CN117589678A

CN117589678A - Spectrum detection incubator

Info

Publication number: CN117589678A
Application number: CN202311579437.0A
Authority: CN
Inventors: 梁浩; 李金武; 马帅; 楼雄伟; 王楠; 易晓梅; 郑辛煜; 闵志强; 董晨
Original assignee: Zhejiang A&F University ZAFU
Current assignee: Zhejiang A&F University ZAFU
Priority date: 2023-11-24
Filing date: 2023-11-24
Publication date: 2024-02-23

Abstract

The invention discloses a spectrum detection incubator, which belongs to the technical field of spectrum detection and comprises an incubator, a driving control module and a sample rack. The spectrum detection incubator designed by the invention can effectively reduce the influence of the external environment on the spectrum detection precision, simulate the laboratory environment, control the temperature of the sample and the spectrum detector within a reasonable range, effectively improve the detection precision, and the designed sample rack can store a plurality of samples, realize the batch detection of the plurality of samples and improve the spectrum detection efficiency. Aiming at different requirements, the invention is further improved on the basis of the original design, and the designed miniature spectrometer is arranged in a sliding way, so that the distance between a lens of the spectrum detector and a sample bottle is controllable, and the detection precision is improved; the heat conduction seat adopts an arc-shaped heat conduction sheet structure, and meanwhile, the fan is designed, so that the air in the thermostatic chamber slowly flows, and the temperature distribution of the internal space of the thermostatic chamber is more uniform.

Description

Spectrum detection incubator

Technical Field

The invention relates to the technical field of spectrum detection, in particular to a spectrum detection incubator.

Background

Along with the development of spectrum detection technology, the miniaturized portable spectrum detector has the advantages of small volume and low price, and is widely applied to various fields such as fruit, dairy products, agricultural waste monitoring and the like. However, the accuracy of the spectrometer is easily affected by external environment, and the stability of the micro spectrometer is poorer for the purposes of compression volume and cost, so when spectrum data with higher accuracy is required to be acquired, for example, when a spectrum model for measuring nutrient content of agricultural wastes at different temperatures is established and calibrated by using a thermal infrared spectrometer, a sample still needs to be sent to a laboratory for detection, but for substances rich in microorganisms such as excrement, fermentation liquor and the like, the components of the sample change with time in the transportation process, and thus the detection result is affected.

Although Ning Zhijiang and the like design a strong anti-interference infrared spectrometer signal processing circuit and an infrared spectrometer (202210430202.4), and filter interference through a designed filter circuit to improve stability, the method does not fundamentally solve the problem of environmental interference.

Aiming at the problems, the portable spectrum detection device capable of shielding external interference and having higher precision is very necessary, so that the spectrum detection precision can be effectively improved, and the application range of the spectrum detector is further widened.

Disclosure of Invention

In order to solve the above-mentioned problems, the present invention is directed to a spectrum detection incubator.

The aim of the invention can be achieved by the following technical scheme:

the utility model provides a spectrum detection thermostated container, includes thermostated container, drive control module and sample frame, the thermostated container includes the box, and open in the box has the thermostatic chamber, and the thermostatic chamber bottom is provided with the heat conduction seat, and the thermostated container is used for simulating laboratory environment, and its top is provided with drive control module and is used for controlling the thermostated container work, is provided with detachable sample frame in the drive control module and is used for depositing the sample bottle and prevents the sample bottle rotation.

As further description of the scheme of the invention, an internal heat conducting ring is arranged in the heat conducting seat, a rotating cavity is arranged between the internal heat conducting ring and the heat conducting seat, a detection port communicated with the inside of the heat conducting ring is formed in the side face of the heat conducting seat, a support frame is arranged on the side face of the heat conducting seat, the support frame is fixed on the inner wall of a thermostatic chamber, a micro spectrometer is arranged on the support frame, a light source is arranged in the internal heat conducting ring, and a temperature sensor is arranged on the side face of the micro spectrometer;

the heat conduction seat side is provided with the fan, and the fan bottom is provided with the slope base, and the slope base is fixed at the thermostatic chamber inner wall.

As a further description of the scheme of the invention, the driving control module comprises a bottom plate arranged at the upper part of the box body, a box cover is arranged on the bottom plate, a sample hole is formed in the box cover, a microprocessor is arranged on the bottom plate, a rotating frame is rotatably connected to the position, close to the middle, of the bottom plate, a driven toothed ring is arranged at the upper end of the rotating frame, a plurality of circumferentially distributed light transmission holes are formed in the rotating frame, an alignment block is arranged on the inner wall of the rotating frame, a positioning block is arranged at the position, close to the bottom, of the alignment block, a certain elasticity is provided, a motor is arranged on the side of the rotating frame, the motor is fixed on the inner wall of the box cover, a driving gear is arranged at the output end of the motor, the driving gear is meshed with the driven toothed ring, and a control panel is arranged at the position, close to the side surface, of the bottom plate.

