Cascade wake-up circuit and equipment

Abstract

The invention discloses a cascade wake-up circuit and equipment, the cascade wake-up circuit comprises at least two wake-up circuits which are respectively and correspondingly arranged in at least two to-be-awakened equipment, the at least two wake-up circuits are cascaded, and the wake-up circuits are powered by batteries in the corresponding to-be-awakened equipment; the wake-up circuit comprises a wake-up trigger module, a wake-up detection module and a main control module, the wake-up trigger module is connected with the main control module, the main control module is used for outputting a wake-up control signal, and the wake-up trigger module is used for conducting and outputting a wake-up signal according to the wake-up control signal; the wake-up detection module is connected with the wake-up trigger module and the main control module, the wake-up detection module is used for conducting and outputting a detection signal according to the wake-up signal, and the main control module is further used for determining that the to-be-awakened device is awakened according to the detection signal. The cascade wake-up circuit provided by the invention supports multi-device wake-up.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit design, and in particular to a cascade wake-up circuit and device. Background Art

[0002] In the field of industrial communication and control, more and more devices will carry batteries, such as underground mining communication equipment. Due to the limited battery power, devices carrying batteries need to consider low power consumption design.

[0003] One of the main directions of low-power design is to put the device into sleep mode in standby mode, turn off unnecessary peripherals to reduce power consumption as much as possible, and wake up the device when it needs to work. At present, the wake-up circuit is generally a single-device wake-up circuit, including multiple wake-up input signals, that is, multiple wake-up input signals wake up one device, which is not suitable for scenarios where multiple devices are woken up. Summary of the invention

[0004] The present invention provides a cascade wake-up circuit and a device to solve the problem that the wake-up circuit in the prior art is not suitable for waking up multiple devices.

[0005] According to one aspect of the present invention, there is provided a cascade wake-up circuit, comprising at least two wake-up circuits, which are respectively arranged in at least two devices to be awakened, the at least two wake-up circuits are cascaded, and the wake-up circuits are powered by batteries in the corresponding devices to be awakened;

[0006] The wake-up circuit includes a wake-up trigger module, a wake-up detection module and a main control module, wherein the wake-up trigger module is connected to the main control module, the main control module is used to output a wake-up control signal, and the wake-up trigger module is used to conduct and output a wake-up signal according to the wake-up control signal;

[0007] The wake-up detection module is connected to the wake-up trigger module and the main control module. The wake-up detection module is used to conduct and output a detection signal according to the wake-up signal. The main control module is also used to determine that the device to be awakened is awakened according to the detection signal.

[0008] Optionally, the wake-up trigger module includes a first switch unit and a first pull-up unit, the first end of the first pull-up unit is connected to the battery of the device to be awakened, the second end of the first pull-up unit is connected to the first end of the first switch unit, and the first pull-up unit is used to pull up the voltage of the first end of the first switch unit; the second end of the first switch unit is connected to the output end of the main control module, the third end of the first switch unit is connected to the output end of the wake-up trigger circuit, the fourth end of the first switch unit is grounded, and the first switch unit is used to turn on according to the wake-up control signal output by the main control module and output the wake-up signal.

[0009] Optionally, the first switch unit includes a solid-state relay, a first end of the solid-state relay is connected to the first end of the first switch unit, a second end of the solid-state relay is connected to the second end of the first switch unit, a third end of the solid-state relay is connected to the third end of the first switch unit, and a fourth end of the solid-state relay is connected to the fourth end of the first switch unit.

[0010] Optionally, the first pull-up unit includes a first resistor, a first end of the first resistor is connected to a first end of the first pull-up unit, and a second end of the first resistor is connected to a second end of the first pull-up unit.

[0011] Optionally, the wake-up detection module includes a second pull-up unit and a second switch unit, the first end of the second pull-up unit is connected to the battery of the device to be awakened, the second end of the second pull-up unit is connected to the first end of the second switch unit and the main control module, and the first pull-up unit is used to pull up the voltage of the first end of the second switch unit; the second end of the second switch unit is connected to the input end of the wake-up detection module, the third end of the second switch unit is connected to the battery of the device to be awakened, and the fourth end of the second switch unit is grounded, and the second switch unit is used to turn on according to the wake-up signal and output the detection signal.

[0012] Optionally, the second pull-up unit includes a second resistor, a first end of the second resistor is connected to the first end of the second pull-up unit, and a second end of the second resistor is connected to the second end of the second pull-up unit.

