JB/T 5233-1991 Air-cooled sliding vane air compressor for tank trucks
Some standard content:
Mechanical Industry Standard of the People's Republic of China
JB/T5233-91
General Technical Conditions for Electromagnetic Induction Digitizers Published on July 10, 1991
Ministry of Machinery and Electronics Industry
Implementation on July 1, 1992
Mechanical Industry Standard of the People's Republic of China
General Technical Conditions for Electromagnetic Induction Digitizers Subject Content and Scope of Application
JB/T5233--91
This standard specifies the technical requirements, test methods, inspection rules and packaging, transportation and other requirements for electromagnetic induction digitizers (hereinafter referred to as digitizers).
This standard applies to electromagnetic induction digitizers. 2
Referenced standards
ZBY306
ZBY320
3 Terminology
Uniform provisions for computer peripheral equipment interfaces
Technical requirements for computing station sites
Electronic measuring instruments
Limit values and test methods for radio interference of information technology equipment Electromagnetic compatibility test specifications for electronic measuring instruments Safety of data processing equipment
Format and size of mechanical drawing drawings
Guidelines for reliability verification tests and measurement tests (exponential distribution) for instruments and meters Packaging, storage and transportation graphic symbols
The following terms apply to this standard.
3.1 Digitizer
digitizer
A computer peripheral device that inputs graphic data, program language or symbols into a computer and can modify and process the data. 3.2 Point mode
pointmode
A working mode in which the cursor (or stylus) switch is turned on and one point is sampled at a time. 3.3 Continuous mode
streammode
A working mode in which points can be collected continuously regardless of the switch state of the cursor (or stylus). 3.4 Tracking mode
switch stream mode
A working mode in which points can be collected continuously when the cursor (or stylus) switch is turned on and points can be collected continuously when the switch is turned off. 3.5 Incremental mode
increment mode
A working mode in which the digitizer can output coordinate points according to the preset increment parameters when the cursor (or stylus) moves, regardless of the switch state of the cursor (or stylus).
3.6 Menu mode
menumode
Approved by the Ministry of Machinery and Electronics Industry on July 10, 1991 and implemented on July 1, 1992
A working mode in which functions are selected through menus. 3.7 Absolute coordinate mode
absolute coordinate mode
JB/T5238—91
Fixed origin coordinate mode: data acquisition mode with the origin (0, 0) of the working surface as the origin of the measurement coordinate (the value in brackets is the value displayed by the coordinate)
b. Floating origin coordinate mode: data acquisition mode with any point on the working surface as the origin of the measurement coordinate. Relative coordinate mode
relative coordinate mode
data acquisition mode in which the coordinates of the measured point are relative to the coordinates of the previous point. 3.9 Resolution
resolution
The minimum distance or displacement that can be distinguished within the effective format, expressed in mm. 3.10 Accuracy
accuraoy
The difference between the actual measured value and the measured value, also known as the maximum allowable error, expressed in mm. 3.11 Coordinate display
coordinate display
In the rectangular coordinate system, the digital display of the X and Y coordinate values of the measured point. Technical requirements
4.1 Climate and environmental conditions
4.1.1 Environmental conditions for use
The digitizer should work in the machine room, and its temperature and humidity requirements should be selected in accordance with the provisions of Chapter 6 of GB2887 (see Table 1). 4.1.2 Transportation and storage environmental conditions
The transportation and storage environmental conditions of the digitizer should select the values of Group I or Group 1 of the storage conditions in Table 1 of GB6587.1 (see Table 1). 4.2 Mechanical environmental conditions
The mechanical environmental conditions (vibration, impact, tilt and drop) of the digitizer should be selected from Group I in Table 1 of GB6587.1 or the relevant values of Group I (see Table 1)
