Wireless charging support supporting UWB radar function

Abstract

The utility model provides a wireless charging support supporting a UWB radar function, and belongs to the technical field of UWB radars. The wireless charging support comprises a UWB radar function module, a control module, a communication module, an antenna module, a power supply module and N wireless charging modules, wherein the control module is respectively connected with the wireless charging module, the UWB radar function module and the communication module; the antenna module is connected with the wireless charging module, the UWB radar function module and the communication module. The power supply module is connected with the wireless charging module, the UWB radar function module, the control module, the communication module and the antenna module. According to the utility model, the UWB radar function is embedded into the wireless charger of the mobile phone or the wearable equipment, so that the equipment can detect important indexes such as heartbeat, respiration and the like of a nearby living body by virtue of the wireless charging bracket, and the detection data is transmitted to the mobile phone or the wearable equipment to be displayed, thereby providing a convenient health monitoring means for a user.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of UWB radar technology, especially relates to a wireless charging support that supports UWB radar function. BACKGROUND

[0002] With the popularity of smart phones, smart watches and other mobile devices, wireless chargers have been widely used due to their convenience. Users only need to place the device on the charging support, without the cumbersome plugging and unplugging of the charging line operation, which can realize charging. However, the current wireless charger has relatively single function, which is limited to power transmission.

[0003] The market of smart phone and smart watch wireless charging support shows a diversified development trend. In terms of function, not only has wireless charging function, but also combines features such as support fixing, multi-angle adjustment, etc. For example, the smart three-in-one wireless charger of Zitai can charge iPhone / Huawei, Apple Watch and AirPods at the same time. In terms of contact mode, some smart phone and smart watch wireless charging supports also support magnetic attraction function, for example: the mobile phone magnetic attraction charging module supports horizontal and vertical screen adsorption and angle adjustment. In terms of application occasions, there are desktop type, vehicle type and other styles to meet different scene needs, such as the vehicle-mounted carbon fiber mobile phone support of Molo, which adopts magnetic attraction design and is suitable for various vehicle models and mobile phone models. In addition, some products are also constantly innovating, such as the small magic clip intelligent full-automatic wireless fast charging mobile phone support with intelligent induction, voice control and other functions.

[0004] In the field of health monitoring, living body index detection, such as respiratory rate, respiratory depth, movement degree and heart rate, is crucial to understand the health status of human body. Although some high-end mobile phones and wearable devices are equipped with sensors to realize part of the living body index detection function, there are still a large number of devices without such function.

[0005] UWB radar sensing technology relies on ultra-wideband signals, supports vital sign monitoring, environmental perception and obstacle detection, and imaging functions, and exhibits unique advantages. In terms of vital sign monitoring, UWB radar supports respiratory monitoring, that is, it can detect the slight fluctuation of the chest or abdomen when the human body breathes, and then obtain respiratory-related information such as respiratory rate and respiratory depth, which can be used for sleep monitoring to help diagnose sleep disorders such as sleep apnea; it can also be used in medical monitoring scenarios to monitor the respiratory status of patients in real time. UWB radar also supports heartbeat monitoring, that is, it can monitor the heartbeat signal by detecting the weak vibration of the body surface caused by the beating of the heart, and obtain physiological parameters such as heart rate and heart rhythm, which has important applications in the fields of cardiology research, telemedicine, and sports health monitoring, such as real-time heart function monitoring during athlete training, and remote home monitoring of patients with cardiovascular disease. In terms of environmental perception and obstacle detection, UWB radar supports object detection, that is, the transmitted ultra-wideband pulse signal can penetrate certain obstacles, and based on the received reflected signal, it can determine whether there are objects around and the approximate position and distance of the objects, which can be used in smart home systems to automatically detect whether there are people in the room, and thus realize intelligent control functions such as automatic lighting. On the industrial automation production line, it can detect whether there are foreign objects or whether the position of the product is correct. UWB radar also supports motion detection, that is, based on the Doppler effect, when an object moves, the reflected signal received by the UWB radar will have a frequency shift, and by analyzing this frequency change, the motion state of the object can be detected, including the direction and speed of the motion. In the field of security monitoring, it can be used to detect intrusion behavior and issue an alarm when a person or object moves in the monitoring area; in intelligent transportation, it can detect the speed and direction of vehicles on the road. In terms of imaging function, UWB radar supports near-field imaging, that is, by scanning the target object from multiple angles and positions, and using the received reflected signal data, through signal processing and imaging algorithms, a two-dimensional or three-dimensional image of the target object can be generated. In the medical field, it can be used for imaging of human superficial tissues or organs to assist doctors in disease diagnosis; in the field of non-destructive testing, it can detect and image analyze the defects inside industrial parts. UWB radar supports through-wall imaging, that is, due to the strong penetration ability of UWB radar signals, it can penetrate obstacles such as walls under certain conditions and image the objects behind the obstacles. This function has potential application value in military reconnaissance, emergency rescue, and other scenarios, such as in earthquake disaster sites, it can help rescue personnel detect whether there are trapped persons under the ruins and their specific positions. Based on the characteristics of UWB radar technology itself, it has broad application prospects in the fields of intelligent transportation, medical health, and archaeological exploration, and can be used for vehicle collision avoidance, health monitoring, and cultural relic detection.Although it faces the challenges of complex environment multipath propagation interference and high cost, with the development of technology, UWB radar sensing technology will overcome difficulties, be widely used in more fields, accelerate the process of intelligentization, and become the key force of perception and innovation in various industries. Practical new type content

