory mark, model, laser warning mark and instrument protection level of the shell. 5.4 The operation points of the instrument and the connection parts should be identified, and all operating functions should be operated correctly. 6 Measuring instrument control
Measuring instrument control includes type identification, prototype test, initial verification, subsequent verification and in-use inspection. 6.1 Identification and sample testing
All types of handheld laser measuring instruments newly developed and manufactured in China are subject to finalization and prototype testing, and the approved types shall not be modified or supplemented without technical approval. 6.1.2 Technical documents for finalization and machine testing The technical content should include [1] Design tasks 5; (2) Structural dimensions and drawings; (3) Reliability design and prediction; (4) Technical standards and inspection methods; (5) Technical report (including the inspection report of the test conducted by the relevant unit); (6) Instructions for use in Chinese:
6.1.3 Finalization and identification, prototype testing and sample extraction method 6.1.3! In addition to the initial verification specified in this regulation (see Table 3), the identification and prototype tests should also include tests on the laser safety protection, water resistance, operating temperature range and reliability of the instrument, as well as the temporary storage, continuous impact and drop requirements of the rangefinder. The tests shall be carried out in accordance with the requirements and methods of 1EC825-1:1993 "Laser Safety Protection Standard for Laser Products", the water resistance shall be carried out in accordance with the requirements and methods of 1EC529-1999 "Electrical Instrument Protection Standard for Housings", the operating temperature range and reliability of the instrument, as well as the transportation, storage, continuous impact and drop requirements of the rangefinder shall be tested in accordance with GB. T14267-199.3 "Short-range photoelectric rangefinder" requirements and methods: 6. ".3.2 Final identification, the sample of the machine test is randomly selected from the products of the factory inspection, and the photography adopts (2825 one-time sampling inspection:
5.1.3.3 Finalization identification, prototype test items! Grouping, discrimination level): Unqualified quality level RQL sampling plan shall comply with the provisions of Table 2
Not including qualified categories
Technical terms
Product technology must be completed
Optical safety protection
General batch technical requirements
One with a plan:
The following will be the energy efficiency sampling plan
.A.-2. R.
JJC 966·-2001
.1.4 After the application of the finalization of the new series of products, the prototype test: select one-third of the representative specifications from each product plan for testing, and the new product test specifications are confirmed. The finalization is determined, and the technical organization for the prototype test is determined according to the technical documents provided by the unit. 6.1.3.5 Other requirements for type evaluation shall be in accordance with JJF1015-1990 Measuring Instruments and the General Specifications for Finalization 6.2 Verification Conditions
6.2.1 Environmental Conditions
6.2.1.1 The verification shall be carried out in an environment with a temperature of 5-25 and an air pressure of (1013.25+35)h2. The temperature change shall not exceed 1% per hour.
6.2.1.2 During the verification process, the distance measuring instrument shall not be exposed to strong electric fields, obstacles, and light objects. 6.2.2.2.1 The temperature control range of the high and low temperature test box for calibration should be within -10～-50℃. 6.2.2.2 The relative uncertainty of the two-section base used for calibration of the measuring constant should not be less than 3×10-% (confidence probability is 99.7%). The height between stations should not be greater than 0.2m. 6.2.2.3 The relative uncertainty of the 50 steel ruler used for calibration of the additive constant and the measuring standard should not be less than 5×10-% (confidence probability is 99.7%). The straightness of the calibration platform for the baseline should not be less than +2.5mm within the range of 50m. 6.3.3. The required items and calibration equipment are listed in Table 3.
Inspection Institute
Inspection Items
External performance is reliable
This is the reference level recommended by the surveyor
This radiometer is the consistency of the measured value
The impact of changes in traditional Chinese medicine on the measurement
The impact of changes in the measurement on the measurement
Measurement policy decline
Additional data
Electric Standard Signal Drawing Joint Evaluation Meeting|| tt||Yingcisi
Table core product length fixed, "
Lake caliper
Fengyi calibration one
DC pass steady power supply
Special experience temperature loss receipt sticky (room)
50 saw steel:
[UDm length H bag
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And the chain margin fixed
Use secret test
6.4 Verification method
6.4.1 External quality and functionwwW.bzxz.Net
Visual inspection and test
.K:966-2
6.1.2 Position deviation of front and rear measuring surfaces of the instrument
6.4.2.1 Take the front end of the instrument as the measuring end, and use a vernier caliper with a graduation value of 0.02mm to measure the actual length of the instrument at 6 points distributed on its surface. The actual length of the level value is used as the actual distance between the front and rear reference surfaces.
6.4.2.2 At both ends of the distance meter with a length greater than 3Ⅲ, install the distance meter reflector respectively, and use different instrument measuring single reference surfaces as the reference surface for single measurement. Measure the distance 5 times for each reference, and take the half-mean as the observation value. The difference between the observed value of the reference surface before and after the observation and the actual distance between the two surfaces should meet the requirements of Class A2. 6.4.3 Modification of the measured values of the front and back sides of the reflecting plate. After placing a distance meter and a reflector at both ends of the long charge at a distance of 20m1 respectively, the front and back sides of the reflecting plate are measured separately in a single measurement manner. Each reading is made 5 times and the average value is taken as the observed value of each reflector function. Then the difference between the observed distance values of the front and back sides is calculated. The measuring instrument shall not be adjusted during the distance measurement. The position and state of the reflecting plate shall be kept unchanged when the reflecting plate is flipped over for measurement.