Through the technical scheme, the control panel can input instructions, the microprocessor can control the motor to start, the rotating frame is driven to intermittently rotate through gear meshing, and when the rotating frame stops, the microprocessor controls the micro spectrometer and the light source to start for spectrum detection.

As a further description of the scheme of the invention, the sample rack comprises a shading positioning cover, an upper positioning rack is arranged below the shading positioning cover, an upper positioning groove is arranged on the side surface of the upper positioning rack, the upper positioning groove is matched with the alignment block, a plurality of sample positioning grooves are formed in the lower surface of the upper positioning rack, a bearing base is arranged below the upper positioning rack, a plurality of connecting ribs are arranged between the bearing base and the upper positioning rack, a base positioning groove is arranged on the side surface of the bearing base, and a plurality of auxiliary positioning seats are arranged on the upper surface of the bearing base;

the auxiliary positioning seat is in sliding connection with the bearing base, an arc-shaped seat is arranged at the upper part of the auxiliary positioning seat, a limiting ring is arranged at the position, close to the lower end, of the auxiliary positioning seat, a spring is arranged at the middle part of the auxiliary positioning seat, and a detachable sample bottle is arranged between the auxiliary positioning seat and the sample positioning groove;

the sample bottle is characterized in that a bottle cover is arranged on the upper portion of the sample bottle, a positioning block is arranged at a position, close to the bottle cover, of the bottle body, the positioning block is matched with the sample positioning groove, two symmetrically distributed light-transmitting planes are arranged on the sample bottle, an arc-shaped positioning bottom surface is arranged at the bottom of the sample bottle, and the arc-shaped positioning bottom surface is matched with the arc-shaped seat.

Through the technical scheme, the sample bottle with the sample can be pressed down by the auxiliary positioning seat, then the positioning block is matched with the sample positioning groove, the auxiliary positioning seat is used for fixing the sample bottle on the sample frame under the action of spring force, and after the sample bottle is installed, the sample frame can be installed into the driving control module through the matching of the upper positioning groove, the base positioning groove and the alignment block and synchronously moves along with the rotating frame.

As a further description of the scheme of the invention, a semiconductor temperature control module is arranged below the heat conduction seat, the annular part of the heat conduction seat is composed of a plurality of arc-shaped heat conduction sheets, an internal heat conduction ring arranged inside the heat conduction seat is composed of a plurality of arc-shaped heat conduction sheets, a light source is arranged inside the heat conduction seat, a light source lifting column is arranged below the light source, the light source lifting column is arranged on the heat conduction seat, a detection port is formed in the side face of the heat conduction seat, and a second detection port is formed in the detection port.

As further description of the scheme of the invention, four telescopic supporting rods are arranged on the lower surface of the supporting frame, a lifting cylinder is arranged on the lower surface of the supporting frame, a chute is formed on the upper surface of the supporting frame, a movable miniature spectrometer is arranged in the chute, two telescopic cylinders are arranged on the side surface of the miniature spectrometer, which is far away from the lens, and are fixed on the inner wall of the chute, and a limiting plate is arranged at one end of the chute, which is far away from the telescopic cylinders.

As a further description of the solution of the present invention, the control system includes:

the control panel is used for inputting preset temperature, reading temperature information and spectrum detection data;

the microprocessor is used as a control center and used for receiving data of the temperature sensor and input information of the control panel and controlling the semiconductor temperature control module and the driving module to work;

the temperature control driving circuit converts PWM signals output by the microprocessor (22) into voltage signals to control the semiconductor temperature control module;

the power supply provides energy for the work of the whole device;

the driving module controls the motor to drive the sample holder 3 to rotate and controls the micro spectrometer 14 to work;

and the temperature sensor is used for monitoring temperature information of the sample and the spectrometer.

As a further description of the solution of the present invention, the working steps of the control system are as follows:

step S1: the control panel inputs preset temperature (T1), and the temperature sensor monitors spectrometer temperature (T2) and sample temperature (T3);

step S2: the microprocessor 22 outputs different PWM signals according to the inputted values of T1, T2 and T3;

step S3: the temperature control driving circuit converts the PWM signal into a voltage signal and controls the semiconductor temperature control module to work;

step S4: when the microprocessor judges that the difference values of T2 and T3 and T1 meet the conditions, a driving module is started;

step S5: the driving module controls the motor to drive the sample frame 3 to rotate, and controls the spectrometer to work and collect the spectral information of the sample.

