USER MANUAL WMI Wireless Mobile Interface D-WMI2020A D-WMI2020A_User_Manual_update6.
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. 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. WMI vehicle installation distance relative to human body Minimum distances from WMI to human body are described here bellow. These figures are mechanical separation distances from the transmitter to people seating within the car and do not represent the minimum compliance distance for RF exposure. Minimum RF exposure distance compliance is demonstrated at 0cm as per ISED RSS102 issue 5 and FCC §2.1093 requirements.
3. Logos • WEEE logo shall be printed in vehicle user manual. • Safety mark shall be lasered on product label and printed in vehicle user manual. 4. Regulatory statements • Safety statement shall be printed in vehicle user manual.
L’émetteur/récepteur exempt de licence contenu dans le présent appareil est conforme aux CNR d’Innovation, Sciences et Développement économique Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux conditions suivantes : 1) L’appareil ne doit pas produire de brouillage; 2) L’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.
