CN111965309A - Portable plant photosynthetic rate detector and method thereof - Google Patents

Portable plant photosynthetic rate detector and method thereof Download PDF

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CN111965309A
CN111965309A CN202010952677.0A CN202010952677A CN111965309A CN 111965309 A CN111965309 A CN 111965309A CN 202010952677 A CN202010952677 A CN 202010952677A CN 111965309 A CN111965309 A CN 111965309A
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chamber
solenoid valve
blade
way solenoid
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CN111965309B (en
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杨春勇
刘剑
邓芳
侯金
陈少平
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South Central Minzu University
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Abstract

本发明公开了一种便携式植物光合速率检测仪及其方法,涉及植物生理机能检测领域。本检测仪包括叶片(00),设置有叶室(10)、差分气路单元(20)、电源(30)、传感器阵列(40)和微控制平台(50);叶片(00)置于叶室(10)内,叶室(10)和差分气路单元(20)连通,在差分气路单元(20)的测量室(23)内设置有传感器阵列(40),传感器阵列(40)和微控制平台(50)连接;电源(30)给传感器阵列(40)和微控制平台(50)提供能源。与现有技术相比,本发明具有下列优点和积极效果:①可以快速、精确和实时地测定植株在不同的CO2浓度、光照强度和温湿度的环境条件下的光合速率;②结构轻巧,携带方便,适用范围广;③支持户外使用。

Figure 202010952677

The invention discloses a portable plant photosynthetic rate detector and a method thereof, and relates to the field of plant physiological function detection. The detector includes a blade (00), which is provided with a blade chamber (10), a differential air circuit unit (20), a power supply (30), a sensor array (40) and a micro-control platform (50); the blade (00) is placed on the blade Inside the chamber (10), the leaf chamber (10) is communicated with the differential air circuit unit (20), and a sensor array (40) is arranged in the measurement chamber (23) of the differential air circuit unit (20), the sensor array (40) and The micro-control platform (50) is connected; the power supply (30) provides energy to the sensor array (40) and the micro-control platform (50). Compared with the prior art, the present invention has the following advantages and positive effects: 1. the photosynthetic rate of plants can be measured quickly, accurately and in real time under different environmental conditions of CO 2 concentration, light intensity and temperature and humidity; 2. lightweight structure, It is easy to carry and has a wide range of applications; ③It supports outdoor use.

Figure 202010952677

Description

便携式植物光合速率检测仪及其方法Portable plant photosynthetic rate detector and method thereof

技术领域technical field

本发明涉及植物生理机能检测领域,尤其涉及一种便携式植物光合速率检测仪及其方法。The invention relates to the field of plant physiological function detection, in particular to a portable plant photosynthetic rate detector and a method thereof.

背景技术Background technique

光合作用是绿色植物生长发育的一种重要特征,测量植物的光合速率是判断植物生理特征的一项重要指标,植物的光合速率可以作为判断植物适宜的生活环境的一项数据。Photosynthesis is an important feature of the growth and development of green plants. Measuring the photosynthetic rate of plants is an important indicator for judging the physiological characteristics of plants. The photosynthetic rate of plants can be used as a data for judging the suitable living environment of plants.

植物进行光合作用时,从环境中吸收CO2和水,生成碳水化合物并释放氧气。在植物进行光合作用时,环境中的光照强度和CO2浓度是影响植物光合速率的主要因素,还有环境的温湿度也会影响植物的光合速率。When plants perform photosynthesis, they absorb CO2 and water from the environment, produce carbohydrates and release oxygen. When plants perform photosynthesis, the light intensity and CO 2 concentration in the environment are the main factors that affect the photosynthetic rate of plants, and the temperature and humidity of the environment will also affect the photosynthetic rate of plants.

传统的测量植物的光合速率的方法有:The traditional methods of measuring the photosynthetic rate of plants are:

1、改良半叶法,该方法须将叶片与植株分离,然后测量,操作复杂,实验误差大,而且无法实时测量植物的光合速率。1. Improved half-leaf method. This method must separate the leaves from the plants, and then measure them. The operation is complicated, the experimental error is large, and the photosynthetic rate of plants cannot be measured in real time.

