CN2204418Y

CN2204418Y - Photosynthetic transpiration instrument

Info

Publication number: CN2204418Y
Application number: CN 94213210
Authority: CN
Inventors: 赵明
Original assignee: Beijing Agricultural University
Current assignee: Beijing Agricultural University; Beijing University of Agriculture
Priority date: 1994-06-03
Filing date: 1994-06-03
Publication date: 1995-08-02
Anticipated expiration: 2004-06-03

Abstract

The utility model belongs to a connection type printing photosynthetic transpiration instrument with four measuring modes and 24 characters. The photosynthetic transpiration instrument is suitable for measuring the indexes of photosynthetic rate, transpiration rate, air hole impedance, environmental factors, etc., of single plant leaf and a group opened and closed circuit. The instrument is connected into one body by an infrared CO2 analyzer, a leaf chamber or an assimilatory box and a measurement-control device through lines, wherein, the leaf chamber is an opened and closed circuit; the assimilatory box is adjustable; a front panel of the measurement-control device is provided with a liquid display screen, 18 operating keys and a 24-character printer; a rear panel is provided with a background light switch. The photosynthetic transpiration instrument can arbitrarily select four measuring modes, and can immediately print out results in farms. The utility model has visual and clear display, and simple and practical operation.

Description

Photosynthetic transpiration instrument

The utility model is to measure the invention that photosynthetic rising analyzer printed in four kinds of mensuration mode 24 characters of interconnection system that plant uses about a kind of.

The rising instrument of plant photosynthesis, domestic this product of not developing, the state-of-the-art product in international market are the portable photosynthesis analytic systems of Li-6200 type that U.S. Li-cor company produces.This instrument places the closed circuit mensuration leaf of single leaf indoor the warm and humid sensor of light, and change-over circuit and CPU center processor are put into supervising device, and measurement and control center is positioned at infrared CO ₂On the analyser, leaf chamber, infrared CO ₂Analyser and measurement and control center are integral structures, and measurement and control center's front panel is equipped with 640 * 120mm, two row measures the signal display screen, and 40 operating keys are housed.The subject matter that this instrument exists is:

1, the leaf chamber can only be carried out the closed circuit a kind of mode of single leaf and measured, and can not accomplish that single leaf, the four kinds of mensuration modes in colony open and close road select arbitrarily.

2, in field test, can not print the result immediately, need go back to the laboratory and specially join printer and be connected and could export the result.

3, display screen is little, can only show two line number words, can not holographicly show, is not easy to the data contrast, does not have background light device, cloudy day and night time operation difficulty, and 40 of operating keys, the user is difficult for grasping, and goes wrong easily.

The purpose of this utility model provides four kinds of mensuration mode 24 characters of a kind of interconnection system and prints photosynthetic rising instrument, it can accomplish that single leaf, colony open and close the four kinds of mensuration modes in road and select arbitrarily, can print measurement result immediately in the field, the clear demonstration of perfect information, instrument easy and simple to handle.

The purpose of this utility model is achieved in that a kind of photosynthetic rising instrument, comprises an infrared CO ₂Analyser is characterised in that, this apparatus preparation has a leaf chamber and scalable assimilation box, a measure and control device, leaf chamber or assimilation box, measure and control device and infrared CO ₂Analyser connects by circuit, and the assimilation chamber volume of described leaf chamber is 75～150cm ³, leaf chamber loam cake is 15～30cm ², a leaf chamber handle is arranged, the warm and humid change line sending of light road is housed in the handle, assimilation chamber and leaf chamber handle are fixed as one, and transmission circuit is communicated with sensor, and assimilation chamber loam cake connects with leaf chamber base spring by the interlock handle, and the locking of loam cake fastens on leaf chamber handle; Comprise central processor CPU, multi-way switch, analog to digital converter, expansion RAM data-carrier store and the expansion photosynthetic mensuration storage card of EPROM in the measure and control device and patrol and seize circuit that 24 character printer, LCD and keyboard link to each other with Interface ﹠ Bus.

Photosynthetic rising instrument, the bearing that it is characterized in that assimilation box are a rectangle plate washer, are inserted with column on four jiaos, and bearing, column and top are connected with straight-bar by threeway and fix with screw for four jiaos, and the outside is covered with the polyester plastics hyaline membrane.

Photosynthetic rising instrument is characterized in that in the measure and control device, in the central authorities of turnover panel the full matrix liquid-crystal display screen of 1320 * 390mm is housed, and the concentric shafts that the display screen link tester is crossed turnover panel top fixed mount undercut is connected with the measure and control device bus, and the bias light switch is housed on the rear panel.

Advantage of the present utility model and good effect:

1, leaf chamber design of the present utility model has taken into account and has opened and closed the fixed requirement of drive test, is equipped with assimilation box again, can select four kinds of mensuration modes in open and close road of single leaf, colony.

