35results about How to "Fast and accurate judgment" patented technology

An air conditioner and a control method thereof are disclosed. The air conditioner includes a distance detection unit which detects a distance to an obstacle in an indoor space, a temperature detection unit which detects a space temperature of the indoor space, a rotation unit which rotates the distance detection unit and the temperature detection unit, and a controller which controls to detect distance information and temperature information according to space regions obtained by dividing the indoor space into a plurality of regions in a rotation direction while the distance detection unit and the temperature detection unit are rotated, to sequentially store the distance information and temperature information according to the space regions,; and to determine whether there is a human body in a corresponding space region and a position of the human body based on a variation in the stored distance information and temperature information. Accordingly, it is possible to quickly and accurately distinguish an object from a human body, and also possible to quickly and accurately determine even a hardly moving body, thereby improving pleasantness of a human body by concentrating or removing cool air or warm air to or from the human body according to a user's preference.

The invention relates to a method for detecting a steady state and judging an operation condition of a water treatment process in a thermal power plant. The method comprises the steps of (1), collecting sensor data comprising pressure of a water outlet header pipe of a water pump, water inlet flow of a cation bed, water inlet flow of an anion bed, pressure of a cationic exchanger inlet, pressure of an anion exchanger inlet, pressure of a mixed ion exchanger inlet, ion concentration and the like to determine steady state thresholds of the sensors and operation condition switch thresholds; (2), detecting operation condition steady state and judging operation condition stages: 2.(1), calculating and judging whether the process is in a steady state or not according to the steady state thresholds of the sensors of the step (1), performing the step 2.(2) if the process is in unsteady state in judgment; 2.(2), calculating and judging that whether the operation condition switches according to the operation condition switch thresholds of the step (2), performing the step 2.(3) if the operation condition switches in judgment; and 2.(3), calculating Euclidean distance and similarity according to data which is sampled in real time to judge the operation condition stage. The method is capable of accurately judging the steady state and the operation condition switch of the water treatment process, transiting the unsteady state process and monitoring the data of the sensors in real time automatically and dynamically.

The invention discloses an energy storage inverter grid-connected and off-grid and off-grid and grid-connected seamless switching control method. Instantaneous active power and reactive power are calculated through an inverter output voltage module value and components of the inverter output voltage module value and current in a D axis and a Q axis under a synchronous rotating coordinate system; simulating droop characteristics of the power grid, and setting reactive power and voltage amplitude droop reactive power loop output voltage and active power and frequency droop active power loop frequency; and the obtained synthesized reference voltage passes through a voltage and current double-loop controller and then is subjected to SVPWM (Space Vector Pulse Width Modulation) wave sending, sothat the output voltage of the inverter has the same droop characteristic as the power grid voltage. According to the control method, bidirectional seamless switching between grid connection and disconnection and grid connection and disconnection and connection can be achieved, the loop structure of the controller is kept unchanged before and after switching, the output voltage can be kept continuous at the moment of switching and can be stabilized to continue to operate under the off-grid condition, and seamless switching is achieved. Meanwhile, the power grid fault can be quickly and accurately judged.

Disclosed is a medium recognition apparatus for determining the type of a medium by using color information obtained by scanning the inserted medium, as well as a method for determining the type of a medium by using the apparatus. Color information and size information obtained by scanning only a partial region of a medium image, the hue of the medium image scanned by the image sensor, or RGB channel color information scanned by the color sensor is compared with pre-stored reference information to determine the type of the medium. This guarantees that the type of the medium is determined quickly and accurately based on simple comparing results.

The invention comprises: carrier, sampling pad, reaction block, peridium film and absorbent paper. Said sampling pad, reaction block, peridium film and absorbent paper are sequentially pasted on the carrier; said reaction block containing the antigen and antibody to the 6-acetyl morphin which is a specificity metabolite of heroin; the antigen to the 6-acetyl morphin has B,C two structures; the B is 6 bits and is connected to the bovine serum albumin; the C is connected to the bovine serum albumin through N base group.

The invention relates to a method for judging the surface segregation state of an alloy and a method for manufacturing an alloy material. According to the method for judging the surface segregation state of the alloy and the method for manufacturing the alloy material, aiming at a specific material system, the surface segregation state of the alloy is judged, the element composition of the alloy is selected for manufacturing, aiming at the alloy required to realize material surface segregation modification, the proper element addition types can be screened and calculated for manufacturing, andaiming at an alloy system required to inhibit surface segregation, an element type combination capable of inhibiting surface segregation can be screened for manufacturing. The method for judging thesurface segregation state of the alloy and the method for manufacturing the alloy material have the advantages that the surface segregation state of the alloy can be conveniently and accurately judged, and the specific system alloy capable of regulating and controlling the material surface segregation state can be manufactured.

The invention discloses a leakage testing device suitable for a high-pressure common rail transverse cavity oil inlet type oil injector of a piston type diesel engine. The device comprises a heating box used for heating a cylinder cover oil injector assembly, a common rail pipe, a high-pressure oil pump connected with the common rail pipe, an oil delivery pump connected with the high-pressure oilpump and an oil consumption measuring instrument connected with the oil delivery pump and an oil tank, wherein the cylinder cover oil injector component comprises an engine cylinder cover and a transverse cavity oil inlet type oil injector arranged on the engine cylinder cover, the common rail pipe is connected with the transverse cavity oil inlet type oil injector through a high-pressure oil pipe, a fuel oil metering unit is arranged on the high-pressure oil pump, and a rail pressure sensor is arranged on the common rail pipe. The leakage testing device suitable for the high-pressure common-rail transverse cavity oil inlet type oil injector of the piston type diesel engine can quickly and accurately judge a leakage point of the transverse cavity oil inlet type oil injector with low cost.