2、气体体积变化法,这种方法只能测量一些小型植株,适用范围有限。2. The gas volume change method, this method can only measure some small plants, and the scope of application is limited.

3、红外CO2分析法,这种方法受到测量场地影响,无法测量户外植株的光合速率。3. Infrared CO 2 analysis method, this method is affected by the measurement site and cannot measure the photosynthetic rate of outdoor plants.

发明内容SUMMARY OF THE INVENTION

本发明的目的是克服现有技术存在的缺点和不足,提供一种便携式植物光合速率检测仪及其方法,可以快速、精确和实时地测定植株在不同的CO2浓度、光照强度和温湿度的环境条件下的光合速率。The purpose of the present invention is to overcome the shortcomings and deficiencies existing in the prior art, and to provide a portable plant photosynthetic rate detector and a method thereof, which can quickly, accurately and real-time measure the changes of plants in different CO2 concentrations, light intensity and temperature and humidity. Photosynthetic rate under ambient conditions.

本发明的目的是这样实现的:The object of the present invention is achieved in this way:

本检测仪包括叶片,设置有叶室、差分气路单元、电源、传感器阵列和微控制平台;The detector includes a blade, which is provided with a blade chamber, a differential air circuit unit, a power supply, a sensor array and a micro-control platform;

被测叶片置于叶室内,叶室和差分气路单元连通,在差分气路单元的测量室内设置有传感器阵列,传感器阵列和微控制平台连接;The blade to be tested is placed in the blade chamber, the blade chamber is connected with the differential air circuit unit, a sensor array is arranged in the measurement chamber of the differential air circuit unit, and the sensor array is connected with the micro-control platform;

电源给传感器阵列和微控制平台提供能源。The power supply provides energy to the sensor array and the microcontroller platform.

与现有技术相比,本发明具有下列优点和积极效果:Compared with the prior art, the present invention has the following advantages and positive effects:

①可以快速、精确和实时地测定植株在不同的CO2浓度、光照强度和温湿度的环境条件下的光合速率;①The photosynthetic rate of plants can be measured quickly, accurately and in real time under different environmental conditions of CO 2 concentration, light intensity and temperature and humidity;

②结构轻巧,携带方便,适用范围广;②The structure is light, easy to carry, and has a wide range of applications;

③支持户外使用。③Support outdoor use.

附图说明Description of drawings

图1是本检测仪的结构示意图;Fig. 1 is the structural representation of this detector;

图2是叶室的结构示意图。Figure 2 is a schematic diagram of the structure of the leaf chamber.

图中:In the picture:

00—叶片;00—leaf;

10—叶室,10—leaf chamber,

1A—上叶室,1B—下叶室,1C—螺杆,1A—upper chamber, 1B—lower chamber, 1C—screw,

11—进气口,12—出气口;11—air inlet, 12—air outlet;

20—差分气路单元,20—differential air circuit unit,

21—第1三通电磁阀,22—第2三通电磁阀,23—测量室,24—气泵;21—the first three-way solenoid valve, 22—the second three-way solenoid valve, 23—measurement chamber, 24—air pump;

30—电源;30—Power supply;

40—传感器阵列,40—sensor array,

41—CO2传感器,42—温湿度传感器,43—气体流速传感器,41—CO 2 sensor, 42—temperature and humidity sensor, 43—gas flow rate sensor,

44—气体压强传感器;44—gas pressure sensor;

50—微控制平台,50—Micro control platform,

51—ADC采样模块,52—泵速调控板,53—无线发射模块。51—ADC sampling module, 52—pump speed control board, 53—wireless transmitting module.

具体实施方式Detailed ways

下面结合附图和实施例对本发明作进一步说明。The present invention will be further described below with reference to the accompanying drawings and embodiments.

