CN112918408B - Wake-up circuit and vehicle - Google Patents
Wake-up circuit and vehicle Download PDFInfo
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- CN112918408B CN112918408B CN202110174444.7A CN202110174444A CN112918408B CN 112918408 B CN112918408 B CN 112918408B CN 202110174444 A CN202110174444 A CN 202110174444A CN 112918408 B CN112918408 B CN 112918408B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
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Abstract
The invention discloses a wake-up circuit, which comprises a plurality of wake-up sources and a control circuit, wherein the control circuit is provided with a plurality of input ends and an output end, the input ends are respectively connected with the wake-up sources in a one-to-one correspondence mode, and the output end is connected with a device to be woken up. Therefore, the wake-up circuit in the application does not need to be provided with a plurality of wake-up channels, any one wake-up source can be input into the control circuit to wake up the device to be woken up, and the device to be woken up is enabled to enter a sleep state when the wake-up source is not input, so that the power consumption is reduced. The invention also discloses a vehicle which has the same beneficial effect as the wake-up circuit.
Description
Technical Field
The invention relates to the field of automobile control, in particular to a wake-up circuit and a vehicle.
Background
There are multiple electrical apparatus module in the car, for example the door, generally be in the sleep state when electrical apparatus module is out of work, awaken it when needing its work to reduce the power consumption of each electrical apparatus module in the car, increase the duration of a journey ability of car, for example, when the door is in the closed condition, the door is in the sleep state, when the user opened the door through the handle that pulls the door from in the car or the car outside, for awakening up the door, the door is the device of waiting to awaken up, the handle outside the car or the handle in the door are awaken up the source.
In the prior art, one wake-up source occupies one wake-up channel to wake up a device to be woken up, multiple wake-up channels are needed when the number of wake-up sources is large, multiple wake-up ports need to be set up respectively, the number of wake-up ports to be woken up of the device to be woken up is small, multiple wake-up channels cannot be connected to one wake-up port, and the wake-up channels are generally arranged in a chip, the more chip cost of the wake-up channels is higher, and therefore, the problem that urgent need to be solved is to set up a wake-up channel which can be adapted to multiple wake-up sources.
Disclosure of Invention
The invention aims to provide a wake-up circuit and a vehicle, wherein a plurality of wake-up channels are not required to be arranged, any one wake-up source is input into a control circuit to wake up a device to be woken up, and the device to be woken up enters a sleep state when the wake-up source is not input, so that the power consumption is reduced.
To solve the above technical problem, the present invention provides a wake-up circuit, including:
a plurality of wake-up sources;
the control circuit comprises a plurality of input ends and an output end, wherein the plurality of input ends are respectively connected with the plurality of awakening sources in a one-to-one correspondence mode, the output end of the control circuit is connected with an awakening port of the device to be awakened, and the control circuit is used for outputting an awakening signal when receiving any one of the awakening sources and outputting a sleep signal after preset time.
Preferably, the control circuit includes:
the single-steady-state circuit comprises a plurality of input ends, the input ends of the input ends are respectively in one-to-one correspondence with the input ends of the control circuit, and the single-steady-state circuit is used for outputting a first level when any one awakening source input is received and outputting a second level after preset time, and the first level and the second level are opposite levels;
the input end of the digital switch module is connected with the output end of the monostable circuit, the output end of the digital switch module is connected with the output end of the control circuit and the awakening port of the device to be awakened, and the digital switch module is used for outputting the awakening signal when the monostable circuit outputs the first level and outputting the sleep signal when the monostable circuit outputs the second level.
Preferably, the monostable circuit includes:
the wake-up switch module is used for being conducted when any one wake-up source input is received so as to ground the first end of the first capacitor;
the first capacitor with a second end connected with the first end of the first resistor is used for starting charging when the wake-up switch module is switched on and is fully charged after the preset time;
the second end of the first resistor is used for controlling the charging time of the first capacitor, and the output end of the monostable circuit is connected with the input end of the digital switch module;
the second end of the first resistor is at a low level when the first capacitor starts to charge, so that the monostable circuit outputs the first level; the second end of the first resistor is at a high level after the first capacitor is fully charged, so that the monostable circuit outputs the second level;
the first pull-up resistor is connected with the first power supply module at a first end and used for clamping the first end of the first capacitor at a high level when the wake-up switch module is not conducted;
the first power supply module is used for providing high level for the first capacitor.
