Sludge moisture content detection device

Abstract

The invention relates to the technical field of sludge moisture content detection, and provides a sludge moisture content detection device. A sludge moisture content detection device comprises a base, a light-transmitting module, a diffused light emitting module, a diffused light detection module and an electric control system, the light-transmitting diffused light emitting module vertically emits diffused light to the light-transmitting module, and the diffused light is emitted into the surface of sludge to be detected; the diffused light detection module receives diffuse reflection light entering the light transmitting module through diffuse reflection of the diffused light in the to-be-detected sludge, converts the diffuse reflection light into an electric signal and transmits the electric signal to the electric control system, and the electric control system calculates the sludge moisture content based on a photoelectric signal and a diffuse reflection principle, so that the sludge moisture content can be detected in various sludge scenes. The water content in the sludge can be accurately measured on line in real time.

Description

Technical Field

[0001] The present application relates to the technical field of sludge moisture content detection, and in particular to a sludge moisture content detection device. Background Art

[0002] In sewage treatment and resource utilization, sludge moisture content reflects the percentage of water contained in a unit mass of sludge, and is a key parameter for confirming the nature of sludge and selecting treatment processes. The traditional method for detecting sludge moisture content is to take a certain amount of sludge sample, calculate the dry weight and wet weight of the sludge sample to determine the sludge moisture content, but the detection process is cumbersome and does not meet the needs of real-time online monitoring.

[0003] At present, the market mainly uses online sludge detectors to detect the moisture content of sludge in real time, which is mainly based on two principles: one is based on the microwave detection principle, based on the fact that when microwaves pass through materials containing liquid substances, the energy will be absorbed, and the moisture content is measured in real time by measuring the attenuation of microwaves; the other is a measuring instrument based on the scattered light principle. When the light source encounters particulate matter in the water, scattered light is generated. The sludge concentration is measured by measuring the intensity of the scattered light and converted to detect the moisture content of the sludge in real time.

[0004] However, microwave sensors are expensive to manufacture, and because the dielectric constant of liquids varies greatly, the measurement results must be revised based on the water sample conditions on site, resulting in measurement errors. Another type of measuring instrument is based on the principle of scattered light. When the sludge particles are large and larger than the wavelength of the measuring light source, which does not conform to the principle of light scattering, obvious measurement errors will also occur. Summary of the invention

[0005] In view of this, the present application provides a sludge moisture content detection device, which measures the diffuse reflected light of the sludge through the diffuse reflection principle to achieve accurate measurement of the sludge moisture content, and is used to solve the technical problem of measurement error of the existing sludge moisture content online detector.

[0006] The present application provides a sludge moisture content detection device, which adopts the following technical solution: A sludge moisture content detection device, comprising: Pedestal; A light-transmitting module is arranged above the base; A diffuse light emitting module is arranged at one end inside the base and is vertically fixed below the light-transmitting module, and is used to vertically emit diffuse light to the light-transmitting module and emit the diffuse light into the surface of the sludge to be tested; A diffuse light detection module is arranged at the other end of the base away from the diffuse light emission module, and is fixed obliquely below the light transmission module to receive diffuse reflected light diffusely reflected by the diffuse light in the sludge to be tested and entering the light transmission module; The electronic control system is wired to the diffuse light emitting module and the diffuse light detection module, and is used to stimulate the diffuse light emitting module to emit diffuse light, receive the diffuse reflected light received by the diffuse light detection module and convert the diffuse reflected light into a photoelectric signal, and generate detection data based on the diffuse light and the photoelectric signal to obtain a detection result.

[0007] By adopting the above technical solution, diffuse light is emitted vertically to the sludge surface, which effectively avoids the measurement error caused by direct reflection of light and improves the accuracy of measurement; the diffuse light detection module is set at an angle, which can more comprehensively capture the reflected light generated by different moisture content inside the sludge, thereby enhancing the sensitivity and reliability of detection; the electronic control system intelligently controls the entire process, from exciting the light source to receiving the signal, and analyzes the optical signal based on the diffuse light principle to generate accurate detection results, thereby realizing automated online detection of sludge moisture content and improving work efficiency and detection accuracy.