一、检测仪1. Detector

1、总体1. Overall

如图1,本发明包括被测对象——叶片00,设置有叶室10、差分气路单元20、电源30、传感器阵列40和微控制平台50;As shown in FIG. 1 , the present invention includes an object to be measured, a blade 00, which is provided with a blade chamber 10, a differential air circuit unit 20, a power supply 30, a sensor array 40 and a micro-control platform 50;

被测叶片00置于叶室10内,叶室10和差分气路单元20连通,在差分气路单元20的测量室23内设置有传感器阵列40,传感器阵列40和微控制平台50连接;The blade 00 to be tested is placed in the blade chamber 10, the blade chamber 10 is communicated with the differential air circuit unit 20, a sensor array 40 is arranged in the measurement chamber 23 of the differential air circuit unit 20, and the sensor array 40 is connected with the micro-control platform 50;

电源30给传感器阵列40和微控制平台50提供能源。Power supply 30 provides power to sensor array 40 and microcontroller platform 50 .

2、功能部件2. Functional components

0)叶片000) Blade 00

1)叶室101) Leaf chamber 10

如图2,叶室10包括依次连接的上叶室1A、下叶室1B和螺杆1C,上叶室1A设有进气口11和出气口12,在上叶室1A的玻璃片上画有均匀网格,用来测量被测植株叶片过小而无法填满整个叶室时的叶片面积,每一小格面积为1mm2,网格总面积为900mm2;下叶室1B与螺杆1C连接,通过旋转螺杆1C来控制下叶室1A上下移动,在上、下叶室1A、1B的接触部分贴有橡皮垫用来优化叶室10气密性和保护被测植株叶片00被夹时不会破损。As shown in FIG. 2, the leaf chamber 10 includes an upper leaf chamber 1A, a lower leaf chamber 1B and a screw 1C which are connected in sequence. The upper leaf chamber 1A is provided with an air inlet 11 and an air outlet 12, and the glass sheet of the upper leaf chamber 1A is drawn with uniform The grid is used to measure the leaf area of the tested plant when the leaves are too small to fill the entire leaf chamber. The area of each small grid is 1 mm 2 , and the total grid area is 900 mm 2 ; The lower leaf chamber 1A is controlled to move up and down by rotating the screw 1C, and rubber pads are attached to the contact parts of the upper and lower leaf chambers 1A and 1B to optimize the air tightness of the leaf chamber 10 and protect the tested plant leaves 00 from being clamped. damaged.

叶室10还设置有控制手柄,通过控制手柄控制叶室10的开合。The leaf chamber 10 is also provided with a control handle, and the opening and closing of the leaf chamber 10 is controlled by the control handle.

2)差分气路单元202) Differential air circuit unit 20

如图1,差分气路单元20包括第1三通电磁阀21、第2三通电磁阀22、测量室23和气泵24;As shown in FIG. 1 , the differential air circuit unit 20 includes a first three-way solenoid valve 21 , a second three-way solenoid valve 22 , a measurement chamber 23 and an air pump 24 ;

互为连通的第1三通电磁阀21和第2三通电磁阀22分别连接叶室10的进气口11和出气口12,第2三通电磁阀22、测量室23和气泵24依次连通;The first three-way solenoid valve 21 and the second three-way solenoid valve 22 which are in communication with each other are respectively connected to the air inlet 11 and the air outlet 12 of the leaf chamber 10, and the second three-way solenoid valve 22, the measuring chamber 23 and the air pump 24 are connected in sequence. ;

在测量室23中设置传感器阵列40。A sensor array 40 is arranged in the measurement chamber 23 .

3)电源303) Power 30

如图1,电源30为大容量锂离子可充电池,输入电压为12.6VDC,输出电压为12.6~10.8VDC,容量6800mAh。As shown in FIG. 1 , the power source 30 is a large-capacity lithium-ion rechargeable battery, the input voltage is 12.6VDC, the output voltage is 12.6-10.8VDC, and the capacity is 6800mAh.

4)传感器阵列404) Sensor array 40

如图1,传感器阵列40包括CO2传感器41、温湿度传感器42、气体流速传感器43和气体压强传感器44。As shown in FIG. 1 , the sensor array 40 includes a CO 2 sensor 41 , a temperature and humidity sensor 42 , a gas flow rate sensor 43 and a gas pressure sensor 44 .

(1)CO2传感器41(1) CO 2 sensor 41

为通用的传感器,测量CO2的浓度。A general purpose sensor that measures the concentration of CO2 .

