648 results about "Dust detection" patented technology

The invention discloses an air conditioner capable of being detected automatically and prompting a user to clean a filter screen and a prompt method thereof. The air conditioner comprises a dust detection module, a main control module and a display module. When the air conditioner operates normally, the dust detection module detects concentrations of dust in the environment where the air conditioner is used and sends dust concentration values to the main control module; the main control module records operation durations under different dust concentrations according to the received values of the concentrations, detected by the dust detection module, of dust in the environment where the air conditioner is used, and the accumulated operation duration is calculated through conversion; when the accumulated operation duration of the air conditioner under the environments with different dust concentrations reaches to a threshold value, the display module prompts the user that the filter screen needs to be cleaned, so the dust accumulation condition of the filter screen can be displayed in time, the user can clean the filter screen in time through display of the air conditioner, and it is guaranteed that the air conditioner operates under the optimal state. Through the prompt method, the dust accumulation degree of dust on the filter screen under the operation environment of the air conditioner can be embodied more obviously.

This invention enables suppression of the influence on a captured image of dust even when dust sticks to an image sensor, a protective glass fixed on the image sensor, or a filter. An image capturing apparatus includes an image sensor which generates an image signal by photo-electric conversion of an object image, a dust position detection unit which detects, from a dust detection image signal as the image signal generated by causing the image sensor to capture a dust detection object as an object having an almost uniform color, dust position information that is information of the position and size of dust in the image sensing plane of the image sensor, a lens information acquisition unit which acquires lens information of a lens used upon capturing the object, and a recording unit which records the dust position information detected by the dust position detection unit and the lens information acquired by the lens information acquisition unit in association with captured image data.

A system and method for electronically detecting the accumulation of dust within a computer system using a capacitive dust sensor. The dust detection system may be implemented on a smaller computer, such as an individual PC, or in a more expansive system, such as a rack-based server system (“rack system”) having multiple servers and other hardware devices. In one embodiment, each server in a rack system includes a capacitive sensor responsive to the accumulation of dust. The capacitive sensor may include one or more capacitive plates integral with a heatsink. As dust collects on the capacitive plates, the capacitance increases. When a capacitance setpoint is reached, indicating the dust has reached a critical level, an alert is generated. The alerts may be received by a management console for the attention of a system administrator. Each alert may contain the identity of the server generating the alert, so that the system administrator knows which server(s) are to be removed for cleaning.

An image reading device compares pixel values of an image data, which is output when a document is not at a reading position, with a threshold and generates a first dust detection data; compares a image data, which is output while the document is passing the reading position, with a threshold and generates a second dust detection data; when dust is indicated as being present at a matching position in a main scanning direction in both the first dust detection data and the second dust detection data, generates a third dust detection data; and judges that noise is present when the third dust detection data indicates that dust is continuously present for at least a prescribed length in a sub scanning line direction.

System for a dust filter unit includes dust detector to measure dust concentration in an outlet conduit of the filter unit. A controller establishes the detected dust concentration following a cleaning cycle of a filter of the unit and in one form compares that detected concentration to a baseline concentration to identify whether there is possible leak in the filter. The system also includes monitoring arrangements to measure pressure profiles in the unit to assess the state of values and/or filters in the unit. Methods of detecting the state of a filter unit are also described.

The invention discloses a smoke dust detection and purifying method and device applied in a 3D printing sealed cabin. The smoke dust detection and purifying device comprises a gas circulation and purifying system for conducting circulation purifying on gas in the sealed cabin, a smoke dust concentration detection device for detecting the smoke concentration in the sealed cabin, an oxygen detection device for detecting the oxygen content in the sealed cabin and a control device. According to the smoke dust detection and purifying method and device, the gas purity in the sealed cabin is kept by continuously adjusting the rotating speed of a motor of a smoke dust filter; furthermore, the control device detects signals of the smoke dust concentration detection device continuously, gives out corresponding control commands and sends the smoke dust concentration detection signals, the rotating speed level of the motor of the smoke dust filter and the pressure difference signals of a first pressure sensor and a second pressure sensor to a display. By means of the smoke dust detection and purifying method and device, the molding stability and part quality of a 3D metal printing device can be improved greatly, and safety and reliability in the machining process are guaranteed.

The object of this invention is to provide an image reading apparatus capable of greatly reducing generation of a black streak image caused by dust, dirt, or the like at a flow scanning position on a document glass table in flow scanning of reading a document image while moving the document sheet at a predetermined speed. To achieve this object, the CPU of the image reading apparatus performs dust detection processing of detecting dust on the document glass table by a dust detection circuit during a document nonreading period. The CPU executes dust correction processing based on the dust detection result during continuous document reading. During an interval between the end of a series of image reading JOBs and the next image reading JOB, the CPU performs dust avoidance processing of changing the flow scanning position to a position free from any dust on the document glass table. If dust is difficult to avoid, the CPU inhibits flow scanning and executes control of switching flow scanning to optical scanning document reading.

