A detection device for the capsaicin content in chili fruits

Abstract

The present invention discloses a detection device for the capsaicin content in chili fruits, which relates to the technical field of food detection. It includes a housing with an open top and a detachable cover body, and there is a supporting member in the housing for supporting the chili to be detected. The diameter detection unit includes two ranging sensors for detecting the diameter of the chili; a light emission module, which is responsible for emitting near-infrared light and can adjust the emission angle of the light; a spectroscope for splitting the reflected light, a detection probe for converting the optical signal into an electrical signal, and a spectrometer for receiving and processing. The central controller is signal-connected to each component, and the communication module enables it to communicate with the cloud device. The cloud calculates the capsaicin content based on the diameter and spectral data and the prediction model. There is also a heat dissipation unit, an internal power supply, etc. This device can avoid interference from external light, is easy to operate and portable, can achieve rapid and accurate detection of the capsaicin content, solves the problems of expensive equipment and complex operation in the existing detection technology, and meets the industrial requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of food detection, and particularly to a detection device for the capsaicin content in chili fruits. Background Art

[0002] Chili is an important economic crop of the genus Capsicum in the Solanaceae family. With the continuous increase in the number of chili-consuming people and the continuous expansion of the consumer market, consumers' requirements for the spicy characteristics of chili are increasing day by day. They are no longer satisfied with simple classifications such as "mild spicy" and "spicy", and both producers and consumers urgently need more explicit and quantitative spicy indexes. The spiciness of chili mainly comes from capsaicin, and its content directly determines the spicy intensity and quality of chili, which is the key basis for the quality evaluation of chili. Therefore, accurately and quickly detecting the capsaicin content is crucial for the development of the chili industry.

[0003] Currently, the detection of capsaicin mainly relies on high-performance liquid chromatography (HPLC). Although HPLC has high detection accuracy, it has many disadvantages, such as: the equipment is expensive, resulting in high detection costs; the instrument is large in volume, not convenient to carry and use on-site; the operation is complex, and professional technical personnel are required for operation and maintenance, which greatly limits its application in large-scale chili production and the consumer market and cannot meet the demand for convenient detection technology. Summary of the Invention

[0004] The purpose of the present invention is to provide a detection device for the capsaicin content in chili fruits to solve the problems existing in the above-mentioned prior art and facilitate the detection of the capsaicin content in chili.

[0005] To achieve the above purpose, the present invention provides the following solution:

[0006] The present invention provides a detection device for the capsaicin content in chili fruits, including:

[0007] A housing with an open top;

[0008] A cover body covering the top of the housing, and the cover body is detachably connected to the housing, which facilitates putting the chili to be detected into the housing and taking it out;

[0009] A supporting member disposed in the housing and connected to the housing, the supporting member is used to support the chili to be detected, and a part of the chili to be detected is in contact with the supporting member and the other part is suspended; this design helps to stabilize the position of the chili to be detected and prevent it from shaking during the detection process, which may affect the detection result. At the same time, the suspended part facilitates components such as the diameter detection unit and the light emission module to accurately detect the chili and irradiate it with light, ensuring the smooth progress of the detection;

[0010] Diameter detection unit, which is used to detect the diameter of the chili peppers to be detected; the diameter detection unit includes two distance sensors located on both sides of the suspended part of the chili peppers to be detected, and the distance sensors are located inside the housing and connected to the housing; the diameter of the chili peppers to be detected can be accurately detected by the two distance sensors, and this diameter data has important reference value for the subsequent calculation of the capsaicin content, because there are differences in the distribution and detection of capsaicin content in chili peppers of different diameters. In the present invention, chili peppers of different diameters correspond to different diameter grades, and for different diameter grades, there are different near-infrared spectral prediction models for capsaicin content. Therefore, accurately obtaining the diameter data helps to improve the accuracy of capsaicin content calculation;