Operation environment
Use environment
Operation environment
Use environment
23±2℃
40℃90%RH12h
45%~65%
40~60℃
15~30℃
50℃90%RH24h| |tt||40%~70%
Impact
Tilt fall
Frequency range
Drive vibration
Frequency sweep rate
Vibration point holding time
Resonance point
Double vibration amplitude
Working state,
According to the moving direction
Acceleration
Pulse duration
Number of impacts
Working state
Drop height angle
Number of falls
Working state|| tt||4.3 Electromagnetic compatibility
4.3.1 Radio interference limit
Bs523369.1
\Continued from the above table:
5~35~5Hz
Less than or equal to 1 octave/min
5~55~5Hz
1.59mm(5Hzf10Hz）
6±1m%
Working state
x，y,z
3-axis (through-surface) do 1 time each (typically 3 times) Non-working state||tt ||Quasi-positive strong wave
50mm*30
0.76mm(10Hzf≤25Hz)
0.19mm（25Hzf≤55H2)
294m/s
I1±1ms
6 planes, plane 3 times (18 times)
100mm or 45*
4 sides of the deer are dropped once (4 times) on the axis
The radio interference limit value of the digitizer shall comply with the provisions of Class B ITE in GB925.1. 4.3.2 Radiated sensitivity
The radiated sensitivity of the digitizer shall comply with the provisions of: GB.6833.5-. : 4.3.3 Conducted sensitivity
The conducted sensitivity of the digitizer shall comply with the provisions of GB6833.6. 4.4. Safety.
JB/T5233-91
General requirements for safety of digitizers shall comply with the provisions of GB4943. 4.4.1 Earth leakage current
The allowable value of earth leakage current of digitizers shall comply with the requirements of Article 5.2 of GB4943, and the specific value shall be specified by the product standard. 4.4.2 Dielectric strength
The applied voltage value of the electric strength of digitizers shall comply with the requirements of Article 5.3 of GB4943, and the specific value shall be specified by the product standard. 4.5 Product performance
4.5.1 Effective format
The effective format of digitizers shall preferably adopt the size of A0 to A4 specified in GB4457.1. 4.5.2 Resolution
The resolution of digitizers (usually 0.25 to 0.025 mm) shall be specified in the product standard, and specific inspection methods shall be proposed according to the different grades of products.
4.5.3 Accuracy
The accuracy level of the product should be selected from Table 2. Within the effective format of the digitizer, its maximum allowable deviation should not exceed the corresponding value specified in the table.
Accuracy
Reported maximum allowable deviation (mm)
The values in brackets are non-preferred levels.
4.5.4 Working mode
The working modes of the digitizer include: point mode, continuous mode, tracking mode, incremental mode, menu mode, etc. The product should have at least one of the above working modes.
4.5.5 Coordinate mode
The digitizer should have absolute coordinate mode and relative coordinate mode. 4.5.6 Output coding
The digitizer should have ASCII code, BCD code and binary code. 4.5.7 Interface
Digitizers should preferably use:
a. Serial interface: JC-1 (ZBY306.1, refer to RS-232C), or b. Parallel interface: JB-1 (ZBY306.2, i.e. CENTRONICS). 4.5.8 Transmission rate
The digitizer should have 300, 600, 1200, 2400, 4800, 9600b/s and other rates, and can be selected. 4.6 Power adaptability
AC 220±22, 50+1Hz
4.7 Reliability
The reliability of the digitizer is measured by MTBF. The index should be clearly specified in the product standard. The unacceptable MTBF value m; should not be less than 3000h.
4.8 Appearance and structure
The surface of the digitizer should be free of obvious dents, scratches, cracks, deformations, etc. The surface coating should not bubble, crack or fall off, and the metal parts should not be rusted or have other mechanical damage. JB/T5233-91
Switches and operating parts should be flexible and reliable, and parts and components should not be loose. The words, numbers and symbols on the panel and nameplate should be straight and clear. 5 Test methods
a. Except for the environmental condition test and reliability test, all other tests are carried out under the following normal test atmosphere: ambient temperature; 15~35℃
Relative humidity: 45%~75%
Atmospheric pressure: 86~106kPa
b. Except for the power adaptability test, all other tests are carried out under the following power supply conditions: AC 220V, 50Hz.
