CN216014345U

CN216014345U - Key device

Info

Publication number: CN216014345U
Application number: CN202121505128.5U
Authority: CN
Inventors: 吴威; 吴晓磊
Original assignee: Shanghai Kostal Huayang Automotive Electric Co Ltd; Kostal Shanghai Mechatronic Co Ltd
Current assignee: Shanghai Kostal Huayang Automotive Electric Co Ltd; Kostal Shanghai Mechatronic Co Ltd
Priority date: 2021-07-01
Filing date: 2021-07-01
Publication date: 2022-03-11
Anticipated expiration: 2031-07-01

Abstract

The present invention provides a key apparatus including: a power supply module; the motion sensor is connected with the power supply module and used for confirming the motion state of the key equipment; the MCU is connected with the power supply module and is used for controlling the power supply module to supply power to the Bluetooth module according to the motion state fed back by the motion sensor; when the motion state is static, the power module is controlled to supply power to the Bluetooth module in a preset low power consumption mode; when the motion state is motion, the power module is controlled to supply power to the Bluetooth module in a preset normal mode; and the Bluetooth module is connected with the power module and the MCU and is used for transmitting control signals with the vehicle. The utility model can effectively reduce the electric output of the power supply module, thereby prolonging the service life of the power supply module.

Description

Key device

Technical Field

The present invention relates to a key device.

Background

At present, in order to improve the service life of a vehicle key, the vehicle key is required to be kept in a standby state so as to wake up the vehicle or lock the vehicle when needed by a user in time, but the battery of the vehicle key is seriously burdened by the standby state kept for a long time, and the service life of the vehicle key are reduced for a long time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a key device, which senses the motion state of the key device through a motion sensor and controls the power consumption of the key device, thereby reducing the power consumption of the key device and prolonging the service life and the service life of a power supply module.

In order to solve the technical problem, the utility model provides a key device, which has the following specific technical scheme:

a power supply module;

the motion sensor is connected with the power supply module and used for confirming the motion state of the key equipment;

the MCU is connected with the power supply module and is used for controlling the power supply module to supply power to the Bluetooth module according to the motion state fed back by the motion sensor; when the motion state is static, the power module is controlled to supply power to the Bluetooth module in a preset low power consumption mode; when the motion state is motion, the controller is used for controlling the power supply module to supply power to the Bluetooth module, the UWB module and the motion sensor in a preset normal mode;

the Bluetooth module is connected with the power module and the MCU and is used for transmitting a control signal to an external terminal;

and the UWB module is connected with the Bluetooth module and the power module and is used for positioning the relative position information of the vehicle and the key equipment.

Optionally, the bluetooth module is further configured to confirm the location information of the vehicle based on a multi-node bluetooth principle or a single-node bluetooth principle with a third-party bluetooth terminal.

Optionally, the bluetooth module is further configured to receive vehicle information of the vehicle, and the MCU is further configured to migrate the vehicle information to transfer the usage right of the key device to the vehicle.

Optionally, the UWB is further used to confirm the location information of the vehicle with a third party UWB.

Optionally, the UWB module is further configured to calculate a signal amplitude and a phase according to the received vehicle-mounted bluetooth signal, the bluetooth module is further configured to calculate a time-of-flight location, and the signal amplitude, the phase, and the time-of-flight location are used to confirm the relative position information of the key device and the corresponding vehicle.

Optionally, the MCU is further configured to refuse to receive the control signal when the relative position information exceeds a preset distance.

Optionally, the method further includes:

the MCU logic control circuit is connected with the MCU;

and the network communication circuit is connected with the Bluetooth module.

Optionally, the key device is a vehicle key.

The present invention provides a key apparatus including: a power supply module; the motion sensor is connected with the power supply module and used for confirming the motion state of the key equipment; the MCU is connected with the power supply module and is used for controlling the power supply module to supply power to the Bluetooth module according to the motion state fed back by the motion sensor; when the motion state is static, the power module is controlled to supply power to the Bluetooth module in a preset low power consumption mode; when the motion state is motion, the power module is controlled to supply power to the Bluetooth module in a preset normal mode; the Bluetooth module is connected with the power module and the MCU and is used for transmitting a control signal to an external terminal; and the UWB module is connected with the Bluetooth module and the power module and is used for positioning the relative position information of the vehicle and the key equipment.

According to the utility model, the motion sensor is configured in the key equipment, the motion state of the key equipment is sensed through the motion sensor, and when the key equipment is static, the power supply module supplies power in a low power consumption mode; when the key device moves, the power supply module is enabled to supply power in a normal mode. Therefore, the key equipment is prevented from being continuously supplied with power with higher power consumption in the non-use process, the power consumption of the key equipment is reduced, and meanwhile, the power output of the power module is effectively reduced, so that the service life of the power module is prolonged.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a key device provided in the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a key device provided in the present invention, the key device including:

a power supply module;

the MCU is connected with the power supply module and is used for controlling the power supply module to supply power to the Bluetooth module according to the motion state fed back by the motion sensor; when the motion state is static, the power module is controlled to supply power to the Bluetooth module in a preset low power consumption mode; when the motion state is motion, the power module is controlled to supply power to the Bluetooth module in a preset normal mode;

This novel specific power parameter to power module of use does not do the restriction, as long as it can satisfy motion sensor, MCU, bluetooth module's normal use can. Of course, if the key device further comprises other components, the corresponding power supply module should also be able to meet normal power supply requirements.

The motion sensor corresponds to a speed sensor, i.e. it can be ascertained that the key device is in motion when it is detected that the speed of the key device is not zero.

