GB/T 15412-1994 General technical requirements for pan/tilt platforms of television cameras
Some standard content:
UDC 621.397.61
National Standard of the People's Republic of China
GB/T 15412—94
General specification of pan/tilthead for NBTV camera
1994-12-06 Issued
State Administration of Technical Supervision
1995-06-01 Implementation
National Standard of the People's Republic of China
General specification of pan/tilthead for NBTV camera
1 Subject content and scope of application
GB/T15412—94
This standard specifies the technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of NBTV camera pan/tiltheads. This standard applies to NBTV camera pan/tiltheads (hereinafter referred to as pan/tiltheads) in environments without flammable or corrosive dust or gas. 2 Reference standards
Packaging, storage and transportation pictorial marking
GB2423.6 Basic environmental test regulations for electric and electronic products GB2423.10 Basic environmental test regulations for electric and electronic products GB4214
GB12322
GB14861
3 Product classification
3.1 Classification
Determination of sound power level of household electrical appliances
Test Eb Collision test method
Test Fc: Vibration (sinusoidal) test method Reliability test method for general-purpose applied television equipment Safety requirements and test methods for applied television equipment The pan/tilt is divided into an electric pan/tilt and a manual pan/tilt. 3.2 Basic parameters
3.2.1 The maximum load mass that the pan/tilt can bear is preferably 1.5, 2.5.3.5, 5, 8, 10, 15, 20, 25 and 30kg. 3.2.2 The pan/tilt rotation angle shall comply with the following provisions, and the specific range shall be specified in the product standard. The horizontal rotation angle shall not be less than 300°
The vertical rotation angle is divided into four types: 15°, 30°, 45° and 60° upward; and 30°, 45° and 60° downward. b.
3.2.3 The rotation speed of the electric pan/tilt (except for fast rotation) shall comply with the following provisions, and the specific speed shall be specified in the product standard. The horizontal rotation speed is within the range of (1.8~9°)/s; a.
b. The vertical rotation speed is within the range of (1°~6°)/s. 3.3 External dimensions
The external dimensions of the pan/tilt shall be specified in the product standard. 3.4 Installation dimensions
3.4.1 When the camera is directly installed on the pan/tilt working surface, the installation dimensions of the pan/tilt working surface shall comply with the provisions of Figure 1. Approved by the State Bureau of Technical Supervision on December 6, 1994 and implemented on June 1, 1995
Silicon Press
GB/T15412—94
14 ± 0+ L
Figure 1 Installation dimensions of the pan-tilt working surface
3.4.2 When the camera cover is installed on the pan-tilt working surface, the installation dimensions of the pan-tilt working surface shall comply with the provisions of Figure 2. Middle
Chuantou sound room
H6 (1/a*—20UNC)
Figure 2 Installation dimensions of the pan-tilt working surface
Note: L, B and dimensions are specified in the product standard based on the maximum load mass. 3.5 Electric pan-tilt interface
3.5.1 The external connector of the electric pan-tilt adopts a pin socket or a terminal strip. 1+
3.5.2 The contact points of the electric PTZ connector should be arranged as follows. If there is a special arrangement, it should be specified in the product standard. a.
There are 7 contact points, see Table 1:
Contact number
Signal name
Horizontal left
Horizontal right
Horizontal automatic rotation
Note: If there is no automatic rotation function, contact point 3 is empty. b.