[0006] The utility model discloses a kind of wireless charging supports UWB radar function, including: UWB radar function module, control module, communication module, antenna module, power module and N wireless charging module, N is greater than or equal to 1;Wherein, the control module is connected wireless charging module, UWB radar function module and communication module respectively;The antenna module is connected wireless charging module, UWB radar function module and communication module respectively;The power module is connected wireless charging module, UWB radar function module, control module, communication module, antenna module respectively.

[0007] The utility model discloses a kind of wireless charging supports UWB radar function, including: UWB radar function module, control module, communication module, antenna module, power module and N wireless charging module, N is greater than or equal to 1;Wherein, the control module is connected wireless charging module, UWB radar function module and communication module respectively;The antenna module is connected wireless charging module, UWB radar function module and communication module respectively;The power module is connected wireless charging module, UWB radar function module, control module, communication module, antenna module respectively.

[0008] In some embodiments, further comprising:

[0009] The wireless charging module is used for wireless charging for mobile phone or smart wearable device placed on the wireless charging support;

[0010] The UWB radar function module is used for emitting and receiving ultra-wideband signal, and detecting nearby living body index data by processing and analyzing reflected signal;

[0011] The control module is used for controlling the charging process of wireless charging module, adjusting working parameter according to the charging state of mobile phone or smart wearable device;It is also used for controlling the start, stop and signal processing of UWB radar module, and transmitting living body index data detected by UWB radar module to communication module;

[0012] The communication module is used for sending living body index data received from control module to user's mobile phone or smart wearable device;

[0013] The antenna module is used for providing corresponding required frequency bands for the UWB radar function module and the communication module, and providing corresponding antenna functions for the wireless charging module.

[0014] The power supply module is used for supplying power for the remaining modules.

[0015] The utility model discloses a characteristic and beneficial effect:

[0016] 1) the utility model has organically combined UWB radar function and wireless charging function, has greatly expanded the application scene of wireless charging support.

[0017] 2) since adopting general wireless charging standard and common wireless communication technology, the wireless charging support of the utility model has extensive equipment compatibility.

[0018] 3) further, for the user of the smart phone and smart watch of wearing equipment without built-in living body index detection function, the utility model provides a low -cost, convenient health monitoring solution. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is the structure schematic diagram of the wireless charging support of the utility model that supports UWB radar function;

[0020] Figure 2 is the structure schematic diagram of the wireless charging support of the embodiment one of the utility model;

[0021] Figure 3 is the structure schematic diagram of the wireless charging support of the embodiment two of the utility model. DETAILED DESCRIPTION

[0022] The utility model discloses a kind of wireless charging support that supports UWB radar function, as follows further detailedly in conjunction with drawing and specific embodiment.

[0023] The utility model provides a kind of wireless charging support of supporting UWB radar function, structure as shown in Figure 1 As shown in figure, comprising: N wireless charging module (N is greater than or equal to 1 integer), 1 UWB radar function module, 1 control module, 1 communication module, 1 antenna module and 1 power module. Among them, control module is connected with each wireless charging module, UWB radar function module and communication module respectively;Antenna module is connected with each wireless charging module, UWB radar function module and communication module;Power module is connected with each wireless charging module, UWB radar function module, control module, communication module, antenna module respectively.

[0024] Among them:

[0025] Wireless charging module: using mature Qi wireless charging standard technology, can be compatible with the vast majority of supporting wireless charging function's mobile phone and wearable equipment on market. Its main function is to convert input electric energy into alternating magnetic field, when mobile phone or wearable equipment is placed on charging support, generates induction current in equipment interior by electromagnetic induction principle, to realize wireless charging. The module is connected with control module, accepts the instruction of control module, such as starting, stopping charging and the like. It needs to be explained that, at present, generally, personal need wireless charging equipment has multiple, such as: mobile phone, watch, bluetooth headset and the like, so the utility model can design multiple wireless charging modules (each wireless charging module corresponds a charging coil, carries out charging independently, and does not interfere with each other) to support this more common scene.

[0026] UWB radar function module: for transmitting and receiving ultra-wideband signal, detects nearby living body index data by processing and analyzing reflected signal. UWB radar module has high resolution, strong penetration and the like, can accurately capture the micro-motion information of living body in a certain range, such as heartbeat caused chest micro-vibration, chest fluctuation when breathing and the like. The frequency range of the ultra-wideband signal it transmits is carefully designed to ensure that the living body index is effectively detected while avoiding interference to other wireless equipment.

