CN113992222B - Wake-up receiver, system, method and equipment applied to BLE - Google Patents
Wake-up receiver, system, method and equipment applied to BLE Download PDFInfo
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- H04B1/06—Receivers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
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- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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Abstract
The application discloses a wake-up receiver, a system, a method and equipment applied to BLE, and belongs to the technical field of wireless communication. The apparatus of the present application mainly comprises: the baseband processor is arranged in the signal driving device and used for receiving the broadcast channel message sent by the BLE mobile device, and the baseband processor comprises a wave detector and a signal processing unit, wherein the wave detector is used for converting the broadcast channel message into a corresponding detected direct current signal; the voltage comparator is used for comparing the detection direct current signal with a preset reference voltage in the awakening receiver to obtain a comparison voltage signal; and the wake-up modem is used for outputting a reset signal when the comparison voltage signal accords with the wake-up condition of a preset wake-up mode, and the reset signal wakes up the wake-up receiver. According to the method, a reverse channel communication concept is used, the transmitter according with the BLE standard generates the awakening signal and transmits the awakening signal to the receiver, the purpose of awakening the receiver is achieved with low power consumption, and the service life of the awakening receiver is prolonged.
Description
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a wake-up receiver, a system, a method, and a device for BLE.
Background
With the development of technology, battery-less operation and ultra low power consumption (ULP) become two key technologies in the field of wireless communication technology. Bluetooth is widely used because it can directly provide the lowest average power for the mobile device communicating radio. However, Bluetooth Low Energy (BLE) requires continuous signal transmission to connect with the mobile device, and the time interval of the signal transmission is often sub-1s (less than 1 second) because of the need to minimize delay, but such continuous signal transmission results in the minimum average power being around 10 μ W, which results in the reduced service life of the button battery of the device.
In the prior art, the minimum average power of the mobile device is reduced by having the mobile device initiate a connection to reverse the signal network using a wake-up receiver, but this approach requires a custom wake-up signal and the wake-up signal cannot be generated by the radio.
Disclosure of Invention
Aiming at the problems that the prior art needs to define a wake-up signal and the wake-up signal cannot be generated by a radio, the invention mainly provides a wake-up receiver, a system, a method and equipment applied to BLE.
In order to achieve the above object, the present application adopts a technical solution that: there is provided a wake-up receiver applied to BLE, comprising: the baseband processor is arranged in the signal driving device and used for receiving the broadcast channel message sent by the BLE mobile device, and the baseband processor comprises a wave detector and a signal processing unit, wherein the wave detector is used for converting the broadcast channel message into a corresponding detected direct current signal; the voltage comparator is connected with the detector and used for comparing the detected direct-current signal with a preset reference voltage in the awakening receiver to obtain a comparison voltage signal; and the wake-up modem is connected with the voltage comparator and used for outputting a reset signal when the comparison voltage signal accords with the wake-up condition of a preset wake-up mode, and the reset signal wakes up the wake-up receiver.
Another technical scheme adopted by the application is as follows: provided is a wake-up receiving system applied to BLE, which comprises: a BLE mobile device that, upon waking up, transmits a broadcast channel message; the signal driving device comprises a baseband processor, the baseband processor receives the broadcast channel message sent by the BLE device and performs system awakening, wherein the baseband processor comprises a detector which converts the broadcast channel message into a corresponding detection direct current signal; a voltage comparator which compares the detection direct current signal with a reference voltage preset in the wake-up receiver to obtain a comparison voltage signal; and the wake-up modem outputs a reset signal to wake up the wake-up receiver when the comparison voltage signal meets the wake-up condition of the preset wake-up mode.
Another technical scheme adopted by the application is as follows: provided is a wake-up receiver wake-up method applied to BLE, which comprises the following steps: converting the received broadcast channel message into a corresponding detection direct current signal through a detector; comparing the detection direct current signal with a preset reference voltage in a wake-up receiver through a voltage comparator to obtain a comparison voltage signal; and comparing the comparison voltage signal with a preset wake-up condition of a wake-up mode through a wake-up modem, outputting a reset signal when the comparison voltage signal meets the wake-up condition, and waking up the wake-up receiver.