There are 14 contact points, see Table 2:
Camera power
Power common terminal
Contact number
Signal name
Contact number
Signal name
Horizontal left
Horizontal right
AC common terminal
There are 20 contact points, see Table 3:
Contact number
Signal name||tt ||Contact number
Signal name
Contact number
Signal name
3.5 Quality
Fan/heater
Power common terminal
Vertical down
GB/T15412—94
Vertical up
DC common terminal
Fan/heater
The quality of the PTZ should be specified in the product standard. 3.6 Power supply voltage
Vertical down
Camera power
AC common terminal
Horizontal automatic rotation
Camera power
The power supply voltage of the electric PTZ should be specified in the product standard. 4 Technical requirements
4.1 Environmental requirements
4.1.1 Climate and environmental adaptability
Horizontal left
Fan/heater
Horizontal right
DC common terminal
The climate and environmental adaptability of the electric pan/tilt head is divided into three groups (as shown in Table 4), and the groups should be specified in the product standards. Table 4
Temperature storage conditions
Temperature limit conditions
Temperature operating range
Humidity operating conditions
Humidity storage conditions
Atmospheric pressure
4.1.1.1 Temperature
-40～60℃
0~40℃
5~30℃
30℃，75%
40℃，90%
Indoor type
Outdoor type
-40~60℃
-10~50℃
0~40℃
4 0℃，90%
50℃，90%
86~106kPa
—40~65℃
-25~60℃
-10~50℃
50℃，90%
60℃,90%
Vertically
GB/T15412—94
The maximum load, rotation angle and rotation speed within the working range of temperature shall meet the requirements of the product standard; the product function shall be guaranteed under extreme conditions: after the test, it shall meet the requirements of Articles 4.2.1, 4.2.2, 4.2.3 and 4.5. Note: In this standard, "product function" means that the gimbal can rotate and work under the condition of maximum load. 4.1.1.2 Humidity
The maximum load, rotation angle and rotation speed within the working conditions shall comply with the product standard. After the test, it shall comply with the provisions of Articles 4.2.1, 4.2.2, 4.2.3 and 4.5. 4.1.1.3 Rain
After the outdoor electric pan/tilt is subjected to water spray from the vertical direction and 45° angle for 1 hour each, it shall be able to work normally and no water shall penetrate into the interior.
4.1.2 Mechanical environmental adaptability
4.1.2.1 Sweep frequency vibration (sine)
The vibration adaptability of the pan/tilt is divided into three groups (as shown in Table 5), and the groups shall be specified in the product standard. After the test, the electric pan/tilt shall be able to work normally and comply with the provisions of Article 4.5. The manual pan/tilt shall rotate flexibly and comply with the provisions of Article 4.5. Table 5
Displacement amplitude
Frequency range
10~55~10
10~55~10
10~55~10
or acceleration amplitude
0.075 (displacement)
0.350 or 10
0.750 or 20
Crossover frequency
|Number of sweep cycles on each axis
(times)
Note: The groups of climate and vibration environment in Articles 4.1.1 and 4.1.2.1 do not necessarily have to correspond in use. 4.1.2.2 Collision
The sample should be vibrated in sequence on three
mutually perpendicular axes according to the working position, and cross-use is allowed.
The PTZ should be able to withstand a collision test with a pulse peak acceleration of 100m/s, a pulse duration of 16ms, and a collision number of 1000 times. After the test, the electric PTZ should be able to work normally and comply with the provisions of Article 4.5. The manual PTZ should be able to rotate flexibly and comply with the provisions of Article 4.5. 4.1.2.3 Free fall
Packaged pan/tilts with a mass not exceeding 50kg shall have the same packaging as that in the transport packaging during circulation (the packaging shall be in the shape of a parallelepiped), and shall be subjected to a drop test in accordance with the provisions of Table 6 and Figure 3. After the test, the electric pan/tilt shall be able to operate normally and comply with the provisions of Article 4.5, and the manual pan/tilt shall rotate flexibly and comply with the provisions of Article 4.5. Table 6
Drop Item
Drop Height, mm
Drop Surface
Number of Drops
Sample Mass, kg
>10~≤25
>25~50
As shown in Figure 3, drop downwards in the order of 3-2-5-4-6, once each
4.1.2.4 Transportation
GB/T15412-94
2-Surface;
3-Corrosion
1.5,3-30-Surface
The PTZ should be able to withstand a 6h (equivalent to 200km) simulated transport test on a general gravel road at a speed of 20-45km/h. After the test, the electric PTZ should be able to work normally and comply with the provisions of Article 4.5. The manual PTZ should rotate flexibly and comply with the provisions of Article 4.5. 4.2 Performance
4.2.1 Maximum load
When the distance from the working surface of the pan/tilt head to the center of gravity of the camera (including the center of gravity after the protective cover is used) is 50mm, the maximum load mass shall be selected in accordance with Article 3.2.1, and the specific value shall be specified in the product standard. 4.2.2 Rotation angle
The rotation angle of the pan/tilt head shall be specified and selected in accordance with Article 3.2.2, and the specific value shall be specified in the product standard. 4.2.3 Rotation speed
The rotation speed of the pan/tilt head shall be selected in accordance with Article 3.2.3, and the specific value shall be specified in the product standard. 4.2.4 Hysteresis
The horizontal and vertical rotation angle hysteresis of the electric pan/tilt head shall not exceed 1°. 4.2.5 Self-locking
When the electric pan-tilt stops rotating, it should have good self-locking performance4.2.6 Noise
When the indoor electric pan-tilt is under the maximum load, the noise should not be greater than 50dB4.2.7 Reliability
The lower limit of the assumed value of the mean time between failures (MTBF) of the electric pan-tilt should not be less than 5000h. 4.3 Function
The control functions transferred through the electric pan-tilt should work. 4.4 Safety requirements
Safety requirements should comply with GB14861.