[0027] Control module: as the "brain" of entire wireless charging support, control module coordinates the work between each module. It controls the charging process of wireless charging module on one hand, adjusts output power and other working parameters according to the charging state of mobile phone or smart wearable equipment;On the other hand, control UWB radar module to start, stop and signal processing work. When detecting that there is equipment placed on charging support, or further meet certain conditions (such as equipment power is lower than set threshold and health monitoring function authorization is turned on), control module starts UWB radar module to begin living body index detection. At the same time, control module is also connected with communication module, transmits the living body index data detected by UWB radar module to communication module.

[0028] Communication Module: This module supports common wireless communication technologies such as Bluetooth or WiFi, used to send liveness indicator data received from the control module to the user's mobile phone or smart wearable device. In practical applications, it can automatically select the optimal communication method based on the connection status of the mobile phone or smart wearable device and the user's settings. For example, when the mobile phone or smart wearable device and the charging stand are within Bluetooth range and the Bluetooth connection is stable, Bluetooth is used first to transmit data to the mobile phone; if the Bluetooth of the mobile phone or smart wearable device is not enabled or the connection is unstable, but the charging stand and the mobile phone are in the same WiFi network environment, it will automatically switch to WiFi communication mode.

[0029] Antenna Module: This module primarily provides intelligent antenna adaptation for wireless communication modules or charging modules, catering to different frequency bands or charging modules. For UWB radar, this antenna module supports all frequency bands and bandwidths in the UWB standard. For wireless charging modules, this antenna module supports the antenna coils required for wireless charging coils in wearable devices such as smartphones, smartwatches, and smart Bluetooth headset charging cases. For communication modules, this antenna module supports unlicensed 2.4GHz or 5GHz frequency bands required for wireless communication technologies such as Bluetooth or WiFi.

[0030] Power module: The main function of this module is to provide power to other modules as needed.

[0031] Furthermore, the implementation methods of each module in this utility model are as follows:

[0032] 1. Implementation method of wireless charging module.

[0033] Wireless charging is primarily based on the principles of electromagnetic induction or magnetic resonance. Therefore, the charging stand of this invention can support both electromagnetic induction and magnetic resonance wireless charging. In electromagnetic induction wireless charging, the primary coil (transmitter) generates an alternating magnetic field after being connected to alternating current. The secondary coil (receiver) generates an induced electromotive force in this alternating magnetic field, thereby achieving energy transfer. In this charging stand, the primary coil (transmitter) is mounted on the surface of the stand. When a device supporting wireless charging approaches, its receiving coil couples with the primary coil for charging. Magnetic resonance wireless charging utilizes the resonant coupling of magnetic fields to transfer energy. At a certain frequency, the coils at the transmitter and receiver resonate, allowing for efficient energy transfer over a certain distance. This method can achieve a longer charging distance compared to electromagnetic induction. In this charging stand, there are no requirements regarding the depth of the transmitter coil inside the stand as indicated on the stand.

[0034] 2. Implementation method of UWB radar functional module.

[0035] The UWB (Ultra-Wideband) radar function module transmits ultra-short pulse signals (nanosecond level or even shorter), when the UWB signal encounters objects or living things in the vehicle, part of the signal will be reflected back to form a return signal. The receiving antenna receives these return signals and converts them into electrical signals. Since the return signal is very weak and may be disturbed by noise, it needs to be amplified, filtered, sampled, etc. Then, through advanced signal processing algorithms such as channel impulse response estimation (CIR), matched filtering, pulse compression, wavelet transform, etc., the processed return signal is analyzed to extract the characteristic information of the target object, such as: breathing frequency, heartbeat frequency, etc.

[0036] 3. Control module implementation.

[0037] The control module is implemented by a microcontroller (MCU). The MCU receives signals from other modules (such as: UWB radar module, communication module, etc.), processes them according to the pre-set algorithm and logic, and then controls the wireless charging module, power module, etc. For example, when the UWB radar detects that the device is placed in the appropriate position on the charging support, the control module starts the wireless charging module to start charging, and can control the stop of charging and other operations according to the charging state of the device (such as whether it is full).

[0038] 4. Communication module implementation.

[0039] The communication module can use wireless communication technologies such as Bluetooth, Wi-Fi or Zigbee.

[0040] Taking Bluetooth as an example, it communicates at short distances through radio frequency signals in the 2.4 GHz frequency band. The communication module is used for data interaction with external devices (such as mobile phones, etc.), for example, it can send the status of the charging support (such as whether charging has started, charging power, etc.) to the mobile phone application, and can also receive instructions from the mobile phone (such as setting the charging mode, etc.).

[0041] 5. Antenna module implementation.

[0042] The antenna module is used to provide the corresponding required different frequency bands for the UWB radar function module and the communication module, and to provide the intelligent adaptation of the antenna function for the wireless charging module. For the wireless charging module, the transmitting and receiving coils are needed to realize the wireless transmission of electric energy, which is also a kind of antenna form. For the UWB radar function module, an antenna working in the ultra-wideband frequency band is needed to transmit and receive ultra-short pulse signals. For the communication module (such as Bluetooth), an antenna working in the 2.4 GHz frequency band is needed for wireless communication. The design of the antenna needs to be customized according to the working frequency, bandwidth, gain, etc. of different modules.

[0043] 6. Power module implementation.