Another technical scheme adopted by the application is as follows: there is provided a computer device characterized by comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores computer instructions executable by the at least one processor, and the at least one processor operates the computer instructions to perform the wake-up receiver wake-up method applied to BLE according to scheme three.
The technical scheme of the application can reach the beneficial effects that: the application designs a wake-up receiver, a system, a method and equipment applied to BLE. The wake-up receiver applied to the BLE generates the wake-up signal, namely the broadcast channel message, through the concept of using a reverse channel to communicate, and then transmits the wake-up signal to the receiver through the transmitter according with the BLE standard, so that the purpose of waking up the receiver is achieved with smaller power consumption, and the service life of the wake-up receiver is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Figure 1 is a schematic diagram of an embodiment of a wake-up receiver applied to BLE according to the present application;
figure 2 is a schematic diagram of a specific example of a mobile device communicating with a driving signal device in a wake-up receiver applied to BLE according to the present application;
figure 3 is a schematic diagram of a specific example of the internal structure of a wake-up receiver applied to BLE according to the present application.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
The following detailed description of the preferred embodiments of the present application, taken in conjunction with the accompanying drawings, will provide those skilled in the art with a better understanding of the advantages and features of the present application, and will make the scope of the present application more clear and definite.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
With the development of technology, battery-less operation and ultra low power consumption (ULP) become two key technologies in the field of wireless communication technology. Bluetooth is widely used because it can directly provide the lowest average power for the mobile device communicating radio. However, Bluetooth Low Energy (BLE) requires continuous signal transmission to connect with the mobile device, and the time interval of the signal transmission is often sub-1s (less than 1 second) because of the need to minimize delay, but such continuous signal transmission results in the minimum average power being around 10 μ W, which results in the reduced service life of the button battery of the device.
In the prior art, the minimum average power of the mobile device is reduced by having the mobile device initiate a connection to reverse the signal network using a wake-up receiver, but this approach requires a custom wake-up signal and the wake-up signal cannot be generated by the radio.
The invention conception of the application is as follows: the method comprises the steps that a high-integration awakening receiver chip is utilized, an ultra-low-power-consumption awakening machine framework applied to BLE is provided, a reverse channel communication mode that the awakening signal is not required to be defined by the awakening receiver is used, the awakening signal is generated by a transmitter conforming to the BLE standard and then transmitted to the receiver, the purpose of awakening the receiver is achieved with smaller power consumption, the service life of the awakening receiver is prolonged, and the awakening machine framework provided by the application is provided with a multifunctional integrated power management module to provide corresponding power supply for the awakening machine framework so as to save the power consumption of the awakening machine framework; and the awakening machine framework of the application can realize programming through the SPI interface, and timely learn or adjust the state of the chip, thereby avoiding influencing the output of the reset signal and further avoiding awakening the awakening receiver.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.
Figure 1 shows one embodiment of a wake-up receiver applied to BLE according to the present application.
In the embodiment shown in fig. 1, the wake-up receiver applied to BLE mainly includes: a baseband processor, disposed inside the signal driving device, for receiving a broadcast channel message sent by a BLE mobile device, wherein the baseband processor includes:
a detector of the module 101 for converting the broadcast channel message into a corresponding detected direct current signal;
a voltage comparator of the module 102, connected to the detector, for comparing the detected dc signal with a reference voltage preset in the wake-up receiver to obtain a comparison voltage signal; and
and the wake-up modem of the module 103 is connected with the voltage comparator, and is configured to output a reset signal when the comparison voltage signal meets a wake-up condition of a preset wake-up mode, where the reset signal wakes up the wake-up receiver.