[0013] Optionally, the second switch unit includes a photocoupler, a first end of the photocoupler is connected to the first end of the second switch unit, a second end of the photocoupler is connected to the second end of the second switch unit, a third end of the photocoupler is connected to the third end of the second switch unit, and a fourth end of the photocoupler is connected to the fourth end of the second switch unit.

[0014] Optionally, the wake-up detection module also includes an anti-interference unit and a third pull-up unit, the first end of the anti-interference unit is connected to the input end of the wake-up detection module, the second end of the anti-interference unit is connected to the second end of the second switch unit, and the anti-interference unit is used to filter out interference signals input into the wake-up detection module; the first end of the third pull-up unit is connected to the battery of the device to be awakened, the second end of the third pull-up unit is connected to the third end of the second switch unit, and the third pull-up unit is used to pull up the voltage of the third end of the second switch unit.

[0015] Optionally, the anti-interference unit includes a first diode and a second diode, the first end of the first diode is connected to the first end of the second diode and the first end of the anti-interference unit, the second end of the first diode is grounded, and the second end of the second diode is connected to the second end of the anti-interference unit; the third pull-up unit includes a third resistor, the first end of the third resistor is connected to the first end of the third pull-up unit, and the second end of the third resistor is connected to the second end of the third pull-up unit.

[0016] According to another aspect of the present invention, a device is provided, comprising the cascade wake-up circuit.

[0017] The technical solution of the embodiment of the present invention provides a cascade wake-up circuit, including at least two wake-up circuits, which are respectively arranged in at least two devices to be awakened, and the at least two wake-up circuits are cascaded, and the wake-up circuit is powered by the battery in the corresponding device to be awakened; the wake-up circuit includes a wake-up trigger module, a wake-up detection module and a main control module, the wake-up trigger module is connected to the main control module, the main control module is used to output a wake-up control signal, and the wake-up trigger module is used to conduct and output a wake-up signal according to the wake-up control signal; the wake-up detection module is connected to the wake-up trigger module and the main control module, the wake-up detection module is used to conduct and output a detection signal according to the wake-up signal, and the main control module is also used to determine that the device to be awakened is awakened according to the detection signal. Since multiple wake-up circuits are cascaded, when the wake-up circuit in any device to be awakened outputs a wake-up signal, multiple devices to be awakened with multiple wake-up circuits are awakened at the same time, which solves the problem that the wake-up circuit in the prior art is not suitable for multiple device wake-up.

[0018] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a circuit diagram of a wake-up circuit provided in the related art;

[0021] Figure 2 It is a circuit diagram of a wake-up circuit provided in the related art;

[0022] Figure 3is a structural diagram of a cascade wake-up circuit provided by an embodiment of the present invention;

[0023] Figure 4 It is a circuit diagram of a cascade wake-up circuit provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] In the field of industrial communication and control, more and more devices will carry batteries, such as underground mining communication equipment. However, due to the limited battery power, devices carrying batteries need to consider low-power design. One of the main directions of low-power design is to put the device into sleep mode in standby mode, turn off unnecessary peripherals to minimize power consumption, wake up the device when it needs to work, and enter a low-power state immediately after work. Figure 1 is a circuit diagram of a wake-up circuit provided in the related art, such as Figure 1 As shown, a multi-channel trigger wake-up circuit is constructed based on MOS tube Q, resistor R, and capacitor C, and also includes a power supply V. The wake-up switch is composed of an NMOS tube, and an RC delay circuit is added to the gate; each trigger gear is composed of a PMOS tube, and the gate is grounded through a pull-down resistor and is turned on by default; by controlling the conduction and shutdown of the PMOS tube, the conduction of the wake-up switch NMOS tube is controlled to achieve the purpose of multi-input wake-up. Figure 2 is a circuit diagram of a wake-up circuit provided in the related art, such as Figure 2As shown, a multi-mode wake-up circuit is provided. The wake-up switch is composed of an optocoupler U0, and the wake-up trigger circuit is composed of an NPN transistor switch circuit, a PNP transistor switch circuit, and a wake-up control signal in parallel. The three wake-up trigger circuits can trigger the action of the optocoupler. The transistor is represented by Q, the resistor is represented by R, the diode is represented by D, and the power supply is represented by V. The above two wake-up circuits are both multi-wake-up signal input, single-device wake-up circuits, and are not suitable for scenarios that require multiple wake-up inputs and multi-device wake-up circuits. In addition, in the first wake-up circuit, there is no isolation between the wake-up signal and the awakened device, and the anti-interference ability is poor.