[0044] The power module is mainly responsible for converting the input alternating current (such as mains 220V) into direct current required by each module. It usually includes power transformer, rectifier circuit, filter circuit and voltage stabilizing circuit and other parts. For example, first of all, through the power transformer, the mains is reduced to a suitable voltage value, and then through the rectifier circuit, the alternating current is converted into direct current, the filter circuit removes the ripple in the direct current, and the voltage stabilizing circuit ensures the stability of the output voltage.

[0045] Further, the working principle of the wireless charging support of the UWB radar function is as follows:

[0046] When the user places the wearable device such as smart phone or smart watch on the wireless charging support, the wireless charging module first detects the access of the device and sends a signal to the control module. The control module determines whether to start the UWB radar module according to the state of the device and the pre-set health monitoring function of the user. If the starting condition is met, the UWB radar module starts to emit ultra-wideband signals. These signals will be reflected when encountering nearby living bodies, and the UWB radar module receives the reflected signals and analyzes the signals through the built-in signal processing algorithm. For example, by analyzing the frequency change, phase change and other characteristics of the reflected signals, the micro-motion information such as heartbeat and respiration of the living body is extracted, and then the respiratory rate, respiratory depth, movement degree and heart rate and other indicators are calculated. The living body index data calculated is then transmitted to the control module, and the control module transmits the data to the communication module. The communication module selects the appropriate wireless communication technology according to the current connection condition, and transmits the data to the device such as smart phone or smart watch. On the wearable device such as smart phone or smart watch, the corresponding application program (such as health monitoring APP) receives the data, analyzes and processes the data, and displays the data in the form of intuitive charts, numbers and other forms on the screen for the user to view the health index information of himself.

[0047] The wireless charging support of the UWB radar function proposed by the utility model will be further described in detail as follows in combination with specific embodiments:

[0048] Embodiment one:

[0049] The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure as shown in Figure 2 The wireless charging support of the UWB radar function described in this embodiment has the structure

[0050] Wherein:

[0051] Wireless charging module: This embodiment selects a wireless charging chip that meets the latest wireless charging standards, such as a TI wireless charging chip that meets the Qi standard developed by the Wireless Power Consortium, which has high power conversion efficiency and stable performance. The wireless charging coil and the chip are reasonably laid out and connected, and installed in the charging area of the charging support, ensuring that when a mobile phone or wearable device is placed in the area, it can effectively induce and charge.

[0052] UWB radar module: This embodiment uses a specially designed UWB radar sensor chip, such as the Unicore UIW7710 chip. According to the technical specifications of the chip, a suitable antenna system is designed to ensure the effective transmission and reception of ultra-wideband signals. The radar module is installed in a suitable position on the charging support, so that it can cover the effective detection area around the placed device.

[0053] Control module: This embodiment selects a high-performance microcontroller, such as an STM32 series microcontroller, or an embedded ARM M0 processor. It is connected with the wireless charging module, UWB radar module through the circuit, realizes the data interaction and the control signal transmission. Write the corresponding control program on the microcontroller to realize the coordination management of each module.

[0054] Communication module: This embodiment supports Bluetooth short-range communication function, can choose Bluetooth low power consumption (BLE) module, such as Nordic Bluetooth module. The communication module is connected with the control module, and the corresponding communication protocol is configured to ensure stable data transmission with the smart phone.

[0055] Antenna module: In this embodiment, this module mainly provides the corresponding required different frequency bands for UWB radar function module and communication module, and provides intelligent adaptive antenna function for wireless charging module. For UWB radar, this antenna module supports all frequency bands and bandwidths in the UWB standard. For the wireless charging module, the antenna module supports the required antenna coil corresponding to the wireless charging coil of the smart phone. For the communication module, the antenna module supports the required frequency bands such as 2.4GHz or 5GHz for Bluetooth wireless communication technology.

[0056] Power module: The main function of this module in this embodiment is to supply power to other modules as needed.

[0057] The specific implementation method of each module in this embodiment is as follows:

[0058] 1. Implementation method of wireless charging module.

[0059] The wireless charging in this embodiment is mainly based on the principle of electromagnetic induction, so the charging support of this embodiment supports electromagnetic induction type wireless charging. For electromagnetic induction type wireless charging, the primary coil (transmit end) generates an alternating magnetic field after being connected to an alternating current, and the secondary coil (receive end) generates an induced electromotive force in the alternating magnetic field, thereby realizing power transmission. In the charging support of this embodiment, the primary coil (transmit end) is installed on the surface of the support, and when the device supporting wireless charging is close, the receiving coil in the device is coupled for charging.

[0060] The transmit coil of the charging support of this embodiment uses a bq500510A wireless charging transmit controller from TI (Texas Instruments), which supports the Qi standard, has a working frequency of 110-205 kHz, and an output power of up to 5W-15W (under different configurations). The coil inductance value is generally between several microhenries and several tens of microhenries, and the typical value is 10-20μH.

[0061] 2. Implementation of UWB radar function module.

