Abstract: A bismuth oxide material with a hierarchical structure in gas detection used for detecting the content of low-concentration ammonia in an environment. The bismuth oxide material with the hierarchical structure integrally presents a microsphere shape. The diameter of the microsphere is 1-3 ?m. The bismuth oxide material is formed by self-assembling lamellar structure units with the thickness of 10-80 nm. The bismuth oxide material is made into a gas sensor with high sensitivity and selectivity to ammonia gas at room temperature, which is suitable for detecting trace harmful gas in the environment. The gas sensor made of bismuth oxide does not need to be heated when in use, so that the heating step of the conventional gas sensor is omitted, and the gas sensor can be directly placed in a normal-temperature environment for operation. The method is simple, easy to operate, high in efficiency and wide in application prospect.

Abstract: A bismuth oxide material with a hierarchical structure in gas detection used for detecting the content of low-concentration ammonia in an environment. The bismuth oxide material with the hierarchical structure integrally presents a microsphere shape. The diameter of the microsphere is 1-3 ?m. The bismuth oxide material is formed by self-assembling lamellar structure units with the thickness of 10-80 nm. The bismuth oxide material is made into a gas sensor with high sensitivity and selectivity to ammonia gas at room temperature, which is suitable for detecting trace harmful gas in the environment. The gas sensor made of bismuth oxide does not need to be heated when in use, so that the heating step of the conventional gas sensor is omitted, and the gas sensor can be directly placed in a normal-temperature environment for operation. The method is simple, easy to operate, high in efficiency and wide in application prospect.

Abstract: A refrigerator, comprising an automatic door-opening/closing apparatus mounted on a refrigerator body for driving the opening and closing of a door. When opening the door, if a first obstacle detecting apparatus detects the presence of an obstacle in front of the door, then the automatic door opening/closing apparatus stops the opening of the door; when closing the door, if a second obstacle detection apparatus detects the presence of an obstacle behind the door, then the automatic door-opening/closing apparatus stops the closing of the door. This stops the movement of the door upon the discovery of an obstacle while opening or closing the door, thus preventing the door from being damaged by collision, and when the obstacle is a person, preventing physical injuries from being caused.

Abstract: A control method for a drawer door of a refrigerator and the refrigerator. The refrigerator comprises a refrigerator body (100), a drawer door (200) mounted in the refrigerator body (100) in a front-back pushed and pulled mode, and a driving mechanism (300) driving the drawer door (200) to move forward and backward. The control method comprises: obtaining a door opening instruction or a door closing instruction; controlling the driving mechanism (300) to drive the drawer door (200) to move forward to open or move backward to close; detecting a resistance borne by the drawer door (200) during the movement; determining whether the resistance is greater than a preset resistance threshold; and if yes, controlling the driving mechanism (300) to stop running to enable the drawer door (200) to stop moving. According to the method, the problem that the drawer door (200) is difficult to open is solved, and the automatic opening and closing process of the drawer door (200) is more controllable.

Abstract: Drive mechanism for a multi-function food processor with three drive outlets each couplable separately to a food processing component. The drive mechanism including: at one end of a motor, an output shaft having a first cone gear of a cone gear set and a worm; a first central drive shaft having a second cone gear meshing with the first cone gear, the first central drive shaft associated with the first and second drive outlets; the second drive outlet associated with the first central drive shaft by a first reduction gear arrangement which includes a first gear train meshing with a sun gear sleeved on the first central drive shaft; a second central drive shaft having a worm gear driven by the worm, the second central drive shaft associated with the third drive outlet; the third drive outlet associated with the second central drive shaft by a second gear reduction arrangement.

Abstract: Disclosed is a sensor, comprising: a housing; a detecting element provided inside the housing; a first cylinder provided inside the housing and sleeved outside the detecting element, the first cylinder having an amount of elastic deformation in a direction intersecting a surface around the detecting element; a particle filler, for filling an inner cavity of the housing. When external environment produces mechanical shock to the sensor or the sensor produces mechanical vibration, the limiting action of the first cylinder and the particle filler enables the detecting element to only have very little vibration displacement or even no vibration displacement with respect to the housing. The external mechanical shock can be partially or completely absorbed by the first cylinder and the particle filler, so as to reduce vibration displacement of the detecting element caused by the shock.