As a further description of the solution of the present invention, the step S2 of determining the microprocessor to output different PDM signals according to the inputted values of T1, T2 and T3 is as follows:

step S21: inputting a preset temperature T1 and measured temperatures T2 and T3;

step S22: when (T1-T2) (T1-T3) is not less than 0, the step S23 is entered; when (T1-T2) (T1-T3) < 0, proceeding to step S24;

step S23: the value closest to T1 in T2 and T3 is given to T, when T is smaller than T1, a PWM signal of full-power heating is output, and when T is larger than T1, a PWM signal of full-power refrigeration is output; then, the process proceeds to step S25;

step S24: giving a value far from T1 in T2 and T3 to T, calculating a difference value of T-T1, inputting the difference value into a PID algorithm, outputting a PWM signal, and then entering step S25;

step S25: returning to step S21.

As a further description of the scheme of the present invention, in the step S4, the condition for starting the driving module is that T1 is between T2 and T3, and the absolute values of the difference values between T2 and T3 and T1 are smaller than 3 (|T2-T1| < 3, |T3-T1| < 3).

Through the technical scheme, when the temperature sensor monitors that the spectrometer temperature (T2) and the sample temperature (T3) are distributed on one side of the preset temperature (T1), the step S23 is used for judging that the values of T2 and T3 are lower than T1, a full-power heating mode is adopted, and when the values of T2 and T3 are higher than T1, a full-power refrigerating mode is adopted, so that the spectrometer temperature and the sample temperature quickly return to the two sides of the preset temperature, and the temperature control time is shortened.

After T2 and T3 return to the two sides of T1, the PID control mode is entered, the value far away from T1 in T2 and T3 is given to T, the difference value of T-T1 is input into the PID algorithm, PWM signals are output, and the temperatures of T2 and T3 are kept near T1.

The invention has the beneficial effects that:

1. the spectrum detection incubator designed by the invention can effectively reduce the influence of the external environment on the spectrum detection precision, simulate the laboratory environment, control the temperature of the sample and the spectrum detector within a reasonable range, effectively improve the detection precision, and the designed sample rack can store a plurality of samples, can realize batch detection of the plurality of samples and effectively improve the spectrum detection efficiency.

2. Aiming at different requirements, the invention further improves and optimizes on the original basis, and improves the number of samples detected at one time by designing a sample frame with a multilayer structure, a liftable light source and a micro spectrometer; the designed miniature spectrometer is arranged in a sliding way, so that the distance between a lens of the spectrum detector and a sample bottle is controllable, and the detection precision is improved; the heat conducting seat adopts an arc-shaped heat conducting sheet structure, and meanwhile, the fan is designed, so that air in the thermostatic chamber slowly flows, and the temperature distribution of the internal space of the thermostatic chamber is more uniform.

Drawings

For a clearer description of embodiments of the invention or of the solutions of the prior art, the drawings that are needed in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings are only some embodiments of the invention, from which, without inventive effort, other drawings can be obtained for a person skilled in the art;

FIG. 1 is a schematic diagram of an explosive structure of the present invention;

FIG. 2 is a schematic diagram of the structure of the present invention;

FIG. 3 is a schematic view of the structure of the components within the oven;

FIG. 4 is a schematic diagram of a drive control module;

FIG. 5 is an enlarged schematic view of a drive control module part A;

FIG. 6 is a schematic view of the structure of the sample holder;

FIG. 7 is a schematic view of the underside of the sample holder;

FIG. 8 is a schematic view of the structure of the auxiliary positioning seat;

FIG. 9 is a schematic view of the structure of a sample bottle;

FIG. 10 is a schematic diagram of the installation of a wireless thermometer;

FIG. 11 is a hardware system block diagram of a spectrum sensing oven;

FIG. 12 is a temperature control flow chart of a spectrum sensing oven;

FIG. 13 is a PID control flow diagram;

FIG. 14 is a schematic view of the improved thermostatic chamber assembly;

FIG. 15 is a cross-sectional view of a modified thermally conductive holder;

FIG. 16 micro spectrometer drive assembly;

fig. 17 is a schematic view of a fan structure.

The reference numerals in the figures illustrate:

1. a constant temperature box; 11. a case; 111. a thermostatic chamber; 12. a heat conduction seat; 121. an inner thermally conductive ring; 122. a rotating chamber; 123. a detection port; 124. a second detection port; 125. a semiconductor temperature control module; 126. a light source; 1261. a light source lifting column; 13. a support frame; 131. a telescopic support rod; 132. a chute; 133. a telescopic cylinder; 134. a limiting plate; 135. a lifting cylinder; 14. a micro spectrometer; 15. a temperature sensor; 16. a fan; 161. a tilting base; 2. a drive control module; 21. a bottom plate; 22. a microprocessor; 23. a case cover; 231. a sample well; 24. a motor; 25. a drive gear; 26. a rotating frame; 261. a light transmission port; 262. aligning the block; 2621. a positioning block; 27. a driven toothed ring; 28. a control panel; 3. a sample holder; 31. a shading positioning cover; 32. a load-bearing base; 321. a base positioning groove; 33. an upper positioning frame; 331. an upper positioning groove; 332. a sample positioning groove; 34. a sample bottle; 341. arc positioning the bottom surface; 342. a light-transmitting plane; 343. a positioning block; 344. a bottle cap; 35. an auxiliary positioning seat; 351. an arc-shaped seat; 352. a spring, 353, a stop collar; 36. a wireless thermometer; 37. and (5) connecting ribs.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The utility model provides a spectrum detects thermostated container, this structure of thermostated container includes thermostated container 1 and sets up the drive control module 2 in the thermostated container 1 top, is provided with detachable sample frame 3 on the drive control module 2