(2)温湿度传感器42(2) Temperature and humidity sensor 42

为通用的传感器,测量温湿度。It is a general-purpose sensor that measures temperature and humidity.

(3)气体流速传感器43(3) Gas flow rate sensor 43

为通用的传感器,测量气体流速。A general purpose sensor that measures gas flow rates.

(4)气体压强传感器44(4) Gas pressure sensor 44

为通用的传感器,测量气体压强。It is a general-purpose sensor that measures gas pressure.

5)微控制平台505) Micro Control Platform 50

如图1,微控制平台50选用MSP430F149作为CPU,来处理数据和控制其他模块;内嵌有ADC采样模块51、泵速调控板52和无线发射模块 53。As shown in Figure 1, the micro control platform 50 selects MSP430F149 as the CPU to process data and control other modules;

接收经过ADC采样模块51处理的数字信号,控制泵速调控板52使气泵24工作,将数据传送至无线发射模块53。Receive the digital signal processed by the ADC sampling module 51 , control the pump speed control board 52 to make the air pump 24 work, and transmit the data to the wireless transmission module 53 .

3、工作机理3. Working mechanism

通过传感器阵列中的CO2传感器、气体流速传感器、大气压强传感器和温湿度传感器与ADC采样模块相连,将检测叶室内的CO2浓度、空气流速、大气压强和温湿度转化为电信号,然后通过AD模数转换,将电信号转化为微控制平台可识别的数字信号,微控制平台对数字信号进行分析处理,进而控制气泵工作,并用蓝牙无线发射模块将数据发送到智能移动设备上生成植物光合速率曲线图。The CO2 sensor, gas flow rate sensor, atmospheric pressure sensor and temperature and humidity sensor in the sensor array are connected to the ADC sampling module, and the CO2 concentration, air flow rate, atmospheric pressure and temperature and humidity in the detected leaf chamber are converted into electrical signals, and then passed through the AD Analog-to-digital conversion converts electrical signals into digital signals that can be recognized by the micro-control platform. The micro-control platform analyzes and processes the digital signals, and then controls the air pump to work, and uses the Bluetooth wireless transmitter module to send the data to the smart mobile device to generate the photosynthetic rate of plants. Graph.

二、检测方法2. Detection method

①对检测系统初始化:①Initialize the detection system:

Ⅰ、开启电源30,让各模块正常工作;Ⅰ. Turn on the power supply 30 to make each module work normally;

Ⅱ、设置第1三通电磁阀21的端口a、b和第2三通电磁阀22的端口e、d导通,使气流在气路中按照虚线箭头方向流动,即使气流按第1三通电磁阀21、第2三通电磁阀22、测量室23和气泵24依次连接的方向流动;II. Set the ports a and b of the first three-way solenoid valve 21 and the ports e and d of the second three-way solenoid valve 22 to conduct, so that the air flows in the direction of the dashed arrow in the air path, even if the air flows in the direction of the first three-way solenoid valve The solenoid valve 21, the second three-way solenoid valve 22, the measuring chamber 23 and the air pump 24 flow in the direction in which they are connected in sequence;

Ⅲ、使传感器阵列40正常工作,并将各传感器的检测数据传入微控制平台40,微控制平台40根据大气压强传感器43和气体流速传感器42检测的数据,来调控气泵24工作,控制差分气路单元20内气体流速;III. Make the sensor array 40 work normally, and transmit the detection data of each sensor to the micro-control platform 40. The micro-control platform 40 regulates the work of the air pump 24 according to the data detected by the atmospheric pressure sensor 43 and the gas flow rate sensor 42, and controls the differential gas the gas flow rate in the circuit unit 20;

Ⅳ、CO2传感器41测得数据经过卡尔曼算法滤波处理和ADC采样模块51数模转换,通过蓝牙无线发射模块53上传至智能移动设备上,若测得CO2浓度随时间基本不变,即系统初始化完成;IV. The data measured by the CO 2 sensor 41 is filtered and processed by the Kalman algorithm and digital-to-analog conversion by the ADC sampling module 51, and uploaded to the smart mobile device through the Bluetooth wireless transmission module 53. If the measured CO 2 concentration is basically unchanged with time, that is, System initialization is complete;