[0011] A light emission module arranged inside the housing, the light emission module includes a near-infrared light source, a driving device, a first fixing rod, a second fixing rod, a third fixing rod, a tension spring and a traction wire. The first fixing rod, the second fixing rod and the third fixing rod are spaced apart from top to bottom and one end of each is fixedly connected to the inner wall of the housing. The near-infrared light source is hinged to the other end of the first fixing rod. One end of the tension spring is connected to the other end of the second fixing rod and the other end is connected to the near-infrared light source. The driving device is fixedly arranged at the other end of the third fixing rod. One end of the traction wire is connected to the near-infrared light source and the other end is wound around the output shaft of the driving device. The driving device is used to wind the traction wire, and the near-infrared light source is used to emit near-infrared light; the light emission module is composed of a near-infrared light source and an angle adjustment mechanism. The angle adjustment mechanism includes a driving device, a tension spring and a traction wire. The near-infrared light source is used to emit near-infrared light, and the angle adjustment mechanism can adjust the angle of the near-infrared light; this enables the near-infrared light to adapt to chili peppers to be detected with different diameters, so that the reflected light of the chili peppers to be detected can enter the spectroscopic device and the detection probe, improving the applicability of use;

[0012] Spectroscopic device, which is arranged inside the housing and connected to the housing, and is used to split the near-infrared light reflected by the chili peppers to be detected; through the spectroscopic process, the mixed near-infrared light can be decomposed into light of different wavelengths, which is convenient for the subsequent detection probe to more accurately receive and analyze the optical signal, thereby providing more detailed spectral information for accurately detecting the capsaicin content;

[0013] Detection probe, which is arranged inside the housing and connected to the housing, and is used to receive the optical signal split by the spectroscopic device and convert the optical signal into an electrical signal;

[0014] Spectrometer, the detection probe is signal-connected to the spectrometer, and the spectrometer analyzes and processes the electrical signal transmitted by the detection probe to obtain spectral data;

[0015] A central controller, the ranging sensor, the near-infrared light source, the spectrometer and the driving device are respectively connected to the central controller in a signal connection; the central controller is respectively connected to the ranging sensor, the near-infrared light source, the spectrometer and the driving device in a signal connection, and can coordinate the work of each component to achieve precise control of the detection process. For example, according to the diameter data detected by the diameter detection unit and the required detection angle, it controls operations such as the turning on of the near-infrared light source, the operation of the driving device, and the data acquisition of the spectrometer, ensuring the automation and high efficiency of the entire detection process;

[0016] A communication module, the central controller is communicatively connected to a cloud device through the communication module, and the cloud device is used to calculate the capsaicin content of the chili pepper to be detected according to the diameter data detected by the diameter detection unit, the spectral data fed back by the spectrometer, and the near-infrared spectral prediction model of the capsaicin content stored in the cloud device. The central controller is communicatively connected to the cloud device through the communication module. The cloud device uses the diameter data detected by the diameter detection unit, the spectral data fed back by the spectrometer, and the near-infrared spectral prediction model of the capsaicin content stored therein to calculate the capsaicin content of the chili pepper to be detected. This method makes full use of the powerful computing power and rich database resources of the cloud, improving the accuracy and scientificity of capsaicin content calculation. At the same time, the setting of the communication module enables the detection device to remotely obtain the calculation results, facilitating users to understand the detection information at any time and anywhere, and expanding the application scope of the detection device.

[0017] Preferably, it further includes a heat dissipation unit, the heat dissipation unit includes a plurality of heat dissipation holes opened on the side wall of the housing and a heat dissipation fan arranged inside the housing, and all the heat dissipation holes face the heat dissipation fan. During the operation of the detection device, each component generates heat, and the heat dissipation unit can dissipate the heat in a timely and effective manner, ensuring that each component inside the device works in a suitable temperature environment, avoiding the influence of excessive temperature on the component performance and the accuracy of the detection results, and prolonging the service life of the device.

[0018] Preferably, it further includes a built-in power supply arranged inside the housing, and the built-in power supply is used to supply power to the ranging sensor, the near-infrared light source, the driving device, the detection probe, the spectrometer, the heat dissipation fan, the central controller and the communication module.

[0019] Preferably, the built-in power supply uses a storage battery. Using a storage battery as the built-in power supply enables the detection device to have an independent power supply capacity, without relying on an external power supply, enhancing the portability and flexibility of use of the device, and facilitating the detection of capsaicin content in different places.

[0020] Preferably, the near-infrared light source can emit near-infrared light with a wavelength of 900 nm to 1700 nm. The near-infrared light in this wavelength range matches the absorption characteristics of capsaicin in chili peppers, and can more effectively stimulate the absorption and reflection of near-infrared light by capsaicin, thereby obtaining more accurate spectral information and improving the accuracy of capsaicin content detection.