The incubator 1 is used for simulating a laboratory environment and improving spectrum detection precision.

The driving control module 2 is used for controlling the spectrum detection incubator to work, storing detection data and driving the sample holder 3 to rotate.

The sample holder 3 is used for mounting the sample bottles and preventing the sample bottles 34 from rotating.

As shown in fig. 1, 2 and 3, the incubator 1 comprises a box body 11, a thermostatic chamber 111 is arranged in the box body 11, a heat conducting seat 12 is arranged at the bottom of the thermostatic chamber 111, an internal heat conducting ring 121 is arranged in the heat conducting seat 12, a rotating cavity 122 is arranged between the internal heat conducting ring 121 and the heat conducting seat 12, a semiconductor temperature control module is arranged below the heat conducting seat 12, a detection port 123 communicated with the interior of the heat conducting ring 121 is arranged on the side surface of the heat conducting seat 12, a support frame 13 is arranged on the side surface of the heat conducting seat 12, the support frame 13 is fixed at the bottom of the thermostatic chamber 111, a micro spectrometer 14 is arranged on the support frame 13, a probe of the micro spectrometer 14 is opposite to the detection port 123, a light source matched with the micro spectrometer 14 is arranged in the internal heat conducting ring 121, a temperature sensor 15 is arranged on the side surface of the micro spectrometer 14, and the temperature sensor 15 can monitor the temperature of the micro spectrometer 14 in real time.

As shown in fig. 1, 2, 4 and 5, the driving control module 2 includes a bottom plate 21 disposed on an upper surface of the box 11, a box cover 23 is disposed on the bottom plate 21, a sample hole 231 is disposed on the box cover 23, a microprocessor 22 is disposed on an upper surface of the bottom plate 21, a preset program is disposed in the microprocessor 22, and the operation of the spectrum detection incubator can be controlled, the laboratory environment is simulated, and the spectrum detection precision is improved. The position of the bottom plate 21, which is close to the middle part, is rotationally connected with a rotating frame 26, the rotating frame 26 can rotate in a rotating cavity 122, a driven toothed ring 27 is arranged on the outer side of the upper end of the rotating frame 26, a plurality of circumferentially distributed light transmission openings 261 are formed in the rotating frame 26, alignment blocks 262 are arranged at positions of the inner wall of the rotating frame 26, which are close to the upper part and the bottom, a positioning block 2621 is arranged at positions of the alignment blocks 262, which are close to the bottom, the positioning block 2621 has certain elasticity, a motor 24 is arranged on one side of the rotating frame 26, which is far away from the microprocessor 22, the motor 24 is fixed on the inner wall of the box cover 23, a driving gear 25 is arranged at the output end of the motor 24, the driving gear 25 is matched with the driven toothed ring 27, the microprocessor 22 controls the motor 24 to rotate, and the rotating frame 26 is controlled to rotate through gear transmission. The position of the bottom plate 21 close to the side is provided with a control panel 28, the control panel 28 is provided with a display screen and control keys, and staff sets the temperature in the incubator 1 and the motor rotation speed through the display and the control keys and refers to the spectrum detection data and the temperature in the incubator 1.

As shown in fig. 1, 6, 7, 8, 9 and 10, the sample holder 3 comprises a shading positioning cover 31, an upper positioning frame 33 is arranged below the shading positioning cover 31, an upper positioning groove 331 is arranged on the side surface of the upper positioning frame 33, the upper positioning groove 331 is matched with an alignment block 262, a plurality of circumferentially distributed sample positioning grooves 332 are formed in the lower surface of the upper positioning frame 33, a bearing base 32 is arranged below the upper positioning frame 33, a plurality of circumferentially distributed connecting ribs 37 are arranged between the bearing base 32 and the upper positioning frame 33, a base positioning groove 321 is arranged on the side surface of the bearing base 32, the base positioning groove 321 is matched with the alignment block 262, a plurality of circumferentially distributed auxiliary positioning seats 35 are arranged on the upper surface of the bearing base 32, the auxiliary positioning seats 35 are in sliding connection with the bearing base 32, an arc-shaped seat 351 is arranged on the upper portion of the auxiliary positioning seat 35, a limiting ring 353 is arranged at a position close to the lower end, and a spring 352 is arranged in the middle of the auxiliary positioning seat 35.