[0008] Optionally, a first plug socket and a second plug socket are provided under the base, one end of the first plug socket is wired to the diffuse light emission module, and the other end is wired to the electric control system; one end of the second plug socket is wired to the diffuse light detection module, and the other end is wired to the electric control system.

[0009] By adopting the above technical solution, the first plug socket serves as a bridge between the diffuse light emitting module and the electronic control system, and the diffuse light emitting module can be controlled to emit diffuse light in real time online through the electronic control system. The second plug socket serves as a bridge between the diffuse light detection module and the electronic control system, and the reflected light detected by the diffuse light detection module can be obtained in real time online through the electronic control system, thereby ensuring efficient and accurate signal transmission and realizing real-time online detection of sludge moisture content.

[0010] Optionally, the diffuse light emission module includes a luminous light source, a driving circuit board, an integrating sphere, a light source detector, an emitting lens and a first aperture. The luminous light source is arranged on the driving circuit board, and the luminous light source is arranged on one side of the integrating sphere. The integrating sphere reflects the light of the luminous light source multiple times to form uniform light emission. A light source detector for detecting light is provided on one side of the integrating sphere. The light source detector converts the diffuse light emitted by the integrating sphere into a photoelectric signal. The emitting lens is arranged above the integrating sphere to image the uniform diffuse light onto the contact surface between the transparent surface and the sludge. The first aperture is arranged above the emitting lens to limit the diffuse light to the measurement area of ​​the transparent module.

[0011] By adopting the above technical solution, the driving circuit board can excite the diffuse light emitted by the luminous light source, and the integrating sphere is arranged at the entrance on one side of the emitting light source. The diffuse light can enter the integrating sphere from the light entrance of the integrating sphere, and the diffuse light is captured by the light source detector inside the integrating sphere, and the attenuation of the diffuse light is monitored and corrected. The light source detector monitors the lighting conditions in real time inside the integrating sphere, and feedback adjusts the luminous light source to ensure stable light intensity; the emitting lens further focuses the diffuse light and optimizes the diffuse light, so that it is more concentratedly emitted to the light-transmitting module, thereby improving the utilization rate of light energy; the precise guidance of the diffuse light emitted by the first aperture reduces the scattering and loss of light, limits the emission of uniform diffuse light to the measurement area that can be accurately measured, ensures the stability and uniformity of the light source, enhances the intensity and clarity of the detection signal, and improves the measurement accuracy of the sludge moisture content.

[0012] Optionally, the driving circuit board is connected to the first plug socket by wire.

[0013] By adopting the above technical solution, the electronic control system can accurately control the driving circuit board, and then adjust the brightness, switch and other parameters of the light source, realize fine control of the light source output, adjust different diffuse light intensities for detection in different sludge scenes, and improve the flexibility of sludge moisture content detection.

[0014] Optionally, the diffuse light detection module includes a shielding shell, a second aperture, a receiving lens and a photoelectric receiver, the second aperture is arranged above the shielding shell, the receiving lens and the photoelectric receiver are installed inside the shielding shell, and the receiving lens is arranged between the second aperture and the photoelectric receiver, the second aperture is used to limit the stray light of the emitted light, the receiving lens images the diffuse reflected light onto the photoelectric receiver, and the photoelectric receiver generates a photoelectric signal proportional to the diffuse reflected light signal and transmits it to the electronic control system.

[0015] By adopting the above technical solution, the shielding shell isolates the unfavorable factors such as stray light and electromagnetic interference in the external environment, ensuring the purity of the emitted light during the detection process; the second aperture accurately limits the angle and range of the incident light, allowing only the emitted light in a specific direction to enter the detection module, thereby effectively reducing the interference of non-target light sources and improving the accuracy of detection; the receiving lens efficiently focuses the reflected light onto the photoelectric receiver, enhancing the intensity of the optical signal, so that a clear signal can be obtained even in a weak light environment; the photoelectric receiver can convert the received optical signal into an electrical signal and transmit it to the electronic control system in real time for processing, ensuring the rapid response capability and data processing efficiency of the entire detection device. The anti-interference ability and photoelectric conversion efficiency of the detection device are improved, and high-precision and high-sensitivity detection of sludge moisture content is achieved.

