Intelligent air volume testing system and method thereof

Abstract

An intelligent air volume test system includes an automatic plate changing device, an air volume table, and a device to be tested; the automatic plate changing device includes a box, a rotating plate, and a stepping motor; the box cavity includes an outer plate, a rubber gas column, a side plate, and an inner plate; the rotating plate is a circular rotating plate, located between the outer plate and the inner plate of the box, the air volume plate is cylindrical, including an annular plate, a spring, and a test plate, and an infrared receiver is arranged at the edge of the test plate; an equal number of infrared transmitter devices are arranged at the same position as the infrared transmitter in the air cylinder of the air volume table. And a method for realizing an intelligent test system is provided. The present invention can improve work efficiency and achieve good test results.

Description

Technical Field

[0001] The invention relates to an intelligent air volume testing system and a method thereof. Background Art

[0002] In the fan performance test, air volume test is one of the important items. The bare fan, negative pressure box or the whole machine is connected to the wind duct, and the operating conditions of the fan are adjusted by replacing orifice plates of different specifications. Finally, the corresponding data are analyzed to obtain the fan's air volume, static pressure and other data.

[0003] Orifice plates are usually made of stainless steel round plates. During the current air volume test, the process of replacing round plates of different specifications needs to be done manually. In order to improve work efficiency and reduce the workload of experimenters, it is necessary to design a system that can automatically test the device, intelligently replace the orifice plate, and quickly perform air volume testing. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides an intelligent air volume testing system and method thereof, which can effectively improve the testing efficiency of the experiment and reduce the burden on the staff.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] An intelligent air volume test system comprises an automatic plate changing device (1) and an air volume table (2); the automatic plate changing device (1) comprises a box (11), a rotating plate (12), and a stepping motor (14); the upper end of the box (11) is a cylindrical cavity with an opening on one side, and the lower end is a floor-standing rectangular box; the cylindrical cavity at the upper end of the box comprises an outer plate (111), a rubber air column (112), a side plate (113), and an inner plate (114); an air outlet is arranged at the same height as the air volume table; the rubber air column (112) is hollow, one end of which is fixed to the outer plate (111); the rubber air column (112) is connected to an inflating device; one end of the inner plate (114) is fixed to the side plate (113); The other end of the inner plate (114) is fixed to the air volume table; the rotating plate (12) is a circular rotating plate, located between the outer plate and the inner plate of the box, the center of the rotating plate is coaxially arranged with the rotating shaft of the stepping motor, and the rotating plate (12) is surrounded by an air volume plate (13); the air volume plate (13) is cylindrical, including an annular plate (131), a spring (132) and a test plate (133), the annular plate (131) and the test plate (133) are welded, and the spring (132) is fixed to the annular plate; the test plate (133) has a hole in the center, the size of the hole is determined according to the national standard, and an infrared receiver is arranged on the edge of the test plate (133); an equal number of infrared transmitter devices are arranged at the same position as the infrared transmitter in the air cylinder of the air volume table.

[0007] Furthermore, the number of the air volume plates (13) is 11, and the plate with an angle θ=0° with the horizontal line is named plate No. 0, followed counterclockwise by plate No. 1, plate No. 2...plate No. 10, and the interval angle between two plates is 360 / 11°.

[0008] Furthermore, the diameter of the rotating plate D3 is 1200 mm; the outer diameter of the annular plate (131) is D1 = 340-345 mm, and the inner diameter D2 = 310-313 mm; the size of the holes in the test plate (133) corresponds to the plate position, and starting from plate No. 0, d0 = 0 mm, d1 = 40 mm, d2 = 60 mm, d3 = 80 mm ... d10 = 220 mm are set in sequence.

[0009] The number of the rubber air columns (112) is 8, the number of the springs (132) is 12, and the number of the infrared receivers is 8.

[0010] The stepping motor (14) is arranged at the same height as the center of the air volume table.

[0011] An intelligent air volume testing method comprises the following steps:

[0012] 1) The computer instruction system sends the board number T0, T1, T2...T10 to be tested.

[0013] 2) The board number signal T(x) is transmitted to the signal control module, which can receive the feedback primary signal K1 from the stepper motor and the feedback secondary signal K2 from the optical signal receiving module. The signal control module performs signal judgment on the received signal and outputs the required rotation angle R(x) of the motor;

[0014] 3) The rotation angle R(x) signal is transmitted to an angle signal conversion module, and the angle signal conversion module converts the received angle signal into a frequency signal f(x) that can be received by the stepping motor;

[0015] 4) After receiving the frequency signal f(x), the stepper motor starts to rotate at an angle, and after rotating at a specified angle, it sends a feedback primary signal K1 and a secondary signal D to the power supply;

[0016] 5) The infrared emitting device receiving the power signal emits infrared rays, and the eight evenly distributed infrared receiving devices all receive the optical signal and send a secondary feedback signal K2;

[0017] 6) When the infrared receiving devices all receive the light signal, the inflation device starts the inflation operation;

[0018] 7) The rubber gas column expands after being inflated, pushing the test plate into the air cylinder of the air volume table. After the test is completed, the computer is given a test completion signal W(x). At the same time, the inflation device stops working, and the gas in the rubber gas column flows back, and the spring pushes the air volume plate back to its original position.

