Abstract: An electric motor includes electric motor stator and a rotor rotatably inserted in the electric motor stator. The electric motor stator includes a stator iron core and an end cap. The end cap is formed, in an interior thereof, with a receiving space that receives the stator iron core therein. The stator iron core includes an annular stator yoke and a plurality of stator teeth extending radially from an internal circumferential surface of the stator yoke. The stator yoke has an external circumferential surface that is recessed to form positioning grooves. The end cap has an internal surface that is protruded to form positioning posts that are respectively insertable into and connectable with the positioning grooves. The positioning grooves respectively correspond to the stator teeth in a radial direction of the stator iron core.

Abstract: A method of forming low-k material is provided. The method includes providing a plurality of core-shell particles. The core of the core-shell particles has a first ceramic with a low melting point. The shell of the core-shell particles has a second ceramic with a low melting point and a low dielectric constant. The core-shell particles are sintered and molded to form a low-k material. The shell of the core-shell particles is connected to form a network structure of a microcrystal phase.

Abstract: A method, apparatus, and computer program product for detecting volatile organic compounds (VOCs) in a gas is provided. An example VOC detector may include a processing device and a detecting region. The detecting region may further include a first interdigital pole electrically connected to a separation voltage source, a second interdigital pole electrically connected to a switch, and an ionization device configured to interact with the gas within the detecting region to create a plurality of ionized gas molecules. To facilitate detection of VOCs, the switch may alternate the connection of the second interdigital pole between a compensation voltage source and the processing device. The processing device may determine a number of volatile organic compounds in the gas based at least in part on a number of ionized gas molecules that contact the second interdigital pole while the second interdigital pole is electrically connected to the processing device.

Abstract: Methods and systems for detecting and limiting the water in a photoionization detector are provided. The method may include powering off a lamp configured to ionize particles of air. The method may also include monitoring a signal from the photoionization detector. The signal may be monitored based on a current between a signal electrode and a bias electrode. In an instance the signal is above a signal threshold, the method may also include electrolyzing one or more particles of water present in the photoionization detector by closing a leakage switch in order to allow current to flow through the bias electrode and the signal electrode. In an instance the signal is below the signal threshold, the method may include powering on the lamp to begin photoionization detection. Corresponding systems are also provided.

Abstract: Embodiments are provided for ultraviolet lamps for use in photoionization detectors and methods of manufacturing same. An example method of manufacturing an ultraviolet lamp includes providing a glass tube, the glass tube defining a first end; applying a mixed powder coating composition onto an edge surface of the first end of the glass tube, the mixed powder coating composition comprising indium powder and glass powder; applying a glass powder coating composition over the mixed powder coating composition; attaching a crystal window to the edge surface of the first end of the glass tube; and heating the glass tube and the crystal window to seal the crystal window to the glass tube.

Abstract: Example methods and apparatuses for liquid substance vaporization and concentration level determination are provided. An example apparatus may include a constant temperature chamber having a vaporization housing that includes a capillary component disposed within and a syringe assembly configured to inject a liquid substance to the capillary component. An example method may include determining an injection rate for injecting the liquid substance to the capillary component, determining a flow rate of the gaseous substance in the vaporization housing, and calculating a concentration level of a vaporized substance based on the injection rate and the flow rate.

Abstract: Methods and systems for detecting and limiting the water in a photoionization detector are provided. The method may include powering off a lamp configured to ionize particles of air. The method may also include monitoring a signal from the photoionization detector. The signal may be monitored based on a current between a signal electrode and a bias electrode. In an instance the signal is above a signal threshold, the method may also include electrolyzing one or more particles of water present in the photoionization detector by closing a leakage switch in order to allow current to flow through the bias electrode and the signal electrode. In an instance the signal is below the signal threshold, the method may include powering on the lamp to begin photoionization detection. Corresponding systems are also provided.

Abstract: Devices, apparatuses, methods, and computer program products are provided for hemorrhage detection. An example sensing device for hemorrhage detection includes a blood detection layer that includes a permeable film and one or more optical fibers supported by the permeable film. The device also includes an optical sensor that includes a light source that emits light and an optical receiver in optical communication with the light source via the one or more optical fibers. The optical receiver generates optical data responsive to the light emitted by the light source and received by the optical receiver via the one or more optical fibers indicative of at least a wavelength of the light. The device further includes a controller operably coupled with the optical sensor that receives the optical data generated by the optical receiver in response to the emitted light and determines an amount of blood based upon the optical data.

Abstract: The present application discloses a dehumidifier and a dehumidification system. The dehumidifier comprises a housing and a water absorber located in the housing. An opening and a plug are provided at a lower portion of the housing. The plug is used to seal the opening, and the water absorber can be removed via the opening when the opening is open. A conduit is provided above the housing, an upper gas inlet and an upper gas outlet are provided on the conduit, a gas to be dehumidified enters the conduit via the upper gas inlet and is discharged from the conduit via the upper gas outlet, and the water absorber is used to absorb water in the gas. The dehumidifier according to the present application is easily maintainable.

Abstract: Methods, apparatuses and systems for calibrating gas detectors are disclosed. An example calibration apparatus may have a gas supply element configured to provide a background gaseous substance within at least a portion of the calibration apparatus, a nebulizing element configured to generate the testing gaseous substance by transforming a testing solution in conjunction with the background gaseous substance, a pressure control element configured to regulate airflow in order to maintain a constant air pressure within the at least a portion of the calibration apparatus, and a controller component in electronic communication with the gas supply element, the nebulizing element and the pressure control element.