[0016] Optionally, the photoelectric receiver is connected to the second plug socket by wire.

[0017] By adopting the above technical solution, the electronic control system can obtain the optical signal transmitted by the photoelectric receiver online in real time and measure the sludge moisture content in real time.

[0018] Optionally, the electronic control system includes a CPU and a light source driving module, a signal processing module, a display module and a communication module connected to the CPU. The light source driving module is wired to the first plug socket to control the driving circuit board to excite the light source to emit diffuse light; the first plug socket simultaneously transmits the photoelectric signal of the light source detector; the second plug socket transmits the photoelectric signal of the photoelectric receiver to the signal processing module; the signal processing module processes the photoelectric signal into a digital signal and outputs it to the CPU, the CPU performs signal analysis on the signal to generate the detection data, and the display module is used to display the detection data; the communication module is used to transmit the detection data through external communication.

[0019] By adopting the above technical solution, the CPU is used as the core to coordinate the work of each module, ensuring the stable excitation of the light source and the accurate processing of the light signal. The wired connection between the light source driving module and the first plug socket realizes the precise control of the light source and ensures the effective emission of diffuse light; the wired connection between the light source constant current modulation module and the second plug socket ensures that the light signal received by the photoelectric receiver can be stably modulated and transmitted to the signal processing module to improve the signal quality; the signal processing module converts the light signal into an analog signal, and the CPU conducts in-depth analysis of these signals to quickly and accurately generate the detection data of the sludge moisture content, and intuitively displays the detection results through the display module, so that users can immediately understand the sludge status. At the same time, the communication module supports external communication and can transmit the detection data to the remote monitoring center or link with other systems in real time. The accuracy and efficiency of sludge moisture content detection are improved.

[0020] Optionally, the signal processing module includes a signal filtering and amplifying module and an A / D conversion module, wherein the signal filtering and amplifying module amplifies the photoelectric signal into a target electrical signal and transmits the target electrical signal to the A / D conversion module; the A / D conversion module converts the target electrical signal into a digital signal and transmits the digital signal to the CPU.

[0021] By adopting the above technical solution, the noise and interference in the photoelectric signal are removed through the signal filtering and amplifying module, the clarity and reliability of the photoelectric signal are enhanced, and it is amplified to a level suitable for processing. The amplified photoelectric signal is converted into a digital signal recognizable by the CPU through the A / D conversion module, thereby improving the quality and recognizability of the signal, enhancing the anti-interference ability and stability of the system, and ensuring that the CPU can receive accurate and clear signals, thereby more accurately analyzing the sludge moisture content and improving the detection accuracy and reliability of the entire detection device.

[0022] Optionally, the signal output module includes a 4-20mA module and an RS485 module for communicating with an external client device.

[0023] By adopting the above technical solutions, the 4-20mA module and RS485 module integrated in the signal output module provide flexible and diverse options for communication between the sludge moisture content detection equipment and external client devices. The 4-20mA module adopts analog signal transmission, which has the characteristics of stable transmission and strong anti-interference ability, and is suitable for scenes with low requirements for transmission distance. The RS485 module supports digital signal transmission, which has the advantages of long transmission distance, high transmission rate, and support for multi-node communication, and can meet the communication needs in complex network environments. External client devices can choose the appropriate communication method according to actual needs to achieve remote communication with the sludge moisture content detection equipment, and can obtain the sludge moisture content detection results in real time in different areas.

[0024] Optionally, a fluororubber sealing ring is provided between the light-transmitting module and the base.