[0019] 8) Repeat this cycle until all air volume plate tests are completed.

[0020] The beneficial effects of the present invention are embodied in:

[0021] (1) The present invention is provided with a circular rotating plate changing mechanism to realize automatic mechanical adjustment of the operating condition.

[0022] (2) The device is equipped with an automatic testing process and two feedback messages to improve the accuracy of automatic plate replacement.

[0023] (3) This test system can replace different orifice plates according to computer instructions, speeding up the test and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the structure of a test system in one embodiment.

[0025] Figure 2 is a side view of a test system in one embodiment.

[0026] Figure 3 It is the AA local diagram in the box diagram.

[0027] Figure 4 It is the annular arrangement diagram of the air volume test orifice plate.

[0028] Figure 5 It is a structural diagram of test board No. 0 in one embodiment.

[0029] Figure 6 This is a diagram showing the arrangement of infrared receiving points on test board No. 0 in one embodiment.

[0030] Figure 7 It is a flow chart of the intelligent air volume test of the present invention. DETAILED DESCRIPTION

[0031] The following is a detailed description with reference to the accompanying drawings and embodiments:

[0032] In order to show the technical scheme and advantages of the present invention in more detail, some relevant examples will now be described. The purpose of the present invention is explained by combining corresponding pictures and examples. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention in any way. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Reference Figure 1 to Figure 7, an intelligent air volume test system, comprising an automatic plate changing device (1), an air volume table (2), and a device to be tested (3); the automatic plate changing device (1) comprises a box body (11). A rotating plate (12) and a stepping motor (13); the upper end of the box body (11) is a cylindrical cavity with an opening on one side, and the lower end is a floor-standing rectangular box body; the cylindrical cavity at the upper end of the box body includes an outer plate (111), a rubber air column (112), a side plate (113) and an inner plate (114); an air outlet is arranged at the same height as the outer plate (111) and the air volume table; the rubber air column (112) is hollow, one end of which is fixed to the outer plate (111), the rubber air column (112) is connected to an inflatable device, and the number of the rubber air columns (112) is 8; one end of the inner plate (114) is fixed to the side plate, and the other end is fixed to the air volume table; the rotating plate (12) is a circular rotating plate, located between the outer plate and the inner plate of the box body, the center of the circular plate is coaxially arranged with the motor rotation axis, and the rotating plate (12) is surrounded by 11 air volume plates (13) ); the air volume plate (13) is cylindrical, comprising an annular plate (131), a spring (132), and a test plate (133); the annular plate (131) and the test plate (133) are welded, the spring (132) is fixed to the annular plate, and the number of the springs (132) is 12; the test plate (133) has a central opening, the size of the opening is determined according to the national standard, infrared receivers are arranged at the edge of the test plate (133), the number of the infrared receivers is 8, and the infrared receivers starting from the top are numbered 11, 12, 13 ... 18 in sequence; the asynchronous motor (14) is arranged at the same height as the center of the air volume table; the air volume table (2) is selected according to the national standard, and the same number of infrared transmitter devices are arranged in the same position as the infrared transmitter in the air cylinder of the air volume table; the device to be tested (3) is selected according to actual conditions;

[0034] The number of the air volume plates (13) is 11, and the plate with an angle θ=0° with the horizontal line is named plate No. 0, and the plates are plate No. 1, plate No. 2 ... plate No. 10 in counterclockwise order, and the interval angle between two plates is 360 / 11°;

[0035] The diameter of the rotating plate is D3=1200mm; the outer diameter of the annular plate (131) is D1=340-345mm, and the inner diameter is D2=310-313mm; the size of the holes in the test plate (133) corresponds to the plate position, and starting from plate No. 0, d0=0mm, d1=40mm, d2=60mm, d3=80mm...d10=220mm are set in sequence;

[0036] An intelligent testing method, using an automatic rotating plate changing structure, comprises the following steps:

[0037] 1) The computer instruction system sends the board number T0, T1, T2...T10 to be tested;

[0038] 2) The board number signal T(x) is transmitted to the signal control module, which can receive the feedback primary signal K1 from the stepper motor and the feedback secondary signal K2 from the optical signal receiving module. The signal control module performs signal judgment on the received signal and outputs the required rotation angle R(x) of the motor;

[0039] 3) The rotation angle R(x) signal is transmitted to an angle signal conversion module, and the angle signal conversion module converts the received angle signal into a frequency signal f(x) that can be received by the stepping motor;