4.5 Appearance
The appearance should be free of obvious mechanical damage, coating peeling damage, rust, the logo and text on the nameplate should be clear, the fastening parts should not be loose, and the plastic parts should not be blistering, cracking, or deformation. 5 Test methods
5.1 Test conditions
GB/T15412-94
All tests specified in this standard, unless otherwise specified, shall be conducted under the following normal test climate conditions: Degree: 15~35℃
Relative humidity: 45%~75%
Atmospheric pressure: 86106kPa
5.2 Environmental tests
5.2.1 Temperature
5.2.1.1 Division of groups
The temperature test is divided into three groups, see Table 6.
5.2.1.2 Test requirements
a. During the test, the rate of temperature change between each temperature step (see Figure 4) should usually be less than 20℃/h. On each temperature step, the product under test should reach a thermal equilibrium state before the test can be carried out. The thermal equilibrium time is 2h, b. When the tested product is in the high and low temperature storage test, the power supply is in the disconnected position and maintained in the high and low temperature for 4h respectively; c. The upper limit temperature operation time of the working range is 16h. When conducting the temperature test, the temperature in the high and low temperature boxes should be kept constant and uniform, and the temperature difference should not exceed ±2℃. If necessary, measures that do not violate the purpose of the temperature test can be taken, such as sealing the high and low temperature boxes and injecting dry air to prevent the influence of humidity, e. When conducting the temperature test, the power supply of the tested product should be connected to a power supply with adjustable voltage, f. The tested product should be placed in the normal working position. 5.2.1.3 Test method
5.2.1.3.1 The temperature test should be carried out according to the temperature cycle test timing diagram in Figure 4 (hereinafter referred to as the timing diagram). Figure 4 Temperature cycle test timing diagram
「Operation limit medical operation
Work piece
5.2.1.3.2 Reference condition temperature test: The test is carried out in a high and low temperature box with a temperature of 20±2℃ or in a room with similar reference conditions. After thermal equilibrium, the power supply of the tested product is turned on and the product function check is carried out: The product function check is carried out for the contents specified in Articles 4.2.1, 4.2.2 and 4.2.3; a.
b. The upper and lower limits of the supply voltage specified in the adjustable power supply output product standard are set, and the upper and lower limits of the supply voltage specified in the two numbers are set. After each of the above conditions is maintained for at least 15 minutes, conduct a product function check on the contents specified in Articles 4.2.1, 4.2.2 and 4.2.3. 6
GB/T15412—94
5.2.1.3.3 Lower limit temperature test of the working range: The power of the test product is in the disconnected position, and the temperature in the high and low temperature boxes is lowered to the temperature value of the corresponding step in the timing diagram. After 2 hours, connect the power of the test product and inspect the contents specified in Article 4.1.1.1. 5.2.1.3.4 Lower limit temperature test under extreme conditions: The power of the test product is in the disconnected position, and the temperature in the high and low temperature boxes is lowered to the temperature value of the corresponding step in the timing diagram. After 2 hours, check the product function. 5.2.1.3.5 Lower limit temperature test under storage conditions: The power of the test product is in the disconnected position, The temperature in the high and low temperature boxes is lowered to the temperature value of the corresponding step in the timing diagram and maintained for 4 hours.
