Device wake-up method and apparatus, device, and storage medium

Abstract

This application discloses a device wake-up method, apparatus, device, and storage medium. The method includes: receiving a radio frequency (RF) wake-up signal sent by an RF device, the RF wake-up signal comprising a plurality of spaced pulses; rectifying and filtering the RF wake-up signal using a passive envelope detection circuit to obtain an envelope signal; and triggering a target device to enter a wake-up state when the pulse interval of the envelope signal matches the time constant of a time feature detection circuit. This solution, by constructing an analog time-matching detection mechanism based on pulse interval characteristics, enables the device to identify and respond to specific RF wake-up signals without requiring continuous power supply or complex digital processing.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to a device wake-up method, apparatus, device, and storage medium. Background Technology

[0002] In passive or semi-passive IoT systems, nodes typically rely on radio frequency energy from the environment to obtain power, and their device lifespan is closely related to their standby power consumption. Therefore, minimizing standby power consumption while ensuring that devices can be activated by external signals is a crucial issue in the design of passive IoT systems.

[0003] In existing technologies, one approach employs an energy-threshold-based radio frequency (RF) wake-up mechanism, triggering device wake-up when the received RF signal energy exceeds a preset threshold. However, in real-world wireless environments, RF signals generated by Wi-Fi, radar, or other read / write devices may also exceed this threshold, leading to false wake-ups, frequent device startups, and the consumption of limited acquisition energy. Another approach uses a digital wake-up mechanism, maintaining a low-power oscillator and decoding circuitry to continuously resolve the wake-up flag. However, this method still consumes microwatts of power, making it difficult to achieve true zero-power standby or long-term online operation. Summary of the Invention

[0004] This application provides a device wake-up method, apparatus, device, and storage medium, which can achieve zero-power identification and reliable triggering of the target radio frequency wake-up signal by introducing a time-matching detection mechanism based on the characteristics of radio frequency pulse intervals and a passive envelope detection processing method into the device wake-up mechanism.

[0005] In a first aspect, this application provides a device wake-up method, including:

[0006] Receives a radio frequency wake-up signal sent by a radio frequency device, wherein the radio frequency wake-up signal comprises a plurality of pulses distributed at intervals; The radio frequency wake-up signal is rectified and filtered by a passive envelope detector circuit to obtain the envelope signal. When the pulse interval of the envelope signal matches the time constant of the time feature detection circuit, the target device is triggered to enter the wake-up state. The time feature detection circuit includes a matching detection circuit based on the time constant formed by resistance and capacitance.

[0007] Secondly, this application provides a device wake-up device, comprising: The receiving module is configured to receive a radio frequency wake-up signal sent by a radio frequency device, the radio frequency wake-up signal comprising a plurality of spaced pulses; The detection module is configured to rectify and filter the radio frequency wake-up signal through a passive envelope detection circuit to obtain an envelope signal. The wake-up module is configured to trigger the target device to enter a wake-up state when the pulse interval of the envelope signal matches the time constant of the time feature detection circuit, wherein the time feature detection circuit includes a matching detection circuit based on the time constant formed by resistance and capacitance.

[0008] Thirdly, this application provides a device wake-up device, comprising: One or more processors; A memory that stores one or more programs, which, when executed by one or more processors, cause the one or more processors to implement the device wake-up method as described in the first aspect.

[0009] Fourthly, this application provides a storage medium containing computer-executable instructions, which, when executed by a computer processor, are used to perform the device wake-up method as described in the first aspect.

[0010] In this application, a device wake-up method based on RF pulse time interval matching and passive envelope detection processing is constructed, achieving low-power identification and reliable triggering of RF wake-up signals. This method receives an RF wake-up signal composed of several spaced pulses and performs rectification and filtering on the signal using a passive envelope detection circuit to obtain an envelope signal reflecting the pulse time characteristics. A time characteristic detection circuit based on resistors and capacitors is used to match and detect the pulse intervals in the envelope signal. When the pulse interval matches the circuit time constant, a trigger signal is output to drive the target device into a wake-up state. By introducing a time interval characteristic matching mechanism and passive detection processing, this solution improves the stability and anti-interference capability of device wake-up without complex processing or continuous power supply, making it suitable for RF wake-up scenarios of passive or low-power devices. Attached Figure Description