The MCU is used for controlling the power supply of the power supply module according to the motion state, and when the motion state is static, the power supply is carried out on the Bluetooth module in a preset low power consumption mode; when the motion state is motion, the power is supplied to the Bluetooth module in a preset normal mode. Of course, the power supply standard of the preset low power consumption mode and the preset normal mode is not specifically limited in the novel mode, but when the power supply standard is easily understood, the preset low power consumption mode is certainly smaller than the power supply power consumption of the preset normal mode.

The bluetooth module is used for transmitting control signals to an external terminal, for example, for transmitting control signals with a vehicle, for example, for unlocking the vehicle, or locking the vehicle, or opening a vehicle trunk, and the like.

On the basis of the key device described in the above embodiment, the bluetooth module may also be used to confirm the location information of the vehicle with an external bluetooth terminal based on a multi-node bluetooth principle or a single-node bluetooth principle. The multi-node bluetooth may determine the detailed location of the vehicle through a plurality of bluetooth nodes. If the device is used in coordination with other key devices positioned at the fixed point of the vehicle, the position of the vehicle structure, such as the windows of the head and the tail of the vehicle, can also be determined. The multi-node Bluetooth principle or the single-node Bluetooth principle is based on a standard BLE Bluetooth protocol with low power consumption, the Bluetooth Strength is determined by detecting the RSSI (Received Signal Strength Indicator) value of a Bluetooth Signal, and the position of each Bluetooth node is positioned based on an algorithm of trilateration. And the Bluetooth positioning can realize the positioning accuracy of meter level, the accuracy can reach 3-5 meters, and the vehicle position can be conveniently determined.

It is easy to understand that the key device can also comprise an MCU logic control circuit connected with the MCU and a network communication circuit connected with the Bluetooth module.

Based on the above embodiment, as a preferred embodiment, the key device may further include an Ultra Wide Band (UWB) module connected to both the bluetooth module and the power module, and configured to locate the relative position information between the vehicle and the key device, and in this process, the bluetooth module may be further configured to assist the UWB module in locating. The UWB module uses UWB technology, which is a wireless carrier communication technology using UWB, and uses nanosecond-level non-sine wave narrow pulse to transmit data instead of sine carrier, so that the occupied frequency spectrum range is large, and the data transmission rate can reach more than several hundred megabits per second. Signals can be transmitted over a very wide bandwidth using UWB technology.

In addition, the UWB module can also be used for receiving vehicle information of the vehicle, and the MCU can also be used for transferring the use authority of the vehicle according to the vehicle information, namely, the UWB module is used for receiving and transferring the vehicle information. When the key device is a vehicle key, the vehicle information transfer from the first key device to the second key device can be realized, and the vehicle can be started by using the second key device when the first key device is abnormal.

More preferably, UWB positioning can be realized based on a UWB module, and communication is performed with a newly added blind node by using anchor nodes and bridge nodes of known positions arranged in advance, and positioning is performed by measuring transmission delay differences between different anchor nodes and bridge nodes and a mobile terminal by using a UWB positioning algorithm for calculation, often using a TDOA positioning algorithm, a TWR positioning algorithm, and the like. The key device is mainly used for positioning relative positions between the key device and the vehicle, and can determine whether the key device is in the vehicle or out of the vehicle and the distance between the key device and the vehicle when the key device is out of the vehicle, so that the relay prevention of the vehicle is realized.

The MCU can also be used for calculating signal information according to the received vehicle-mounted Bluetooth signal and confirming the position of the vehicle according to the signal information; the signal information includes at least one of signal amplitude, phase and time-of-flight difference. On the basis, the MCU can also be used for preventing the relay attack of the vehicle according to the signal information. Relay attacks are a common security threat faced in wireless communications. An attacker utilizes wireless equipment to amplify signals of two nodes in wireless communication, so that the communication distance between two communication parties is increased, the signals of the two communication parties are forwarded intact to deceive the communication nodes, and the two communication parties carry out accidental communication under the condition of no communication intention. If the novel key device is applied to a vehicle key, relay attack may disturb the position judgment of the key device by a system, and cause the potential safety hazard that a vehicle door is illegally unlocked or a vehicle is illegally started.

The key device described in the utility model can be a vehicle key or a Bluetooth terminal matched with a vehicle.

The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims

1. A key apparatus, characterized by comprising:

a power supply module;

2. The key device of claim 1, wherein the bluetooth module is further configured to confirm the location information of the vehicle with a third party bluetooth terminal based on a multi-node bluetooth principle or a single-node bluetooth principle.

3. The key device of claim 1, wherein the bluetooth module is further configured to receive vehicle information of the vehicle, and the MCU is further configured to migrate the vehicle information to transfer the usage right of the vehicle by the key device.

4. The key device of claim 1, wherein the UWB is further configured to confirm location information of the vehicle with a third party UWB.

5. The key device of claim 4, wherein the UWB module is further configured to calculate a signal amplitude, a phase from the received Bluetooth onboard signal, and the Bluetooth module is further configured to calculate a time-of-flight location, the signal amplitude, the phase and the time-of-flight location being used to confirm the relative position information of the key device and the corresponding vehicle.

6. The key device of claim 5, wherein the MCU is further configured to refuse to receive a control signal when the relative position information exceeds a preset distance.

7. The key apparatus according to claim 1, further comprising:

the MCU logic control circuit is connected with the MCU;

and the network communication circuit is connected with the Bluetooth module.

8. The key device according to claim 1, characterized in that the key device is a vehicle key.