[0062] The UWB (Ultra-Wideband) radar function module transmits ultra-short pulse signals (nanosecond level or even shorter), and when the UWB signal encounters objects or living things in the vehicle, part of the signal will be reflected back to form a return signal. The receiving antenna receives these return signals and converts them into electrical signals. Since the return signal is very weak and may be disturbed by noise, it needs to be amplified, filtered, sampled, and other processing. Then, through advanced signal processing algorithms such as channel impulse response estimation (CIR), matched filtering, pulse compression, wavelet transform, etc., the processed return signal is analyzed to extract the characteristic information of the target object, such as: breathing frequency, heartbeat frequency, etc.

[0063] The UWB radar sensor chip of the charging support of this embodiment uses the Purple Ray UIW7710 chip, which supports radar sensing function. Its radar function works in the frequency band of 6GHz to 9GHz, with a bandwidth of 500MHz, a ranging accuracy of less than 10 centimeters, a vertical direction FOV greater than or equal to 80±10 degrees, a horizontal direction FOV greater than or equal to 110±10 degrees, a radar overall detection distance greater than or equal to 6 meters, a radar distance resolution of the blind area less than 15cm, and a single-channel 1kHz radar data refresh frequency.

[0064] 3. Implementation of control module.

[0065] The control module of the embodiment is implemented by a microcontroller (MCU). The MCU receives signals from other modules (such as the UWB radar module, the communication module, etc.), processes them according to preset algorithms and logic, and then controls the wireless charging module, the power module, etc. For example, when the UWB radar detects that the device is placed in a suitable position on the charging support, the control module starts the wireless charging module to begin charging, and can control the stopping of charging and other operations according to the charging status of the device (such as whether it is fully charged).

[0066] The control module of the charging support of the embodiment adopts an STM32F103C8T6, which is a commonly used microcontroller. It is based on an ARM Cortex-M3 core, with a maximum working frequency of 72MHz, and has a rich set of peripheral interfaces, including an SPI interface (for communication with the wireless charging module, the communication module, etc.), an ADC interface (which can be used to detect the power supply voltage, etc.), etc. It has 64KB of flash memory and 20KB of SRAM, which can meet the storage and running needs of the control algorithm used by the charging support.

[0067] 4. Implementation of the communication module.

[0068] The communication module in the embodiment uses Bluetooth wireless communication technology.

[0069] For the Bluetooth communication module, it communicates at a short distance through radio frequency signals in the 2.4GHz frequency band. The Bluetooth communication module is used to interact with external devices (such as mobile phones, etc.) to exchange data, for example, it can send the status of the charging support (such as whether charging has started, charging power, etc.) to the mobile phone application, or it can receive instructions from the mobile phone (such as setting the charging mode, etc.).

[0070] The Bluetooth module of the charging support of the embodiment uses a CC2541 chip, which complies with the Bluetooth 4.0 standard, works in the 2.4GHz frequency band, and has a transmission power range of -23dBm to 0dBm, with a receiving sensitivity of -94dBm. Its maximum data transmission rate is 1Mbps, and it has multiple interfaces such as SPI and UART, making it easy to connect to the control module.

[0071] 5. Implementation of the antenna module.

[0072] The antenna module of the embodiment needs to support signals in three frequency bands, namely: 110-205kHz for the wireless charging module, 6-9GHz for the UWB radar function module, and 2.4GHz for the Bluetooth module. The antenna module needs to be customized according to the required supported frequency bands.

[0073] The charging support of the embodiment uses a customized antenna module that supports 110-205kHz, 6-9GHz, and 2.4GHz.

[0074] 6. Power module implementation.

[0075] In this embodiment, the power module is responsible for converting the input AC power (such as mains 220V) into the required DC power for each module. It includes power transformer, rectifier circuit, filter circuit and voltage stabilizing circuit, etc. First, the mains is stepped down to the appropriate voltage value through the power transformer, then the AC power is converted to DC power through the rectifier circuit, the filter circuit removes the ripple in the DC power, and the voltage stabilizing circuit ensures the stability of the output voltage.

[0076] The power transformer of the charging support in this embodiment needs to be selected according to the output voltage and power requirements, i.e. the output voltage is 5V and the power is about 10W, the primary input is 220V and the secondary output is about 9V, a small power frequency transformer of EI-35 type is selected. The rectifier diode of the charging support in this embodiment uses 1N4007, which has a maximum reverse voltage of 1000V and a maximum forward current of 1A. The filter capacitor of the charging support in this embodiment uses an electrolytic capacitor: 1000μF / 16V capacitor, and the voltage stabilizing chip of the charging support in this embodiment uses LM7805, which outputs a stable 5V DC voltage.

[0077] Assemble each module according to the designed circuit diagram, install it inside the shell of the charging support, ensure the stable and reliable connection between the modules, and consider the heat dissipation and other issues to avoid overheating and affecting performance due to long-term work.