[0011] Figure 1 This is a flowchart of a device wake-up method provided in an embodiment of this application; Figure 2 This is a flowchart of a device wake-up triggering method provided in an embodiment of this application; Figure 3 This is a flowchart of a step-by-step voltage accumulation method provided in an embodiment of this application; Figure 4 This is a flowchart of a method for powering on a target device according to an embodiment of this application; Figure 5 This is a schematic diagram of a device wake-up method provided in an embodiment of this application; Figure 6 This is a structural block diagram of a device wake-up device provided in an embodiment of this application; Figure 7 This is a schematic diagram of the structure of a device wake-up device provided in an embodiment of this application. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this application clearer, specific embodiments of this application will be described in further detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely for explaining this application and not for limiting it. It should also be noted that, for ease of description, only the parts relevant to this application are shown in the drawings, not all of them. Before discussing exemplary embodiments in more detail, it should be mentioned that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although the flowcharts describe operations (or steps) as being processed sequentially, many of these operations can be performed in parallel, concurrently, or simultaneously. Furthermore, the order of the operations can be rearranged. A process can be terminated when its operation is completed, but it may also have additional steps not included in the drawings. A process can correspond to a method, function, procedure, subroutine, subroutine, etc.

[0013] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0014] Currently, with the development of passive or semi-passive IoT systems, device standby power consumption has become a key factor determining their lifespan and availability. However, in terms of wake-up mechanism design, existing technologies mainly fall into two categories: energy threshold triggering and digital signal recognition, both of which have significant limitations. Energy threshold triggering technology activates the device solely based on whether the received radio frequency energy exceeds a threshold. While it doesn't require continuous power supply, the lack of signal discrimination makes it susceptible to interference from Wi-Fi, radar, or other reader signals, leading to false wake-ups, frequent startups, and accelerated energy consumption. Digital signal recognition-based wake-up technology uses normally-on low-power oscillators and decoding circuits to parse identification information for accurate wake-up. While this improves anti-interference capabilities, it continuously consumes microwatts of power, failing to achieve zero-power standby. Due to the structural contradictions between the two mechanisms in selectivity and power consumption control, existing devices struggle to simultaneously achieve wake-up reliability and extremely low power consumption, limiting the long-term stable operation of passive IoT.

[0015] Therefore, this invention aims to propose a device wake-up method that can identify and trigger wake-up signals in complex radio frequency environments, thereby achieving both wake-up accuracy and zero power consumption. This method receives a radio frequency wake-up signal containing interval pulses and uses a passive envelope detection circuit for rectification and filtering to extract the envelope signal. Based on a time characteristic detection circuit composed of resistors and capacitors, the pulse intervals of the envelope signal are matched and determined, triggering device wake-up only when the time constant matching condition is met. By introducing a time characteristic selection mechanism, this method effectively suppresses non-target signal interference without requiring power supply, avoiding false wake-ups, and is suitable for low-power long-term operation scenarios of passive or semi-passive devices.

[0016] Figure 1 This is a flowchart illustrating a device wake-up method provided in an embodiment of this application. (Reference) Figure 1 The device wake-up method specifically includes: S110. Receive a radio frequency wake-up signal sent by a radio frequency device, wherein the radio frequency wake-up signal includes a plurality of pulses distributed at intervals.

[0017] In some embodiments, the radio frequency (RF) device can be a transmitting device for sending RF signals, and the RF wake-up signal can be an RF signal emitted by the RF device to trigger the target device to enter a wake-up state. The RF energy pulses in the RF wake-up signal are distributed according to a preset time interval.

[0018] In one embodiment, the radio frequency wake-up signal can be received by means of a radio frequency receiving circuit on the target device.

[0019] In one embodiment, the radio frequency (RF) wake-up signal refers to a low-power wireless excitation signal used to trigger a target device to switch from a sleep state to an operating state. It can be an RF signal composed of several spaced pulses, where the time interval between each pulse can be set according to a preset rule to distinguish wake-up signals from different devices. For example, the preset rule can be a time-domain encoding rule, a pulse count encoding rule, or a pulse sequence combination encoding rule. The corresponding setting method can be to map the target device's identification information to a corresponding pulse interval sequence and generate a corresponding RF wake-up signal accordingly.

[0020] Through the above steps, the radio frequency wake-up signal containing several spaced pulses sent by the radio frequency device can be received, enabling the target device to obtain the original signal input used to trigger the wake-up operation, providing a basis for subsequent signal processing and wake-up determination.

[0021] S120. The radio frequency wake-up signal is rectified and filtered by a passive envelope detector circuit to obtain an envelope signal.

