Abstract: A treatment system and method for zero-discharge of photovoltaic wastewater are provided. The treatment system includes a dilute acid wastewater treatment device, a dilute alkaline wastewater treatment device and a neutralized concentrated water filtration device. The dilute acid wastewater treatment device includes a dilute acid wastewater filtration unit, an acid circuit concentrated water conditioning unit, a calcium fluoride crystallization unit and a calcium bicarbonate crystallization unit connected in sequence. The dilute acid wastewater treatment device further includes an adjustment pipeline, which is connected upstream of the calcium fluoride crystallization unit, between the calcium fluoride crystallization unit and the calcium bicarbonate crystallization unit, and downstream of the calcium bicarbonate crystallization unit. The dilute alkaline wastewater treatment device includes a dilute alkaline wastewater filtration unit and a silicic acid crystallization unit connected in sequence.

Abstract: A sewage treatment device, including a cylindrical housing and an agitator arranged at a central axis of the cylindrical housing. An interior of the cylindrical housing is divided into a first crystallization zone, a second crystallization zone including at least two sub-zones, a third crystallization zone and a clarification zone from bottom to top. Adjacent zones or sub-zones are separated by the first inclined plates and second inclined plates that are alternately arranged. A method for treating a reverse osmosis concentrate is also provided. The agitator is activated. The reverse osmosis concentrate is fed into the sewage treatment device. An antiscalant-removing agent and a crystal seed are added into the first crystallization zone. A flocculant is added into the third crystallization zone. The reverse osmosis concentrate sequentially flows through the crystallization zones and the clarification zone to obtain purified water.

Abstract: A transmitter includes: an input pair circuit, outputting multiple output signals through multiple signal pads according to multiple input signals, respectively; a first matching circuit, powered by a first power supply voltage, and turned on according to some control signals to operate as a load for the input pair circuit is a first mode; a second matching circuit, powered by a second power supply voltage, and turned on according to some other control signals to operate as a load for the input pair circuit is a second mode; and a voltage generating circuit, generating the multiple control signals and multiple bias voltages according to a level of one of the multiple signal pads, the first and second power supply voltages and multiple selection signals. The first and second matching circuits further perform overvoltage and leakage protection according to the bias voltages.

Abstract: The ECS circuit includes an ECS control module, a command generation module, an address counting module, and an error tracking and recording module. The ECS control module is configured to: receive a mode control signal, and generate an ECS command signal based on the mode control signal. The command generation module is configured to generate an internal command signal based on the ECS command signal. The internal command signal is configured to perform a corresponding ECS operation. The address counting module is configured to: perform address counting based on the internal command signal, and generate a counting end signal when counting is completed for a target address. The error tracking and recording module is configured to: receive an error signal, and generate an error tracking signal based on the counting end signal and the error signal. The error tracking signal is configured to record error information of the ECS operation.

Abstract: A tracking method and apparatus, an electronic device, and a storage medium. The tracking method comprises: in a solar tracking phase, determining a current weather type according to current weather data and/or current power generation of components on at least two photovoltaic tracking brackets (S110); and determining first target tracking angles of the components according to the current weather type, so that a tracking controller corresponding to the components adjusts the corresponding photovoltaic tracking brackets according to the first target tracking angles, so as to adjust the components on the photovoltaic tracking brackets (S120).

Abstract: A joint diagnosis method, including steps: collecting data of a current motion trajectory of a robot, solving for a frictional force of a joint, performing temperature compensation on a friction model based on a feedback temperature of the joint, and solving for an output torque of a connecting rod of the joint, to acquire a dynamics model error; performing detection and analysis on the dynamics model error, to acquire modal analysis and joint wear degree results; and determining, based on the modal analysis and joint wear degree results, whether the joint is in an abnormal wear state, and if the joint is in the abnormal wear state, triggering a joint abnormity alarm, otherwise, performing calibration on the friction model.

Abstract: A power detector device includes a voltage generator circuit, a reference circuit, a level hold circuit and a comparator circuit. The voltage generator circuit generates a bias voltage and a detection voltage according to a power supply voltage. The reference circuit generates a first reference voltage according to the power supply voltage. The level hold circuit selectively transmits the first reference voltage to a node according to the bias voltage, outputs a second reference voltage via the node, and holds a level of the second reference voltage after stopping transmitting the first reference voltage to the node. The comparator circuit compares the second reference voltage with the detection voltage to generate a power detection signal.

Abstract: The disclosure provides an optical anti-counterfeiting element and an optical anti-counterfeiting product. The optical anti-counterfeiting element includes: a substrate; and a micro-structure layer, a plane where the micro-structure layer is located has at least one principal line, the micro-structure layer comprises a plurality of reflective structures along an extension direction of the at least one principal line; a side of each of the plurality of reflective structures away from the substrate is provided with a reflective surface, and a plane angle of a dihedral angle formed by the reflective surface and a surface of the substrate is an inclination angle; wherein inclination angles of all of the plurality of reflective structures in the extension direction of the at least one principal line at least include a variation period. The disclosure solves the problem in the related art that a dynamic feature of an optical anti-counterfeiting element is not easily recognized.

Abstract: A device for removing silicate from reverse osmosis concentrate by induced crystallization, including an induced crystallization reactor, an acid distributor, a raw water distributor, a first silicate detector, a second silicate detector and a pH meter. An inner cavity of the induced crystallization reactor is divided into a crystallization reaction zone and a transition zone from bottom to top. The raw water distributor is provided at a bottom of the crystallization reaction zone. The acid distributor is located above the raw water distributor. The induced crystallization reactor is provided with a liquid inlet pipe. The liquid inlet pipe communicates with the raw water distributor. The first silicate detector and the pH meter are provided on the liquid inlet pipe. A top of the induced crystallization reactor is provided with a liquid outlet pipe. The second silicate detector is provided on the liquid outlet pipe.

