In-vehicle positioning device

Abstract

A vehicle positioning device, suitable for portable electronic devices and adapted for installation in a vehicle, includes: an ultra-wideband (UWB) circuit and a control circuit. The UWB circuit detects a first communication signal from the portable electronic device. The control circuit includes a Bluetooth element and a microcontroller, connected to the UWB circuit. The Bluetooth element detects a second communication signal from the portable electronic device. The microcontroller controls at least one vehicle lock if, based on the first communication signal, the distance to the corresponding first communication signal is no greater than a preset distance, and based on the second communication signal, it determines that the Bluetooth element is paired with the portable electronic device.

Claims

1. A vehicle positioning device, suitable for a portable electronic device and adapted to be installed in a vehicle, comprising: an ultra-wideband circuit for detecting a first communication signal of the portable electronic device; and a control circuit including a Bluetooth element and a microcontroller, the control circuit being connected to the ultra-wideband circuit, the Bluetooth element for detecting a second communication signal of the portable electronic device, the microcontroller for determining, based on the first communication signal, that the distance corresponding to the first communication signal is not greater than a preset distance, and based on the second communication signal, determining that the Bluetooth element is paired with the portable electronic device, and controlling at least one vehicle lock of the vehicle, wherein the ultra-wideband circuit includes: a substrate including a clearance area and a non-clearance area; and an ultra-wideband crystal. A chip is disposed on the substrate and located in the non-clearance area; a first antenna is disposed on the substrate and located in the non-clearance area; a first connection line is disposed on the substrate and located in the non-clearance area, the first connection line being used to connect the first antenna to the ultra-wideband chip; a second antenna is disposed on the substrate and located in the non-clearance area; a second connection line is disposed on the substrate and located in the non-clearance area, the second connection line being used to connect the second antenna to the ultra-wideband chip; and a plurality of vias are disposed in the non-clearance area and surround the first connection line and the second connection line.

2. The vehicle positioning device as claimed in claim 1 further includes: a wireless radio frequency switch circuit connected to the control circuit, the wireless radio frequency switch circuit being used for controlled switching to connect the portable electronic device to the control circuit.

3. The vehicle positioning device as claimed in claim 1 further comprises: a DC-DC converter connected to the ultra-wideband circuit and the control circuit, the DC-DC converter being used to receive a first input voltage and output the first input voltage to the ultra-wideband circuit and the control circuit.

4. The vehicle positioning device as claimed in claim 3, wherein the DC-DC converter includes an integrated shielded inductor.

5. The vehicle positioning device as claimed in claim 3 further comprises: a bus chip connected to the control circuit; and a voltage regulator connected to the bus chip, the voltage regulator being connected to a power source to receive a second input voltage and output the second input voltage to the bus chip.

6. The vehicle positioning device as claimed in claim 5, wherein the DC-DC converter, the bus chip, and the voltage regulator are disposed separately from each other.

7. The vehicle positioning device as claimed in claim 1, wherein the clearance area is located at the end of the substrate.

8. The vehicle positioning device as claimed in claim 2, wherein the wireless radio frequency switch circuit comprises: a substrate; a wireless radio frequency switch disposed on the substrate and located in the non-clearance area; another first antenna disposed on the substrate and located in the non-clearance area; another first connection line disposed on the substrate and located in the non-clearance area, the other first connection line being used to connect the other first antenna to the wireless radio frequency switch; another second antenna disposed on the substrate and located in the non-clearance area; another second connection line disposed on the substrate and located in the non-clearance area, the other second connection line being used to connect the other second antenna to the wireless radio frequency switch; a third connection line disposed on the substrate and located in the non-clearance area, the third connection line being used to connect the wireless radio frequency switch to the control circuit; and a plurality of vias disposed in the non-clearance area and surrounding the other first connection line, the other second connection line and the third connection line.

9. The vehicle positioning device as claimed in claim 8, wherein the clearance area is located at the end of the substrate.

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