[0022] In some embodiments, the passive envelope detection circuit can be a radio frequency signal processing circuit composed of passive components such as diodes, capacitors, and resistors, used to extract envelope information from the radio frequency wake-up signal. The envelope signal can be a low-frequency signal reflecting the amplitude change of the radio frequency wake-up signal, used for subsequent time feature detection or wake-up determination.

[0023] In one embodiment, the method of rectifying and filtering the radio frequency wake-up signal through a passive envelope detector circuit can be as follows: the radio frequency signal is rectified by the diode in the passive envelope detector circuit, and the high-frequency components of the rectified signal are removed by a filter network composed of capacitors and resistors to obtain the envelope signal.

[0024] Through the above steps, the radio frequency wake-up signal can be rectified and filtered by the passive envelope detection circuit to obtain the envelope signal. This allows the target device to extract the amplitude change information of the radio frequency signal without active amplification, providing a basis for subsequent wake-up determination.

[0025] S130. When the pulse interval of the envelope signal matches the time constant of the time feature detection circuit, the target device is triggered to enter the wake-up state, wherein the time feature detection circuit includes a matching detection circuit based on the time constant formed by resistance and capacitance.

[0026] In some embodiments, the envelope signal can be a low-frequency pulse signal obtained by processing the radio frequency wake-up signal through a passive envelope detection circuit, which contains pulse interval information corresponding to the radio frequency wake-up signal. The time feature detection circuit can be an analog circuit based on resistors and capacitors, whose time constant is determined by the resistance and capacitance values, and is used to perform matching detection of the time interval characteristics of the input signal.

[0027] In one embodiment, the method to trigger the target device to enter the wake-up state can be: inputting the envelope signal into the time feature detection circuit, when the pulse interval of the envelope signal matches the time constant of the circuit, the capacitor voltage can be maintained within a preset range between adjacent pulses, so that the circuit output reaches the trigger level, thereby driving the target device to enter the wake-up state.

[0028] In one embodiment, the matching relationship between the pulse interval and the time constant can be determined by the following formula:

[0029] in, The pulse interval of the envelope signal. The time constant of the time characteristic detection circuit. and To match the tolerance coefficient. Optionally, matching the pulse interval of the envelope signal with the time constant of the time feature detection circuit means that within the interval between adjacent pulses, the voltage attenuation of the time feature detection circuit is within a preset range, so that the voltage established by the previous pulse can remain above the effective decision threshold when the next pulse arrives, thereby ensuring that the pulse sequence can be continuously and stably identified.

[0030] In one embodiment, when the pulse interval of the envelope signal does not meet the time constant matching condition, the capacitor voltage will overcharge and discharge, causing the output to fail to reach the trigger threshold, thereby avoiding false triggering of the target device.

[0031] Through the above steps, the target device can be triggered to enter the wake-up state when the pulse interval of the envelope signal is matched with the time constant of the time feature detection circuit. This enables the target device to reliably wake up based on the time structure of the radio frequency signal and improves the ability to suppress interference signals.

[0032] Optionally, Figure 2 This is a flowchart of a device wake-up triggering method provided in an embodiment of this application. The time feature detection circuit also includes a multi-stage charge pump circuit, see reference. Figure 2 The specific methods for triggering the device's wake-up include: S1301, The envelope signal drives the multi-stage charge pump circuit to perform stage-by-stage voltage accumulation to form a final stage voltage in the final stage charge pump circuit.

[0033] For example, a charge pump circuit can be a voltage multiplier circuit consisting of multiple cascaded capacitor and diode units, used to progressively boost the voltage of the input signal.

[0034] In one embodiment, the step-by-step voltage accumulation can be performed by inputting an envelope signal to the input terminal of a charge pump circuit. During each pulse cycle, the capacitors of each stage of the charge pump circuit are charged and voltages are superimposed sequentially through diode conduction, so that the voltage is accumulated step-by-step in the cascaded structure.

[0035] Through the above steps, the multi-stage charge pump circuit can be driven by the envelope signal to perform step-by-step voltage accumulation, forming a final stage voltage in the final stage charge pump circuit, so that the target device can obtain sufficient driving voltage under passive conditions, providing a voltage basis for subsequent wake-up triggering.