Abstract: An air conditioner, comprising an outdoor unit and an indoor unit. The indoor unit comprises a casing, a heat exchange assembly, a fan and an electric control assembly. The casing comprises an air inlet and an air outlet. The heat exchange assembly comprises a heat exchanger and a condensate pan, the heat exchanger being configured to exchange heat with an airflow passing through same to form a heat-exchanged airflow, and the heat exchanger being provided at the top of the condensate pan. The fan is configured to introduce the airflow through the air inlet and send out same from the air outlet after the airflow passes through the heat exchanger. The electric control assembly comprises an electric control box and a circuit board, the circuit board being arranged in the electric control box.

Abstract: Disclosed are a micro-electromechanical system (MEMS) structure and an MEMS microphone comprising same. The MEMS structure comprises a back plate; and a diaphragm located on one side of the back plate, wherein the diaphragm and the back plate forms a variable capacitor, the diaphragm comprises multiple first through holes and air release structures respectively corresponding to the first through holes, and the diaphragm further comprises one or more second through holes penetrating through the diaphragm.

Abstract: Provided are an anti-counterfeit coding element and a method for manufacturing the anti-counterfeit coding element.

Abstract: A machine learning model evaluation method, a data processing method, and a related device are disclosed. The method can be applied to the autonomous driving field of artificial intelligence. The method includes: processing a plurality of pieces of segmented data in an evaluation sample using a machine learning model, to generate a plurality of prediction labels, and determining a parameter value of at least one evaluation indicator. The evaluation sample includes description data of a traffic scene within a first duration, the segmented data includes description data of the traffic scene within a first sub-duration of the first duration. The at least one evaluation indicator indicates stability and/or accuracy corresponding to the plurality of prediction labels, and the accuracy is obtained based on ground-truths corresponding to the plurality of pieces of segmented data.

Abstract: A method for determining a weather condition, comprising: measuring horizontal irradiance; measuring first slope irradiance and second slope irradiance, a first slope and a second slope being arranged to face the sun and being symmetrical about the meridian plane; determining an azimuth irradiation deviation rate according to the horizontal irradiance, the first slope irradiance, and the second slope irradiance; and determining a weather condition according to the horizontal irradiance, the first slope irradiance, the second slope irradiance, and the azimuth irradiation deviation rate. Also provided is a device for determining a weather condition.

Abstract: The disclosure provides an optical anti-counterfeiting element, an optical anti-counterfeiting product and a manufacturing method. The optical anti-counterfeiting element includes: a substrate; a micro-structure forming layer, wherein the micro-structure forming layer is arranged on a side surface of the substrate, the micro-structure forming layer has micro-structures, and a longitudinal section of each of the micro-structures has a preset shape; and a coating layer, wherein the coating layer is arranged on the micro-structure forming layer, the micro-structures are coated with the coating layer to form a coated micro-structure, and a height of each of the coated micro-structures continuously changes; wherein when shapes of the micro-structures have an abrupt-change, the coating layer has a demetallized region, and when a height of each of the micro-structures changes continuously, the coating layer has no demetallized region.

Abstract: A joint diagnosis method, including steps: collecting data of a current motion trajectory of a robot, solving for a frictional force of a joint, performing temperature compensation on a friction model based on a feedback temperature of the joint, and solving for an output torque of a connecting rod of the joint, to acquire a dynamics model error; performing detection and analysis on the dynamics model error, to acquire modal analysis and joint wear degree results; and determining, based on the modal analysis and joint wear degree results, whether the joint is in an abnormal wear state, and if the joint is in the abnormal wear state, triggering a joint abnormity alarm, otherwise, performing calibration on the friction model.

Abstract: A counting circuit, a semiconductor memory, and a counting method are provided. The counting circuit includes a first decoding module and a first counting module, and the first decoding module is connected with the first counting module. The first decoding module is configured to receive a first mode signal, and decode the first mode signal to generate a decoded signal; and the first counting module includes at least one counting sub-module, and is configured to: determine, according to the decoded signal, a selected target counting module from the at least one counting sub-module, receive the counting signal, count the counting signal through the target counting module, and output a first counting pulse signal every time when a counting value corresponding to the counting signals reaches an integer multiple of a counting threshold.

Abstract: Provided are a control circuit, a control method, and a semiconductor memory. The control circuit includes a timing control module and a command control module. An output terminal of the timing control module is connected to an input terminal of the command control module. The timing control module is configured to receive a first clock signal, perform counting based on the first clock signal, generate an error check and scrub (ECS) flag signal, and send the ECS flag signal to the command control module. The ECS flag signal is in a valid state when a counting value meets a preset condition. The command control module is configured to receive the ECS flag signal, obtain a refresh command signal when the ECS flag signal is in the valid state, and generate an ECS command signal based on the refresh command signal.

Abstract: The disclosure provides an optical anti-counterfeiting element and an optical anti-counterfeiting product. The optical anti-counterfeiting element comprises a substrate and a plurality of reflective mirror segments; wherein each of the plurality of reflective mirror segments is arranged on one side surface of the substrate according to a preset rule, the plurality of reflective mirror segments are arranged at intervals and two adjacent reflective mirror segments form a gap, and the plurality of reflective mirror segments and/or the gap provide pixels of macroscopic images, thereby forming macroscopic dynamic images and stereoscopic images. The disclosure solves the problem in the related art that an optical anti-counterfeiting element has a low yield.