Abstract: The present disclosure provides a self-adaption faster-than-real-time method for estimating a working condition start-up state of a unit. Firstly, an event recording sequence, an analog measurement point ID, an analog measurement point first-level alarm value and a history scatter point distribution record are read from a time sequence event record table, an analog measurement point table, an alarm threshold table and a historical scatter record table. A measured value slope of the analog measurement point is calculated according to an event recording relative time. Then, an abnormal state estimated value is calculated based on the history scatter point distribution record, the analog measurement point first-level alarm value and the measured value slope of the analog measurement point. Finally, a pre-warning is sent to remind a watchman to perform a preventive operation when the abnormal state estimated value is above the threshold.

Abstract: A small-sized vehicle-mounted projector light system including an illuminating module having a light source, a collimating lens and a film arranged in sequence, and an imaging module; the imaging module includes a curved reflector being a concave mirror with positive focal power, and a first imaging lens. The main optical axis of the illuminating module passes through the reflective surface of the curved reflector, on one side of which the first imaging lens is positioned. The invention ensures an appropriate size of an one-way dimension, no consequence of the limited space within automobile structure during installation and design, and conveniency for arrangement; the curved reflector has positive focal power and can perfect focusing, not only ensuring good projection effect, but also decreasing the number of lenses with positive focal power in the system, and effectively reduce the volume and weight of the system.

Abstract: A small-sized vehicle-mounted projector light system including an illuminating module having a light source, a collimating lens and a film arranged in sequence, and an imaging module; the imaging module includes a curved reflector being a concave mirror with positive focal power, and a first imaging lens. The main optical axis of the illuminating module passes through the reflective surface of the curved reflector, on one side of which the first imaging lens is positioned. The invention ensures an appropriate size of an one-way dimension, no consequence of the limited space within automobile structure during installation and design, and conveniency for arrangement; the curved reflector has positive focal power and can perfect focusing, not only ensuring good projection effect, but also decreasing the number of lenses with positive focal power in the system, and effectively reduce the volume and weight of the system.

Abstract: The present disclosure provides a self-adaption faster-than-real-time method for estimating a working condition start-up state of a unit. Firstly, an event recording sequence, an analog measurement point ID, an analog measurement point first-level alarm value and a history scatter point distribution record are read from a time sequence event record table, an analog measurement point table, an alarm threshold table and a historical scatter record table. A measured value slope of the analog measurement point is calculated according to an event recording relative time. Then, an abnormal state estimated value is calculated based on the history scatter point distribution record, the analog measurement point first-level alarm value and the measured value slope of the analog measurement point. Finally, a pre-warning is sent to remind a watchman to perform a preventive operation when the abnormal state estimated value is above the threshold.

Abstract: The present disclosure provides a self-adaptive test method for an intelligent prediction algorithm of analog measured values. Firstly, an event recording sequence, an analog measurement point ID and an analog measurement point alarm value are read from a time sequence event record table, an analog measurement point table and an alarm threshold table. Next, operation records of a normal operation state of a unit within a statistical cycle are acquired to form historical statistics of measured values of the analog measurement point based on switching value signals. Then, simulated measured values of the analog measurement point with time scales are calculated based on the historical statistics, the analog measurement point alarm value and an analog measurement point current measured value. Finally, sensitivity is calculated; and an alarm is sent to remind a technician to adjust the algorithm when the sensitivity is greater than a threshold.

Abstract: A large-aperture four-piece optical lens includes a first lens with positive focal power, a second lens with negative focal power, a third lens with positive focal power and a fourth lens with positive focal power which are sequentially arranged. A back of the fourth lens is provided with an image surface, an aperture diaphragm is arranged at a front end of the first lens or between the second lens and the third lens, and a vignetting diaphragm is arranged on an S7 surface of the fourth lens. An equivalent focal length of the fourth lens is greater than that of the third lens, and the equivalent focal length of the fourth lens is greater than that of the first lens. Each lens has a low sensitivity to an axial tolerance and a low assembly difficulty, and an energy utilization rate can be improved by increasing a numerical aperture.