[0036] Optionally, driving the multi-stage charge pump circuit to perform stage-by-stage voltage accumulation via the envelope signal includes: When the pulse width of the envelope signal is within a preset pulse width range, the pulse of the envelope signal charges the energy storage capacitor in the charge pump circuit, thereby driving the multi-stage charge pump circuit to perform stage-by-stage voltage accumulation.

[0037] For example, the pulse width range can be the high-level duration range of the valid wake-up signal corresponding to the target device, used to define the pulse characteristics of the valid wake-up signal.

[0038] In one embodiment, the energy storage capacitor can be charged by: when the pulse width of the input pulse meets the charging condition of the charge pump circuit, the diode in the charge pump circuit is turned on, and the energy storage capacitor of the charge pump circuit is charged during the high level of the pulse.

[0039] In one embodiment, the step-by-step voltage accumulation can be performed by using multiple continuous pulses to charge the energy storage capacitors of each stage of the charge pump circuit step by step, so that the voltage is transferred and accumulated step by step through the cascaded structure.

[0040] Through the above steps, when the pulse width of the envelope signal is within a preset range, the energy storage capacitor in the charge pump circuit can be effectively charged, and the multi-stage charge pump circuit can be driven to perform step-by-step voltage accumulation, so that the target device can respond to the radio frequency wake-up signal that conforms to the time characteristics, thereby improving the accuracy of wake-up determination and anti-interference capability.

[0041] Optionally, Figure 3 This is a flowchart of a step-by-step voltage accumulation method provided in an embodiment of this application. A matching detection circuit is provided between adjacent charge pump circuits, as shown in the reference diagram. Figure 3 The step-by-step voltage accumulation method specifically includes: S13011. The envelope signal drives the front-end charge pump circuit to accumulate voltage and obtain the first voltage.

[0042] For example, the front-end charge pump circuit can be the first-stage voltage boosting circuit in a multi-stage charge pump structure, which consists of capacitors and diodes and is used to perform primary voltage accumulation on the input envelope signal. The first voltage can be the voltage output by the front-end charge pump circuit.

[0043] In one embodiment, the way to drive the front-end charge pump circuit to accumulate voltage is as follows: during the high-level pulse of the envelope signal, the diode of the front-end charge pump circuit is turned on, causing the energy storage capacitor therein to complete charging, thereby forming a first voltage.

[0044] Through the above steps, the front-end charge pump circuit can be driven by the envelope signal to accumulate voltage and obtain the first voltage, enabling the target device to complete the initial stage of voltage boosting and providing a foundation for subsequent cascaded voltage superposition.

[0045] S13012. The first voltage is delayed and transmitted through a matching detection circuit connected to the front-end charge pump circuit to obtain a second voltage.

[0046] For example, the matching detection circuit can be a delay circuit based on resistors and capacitors connected to the preceding charge pump circuit. The time constant of the matching detection circuit is determined by the resistance and capacitance values, and it is used to perform time delay processing on the input voltage. The first voltage can be the accumulated voltage output by the preceding charge pump circuit, and the second voltage can be the voltage signal after the delay.

[0047] In one embodiment, the first voltage can be delayed by a matching detection circuit connected to the preceding charge pump circuit by inputting the first voltage into the matching detection circuit consisting of a resistor and a capacitor. The capacitor is charged under the action of the resistor, and the capacitor voltage gradually increases over time. When the corresponding time constant is reached, a stable delayed voltage is formed at the output terminal.

[0048] Through the above steps, the first voltage can be delayed and transmitted through the matching detection circuit connected to the preceding charge pump circuit to obtain the second voltage, so that the voltage signal is transmitted in time sequence in the cascaded structure, providing a stable input for the accumulation of voltage in subsequent stages.

[0049] S13013, The second voltage is input to the subsequent charge pump circuit for voltage accumulation, so as to form a step-by-step voltage accumulation between the multi-stage charge pump circuits.

[0050] For example, the subsequent charge pump circuit can be a voltage booster circuit cascaded with the preceding charge pump circuit. The subsequent charge pump circuit consists of capacitors and diodes, used to further accumulate the second voltage. The second voltage can be a voltage signal that has been delayed by a matched detection circuit, used as the input voltage of the subsequent charge pump circuit.

[0051] In one embodiment, the second voltage can be input to the subsequent charge pump circuit for voltage accumulation by applying the second voltage to the input terminal of the subsequent charge pump circuit, and further accumulating the second voltage in the subsequent charge pump circuit through the charging and discharging of the capacitor and the conduction of the diode.