[0027] To solve the above problems, an embodiment of the present invention provides a cascade wake-up circuit. Figure 3 is a structural diagram of a cascade wake-up circuit provided by an embodiment of the present invention, such as Figure 3 As shown, the cascade wake-up circuit includes at least two wake-up circuits 100, which are respectively arranged in at least two devices to be awakened, and the at least two wake-up circuits 100 are cascaded, and the wake-up circuit 100 is powered by a battery in the corresponding device to be awakened; the wake-up circuit 100 includes a wake-up trigger module 110, a wake-up detection module 120 and a main control module 130, the wake-up trigger module 110 is connected to the main control module 130, the main control module 130 is used to output a wake-up control signal, and the wake-up trigger module 110 is used to turn on and output a wake-up signal according to the wake-up control signal; the wake-up detection module 120 is connected to the wake-up trigger module 110 and the main control module 130, the wake-up detection module 120 is used to turn on and output a detection signal according to the wake-up signal, and the main control module 130 is also used to determine that the device to be awakened is awakened according to the detection signal.

[0028] In this embodiment, the wake-up circuit 100 is a circuit that outputs a wake-up signal to wake up a device in a dormant state. The device to be awakened is a device with a battery. The batteries in the multiple devices to be awakened are independent of each other, which can avoid affecting the awakening of the device to be awakened due to the failure of one of the wake-up circuits. For example, the battery in the first device to be awakened is represented by BAT1, the battery in the second device to be awakened is represented by BAT2, and the battery in the nth device to be awakened is represented by BATn. The wake-up trigger module 110 is a module for waking up the device to be awakened, the wake-up detection module 120 is a module for detecting the wake-up signal (i.e. being awakened), and the main control module 130 is a module for processing the input signal and generating a corresponding output signal according to a preset control strategy or algorithm. For example, the main control module 130 includes a microcontroller.

[0029] In this embodiment, the main control module 130 outputs a wake-up control signal according to the input operation instruction, for example, the wake-up control signal is a low-level signal, the wake-up trigger module 110 is turned on and outputs a wake-up signal according to the wake-up control signal, wherein the wake-up signal is a low-level signal, the wake-up detection module 120 is turned on and outputs a detection signal according to the wake-up signal, wherein the detection signal is a low-level signal, and the main control module 130 detects that the device to be awakened is awakened according to the received detection signal. Since multiple wake-up circuits are cascaded, correspondingly, the main control module 130 in multiple devices to be awakened detects that the device to be awakened is awakened.

[0030] The technical solution of this embodiment provides a cascade wake-up circuit, including at least two wake-up circuits, which are respectively arranged in at least two devices to be awakened, and at least two wake-up circuits are cascaded, and the wake-up circuit is powered by the battery in the corresponding device to be awakened; the wake-up circuit includes a wake-up trigger module, a wake-up detection module and a main control module, the wake-up trigger module is connected to the main control module, the main control module is used to output a wake-up control signal, and the wake-up trigger module is used to conduct and output a wake-up signal according to the wake-up control signal; the wake-up detection module is connected to the wake-up trigger module and the main control module, the wake-up detection module is used to conduct and output a detection signal according to the wake-up signal, and the main control module is also used to determine that the device to be awakened is awakened according to the detection signal. Since multiple wake-up circuits are cascaded, when the wake-up circuit in any device to be awakened outputs a wake-up signal, multiple devices to be awakened with multiple wake-up circuits are awakened at the same time, which solves the problem that the wake-up circuit in the prior art is not suitable for multiple device wake-up.

[0031] For example, Figure 4 is a circuit diagram of a cascade wake-up circuit provided by an embodiment of the present invention, such as Figure 4 As shown, the three wake-up circuits are respectively arranged in the three devices to be awakened, and the wake-up trigger module 110 includes a first switch unit and a first pull-up unit. The first end of the first pull-up unit is connected to the battery of the device to be awakened, and the second end of the first pull-up unit is connected to the first end of the first switch unit. The first pull-up unit is used to pull up the voltage of the first end of the first switch unit; the second end of the first switch unit is connected to the output end of the main control module 130, the third end of the first switch unit is connected to the output end of the wake-up trigger circuit 110, and the fourth end of the first switch unit is grounded. The first switch unit is used to be turned on according to the wake-up control signal output by the main control module 130, and output a wake-up signal.