[0078] Among them, the control module of the wireless charging support device supporting UWB radar function in this embodiment needs to develop and debug related software, and the application program needs to be developed on the smart phone or smart watch and other wearable equipment, as follows:

[0079] For the control module of the wireless charging support device supporting UWB radar function, C language or other suitable microcontroller programming language is needed to write the program of the control module. The program mainly includes the charging control logic of the wireless charging module, such as automatically adjusting the charging power according to the device power; the start, stop control and data acquisition logic of the UWB radar module, for example: setting the signal transmission frequency, sampling rate and other parameters of the radar module, and preliminarily processing the collected data; the control logic of the communication module, including data packaging, sending format setting and communication mode selection, etc.

[0080] For smart phones, it needs to develop related applications. Develop health monitoring applications for different operating systems (such as iOS and Android). The main functions of the application include establishing a communication connection with the wireless charging support, receiving vital index data, data analysis and processing, and interface design. For example, in the development of iOS application, Swift language is used to realize the connection communication with Bluetooth module through Core Bluetooth framework; in the development of Android application, Java language is used to realize the connection function of Bluetooth wireless communication technology by means of Android Bluetooth API, and the corresponding chart library is used to draw the chart display interface of health index.

[0081] After the completion of the function module assembly and the development of related software and applications, the debugging work of the system is carried out. First, the function test of each module is carried out separately to ensure that the wireless charging module can charge normally, the UWB radar module can accurately detect the vital index, and the communication module can stably transmit data. Then the whole system is debugged, the smart phone is placed on the charging support, the running situation of the whole system is observed, whether there are problems such as data loss, communication interruption, detection error is too large and so on is checked, and the problems found are checked and solved one by one, until the UWB radar function supported wireless charging support system can stably and reliably run.

[0082] Further, the beneficial effects of the first embodiment are as follows:

[0083] 1. Function expansion.

[0084] The utility model combines UWB radar function and wireless charging function organically, greatly expands the application field of wireless charging support. The traditional wireless charging support can only provide charging service, but the wireless charging support of the utility model can not only charge the smart phone, but also can detect the health index of the nearby living body at the same time, which provides a new health monitoring method for the user, without wearing special health monitoring equipment, convenient and fast.

[0085] 2. Health monitoring popularization.

[0086] For those smart phone users who do not have the built-in vital index detection function, the utility model provides a low-cost and convenient health monitoring solution. With the help of UWB radar function on the wireless charging support, these devices can detect the important health index of the user, which helps to improve the user's attention to their own health condition and promote the popularization of health monitoring.

[0087] Embodiment two:

[0088] The wireless charging support UWB radar function support of the present embodiment, structure as Figure 3 The wireless charging support UWB radar function support of the present embodiment, structure as

[0089] Among them:

[0090] Wireless charging module: the embodiment selects two wireless charging chips that meet the latest wireless charging standards, such as TI wireless charging chips that meet the Qi standard formulated by the Wireless Power Consortium, which have high power conversion efficiency and stable performance. The wireless charging coils for charging smart phones and smart watches are reasonably laid out and connected with the corresponding chips of smart phones and smart watches, and are installed in the corresponding charging areas of smart phones and smart watches on the charging support, to ensure that the smart phones and smart watches can be effectively inducted and charged when placed in the area.

[0091] UWB radar module: the embodiment uses a specially designed UWB radar sensor chip, such as the ultra-wideband radar chip of Newray. According to the technical specifications of the chip, a suitable antenna system is designed to ensure the effective transmission and reception of ultra-wideband signals. The radar module is installed at a suitable position on the charging support so that it can cover the effective detection area around the placed device.

[0092] Control module: the embodiment selects a high-performance microcontroller, such as an STM32 series microcontroller or an embedded ARM M1 processor. It is connected with the wireless charging module and the UWB radar module through the circuit to realize data interaction and control signal transmission. The corresponding control program is written on the microcontroller to realize the coordination and management of each module.

[0093] Communication module: the embodiment supports WiFi short-range communication function, and can select WiFi modules such as ESP8266 or ESP32. The communication module is connected with the control module and configured with corresponding communication protocol to ensure stable data transmission with mobile phones or wearable devices.

[0094] Antenna module: In this embodiment, this module needs to provide the antenna function of the smart adaptation of different frequency bands or different charging modules required by the WiFi wireless communication module, the UWB radar module and the two charging modules for charging the smart phone and the smart watch. For UWB radar, the antenna module supports the frequency band CH11 and the large bandwidth of 1.3 GHz in the UWB standard. For the wireless charging module, the two antenna modules support the corresponding required antenna coils of the smart phone and the smart watch. For the communication module, the antenna module supports the required unlicensed frequency bands such as 2.4 GHz or 5 GHz of WiFi wireless communication technology.

[0095] Power module: In this embodiment, the main function of this module is to supply power to other modules as required.

[0096] The specific implementation of each module in this embodiment is as follows:

[0097] 1. Wireless charging module implementation.

[0098] In this embodiment, wireless charging is mainly based on the principle of magnetic resonance, so the charging support of this embodiment supports magnetic resonance type wireless charging. For magnetic resonance type wireless charging, it uses the resonance coupling of the magnetic field to transmit energy. At a certain frequency, the coils of the transmitting end and the receiving end resonate, and energy can be transmitted efficiently within a certain distance. This method can achieve a longer charging distance compared to electromagnetic induction type. In this charging support, the depth of the installation position of the transmitting end coil in the support is not required.