5.2.1.3.6 Reference operating temperature test: The temperature in the high and low temperature boxes is raised to the reference temperature. After thermal equilibrium, the power of the test product is turned on and the contents specified in Articles 4.2.1, 4.2.2 and 4.2.3 are inspected. In order to ensure that the test product does not condense water, the temperature recovery rate can be reduced or other measures that do not violate the purpose of the temperature test can be taken. 5.2.1.3.7 Working range upper limit temperature test: The temperature in the high and low temperature boxes is raised to the temperature value of the corresponding step in the timing diagram. After the test product is powered on and works intermittently for 4 cycles (each cycle is 10 minutes of work and 20 minutes of non-work), the contents specified in Article 4.1.1.1 are inspected. ||tt| |5.2.1.3.8 Extreme Condition Upper Limit Temperature Test: The temperature in the high and low temperature boxes is raised to the temperature value of the corresponding step in the timing diagram. After the test product is powered on and works intermittently for 4 cycles (each cycle is 10 minutes of work and 20 minutes of non-work), the product function check is carried out. 5.2.1.3.9 Storage Condition Upper Limit Temperature Test: The power of the test product is in the disconnected position, and the temperature in the high and low temperature boxes is raised to the temperature value of the corresponding step in the timing diagram, and maintained for 4 hours.
5.2.1.3.10 Operating Range Upper Limit Temperature Operation Test: The power of the test product is in the disconnected position, and the temperature in the high and low temperature boxes is lowered to the temperature value of the corresponding step in the timing diagram. The test product is powered on and works intermittently for 32 cycles (each cycle is 10 minutes of work and 20 minutes of non-work). After the 16th cycle and at the end of the test, the contents specified in Articles 4.2.1, 4.2.2 and 4.2.3 are inspected. 5.2.1.3.11 Reference working condition temperature test: lower the temperature in the high and low temperature boxes to the reference temperature, and after 2 hours, inspect the contents specified in Articles 4.2.1, 4.2.2, 4.2.3 and 4.5. 5.2.2 Humidity
5.2.2.1 Division of groups
The humidity test is divided into three groups, see Table 6.
5.2.2.2 Test requirementsbzxZ.net
a. During the test, the product under test should be allowed to undergo heat and humidity equilibrium in each humidity step (see Figure 5) before testing. The thermal equilibrium time is 2 hours;
b. The air in the humid box (or room) should be able to circulate evenly to ensure that the temperature change in the box (or room) does not exceed ±2°C and the humidity change does not exceed ±3% within the specified time, and condensation should be prevented from falling on the product under test. c. The product under test should be placed in the normal working position. 5.2.2.3 Test method
5.2.2.3.1 The humidity test shall be carried out according to the humidity cycle test timing diagram in Figure 5 (hereinafter referred to as the timing diagram). 7
GB/T15412—94
Working upper limit
Conditional display
Base working parts
Performance in tea parts humidity
24(48(,1 Group 1
Figure 5 Timing diagram of humidity cycle test
time. h
Benchmark I push-up component
time, H
5.2.2.3.2 Benchmark working condition humidity test: It is carried out under the conditions of temperature of 20±5℃ and relative humidity of 50%. After thermal equilibrium, turn on the power supply of the tested product and conduct product function inspection: a. Conduct product function inspection for the contents specified in Articles 4.2.1, 4.2.2 and 4.2.3, and make the adjustable power supply output the upper and lower limit values of the supply voltage specified in the product, and keep each of these two values for at least 15min b.
After that, conduct product function inspection for the contents specified in Articles 4.2.1, 4.2.2 and 4.2.3. 5.2.2.3.3 Humidity test under working upper limit conditions: The humidity in the humidity box (or room) is raised to the corresponding value in the timing diagram, the tested product is powered on, and intermittently works for 24 cycles (each cycle is 10 minutes of work and 20 minutes of non-work) (Group 1) or intermittently works for 48 cycles (each cycle is 10 minutes of work and 20 minutes of non-work) (Groups I and II), and then the contents specified in Article 4.1.1.2 are inspected. 5.2.2.3.4 Humidity test under storage conditions: The power switch of the tested product is turned on, but it is not connected to the power grid, and the temperature and humidity in the humidity box (or room) are raised to the corresponding step values in the timing diagram, and stored for 24 hours (Group I) or 48 hours (Groups I and II). 5.2.2.3.5 Humidity test under reference working conditions: lower the temperature and humidity of the humidity box (or room) to the reference working conditions. After 2 hours of recovery, inspect the contents specified in Articles 4.2.1, 4.2.2, 4.2.3 and 4.5. 5.2.3 Rain
5.2.3.1 Test method
Place the outdoor electric pan/tilt head with the maximum load at 2m away from the rain equipment in normal working mode, and spray it with rainwater in vertical and 45° angle with a rainfall of 10-20mm/min for 1 hour each. During this period, the machine should be turned on b.