Preferably, the wake-up switch module includes a plurality of wake-up switches, control terminals of the wake-up switches are respectively one-to-one corresponding to control terminals of the wake-up switch module, and any one of the wake-up switches is turned on when a wake-up source corresponding to the wake-up switch module is input, so as to ground the first terminal of the first capacitor; the first end of each wake-up switch is connected with the first power supply module through one first pull-up resistor, and the second end of each wake-up switch is grounded;
and one first capacitor is arranged between the first end of each wake-up switch and the first end of the first resistor.
Preferably, the digital switch module includes:
the control end is a first switching tube, the input end of the digital switching module is connected with the output end of the monostable circuit, the first end of the digital switching tube is connected with the second power module, the second end of the digital switching tube is connected with the first end of the second resistor, and the first switching tube is used for conducting when the control end of the first switching tube inputs a low level;
the first protection resistor is used for ensuring the cut-off state of the first switching tube, and the first protection resistor is connected with the first end of the first switching tube at the first end and connected with the control end of the first switching tube at the second end;
the control end is connected with the second end of the second resistor, the first end is connected with the second end of the second pull-up resistor and is the output end of the digital switch module, and the second switch tube with the grounded second end is used for being conducted when the control end of the second switch tube inputs a high level, so that the output end of the digital switch module outputs a low level, namely the digital switch module outputs the wake-up signal;
the first end of the first protection resistor is connected with the control end of the first switching tube, and the second end of the first protection resistor is connected with the first end of the first switching tube;
the second resistor is used for limiting the current input to the control end of the second switching tube;
the second pull-up resistor is connected with the second power supply module at a first end and used for clamping the output end of the digital switch module at a high level when the monostable circuit outputs the high level;
the second power module is used for providing a high level for the first switch tube, the second switch tube and the output end of the digital switch module.
Preferably, the monostable circuit further comprises:
the first capacitor is used for charging when the second end of the first resistor is at a high level and the wake-up switch module is disconnected, so that the control end of the second switch tube inputs the high level and the digital switch module outputs the wake-up signal;
and the third resistor is connected with the control end of the second switch tube at the second end and is used for prolonging the charging time of the second capacitor.
Preferably, one second capacitor is arranged between the first end of each wake-up switch and the first end of the third resistor.
Preferably, the digital switch module further comprises:
the first filter capacitor is used for filtering noise waves input to the first switch tube, and the first end of the first filter capacitor is connected with the first end of the first switch tube;
the first end is connected with the first end of the second switch tube, and the second end is connected with the second filter capacitor connected with the control end of the second switch tube, and is used for filtering noise waves input to the second switch tube.
In order to solve the technical problem, the invention provides a vehicle comprising the wake-up circuit.
The application provides a wake-up circuit, including a plurality of sources of awaking up to and have a plurality of inputs and an output and a plurality of inputs respectively the one-to-one be connected with a plurality of sources of awaking up, the output with treat the control circuit that the wake-up device is connected, wherein, when receiving the input of the arbitrary source of awaking up in a plurality of sources of awaking up, control circuit all can export the wake-up signal, will treat the wake-up device and awaken up, and export the sleep signal after the predetermined time, make and treat the wake-up device and get into sleep state again. Therefore, the wake-up circuit in the application does not need to be provided with a plurality of wake-up channels, any one wake-up source can be input into the control circuit to wake up the device to be woken up, and the device to be woken up is enabled to enter a sleep state when the wake-up source is not input, so that the power consumption is reduced.
The application also discloses a vehicle, which has the same beneficial effect as the wake-up circuit.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a wake-up circuit according to the present invention;
FIG. 2 is a diagram illustrating a wake-up circuit according to the prior art;
fig. 3 is a schematic diagram of a specific structure of a control circuit in the wake-up circuit according to the present invention.
Detailed Description
The core of the invention is to provide the wake-up circuit and the vehicle, a plurality of wake-up channels are not required to be arranged, any one wake-up source is input into the control circuit to wake up the device to be woken up, and the device to be woken up is in a sleep state when the wake-up source is not input, so that the power consumption is reduced.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a wake-up circuit according to the present invention.
The circuit includes:
a plurality of wake-up sources 1;
the control circuit 2 comprises a plurality of input ends and an output end, wherein the input ends are respectively connected with the plurality of awakening sources 1 in a one-to-one correspondence mode, the output end of the control circuit 2 is connected with an awakening port of the device 3 to be awakened, and the control circuit is used for outputting an awakening signal when receiving the input of any one awakening source 1 and outputting a sleep signal after a preset time.