5.1 Environmental condition test
5.1.1 Temperature test
This test should be carried out in accordance with the test method specified in GB6587.2--86 "Temperature test of electronic measuring instruments". The upper and lower limit temperatures should be selected in Table 1, and the specific methods should be specified in the product standards. When doing the lower limit test of transportation and storage temperature, in order to avoid icing and condensation, it is allowed to seal the test sample with a plastic bag, and a moisture absorbent can be placed in the sealing sleeve. Other tests The test product should not be packed with any protective packaging. 5.1.2 Humidity test
This test shall be carried out in accordance with the test method specified in GB6587.3-86 "Electronic measuring instrument humidity test", the temperature and humidity range shall be selected in Table 1, and the specific method shall be specified in the product standard. 5.1.3 Vibration test
The water test shall be carried out in accordance with the test method specified in GB6587.4-86 "Electronic measuring instrument vibration test", the test conditions shall be selected in Table 1, and the specific method shall be specified in the product standard. 5.1.4 Impact test
This test shall be carried out in accordance with the test method specified in GB6587.5-86 "Electronic measuring instrument impact test", the test conditions shall be selected in Table 1, and the specific method shall be specified in the product standard. 5.1.5 Transportation test
This test shall be carried out in accordance with the test method specified in GB6587.6-86 "Electronic measuring instrument transportation test", and the flow condition level shall preferably be level 1.
5.2 Electromagnetic compatibility test
5.2.1 The measurement method of radio interference limit value shall be carried out in accordance with the method specified in GB9254. 5.2.2 The radiation and conduction sensitivity test shall be carried out in accordance with the test equipment and test methods specified in GB6833.5 and GB6833.6. 5.3 Safety test
5.3.1 Earth leakage current test
Carry out in accordance with the provisions of Article 5.2 of GB4943.
5.3.2 Dielectric strength test
Carry out in accordance with the provisions of Article 5.3 of GB4943. No pretreatment is performed during factory inspection. 5.4 Product performance test
5.4.1 Test equipment
a. A set of microcomputers and printing equipment
b. Vernier calipers with clamps or other measuring instruments, the measurement accuracy of which should be higher than the sheath accuracy of the digitizer. 5.4.2 Effective format measurement
JB/T5233-91
Set the working mode of the digitizer to point mode, use the floating origin absolute coordinate mode, use the cursor to input, and read the coordinate display. Place the cursor at the lower left corner of the digitizer, press the reset switch, and then press the cursor switch. At this time, the X and Y readings on the coordinate display are both 0; then place the cursor at the upper right corner of the digitizer, press the cursor switch, and the X and Y readings on the coordinate display should be greater than the values specified in Article 4.5.1.
5.4.3 Accuracy measurement
First place the vernier caliper with a clamp flat on the digitizer, and then place the cursor at the specified position in the clamp. Move the cursor to measure m (m ≥ 5) set points on the digitizer. Each point needs to be measured n (n = 4 ~ 10) times: Use the coordinate display to read the X and Y coordinate values of the set point. The x and Y coordinate values of the mth point are Xm and Ym respectively. Adjust the adjustment mechanism of the X and Y directions on the vernier caliper to make the readings of the coordinate display gradually approach Xm and Y'm. If the readings on the vernier caliper at this time are called Xm and Ym, then the errors of point m in the X and Y directions are: oxm = |Xm~X'ml;
dym = |Ym-Y'ml
According to the above method, approach point m from different directions and measure n times. The average errors of point m in the X and Y directions are; (xm =Oxm1+0xm?+..+0xmn
ym - ym1+ym2++0ymn
Assume that the average error of m fixed points in the X and Y directions is: Vx=x1+0x2++0xm
Vy-Oyl+dy2++oym..