A detachable sample bottle 34 is arranged between the auxiliary positioning seat 35 and the sample positioning groove 332, a bottle cap 344 is arranged on the upper portion of the sample bottle 34, a positioning block 343 is arranged at a position, close to the bottle cap 344, of the bottle body, and the positioning block 343 and the sample positioning groove 332 are matched to prevent the sample bottle 34 from rotating on the sample frame 3. The middle part of sample bottle 34 is provided with two symmetrical distribution's printing opacity planes 342, and the light beam of light source transmission passes two printing opacity planes 342 and is received by miniature spectrum appearance 14, and printing opacity plane 342 can effectively avoid the light source to take place refraction and scattering when passing sample bottle 34 and influence the testing result, and sample bottle 34 bottom is provided with arc location bottom surface 341, and arc location bottom surface 341 cooperates with arc seat 351, and the position that printing opacity plane 342 is close to the lower part is provided with wireless thermoscope 36, and wireless thermoscope 36 is as sample temperature sensor real-time monitoring sample temperature.

When the sample bottle 34 is put into the sample holder 3, the arc-shaped positioning bottom surface 341 is matched with the arc-shaped seat 351, the auxiliary positioning seat 35 is pressed down, the positioning block 343 is matched with the sample positioning groove 332, and the auxiliary positioning seat 35 is used for fixing the sample bottle 34 under the action of the spring 352 to prevent the sample bottle 34 from autorotation.

When the sample holder 3 is installed in the spectrum detection incubator, the sample holder 3 is first vertically installed in the sample hole 231, and then the upper positioning groove 331 and the base positioning groove 321 are respectively aligned with the alignment block 262, and when the sample holder 3 main body is installed in the turret 26, the alignment block 262 is respectively engaged with the upper positioning groove 331 and the base positioning groove 321, and the sample holder 3 is prevented from shaking due to a certain elasticity of the positioning block 2621.

The working flow of the incubator is as follows:

s1, filling a sample to be tested into a sample bottle 34, and sequentially placing the sample into a sample frame 3;

s2, placing the sample bottle 34 with the wireless thermometer 36 at a position closest to the upper positioning groove 331;

s3, placing the sample holder 3 into the incubator 1, and inputting a preset value (25 ℃ in the present example) through the control panel 28

S4, the microprocessor 22 controls the semiconductor temperature control module to adjust the temperature through temperature information transmitted back by the temperature sensor;

s5, when the measured values of the two temperature sensors meet the temperature control, the microprocessor 22 controls the motor 24 to start, and drives the sample holder 3 to intermittently rotate through gear transmission;

s6, intermittently starting the micro spectrometer 14 and the light source 126, and measuring and storing spectral data of the sample in the sample bottle 34;

and S7, completing the measurement of the spectrum data, and stopping the operation of the incubator.

Referring to fig. 11, 12 and 13, the hardware control system of the spectrum detection incubator is shown in fig. 11, and the control system includes:

and the control panel is used for inputting preset temperature, reading temperature information and spectrum detection data.

The microprocessor is used as a control center and receives data of the temperature sensor and input information of the control panel to control the semiconductor temperature control module and the driving module to work.

The temperature control driving circuit converts the PWM pulse signal (PWM signal for short) output by the microprocessor 22 into a voltage signal to control the semiconductor temperature control module.

And the power supply provides energy for the work of the whole device.

And the driving module controls the motor to drive the sample frame 3 to rotate and controls the micro spectrometer 14 to work.

The working steps of the control system are as follows:

step S5: the driving module controls the motor to drive the sample frame 3 to rotate, and controls the spectrometer to work and collect the spectral information of the sample;

in the step S2, after inputting the values T1, T2 and T3, the microprocessor 22 outputs different PWM signals according to the temperature control flowchart of fig. 12.

In the step S4, the condition for starting the driving module is that T1 is between T2 and T3, and the absolute values of the differences between T2 and T3 and T1 are smaller than 3 (|t2-t1| < 3, |t3-t1| < 3).

As shown in fig. 12, the microprocessor outputs different PDM signals according to the inputted values of T1, T2 and T3, and the determination steps are as follows:

step S23: giving the value closest to T1 in T2 and T3 to T, comparing the values of T and T1, outputting a full-power heating PWM signal when T is smaller than T1, and outputting a full-power refrigerating PWM signal when T is larger than T1; then, the process proceeds to step S25;

step S25: returning to step S21.