In this embodiment, in view of that, in the prior art, a plurality of wake-up sources 1 can wake up a device to be woken up 3, and the wake-up sources 1 wake up the device to be woken up 3 through wake-up channels, but each wake-up source 1 needs to occupy one wake-up channel, and each wake-up channel needs to be connected to one wake-up port of the device to be woken up 3, please refer to fig. 2, fig. 2 is a schematic structural diagram of a wake-up circuit in the prior art, and when the number of wake-up ports of the device to be woken up 3 is small, a plurality of wake-up channels cannot be connected to one wake-up port, that is, each wake-up source 1 cannot wake up the device to be woken up 3.
In order to solve the technical problem, the wake-up circuit in the present application includes a plurality of wake-up sources 1, and has a plurality of inputs and an output and a plurality of inputs are respectively connected with a plurality of wake-up sources 1 in a one-to-one correspondence, the output is connected with control circuit 2 that waits to wake-up device 3 and connect, when arbitrary one wake-up source 1 is input, control circuit 2 all can output wake-up signal, thereby will wait to wake-up device 3 and wake-up, and output sleep signal after the preset time of output wake-up signal, make and wait to wake-up device 3 and get into sleep state, thereby reduce the loss.
When the device 3 to be awakened is an automobile door, the awakening source 1 may be an automobile door handle on the inner side of the automobile door or an automobile door handle on the outer side of the automobile door, and when a user pulls any one of the automobile door handles, the automobile door handle can be used as the awakening source 1 to output a signal to the control circuit 2, and the control circuit 2 has an input of the awakening source 1, so that the awakening signal is output to awaken the automobile door and open or close the automobile door.
In addition, the control circuit 2 outputs a sleep signal after outputting the wake-up signal and a preset time, and at this time, if there is an input of another wake-up source 1, the control circuit 2 outputs the wake-up signal again. It can be seen that, after a certain wake-up source 1 inputs, the control circuit 2 outputs a sleep signal after a preset time, which does not affect the input of other wake-up sources 1, that is, each wake-up source 1 does not occupy the wake-up channel formed by the control circuit 2, and thus, the wake-up of the device to be woken up 3 by the wake-up sources 1 through one wake-up channel can be realized.
In summary, the wake-up circuit in the present application does not need to set a plurality of wake-up channels, and any one wake-up source 1 is input into the control circuit 2 to wake up the device to be woken up 3, and the device to be woken up 3 enters a sleep state when there is no wake-up source 1 input, thereby reducing power consumption.
On the basis of the above-described embodiment:
as a preferred embodiment, the control circuit 2 includes:
the single-stable circuit comprises a plurality of input ends, wherein the input ends of the single-stable circuit are respectively one-to-one corresponding to the input ends of the control circuit 2, and is used for outputting a first level when any one awakening source 1 input is received and outputting a second level after a preset time, and the first level and the second level are opposite levels;
the input end of the digital switch module is connected with the output end of the monostable circuit, the output end of the digital switch module is connected with the output end of the control circuit 2 and the awakening port of the device to be awakened 3, and the digital switch module is used for outputting an awakening signal when the monostable circuit outputs a first level and outputting a sleep signal when the monostable circuit outputs a second level.
In this embodiment, the control circuit 2 is provided with a monostable circuit and a digital switch module, when any one of the wake-up sources 1 is input, the monostable circuit outputs a first level and outputs a second level opposite to the first level after a preset time, the digital switch module outputs a wake-up signal when the monostable circuit outputs the first level, the device 3 to be woken up is woken up, and when the monostable circuit outputs the second level, a sleep signal is output, so that the device 3 to be woken up enters a sleep state, and loss is reduced.
It should be noted that a capacitor is arranged in the monostable circuit, and the preset time is the time from when the monostable circuit outputs the first level to when the capacitor is fully charged or discharged correspondingly.
As a preferred embodiment, the monostable circuit comprises:
the wake-up switch module K is connected with the second end of the first pull-up resistor RL1 and the first end of the first capacitor C1, and the second end of the wake-up switch module K is grounded and used for being conducted when any one wake-up source 1 input is received so as to ground the first end of the first capacitor C1;
the first capacitor C1 is used for starting charging when the wake-up switch module K is switched on and is fully charged after a preset time;
the second end is a first resistor R1 which is connected with the output end of the monostable circuit and the input end of the digital switch module and is used for controlling the charging time of the first capacitor;
the second end of the first resistor R1 is at a low level when the first capacitor C1 starts to charge, so that the monostable circuit outputs a first level; the second end of the first resistor R1 is at a high level after the first capacitor C1 is fully charged, so that the monostable circuit outputs a second level;
the first pull-up resistor RL1 is connected with the first power module at a first end and is used for clamping the first end of the first capacitor C1 at a high level when the wake-up switch module K is not conducted;
the first power module is used for providing high level for the first capacitor C1.