[0099] The wireless charging transmission controller of the charging support of this embodiment adopts the ground core gravity GWW6117, which supports the Qi standard, supports the WPC 1.3EPP specification, and the output power reaches 15W. It supports QC2.0 / PD3.1 / SCP / AFC / UFCS and other fast charging protocols. It supports running in the input voltage range of 3.3V-14V, and has two I 2 C / UART ports.

[0100] 2. UWB radar function module implementation.

[0101] The UWB (Ultra-Wideband) radar function module transmits ultra-short pulse signals (nanosecond level or even shorter), when the UWB signal encounters objects or living things in the vehicle, part of the signal will be reflected back, forming a return signal. The receiving antenna receives these return signals and converts them into electrical signals. Because the return signal is very weak and may be disturbed by noise, it needs to be amplified, filtered, sampled and other processing. Then, through advanced signal processing algorithms such as channel impulse response estimation (CIR), matched filtering, pulse compression, wavelet transform, etc., the processed return signal is analyzed to extract the feature information of the target object, such as: breathing frequency, heartbeat frequency, etc.

[0102] The charging support of the embodiment adopts NXP Semiconductor NCJ29D6B UWB IC chip, which supports radar sensing function, uses NXP radar sensitivity improvement technology, and realizes first-class full-duplex UWB radar performance. It works in the frequency band of 6.0-8.5 GHz, with a bandwidth of 500 MHz, and the positioning accuracy reaches within 10 centimeters. In the vertical direction, the FOV is greater than or equal to 80±3 degrees, and in the horizontal direction, the FOV is greater than or equal to 110±3 degrees. The overall detection distance of the radar is greater than or equal to 10 meters. The radar distance resolution of the blind area is less than 15 cm, and the single-channel radar data refresh frequency is greater than 10 Hz.

[0103] 3. Control module implementation.

[0104] The control module of the embodiment is implemented by using a microcontroller (MCU). The MCU receives signals from other modules (such as the UWB radar module, the communication module, etc.), processes them according to the preset algorithm and logic, and then controls the wireless charging module, the power module, etc. For example, when the UWB radar detects that the device is placed in the appropriate position on the charging support, the control module starts the wireless charging module to begin charging, and can control the stop of charging and other operations according to the charging state of the device (such as whether it is fully charged).

[0105] The control module of the charging support of the embodiment adopts STM32F103C8T6, which is a commonly used microcontroller. It is based on ARM Cortex-M3 core, with a maximum working frequency of 72MHz, and has rich peripheral interfaces, including SPI interface (used for communication with wireless charging module, communication module, etc.), ADC interface (which can be used to detect power voltage, etc.), etc. It has 64KB of flash memory and 20KB of SRAM, which can meet the storage and running needs of the control algorithm used in the charging support.

[0106] 4. Communication module implementation.

[0107] In the embodiment, the communication module adopts Wi-Fi wireless communication technology.

[0108] For the WiFi communication module in the embodiment, Broadcom's BCM4390 chip is adopted, which supports dual radio, supports simultaneous 2-stream 2.4GHz and 2-stream 5 / 6GHz Wi-Fi 7 operation; 4096-QAM modulation and 160MHz channel bandwidth, PHY rate of 3.2Gbps; client multi-link operation (MLO) and SpeedBooster TM ; support IEEE and WFA Wi-Fi 7 standards.

[0109] 5. Antenna module implementation.

[0110] The antenna module of the charging support of the embodiment needs to support the frequency bands required by the wireless charging module, the UWB radar function module and the WiFi communication module in the embodiment, and the antenna module needs to be customized according to the required supported frequency bands.

[0111] The antenna module of the charging support of the embodiment supports a customized antenna module supporting 6.0-8.5 GHz and 2.4 GHz and 5 / 6 GHz.

[0112] 6. Power module implementation.

[0113] The power module of the embodiment is mainly responsible for converting the input alternating current (such as mains 220V) into direct current required by each module. It includes power transformer, rectifier circuit, filter circuit and voltage stabilizing circuit and other parts. First, the mains is stepped down to a suitable voltage value through the power transformer, and then the alternating current is converted into direct current through the rectifier circuit, the filter circuit removes the ripple in the direct current, and the voltage stabilizing circuit ensures the stability of the output voltage.

[0114] The power transformer of the charging support of the embodiment needs to be selected according to the output voltage and power requirements, that is, the output voltage is 5V, the power is about 10W, the primary input is 220V, and the secondary output is about 9V. Small power transformer: EI-35 type transformer. The rectifier diode of the charging support of the embodiment adopts 1N4007, whose maximum reverse voltage is 1000V and maximum forward current is 1A. The filter capacitor of the charging support of the embodiment adopts electrolytic capacitor: 1000μF / 16V capacitor. The voltage stabilizing chip of the charging support of the embodiment adopts LM7805, which outputs stable 5V direct current voltage.

[0115] Assemble each module according to the designed circuit diagram, install it inside the shell of the charging support, ensure the stable and reliable connection between the modules, and at the same time consider the heat dissipation and other problems, so as to avoid the performance affected by overheating due to long time work.