[0021] Preferably, there are two light-emitting modules, and the two light-emitting modules are located on both sides of the detection probe. This design can irradiate the chili peppers with near-infrared light from different angles, further improving the light coverage range on the surface of the chili peppers, obtaining more comprehensive reflected light information, thereby more accurately detecting the capsaicin content and improving the reliability of the detection results.

[0022] Preferably, several control buttons are also provided on the housing, and the control buttons are electrically connected to the central controller. Users can perform manual operations and parameter settings on the detection device through the control buttons, such as starting or stopping the detection, adjusting parameters such as the intensity and incident angle of the near-infrared light source, increasing the operation convenience and flexibility of the detection device, and meeting the needs of different users and different detection scenarios.

[0023] Preferably, the detection probe adopts a 128-element uncooled indium gallium arsenide diode array detector; using a 128-element uncooled indium gallium arsenide diode array detector as the detection probe has high sensitivity and detection accuracy, and can quickly and accurately convert the optical signal into an electrical signal, providing a reliable data basis for the subsequent analysis of the spectrometer and the processing of the central controller.

[0024] Preferably, the spectroscopic device adopts a linear variable filter. The linear variable filter can perform uniform and continuous spectroscopy on the near-infrared light, providing more precise spectral resolution, helping the detection probe to obtain more detailed spectral information, and thus improving the accuracy and reliability of capsaicin content detection.

[0025] Preferably, the supporting member adopts a rubber pad. The rubber pad has good elasticity and friction, and can better support the chili peppers to be detected, preventing the chili peppers from sliding or rolling during the detection process. At the same time, the rubber pad has a soft texture and will not damage the surface of the chili peppers, ensuring the integrity of the detection sample and being conducive to accurately detecting the capsaicin content.

[0026] The present invention has achieved the following technical effects compared with the prior art:

[0027] The detection device for the capsaicin content in chili pepper fruits of the present invention can quickly and accurately measure the capsaicin content in chili peppers by detecting the diameter of the chili peppers and the reflection spectrum of near-infrared light, and analyzing the capsaicin content in the chili peppers through the near-infrared spectroscopy technology based on characteristic wavelength modeling. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is a schematic structural diagram of a detection device for the capsaicin content in chili fruits of the present invention;

[0030] In the figure: 1. Housing; 2. Heat dissipation holes; 3. Support member; 4. Near-infrared light source; 5. Driving device; 6. Spectral splitting device; 7. Detection probe; 8. Spectrometer; 9. Built-in power supply; 10. Heat dissipation fan; 11. Control buttons; 12. USB interface; 13. Distance measuring sensor; 14. Central controller; 15. Cover body; 16. Tensile spring; 17. Traction wire; 91. Charging interface. Specific embodiments

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0032] The purpose of the present invention is to provide a detection device for the capsaicin content in chili fruits to solve the problems existing in the above-mentioned prior art and facilitate the detection of the capsaicin content in chili peppers.

[0033] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0034] As Figure 1 shown, this embodiment provides a detection device for the capsaicin content in chili fruits, including a housing 1, a cover body 15, a support member 3, a diameter detection unit, a light emission module, a spectral splitting device 6, a detection probe 7, a spectrometer 8, a central controller 14 and a communication module.

[0035] The top of the housing 1 is open. The cover body 15 is covered on the top of the housing 1, and the cover body 15 is detachably connected to the housing 1; the top of the housing 1 is open, and the cover body 15 is covered on the top of the housing 1 and is detachably connected. This design facilitates the placement and removal of the chili peppers to be detected into and out of the housing 1.

[0036] The supporting member 3 is arranged inside the housing 1 and connected to the housing 1. The supporting member 3 is used to support the chili peppers to be detected, and a part of the chili peppers to be detected is in contact with the supporting member 3 while the other part is suspended. The arrangement of the supporting member 3 helps to stabilize the position of the chili peppers to be detected and prevent them from shaking during the detection process, which may affect the detection results. At the same time, the suspended part of the chili peppers to be detected facilitates accurate detection and light irradiation of the chili peppers by components such as the diameter detection unit and the light emission module, ensuring the smooth progress of the detection.