The invention belongs to the field of coal mine safety monitoring devices, and particularly relates to a coal mine underground roadway ventilation alarm device. The coal mine underground roadway ventilation alarm device comprises a ventilation detection unit, a poisonous gas detection unit, a dust detection unit, a human body detection unit, a microprocessor, an alarm unit and a wireless communication module; the poisonous gas detection unit is used for detecting the concentrations of methane, CO, NO2 and SO2 inside an underground roadway in real time; the dust detection unit is used for detecting the concentration of dust inside the underground roadway in real time; the human body detection unit is used for detecting whether a person exists or not; and the wireless communication module is used for sending detection results to a monitoring center and a mobile client. The coal mine underground roadway ventilation alarm device can achieve automation and intelligence of a mine ventilation system, starting and stopping of a standby draught fan are automatically controlled according to the underground gas concentration, the ventilation capacity in the roadway is ensured, and thus the requirements for safe production and reliable operation are met; and meanwhile, alarms of different kinds of voice can be automatically given out according to the out-of-limit conditions of various related important monitoring indexes.

A system and method are used for electronically detecting the accumulation of dust within a computer system using a capacitive dust sensor. The dust detection system may be implemented on a smaller computer, such as an individual PC, or in a more expansive system, such as a rack-based server system (“rack system”) having multiple servers and other hardware devices. In one embodiment, each server in a rack system includes a capacitive sensor responsive to the accumulation of dust. The capacitive sensor may include one or more capacitive plates integral with a heatsink. As dust collects on the capacitive plates, the capacitance increases. When a capacitance setpoint is reached, indicating the dust has reached a critical level, an alert is generated. The alerts may be received by a management console for the attention of a system administrator. Each alert may contain the identity of the server generating the alert, so that the system administrator knows which server(s) are to be removed for cleaning.

A new processing capability for desert dust enhancement using imager data from the Sea-viewing Wide Field of View Sensor (SeaWiFS) has been developed for Naval meteorology/oceanography (MetOc) operations support. The data are captured via direct broadcast high-resolution picture transmission (HRPT) at Navy Regional Centers in Rota, Bahrain, and Yokosuka, and processed at the Naval Research Laboratory in Monterey. The raw data are calibrated, corrected for missing lines and clutter, corrected for molecular scatter contamination, and enhanced through multispectral combination to yield value added products. The processing has been automated completely such that products, generated upon receipt of data, are hosted upon a password protected website typically 60 to 90 minutes from time of initial capture. This invention summarizes the SeaWiFS instrument capabilities, the protocol followed for automated near real-time processing, a physical basis for the NRL enhancements, and specific examples of the products with extension to over-land dust enhancement as enabled by MODIS. It closes with a glimpse of the potential utility of these products from the perspective of the warfighter.

A photovoltaic plate dust detecting device comprises a dust sensor, an irradiance sensor, a power measuring unit and a controller. The dust sensor is connected to the controller. The irradiance sensor is connected to the controller. The power measuring unit is connected to the controller. The controller is connected to the dust sensor, the irradiance sensor and the power measuring unit and is used for outputting a control signal according to the received dust quantity value, the received irradiance strength value and/or the received generating power value. According to the photovoltaic plate dust detecting device, the effect of dust on the photovoltaic generating efficiency can be shown through quantitative data, and therefore a photovoltaic plate can be cleaned in a targeted mode, waste of manpower and material resources due to frequent cleaning and the effect on the generating benefit due to decreasing of the generating efficiency caused by irregular cleaning are prevented, and the photovoltaic plate dust detecting device plays an important role in reducing the running cost of a photovoltaic power generation system and improving the generating efficiency of the photovoltaic power generation system.

The invention relates to the field of clothes storage and particularly relates to an intelligent dirty clothes storage cabinet. The intelligent dirty clothes storage cabinet comprises a cabinet body and an intelligent control system; a loading drawer and a storage drawer are arranged at the front part of the cabinet body; an ultraviolet sterilization device and a drying device are arranged on the top of the loading drawer; a hoisting channel is arranged at the rear part of the cabinet body and a hoisting plate is arranged in the cabinet body; a hoisting device for driving the hoisting plate to do up-down movement and horizontal movement is arranged on the top of the cabinet body; the intelligent control system comprises a processing controller, a human body induction sensor, an input device, a weight sensor, and a bacterium detector, a humidity detector and a dust detector which are arranged on the inner side of a wall of the loading drawer. When a human body gets close, a storage system is opened by automatic induction and clothes are automatically folded; the dirty and old degrees of the clothes are automatically identified, and the clothes are stored by classes by combining the classes of the clothes, so that mutual pollution between the clothes is avoided; and the clothes are convenient to find. The content of bacteria and the humid degree in the clothes can be automatically detected and the clothes are disinfected and dried when the content of the bacteria and the humid degree exceed the standards, and safe storage of the clothes is realized.