[0032] In this embodiment, the three devices to be awakened are respectively a first device to be awakened, a second device to be awakened, and a third device to be awakened. The awakening circuit in the first device to be awakened is powered by battery BAT1, the awakening circuit in the second device to be awakened is powered by battery BAT2, and the awakening circuit in the third device to be awakened is powered by battery BAT3. Taking the awakening circuit in the first device to be awakened as an example, the first pull-up unit is connected to the battery BAT1 to pull up the voltage at the first terminal of the first switch unit to a high-level signal. On the basis of the above embodiment, the awakening control signal output by the main control module 130 is a low-level signal, and the first switch unit is turned on and outputs a wake-up signal, wherein the wake-up signal is a low-level signal.

[0033] Specifically, the first switch unit includes a solid-state relay U1, a first end of the solid-state relay U1 is connected to a first end of the first switch unit, a second end of the solid-state relay U1 is connected to a second end of the first switch unit, a third end of the solid-state relay U1 is connected to a third end of the first switch unit, and a fourth end of the solid-state relay U1 is connected to a fourth end of the first switch unit. The first pull-up unit includes a first resistor R1, a first end of the first resistor R1 is connected to a first end of the first pull-up unit, and a second end of the first resistor is connected to a second end of the first pull-up unit.

[0034] On the basis of the above embodiment, the voltage of the first end of the first switch unit (i.e., the first end of the solid-state relay U1) is a high-level signal. When the wake-up control signal output by the main control module 130 is a low-level signal, the first and second ends of the solid-state relay U1 are turned on. At this time, the third and fourth ends of the solid-state relay U1 are turned on, and the fourth end of the solid-state relay U1 outputs the wake-up signal. Among them, a light-emitting diode is connected between the first and second ends of the solid-state relay U1, which is the input control end, and the third and fourth ends of the solid-state relay U1 are the output load ends. The solid-state relay is a new type of contactless switch device composed entirely of solid-state electronic components. An isolation device is used to achieve isolation between the input control end and the output load end, improve the anti-interference ability, and solve the problem of poor anti-interference ability of the wake-up circuit in the prior art.

[0035] Continue to refer Figure 4 The wake-up detection module 120 includes a second pull-up unit and a second switch unit. The first end of the second pull-up unit is connected to the battery of the device to be awakened, and the second end of the second pull-up unit is connected to the first end of the second switch unit and the main control module 130. The first pull-up unit is used to pull up the voltage of the first end of the second switch unit; the second end of the second switch unit is connected to the input end of the wake-up detection module 120, the third end of the second switch unit is connected to the battery of the device to be awakened, and the fourth end of the second switch unit is grounded. The second switch unit is used to be turned on according to the wake-up signal and output a detection signal.

[0036] Referring to the above embodiment, taking the wake-up circuit in the first device to be awakened as an example, the second pull-up unit is connected to the battery BAT1 to pull up the first terminal voltage of the second switch unit to a high-level signal. When the wake-up detection module 120 does not receive the wake-up signal, the second switch unit is in an off state, and the wake-up detection module 120 outputs the high-level signal to the main control module 130. When the wake-up detection module 120 receives the wake-up signal, the second switch unit is turned on and outputs a low-level signal (i.e., a detection signal). The main control module 130 determines that the device to be awakened is awakened based on the received detection signal.

[0037] Specifically, the second pull-up unit includes a second resistor R2, a first end of the second resistor R2 is connected to the first end of the second pull-up unit, and a second end of the second resistor R2 is connected to the second end of the second pull-up unit. The second switch unit includes a photoelectric coupler U2, a first end of the photoelectric coupler U2 is connected to the first end of the second switch unit, a second end of the photoelectric coupler U2 is connected to the second end of the second switch unit, a third end of the photoelectric coupler U2 is connected to the third end of the second switch unit, and a fourth end of the photoelectric coupler U2 is connected to the fourth end of the second switch unit.

