US 11,719,623 B2
Slurry material uniformity detection device and detection method
Zhidan Liu, Beijing (CN); Rui Yang, Beijing (CN); Yufei Zeng, Beijing (CN); and Gangfeng Feng, Beijing (CN)
Assigned to CHINA AGRICULTURAL UNIVERSITY, Beijing (CN)
Appl. No. 17/630,331
Filed by China Agricultural University, Beijing (CN)
PCT Filed Jul. 2, 2020, PCT No. PCT/CN2020/099887
§ 371(c)(1), (2) Date Jan. 26, 2022,
PCT Pub. No. WO2021/017745, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 201910681037.8 (CN), filed on Jul. 26, 2019.
Prior Publication US 2022/0252504 A1, Aug. 11, 2022
Int. Cl. G01N 21/03 (2006.01); G01N 21/59 (2006.01); G06T 11/20 (2006.01); G01N 21/84 (2006.01)
CPC G01N 21/0303 (2013.01) [G01N 21/59 (2013.01); G06T 11/206 (2013.01); G01N 2021/8405 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A biomass slurry material uniformity detection device, wherein the device comprises a detection unit and an operation control and signal processing unit;
the material sample is placed in the sample pool, the material sample is liquid;
the detection unit comprises a sample detection box shaped like a box; and the sample detection box comprises a sample detection box inner shell;
the sample detection box inner shell is divided into a light chamber and a dark chamber by a division plate a sample chamber is arranged between the light chamber and the dark chamber, and the sample chamber is connected with the sample detection box inner shell by the division plate;
the light chamber is provided with a near-infrared light source and a light source fixed bracket; wherein the near-infrared light source is fixed to the sample detection box inner shell of the light chamber by the light source fixed bracket;
the sample detection box inner shell of the dark chamber is provided with an optical sensor;
at least two light-transmitting openings are arranged symmetrically on two wall surfaces of the sample chamber parallel to the division plate, the light-transmitting opening on the side adjacent to the light chamber is a first light-transmitting opening, the light-transmitting opening on the side adjacent to the dark chamber is a second light-transmitting opening, and the connecting line between the first light-transmitting opening and the second light-transmitting opening is perpendicular to the division plate;
the near-infrared light source and the optical sensor are arranged on opposite sides of the sample chamber, the near-infrared light source, the first light-transmitting opening, the second light-transmitting opening and the optical sensor are arranged along a common axis, to form a detection light path, such that the light signal emitted by the near-infrared light source can be received by the optical sensor after passing through the first light-transmitting opening and the second light-transmitting opening of the sample chamber;
a rotating lifting device is fixed to the bottom of the sample detection box, and the sample chamber is fixed above the rotating lifting device;
the rotating lifting device comprises a rotating lifting device shell, a guide rail, a sliding block, a low-speed motor, an upper coupler, a lower coupler, a screw rod and a fixed nut, wherein
a wall surface of the rotating lifting device shell is provided with at least one guide rail along a vertical direction, the guide rail is provided with a sliding block, and the sliding block is provided with a low-speed motor;
a top end of the screw rod is arranged inside the sample chamber, and is connected with a sample pool support bracket by an upper coupler; the sample pool support bracket is fixedly connected with a sample pool which is above the sample pool support bracket; the screw rod passes downwards through the upper end of the rotating lifting device shell, and a fixed nut is sleeved on the screw rod, and the fixed nut is fixed on the upper end of the rotating lifting device shell, the bottom end of the screw rod is connected with the power output shaft of the low-speed motor by a lower coupler; when the screw rod is at its uppermost position, the bottom of the sample pool is at least not lower than a detection light path formed by the near-infrared light source, the first light-transmitting opening, the second light-transmitting opening and the optical sensor, such that under the driving of the low-speed motor, the sample pool can rotate downwards through the detection light path formed by the near-infrared light source, the first light-transmitting opening, the second light-transmitting opening and the optical sensor;
the operation control and signal processing unit comprises a data collection and transmission module and a data processing module; and
the data collection and transmission module is respectively electrically connected with the optical sensor and the data processing module, and data received and acquired by the optical sensor is transmitted to the data processing module by the data collection and transmission module.