Motor drive unit of a DC electric motor

    公开(公告)号:US11012014B2

    公开(公告)日:2021-05-18

    申请号:US16671408

    申请日:2019-11-01

    Abstract: A motor drive unit for driving a direct current electric motor including a moving part equipped with permanent magnets. The motor drive unit, which is powered by a voltage supply source, includes a switch circuit, an inductor circuit and a capacitor circuit including a set of capacitors. By selectively opening and closing the switches of the switch circuit, a series of consecutive low energy pulses can be generated such that the power consumption of the motor drive circuit is minimized.

    Control method of a direct current electric motor

    公开(公告)号:US11063537B2

    公开(公告)日:2021-07-13

    申请号:US16656848

    申请日:2019-10-18

    Abstract: The present invention concerns a method of controlling a rotational speed of a rotor (3) of a direct current electric motor (1) comprising an inductor circuit (A, B) for rotating the rotor, which is configured to rotate continuously and is equipped with permanent magnets. The method comprises: measuring the rotational speed of the rotor; determining a time drift in the rotor rotation compared to a reference signal; defining N speed thresholds with at least one being a variable speed threshold depending on the determined time drift, the N speed thresholds defining N+1 rotational speed ranges for the rotor; determining in which one of the N+1 rotational speed ranges the determined rotational speed of the rotor is; and finally selecting an action relative to the control of the inductor circuit, based on the determined rotational speed range, for controlling the rotational speed of the rotor.

    DC electric motor with asymmetrical stator inductors

    公开(公告)号:US10972027B2

    公开(公告)日:2021-04-06

    申请号:US16671381

    申请日:2019-11-01

    Abstract: A DC motor including a continuous rotation rotor; a first inductor characterized by first parameters; a second inductor characterized by second parameters; a voltage supply unit; a measurement unit for detecting time instants when a first induced voltage in the first inductor equals a second induced voltage in the second inductor; and a control unit for controlling the application of drive voltage pulses to the inductors. The rotor faces first the second inductor before facing the first inductor when being rotated. At least one of the second parameters is selected different from a corresponding parameter of the first parameters such that a maximum induced voltage in the first inductor is greater than a maximum induced voltage in the second inductor. The control unit is arranged to trigger each of the drive voltage pulses after a detection of an equal induced voltage in the first and second inductors.

    Electronic device provided with automatic leak detection means
    4.
    发明授权
    Electronic device provided with automatic leak detection means 有权
    具有自动泄漏检测装置的电子装置

    公开(公告)号:US09488543B2

    公开(公告)日:2016-11-08

    申请号:US14167510

    申请日:2014-01-29

    CPC classification number: G01M3/002 G01M3/3272

    Abstract: The electronic device is provided with an automatic leak detection means, notably for a gas leak, in the case of the device. The automatic leak detection means includes a pressure sensor, a temperature sensor and a calculation unit connected to the pressure sensor and to the temperature sensor. The calculation unit, which is a microcontroller, the pressure sensor and the temperature sensor are arranged inside the case. In operation, the microcontroller checks, based on measurements performed by the pressure sensor and the temperature sensor over time, whether the variation in pressure in the case is within a defined margin proportional to the variation in temperature to determine whether or not the case has a sufficient degree of sealing.

    Abstract translation: 在该装置的情况下,电子装置设置有特别用于气体泄漏的自动泄漏检测装置。 自动泄漏检测装置包括压力传感器,温度传感器和连接到压力传感器和温度传感器的计算单元。 作为微控制器的计算单元,压力传感器和温度传感器布置在壳体内。 在操作中,微控制器基于压力传感器和温度传感器随时间推移的测量,检查该情况下的压力变化是否在与温度变化成比例的限定裕度内,以确定壳体是否具有 足够的密封度。

    Semi-impermeable closure device
    6.
    发明授权

    公开(公告)号:US10338534B2

    公开(公告)日:2019-07-02

    申请号:US15310320

    申请日:2015-06-17

    Abstract: A portable object includes a case forming a housing inside which is arranged a device that requires air to operate, and a closure device including at least one permeable element. The closure device is arranged to provide impermeability to liquids while allowing the atmosphere inside the housing to communicate with the external atmosphere. The case comprises a recess in which a through opening is made, the recess being closed by the closure device. The closure device includes a permeable module mounted to move such that, in a gaseous environment, the permeable module is in a rest position allowing gases to penetrate the case opening through the permeable module, and in a liquid environment, the permeable module is in an operating position in which gases and liquids are blocked. The permeable module comprises a tubular support at the end of which is fixed a membrane.

    Device for controlling a continuous-rotation motor

    公开(公告)号:US11979159B2

    公开(公告)日:2024-05-07

    申请号:US18054302

    申请日:2022-11-10

    CPC classification number: H03K3/57 H02P5/56

    Abstract: A control device (2) for controlling power supply to a continuous-rotation motor, of the horological, DC type, is arranged to generate electrical pulses with a lower supply voltage to drive the rotor. The number of pulses per time interval is a function of the load applied to the motor. A voltage divider is arranged to supply the lower supply voltage with a plurality of different values and thus the electrical pulses with a variable voltage. A logic circuit counts the numbers of electrical pulses in successive time periods; to periodically select a voltage value, from among a plurality of different values, as a function of a counted number of electrical pulses or of a succession of counted numbers of electrical pulses; and to control the voltage divider so that the latter supplies the lower supply voltage with the selected voltage value after the selection of this voltage value.

    Method of detecting and calculating height of a jump

    公开(公告)号:US10751568B2

    公开(公告)日:2020-08-25

    申请号:US15831573

    申请日:2017-12-05

    Abstract: A method of detecting and calculating height of a jump performed by an individual including detection of a reception subsequent to the jump is described. The detection includes a sub-step of detecting a pressure spike of amplitude greater than a first threshold amplitude, within pressure measurements provided by a pressure sensor embedded aboard a watch worn on the wrist of the individual. Also described is calculation of a height of the jump by differencing a starting altitude corresponding to a last stable pressure measured before the pressure spike and a finishing altitude corresponding to a first stable pressure measured after the pressure spike via the pressure sensor, a stable pressure being defined as a pressure whose variations do not exceed 0.1 hectopascals for at least 2 seconds.

Patent Agency Ranking