Abstract: Methods, apparatuses, and systems for providing an alternating current (AC) voltage supply for a photoionization detector lamp from a direct current (DC) voltage source are provided. An example apparatus may include a DC voltage to DC voltage (DC/DC) converter circuitry, and a feedback circuitry that is electronically coupled to the DC/DC converter circuitry and converts a reference AC voltage to a feedback DC voltage for the DC/DC converter circuitry. In some examples, the feedback circuitry may be electronically coupled to a DC voltage to AC voltage (DC/AC) converting circuitry to obtain the reference AC voltage.

Abstract: A control circuit is provided. A memory is configured to store a program code. A central processing unit (CPU) executes a plurality of instructions according to the program code. When a specific instruction is executed by the CPU, the CPU generates a control signal. A power mode management circuit generates a selection signal according to the control signal. A processing circuit transforms first power data according to the selection signal. A first storage circuit stores the first power data. The processing circuit generates first set data and second set data according to first power data. A first specific device operates in a first power mode according to the first set data. A second specific device operates in a second power mode according to the second set data. The first storage circuit, the power mode management circuit and the processing circuit are in an always-on state.

Abstract: Example methods and apparatuses for liquid substance vaporization and concentration level determination are provided. An example apparatus may include a constant temperature chamber having a vaporization housing that includes a capillary component disposed within and a syringe assembly configured to inject a liquid substance to the capillary component. An example method may include determining an injection rate for injecting the liquid substance to the capillary component, determining a flow rate of the gaseous substance in the vaporization housing, and calculating a concentration level of a vaporized substance based on the injection rate and the flow rate.

Abstract: The gas detector calibration system comprises a control unit, a temperature regulation assembly, a pump, and a temperature sensor. The temperature regulation assembly has an inlet and an outlet, and the pump has a pump inlet and a pump outlet. The outlet of the temperature regulation assembly is coupled to the pump inlet of the pump. The temperature regulation assembly receives ambient air through the inlet, regulates a temperature of the ambient air, and supplies the ambient air to the pump through the outlet. The pump supplies the ambient air to a gas detector for regulating a temperature of the gas detector. The temperature sensor detects the temperature and sends a signal indicative of the temperature to the control unit. The control unit determines whether the temperature is within a predefined temperature range, when within the predefined temperature range, the gas detector is calibrated using a calibration gas.

Abstract: A control circuit including an input-output pin, an image driver, a sensing circuit, a first path, a second path and a microcontroller circuit is provided. The input-output pin is configured to be coupled to the first pin of a display device and the second pin of a capacitive touch device. The image driver is configured to provide a driving signal. The sensing circuit determines whether the capacitive touch device is touched according to the voltage of the second pin. The microcontroller circuit turns on the first path and turns off the second path to transmit the driving signal to the display device via the input-output pin in a first operation period. The microcontroller circuit turns on the second path and turns off the first path to transmit the voltage of the second pin to the sensing circuit via the input-output pin in a second operation period.

Abstract: A control circuit including an input-output pin, an image driver, a sensing circuit, a first path, a second path and a microcontroller circuit is provided. The input-output pin is configured to be coupled to the first pin of a display device and the second pin of a capacitive touch device. The image driver is configured to provide a driving signal. The sensing circuit determines whether the capacitive touch device is touched according to the voltage of the second pin. The microcontroller circuit turns on the first path and turns off the second path to transmit the driving signal to the display device via the input-output pin in a first operation period. The microcontroller circuit turns on the second path and turns off the first path to transmit the voltage of the second pin to the sensing circuit via the input-output pin in a second operation period.

Abstract: Methods and systems for detecting and limiting the water in a photoionization detector are provided. The method may include powering off a lamp configured to ionize particles of air. The method may also include monitoring a signal from the photoionization detector. The signal may be monitored based on a current between a signal electrode and a bias electrode. In an instance the signal is above a signal threshold, the method may also include electrolyzing one or more particles of water present in the photoionization detector by closing a leakage switch in order to allow current to flow through the bias electrode and the signal electrode. In an instance the signal is below the signal threshold, the method may include powering on the lamp to begin photoionization detection. Corresponding systems are also provided.

Abstract: Methods, apparatuses, and systems for providing an alternating current (AC) voltage supply for a photoionization detector lamp from a direct current (DC) voltage source are provided. An example apparatus may include a DC voltage to DC voltage (DC/DC) converter circuitry, and a feedback circuitry that is electronically coupled to the DC/DC converter circuitry and converts a reference AC voltage to a feedback DC voltage for the DC/DC converter circuitry. In some examples, the feedback circuitry may be electronically coupled to a DC voltage to AC voltage (DC/AC) converting circuitry to obtain the reference AC voltage.

Abstract: A control circuit is provided. A memory is configured to store a program code. A central processing unit (CPU) executes a plurality of instructions according to the program code. When a specific instruction is executed by the CPU, the CPU generates a control signal. A power mode management circuit generates a selection signal according to the control signal. A processing circuit transforms first power data according to the selection signal. A first storage circuit stores the first power data. The processing circuit generates first set data and second set data according to first power data. A first specific device operates in a first power mode according to the first set data. A second specific device operates in a second power mode according to the second set data. The first storage circuit, the power mode management circuit and the processing circuit are in an always-on state.

Abstract: A system including a field device, a power interface, a short-range wireless transceiver, and at least one processor. The field device is configured to obtain measurements of one or more process variables in an industrial process control and automation system. The power interface is configured to provide 4-20 ma current to the apparatus and the field device. The short-range wireless transceiver is configured to transmit and receive the measurements. The at least one processor is configured to receive, from one or more other devices, a request for access to the measurements and transmit, to the one or more other devices, the measurements.