The step S22 judges that the spectrometer temperature T2 and the sample temperature T3 are distributed on two sides or the same side of the preset temperature T1. When T2 and T3 are distributed on the same side of T1, step S23 is entered, the nearest value of T1 and T2 in T3 is given to T, when T is larger than T1, the spectrometer and the sample are proved to be higher than T1, at the moment, a PWM signal of full-power refrigeration is output, and the temperature is quickly reduced; when T is smaller than T1, the spectrometer and the sample are proved to be lower than T1, a PWM signal for full-power heating is output at the moment, and the temperature is quickly increased, so that the temperature T2 of the spectrometer and the temperature T3 of the sample quickly return to the two sides of the preset temperature T1;

when the spectrometer temperature T2 and the sample temperature T3 are distributed on two sides of the preset temperature T1, the PID control mode of the step S24 is entered, the values far away from T1 in the temperatures T2 and T3 are given to T, the difference value of the T-T1 is taken as input, and the PWM output is calculated through a PID algorithm. The values of T2 and T3 are stabilized around T1.

The flow chart of the PID algorithm in step S24 is shown in fig. 13, the difference is input into the PID calculation link, and the PWM signal is obtained through calculation, at this time, the output power of the semiconductor temperature control module is close to the preset temperature T1.

The temperature of the sample and the spectrometer is stabilized near the preset temperature T1 through continuous circulation control, and when the temperature difference between the temperature of the sample and the temperature of the spectrometer and the preset temperature is smaller than a preset value (the temperature is set to be 3 ℃), the spectrum detection can be carried out.

Example 1

When spectrum data is required to be acquired by field operation, the device can be brought to a working place, liquid samples to be measured are filled into the sample bottles 34, then the sample bottles 34 are sequentially placed into the sample frame 3, and the position of the left side of the sample frame 3 closest to the upper positioning groove 331, where the first sample bottle is stored, is recorded as 1, and is sequentially ordered clockwise. When placing the sample bottle 34, the sample bottle 34 with the wireless thermometer 36 is placed at the position 1, and then the sample holder 3 with the sample is placed in the incubator 1, and the sample bottle 34 with the wireless thermometer 36 faces the micro-spectrometer 14. The thermostat 1 is started by inputting the preset temperature T1 value through the button on the control panel 28, at this time, the microprocessor 22 takes the temperature information returned by the two temperature sensors as input, and controls the working mode of the semiconductor temperature control module according to the preset program until the temperature values returned by the two temperature sensors meet the conditions, then the sample holder 3 is driven to intermittently rotate clockwise, when the sample bottle 34 moves between the light source and the micro spectrometer 14, the light transmitting plane 342 just faces the micro spectrometer, at this time, the microprocessor 22 controls the micro spectrometer 14 and the light source on the inner side of the internal heat conducting ring 121 to cooperate, so as to finish sample detection and store data until all samples are detected.

Example 2

When scientific research, calibration of an online spectrum detection device, establishment of an online spectrum prediction model and the like are required to acquire a large amount of spectrum data with higher precision on site, the device can be improved as follows, so that errors are further eliminated, and the detection precision is improved.

As shown in fig. 14, 15 and 16, the components in the oven can be modified as follows:

the semiconductor temperature control module 125 is arranged below the heat conduction seat 12, the annular part of the heat conduction seat 12 is composed of a plurality of arc heat conduction sheets distributed in circumference, the inner heat conduction ring 121 arranged inside the heat conduction seat 12 is composed of a plurality of arc heat conduction sheets distributed in circumference, the heat conduction seat 12 is provided with the light source 126 near the center position, the light source 126 is provided with the light source lifting column 1261 below the light source 126, the light source lifting column 1261 is arranged on the heat conduction seat 12, the side surface of the heat conduction seat 12 is provided with the detection port 123, and the detection port 123 is provided with the second detection port 124.

The lower surface of the support frame 13 is provided with four telescopic support rods 131, the central position of the lower surface of the support frame 13 is provided with a lifting cylinder 135, the support frame 13 can be driven to move up and down, the upper surface of the support frame 13 is provided with a chute 132, a slidable miniature spectrometer 14 is arranged in the chute 132, one side of the miniature spectrometer 14, which is far away from a lens, is provided with two telescopic cylinders 133, the telescopic cylinders 133 are fixed on the inner wall of the chute 132, and one end of the chute 132, which is far away from the telescopic cylinders 133, is provided with a limiting plate 134.