Working spot check 2-3 times to check whether it can work normally; c. After the test, check whether it can work normally. No water should penetrate inside. 5.2.4 Sweep frequency vibration (sine) test
5.2.4.1 Test equipment
The test equipment should comply with the provisions of Chapter 3 of GB2423.10. 5.2.4.2 Test method
The unpackaged and unpowered test product is fastened on the vibration table in the normal working position (the vertical line of the combined center of gravity of the test product and the fixture should be located at the center of the vibration table as much as possible, the exciting force should be directly transmitted to the test product, and the test product's device parts (bolts, pressure strips, pressure plates, etc.) should be tightened as much as possible to produce self-resonance during the vibration test; 8
GB/T15412-94
The test product is subjected to sweep vibration at 10～55～10Hz and a sweep rate of 1 octave/min as specified in Table 7. Below the crossover frequency (26Hz), fixed displacement is used, and above the crossover frequency, fixed acceleration is used, c.1 octave/min sweep rate, and a cyclic sweep (fi→2→f1) is performed within a certain frequency range. The time is as shown in formula (1):
T=6.6441g(
Wherein: T——time, min;
fi——lower limit frequency of frequency sweep, Hz,
f2——upper limit frequency of frequency sweep, Hz.
d. After the test, the test shall be carried out in accordance with the contents specified in Article 4.1.2.1. 5.2.5 Collision test
5.2.5.1 Test equipment
The test equipment shall comply with the provisions of Chapter 3 of GB2423.6. 5.2.5.2 Test method
The unpackaged and unpowered test product shall be fastened to the center of the collision table in the normal working position; a.
b. The collision table shall be operated at a pulse peak acceleration of 100m/s2, a pulse duration of 16ms, and a pulse of 100m/s2 per minute. Adjust for 60 to 80 times, and the test product collides 1000 ± 10 times;
c. After the test, inspect according to the contents specified in Article 4.1.2.2. 5.2.6 Free fall test
5.2.6.1 Test equipment
5.2.6.1.1 Lifting device: The test package should not be damaged during the lifting or releasing process. 5.2.6.1.2
, Device supporting the test package: Before releasing, the falling surface of the test package should be parallel to the impact surface, and the maximum angle should not exceed 2°;
Release device: During the release process, the test package does not touch any component of the device and falls freely. 5.2.6.1.3
5.2.6.1.4 Impact surface: It should be horizontal, flat, solid and hard. Hard, so that it does not move or deform during the test. Usually, the impact surface should meet the following requirements:
Whole block: The mass is at least 50 times the mass of the heaviest package under test; Flat: The height difference between any two points on the impact surface does not exceed 2mm; Hard: A static load of 10kg is placed on any 100mm2 area of the impact surface, and the deformation does not exceed 0.1mm; c.
Area: The size of the area must be sufficient to ensure that the package under test falls completely on the impact surface. d.
5.2.6.1.5 The equipment should have a height indicator. 5.2.6.2 Test method
Lift the package under test to meet the state specified in Article 5.2.6.1.2; a.
b. Lift the package under test to the specified height position according to Article 4.1.2.3. The difference between the lifting height (the vertical distance between the lowest surface of the package under test and the impact surface) and the predetermined height shall not exceed ±2%; c. Release the tested package and let it fall freely; d. After the test, inspect according to the contents specified in Article 4.1.2.3. 5.2.7 Transport test
5.2.7.1 Test bench conditions
The vibration waveform of the automobile bump simulation test bench is a stable broadband random wave, and the probability density function of the instantaneous value of acceleration should be approximately normally distributed. The simulated actual transportation state is that the truck load is about 2.5t, the general gravel road surface, the speed is 20~45km/h, and the test acceleration level is 9
Time 11.