[0052] Through the above steps, the second voltage can be input to the subsequent charge pump circuit for voltage accumulation, so that the multi-stage charge pump circuits can form a step-by-step voltage accumulation, thereby obtaining a higher output voltage under low energy input conditions and providing voltage support for waking up the target device.

[0053] S1302. When the final stage voltage reaches the preset wake-up voltage threshold, the target device is brought into the wake-up state.

[0054] For example, the final stage voltage can be a voltage signal formed at the final stage output after the voltages of a multi-stage charge pump circuit have accumulated at each stage, and the wake-up voltage threshold can be a preset voltage threshold used to trigger the target device to enter the working state. The target device can be an electronic device in a sleep or low-power state, which enters the normal working mode after receiving a wake-up signal.

[0055] In one embodiment, the target device can be driven into a wake-up state by inputting a final stage voltage to a MOSFET switch. When the final stage voltage exceeds the wake-up voltage threshold, the MOSFET switch is turned on, driving the target device to switch from a sleep state to a wake-up state.

[0056] Through the above steps, the target device can be brought into a wake-up state when the final stage voltage reaches the preset wake-up voltage threshold, enabling the target device to achieve passive wake-up based on the accumulation of radio frequency energy, thereby improving the reliability and energy utilization efficiency of the wake-up process.

[0057] Optionally, Figure 4 This is a flowchart illustrating a method for powering on a target device according to an embodiment of this application. (Reference) Figure 4 The specific methods for powering on the target device include: S13021, Connect the power supply path of the target device.

[0058] For example, the power supply path can be a power connection path for providing electrical energy to the target device, which may include switching devices, conduction control circuits, and power input terminals.

[0059] In one embodiment, the power supply path can be turned on by controlling the switching device to turn on the power supply path after the final stage voltage reaches the wake-up voltage threshold.

[0060] By following the steps above, the power supply path of the target device can be opened, so that the target device can obtain power support after the wake-up conditions are met, thereby entering the normal working state and improving the wake-up reliability and response capability of the system.

[0061] S13022. Provide operating power to the control circuit of the target device through the power supply path.

[0062] For example, the control circuit may be a control module in the target device for performing device initialization, signal processing, or function control.

[0063] In one embodiment, the way to provide operating power to the control circuit of the target device can be: after the power supply path is turned on, the power supply voltage is transmitted to the power input terminal of the control circuit through a switching device.

[0064] Through the above steps, working power can be provided to the control circuit of the target device through the power supply path, enabling the control circuit to start up and enter the working state, thereby realizing the wake-up and functional activation of the target device.

[0065] Optionally, the charge pump circuit includes an energy storage capacitor and a unidirectional diode.

[0066] For example, a charge pump circuit can be a voltage accumulation circuit structure composed of an energy storage capacitor and a unidirectional diode, used to realize charge transfer and voltage boosting under the drive of a pulse signal. The energy storage capacitor can be a capacitor element used to store charge, and the unidirectional diode can be a conducting device used to control the unidirectional flow of current.

[0067] With the above structure, a charge pump circuit can be formed by an energy storage capacitor and a unidirectional conduction diode, enabling the target device to accumulate voltage under the drive of a pulse signal, providing voltage support for low-power or passive wake-up scenarios.

[0068] Optionally, the device wake-up method further includes: If the pulse interval of the envelope signal does not match the time constant of the time feature detection circuit, the voltage in the charge pump circuit is discharged through the matching detection circuit.

[0069] For example, the envelope signal can be a pulse signal obtained by envelope detection of the radio frequency wake-up signal, and its pulse interval can be related to a preset time characteristic. The time characteristic detection circuit can be a matched detection circuit based on resistors and capacitors, and its time constant is used to determine whether the pulse interval meets the preset condition.

[0070] In one embodiment, the voltage discharge process can be as follows: when the pulse interval does not meet the preset time constant, the energy storage capacitor will discharge through the resistor path, so that the voltage accumulated in the charge pump circuit gradually decreases.

[0071] By following the steps above, even when the pulse interval of the envelope signal does not match the time constant of the time feature detection circuit, the voltage in the charge pump circuit can be discharged by the matching detection circuit, thereby avoiding false triggering caused by erroneous signals and improving the anti-interference capability and wake-up reliability of the target device.