[0040] 4) After receiving the frequency signal f(x), the stepper motor starts to rotate at an angle, and after rotating at a specified angle, it sends a feedback primary signal K1 and a secondary signal D to the power supply;

[0041] 5) The infrared emitting device receiving the power signal emits infrared rays, and the eight evenly distributed infrared receiving devices all receive the optical signal and send a secondary feedback signal K2;

[0042] 6) When the infrared receiving devices all receive the light signal, the inflation device starts the inflation operation;

[0043] 7) The rubber gas column expands after being inflated, pushing the test plate into the air cylinder of the air volume table. After the test is completed, the computer is given a test completion signal W(x). At the same time, the inflation device stops working, the gas in the rubber gas column flows back, and the spring pushes the air volume plate back to its original position;

[0044] 8) Repeat this cycle until all air volume plate tests are completed.

Claims

1. An intelligent air volume test system, characterized in that: The invention comprises an automatic plate changing device (1) and an air volume table (2); the automatic plate changing device (1) comprises a box body (11), a rotating plate (12), and a stepping motor (14); the upper end of the box body (11) is a cylindrical cavity with an opening on one side, and the lower end is a floor-standing rectangular box body; the cylindrical cavity at the upper end of the box body comprises an outer plate (111), a rubber air column (112), a side plate (113), and an inner plate (114); an air outlet is arranged at the same height as the air volume table on the outer plate (111); the rubber air column (112) is hollow, one end of which is fixed to the outer plate (111); the rubber air column (112) is connected to an inflatable device; one end of the inner plate (114) is fixed to the side plate (113); The other end of the inner plate (114) is fixed to the air volume table; the rotating plate (12) is a circular rotating plate, located between the outer plate and the inner plate of the box; the center of the rotating plate is coaxially arranged with the rotating shaft of the stepping motor; the rotating plate (12) surrounds the air volume plate (13); the air volume plate (13) is cylindrical, comprising an annular plate (131), a spring (132) and a test plate (133); the annular plate (131) and the test plate (133) are welded, and the spring (132) is fixed to the annular plate; the test plate (133) has a hole in the center, the size of the hole is determined according to the national standard, and an infrared receiver is arranged on the edge of the test plate (133); an equal number of infrared transmitter devices are arranged in the air cylinder of the air volume table.

2. The intelligent air volume test system according to claim 1, characterized in that: The number of the air volume plates (13) is 11, and the plate with an angle θ=0° with the horizontal line is named plate No. 0, followed counterclockwise by plate No. 1, plate No. 2 ... plate No. 10, and the interval angle between two plates is 360 / 11°.

3. An intelligent air volume test system as claimed in claim 1 or 2, characterized in that: The diameter of the rotating plate is D3=1200 mm; the outer diameter of the annular plate (131) is D1=340-345 mm, and the inner diameter is D2=310-313 mm; the size of the holes in the test plate (133) corresponds to the plate position, and starting from plate No. 0, d0=0 mm, d1=40 mm, d2=60 mm, d3=80 mm…d10=220 mm are set in sequence.

4. An intelligent air volume test system as claimed in claim 1 or 2, characterized in that: The number of the rubber air columns (112) is 8, the number of the springs (132) is 12, and the number of the infrared receivers is 8.

5. The intelligent air volume test system according to claim 1, characterized in that: The stepping motor (14) is arranged at the same height as the center of the air volume table.

6. A method for implementing the intelligent air volume test system according to claim 1, characterized in that: The method comprises the following steps: 1) The computer instruction system sends the board number signal to be tested 0, T1, T2...T10, 2) The board number signal T(x) is transmitted to the signal control module, which can receive the feedback primary signal K1 from the stepper motor and the feedback secondary signal K2 from the optical signal receiving module. The signal control module makes a signal judgment on the received signal and outputs the required rotation angle R(x) of the motor; 3) The rotation angle R(x) signal is transmitted to an angle signal conversion module, and the angle signal conversion module converts the received angle signal into a frequency signal f(x) that can be received by the stepping motor; 4) After receiving the frequency signal f(x), the stepper motor starts to rotate at an angle, and after rotating at a specified angle, it sends a feedback primary signal K1 and a secondary signal D to the power supply; 5) The infrared emitting device receiving the power signal emits infrared rays, and the eight evenly distributed infrared receiving devices all receive the optical signal and send feedback secondary signal K2; 6) When the infrared receiving devices all receive the light signal, the inflation device starts the inflation operation; 7) The rubber gas column expands after being inflated, pushing the test plate into the air cylinder of the air volume table. After the test is completed, the computer is given a test completion signal W (x). At the same time, the inflation device stops working, and the gas in the rubber gas column flows back, and the spring pushes the air volume plate back to its original position. 8) Repeat this cycle until all air volume plate tests are completed.

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