Submerged plant material mechanics automatic testing method
A technology of submerged plants and microcomputer control, which is applied in the direction of testing material strength by applying stable bending force and testing material strength by applying stable tension/pressure, which can solve the problem of reducing the timeliness and accuracy of samples, and can not be measured in real time in the field Samples, inaccurate data, etc.
Inactive Publication Date: 2014-03-26
INST OF AQUATIC LIFE ACAD SINICA
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Problems solved by technology
Advantages: economical and affordable, light and easy to carry; Disadvantages: non-automatic operation and no computer output display, large human errors make data inaccurate, less measurement indicators, unable to measure elongation rate and draw tension-elongation curve;
Advantages: automatic operation and digital display screen to avoid the influence of human error on the test results, complete measurement indicators; disadvantages: high price, bulky and not easy to carry, so that it cannot measure field samples in real time, thereby reducing the timeliness and accuracy of samples
Method used
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[0077] Below in conjunction with accompanying drawing and embodiment describe in detail:
[0078] 1. Measuring device
[0079] 1. Overall
[0080] Such as figure 1 , the measuring device is composed of a gentle clamp 10, a holder 20, a driving part 30, a ball screw 41, a ball nut 42, a track 50, a microcomputer control part 60, a power supply 70 and a photoelectric encoder 90 arranged on a frame 80 ;
[0081] The gentle clamp 10 comprises a first gentle clamp 11, a second gentle clamp 12, a third gentle clamp 13 and a bending indenter 14;
[0082] The holder 20 includes an upper holder 21 and a lower holder 22;
[0083] The driving part 30 includes a stepper motor 31 and a speed reducer 32 connected to each other;
[0084] The microcomputer control part 60 comprises a load cell 61, a microcontroller 62, a display 63 and a keyboard 64;
[0085] Its location and connection relationship are:
[0086] On the frame 80, the track 50 is vertically arranged, the load cell 61 an...
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The invention discloses a submerged plant material mechanics automatic testing device controlled by a microcomputer and a method thereof, which relate to the submerged plant mechanical performance monitoring technology. The automatic testing device comprises flexible clamps, holders, a driving portion, a ball screw, a ball nut, a rail, a microcomputer control portion, a power source and a photoelectric encoder which are arranged on a framework. The clamps include a first flexible clamp, a second flexible clamp, a third flexible clamp and a bend pressure head. The holders include an upper holder and a lower holder. The driving portion comprises a stepping motor and a speed reducer connected with each other. The microcomputer control portion comprises a force sensor, a microcontroller, a display and a keyboard. The automatic testing device is visual in display, convenient in operation, accurate in data, capable of storing a great quantity of testing data, economic, light and portable and applicable to testing tensile and bending performances of roots, stems and petioles of submerged plants, and brings convenience to handle with field samples quickly.
Description
technical field [0001] The invention relates to the monitoring technology of the mechanical properties of submerged plants, in particular to a microcomputer-controlled automatic measurement device and method for submerged plant material mechanics, which is suitable for measuring the stretching and bending properties of roots, stems and petioles of submerged plants. Background technique [0002] Submerged plants in aquatic ecosystems are subject to many mechanical stresses all the time and everywhere, such as dragging by currents, waves, ships, feeding by herbivorous birds and fishes, etc. (Vogel, 1981; Brewer & Parker, 1990). These mechanical stresses can cause mechanical damage and even uprooting of large freshwater plants (Dawson & Robinson, 1984; Usherwood, 1997; Ennos & Ball, 1997). Most submerged plants have soft branches that can swing with the waves (Koehl, 1984). When an external force acts on the submerged plant, its stem is easy to bend (Usherwood et al, 1997) so t...
Claims
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IPC IPC(8): G01N3/08G01N3/20
Inventor 祝国荣张萌曹特倪乐意
Owner INST OF AQUATIC LIFE ACAD SINICA