In this embodiment, as shown in fig. 2, when radio connection is performed between the BLE mobile device and the signal driving device through bluetooth, the BLE mobile device sends a bluetooth broadcast channel message, i.e. a wake-up signal, to the wake-up receiver, the baseband processor in the signal driving device receives the broadcast channel message sent by the BLE mobile device, demodulates the broadcast channel message through the detector, converts the message into a corresponding detection dc signal, and inputs the detection dc signal into the voltage comparator, the voltage comparator compares the detection dc signal according to a preset reference voltage, the voltage comparator outputs a set of corresponding high and low levels, i.e. a comparison voltage signal, the wake-up modem compares the comparison voltage signal with a wake-up condition of a preset wake-up mode according to the comparison voltage signal, the signal driving device transmits a pairing signal to the mobile device to be connected and paired with the mobile device, so that Bluetooth matching and other mutual communication can be carried out between the BLE mobile device and the signal driving device. The wake-up receiver applied to the BLE realizes radio communication between the BLE mobile device and the signal driving device in an ultra-low power consumption mode through a reverse channel communication mode of the wake-up receiver.
Alternatively, the mobile device includes, but is not limited to, a key, a watch.
In an optional embodiment of the present application, the wake-up receiver applied to BLE of the present application includes three different wake-up modes, and when the preset wake-up mode is wake-up mode one, by comparing the voltage of the comparison voltage signal with a preset voltage threshold in the wake-up mode one, when the voltage of the comparison voltage signal is greater than or equal to the voltage threshold, a reset signal is output; when the preset wake-up mode is the wake-up mode II, comparing the signal duration of the comparison voltage signal with a duration threshold preset in the wake-up mode II, and outputting a reset signal when the signal duration of the comparison voltage signal is greater than or equal to the duration threshold; or when the preset wake-up mode is the wake-up mode III, comparing the comparison voltage signal with a preset coding signal in the wake-up mode III, and outputting a reset signal when the matching degree of the comparison voltage signal and the coding signal is greater than or equal to a preset matching threshold.
In this alternative embodiment, the present application provides three different wake-up modes, and when the comparison voltage signal satisfies the wake-up condition of one of the wake-up modes, the reset signal can be output, so as to wake up the wake-up receiver. The flexibility of waking up is improved by a plurality of wake-up modes. When the preset wake-up mode is a wake-up mode one, if the voltage of the comparison voltage signal is greater than or equal to the voltage threshold, the comparison voltage signal is in accordance with the wake-up condition, and a reset signal is output; when the preset wake-up mode is a wake-up mode II, if the duration time of the comparison voltage signal is greater than or equal to the duration time threshold value, the wake-up condition is met, and a reset signal is output, wherein the duration time threshold value can be configured through a register or software; and when the preset wake-up mode is the wake-up mode III, if the matching degree of the voltage of the comparison voltage signal and the coding signal is greater than or equal to a preset matching threshold value, the condition of wake-up is met, and a reset signal is output, wherein the coding signal can be configured through a register or software. Preferably, when the preset wake-up mode is the wake-up mode three, the comparison voltage signal is input into the wake-up modem and compared with the predetermined code signal, and when the matching degree of the comparison voltage signal and the code signal satisfies the preset matching threshold, the input/output interface outputs a reset signal to wake up the receiver, wherein the preset matching threshold can be set to 90% to ensure the accuracy of the broadcast message and avoid false wake-up. When the comparison voltage signal is compared with the coding signal, the comparison voltage signal and the coding signal are compared respectively from the three aspects of data packet rate, data packet length and signal duration, and when the matching degrees compared from the three aspects all meet the preset matching threshold, the reset signal can be output to wake up the BLE system. Through comparison of the three aspects, the accuracy of the wake-up signal, namely the broadcast channel message is improved, and false wake-up is prevented.
It should be noted that the preset encoding signal is a programmable signal and can be modified by programming, that is, the packet rate, the packet length, and the signal duration of the preset encoding signal can be modified by self-definition.