Abstract: An optical lens is provided with three lens pieces. The optical lens includes a diaphragm, a first lens piece having positive focal power, a second lens piece having negative focal power and a third lens piece having positive focal power, arranged in sequence. The first lens piece has an S1 surface and an S2 surface. The second lens piece has an S3 surface and an S4 surface. The third lens piece has an S5 surface and an S6 surface. An S7 surface is provided on a side of the S6 surface away from the S5 surface. A lens frame is provided at the S6 surface or between the S6 and S7 surfaces. The calibers of the Si to S7 surfaces sequentially decrease. An equivalent focal length of the first lens piece is larger than that of the third lens piece. A numerical aperture of the lens is larger than 0.6.

Abstract: The present invention provides an optical projection system with microlens arrays. The optical projection system includes a light source, a collimating lens, a first microlens array, a projection source, a positive lens module, a second microlens array and a receiving surface which are arranged in sequence. The first microlens array includes n first microlens units arranged in an array. The projection source includes n projected image units arranged in an array. The second microlens array includes n second microlens units arranged in an array. The first microlens unit and the second microlens unit which are opposite to each other have a common optical axis. According to the system of the present invention, sub-real image units can be compounded and superposed on the receiving surface, such that optical crosstalk between adjacent optical channels can be avoided.

Abstract: An illuminating lens design method and an illuminating lens. The projections of the highest points of an outer surface and an inner cavity surface of the illuminating lens on the horizontal plane are overlapped, and a horizontal profile curve of the outer surface and the inner cavity surface of the illuminating lens obtained from an arbitrary height satisfies: ( | x i | a i ) n i + ( | y i | b i ) n i = 1 where ai is the projection length of a portion of an xz section basic profile curve, which is intercepted by an xiyi plane, on the xiyi plane; bi is the projection length of a portion of a yz basic profile curve, which is intercepted by the xiyi plane, on the xiyi plane; xi, yi are coordinates of certain point on the outer horizontal profile curve and the inner horizontal profile curve; ni is a real number greater than 1.

Abstract: An illuminating lens design method and an illuminating lens. The projections of the highest points of an outer surface and an inner cavity surface of the illuminating lens on the horizontal plane are overlapped, and a horizontal profile curve of the outer surface and the inner cavity surface of the illuminating lens obtained from an arbitrary height satisfies: ( | x i | a i ) n i + ( | y i | b i ) n i = 1 where ai is the projection length of a portion of an xz section basic profile curve, which is intercepted by an xiyi plane, on the xiyi plane; bi is the projection length of a portion of a yz basic profile curve, which is intercepted by the xiyi plane, on the xiyi plane; xi, yi are coordinates of certain point on the outer horizontal profile curve and the inner horizontal profile curve; ni is a real number greater than 1.

Abstract: An apparatus and method for managing a liquid volume in a container includes a detector for detecting liquid volume changes in the container during a first preset period, a first determiner for determining whether the changes are lower than the first preset threshold value, and a presenter for presenting the first prompt information in case the changes are lower than the preset threshold value.

Abstract: To overcome the disadvantages introduced by using UV sensors to detect the intensity of UV light in water purification apparatuses, a novel detection apparatus to “visualize” the quality of water in the form of visible light, instead of digitizing the intensity of UV light includes s a first detection window, coated with a first material for converting a received first ultraviolet light into a first visible light. The first ultraviolet light is emitted from an ultraviolet light source and traverses the liquid, and the detection apparatus further mixes the first visible light with second visible light to generate a third visible light. The different color of the third visible light can represent the different quality of the water.

Abstract: To improve the measurement accuracy of an air analyzer, a method of introducing position information to group and average a set of position-dependent air quality samples is proposed. The method comprises the steps of sampling the air at a first sampling rate to obtain a plurality of air quality samples by using a first sensor; sampling the positions of an apparatus at a second sampling rate to obtain a plurality of position samples; analyzing the plurality of position samples to obtain a plurality of spatial relationship information; grouping the plurality of air quality samples into a second plurality of air quality sample sets; and for each air quality sample set, calculating a representative value as the air quality value of a corresponding sampling duration. By using this method, non-position-relevant air quality samples can be excluded from the calculation of the air quality of a specific position or area.