②系统初始化完成之后,开始检测被测植株的光合速率,包括以下几个步骤:②After the system initialization is completed, start to detect the photosynthetic rate of the tested plant, including the following steps:

ⅰ、按下叶室10开合控制手柄按钮,夹紧叶片00,若叶片00接触面积太小无法填满整个叶室10,则数出叶室10中叶片所占的上叶室1A玻璃片上的小网格格数,每一个小网格面积为1mm2,估算出叶片00的面积,若叶片00可以填满整个叶室10,则叶片00面积可视为整个叶室面积1600mm2ⅰ. Press the opening and closing control handle button of the leaf chamber 10 to clamp the leaf 00. If the contact area of the leaf 00 is too small to fill the entire leaf chamber 10, count the upper chamber 1A glass sheet occupied by the leaves in the leaf chamber 10. The number of small grids, each small grid area is 1mm 2 , the area of the blade 00 is estimated, if the blade 00 can fill the entire leaf chamber 10, the area of the blade 00 can be regarded as the entire leaf chamber area 1600mm 2 ;

ⅱ、设置第1三通电磁阀21的端口a、c导通,端口b关闭,第2三通电磁阀22的端口d、f导通,端口e关闭,使气流在气路中按照实线线箭头方向流动,即使气流按第1三通电磁阀21、叶室10、第2三通电磁阀22、测量室23和气泵24依次连接的方向流动;ii. Set the ports a and c of the first three-way solenoid valve 21 to be turned on, the port b to be closed, the ports d and f of the second three-way solenoid valve 22 to be turned on, and the port e to be closed, so that the air flow in the gas path follows the solid line Flow in the direction of the line arrow, even if the airflow flows in the direction in which the first three-way solenoid valve 21, the leaf chamber 10, the second three-way solenoid valve 22, the measuring chamber 23 and the air pump 24 are connected in sequence;

ⅲ、保持测量一段时间,打开智能移动设备的蓝牙功能,接收检测仪通过蓝牙发送的数据,收集一段时间的数据即可生成植物光合速率曲线图。3. Keep measuring for a period of time, turn on the Bluetooth function of the smart mobile device, receive the data sent by the detector through Bluetooth, and collect the data for a period of time to generate a plant photosynthetic rate curve.

Claims (7)

