Some standard content:
ICS65.40.30
Machinery Industry Standard of the People's Republic of China
JB/T10306-2001
Design regulation on greenhouse climate control system
Published on September 3, 2001
China Machinery Industry Federation
Implementation on December 1, 2001
JB/T10306—2001
This standard is one of the greenhouse series standards formulated for the first time. This series of standards includes: greenhouse structure design load
-greenhouse ventilation and cooling design specification
-greenhouse engineering terminology
multi-span greenhouse structure
one-day greenhouse structure
wet curtain cooling device
greenhouse heating system design specification
greenhouse electrical wiring design specification
greenhouse control system design specification
Among the above standards, the first two are national standards and the rest are industry standards. This standard is a newly formulated industry standard.
This standard is proposed and managed by the National Agricultural Machinery Standardization Technical Committee. The drafting units of this standard are: China Agricultural Mechanization Science Research Institute, Hebei Langfang Jiutian Agricultural Engineering Co., Ltd., and Yangling Qinchuan Water-Saving Irrigation Engineering Co., Ltd.
Drafters of this standard: Liu Shumin, Huang Fenggang, and Zhang Minqiang. 1 Scope
Machinery Industry Standard of the People's Republic of China
Design regulation for greenhouse climate control system
Design regulation for greenhouse climate control system
JB/T10306—2001
This standard specifies some basic principles and requirements for greenhouse control design, and serves as a guide for greenhouse control system design. This standard applies to greenhouse control systems, control devices, wires and sensors. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard was published, the versions shown were valid. All standards are subject to revision. Parties using this standard should explore the possibility of using the latest versions of the following standards: GB/T2423.3—1993
GB/T 2423.16—1999
GB/T2424.11—1982
GB/T 2681—1981
GB/T 4588.3—1988
GB4793.1—1995
GB/T5465.1-5465.2—1996
GB/T 6587.2—1986
GB/T16261—1996
3 Design principles of greenhouse automatic control systems
3.1 Basic design principles
Basic environmental test procedures for electric and electronic products Test Ca: Steady-state damp heat test method Environmental testing for electric and electronic products Part 2: Test method Test J and guidance: Mildew growth Basic environmental test procedures for electric and electronic products Sulfur dioxide test guide for contact points and connectors
Wire colors in electrical complete sets
Printed circuit boards design and use
Safety requirements for electrical equipment for measurement, control and laboratory use Part 1: General requirements Graphic symbols for electrical equipment
Temperature test for electronic measuring instruments
General specification for printed boards
3.1.1 The selected instruments must be able to meet the requirements and accuracy requirements of greenhouse environmental control indicators. The test equipment and instruments should be inspected and calibrated before testing.
3.1.2 The reliability of the automatic control system under working conditions must be guaranteed. 3.1.3 The arrangement of sensors can make the measurement results most representative of the physical environment of the plant growth area. 3.1.4 The power supply requirements are: power supply frequency F50Hz ± 5Hz, voltage variation is not more than ± 10% of the design voltage. 3.1.5
The control system design should consider its economy. 3.1.6 The control system should consider avoiding electromagnetic interference. 3.1.7 The control system design documents should include circuit schematics, control system diagrams and instruction manuals. 3.1.8 Safety operation signs should be installed in areas of the control system where there are potential dangers, and the signs should comply with the relevant provisions of GB/T5465.2. Approved by China Machinery Industry Federation on September 3, 2001, implemented on December 1, 2001
3.2 Control box design requirements
JB/T10306—2001
3.2.1 The components used in the equipment must comply with the corresponding standards of the components. The selection of all components should comply with the design quotas (such as voltage, current, temperature, etc.) specified by the manufacturer, and should not only take into account the use under normal working conditions, but also the use of the equipment under the most unfavorable conditions.
3.2.2 The color of the wires used in the equipment should comply with the provisions of GB/T2681. 3.2.3 The printed circuit boards used in the equipment should comply with the relevant provisions of GB/T4588.3 and GB/T16261. 3.2.4 Sufficient space should be left around the power radiator in the equipment to ensure good cooling and heat dissipation conditions. 3.2.5 The control box should have a special tool or key to open the door. The door should be fastened with a latch or lock. It can only be opened with a special tool or key. The key must be removed and taken away after use.
3.2.6 When the controlled object is a motor with a capacity greater than 1kW and continuously running, the equipment should have overload protection. 3.2.7 The equipment must be equipped with zero voltage protection. This protection should be designed so that when the power is restored after a power outage, the controlled motor cannot start automatically.
3.2.8 There must be a grounding point on the control box and it must be firmly in contact with the ground. 3.2.9 The design of the control circuit should ensure personal safety under various circumstances. In addition, whether it is an electrical failure or an operating error, the equipment must be effectively protected from damage.
3.2.10 When the controlled motor has forward and reverse rotation, the operating components should be interlocked with each other to ensure that the operating components in both directions cannot be connected at the same time.
3.2.11 There should be enough space between the components in the control box to facilitate assembly and wiring. Each component should be marked with a striking symbol or code.
3.2.12 The impact vibration generated by the action of certain impact components should not cause malfunction of other components in the box. 3.2.13 Soft rubber wires must be used in places that are frequently moved (such as connecting wires across the box door), and there must be enough length margin to avoid sharp bending and excessive tension.