[0072] Optionally, Figure 5 This is a schematic diagram of a device wake-up method provided in an embodiment of this application. (Reference) Figure 5 The device wake-up method specifically includes: radio frequency device 11 and target device 12; wherein, the radio frequency device includes a sequence generator 111, an on / off keying modulator 112 and a power amplifier 113; the target device includes a receiving antenna 121, an envelope detection circuit 122, a time feature detection circuit 123, a MOSFET switch 124 and a control circuit 125.

[0073] For example, the sequence generator 111 in the radio frequency device 11 generates a timing sequence corresponding to the target device to be woken up, the on / off keying modulator 112 maps the timing sequence to the radio frequency carrier to obtain the radio frequency wake-up signal, and the power amplifier 113 amplifies the radio frequency wake-up signal and uses it for air interface propagation.

[0074] In one embodiment, the receiving antenna 121 in the target device 12 receives a radio frequency wake-up signal. The envelope detection circuit 122 removes the carrier wave from the radio frequency wake-up signal to obtain the envelope signal. The time feature detection circuit 123 performs physical matching filtering on the envelope signal through a matched detection circuit and a charge pump circuit. Only when the pulse interval of the envelope signal matches the time constant of the time feature detection circuit 123 will the time feature detection circuit 123 accumulate voltage on the envelope signal and output a final stage voltage. The MOSFET switch 124 is turned on when the final stage voltage is greater than a set voltage threshold. The control circuit 125 wakes up the target device 12 after the MOSFET switch is turned on.

[0075] In one embodiment, the time feature detection circuit 123 includes a first energy storage capacitor, a delay resistor, and a second energy storage capacitor arranged in cascade. When the first pulse of the radio frequency wake-up signal arrives, the first pulse is filtered by the envelope detection circuit 122 and charges the first energy storage capacitor to establish an initial voltage. During the pulse interval, the first energy storage capacitor releases charge to the second energy storage capacitor through the delay resistor, forming a pre-charge voltage on the second energy storage capacitor. When subsequent pulses arrive, energy is injected into the second energy storage capacitor based on the pre-charge voltage, thereby forming a voltage superposition. When the pulse interval matches the time constant determined by the delay resistor and the energy storage capacitor, the pre-charge voltage remains within an effective range between adjacent pulses, allowing multi-level voltages to accumulate step by step and eventually reach a preset threshold. When the pulse interval is greater than the time constant, the charge in the first energy storage capacitor is discharged during the interval, and an effective superposition cannot be formed. When the pulse interval is less than the time constant, the charge fails to be transferred to the subsequent stage, resulting in the inability to establish the subsequent stage voltage, thereby suppressing the mismatch signal.

[0076] Based on the above embodiments, Figure 6 This is a structural block diagram of a device wake-up device provided in an embodiment of this application. (Reference) Figure 6 The device wake-up device provided in this embodiment specifically includes: a receiving module 21, a detection module 22, and a wake-up module 23.

[0077] The receiving module 21 is configured to receive a radio frequency wake-up signal sent by a radio frequency device, the radio frequency wake-up signal including a plurality of pulses distributed at intervals; the detection module 22 is configured to rectify and filter the radio frequency wake-up signal through a passive envelope detection circuit to obtain an envelope signal; the wake-up module 23 is configured to trigger the target device to enter a wake-up state when the pulse interval of the envelope signal matches the time constant of the time feature detection circuit, wherein the time feature detection circuit includes a matching detection circuit based on the time constant formed by resistance and capacitance.

[0078] Based on the above embodiments, the time feature detection circuit further includes a multi-stage charge pump circuit, and the wake-up module 23 includes: a voltage accumulation unit, configured to drive the multi-stage charge pump circuit to perform step-by-step voltage accumulation through the envelope signal, so as to form a final stage voltage in the final stage charge pump circuit; and a voltage comparison unit, configured to enable the target device to enter the wake-up state when the final stage voltage reaches a preset wake-up voltage threshold.

[0079] Based on the above embodiments, the charge pump circuit includes an energy storage capacitor and a unidirectional conduction diode.

[0080] Based on the above embodiments, the voltage accumulation unit includes a pulse width determination subunit, configured to provide charging for the energy storage capacitor in the charge pump circuit through the pulse of the envelope signal when the pulse width of the envelope signal is within a preset pulse width range, so as to drive the multi-stage charge pump circuit to perform stage-by-stage voltage accumulation.