1.一种便携式植物光合速率检测仪,包括叶片(00),其特征在于:1. A portable plant photosynthetic rate detector, comprising a blade (00), characterized in that: 设置有叶室(10)、差分气路单元(20)、电源(30)、传感器阵列(40)和微控制平台(50);A leaf chamber (10), a differential air circuit unit (20), a power supply (30), a sensor array (40) and a micro-control platform (50) are provided; 叶片(00)置于叶室(10)内,叶室(10)和差分气路单元(20)连通,在差分气路单元(20)的测量室(23)内设置有传感器阵列(40),传感器阵列(40)和微控制平台(50)连接;The blade (00) is placed in the blade chamber (10), the blade chamber (10) is communicated with the differential air circuit unit (20), and a sensor array (40) is arranged in the measurement chamber (23) of the differential air circuit unit (20) , the sensor array (40) is connected with the micro-control platform (50); 电源(30)给传感器阵列(40)和微控制平台(50)提供能源。A power supply (30) provides energy to the sensor array (40) and the microcontroller platform (50). 2.按权利要求1所述的便携式植物光合速率检测仪,其特征在于:2. by the portable plant photosynthetic rate detector according to claim 1, it is characterized in that: 所述的叶室(10)包括上叶室(1A)、下叶室(1B)和螺杆(1C),上叶室(1A)设有进气口(11)和出气口(12),在上叶室(1A)玻璃片上画有均匀网格,用来测量被测植株叶片过小而无法填满整个叶室时的叶片面积,每一小格面积为1mm2,网格总面积为900mm2;下叶室(1B)与螺杆(1C)连接,通过旋转螺杆(1C)来控制下叶室(1A)上下移动,在上、下(1A、1B)叶室接触部分贴有橡皮垫用来优化叶室气密性和保护被测植株叶片(00)被夹时不会破损;The vane chamber (10) includes an upper vane chamber (1A), a lower vane chamber (1B) and a screw (1C), and the upper vane chamber (1A) is provided with an air inlet (11) and an air outlet (12). A uniform grid is drawn on the glass sheet of the upper leaf chamber (1A), which is used to measure the leaf area of the tested plant when the leaves are too small to fill the entire leaf chamber. The area of each small grid is 1 mm 2 , and the total grid area is 900 mm. 2 ; The lower chamber (1B) is connected with the screw (1C), and the lower chamber (1A) is controlled to move up and down by rotating the screw (1C), and a rubber pad is attached to the contact part of the upper and lower (1A, 1B) chambers To optimize the air tightness of the leaf chamber and protect the tested plant leaves (00) from being damaged when they are clamped; 叶室(10)还设置有控制手柄,通过控制手柄控制叶室10的开合。The leaf chamber (10) is also provided with a control handle, through which the opening and closing of the leaf chamber 10 is controlled. 3.按权利要求1所述的便携式植物光合速率检测仪,其特征在于:3. by the described portable plant photosynthetic rate detector of claim 1, it is characterized in that: 所述的差分气路单元(20)包括第1三通电磁阀(21)、第2三通电磁阀(22)、测量室(23)和气泵(24);The differential air circuit unit (20) includes a first three-way solenoid valve (21), a second three-way solenoid valve (22), a measuring chamber (23) and an air pump (24); 互为连通的第1三通电磁阀(21)和第2三通电磁阀(22)分别连接叶室(10)的进气口(11)和出气口(12),第2三通电磁阀(22)、测量室(23)和气泵(24)依次连通;The first three-way solenoid valve (21) and the second three-way solenoid valve (22) that communicate with each other are respectively connected to the air inlet (11) and the air outlet (12) of the leaf chamber (10), and the second three-way solenoid valve (22), the measuring chamber (23) and the air pump (24) are communicated in sequence; 在测量室(23)中设置传感器阵列(40)。A sensor array (40) is arranged in the measurement chamber (23). 4.按权利要求1所述的便携式植物光合速率检测仪,其特征在于:4. by the described portable plant photosynthetic rate detector of claim 1, it is characterized in that: 所述的电源(30)为大容量锂离子可充电池,输入电压为12.6VDC,输出电压为12.6~10.8VDC,容量6800mAh。The power supply (30) is a large-capacity lithium-ion rechargeable battery with an input voltage of 12.6VDC, an output voltage of 12.6-10.8VDC, and a capacity of 6800mAh. 5.按权利要求1所述的便携式植物光合速率检测仪,其特征在于:5. by the portable plant photosynthetic rate detector according to claim 1, it is characterized in that: 所述的传感器阵列(40)包括CO2传感器(41)、温湿度传感器(42)、气体流速传感器(43)和气体压强传感器(44)。The sensor array (40) includes a CO 2 sensor (41), a temperature and humidity sensor (42), a gas flow rate sensor (43) and a gas pressure sensor (44). 6.