Then respectively at the distance of about 25m and m, operate according to the corresponding requirements, the maximum absolute value of the difference between the distance values of the front and back sides of each section shall meet the requirements of 4.3 (see Appendix A Table A.1 for details) 6.4.4 Influence of voltage change on distance measurement
6.4.4, 1. Place the distance meter and the reflector at both ends of the distance meter with a length of about 3m, and adjust the distance meter to aim at the reflector. Then use a high-current regulated power supply to directly supply the distance meter. 6.4.4.2 Adjust the voltage from low to high within 10% of the rated operating voltage of the instrument at an interval of 0.3V. Change the voltage stably for 5 times, and take the average value as the measured distance value at that voltage. Compare the measured distance values under different voltages with the values measured under the nominal operating voltage. The maximum difference shall meet the requirements of 4.1 (see Appendix 4 Table A.2 for details)
6.4.5 Effect of temperature change on distance measurement
6.4.5.1 Place the measured distance meter in a low temperature constant temperature test box (air) with a heat-insulated glass window, align its front end with the openable glass window and fix it, then install a reflector at the front end of the instrument with a length of 60m. 6.4.5.2 Within the range of the range meter's ambient temperature, heat the high and low temperature test box to a given limit temperature at a rate of no more than 1℃/min, keep the temperature constant for 9.55, then measure the range in a single measurement mode and read 4 values: take the average value as the observed value: 6.4.5.3 Then change the temperature change measurement point to 15% of the limit temperature, measure the distance and read the value according to the method in 6.4.5.2.
6.4.5.4 Set each! The maximum change should be in accordance with the requirements of 4.4 (see Appendix A.3 for examples: 6.4.6.6.4.6.6.6.6.6.6.6.6.6.6.6.6.6.6.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7.7. -)(-1:
Wherein: — measurement repeatability standard error, 1
a, — the first, reading, m;
— the half mean of the second determination, m
the number of continuous distance measurements.
6.4.7 Addition rate
.4.7.1 Focus on the length of 40 days, the number of groups is not less than 1. The line selection and calibration is required. The length of each combined section of the strain distance measurement line is several times of half the wavelength of the wave. The total length is set and the calibration is arranged: the high element is used as the base at both ends of the home to use the matching song, and the whole holiday is made into a single model with the base. , after the near and far measurements are taken, the medical product is called the dynamic radiation garbage measurement of each combination section: the value of each current measurement speed is taken as the standard measurement value, 4, 7.2 in the case of correction of the period of measurement value, the difference is reduced, and it is compared with the combination of the degree of the benzene line, according to the formula () to calculate the width of the number of lines (see Figure A): (3)
but the effective K measurement main flow deviation is
Wu: the difference between the combined reverse baseline D observation, mm: the number of segments on the edge of the group:
h.4.8 measurement standard Sa compilation difference training evaluation
side distance standard beautiful comprehensive evaluation case is divided into two cases with and without radiation effect. There are some shooting distance measurement test difference drawing combined evaluation home quantity goods with non-leather super measurement type three standard time to measure the distance measurement accuracy deviation complex total progress, its mystery wrong diagram medicine determination false device qualified and small fan main safety index large reflection version standard again close integration with the army finger with natural engraved body and for the measurement of the British door, that is! The ball is not a technical board installed in the device surface period with the degree of reflection when the system teaching difference is large, for the measurement that is, the instrument measurement standard agent needs a comprehensive reading, some root help users some requirements detection, only give the measurement data exhaustion f
J.IG966—2
6.1.8.1, there is a different version of the distance measurement control push according to the difference comprehensive evaluation delay emergency, select the basis cutting dig 6, +, 7.1 method Escape from the record, the observed value L after the correction of the whole line value obtained by the observation, to collect the family social regression analysis method to establish the maintenance formula (6;, through the egg calculation I (6) method, according to I) and the current () request! Xie coffee standard breath related expression formula: Qiao and Qiao: then mountain road and 0 town according to the formula! ) The obtained 5: into 4 in line with the request (example is Appendix A Table Ah).
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a-fixed error, nm
s..[error device amount, mrn
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After the instrument Huichang adjustment of the observed value,
level number of retreat.
6.4.82 The range finding standard without reflection core should be classified as (h)
6,4.8,2 [the baseline is set to be no less than 10 sections, and its length is within 30 meters of the baseline. The line is allowed to pass through the calibration: first, the training mark provided by the Sichuan location is used as the basis, and the compensation is set: then the single measurement formula is used for the section that has not been measured. Each measurement is read 5 times and the half-average is taken as the measurement value. 64,8.2 After the constant is adjusted, the higher the standard value is, the higher the standard value is according to 6.4.3.1 The number of the method for measuring the distance between the element and the time plate is
6+) Hong Shengqi
54" fast distance measurement only and the observation of the special reflection should be generated at the two ends of the corresponding measurement line of the maximum measurement range, and the time version of the inquiry should be adjusted to allow the continental distance: the total measurement policy is exempted, and the correction number is used for all measurement results. The calculation formula (9) is calculated, and the maximum measurement range should meet the requirements of the annual measurement:>E
Where:
a certain line value, m
JJG 966—2001
4—the measurement value after adding the correction number, m is the number of times:
6.4.4.2 According to the method of 6.4.9.1, the distance measurement is carried out on the shortest measurement range line of the instrument. After data processing, the distance measurement standard deviation of the shortest measurement range can meet the requirements of 4.6.5 Handling of verification results
Distance meters that meet the requirements of this regulation after verification shall be issued with a verification certificate (see Appendix 11 for the format of the internal page), and the grade shall be indicated in the certificate. Instruments that do not meet the requirements of this regulation shall be issued with a verification result notice, and the period of non-compliance shall be noted (see Appendix B.2 for the format of the internal page).
6.6 Verification period
The verification period of re-measurement shall be determined according to the usage situation, and shall not exceed 1 year.
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