[0037] The diameter detection unit is used to detect the diameter of the chili peppers to be detected. The diameter detection unit includes two distance measuring sensors 13 located on both sides of the suspended part of the chili peppers to be detected. The distance measuring sensors 13 are arranged inside the housing 1 and connected to the housing 1. By detecting the distances between the chili pepper surface and the distance measuring sensors 13 with the two distance measuring sensors 13, and then subtracting the two detected distances from the distance between the two distance measuring sensors 13, the diameter of the chili peppers to be detected can be accurately detected. This diameter data has important reference value for the subsequent calculation of the capsaicin content, because there are differences in the distribution and detection of capsaicin content in chili peppers of different diameters. In the present invention, chili peppers of different diameters correspond to different diameter grades, and for different diameter grades, there are different near-infrared spectral prediction models for capsaicin content. Therefore, accurately obtaining the diameter data helps to improve the accuracy of capsaicin content calculation.

[0038] The light emission module is arranged inside the housing 1. The light emission module includes a near-infrared light source 4, a driving device 5, a first fixing rod, a second fixing rod, a third fixing rod, a tension spring 16 and a traction wire 17. The first fixing rod, the second fixing rod and the third fixing rod are spaced apart from top to bottom and one end of each is fixedly connected to the inner wall of the housing 1. The near-infrared light source 4 is hinged to the other end of the first fixing rod. One end of the tension spring 16 is connected to the other end of the second fixing rod and the other end is connected to the near-infrared light source 4. The driving device 5 is fixedly arranged at the other end of the third fixing rod. One end of the traction wire 17 is connected to the near-infrared light source 4 and the other end is wound around the output shaft of the driving device 5. The driving device is used to wind the traction wire, and the near-infrared light source 4 is used to emit near-infrared light. In this embodiment, the driving device adopts a stepping motor.

[0039] The light splitting device 6 is arranged inside the housing 1 and connected to the housing 1. The light splitting device 6 is used to split the near-infrared light reflected by the chili peppers to be detected. Through the light splitting process, the mixed near-infrared light can be decomposed into light of different wavelengths, which is convenient for the subsequent detection probe 7 to more accurately receive and analyze the optical signal, thereby providing more detailed spectral information for accurately detecting the capsaicin content.

[0040] The detection probe 7 is arranged inside the housing 1 and connected to the housing 1. The detection probe 7 is used to receive the optical signal split by the light splitting device 6 and convert the optical signal into an electrical signal.

[0041] The detection probe 7 is signal-connected to the spectrometer 8; the spectrometer 8 analyzes and processes the electrical signals transmitted by the detection probe 7 to obtain spectral data.

[0042] The ranging sensor 13, the near-infrared light source 4, the spectrometer 8 and the driving device 5 are respectively signal-connected to the central controller 14.

[0043] The central controller 14 is communicatively connected to the cloud device through a communication module. The cloud device is used to calculate the capsaicin content of the chili to be detected based on the diameter data detected by the diameter detection unit, the spectral data fed back by the spectrometer 8, and the near-infrared spectral prediction model of the capsaicin content stored in the cloud device. This method makes full use of the powerful computing power and rich database resources of the cloud, improving the accuracy and scientificity of the capsaicin content calculation. At the same time, the setting of the communication module enables the detection device to remotely obtain the calculation results, facilitating users to understand the detection information anytime and anywhere, and expanding the application scope of the detection device; it should be noted that the cloud device can be a computer, a mobile phone, a tablet computer or other devices.

[0044] The detection device for the capsaicin content in chili fruits of this embodiment can quickly and accurately measure the capsaicin content in chili by detecting the diameter of the chili and the reflection spectrum of the near-infrared light, and analyzing the capsaicin content in the chili through the near-infrared spectral technology based on characteristic wavelength modeling. It should be noted that for different diameters of chili, there are corresponding emission angles of the near-infrared light. After detecting the diameter of the chili, the central controller 14 controls the driving device 5 to act, driving the near-infrared light source 4 to rotate to the required angle; and the corresponding relationship between the angle of the near-infrared light source 4 and the rotational output of the driving device 5 (i.e., the corresponding relationship between the angle of the near-infrared light source 4 and the winding length of the traction wire 17) needs to be obtained through a large number of pre-tests after the device is assembled and written into the central controller 14 to achieve precise control of the angle of the near-infrared light emitted by the near-infrared light source 4.

[0045] In an alternative embodiment of this embodiment, preferably, the detection device for the capsaicin content in chili fruits of this embodiment further includes a heat dissipation unit. The heat dissipation unit includes a plurality of heat dissipation holes 2 opened on the side wall of the housing 1 and a heat dissipation fan 10 arranged inside the housing 1, and all the heat dissipation holes 2 face the heat dissipation fan 10. During the operation of the detection device, each component generates heat, and the heat dissipation unit can timely and effectively dissipate the heat, ensuring that each component inside the device works in a suitable temperature environment, avoiding affecting the performance of the components and the accuracy of the detection results due to excessive temperature, and extending the service life of the device.