The invention discloses a chemical reagent for detecting formaldehyde in food and a preparation method thereof. The chemical reagent is prepared from, by weight, 0.4-0.9 part of ammonium acetate, 16-22 parts of ethyl alcohol, 0.8-2 parts of disodium hydrogen phosphate dodecahydrate, 0.1-0.4 part of luminol, 4-6 parts of sulphur, 3-6 parts of chalcanthite, 2-5 parts of sodium hypochlorite, 2.4-4.5parts of oxalic acid, 4-8 parts of acetylacetone, 5-6 parts of petroleum ether and 1.5-3 parts of potassium chloride. The raw materials are wide in source, the preparation technology is simple, use isconvenient, whether food contains formaldehyde or not can be judged rapidly and accurately, the accurate rate is high, and the using stability is good.

The invention relates to a system for generating the employee health degree through use traces. The system comprises an input module, a storage module, a central control module, a monitoring module and a statistics module. According to the system in the invention, physique information of a user is input in advance; the system calculates the preset exercise amount suitable for various different users through a specified formula on the basis of each piece of physique information; the problem that the detection result deviation value of a single evaluation standard is large due to the differencebetween different individuals can be effectively avoided; the detection efficiency of the system is improved; meanwhile, the system is remotely connected with a monitor; a user can carry or wear the monitor to enable the system to monitor the exercise amount of the user in real time; the timeliness of the detection system can be improved by replacing periodic single detection with real-time monitoring; it can be guaranteed that the user persists in exercising; and the detection efficiency of the system is further improved.

The invention discloses a right-angle plate detecting device comprising a bracket, a rocker and two elastic members, wherein the bracket includes a base and a vertical stand, the base is provided with a reference surface and a receiving cavity, the vertical stand is vertically fixed to the reference surface, the top of the rocker is in rotatable connection with the top of the vertical stand, the bottom of the rocker extends downwardly into the receiving cavity, one end of each elastic member is fixedly connected with the corresponding inner sidewall of the receiving cavity, the other end of each elastic member is fixedly connected with the bottom of the rocker, and the elastic members draw the rocker to form a 90-degree angle with the reference surface. When the right-angle plate detecting device is used, the horizontal plate of a right-angle plate adheres to the reference surface and the vertical plate of the right-angle plate adheres to the rocker. If the rocker does not swing when the vertical plate adheres to the rocker, the horizontal plate and the vertical plate have a 90-degree intersection angle and the right-angle plate is qualified. On the contrary, if the rocker swings, the horizontal plate and the vertical plate do not have a 90-degree intersection angle and the right-angle plate is unqualified. The right-angle plate detecting device can quickly and accurately determine whether the right-angle plate is qualified and improve detection accuracy and detection efficiency.

The invention relates to the technical field of electric appliance control, in particular to an electric appliance control method, an electric appliance control system and a robot, and the electric appliance control method comprises the following steps: receiving a control instruction for controlling a target electric appliance; calling the electric appliance information of the target electric appliance, and judging whether the mobile equipment is within the wireless receiving range of the target electric appliance or not, and when the mobile equipment is not within the wireless receiving range of the target electric appliance, sending the target electric appliance to the mobile equipment; and the movable equipment moves to the wireless receiving range of the target electric appliance and wirelessly controls the target electric appliance. According to the electric appliance control method, the electric appliance control system and the robot provided by the invention, the convenience of electric appliance control is effectively improved.

A method for judging the number of layers of graphene oxide based on thermal enhanced optical contrast comprises the steps that firstly, a graphene oxide solution is spin-coated, dripped or immersed on the surface of a pre-cleaned target substrate, natural drying is conducted, then the target substrate is put into a heating device, vacuumizing is conducted, the temperature is increased to the hightemperature, and each heating temperature is kept for a certain period of time; meanwhile, after each step of heat treatment is completed, an optical microscope is used for shooting an optical picture adsorbed with a graphene oxide film area in the same sample area on the surface of the target substrate, and R, G or B values of the graphene oxide film and the surface of the adjacent substrate inthe optical picture are collected through RGB reading software; the average value of the optical contrast of thermal enhancement of the graphene oxide film is obtained through an optical contrast formula, the number of layers of graphene oxide is simply, rapidly and accurately judged by utilizing the optical contrast close to complete recovery after thermal treatment of graphene oxide, and the method is low in equipment requirement, low in detection cost and capable of detecting a large number of samples at a time.

The invention relates to the technical field of civil construction, in particular to an expressway interchange ramp roadbed widening and solidified soil filling construction method which comprises the steps that the soil feeding range of a roadbed of each area is determined; using solidified soil to loosely lay the roadbed in each area; a bulldozer is used for sequentially flattening the subgrade of each area, and a land leveler is used for sequentially leveling the subgrade of each area; the roadbed in a single area is rolled, and whether the roadbed meets the standard or not is judged after rolling; the roadbed meeting the standard is subjected to watering maintenance, and solidified soil is added layer by layer after maintenance is completed; and renovating the surface of the roadbed and the slope. After rolling of the single-layer roadbed is completed, whether the flatness or compactness of the roadbed meets the standard or not is judged according to the thickness change amount of the roadbed, corresponding operation is used according to the judgment result so that the rolled single layer can meet the standard, and the filling efficiency of the roadbed is effectively improved.