USER MANUAL WMI Wireless Mobile Interface D-WMI2020A D-WMI2020A_User_Manual_Rev4.
1. System Overview Continental Wireless Power Charger is developed for automotive applications under the name WMI which includes three functions like: - WPC: Wireless power charger NFC: Near field communication The WMI module and their implementation in different variants inside the vehicle is depicted in Fig. 1. D-WMI2020A Front console Fig. 1 : WMI module and WMI automotive implementation inside the vehicle 1.
information, the transmitter creates a power transfer contract containing the maximum power to be delivered to the load. 1.1.2.2 Charging mode After “Ping mode”, the power transfer starts. In this operational mode, the transmitter sends the carrier at a given level defined in the power contract in the operational “Ping mode”. The WMI controls the power transferred to the smartphone, in response to the control data messages sent by the smartphone. 1.1.2.
Fig. 2 : WMI NFC block diagram 1.2.1 NFC Parameters Bellow in table 2, the technical parameters of the WMI NFC feature: Parameters Values Carrier frequency 13.56 MHz Modulation type Amplitude Shift Keying (ASK) Data rate max.
Large Antenna PCB: NFC internal antenna trace on antenna PCB is shown in green Small Antenna PCB: NFC internal antenna trace on antenna PCB is shown in green Fig. 4: NFC Internal antennas The electrical parameters of the NFC internal antenna are listed in the following table Parameters Values Antenna type Planar Printed Coil on PCB Number of turns 3 Antenna Size 109mm x 43mm Antenna Gain (dBi) @ 13.56MHz Large antenna = -50.8 dBi Antenna Gain (dBi) @ 13.
1.2.2.2 NFC external antenna: The NFC external antenna is an external component connected to the D-WMI2020A. Three variants of the external antenna are presents with the following dimensions and electrical characteristics. NFC Ext 1: Cable length 260mm Parameters Antenna model number Antenna type Number of turns Antenna Size Antenna Gain (dBi) @ 13.56MHz Values A2C16632101 Wire winding on plastic holder 3 59mm x 34.7mm -53.3 dBi NFC Ext.
2. Minimum distance from WMI to human body Minimum distances from WMI to human body are described here bellow. Distances from WMI to Human body (in cm) – WPC + NFC_int Front Sitting on Knee Leg Body Hand Arm Head Driver 6.2 7.8 38.3 9.7 23.5 78.9 Co-driver 19.6 20.4 40.5 12.6 23.5 78.9 Distances from WMI to Human body (in cm) – NFC_ext Front Sitting on Knee Leg Body Hand Arm Head Driver 30 7.4 31.5 7 19.9 65.4 3.
NCC警語 經型式認證合格之低功率射頻電機，非經許可，公司、商號或使用者均不得擅自變更 頻 率、 加大功率或變更原設計之特性及功能。 低功率射頻電機之使用不得影響飛航安全及干擾合法 通信;經發現有干擾現象時，應 立 即停用，並改善至無干擾時方得繼續使用。 前項合法通信， 指依電信法規定作業 之無線電通信。低功率射頻電機須忍受合法通信或 工業、科學及醫療用 電波輻射性電 機設備之干擾。 ISED This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: (1) This device may not cause interference.