[0046] In an alternative embodiment of this example, preferably, the detection device for the capsaicin content in the chili fruit of this example further includes a built-in power source 9 disposed in the housing 1. The built-in power source 9 is used to supply power to the ranging sensor 13, the near-infrared light source 4, the driving device 5, the detection probe 7, the spectrometer 8, the central controller 14, and the communication module. And the built-in power source 9 uses a storage battery. Using a storage battery as the built-in power source 9 enables the detection device to have an independent power supply ability, without relying on an external power source, enhancing the portability and flexibility of use of the device, and facilitating the detection of capsaicin content in different places.

[0047] In an alternative embodiment of this example, preferably, the near-infrared light source 4 can emit near-infrared light with a wavelength range of 900 nm to 1700 nm. The near-infrared light in this wavelength range matches the absorption characteristics of capsaicin in chili peppers, and can more effectively stimulate the absorption and reflection of near-infrared light by capsaicin, thereby obtaining more accurate spectral information and improving the accuracy of capsaicin content detection.

[0048] In an alternative embodiment of this example, preferably, there are two light-emitting modules, and the two light-emitting modules are located on both sides of the detection probe 7. This design can irradiate the chili pepper with near-infrared light from different angles, further increasing the light coverage range on the surface of the chili pepper, obtaining more comprehensive reflected light information, and thus more accurately detecting the capsaicin content and improving the reliability of the detection results.

[0049] In an alternative embodiment of this example, preferably, a plurality of control buttons 11 are further provided on the housing 1, and the control buttons 11 are electrically connected to the central controller 14. The user can perform manual operations and parameter settings on the detection device through the control buttons 11, such as starting or stopping the detection, adjusting parameters such as the intensity and angle of the near-infrared light source 4, increasing the operation convenience and flexibility of the detection device, and meeting the needs of different users and different detection scenarios.

[0050] In an alternative embodiment of this example, preferably, the detection probe 7 uses a 128-element uncooled indium gallium arsenide diode array detector. The 128-element uncooled indium gallium arsenide diode array detector has high sensitivity and detection accuracy, and can quickly and accurately convert the optical signal into an electrical signal, providing a reliable data basis for the subsequent analysis of the spectrometer 8 and the processing of the central controller 14.

[0051] In an alternative embodiment of this example, preferably, the spectral splitting device 6 uses a linear variable filter. The linear variable filter can perform uniform and continuous spectral splitting on the near-infrared light, providing more accurate spectral resolution, helping the detection probe 7 to obtain more detailed spectral information, and thus improving the accuracy and reliability of capsaicin content detection.

[0052] In an alternative embodiment of the present embodiment, preferably, the supporting member 3 is a rubber pad. The rubber pad has good elasticity and friction, and can better support the chili peppers to be detected, preventing the chili peppers from sliding or rolling during the detection process. At the same time, the rubber pad has a soft material and will not damage the surface of the chili peppers, ensuring the integrity of the test samples and facilitating the accurate detection of the capsaicin content.

[0053] In the present embodiment, a USB interface 12 signal-connected to the central controller 14 is further provided on the housing 1. Through the USB interface 12 and a data cable, terminal devices such as mobile phones and tablet computers can be connected to realize the signal connection between the terminal device and the central controller 14, enabling the terminal device to directly obtain the relevant data obtained by the central controller 14, and the detection device for the capsaicin content in chili fruits of the present embodiment can also be controlled through the terminal device.

[0054] In the present embodiment, a charging interface 91 electrically connected to the built-in power supply 9 is further provided on the housing 1. By connecting an external power supply through the charging interface 91, the built-in power supply 9 can be charged for convenient use.