Abstract: Provided are a wireless power supply system applied to a refrigerating device, a drawer assembly and the refrigerating device. The wireless power supply system comprises a control module, a display control module, a wireless communication module, a wireless power supply module, a battery module, and a detection module. The wireless power supply module comprises a wireless power supply receiving module and a wireless power supply transmitting module; when the wireless power supply receiving module gets close to the wireless power supply transmitting module so as to achieve electrical connection, the display control module is switched on; when the detection module detects that the wireless power supply receiving module gets away from the wireless power supply transmitting module so as to achieve disconnection, the battery module is discharged to switch on the display control module so as to continuously supply power to the display control module.

Abstract: A drive mechanism for a multi-function food processor with three drive outlets each couplable separately to a food processing component.

Abstract: A semiconductor package including a chip stack, at least one conductive wire, a first insulating encapsulant, a second insulating encapsulant, and a redistribution layer is provided, and a manufacturing method thereof is also provided. The chip stack includes semiconductor chips stacked on top of each other. Each semiconductor chip has an active surface that has at least one bonding region, and each bonding region is exposed by the chip stack. The conductive wire is correspondingly disposed on the bonding region. The first insulating encapsulant encapsulates the bonding region and the conductive wire. At least a portion of each conductive wire is exposed from the first insulating encapsulant. The second insulating encapsulant encapsulates the chip stack and the first insulating encapsulant. The first insulating encapsulant is exposed from the second insulating encapsulant. The redistribution layer is disposed on the first and second insulating encapsulant and electrically coupled to the conductive wire.

Abstract: The present invention relates to medical devices and provides an intra-oral scanner for a digital impression. The intra-oral scanner has a window for limiting an acquisition range. The intra-oral scanner sequentially includes, along a light path, a three-color LED light source module, a microlens array sheet, a collimator lens group, a gray coding grating plate, an optical deflector, a projection lens group, a first reflector, a second reflector and a third reflector positioned in parallel with each other with their reflective surfaces opposing to each other, and a camera. The intra-oral scanner can perform a scan directly in the human oral cavity and obtain the digital impression of three-dimensional topography of the tooth and soft tissue in real-time, thereby meeting the requirements of dentists and dental technicians to quickly and accurately obtain the oral impressions.

Abstract: The present invention relates to medical devices and provides an intra-oral scanner for a digital impression. The intra-oral scanner has a window for limiting an acquisition range. The intra-oral scanner sequentially includes, along a light path, a three-color LED light source module, a microlens array sheet, a collimator lens group, a gray coding grating plate, an optical deflector, a projection lens group, a first reflector, a second reflector and a third reflector positioned in parallel with each other with their reflective surfaces opposing to each other, and a camera. The intra-oral scanner can perform a scan directly in the human oral cavity and obtain the digital impression of three-dimensional topography of the tooth and soft tissue in real-time, thereby meeting the requirements of dentists and dental technicians to quickly and accurately obtain the oral impressions.

Abstract: A pressure sensitive and luminous keyboard includes at least one key, a pressure detecting circuit, an illumination module and a controlling unit. When one of the plural keys is depressed in response to a first pressure, the pressure detecting circuit generates a pressure-strength sensing voltage. According to the pressure-strength sensing voltage, the controlling unit will judge the strength of the first pressure and control the illumination module to emit either the first light beam or the second light beam.

Abstract: The present invention discloses an illuminating keyboard including a plurality of keys, a membrane switch circuit, a reflector plate, at least one light source and a main circuit board. The reflector plate includes a light source conducting circuit connected with the membrane switch circuit that is connected with the main circuit board. The reflector plate is arranged under the membrane switch circuit, and the at least one light source is arranged on the reflector plate and connected with the light source conducting circuit, such that the main circuit board transfers an electricity to the at least one light source through the membrane switch circuit and the light source conducting circuit.