The present invention discloses a photovoltaic power station monitoring and operation integration system. The technical scheme of the invention concretely comprises the steps of: detecting generationcurrents and voltages of photovoltaic cells through a Hall sensor in photovoltaic combiner boxes and transmitting the generation currents and voltages to a processor; connecting and gathering detection modules of the plurality of combiner boxes in a RS485 communication mode to perform transmission through a wireless module; determining a photovoltaic panel fault condition through a photovoltaic panel fault rapid detection location system based on an unmanned aerial vehicle; monitoring and cleaning a photovoltaic panel through a cleaning robot carrying a dust detection sensor; locating actual positions of faults through the photovoltaic panel fault rapid detection location system based on the unmanned aerial vehicle, and sending fault information through a wireless communication module; andapplying the wireless communication network to connect each system of a power station to allow operation and maintenance work to be integrated and intelligent.

The invention discloses a video technology based real time stockyard airborne dust detection and intelligent watering dust depositing device and method. The device comprises a video monitoring device,a computer, a wind speed and wind direction measuring device, a PLC and a watering device. An optimized neural network or other algorithm is combined with static and dynamic characteristics of airborne dust to process real-time video data of stockyard airborne dust, an initial coordinate of a dust area and an estimated value of the airborne dust concentration are calculated, wind speed and wind direction measurement data is combined to implement calibration, the coordinate of the dust area, namely the coordinate of a watering area, is determined finally, and according to the coordinate of thewatering area and the estimated value of the airborne dust concentration, the PLC controls the watering device to carry out watering dust depositing in a dynamic graded way according to areas Thus, real-time monitoring can be realized in different environmental conditions, a control instruction is timely, and the construction and maintenance cost is low; and dust is inhibited effectively, it is ensured that increase of the water content of materials stored in the stockyard is within a controllable range, and labor, material and transport materials are saved.

The present invention provides a kind of dust detection device that can detect fine dust according to the different sizes of the dust, which includes: a light emitting unit (dust detection unit 230) that emits light into the air channel through which the dust flows; A light receiving unit (dust detection unit 231) that receives light from the light emitting unit (230) and outputs a signal corresponding to the amount of light received; and amplifying units (232, 233) that amplify the signal from the light receiving unit (231). The amplifying unit (232, 233) has a plurality of magnifications corresponding to the size of the dust, so that a dust detection device capable of detecting dust containing fine dust according to the size of the dust can be provided.

There is provided an image reading apparatus that is capable increasing the detection accuracy for dust, scratches, dirt, and the like. Sixty-four lines of sampling points on a reference standard white plate are read, shading correction and averaging are carried out the read image data to suppress random noise components in the image data, the data is then stored in a sampling memory, and dust detection is carried out on the data stored in the sampling memory. Alternatively, shading correction and dust detection are carried out on image data that has been subjected to linear interpolation. It is thus possible to increase the accuracy of detection of dust, scratches, dirt, and the like while ensuring that shading correction is performed at high speed.

The invention discloses an air dust detection instrument, which comprises a detection air flow passage, an air inlet opening, an exhaust opening, a laser emitter and a light collector, wherein the air inlet opening and an exhaust opening are formed at the two sides of the detection air flow passage, the laser emitter and the light collector are relatively arranged at the head end and the tail end of the detection air flow passage, and the laser emitting end of the laser emitter and the scattering light emergent end of the light collector are respectively provided with mutually vertical polaroids. The air dust detection instrument has the advantages that the carrying is convenient, the use is easy, the principle is simple, and the like. The length of the laser passing through the detection air flow is increased, and the dust detection sensitivity is improved. In addition, the data of the detection instrument is processed by PC (personnel computer) software, so the data processing is more accurate and stronger, the real-time test data can be obtained, the continuous dust concentration change curve can be obtained, the dust concentration early warning parameters can also be conveniently set, the real-time monitoring and the early warning processing can be carried out on the air dust concentration, and the air dust detection instrument belongs to a simple and portable air dust detection instrument with great popularization values.

The invention discloses an air purification device for a workshop. The air purification device for the workshop comprises a dust detection device, a single-chip microcomputer, an air purification device and a negative oxygen ion generator, wherein the dust detection device is connected with the single-chip microcomputer and is used for transmitting the detected dust concentration information into the single-chip microcomputer; the single-chip microcomputer is connected with the air purification device and the negative oxygen ion generator at the same time, and is used for controlling the work of the air purification device and the negative oxygen ion generator; the dust detection device comprises an infrared diode and an image sensor; the image sensor is used for detecting the infrared light which is reflected by dust and emitted by the infrared diode, and transmitting the detected signals into the single chip microcomputer connected with the image sensor. The air purification device for the workshop comprises the air purification device and the negative oxygen ion generator, thus not only being capable of purifying the air in the workshop, but also being capable of releasing negative oxygen ions; therefore, the air purification device for the workshop improves the air quality of the workshop and enhances the physical fitness of workers.