[0025] By adopting the above technical solution, the fluororubber sealing ring is arranged between the light-transmitting module and the base, which effectively improves the sealing performance of the device, prevents external moisture, sludge impurities, etc. from entering the interior of the device, ensures the stable operation of each component, and enhances the durability and maintenance convenience of the equipment.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. The measurement is carried out using the diffuse light principle. The measurement is combined with the diffuse light emission module and the diffuse light detection module to ensure the stability of the light source and the purity of the light signal, reduce the impact of external interference on the detection results, and improve the accuracy of the measurement.

[0027] 2. Through multiple functional modules in the electronic control system, precise control of the light source and real-time reception and processing of optical signals are achieved, the needs of different sludge measurement scenarios are met, the detection parameters are quickly adjusted, real-time online detection is achieved, and the corresponding detection results are displayed and can be queried online in real time by external clients.

[0028] 3. A fluororubber sealing ring is set between the light-transmitting module and the base, which effectively isolates the corrosive substances and impurities in the external environment and improves the environmental adaptability of the equipment. This sealing design not only extends the service life of the equipment, but also reduces the failure rate caused by environmental factors and reduces maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of a sludge moisture content detection device shown in an embodiment of the present application; Figure 2 This is a schematic diagram of the structure of the electric control system of the sludge moisture content detection device shown in the embodiment of the present application; Figure 3 This is a schematic diagram of the signal processing flow of the sludge moisture content detection device shown in an embodiment of the present application.

[0030] Description of Figure Numbers 1. Base; 2. Light-transmitting module; 3. Diffuse light emitting module; 4. Diffuse light detecting module; 5. Electric control system; 11. First plug female socket; 12. Second plug female socket; 21. Fluorine rubber sealing ring; 31. Light emitting source; 32. Driving circuit board; 33. Integrating sphere; 34. Light source detector; 35. Transmitting lens; 36. First aperture; 41. Shielding shell; 42. Second aperture; 43. Receiving lens; 44. Photoelectric receiver; 51. CPU; 52. Light source driving module; 53. Signal processing module; 54. Communication module; 55. Screen display module; 531. Signal filtering and amplifying module; 532. A / D conversion module; 541. 4-20mA module; 542. RS485 module. DETAILED DESCRIPTION

[0031] The terms used in the following embodiments of the present application are only for the purpose of describing specific embodiments, and are not intended to be used as limitations to the present application. As used in the specification of the present application, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear indication to the contrary in the context. It should also be understood that the term "and / or" used in the present application refers to any or all possible combinations comprising one or more of the listed items.

[0032] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as suggesting or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features, and in the description of the embodiments of the present application, unless otherwise specified, "plurality" means two or more.

[0033] The present application is further described below with reference to the accompanying drawings: Example 1 This embodiment discloses a sludge moisture content detection device, see Figure 1 As shown, it includes a base 1, a light-transmitting module 2 arranged above the base 1, a diffuse light emitting module 3 at one end inside the base 1, a diffuse light detection module 4 at the other end inside the base 1, and an electric control system 5.

[0034] The light-transmitting module 2 is a flat plate made of quartz glass with high light transmittance and an elliptical structure. A fluororubber sealing ring 21 is provided at the bottom to prevent sludge from entering. It is installed at the opening above the base 1 to ensure efficient transmission of diffuse light and reflected light.

[0035] The diffuse light emission module 3 includes a light source 31, a driving circuit board 32, an integrating sphere 33, a light source detector 34, an emission lens 35 and a first aperture 36. The light source 31 is composed of a plurality of 800nm ​​LED light sources with the same wavelength evenly mounted on the driving circuit board 32, providing an initial light source for the entire system. An integrating sphere 33 is arranged on one side of the light source 31, and the light source 31 is directly opposite to the light inlet of the integrating sphere 33. When the light source 31 emits light, the integrating sphere 33 can fully obtain diffuse light. A precise light source detector 34 is installed inside the integrating sphere 33 to capture diffuse light and monitor and correct the attenuation of diffuse light. The light source detector 34 monitors the lighting conditions in real time inside the integrating sphere 33, and adjusts the light source 31 through feedback to ensure stable light intensity and convert the diffuse light into uniform diffuse light for emission. An emitting lens 35 is installed at the light outlet at the upper end of the integrating sphere 33 to further focus and optimize the diffuse light so that it is more concentrated and evenly emitted to the light-transmitting module 2, thereby improving the utilization rate of light energy. A first aperture 36 is also installed on the emitting lens 35 to control the light path and range, thereby ensuring that the focused diffuse light can be concentratedly and accurately projected to the predetermined light-transmitting module 2 and irradiated on the surface of the sludge to be measured in the measuring area.