A fan 16 is arranged on one side of the heat conduction seat 12 far away from the supporting frame 13, an inclined base 161 is arranged at the bottom of the fan 16, the inclined base 161 is fixed at the bottom of the thermostatic chamber 111, so that the fan 16 has a certain inclination angle,

compared with the first embodiment, the improved device optimizes the detection link, can better simulate the laboratory environment and perform spectrum detection. When the spectrum detection is carried out in a laboratory, the distance between the spectrum detector and the sample is very close, so that the influence of light after passing through the sample can be reduced. The invention adopts a rotating structure for detection, and because of the shape of the sample bottle 34, the sample bottle 34 and the spectrometer have larger gaps in the detection position to influence the detection precision in order to avoid collision between the sample bottle 34 and the lens of the micro spectrometer 14 when the sample frame 3 rotates. Therefore, the micro spectrometer 14 is slidingly arranged, when the sample bottle 34 is just opposite to the lens of the micro spectrometer 14, the telescopic cylinder 133 is controlled to move the micro spectrometer 14 to the position of the limiting plate 134, at this time, the distance between the lens of the micro spectrometer 14 and the light transmission plane 342 of the sample bottle 34 reaches a preset value, when the detection is completed, the telescopic cylinder 133 is controlled to move the micro spectrometer 14 backwards, the motor 24 drives the sample frame 3 to rotate, the next sample bottle 34 is just opposite to the micro spectrometer 14, and the sample spectrum information in each sample bottle 34 can be accurately measured by repeating the above actions.

Example 3

Compared with the first embodiment, the third embodiment is optimized in terms of improving the uniformity of the temperature distribution inside the thermostatic chamber 111 and the number of sample detections. The sample rack 3 can adopt a multi-layer structure, and a plurality of groups of upper positioning frames 33, bearing bases 32 and accessory parts thereof are arranged on the sample rack 3, so that the number of sample bottles 34 is increased, meanwhile, the supporting frame 13 is arranged to be of a lifting structure, the light source 126 inside the heat conduction seat 12 is arranged to be of a lifting structure, and after one layer of sample is measured, the sample rack 3 and the light source 126 can be driven to be lifted to a proper position for detecting a second layer of sample.

In order to ensure uniform temperature change in the constant temperature chamber 111, the heat conducting base 12 is arranged into an annular structure formed by arc heat conducting sheets, a certain gap is reserved, the fan 16 is designed, the fan blades of the fan 16 rotate slowly, stable air flow is formed in the constant temperature chamber 1, and more uniform temperature distribution in the constant temperature chamber 111 is ensured.

The beneficial effects are as follows:

the spectrum detection incubator designed by the invention can effectively reduce the influence of external temperature change on spectrum detection precision, controls the temperature in the incubator through a PID temperature control program, simulates the laboratory environment, controls the temperature of a sample and a spectrum detector within a reasonable range, effectively improves the detection precision, can store a plurality of samples by the designed sample rack 3, can realize the detection of the plurality of samples by controlling the temperature once, and effectively improves the spectrum detection efficiency.

Meanwhile, in order to meet different requirements, the invention is further optimized, and the number of samples detected at one time is increased by designing the sample holder 3, the liftable light source 126 and the micro spectrometer 14 with a multi-layer structure; the designed miniature spectrometer 14 is arranged in a sliding way, so that the distance between a lens of the spectrum detector and a sample bottle is controllable, and the detection precision is improved; the heat conducting base 12 is designed into an arc-shaped heat conducting sheet structure, and meanwhile, the fan 16 is designed, so that air in the thermostatic chamber 111 can slowly flow, and the temperature distribution of the inner space of the thermostatic chamber 111 is more uniform.

The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims.

Claims

1. The utility model provides a spectrum detection thermostated container, includes thermostated container (1), drive control module (2) and sample frame (3), its characterized in that, thermostated container (1) is including box (11), and box (11) are inside to be opened has thermostatic chamber (111), and thermostatic chamber (111) bottom is provided with heat conduction seat (12), and thermostated container (1) top is provided with drive control module (2), is provided with detachable sample frame (3) in drive control module (2).

2. The spectrum detection incubator according to claim 1, wherein an inner heat conducting ring (121) is arranged inside the heat conducting seat (12), a rotating cavity (122) is arranged between the inner heat conducting ring (121) and the heat conducting seat (12), a detection port (123) communicated with the inner part of the heat conducting ring (121) is formed in the side face of the heat conducting seat (12), a supporting frame (13) is arranged on the side face of the heat conducting seat (12), the supporting frame (13) is fixed on the inner wall of the thermostatic chamber (111), a micro spectrometer (14) is arranged on the supporting frame (13), a light source is arranged inside the inner heat conducting ring (121), and a temperature sensor (15) is arranged on the side face of the micro spectrometer (14);

a fan (16) is arranged on the side of the heat conduction seat (12), an inclined base (161) is arranged at the bottom of the fan (16), and the inclined base (161) is fixed on the inner wall of the thermostatic chamber (111).