[0081] Based on the above embodiments, a matching detection circuit is provided between adjacent charge pump circuits, and the voltage accumulation unit further includes: a first voltage subunit configured to drive the preceding charge pump circuit to accumulate voltage through the envelope signal to obtain a first voltage; a second voltage subunit configured to delay the transmission of the first voltage through the matching detection circuit connected to the preceding charge pump circuit to obtain a second voltage; and a step-by-step accumulation subunit configured to input the second voltage to the subsequent charge pump circuit for voltage accumulation, so as to form step-by-step voltage accumulation between multiple charge pump circuits.

[0082] Based on the above embodiments, the voltage comparison unit includes: a path conduction subunit configured to conduct the power supply path of the target device; and a working power supply subunit configured to provide working power to the control circuit of the target device through the power supply path.

[0083] Based on the above embodiments, the device wake-up device further includes: a voltage discharge module, configured to discharge the voltage in the charge pump circuit through the matching detection circuit when the pulse interval of the envelope signal does not match the time constant of the time feature detection circuit.

[0084] The device wake-up device provided in this embodiment, as described above, constructs a collaborative wake-up system consisting of a receiving module 21, a detection module 22, and a wake-up module 23. This system enables the acquisition of radio frequency signals, envelope extraction, and time feature matching triggering, thereby achieving reliable wake-up under passive conditions. The receiving module 21 receives a radio frequency wake-up signal containing spaced pulses. The detection module 22 rectifies and filters the radio frequency signal using a passive envelope detection circuit to obtain an envelope signal that retains the pulse time structure. The wake-up module 23, based on a time feature detection circuit composed of resistors and capacitors, accumulates voltage and triggers device wake-up when the pulse interval matches the time constant, and suppresses voltage buildup to avoid false triggering when the interval does not match. Through the collaboration of these modules, this embodiment can achieve selective response to specific waveforms under zero standby power consumption.

[0085] The device wake-up device provided in this application embodiment can be used to execute the device wake-up method provided in the above embodiment, and has corresponding functions and beneficial effects.

[0086] Figure 7This is a schematic diagram of a device wake-up device provided in an embodiment of this application, for reference. Figure 7 The device wake-up device includes: a processor 31, a memory 32, a communication device 33, an input device 34, and an output device 35. The number of processors 31 and the number of memories 32 in the device wake-up device can be one or more. The processor 31, memory 32, communication device 33, input device 34, and output device 35 of the device wake-up device can be connected via a bus or other means.

[0087] The memory 32, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the device wake-up method in any embodiment of this application (e.g., receiving module 21, detection module 22, and wake-up module 23 in the device wake-up device). The memory 32 may primarily include a program storage area and a data storage area. The program storage area may store the operating system and at least one application program required for a function; the data storage area may store data created based on the use of the device, etc. Furthermore, the memory 32 may include high-speed random access memory and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory may further include memory remotely located relative to the processor, and these remote memories can be connected to the device via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0088] The communication device 33 is used for data transmission.

[0089] The processor 31 executes various functional applications and data processing of the device by running software programs, instructions and modules stored in the memory 32, thereby realizing the device wake-up method described above.

[0090] Input device 34 can be used to receive input digital or character information, and to generate key signal inputs related to user settings and function control of the device. Output device 35 may include display devices such as a display screen.

[0091] The device wake-up device provided above can be used to execute the device wake-up method provided in the above embodiments, and has corresponding functions and beneficial effects.

[0092] This application embodiment also provides a storage medium containing computer-executable instructions. When executed by a computer processor, the computer-executable instructions are used to execute a device wake-up method. The device wake-up method includes: receiving a radio frequency wake-up signal sent by a radio frequency device, the radio frequency wake-up signal including a plurality of spaced pulses; rectifying and filtering the radio frequency wake-up signal through a passive envelope detection circuit to obtain an envelope signal; and triggering a target device to enter a wake-up state when the pulse interval of the envelope signal matches the time constant of a time feature detection circuit, wherein the time feature detection circuit includes a matching detection circuit based on a time constant formed by resistance and capacitance.

[0093] Storage medium—any type of memory device or storage device. The term "storage medium" is intended to include: mounting media, such as CD-ROM, floppy disk, or magnetic tape devices; computer system memory or random access memory, such as DRAM, DDR RAM, SRAM, EDO RAM, etc.; non-volatile memory, such as flash memory, magnetic media (e.g., hard disk or optical storage); registers or other similar types of memory elements, etc. Storage medium may also include other types of memory or combinations thereof. Furthermore, storage medium may reside in a first computer system in which a program is executed, or it may reside in a different second computer system connected to the first computer system via a network (such as the Internet). The second computer system can provide program instructions to the first computer for execution. The term "storage medium" may include two or more storage media residing in different locations (e.g., in different computer systems connected via a network). Storage medium may store program instructions (e.g., specifically implemented as a computer program) executable by one or more processors.