[0036] The diffuse light detection module 4 includes a shielding shell 41, a second aperture 42, a receiving lens 43 and a photoelectric receiver 44. The receiving lens 43 and the photoelectric receiver 44 are installed inside the shielding shell 41, and the receiving lens 43 is arranged between the second aperture 42 and the photoelectric receiver 44. The second aperture 42 is used to receive the emitted light, and the receiving lens 43 transmits the reflected light to the photoelectric receiver 44. The photoelectric receiver 44 generates a reflected light signal and transmits it to the electronic control system 5. The shielding shell 41 isolates the unfavorable factors such as stray light and electromagnetic interference in the external environment, ensuring the purity of the emitted light during the detection process. The second aperture 42 is arranged above the shielding shell 41, which accurately limits the angle and range of the incident light, and only allows the emitted light in a specific direction to enter the detection module, thereby effectively reducing the interference of non-target light sources and improving the accuracy of detection; the receiving lens 43 efficiently focuses the reflected light onto the photoelectric receiver 44, enhances the intensity of the optical signal, so that a clear signal can be obtained even in a weak light environment, thereby improving the measurement intensity; the photoelectric receiver 44 can convert the received optical signal into an electrical signal, and transmit it to the electronic control system 5 for processing in real time, ensuring the rapid response capability and data processing efficiency of the entire detection device.

[0037] The electric control system 5 is installed in a wall-mounted control box to facilitate personnel operation. The uniform light emission module and the diffuse light detection module 4 are connected to the electric control system 5 module through cables. On the base 1, a first plug socket 11 and a second plug socket 12 are provided. The driving circuit board 32 is wired to the first plug socket 11, and can be further connected to the light source detector to realize feedback on the light intensity of the diffuse light; the photoelectric receiver 44 is wired to the second plug socket 12. The electric control system 5 can accurately control the driving circuit board 32 based on the first plug socket 11, and then adjust the brightness, switch and other parameters of the light source 31, realize fine control of the light source output, adjust different diffuse light intensities for detection in different sludge scenes, and the electric control system 5 can obtain the optical signal transmitted by the photoelectric receiver 44 in real time online through the second plug socket 12, measure the sludge moisture content in real time, and obtain sewage detection data.

[0038] The implementation principle of Example 1 is as follows: the electric control system 5 excites the diffuse light emission module 3 to emit diffuse light, and the diffuse light is emitted to the surface of the sludge to be tested through the light-transmitting module 2. Part of the diffuse light is reflected back in the sludge and enters the diffuse light detection module 4 through the light-transmitting module 2, wherein the reflected light is proportional to the concentration of the sludge within a certain range, and the measurement of the sludge moisture content is achieved by measuring the intensity of the diffuse reflected light. The diffuse light detection module 4 converts the reflected light into a photoelectric signal and transmits it to the electric control system 5 for data processing and analysis. Based on the linear relationship between the intensity of the diffuse reflected light and the moisture content of the sludge, the electric control system 5 can accurately calculate the moisture content of the sludge, and display the test results on the display screen, and can also transmit the data to other devices or systems through the communication interface.

[0039] Example 2 Based on Example 1, this example provides a schematic diagram of the structure of the electric control system 5 of the sludge moisture content detection device, see Figure 2 and Figure 3 As shown, the electric control system 5 includes a CPU 51 and a light source driving module 52 , a signal processing module 53 , a display module and a communication module 54 connected to the CPU 51 .