2, dispose measure and control device in the utility model, made the data result of field observation print immediately.Measure and control device turnover panel display screen is designed to giant-screen, makes data holographicly to show, and is furnished with Background apparatus, is convenient to measure at cloudy day or night.Keyboard also is reduced to 18 by 40 original keys simultaneously, has simplified operating performance.And with low cost, only be 1/5 of Li-6200 type.

The utility model has following accompanying drawing:

Fig. 1 the utility model one-piece construction synoptic diagram

Fig. 2 leaf cell structure synoptic diagram

Fig. 3 assimilation box structural representation

Fig. 4 measure and control device external structure synoptic diagram

Fig. 5 measure and control device inner structure block diagram

Below in conjunction with description of drawings, elaborate embodiment of the present utility model, but the utility model is not limit by this embodiment.

Fig. 1 shows the one-piece construction synoptic diagram of this instrument, and (1) is that leaf chamber or assimilation box (4) are by circuit and infrared CO among the figure ₂Analyser (2) measurement and control center (3) connects.

Fig. 2 is a leaf cell structure synoptic diagram.Assimilation chamber (5) is fixed as one with screw with leaf chamber handle (6), is equipped with in the leaf chamber handle to become line sending road (7), and circuit is communicated with assimilation interior sensor (8), and assimilation chamber (5) volume is 75～150cm ³, assimilation chamber loam cake (9) is 15～30cm ², assimilation chamber loam cake (9) connects with leaf chamber base spring (11) by interlock handle (10), and the locking card (12) of assimilation chamber loam cake (9) is fixed on the leaf chamber handle (6).

Fig. 3 is the assimilation box structural representation.Bottom plate washer (13) length and width is 1 * 0.6～0.9m, the high 0.2～3.3m of column bar (14), and four jiaos at bearing (13) top connects with straight-bar (16) by threeway (15), is screwed.

Fig. 4 is a measure and control device external structure synoptic diagram.The length of turnover panel (17) is 2120 * 950 * 12mm, the length and width of display screen (18) is 1320 * 390mm, turnover panel (17) connects with Surveillance center's upside (20) by support (19), display screen (18) is positioned at turnover panel (17) central authorities, 24 character printer (21) are positioned at the front panel upper left side, operating key (22) is equipped with in the front panel lower right side, and rear panel is equipped with the bias light switch.

Fig. 5 is a measure and control device inner structure synoptic diagram.

The principle of work of this instrument is as follows: the sensor and the corresponding amplifying circuit of the indoor dress photosynthetically active radiation of leaf (PAR), leaf room temperature, leaf temperature, relative humidity (RH), and with CO ₂Analyser is 5 analog measurement, be 0～5V output, be input to the multiway analog switch (4097) of two 8 passages by the high impedance match circuit, and after carrying out the difference amplification, deliver to A/D converter (A/D 574) respectively according to the order of sequence, change analog measurement into the corresponding digital amount, read for single-chip microcomputer (8031).8031 pass through EPROM(27256) storage card and RAM(6264) the data storage support carries out interface parameter input, data acquisition, result and calculates, and further realize keyboard operation by programmable I/C interface (8255) and keyboard/display interface (8279), DMF 5005N display screen menu-guided and perfect information show, and the mini-printer of 24 characters carries out selectable four kinds of modes and prints, and is applicable to that the open and close drive test of the single leaf of plant, colony is decided the mensuration of indexs such as photosynthetic rate, transpiration rate, pore impedance and environmental factor.

Claims

1, a kind of photosynthetic rising instrument comprises an infrared CO ₂Analyser is characterized in that, this apparatus preparation has a leaf chamber and scalable assimilation box, a measure and control device, leaf chamber or assimilation box, measure and control device and infrared CO ₂Analyser connects by circuit, and the assimilation chamber volume of described leaf chamber is 75-150cm ³, leaf chamber loam cake is 15-30cm ², a leaf chamber handle is arranged, the warm and humid change line sending of light road is housed in the handle, assimilation chamber and leaf chamber handle are fixed as one, and transmission circuit is communicated with sensor, and assimilation chamber loam cake connects with leaf chamber base spring by the interlock handle, and the locking of loam cake fastens on leaf chamber handle; Comprise central processor CPU, multi-way switch, analog to digital converter, expansion RAM data-carrier store and expansion photosynthetic mensuration storage card of EPROM and logical circuit in the measure and control device, 24 character printer, LCD and keyboard link to each other with Interface ﹠ Bus.

2, photosynthetic rising instrument according to claim 1, the bearing that it is characterized in that described assimilation box is a rectangle plate washer, be inserted with column on 4 jiaos, bearing, column and top are connected with straight-bar by threeway and fix with screw for four jiaos, and the outside is covered with the polyester plastics hyaline membrane.

3, photosynthetic rising instrument according to claim 1, it is characterized in that in the described measure and control device, in the central authorities of turnover panel the full matrix liquid-crystal display screen of 1320 * 390mm is housed, the concentric shafts that the display screen link tester is crossed turnover panel top fixed mount undercut is connected with the measure and control device bus, and the bias light switch is housed on the rear panel.