按权利要求1所述的便携式植物光合速率检测仪,其特征在于:6. by the described portable plant photosynthetic rate detector of claim 1, it is characterized in that: 所述的微控制平台(50)选用MSP430F149,作为CPU来处理数据和控制其他模块;内嵌有ADC采样模块(51)、泵速调控板(52)和无线发射模块(53)The micro-control platform (50) selects MSP430F149 as a CPU to process data and control other modules; an ADC sampling module (51), a pump speed control board (52) and a wireless transmission module (53) are embedded in it 接收经过ADC采样模块(51)处理的数字信号,控制泵速调控板(52)使气泵(24)工作,将数据传送至无线发射模块(53)。Receive the digital signal processed by the ADC sampling module (51), control the pump speed control board (52) to make the air pump (24) work, and transmit the data to the wireless transmission module (53). 7.基于权利要求1、2、3、4 、5或6所述便携式植物光合速率检测仪的检测方法,其特征在于:7. based on the detection method of the described portable plant photosynthetic rate detector of claim 1,2,3,4,5 or 6, it is characterized in that: ①对检测系统初始化:①Initialize the detection system: Ⅰ、开启电源,让各模块正常工作;Ⅰ. Turn on the power and let each module work normally; Ⅱ、设置第1三通电磁阀(21)的端口a、b和第2三通电磁阀(22)的端口e、d导通,使气流按第1三通电磁阀(21)、第2三通电磁阀(22)、测量室(23)和气泵(24)依次连接的方向流动;Ⅱ. Set the ports a and b of the first three-way solenoid valve (21) and the ports e and d of the second three-way solenoid valve (22) to conduct, so that the air flow is in accordance with the first three-way solenoid valve (21) and the second three-way solenoid valve (21). The three-way solenoid valve (22), the measuring chamber (23) and the air pump (24) flow in the direction in which they are connected in sequence; Ⅲ、传感器阵列(40)正常工作并将各传感器检测数据传入微控制平台(50),微控制平台(50)根据气体流速传感器(42)和大气压强传感器(43)检测的数据,来调控气泵(24)工作,控制差分气路单元(20)内气体流速;III. The sensor array (40) works normally and transmits the detection data of each sensor to the micro-control platform (50), and the micro-control platform (50) regulates and controls according to the data detected by the gas flow rate sensor (42) and the atmospheric pressure sensor (43). The air pump (24) works to control the gas flow rate in the differential air circuit unit (20); Ⅳ、CO2传感器(41)测得数据经过卡尔曼算法滤波处理和ADC采样模块(51)数模转换,通过蓝牙无线发射模块(53)上传至智能移动设备上,若测得CO2浓度随时间基本不变,即系统初始化完成;IV. The data measured by the CO 2 sensor (41) is filtered and processed by the Kalman algorithm and digital-to-analog conversion by the ADC sampling module (51), and uploaded to the smart mobile device through the Bluetooth wireless transmission module (53). The time is basically unchanged, that is, the system initialization is completed; ②系统初始化完成之后,开始检测被测植株的光合速率,包括以下几个步骤:②After the system initialization is completed, start to detect the photosynthetic rate of the tested plant, including the following steps: ⅰ、按下叶室(10)开合控制手柄按钮,夹紧叶片(00),若叶片(00)接触面积太小无法填满整个叶室(10),则数出叶室(10)中叶片所占的上叶室玻璃片上的小网格格数,每一个小网格面积为1mm2,估算出叶片面积,若叶片可以填满整个叶室(10),则叶片(00)的面积可视为整个叶室面积1600mm2;ⅰ. Press the opening and closing control handle button of the leaf chamber (10) to clamp the blade (00). If the contact area of the blade (00) is too small to fill the entire leaf chamber (10), count out the The number of small grids on the glass sheet of the upper chamber occupied by the blade, and the area of each small grid is 1mm 2 . Calculate the area of the blade. If the blade can fill the entire chamber (10), the area of the blade (00) can be It is regarded as the entire leaf chamber area of 1600mm2; ⅱ、设置第1三通电磁阀(21)的端口a、c导通,端口b关闭,第2三通电磁阀(22)的端口d、f导通,端口e关闭,使气流在气路中按照第1三通电磁阀(21)、叶室(10)、第2三通电磁阀(22)、测量室(23)和气泵(24)依次连接的方向流动;ii. Set the ports a and c of the first three-way solenoid valve (21) to be turned on, the port b to be closed, the ports d and f of the second three-way solenoid valve (22) to be turned on, and the port e to be closed, so that the air flows in the air path. flow in the direction in which the first three-way solenoid valve (21), the leaf chamber (10), the second three-way solenoid valve (22), the measuring chamber (23) and the air pump (24) are connected in sequence; ⅲ、保持测量一段时间,打开智能移动设备的蓝牙功能,接收检测仪通过蓝牙发送的数据,并生成植物光合速率曲线图。iii. Keep measuring for a period of time, turn on the bluetooth function of the smart mobile device, receive the data sent by the detector through bluetooth, and generate a graph of plant photosynthetic rate.
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