[0040] Among them, the light source driving module 52 is wiredly connected to the first plug socket 11, and controls the driving circuit board 32 to excite the light source 31 to emit diffuse light; the second plug socket 12 is wiredly connected to the signal processing module 53, receives the emission light signal transmitted by the photoelectric receiver 44, and outputs a stable emission light signal to the signal processing module 53 after constant current modulation; the signal processing module 53 includes a signal filtering and amplifying module 531 and an A / D conversion module 532, the signal filtering and amplifying module 531 obtains the photoelectric signal and amplifies the photoelectric signal into a target electrical signal, and transmits the target electrical signal to the A / D conversion module 532; the A / D conversion module 532 converts the target electrical signal into an analog signal, and transmits the analog signal to the CPU51. After analyzing the analog signal, the CPU51 can obtain the detection data of the sludge moisture content, and based on the linear relationship between the light signal received by the detector and the sludge moisture content, a linear curve can be drawn. For water samples with unknown sludge moisture content, the measured sludge moisture content can be obtained based on the linear curve between the optical signal received by the detector and the sludge moisture content, and sent to the display module for display, which can be displayed on the touch screen; and the test results are sent to the external client through the 4-20mA module 541 and RS485 module 542 in the communication module 54.

[0041] The present invention is based on the principle of diffuse reflection detection. In the light emitting module, a beam of uniform light emitted after mixing by the integrating sphere 33 is vertically irradiated on the sludge to be tested through the light transmission module 2. The reflected light of the sludge to be tested is measured in a direction of 45 degrees to the incident light. The reflected light is proportional to the concentration of the sludge within a certain range. The moisture content of the sludge is measured by measuring the intensity of the diffuse reflected light.

[0042] The detection device can be installed on the pipe wall where the liquid sludge flows, and contacts the sludge sample to be tested through the light-transmitting module 2. The diffuse light emitted by the light source 31 forms a uniform light outlet after multiple diffuse reflections inside the integrating sphere 33. The light outlet is a uniform surface light source. This uniform surface light source is imaged by the emitting lens 35 on the surface of the light-transmitting module 2 in contact with the sludge to be tested to form a uniform light spot illumination. The diffusely reflected light of the sludge passes through the light-transmitting module 2 and is converged by the receiving lens 43 to the light source detector 34 module. The detector converts the optical signal into an electrical signal, transmits the electrical signal to the electronic control system 5 through a cable, and is processed by the internal circuit. The measurement result is displayed on the display screen and uploaded through data transmission, realizing real-time online and accurate measurement of the water content in the sludge in a variety of sludge scenarios.

[0043] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative, for example, the division of the modules is only a logical function division, and there may be other division methods in actual implementation.

[0044] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical units, and may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Any equivalent replacement or improvement based on the technical principle of the present application shall be included in the protection scope of the present application. For example, the light source can be replaced by an LED light source of a different type or wavelength; the CPU in the electric control system can be replaced by other types of microcontrollers or processors, etc. These replacements and improvements shall be within the protection scope of the present application.

Claims

1. A sludge moisture content detection device, characterized in that: include: Base (1); A light-transmitting module (2) is arranged above the base (1); A diffuse light emitting module (3) is arranged at one end inside the base (1) and is vertically fixed below the light-transmitting module (2) and is used to vertically emit diffuse light toward the light-transmitting module (2) and emit the diffuse light into the surface of the sludge to be tested; A diffuse light detection module (4) is arranged at the other end of the base (1) away from the diffuse light emission module (3), and is fixed obliquely below the light-transmitting module (2) to receive diffuse reflected light diffusely reflected in the sludge to be tested and entering the light-transmitting module (2); The electric control system (5) is wiredly connected to the diffuse light emitting module (3) and the diffuse light detection module (4), and is used to stimulate the diffuse light emitting module (3) to emit diffuse light, receive the diffuse reflected light received by the diffuse light detection module (4), and convert the diffuse reflected light into a photoelectric signal, and generate detection data based on the diffuse light and the photoelectric signal to obtain a detection result.