3. The spectrum detection incubator according to claim 1, wherein the driving control module (2) comprises a bottom plate (21) arranged on the upper portion of the case body (11), a case cover (23) is arranged on the bottom plate (21), a sample hole (231) is formed in the case cover (23), a microprocessor (22) is arranged on the bottom plate (21), a rotating frame (26) is rotatably connected to the position, close to the middle, of the bottom plate (21), a driven toothed ring (27) is arranged at the upper end of the rotating frame (26), a plurality of circumferentially distributed light transmitting openings (261) are formed in the rotating frame (26), an alignment block (262) is arranged on the inner wall of the rotating frame (26), a positioning block (2621) is arranged at the position, close to the bottom, of the alignment block (262), the positioning block (2621) has certain elasticity, a motor (24) is arranged on the side of the rotating frame (26), the motor (24) is fixed on the inner wall of the case cover (23), a driving gear (25) is arranged at the output end of the motor (24), the driving gear (25) is meshed with the driven toothed ring (27), and a control panel (28) is arranged at the position, close to the side of the bottom plate (21).

4. A spectrum detection incubator according to claim 3, wherein the sample holder (3) comprises a shading positioning cover (31), an upper positioning frame (33) is arranged below the shading positioning cover (31), an upper positioning groove (331) is formed in the side face of the upper positioning frame (33), a plurality of sample positioning grooves (332) are formed in the lower surface of the upper positioning frame (33) in a matched mode, a bearing base (32) is arranged below the upper positioning frame (33), a plurality of connecting ribs (37) are arranged between the bearing base (32) and the upper positioning frame (33), a base positioning groove (321) is formed in the side face of the bearing base (32), and a plurality of auxiliary positioning seats (35) are formed in the upper surface of the bearing base (32);

the auxiliary positioning seat (35) is in sliding connection with the bearing base (32), an arc-shaped seat (351) is arranged on the upper portion of the auxiliary positioning seat (35), a limiting ring (353) is arranged at a position, close to the lower end, of the auxiliary positioning seat (35), a spring (352) is arranged in the middle of the auxiliary positioning seat (35), and a detachable sample bottle (34) is arranged between the auxiliary positioning seat (35) and the sample positioning groove (332);

the sample bottle is characterized in that a bottle cap (344) is arranged on the upper portion of the sample bottle (34), a positioning block (343) is arranged at a position, close to the bottle cap (344), of the bottle body, the positioning block (343) is matched with the sample positioning groove (332), two symmetrically distributed light-transmitting planes (342) are arranged on the sample bottle (34), an arc-shaped positioning bottom surface (341) is arranged at the bottom of the sample bottle (34), and the arc-shaped positioning bottom surface (341) is matched with the arc-shaped base (351).

5. The spectrum detection incubator according to claim 2, wherein a semiconductor temperature control module (125) is arranged below the heat conduction seat (12), the annular part of the heat conduction seat (12) is composed of a plurality of arc-shaped heat conduction sheets, an inner heat conduction ring (121) arranged inside the heat conduction seat (12) is composed of a plurality of arc-shaped heat conduction sheets, a light source (126) is arranged inside the heat conduction seat (12), a light source lifting column (1261) is arranged below the light source (126), the light source lifting column (1261) is arranged on the heat conduction seat (12), a detection opening (123) is formed in the side face of the heat conduction seat (12), and a second detection opening (124) is formed in the detection opening (123).

6. The spectrum detection incubator according to claim 5, wherein four telescopic supporting rods (131) are arranged on the lower surface of the supporting frame (13), a lifting cylinder (135) is arranged on the lower surface of the supporting frame (13), a sliding groove (132) is formed in the upper surface of the supporting frame (13), a movable micro spectrometer (14) is arranged in the sliding groove (132), two telescopic cylinders (133) are arranged on the side face, away from the lens, of the micro spectrometer (14), the telescopic cylinders (133) are fixed on the inner wall of the sliding groove (132), and a limiting plate (134) is arranged at one end, away from the telescopic cylinders (133), of the sliding groove (132).

7. A control system for a spectrum sensing oven as claimed in claims 1-6, wherein said control system comprises:

the power supply provides energy for the work of the whole device;

8. The control system of a spectrum sensing oven according to claim 7, wherein the control system comprises the following steps:

step S2: the microprocessor (22) outputs different PWM signals according to the input T1, T2 and T3 values;

step S4: when the microprocessor (22) judges that the difference values of T2, T3 and T1 meet the conditions, a driving module is started;

step S5: the driving module controls the motor to drive the sample frame (3) to rotate, and controls the spectrometer to work and collect the spectral information of the sample.

9. The control system of a spectrum sensing incubator according to claim 8, wherein the microprocessor in step S2 outputs different PDM signals according to the inputted values of T1, T2 and T3, as follows:

step S25: returning to step S21.

10. The control system of a spectrum sensing incubator according to claim 8, wherein in the step S4, the condition for activating the driving module is that T1 is between T2 and T3, and absolute values of differences between T2 and T3 and T1 are smaller than 3 (|t2-t1| < 3, |t3-t1| < 3).