In an optional embodiment of the present application, the wake-up receiver applied to BLE further includes: the radio frequency front end changes the sensitivity or the anti-interference performance of the awakening receiver according to the noise degree of the broadcast channel message, wherein when the noise degree in the channel is greater than or equal to a preset noise threshold value, the signal gain is reduced and the preset noise threshold value is increased so as to improve the anti-interference performance of the awakening receiver; and when the noise degree in the channel is smaller than the preset noise threshold value, increasing the signal gain and reducing the preset noise threshold value so as to improve the sensitivity of the awakening receiver.
In this alternative embodiment, the wake-up receiver applied to BLE has a radio frequency front end that can switch low-sensitivity and high-sensitivity paths and switch strong interference immunity and weak interference immunity paths, and switches the corresponding paths according to the noise level in the current channel, so as to ensure normal and unobstructed communication between signals and avoid signal loss. The method comprises the steps that a preset noise threshold value is utilized to determine the noise in the broadcast channel message, when the noise degree in the broadcast channel message is larger than or equal to the preset noise threshold value, in order to avoid the influence of too large noise on the normal transmission of signals, the signal gain is adjusted to be reduced, the preset noise threshold value is adjusted to be increased, the anti-interference performance of a wake-up receiver is improved, or a sensitivity path is closed, the anti-interference performance is used as the first performance of the wake-up receiver, noise is filtered, and the normal transmission of the signals is guaranteed; when the noise degree in the broadcast channel message is smaller than the preset noise threshold, in order to ensure that the signal can be transmitted completely, the signal gain is adjusted to be increased, and the preset noise threshold is adjusted to be decreased, so that the sensitivity of the awakening receiver is improved, or the interference path is closed, the sensitivity is used as the first performance of the interference path, and the signal can be transmitted completely.
It should be noted that the preset noise threshold can be programmed to automatically detect the external environment, thereby changing the sensitivity or interference immunity of the receiver.
In an optional embodiment of the present application, the wake-up receiver applied to BLE further includes: and the energy collection power supply management module comprises a power supply management module, and corresponding voltages are respectively output to each module in the awakening receiver through the power supply management module.
In this alternative embodiment, the system diagram of the wake-up receiver according to fig. 3, wherein the power management module has three output voltages, and the power management unit supports battery-less operation, wherein it provides 0.5V for the digital and rf modules, 1V for the internal high-performance digital module, and 2.5V for the I/O communication port; to save power consumption as much as possible.
In an optional embodiment of the present application, the energy harvesting power management module applied to the wake-up receiver for BLE further includes: the energy collector is used for collecting the energy of direct current voltage within a preset voltage range and providing electric quantity support for awakening the receiver; the band-gap reference module is used for providing reference voltage for the power management module; and the power failure detection and power failure restart module detects the working state of a circuit in the awakening receiver and ensures that the awakening receiver works normally.
In this alternative embodiment, according to the system diagram of the wake-up receiver shown in fig. 3, the energy collector circuit of the energy collection power management module is used to collect energy with dc voltage as low as 30mV, and can also obtain power generated by devices such as photovoltaic cells or thermoelectric generators, so as to support output and reduce power consumption; meanwhile, a band gap reference module is integrated inside to provide reference voltage for a power management module, and the power failure detection and power failure restart module is further arranged to prevent the circuit from working.
In an optional embodiment of the present application, the wake-up receiver applied to BLE further includes: and the oscillator is respectively connected with the radio frequency front end and the baseband processor, provides an intrinsic signal for the radio frequency front end and provides a clock signal for the baseband processor.
In this alternative embodiment, according to the system diagram of the wake-up receiver shown in fig. 3, a 32Khz oscillator is used to provide an intrinsic signal with a bandwidth of 32Khz for the rf front-end, so as to provide a basis for the subsequent wake-up step of the wake-up receiver; meanwhile, a 32Khz oscillator is used for providing a clock signal for the baseband processor, so that the baseband processor starts to work when the clock signal comes, namely, the operations of conversion, comparison, judgment and the like are carried out, the delay state is reduced to the maximum extent, and the awakening receiver is awakened.