[0038] On the basis of the above embodiment, when the wake-up detection module 120 does not receive the wake-up signal, the photocoupler U2 is in the off state, and the photocoupler U2 outputs a high-level signal to the main control module 130. When the wake-up detection module 120 receives the wake-up signal, since the third end of the photocoupler U2 is connected to the battery BAT1 of the device to be awakened, and the wake-up signal is a low-level signal, the light-emitting diode connected between the second end and the third end of the photocoupler U2 is turned on. At this time, the first end and the fourth end of the photocoupler U2 are turned on, and the photocoupler U2 outputs a low-level signal to the main control module 130. The main control module 130 determines that the device to be awakened is awakened according to the received detection signal. Among them, the photocoupler U2 transmits electrical signals using light as a medium, and has a good isolation effect on input and output signals.

[0039] Continue to refer Figure 4 The wake-up detection module 120 also includes an anti-interference unit and a third pull-up unit, wherein a first end of the anti-interference unit is connected to the input end of the wake-up detection module 120, a second end of the anti-interference unit is connected to the second end of the second switch unit, and the anti-interference unit is used to filter out interference signals input to the wake-up detection module 120; a first end of the third pull-up unit is connected to the battery of the device to be awakened, a second end of the third pull-up unit is connected to the third end of the second switch unit, and the third pull-up unit is used to pull up the voltage of the third end of the second switch unit.

[0040] In this embodiment, the anti-interference unit is a unit for filtering out interference signals, which can improve the stability of the circuit, and the third pull-up unit pulls up the voltage of the third end of the second switch unit (the third end of the photocoupler U2) to a high level signal. When the wake-up trigger module 110 outputs a wake-up signal to the wake-up detection module 120, the anti-interference unit performs anti-interference processing on the input wake-up signal, and transmits the processed wake-up signal to the second switch unit, and the second switch unit is turned on and outputs a detection signal.

[0041] Specifically, the anti-interference unit includes a first diode D1 and a second diode D2, wherein the first end of the first diode D1 is connected to the first end of the second diode D2 and the first end of the anti-interference unit, the second end of the first diode D1 is grounded, and the second end of the second diode D2 is connected to the second end of the anti-interference unit; the third pull-up unit includes a third resistor R3, wherein the first end of the third resistor R3 is connected to the first end of the third pull-up unit, and the second end of the third resistor R3 is connected to the second end of the third pull-up unit. The wake-up detection module 120 also includes a first capacitor C1, wherein the function of the first diode D1 is to prevent surges and pulses in the wake-up signal from damaging the subsequent circuit, and the function of the second diode D2 is to ensure that the current is unidirectionally conducted to prevent current backflow.

[0042] Based on the above embodiment, the first device to be awakened, the second device to be awakened and the third device to be awakened share a wake-up line WAKEUP (outputting a wake-up signal), and the first device to be awakened, the second device to be awakened and the third device to be awakened share a common ground. On the basis of the above embodiments, when the device to be awakened is in sleep mode, the voltage of the wake-up line WAKEUP is equal to the voltage of the battery with the highest voltage after the voltage of the batteries connected to the device to be awakened is subtracted from the voltage drop of the photocoupler U2 and the second diode D2. The wake-up circuit is analyzed by taking the first device to be awakened as an example. At this time, the voltage of the first end (negative pole) of the second diode D2 in the wake-up detection module 120 is equal to the voltage on the wake-up line WAKEUP, and the voltage of the second end (positive pole) of the second diode D2 is equal to the voltage of the battery BAT1 minus the voltage drop of the photocoupler U2. The negative pole voltage of the second diode D2 is greater than or equal to the positive pole voltage of the second diode D2, so the photocoupler U2 will not be turned on, the detection signal is a high level, and the main control module 130 determines that the first device to be awakened will not be awakened; when the voltage of the wake-up line WAKEUP is pulled down to GND (low level signal), the positive pole voltage of the second diode D2 is greater than the negative pole voltage, and the photocoupler U2 is triggered. At this time, the detection signal is a low level signal, and the main control module 130 determines that the first device to be awakened is awakened. When the first device to be awakened needs to wake up other devices, the main control module 130 outputs a wake-up control signal. At this time, the solid-state relay U1 is triggered, the positive and negative poles of the control end are connected, the wake-up line WAKEUP voltage is a low-level signal, and the wake-up detection modules of all devices to be awakened are triggered. All devices to be awakened are awakened, which solves the problem that the wake-up circuit in the prior art is not suitable for multiple device wake-up.

[0043] An embodiment of the present invention further provides a device. The device provided by this embodiment includes the cascade wake-up circuit provided by the above embodiment, and has the beneficial effects of the cascade wake-up circuit provided by the above embodiment, which will not be described in detail here.