3.2.14 AC power lines, DC power lines and high-level (above 110V) loop lines should be separated from low-level (measurement, signal, pulse, etc.) loop lines and should have a certain interval. Isolation or shielding measures should be taken when necessary. 3.2.15 All connections from external cables to the control box must pass through the terminal block. Each wiring point on the terminal block should be marked with the circuit symbol of the point, and the label should be consistent with the label on the electrical schematic or wiring diagram. 3.3 Requirements for the appearance of automatic control boxes
3.3.1 The structure of the control box should be firm and should be able to withstand the mechanical, electrical, thermal stress and moisture that may be encountered under normal use conditions.
3.3.2 All ferrous metal parts should have a reliable protective layer, all fasteners should be galvanized, and all fastenings should be equipped with anti-loosening devices.
3.3.3 The surface of the box should be flat, without bumps, the paint color should be uniform, neat and beautiful, and there should be no bubbles, cracks and sagging.
3.3.4 Large floor-mounted control cabinets should have fixing holes for foundation installation, and the installation dimensions should meet the requirements of the manufacturing drawings. 3.3.5 Large floor-mounted control cabinets should have lifting rings, handles, etc. that are easy to carry. 3.3.6 Operation and control devices should be installed in a position that is easy for operators to operate, and the display window should be similar to the height of human eyes. 3.3.7 The greenhouse control system should be equipped with reliable lightning protection equipment. 2
4 Control content and accuracy
JB/T10306—2001
4.1 Energy-saving solar greenhouse control system. The basic test content is the temperature and humidity in the greenhouse. The temperature measurement range is 0~50℃, and the measurement accuracy is 1℃: the humidity measurement range is 10RH%-100RH%, and the measurement accuracy is 10RH%4.2 Multi-span greenhouse automatic control system. The basic measurement content is the temperature in the greenhouse, the humidity in the greenhouse, the ambient temperature, wind speed, rainfall, and light. According to user requirements, the measurement content can also include nutrient solution concentration (EC), pH, and indoor CO concentration. The temperature measurement range is 0~50℃ for the temperature in the greenhouse, and the measurement error is 0.5℃. The humidity measurement range in the greenhouse is 10RH%~100RH%, and the measurement error is 5RH%. The ambient temperature measurement range is between the local minimum and maximum temperatures, and the measurement error is 0.5℃. The wind speed measurement range is 0~32.6m/s, and the measurement accuracy is 1m/s. The light measurement range is 10~1000001x
The EC value measurement range is 0.1~4ms/cm, and the measurement accuracy is 0.1ms/cm. The pH value measurement range is 3~10pH, and the measurement accuracy is 0.1pHCO, the measurement range is 10~2500ppm, and the measurement accuracy is 10ppm. 4.3 The multi-span greenhouse automatic control system can automatically control the opening and closing of the skylight, the opening and closing of the side windows, the retraction and extension of the sunshade net, the ventilation and cooling evaporation cooling system, the heating system, etc.
4.4 The sampling period for measuring wind speed shall not exceed 10s, and the sampling period for other items shall not exceed 15min. 4.5 The skylight should be able to be opened in stages when it is opened. 4.6 The multi-span greenhouse automatic control system must have a good human-machine interface to facilitate the operator to input the preset value of the greenhouse environment in time according to the growth of plants.
5 Inspection method
5.1 For greenhouse control systems installed on site, on-site inspection and acceptance of single products shall be implemented. 5.2 Random inspection shall be implemented for greenhouse control systems installed off-site. 5.3 Appearance inspection
The automatic control system shall be inspected for appearance, and the inspection content includes: a) Check whether the product (including all control units) conforms to the manufacturing drawings and corresponding standards, whether various components are installed firmly and correctly, and whether all connections are correct;
b) Check whether all mechanical operating parts, locks and other moving parts are flexible and the action effect is correct; ) Check whether the specifications, dimensions, color codes and layout of wires and cables meet the requirements; d) Check whether the technical documents and information are complete. 5.4 General performance inspection
5.4.1 The greenhouse automatic control system device shall be subjected to Group II temperature test in accordance with GB/T6587.2. 5.4.2 In addition to the inspection in 5.4.1, the control device installed in the greenhouse that cannot be isolated from the entire greenhouse environment shall also be subjected to a 21-day constant heat test at a temperature of 40°C ± 2°C and a relative humidity of 93RH% ± 3RH% in accordance with GB/T2423.3. 5.4.3 Automatic control devices installed around large and medium-sized cities or in places with serious air pollution shall be subjected to a sulfur dioxide test in accordance with GB/T2424.11. bzxz.net
5.4.4 Automatic control devices installed in high humidity environments shall be subjected to a mildew growth test in accordance with GB/T2423.16. 3
Continuity test
JB/T10306—2001
For automatic control systems installed on site, in order to ensure the reliability of continuous operation, a continuous operation test shall be carried out after on-site installation. This is to test the system's performance stability and anti-interference ability. The power supply during the continuous operation test shall meet the requirements, and the operation time shall be more than 24 hours. The test results and each functional action should be correct.
Safety inspection
The greenhouse control system should comply with the relevant provisions of the relevant parts of GB4793.1 and be inspected according to its requirements. Safety operation signs should be installed in all areas of the control system where there are potential dangers, and the signs should comply with the relevant provisions of GB/T5465.2. 4
Mechanical Industry Standard
Greenhouse Control System Design Specification
JB/T10306-2001
Published and issued by the Mechanical Science Research Institute
Printed by the Mechanical Science Research Institute
(No. 2 Shouti South Road, Beijing, Postal Code 100044)*
Format 880×12301/16 Printing Sheet 1/2
Word Count 1Q000
First Edition in November 2001
First Printing in November 2001
Print Quantity 1-500
Price 1000 Yuan
2001-162
Mechanical Industry Standard Service Network: http/AvwwJB.ac.cn9
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