Abstract: An electromagnetic heater for hookah includes a shell and an electromagnetic heating body, the shell includes a heat-insulating base plate, and the electromagnetic heating body includes an excitation coil and a drive circuit, the excitation coil is in a shape of a sheet and formed by spiraling a wire outward from a center, and the excitation coil is configured to face the heat-insulating base plate and send out a high-frequency AC signal by which an eddy current effect is produced on an electromagnetic induction element to the heat-insulating base plate, under a control of the drive circuit. The heater applying to the hookah can increase the heating efficiency, the safety and the reliability.

Abstract: A method for detecting the number of puffs of an electronic cigarette, includes sampling a real-time temperature of a heating unit, and determining a temperature difference; integrating the temperature difference in time to obtain an integral value I; calculating a first limit H according to the integral value I; and judging whether the real-time integral value I is beyond the first limit value H, if yes, determining that one puff of smoking happens. The method calculates a limit value that is a real-time value and varied with the change trend and change amplitude of the temperature difference. When the environment or the usage habit changes, the corresponding first limit can still be calculated according to the integral value of the current temperature difference to accurately determine the smoking behavior, thereby effectively improving the detection accuracy of the number of puffs of smoking.

Abstract: A temperature controller for electronic smoking device includes a metal heating sheet for heating a cigarette and a controller for controlling temperature of the heating sheet by collecting a real-time resistance of the heating sheet. The power drive unit is electrically connected to a power source and the heating sheet respectively, the control unit is electrically connected to the power drive unit and the real-time resistance detection unit respectively, and the analog-to-digital conversion unit is configured to convert an analog signal output by the real-time resistance detection unit into a digital signal that is transmitted to the control unit. The real-time resistance detection unit is configured to detect a real-time resistance of the heating sheet, and the control unit is configured to adjust an output power of the power drive unit according to the real-time resistance of the heating sheet. The controller realizes precise temperature control and convenient operation.

Abstract: A portable electronic smoking device includes a housing, an electronic smoking apparatus, and an energy storage device. The housing is provided with at least one receiving slot for receiving the electronic smoking apparatus, the electronic smoking apparatus is mounted on a bottom wall of the receiving slot, and a part of an outer peripheral surface of the electronic smoking apparatus is covered by the receiving slot. The housing is mounted with a first magnet. The electronic smoking apparatus is received in the receiving slot when it's not in use, a part of the body of the electronic smoking apparatus is exposed, in the state where the electronic smoking apparatus is placed horizontally. Thus it's convenient to use and reachable, and it's helpful to the heat dissipation of the electronic smoking apparatus. In addition, the first magnet is configured at the bottom wall of the receiving slot, without worrying about the electronic smoking apparatus falling from the receiving slot.

Abstract: A method for detecting the number of puffs of an electronic cigarette, includes sampling a real-time temperature of a heating unit, and determining a temperature difference; integrating the temperature difference in time to obtain an integral value I; calculating a first limit H according to the integral value I; and judging whether the real-time integral value I is beyond the first limit value H, if yes, determining that one puff of smoking happens. The method calculates a limit value that is a real-time value and varied with the change trend and change amplitude of the temperature difference. When the environment or the usage habit changes, the corresponding first limit can still be calculated according to the integral value of the current temperature difference to accurately determine the smoking behavior, thereby effectively improving the detection accuracy of the number of puffs of smoking.

Abstract: A temperature controller for electronic smoking device includes a metal heating sheet for heating a cigarette and a controller for controlling temperature of the heating sheet by collecting a real-time resistance of the heating sheet. The power drive unit is electrically connected to a power source and the heating sheet respectively, the control unit is electrically connected to the power drive unit and the real-time resistance detection unit respectively, and the analog-to-digital conversion unit is configured to convert an analog signal output by the real-time resistance detection unit into a digital signal that is transmitted to the control unit. The real-time resistance detection unit is configured to detect a real-time resistance of the heating sheet, and the control unit is configured to adjust an output power of the power drive unit according to the real-time resistance of the heating sheet. The controller realizes precise temperature control and convenient operation.

Abstract: A portable electronic smoking device includes a housing, an electronic smoking apparatus, and an energy storage device. The housing is provided with at least one receiving slot for receiving the electronic smoking apparatus, the electronic smoking apparatus is mounted on a bottom wall of the receiving slot, and a part of an outer peripheral surface of the electronic smoking apparatus is covered by the receiving slot. The housing is mounted with a first magnet. The electronic smoking apparatus is received in the receiving slot when it's not in use, a part of the body of the electronic smoking apparatus is exposed, in the state where the electronic smoking apparatus is placed horizontally. Thus it's convenient to use and reachable, and it's helpful to the heat dissipation of the electronic smoking apparatus. In addition, the first magnet is configured at the bottom wall of the receiving slot, without worrying about the electronic smoking apparatus falling from the receiving slot.

Abstract: A biochemical reactor involves an online cell examination microscope thereon. The online cell examination microscope comprises a main body, an objective lens, an observation entrance window, a sampling device, an external light source system. Said observation entrance window lies in front of said main body and the sampling device lies in front of said observation entrance window. An objective lens and said external light source system lie behind the observation entrance window in the main body. A reflector prism is installed between the external light source system and the objective lens. A reflector lies behind the objective lens and in front of the observation entrance window. An annular diaphragm is placed in front of the reflecting prism. A CCD or an area image sensor is arranged on the upper side of the reflectance prism.

Abstract: A biochemical reactor involves an online cell examination microscope (4) thereon. Said online cell examination microscope (4) comprises a main body (43), an objective lens (24), an observation entrance window (22), a sampling device (40), an external light source system (60). Said observation entrance window (22) lies in front of said main body (43) and the sampling device (40) lies in front of said observation entrance window (22). An objective lens (24) and said external light source system (60) lie behind the observation entrance window (22) in the main body (43). A reflector prism (25) is installed between the external light source system (60) and the objective lens (24). A reflector (23) lies behind the objective lens (24) and in front of the observation entrance window (22). An annular diaphragm (26) is placed in front of the reflecting prism (25). A CCD or an area image sensor (30) is arranged on the upper side of the reflectance prism (25).