Vx and Vy should not be greater than the values specified in Article 4.5.3. 5.4.4 Working mode inspection
Start the relevant buttons or programs, the digitizer should be able to correctly enter the various working modes specified in Article 4.5.4, and the coordinate display or display screen can show the coordinates of the points collected by the cursor. 5.4.5 Coordinate mode inspection
Start the relevant buttons, the digitizer should be able to enter the coordinate mode specified in Article 4.5.5 and work normally. 5.4.6 Input code detection
Start the output code detection program, and use binary code, ASCII code and BCD code to read the mark reading of any point pointed by the cursor of the digitizer. The readings on the three coding coordinate display and display screen should be consistent (the error caused by floating point operation can be ignored). 5.4.7 Interface detection
Start the interface detection program, and the computer reads the point pointed by the cursor of the digitizer. Coordinate readings, the readings on the coordinate display and the display screen are consistent, which is normal.
The parallel interface is tested by connecting a printer. 5.4.8 Transmission rate test
Start the output rate test program, and change the transmission rate of the digitizer and the computer one by one according to 4.5.8. The readings of the measured point on the coordinate display and the display screen should be consistent.
5.5 Power adaptability testbZxz.net
The power adaptability is tested according to the following combinations: a.220V,50Hz
b.198V,49 Hz,
c.198V,51Hz;
d. 242V,49Hzz
e.242V,51Hz.
JB/T5233—91
The test time for each combination should not be less than 10min. During the test, the digitizer should be able to read accurately. 5.6 Reliability test
The reliability test can be carried out according to the provisions of ZBY320--85. The test plan is selected by the product standard according to ZBY320, and the failure criterion of the product reliability test is specified. 5.7 Appearance and structure inspection
Inspection is carried out by visual inspection.
6 Inspection rules
The product must pass the specified inspection before leaving the factory. The inspection is divided into: a, factory inspection;
b type inspection.
6.1 Factory inspection
6.1.1 Factory inspection shall be conducted by the quality inspection department of the manufacturer. 6.1.2 Factory inspection must be conducted on a case-by-case basis.
6.1.3 The items of factory inspection include 4.4, 4.5, 4.6 and 4.8. 6.2 Type inspection
6.2.1 The product shall pass type inspection when the design and production are finalized. 6.2.2 After formal production, if the design or process is changed, or the materials or parts are replaced, type inspection shall be conducted. 6.2.3 After formal production, type inspection shall be conducted periodically after a certain amount of production has been accumulated. Type inspection shall be conducted by the quality inspection department of the manufacturer or a quality inspection department recognized by the state. 6.2.4
6.2.5. The samples for type inspection shall be randomly selected from the qualified products, and shall not be less than 2 sets. 6.2.6 The items for type inspection are all the contents in Chapter 4. 6.2.7 After type inspection, a final inspection report shall be submitted. 7 Marking, packaging, transportation and storage
7.1 Product marking shall be marked in accordance with the requirements of GB1.3. 7.2
The packaging box shall meet the requirements of moisture-proof, dust-proof and shock-proof. 7.3 The packaging box should contain the certificate of conformity, instruction manual and packing list. The packaging box should have non-fading signs such as "Handle with care", "Boshi", "Upward", etc., which should comply with the provisions of GB191-85. 7.41
7.5 All packaged products can be transported by road, rail and air. During transportation, they must not be placed in open-air carriages or warehouses, and should be protected from rain, dust and mechanical damage.
7.6 In addition to the requirements of Article 4.1.2, the climate environment of the warehouse where the products are stored should be free of acid, alkali and film-corrosive gases, and there should be no strong mechanical shock, vibration and strong magnetic field.
Additional remarks:
This standard was proposed by the National Technical Committee for Standardization of Industrial Process Measurement and Control. This standard was drafted by the Wuhan Computer External Equipment Research Institute of the Ministry of Machinery and Electronics Industry. The main drafters of this standard are Zhang Degeng, Liu Xiaofeng, Tian Yongjiang, Xia Yinyin, Hu Hengzhi and Wang Junxiong.
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