3축 가속도 센서 및 홀 센서 스위치 모듈 -NMH1000, FXLS8974CF

(MAG&ACCEL CLICK)

   

개요

  • 본 제품은 3축 가속도 센서 및 홀 센서 스위치 모듈 -NMH1000, FXLS8974CF입니다.
  • NMH1000 홀센서 스위치 칩과 FXLS8974CF 3축 가속도계 센서를 탑재한 제품입니다.
  • I2C 인터페이스를 통해 마이크로컨트롤러와 통신 합니다.
  • 3.3V 시스템과 동작합니다.

특징

  • HOW DOES IT WORK?

    Mag&Accel Click is based on the NMH1000, a Hall-effect magnetic field switch, and the FXLS8974CF, a 3-axis low-g accelerometer, both from NXP Semiconductor. The switch processes its input over the functional blocks that consist of a configurable state machine, an analog-to-voltage conversion of the input, and a comparison to generate the bi-state output. The output is arranged in a linear succession. The NMH1000 has a transducer that generates a small charge proportional to the proximal magnetic flux density. The Hall-effect charge is converted to voltage and compared with the pre-defined threshold voltage. This determines the state of the switch's output.

    mag-accel-click-inner-img

    The FXLS8974CF accelerometer has a ±2/4/8/16 g user-selectable, full-scale measurement range with a 12-bit acceleration data output. It can work in several modes, such as active, hibernate, standby, and more. The integrated FIFO/LIFO buffer of 144 bytes can store 32 12-bit X/Y/Z/ data triplets. The sensor also has flexible data change detection, such as motion, freefall, and other inertial events.

    Mag&Accel Click uses a standard 2-wire I2C interface to allow the host MCU to communicate with the accelerometer. The FXLS8974CF uses a motion MOT pin to interrupt the host MCU if the motion is detected, with an accompanying Motion LED for a visual presentation. The NMH1000 is set in a standalone mode. The output of the magnetic switch, according to the pre-defined threshold, is available over the output OUT pin and, in addition, over the Field LED for visual presentation. The threshold itself can be set over the THR SEL jumper between high, medium, and low thresholds (±230, ±160, ±100G). You can also set the sampling rate over the ODR SEL jumper between high, medium, and low (10, 1, 0.1Hz).

    In addition, there is an LP Cut jumper at the bottom of the Mag&Accel Click board™, with which a low power consumption feature can be achieved.

    This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. Also, it comes equipped with a library containing functions and an example code that can be used as a reference for further development.

    SPECIFICATIONS

    Type Acceleration,Magnetic,Motion
    Applications Can be used for the development of various industrial and home applications where the magnetic field detection and the acceleration of the object is an essence
    On-board modules NMH1000 - Hall-effect magnetic field switch from NXP Semiconductor FXLS8974CF - 3-axis low-g accelerometer both from NXP Semiconductor
    Key Features Selectable threshold, selectable sample rate, output indicates of absence of a magnetic field as compared to an internally set threshold, consists of a state machine, analog-to-voltage conversion, generation of a bi-state output, arranged in linear succession, user-selectable, full-scale measurement ranges, high precision, FIFO buffers, flexible sensor data change detection function, and more
    Interface Analog,I2C
    ClickID Yes
    Compatibility mikroBUS™
    Click board size S (28.6 x 25.4 mm)
    Input Voltage 3.3V

문서

연관제품