Abstract: A two-level pressure sensitive keyboard includes at least one key and a membrane switch circuit module. The membrane switch circuit module includes a first contact, a second contact, a first spacing layer for separating the first contact from the second contact, a third contact, a fourth contact, and a second spacing layer for separating the third contact from the fourth contact. The thickness of the second spacing layer is greater than that of the first spacing layer. When the key is depressed in response to the first pressure, the first contact and the second contact are electrically connected with each other to generate a first sensing signal. When the key is depressed in response to the second pressure, the first contact and the second contact are electrically connected with each other and the third contact and fourth contact are electrically connected with each other to generate a second sensing signal.

Abstract: A two-level pressure sensitive keyboard includes at least one key and a membrane switch circuit module. The membrane switch circuit module includes a first contact, a second contact, a first spacing layer for separating the first contact from the second contact, a third contact, a fourth contact, and a second spacing layer for separating the third contact from the fourth contact. The thickness of the second spacing layer is greater than that of the first spacing layer. When the key is depressed in response to the first pressure, the first contact and the second contact are electrically connected with each other to generate a first sensing signal. When the key is depressed in response to the second pressure, the first contact and the second contact are electrically connected with each other and the third contact and fourth contact are electrically connected with each other to generate a second sensing signal.

Abstract: A keyboard with a mode-switching function is provided. The keyboard includes at least one key, a pressure sensing circuit, an illumination module, a mode-switching program and a controlling unit. The mode-switching program is executable to enable both the pressure sensing circuit and the illumination module, so that the keyboard is operated in a pressure sensitive and luminous mode. The pressure sensing circuit is used for detecting the pressure, and generating a corresponding pressure-strength sensing voltage in response to the pressure. According to the pressure-strength sensing voltage, the illumination module is controlled by the controlling unit to emit either a first light beam or a second light beam.

Abstract: A pressure sensitive and luminous keyboard includes at least one key, a pressure detecting circuit, an illumination module and a controlling unit. When one of the plural keys is depressed in response to a first pressure, the pressure detecting circuit generates a pressure-strength sensing voltage. According to the pressure-strength sensing voltage, the controlling unit will judge the strength of the first pressure and control the illumination module to emit either the first light beam or the second light beam.

Abstract: A wireless mouse includes a mouse main body, a wireless signal receiver and a storage device. The storage device is pivotally coupled to the mouse main body. In response to an elastic force resulting from a resilience element, a storage part of the storage device is easily exposed from the inside of the mouse main body so as to remove/store the wireless signal receiver from/into the storage device.

Abstract: An electronic mouse is a three-dimensional structure composed by a bottom face, a holding face, a supporting face and a handling face. The holding face is used for fingers to grip; the handling face is used for fingers to press; the supporting face is used for a palm to prop and thereby to drive the bottom face of the mouse to move on a carried surface. A cavity is formed at an appropriate location of the bottom face, and a ball cover having a circular hole is combined to the cavity, and a ball is received in the cavity and protrudes through the circular hole to be in contact with the carried surface.

Abstract: An encoder module for use in an input device of a graphic user interface (GUI) is disclosed. The encoder module includes a disk key disposed outside a housing of the input device, an upright shaft coupled to the disk key, an encoder consisting of a fixed contact electrode formed on a circuit board and a rotatable contact electrode sleeved around the shaft, and a switch consisting of a conductive electrode formed on the circuit board and a sheet conductor mounted on the circuit board and spaced from the conductive electrode. By exerting a rotating force on the disk key, the rotatable contact electrode rotates accordingly to exhibit different contact status with the fixed contact electrode so as to generate a signal indicative of a rotation quantity. By exerting a pressing force on the disk key, the sheet conductor is deformed to be in contact with the conductive electrode so as to generate a signal indicative of a conductive state to complete the input operation.