In an optional embodiment of the present application, the wake-up receiver applied to BLE further includes: and the digital I/O and SPI interface module is connected with the baseband processor and used for inputting an externally written program, outputting a reset signal and reporting the current state of the awakening receiver.
In an alternative embodiment of the present application, the integrated baseband processor includes a back channel modem that supports multiple wake-up modes, two 32-bit timers, a reset handler and an interrupt handler. The wake-up modem receives a reverse channel message, i.e., a wake-up signal, from a BLE compliant mobile device and generates an interrupt upon receiving the wake-up signal. The 1-bit comparator output feeds a modem that uses multiple correlators to detect the presence of a BLE signal and measure the packet rate, length, and signal duration. Decoded according to the backchannel protocol into a string of symbols that are checked against programmable addresses and matches when interrupted. Finally, the baseband processor can be configured and the chip state can be reported through the memory mapping register configured by the digital I/O and the SPI in the SPI interface module.
In another embodiment of the present application, a wake-up receiving system applied to BLE is provided, which includes: a BLE mobile device that, upon waking up, transmits a broadcast channel message; the signal driving device comprises a baseband processor, the baseband processor receives the broadcast channel message sent by the BLE device and performs system awakening, wherein the baseband processor comprises a detector which converts the broadcast channel message into a corresponding detection direct current signal; a voltage comparator which compares the detection direct current signal with a reference voltage preset in the wake-up receiver to obtain a comparison voltage signal; and the wake-up modem outputs a reset signal to wake up the wake-up receiver when the comparison voltage signal meets the wake-up condition of the preset wake-up mode.
In the specific embodiment, when radio connection is carried out between the BLE mobile equipment and the signal driving equipment through Bluetooth, broadcast channel information of the Bluetooth, namely wake-up signal, is sent to a wake-up receiver by the BLE mobile equipment, the broadcast channel information sent by the BLE mobile equipment is received by a baseband processor in the signal driving equipment, the broadcast channel information is demodulated through a wave detector and converted into corresponding detection direct current signals, the detection direct current signals are input into a voltage comparator, the voltage comparator compares the detection direct current signals according to preset reference voltage, the voltage comparator outputs a group of corresponding high and low levels, namely comparison voltage signals, the wake-up modem outputs reset signals when the comparison voltage signals accord with the wake-up condition of the preset wake-up mode, and the BLE system in deep sleep is awakened by the reset signals, the signal driving equipment transmits a pairing signal to the BLE mobile equipment to be connected and paired with the BLE mobile equipment, so that the BLE mobile equipment and the signal driving equipment can be in mutual communication such as Bluetooth matching. The wake-up receiver applied to BLE realizes the radio communication between the mobile device and the signal driving device in an ultra-low power consumption mode through the reverse channel communication mode of the wake-up receiver.
The wake-up receiving system applied to BLE provided by the application has similar implementation principle and technical effect, and is not repeated herein.
In a specific embodiment of the present application, functional modules in a wake-up receiving system applied to BLE of the present application may be directly in hardware, in a software module executed by a processor, or in a combination of the two.
A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium.
The Processor may be a Central Processing Unit (CPU), other general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), other Programmable logic devices, discrete Gate or transistor logic, discrete hardware components, or any combination thereof. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal.
In another embodiment of the present application, a wake-up receiver wake-up method applied to BLE is provided, which includes: converting the received broadcast channel message into a corresponding detection direct current signal through a detector; comparing the detection direct current signal with a preset reference voltage in a wake-up receiver through a voltage comparator to obtain a comparison voltage signal; and comparing the comparison voltage signal with a preset wake-up condition of a wake-up mode through the wake-up modem, and outputting a reset signal to wake up the wake-up receiver when the comparison voltage signal meets the wake-up condition.