[0094] Of course, the computer-executable instructions provided in the embodiments of this application are not limited to the device wake-up method described above, but can also execute related operations in the device wake-up method provided in any embodiment of this application.

[0095] The device wake-up device, storage medium, and device wake-up equipment provided in the above embodiments can execute the device wake-up method provided in any embodiment of this application. For technical details not described in detail in the above embodiments, please refer to the device wake-up method provided in any embodiment of this application.

[0096] The above description is merely a preferred embodiment and the technical principles employed in this application. This application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions that can be made by those skilled in the art will not depart from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of this application. The scope of this application is determined by the scope of the claims.

Claims

1. A device wake-up method, characterized in that, include: Receives a radio frequency wake-up signal sent by a radio frequency device, wherein the radio frequency wake-up signal comprises a plurality of pulses distributed at intervals; The radio frequency wake-up signal is rectified and filtered by a passive envelope detector circuit to obtain the envelope signal. When the pulse interval of the envelope signal matches the time constant of the time feature detection circuit, the target device is triggered to enter the wake-up state. The time feature detection circuit includes a matching detection circuit based on the time constant formed by resistance and capacitance.

2. The device wake-up method according to claim 1, characterized in that, The time feature detection circuit also includes a multi-stage charge pump circuit, and the triggering of the target device to enter the wake-up state includes: The envelope signal drives the multi-stage charge pump circuit to perform stage-by-stage voltage accumulation, so as to form a final stage voltage in the final stage charge pump circuit. When the final stage voltage reaches a preset wake-up voltage threshold, the target device is brought into a wake-up state.

3. The device wake-up method according to claim 2, characterized in that, The charge pump circuit includes an energy storage capacitor and a unidirectional diode.

4. The device wake-up method according to claim 2, characterized in that, The step of driving the multi-stage charge pump circuit to perform stage-by-stage voltage accumulation via the envelope signal includes: When the pulse width of the envelope signal is within a preset pulse width range, the pulse of the envelope signal charges the energy storage capacitor in the charge pump circuit, thereby driving the multi-stage charge pump circuit to perform stage-by-stage voltage accumulation.

5. The device wake-up method according to claim 2, characterized in that, The matching detection circuit is provided between adjacent charge pump circuits, and the step of driving multiple stages of charge pump circuits to perform stage-by-stage voltage accumulation through the envelope signal includes: The envelope signal drives the front-end charge pump circuit to accumulate voltage, thereby obtaining a first voltage. The first voltage is delayed and transmitted by a matching detection circuit connected to the preceding charge pump circuit to obtain a second voltage. The second voltage is input to the subsequent charge pump circuit for voltage accumulation, so as to form a step-by-step voltage accumulation between the multi-stage charge pump circuits.

6. The device wake-up method according to claim 2, characterized in that, The step of putting the target device into a wake-up state includes: Connect the power supply path to the target device; The power supply path provides operating power to the control circuit of the target device.

7. The device wake-up method according to claim 2, characterized in that, The device wake-up method further includes: If the pulse interval of the envelope signal does not match the time constant of the time feature detection circuit, the voltage in the charge pump circuit is discharged through the matching detection circuit.

8. A device wake-up device, characterized in that, include: The receiving module is configured to receive a radio frequency wake-up signal sent by a radio frequency device, the radio frequency wake-up signal comprising a plurality of spaced pulses; The detection module is configured to rectify and filter the radio frequency wake-up signal through a passive envelope detection circuit to obtain an envelope signal. The wake-up module is configured to trigger the target device to enter a wake-up state when the pulse interval of the envelope signal matches the time constant of the time feature detection circuit, wherein the time feature detection circuit includes a matching detection circuit based on the time constant formed by resistance and capacitance.

9. A device wake-up device, characterized in that, include: One or more processors; A memory that stores one or more programs, which, when executed by one or more processors, cause the one or more processors to implement the device wake-up method as described in any one of claims 1-7.

10. A storage medium containing computer-executable instructions, characterized in that, The computer-executable instructions, when executed by a computer processor, are used to perform the device wake-up method as described in any one of claims 1-7.

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