[0055] It should be noted that the near-infrared spectroscopy prediction model for capsaicin content is an existing technology in the art, so in this embodiment, the establishment and principle of the near-infrared spectroscopy prediction model for capsaicin content will not be elaborated. In addition, in this embodiment, due to the differences in the distribution and detection of capsaicin content in chili peppers with different diameters, different diameter grades are divided according to the different diameters of chili peppers in this embodiment. Specifically:

[0056] Grade 1: diameter < 1 cm;

[0057] Grade 2: 1 cm ≤ diameter < 2 cm;

[0058] Grade 3: 2 cm ≤ diameter < 3 cm;

[0059] Grade 4: 4 cm ≤ diameter < 5 cm;

[0060] Grade 5: diameter ≥ 5 cm;

[0061] For different diameter grades, different near-infrared spectroscopy prediction models for capsaicin content need to be set, that is, the near-infrared spectroscopy prediction model for capsaicin content corresponds one-to-one with the diameter grade of chili peppers. Therefore, accurately obtaining diameter data helps to improve the accuracy of capsaicin content calculation.

[0062] In the present invention, specific examples are used to illustrate the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation on the present invention.

Claims

1. A detection device for the capsaicin content in chili fruits, characterized in that, Comprising: A housing with an open top; A cover that covers the top of the housing and is detachably connected to the housing; A support member disposed within the housing and connected to the housing; the support member is made of a rubber pad; the support member is used to support the chili pepper to be detected, and a part of the chili pepper to be detected contacts the support member while the other part is suspended; A diameter detection unit for detecting the diameter of the chili pepper to be detected; the diameter detection unit includes two distance sensors located on both sides of the suspended part of the chili pepper to be detected; A light emission module disposed within the housing, the light emission module includes a near-infrared light source for emitting near-infrared light towards the chili pepper to be detected; A spectroscopic device disposed within the housing and connected to the housing, the spectroscopic device is used for spectroscopically analyzing the near-infrared light reflected by the chili pepper to be detected; A detection probe disposed within the housing and connected to the housing, the detection probe is used for receiving the optical signal spectroscopically analyzed by the spectroscopic device and converting the optical signal into an electrical signal; A spectrometer, the detection probe is signal-connected to the spectrometer; A central controller, the distance sensors, the near-infrared light source and the spectrometer are respectively signal-connected to the central controller; A communication module, the central controller is communicatively connected to a cloud device through the communication module, and the cloud device is used for calculating the capsaicin content of the chili pepper to be detected based on the diameter data detected by the diameter detection unit, the spectral data fed back by the spectrometer and the near-infrared spectral prediction model of the capsaicin content stored in the cloud device.

2. The detection device for the capsaicin content in chili fruits according to claim 1, characterized in that: It further includes a heat dissipation unit, the heat dissipation unit includes a plurality of heat dissipation holes opened on the side wall of the housing and a heat dissipation fan disposed within the housing, and all the heat dissipation holes face the heat dissipation fan.

3. The detection device for the capsaicin content in chili fruits according to claim 2, characterized in that: The light emission module further includes a driving device, a first fixing rod, a second fixing rod, a third fixing rod, a tension spring and a traction wire. The first fixing rod, the second fixing rod and the third fixing rod are spaced apart from top to bottom and are respectively fixedly connected to the inner wall of the housing at one end. The near-infrared light source is hinged to the other end of the first fixing rod. One end of the tension spring is connected to the other end of the second fixing rod and the other end is connected to the near-infrared light source. The driving device is fixedly provided at the other end of the third fixing rod. One end of the traction wire is connected to the near-infrared light source and the other end is wound around the output shaft of the driving device. The driving device is used for winding the traction wire; the driving device is signal-connected to the central controller.

4. The detection device for the capsaicin content in chili fruits according to claim 3, wherein: It further includes a built-in power source disposed within the housing, and the built-in power source is used to supply power to the distance sensors, the near-infrared light source, the driving device, the detection probe, the spectrometer, the heat dissipation fan, the central controller and the communication module.

5. The detection device for the capsaicin content in chili fruits according to claim 1, characterized in that: The near-infrared light source can emit near-infrared light with a wavelength of 900nm to 1700nm.

6. The detection device for the capsaicin content in chili fruits according to claim 3, characterized in that: There are two light-emitting modules, and the two light-emitting modules are located on both sides of the detection probe.

7. The detection device for the capsaicin content in chili fruits according to claim 1, characterized in that: A number of control buttons are also arranged on the housing, and the control buttons are electrically connected to the central controller.

8. The detection device for the capsaicin content in chili fruits according to claim 4, characterized in that: The detection probe uses a 128-element uncooled indium gallium arsenide diode array detector; the built-in power supply uses a storage battery.

9. The detection device for the capsaicin content in chili fruits according to claim 1, wherein: The light splitting device uses a linear gradient filter; the distance measuring sensor is located inside the housing and is connected to the housing.

Images