Abstract: To overcome the disadvantages introduced by using UV sensors to detect the intensity of UV light in water purification apparatuses, the present invention provides a novel detection apparatus to “visualize” the quality of water in the form of visible light, instead of digitizing the intensity of UV light. The detection apparatus comprises a first detection window, coated with a first material for converting a received first ultraviolet light into a first visible light, wherein the first ultraviolet light is emitted from an ultraviolet light source and traverses the liquid, and the apparatus further mixes the first visible light with a second visible light to generate a third visible light. The different color of the third visible light can represent the different quality of the water.

Abstract: This invention relates to an illumination apparatus. The illumination apparatus comprises a light guide plate and a light source configured to emit light into the light guide plate through a first surface, and the light guide plate comprises a concentrator configured to direct incident light in the light guide plate so as to radiate in a direction substantially parallel to a preset plane. The preset plane is perpendicular to any one of the top surface and bottom surface of the light guide plate, and intersects the first surface and a second surface of the light guide plate or intersects the first surface and one of the side surfaces at an angle that is substantially larger than the critical angle of a total reflection. In this way, unwanted light loss in the light guide plate is reduced, and the distribution of the light intensity or luminance along the light guide plate is improved, i.e., a substantially uniform distribution of the light intensity can be achieved.

Abstract: The present invention proposes an apparatus (100) and method for managing the liquid volume in a container. The apparatus (100) comprises a detector (101) for detecting liquid volume changes in said container during a first preset period, a first determiner (102) for determining whether said changes are lower than said first preset threshold value and a presenter (103) for presenting the first prompt information in the case of said changes being lower than said preset threshold value. The apparatus and method provided in the present invention can prompt people to drink drinkable liquids such as water in time, enable people to control their drinking intake and are beneficial to their health.

Abstract: An exemplary multi-signal input testing apparatus (2) includes a testing table (20), a transfer table (21) slidably positioned on the testing table, and a pair of multi-signal input devices (25) arranged on the transfer table. Each multi-signal input device includes a pair of connect ends (251, 252). One of the connect ends includes a plurality of pinhole terminals for receiving various testing signals, and the other connect end includes a plurality of connectors for supplying the testing signals to a product to be tested. This means that several tests can be automatically performed by a same multi-signal input testing apparatus at any single testing station. This speeds the testing of the products, and helps promote the efficiency of the testing process. In addition, it can simplify the configuration of various testing equipment and save space. Furthermore, there is little or no need for manual work by operators.

Abstract: An automatic testing apparatus (200) includes a transmission floor (210), a board (220), a stopping unit (230), and a testing device (260) beside the transmission floor. The transmission floor includes a plurality of rollers (211) positioned at two sides thereof. The board positioned on the rollers includes an I/O (input/output) circuit (222) and a first connector (265) electrically connected to the I/O circuit. The testing device includes a second connector (225) matchable with the first connector. The I/O circuit is used to electrically connect to an electronic device to be tested, such as an LCD (280). The stopping unit is positioned at the transmission floor for stopping the board moving. An automatic testing method using the automatic testing apparatus for testing an electronic device is also provided. The efficiency of the automatic testing apparatus is high.

Abstract: An exemplary multi-signal input testing apparatus (2) includes a testing table (20), a transfer table (21) slidably positioned on the testing table, and a pair of multi-signal input devices (25) arranged on the transfer table. Each multi-signal input device includes a pair of connect ends (251, 252). One of the connect ends includes a plurality of pinhole terminals for receiving various testing signals, and the other connect end includes a plurality of connectors for supplying the testing signals to a product to be tested. This means that several tests can be automatically performed by a same multi-signal input testing apparatus at any single testing station. This speeds the testing of the products, and helps promote the efficiency of the testing process. In addition, it can simplify the configuration of various testing equipment and save space. Furthermore, there is little or no need for manual work by operators.

Abstract: An automatic testing apparatus (200) includes a transmission floor (210), a board (220), a stopping unit (230), and a testing device (260) beside the transmission floor. The transmission floor includes a plurality of rollers (211) positioned at two sides thereof. The board positioned on the rollers includes an I/O (input/output) circuit (222) and a first connector (265) electrically connected to the I/O circuit. The testing device includes a second connector (225) matchable with the first connector. The I/O circuit is used to electrically connect to an electronic device to be tested, such as an LCD (280). The stopping unit is positioned at the transmission floor for stopping the board moving. An automatic testing method using the automatic testing apparatus for testing an electronic device is also provided. The efficiency of the automatic testing apparatus is high.