2. The sludge moisture content detection device according to claim 1, characterized in that: A first female plug socket (11) and a second female plug socket (12) are provided below the base (1); one end of the first female plug socket (11) is connected to the diffuse light emission module (3) by wire, and the other end is connected to the electric control system (5) by wire; one end of the second female plug socket (12) is connected to the diffuse light detection module (4) by wire, and the other end is connected to the electric control system (5) by wire.

3. The sludge moisture content detection device according to claim 2, characterized in that: The diffuse light emission module (3) comprises a light source (31), a driving circuit board (32), an integrating sphere (33), a light source detector (34), an emission lens (35) and a first aperture (36); the light source (31) is arranged on the driving circuit board (32); the light source (31) is arranged on one side of the integrating sphere (33); the integrating sphere (33) reflects the light of the light source multiple times to form uniform diffuse light emission; a light source detector (34) for detecting light is arranged on one side of the integrating sphere (33); the light source detector converts the diffuse light emitted by the integrating sphere (33) into a photoelectric signal; the emission lens (35) is arranged above the integrating sphere (33) and is used to image the uniform diffuse light onto the contact surface between the light transmission module (2) and the sludge; and the first aperture (36) is arranged above the emission lens (35) and is used to limit the diffuse light to the measurement area of ​​the light transmission module (2).

4. The sludge moisture content detection device according to claim 3, characterized in that: The driving circuit board (32) is connected to the first female plug socket (11) by wire.

5. The sludge moisture content detection device according to claim 4, characterized in that: The diffuse light detection module (4) comprises a shielding shell (41), a second aperture (42), a receiving lens (43) and a photoelectric receiver (44), wherein the second aperture (42) is arranged above the shielding shell (41), the receiving lens (43) and the photoelectric receiver (44) are installed inside the shielding shell (41), and the receiving lens (43) is arranged between the second aperture (42) and the photoelectric receiver (44), the second aperture (42) is used to limit the stray light of the emitted light, the receiving lens (43) images the diffuse reflected light of the sludge to the photoelectric receiver (44), and the photoelectric receiver (44) generates a photoelectric signal proportional to the diffuse reflected light and transmits it to the electronic control system (5).

6. The sludge moisture content detection device according to claim 5, characterized in that: The photoelectric receiver (44) is connected to the second female plug socket (12) by wire.

7. The sludge moisture content detection device according to claim 6, characterized in that: The electric control system (5) comprises a CPU (51) and a light source driving module (52), a signal processing module (53), a display module and a communication module (54) connected to the CPU (51). The light source driving module (52) is wiredly connected to the first female plug socket (11) to control the driving circuit board (32) to excite the light source (31) to emit diffuse light. The first female plug socket (11) simultaneously transmits the photoelectric signal of the light source detector (34); the second female plug socket transmits the photoelectric signal converted by the diffuse reflected light received by the photoelectric receiver (44) to the signal processing module (53); the signal processing module (53) processes the photoelectric signal into a digital signal and outputs it to the CPU (51); the CPU (51) performs signal analysis on the signal to generate the sludge moisture content detection data; the display module is used to display the detection data; and the communication module (54) is used to transmit the detection data via external communication.

8. The sludge moisture content detection device according to claim 7, characterized in that: The signal processing module (53) comprises a signal filtering and amplifying module (531) and an A / D conversion module (532); the signal filtering and amplifying module (531) amplifies the photoelectric signal into a target electrical signal, and transmits the target electrical signal to the A / D conversion module (532); the A / D conversion module (532) converts the target electrical signal into a digital signal, and transmits the digital signal to the CPU (51).

9. The sludge moisture content detection device according to claim 8, characterized in that: The signal output module comprises a 4-20mA module (541) and an RS485 module (542), which are used for communicating with external client devices.

10. The sludge moisture content detection device according to claim 1, characterized in that: A fluororubber sealing ring (21) is provided between the light-transmitting module (2) and the base (1).

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