5.2.7.2 Test method
GB/T15412—94
&. The packaged test product is securely fixed on the table with a clamp or rope. When fixing, the center of gravity of the test product should be consistent with the center of the table as much as possible. If the mass of the tested product is less than 100kg, it is necessary to add counterweight to 100kg; adjust the voltage and gear speed of the DC motor speed control power supply box to the specified value according to the test use standard, so that the test bench starts 6b.
After the test, the content specified in Article 4.1.2.4 shall be inspected. c.
Note: If there is no simulated transport test bench, it is allowed to use a car transport test that meets the following conditions instead: Road surface: Intermediate road surface of Class III highway, i.e. gravel road, irregular stones and dirt road (Highway Engineering Technical Standard issued by the Ministry of Communications in 1972) Mileage: 200kmz
Speed: 30~40km/h
Model: 4t car,
Loading capacity: one-third of the full load,
Packaging location: rear of the car.
5.3 Performance in Use
5.3.1 Maximum Load
Install a simulated camera with a center of gravity 50mm from the bottom surface and a mass equal to the maximum load specified in the product standard on the gimbal so that its center of gravity passes through the gimbal rotation center.
5.3.2 Angle of Rotation
Under the conditions of Article 5.3.1, place the gimbal at the starting end, and then use an angle ruler or a protractor to measure the angle of rotation when the gimbal rotates to the terminal.
5.3.3 Rotation Speed
Under the conditions of Article 5.3.1, place the electric gimbal at the starting end, start the electric gimbal, and use a stopwatch to record the time required for the gimbal to rotate back and forth from the starting end to the terminal (maximum rotation angle). Calculate the rotation speed according to formula (2). 0=s
Where: の——rotation speed, ()/s, s—rotation time, s,
α——rotation angle, ().
5.3.4 Hysteresis
Fix one end of a ruler of a certain length and good rigidity on the output shaft of the test pan-tilt head. The ruler passes through the center of rotation and is perpendicular to the output shaft. During the test, place the dial indicator close to the other end of the ruler and turn the pan-tilt head in one direction by hand to eliminate the gap in this direction, while adjusting the dial indicator reading to zero. Then rotate the pan-tilt head in the opposite direction by hand, and the value read from the dial indicator is calculated by formula (3), which is the hysteresis.
@=2arcsin
Where: ——hysteresis, ();
percentile indicator reading, mm;
L——ruler length, mm.
5.3.5 Self-locking
(3)
GB/T15412—94
Install a simulated camera or heavy object with a mass of 1.1 times the maximum load on the working surface of the electric pan/tilt head according to the method in Article 5.3.1. When the electric pan/tilt head stops in the vertical direction, the output shaft shall stop rotating immediately. When the output shaft is unloaded, the torque specified in Table 7 shall be applied to prevent it from rotating in the horizontal direction.
Maximum load mass
5.3.6 Noise
Work under the conditions of Article 5.3.1 and test under the free field conditions specified in GB4214. The measuring surface is a sphere. The radius of the sphere r=1m, and the measured A sound level shall be less than 50dB.
5.3.7 Reliability
Except for the following provisions, which shall be carried out in accordance with the provisions of this standard, the rest shall be carried out in accordance with the provisions of GB12322. 5.3.7.1 Test conditions
The reliability test shall be carried out under the conditions of Article 5.3.1. 5.3.7.2 Test plan
The test plan selected in accordance with GB12322 shall be specified in the product standard. 5.3.7.3 Comprehensive environmental stress test cycle diagram The specific comprehensive environmental stress to be adopted shall be specified in the product standard in accordance with the following provisions. a. The constant temperature comprehensive environmental stress test cycle diagram is shown in Figure 6. Vibration stress is only applied before the start of the test cycle for a total of 20 minutes. For moisture stress, the relative humidity should be controlled at 35% to 85% during the entire test cycle. For temperature stress, if the test product is working in an air-conditioned room, the temperature shall be +20°C; if it is working in a non-air-conditioned room, the temperature shall be +40°C. The starting point of the test cycle can be the starting point of any working state; 11
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