[0116] Among them, the control module of the wireless charging support supporting UWB radar function of the embodiment needs to develop and debug related software, and the application program needs to be developed on the smart phone or smart watch and other wearable equipment, as follows:

[0117] For the control module of the wireless charging support UWB radar function support, C language or other suitable microcontroller programming language is needed to write the program of the control module. The program mainly includes the charging control logic of the wireless charging module, such as automatically adjusting the charging power according to the device power; the start, stop control and data acquisition logic of the UWB radar module, for example: setting the signal transmission frequency, sampling rate and other parameters of the radar module, and preliminarily processing the collected data; the control logic of the communication module, including data packaging, sending format setting and communication mode selection, etc.

[0118] For smart phones or smart watches and other wearable equipment, relevant application development is needed. Corresponding health monitoring applications are developed for different operating systems (such as iOS and Android). The main functions of the application include establishing communication connection with the wireless charging support, receiving vital index data, data analysis and processing, and interface display design. For example, in the development of the iOS application, Swift language is used to realize the connection communication with the Bluetooth module through the Core Bluetooth framework; in the development of the Android application, Java language is used to realize the connection function of the WiFi wireless communication technology through the Android Bluetooth API, and the corresponding chart library is used to draw the chart display interface of the health index.

[0119] After the assembly of the function modules and the development of the related software and applications, the debugging work of the system is carried out. First, the function test of each module is carried out separately to ensure that the wireless charging module can charge normally, the UWB radar module can accurately detect the vital index, and the communication module can stably transmit data. Then the whole system is debugged, the phone or wearable device is placed on the charging support, the running situation of the whole system is observed, whether there are problems such as data loss, communication interruption, and large detection error is checked, and the problems found are checked and solved one by one, until the whole wireless charging support UWB radar function support system can stably and reliably run.

[0120] Further, the beneficial effects of the second embodiment are as follows:

[0121] 1. Function expansion.

[0122] The UWB radar function and the wireless charging function are organically combined in the utility model, which greatly expands the application field of the wireless charging support. The traditional wireless charging support can only provide charging service, while the support of the second embodiment can not only charge smart phones and smart watches, but also can simultaneously realize the detection of the health index of the nearby living body, providing a new health monitoring method for users, without the need to wear special health monitoring equipment, which is convenient and fast.

[0123] 2. Device compatibility.

[0124] Due to the adoption of a common wireless charging standard and common WiFi wireless communication technology, the wireless charging support of the utility model has wide device compatibility. Whether it is a smart phone of different brands and models, or various smart watches, as long as it supports wireless charging function, it can realize living body index detection while charging on the support. This makes the utility model be able to meet the needs of the majority of users, and has high market promotion value.

[0125] 3. Health monitoring popularization.

[0126] For those smart phone and smart watch users who do not have built-in living body index detection function, the utility model provides a low-cost and convenient health monitoring solution. With the help of the UWB radar function on the wireless charging support, these devices can realize the detection of important health indicators of the user, which helps to improve the user's attention to their own health status and promote the popularization of health monitoring.

[0127] In the above embodiment one and embodiment two, the charging object of the wireless charging module is not limited to / limited to smart phones, smart watches, but also supports other non-smart phones, smart watches and smart electronic devices such as smart Bluetooth charging warehouses; In addition, the communication technology with smart phones, smart watches and other wearable devices is not limited to / limited to Bluetooth and WiFi technology, and other existing wireless short-range communication technologies can be applied to the utility model, such as Zigbee, star flash communication and other short-range communication technologies.

[0128] In summary, the wireless charging support of the utility model supporting UWB radar function fills the gap of existing wireless chargers in living body index detection function through innovative design concept and technical scheme, provides users with more convenient and multifunctional use experience, and has broad application prospect and market potential in the field of intelligent health monitoring.

Claims

1. A wireless charging stand supporting UWB radar functionality, characterized in that, Comprise: UWB radar function module, control module, communication module, antenna module, power module and N wireless charging module, N is greater than or equal to 1;Wherein, the control module is connected respectively wireless charging module, UWB radar function module and communication module;The antenna module is connected respectively wireless charging module, UWB radar function module and communication module;The power module is connected respectively wireless charging module, UWB radar function module, control module, communication module, antenna module.

2. The wireless charging cradle of claim 1, wherein, Also include: The wireless charging module is used for wireless charging for mobile phones or smart wearable devices placed on the wireless charging support; The UWB radar function module is used for transmitting and receiving ultra-wideband signals, and detecting nearby living body index data by processing and analyzing reflected signals; The control module is used for controlling the charging process of the wireless charging module, adjusting the working parameters according to the charging state of the mobile phone or smart wearable device;It is also used for controlling the start, stop and signal processing of the UWB radar module, and transmitting the living body index data detected by the UWB radar module to the communication module; The communication module is used for sending the living body index data received from the control module to the user's mobile phone or smart wearable device; The antenna module is used for providing the required frequency band for the UWB radar function module and the communication module, and providing the corresponding antenna function for the wireless charging module; The power module is used for power supply for the rest of the modules.

Images