In the specific embodiment, when radio connection is performed between the BLE mobile device and the signal driving device through bluetooth, a broadcast channel message of bluetooth, namely, an awakening signal, is sent to an awakening receiver by the BLE mobile device, the broadcast channel message sent by the BLE mobile device is received by a baseband processor in the signal driving device, the broadcast channel message is demodulated by a detector and converted into a corresponding detection direct current signal, the detection direct current signal is input into a voltage comparator, the voltage comparator compares the detection direct current signal according to a preset reference voltage, the voltage comparator outputs a group of corresponding high and low levels, namely, a comparison voltage signal, the awakening modem compares the comparison voltage signal with an awakening condition of a preset awakening mode according to the comparison voltage signal, and outputs a reset signal when the comparison voltage signal meets the awakening condition, the BLE system of deep sleep is awaken by the signal that resets, and signal drive equipment transmission is paired the signal and is connected the pairing to BLE mobile device rather than pairing for can carry out bluetooth matching etc. intercommunication between BLE mobile device and the signal drive equipment. The wake-up receiver applied to BLE realizes the radio communication between the mobile device and the signal driving device in an ultra-low power consumption mode through the reverse channel communication mode of the wake-up receiver.
The wake-up receiver wake-up method applied to BLE provided by the application has similar implementation principle and technical effect, and is not repeated herein.
In another embodiment of the present application, a computer-readable storage medium stores computer instructions that are operated to perform the wake-up method applied to a wake-up receiver for BLE described in the above embodiments.
In one particular embodiment of the present application, a computer device, comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores computer instructions executable by the at least one processor, the at least one processor operating the computer instructions to perform the wake-up method applied to the wake-up receiver of BLE described in the above embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all equivalent structural changes made by using the contents of the specification and the drawings, which are directly or indirectly applied to other related technical fields, are included in the scope of the present application.
Claims (9)
1. A wake-up receiver applied to BLE, comprising:
a baseband processor disposed within the signal driven device for receiving broadcast channel messages generated by the BLE mobile device itself, the baseband processor comprising:
a detector for converting the broadcast channel message into a corresponding detected direct current signal;
the voltage comparator is connected with the detector and used for comparing the detected direct-current signal with a preset reference voltage in the awakening receiver to obtain a comparison voltage signal; and
the wake-up modem is connected with the voltage comparator and used for detecting the comparison voltage signal by using a correlator in the wake-up modem, outputting a reset signal when the comparison voltage signal meets a wake-up condition of a preset wake-up mode, and waking up the wake-up receiver by the reset signal; when the preset wake-up mode is a wake-up mode one, comparing the voltage of the comparison voltage signal with a preset voltage threshold value in the wake-up mode one, and when the voltage of the comparison voltage signal is greater than or equal to the voltage threshold value, outputting the reset signal;
when the preset wake-up mode is a wake-up mode II, comparing the signal duration of the comparison voltage signal with a duration threshold preset in the wake-up mode II, and when the signal duration of the comparison voltage signal is greater than or equal to the duration threshold, outputting the reset signal; or
When the preset wake-up mode is the wake-up mode III, comparing the comparison voltage signal with a preset coding signal in the wake-up mode III, and when the matching degree of the comparison voltage signal and the coding signal is larger than or equal to a preset matching threshold, outputting the reset signal.
2. The wake-up receiver applied to BLE of claim 1, further comprising:
a radio frequency front end coupled to the baseband processor to change a sensitivity or interference immunity of the wake-up receiver based on a noise level of the broadcast channel message, wherein
When the noise degree in the channel is greater than or equal to a preset noise threshold value, reducing signal gain and increasing the preset noise threshold value so as to improve the anti-interference performance of the awakening receiver;
and when the noise degree in the channel is smaller than a preset noise threshold value, improving the signal gain and reducing the preset noise threshold value so as to improve the sensitivity of the awakening receiver.
3. The wake-up receiver applied to BLE according to claim 1 or 2, further comprising:
and the energy collection power supply management module comprises a power supply management module, and corresponding voltages are respectively output to each module in the awakening receiver through the power supply management module.