[0044] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0045] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cascade wake-up circuit, characterized in that: It comprises at least two wake-up circuits, which are respectively arranged in at least two devices to be awakened, the at least two wake-up circuits are cascaded, and the wake-up circuits are powered by batteries in the corresponding devices to be awakened; The wake-up circuit includes a wake-up trigger module, a wake-up detection module and a main control module, wherein the wake-up trigger module is connected to the main control module, the main control module is used to output a wake-up control signal, and the wake-up trigger module is used to conduct and output a wake-up signal according to the wake-up control signal; The wake-up detection module is connected to the wake-up trigger module and the main control module. The wake-up detection module is used to conduct and output a detection signal according to the wake-up signal. The main control module is also used to determine that the device to be awakened is awakened according to the detection signal.

2. The cascade wake-up circuit according to claim 1, characterized in that: The wake-up trigger module includes a first switch unit and a first pull-up unit, the first end of the first pull-up unit is connected to the battery of the device to be awakened, the second end of the first pull-up unit is connected to the first end of the first switch unit, and the first pull-up unit is used to pull up the voltage of the first end of the first switch unit; the second end of the first switch unit is connected to the output end of the main control module, the third end of the first switch unit is connected to the output end of the wake-up trigger circuit, the fourth end of the first switch unit is grounded, and the first switch unit is used to be turned on according to the wake-up control signal output by the main control module, and output the wake-up signal.

3. The cascade wake-up circuit according to claim 2, characterized in that: The first switch unit includes a solid-state relay, a first end of the solid-state relay is connected to the first end of the first switch unit, a second end of the solid-state relay is connected to the second end of the first switch unit, a third end of the solid-state relay is connected to the third end of the first switch unit, and a fourth end of the solid-state relay is connected to the fourth end of the first switch unit.

4. The cascade wake-up circuit according to claim 2, characterized in that: The first pull-up unit includes a first resistor, a first end of the first resistor is connected to a first end of the first pull-up unit, and a second end of the first resistor is connected to a second end of the first pull-up unit.

5. The cascade wake-up circuit according to claim 1, characterized in that: The wake-up detection module includes a second pull-up unit and a second switch unit, the first end of the second pull-up unit is connected to the battery of the device to be awakened, the second end of the second pull-up unit is connected to the first end of the second switch unit and the main control module, the first pull-up unit is used to pull up the voltage of the first end of the second switch unit; the second end of the second switch unit is connected to the input end of the wake-up detection module, the third end of the second switch unit is connected to the battery of the device to be awakened, the fourth end of the second switch unit is grounded, and the second switch unit is used to turn on according to the wake-up signal and output the detection signal.

6. The cascade wake-up circuit according to claim 5, characterized in that: The second pull-up unit includes a second resistor, a first end of the second resistor is connected to the first end of the second pull-up unit, and a second end of the second resistor is connected to the second end of the second pull-up unit.

7. The cascade wake-up circuit according to claim 5, characterized in that: The second switch unit includes a photocoupler, a first end of the photocoupler is connected to the first end of the second switch unit, a second end of the photocoupler is connected to the second end of the second switch unit, a third end of the photocoupler is connected to the third end of the second switch unit, and a fourth end of the photocoupler is connected to the fourth end of the second switch unit.

8. The cascade wake-up circuit according to claim 5, characterized in that: The wake-up detection module also includes an anti-interference unit and a third pull-up unit, wherein a first end of the anti-interference unit is connected to an input end of the wake-up detection module, a second end of the anti-interference unit is connected to a second end of the second switch unit, and the anti-interference unit is used to filter out interference signals input to the wake-up detection module; a first end of the third pull-up unit is connected to a battery of the device to be awakened, a second end of the third pull-up unit is connected to a third end of the second switch unit, and the third pull-up unit is used to pull up a voltage at the third end of the second switch unit.

9. The cascade wake-up circuit according to claim 8, characterized in that: The anti-interference unit includes a first diode and a second diode, the first end of the first diode is connected to the first end of the second diode and the first end of the anti-interference unit, the second end of the first diode is grounded, and the second end of the second diode is connected to the second end of the anti-interference unit; the third pull-up unit includes a third resistor, the first end of the third resistor is connected to the first end of the third pull-up unit, and the second end of the third resistor is connected to the second end of the third pull-up unit.

10. A device, characterized in that: The invention comprises the cascade wake-up circuit described in claims 1 to 9.

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