4. The wake-up receiver applied to BLE of claim 3, wherein the energy harvesting power management module further comprises:
the energy collector is used for collecting the energy of the direct-current voltage within a preset voltage range and providing electric quantity support for the awakening receiver;
a band-gap reference module for providing a reference voltage for the power management module; and
and the power failure detection and power failure restart module is used for detecting the working state of a circuit in the awakening receiver and ensuring the normal work of the awakening receiver.
5. The wake-up receiver applied to BLE of claim 2, further comprising:
and the oscillator is respectively connected with the radio frequency front end and the baseband processor and is used for providing an intrinsic signal for the radio frequency front end and a clock signal for the baseband processor.
6. The wake-up receiver applied to BLE of claim 5, wherein the baseband processor further comprises:
and the digital I/O and SPI interface module is connected with the baseband processor and used for inputting an externally written program, outputting the reset signal and reporting the current state of the wake-up receiver.
7. A wake-up receiving system applied to BLE, comprising:
a BLE mobile device that, upon waking up, transmits a broadcast channel message;
a signal driven device comprising a baseband processor that receives the broadcast channel message generated by the BLE device itself for system wake-up, wherein the baseband processor comprises,
a detector that converts the broadcast channel message into a corresponding detected direct current signal;
the voltage comparator compares the detection direct current signal with a preset reference voltage in the awakening receiver to obtain a comparison voltage signal; and
the wake-up modem detects the comparison voltage signal by using a correlator in the wake-up modem, outputs a reset signal when the comparison voltage signal accords with a wake-up condition of a preset wake-up mode, and wakes up the wake-up receiver;
when the preset wake-up mode is a wake-up mode one, comparing the voltage of the comparison voltage signal with a preset voltage threshold value in the wake-up mode one, and when the voltage of the comparison voltage signal is greater than or equal to the voltage threshold value, outputting the reset signal;
when the preset wake-up mode is a wake-up mode II, comparing the signal duration of the comparison voltage signal with a duration threshold preset in the wake-up mode II, and when the signal duration of the comparison voltage signal is greater than or equal to the duration threshold, outputting the reset signal; or
When the preset wake-up mode is the wake-up mode III, comparing the comparison voltage signal with a preset coding signal in the wake-up mode III, and when the matching degree of the comparison voltage signal and the coding signal is larger than or equal to a preset matching threshold, outputting the reset signal.
8. A wake-up receiver wake-up method applied to BLE is characterized by comprising the following steps:
converting the received broadcast channel message into a corresponding detection direct current signal through a detector;
comparing the detection direct current signal with a preset reference voltage in a wake-up receiver through a voltage comparator to obtain a comparison voltage signal; and
comparing the comparison voltage signal with a wakeup condition of a preset wakeup mode through a correlator in the wakeup modem, outputting a reset signal when the comparison voltage signal meets the wakeup condition, and waking up a wakeup receiver;
when the preset wake-up mode is a wake-up mode one, comparing the voltage of the comparison voltage signal with a preset voltage threshold value in the wake-up mode one, and when the voltage of the comparison voltage signal is greater than or equal to the voltage threshold value, outputting the reset signal;
when the preset wake-up mode is a wake-up mode II, comparing the signal duration of the comparison voltage signal with a duration threshold preset in the wake-up mode II, and when the signal duration of the comparison voltage signal is greater than or equal to the duration threshold, outputting the reset signal; or
When the preset wake-up mode is the wake-up mode III, comparing the comparison voltage signal with a preset coding signal in the wake-up mode III, and when the matching degree of the comparison voltage signal and the coding signal is larger than or equal to a preset matching threshold, outputting the reset signal.
9. A computer device, comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor;
wherein the memory stores computer instructions executable by the at least one processor, the at least one processor operating the computer instructions to perform the wake-up receiver method applied to BLE of claim 8.
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