Referring to fig. 3, fig. 3 is a schematic diagram of a specific structure of a control circuit in the wake-up circuit provided by the present invention.
In this embodiment, the monostable circuit is provided with a wake-up switch module K, the wake-up switch module K includes a plurality of control ends, and each control end is respectively connected to one wake-up source 1 in a one-to-one correspondence manner, because the first end of the first capacitor C1 is connected to the first power module through the first pull-up resistor RL1 when there is no wake-up source 1 input, the first capacitor C1 is at a high level at this time, and when any wake-up source 1 is input, the wake-up switch module K grounds the first end of the first capacitor C1, so that the first end of the first capacitor C1 is pulled down to a low level, the first capacitor C1 is charged, at this time, the second end of the first resistor R1 is also pulled down to a low level, because the second end of the first resistor R1 is an output end of the monostable circuit, the monostable circuit outputs the first level at this time, that is the first level, and the first level is a low level, the digital switch module outputs a wake-up signal, and after the first capacitor C1 is fully charged after a preset time, the device 3 to be wakened to enter a sleep state, thereby reducing energy consumption.
The charging time of the first capacitor C1 can be controlled by setting the resistance of the first resistor R1, that is, the preset time is adjusted.
As a preferred embodiment, the wake-up switch module K includes a plurality of wake-up switches, control terminals of the wake-up switches are respectively one-to-one corresponding to control terminals of the wake-up switch module K, and any one of the wake-up switches is turned on when the wake-up source 1 corresponding to the wake-up switch module K is input, so as to ground the first end of the first capacitor C1; the first end of each wake-up switch is connected with the first power module through a first pull-up resistor RL1, and the second end of each wake-up switch is grounded;
a first capacitor C1 is arranged between the first end of each wake-up switch and the first end of the first resistor R1.
In this embodiment, a plurality of wake-up switches are disposed in the wake-up switch module K, and control ends of the wake-up switches are respectively connected to one wake-up source 1 in a one-to-one correspondence manner, and are turned on when the wake-up source 1 corresponding to the wake-up switch module K is input to ground a first end of a first capacitor C1, and the first end of each wake-up switch is connected to a first capacitor C1, so as to ensure that when any one wake-up switch is turned on, the first capacitor C1 corresponding to the wake-up switch is charged, so that the monostable circuit outputs a low level; and after the corresponding first capacitors C1 are fully charged, the monostable circuit outputs high level after preset time, so that the awakening sources 1 can awaken the to-be-awakened device 3 conveniently.
As a preferred embodiment, the digital switch module comprises:
the control end is a first switching tube T1, the input end of the digital switching module is connected with the output end of the monostable circuit, the first end of the digital switching module is connected with the second power module, the second end of the digital switching module is connected with the first end of the second resistor R2, and the digital switching tube T1 is used for being conducted when the control end of the digital switching module inputs a low level;
the first protection resistor RT1 is connected with the first end of the first switching tube T1 at the first end, and is connected with the control end of the first switching tube T1 at the second end, and is used for ensuring the cut-off state of the first switching tube T1;
the control end is connected with the second end of the second resistor R2, the first end is connected with the second end of the second pull-up resistor RL2 and is the output end of the digital switch module, and the second switch tube T2 with the grounded second end is used for conducting when the control end of the second switch tube T2 inputs a high level so that the output end of the digital switch module outputs a low level, namely the digital switch module outputs a wake-up signal;
the first end of the second protection resistor RT2 is connected with the control end of the second switch tube T2, and the second end of the second protection resistor RT2 is connected with the first end of the second switch tube T2 and is used for ensuring the cut-off state of the second switch tube T2;
the second resistor R2 is used for limiting the current input to the control end of the second switching tube T2;
the second pull-up resistor RL2 is connected with the second power supply module at the first end and is used for clamping the output end of the digital switch module at a high level when the monostable circuit outputs the high level;
and the second power supply module is used for providing high level for the output ends of the first switch tube T1, the second switch tube T2 and the digital switch module.
In the digital switch module of the present embodiment, a first switch tube T1 and a second switch tube T2 are disposed, referring to fig. 3, the first switch tube T1 in fig. 3 is a PNP (Positive-Negative-Positive) switch tube, the second switch tube T2 is an NPN (Negative-Positive-Negative) switch tube, because a first end of the first switch tube T1 is connected to the second power module, a first end of the first switch tube T1 is at a high level, and when a first output end of the monostable circuit outputs the high level, the first switch tube T1 cannot be turned on; since the second end of the second switch tube T2 is grounded, the second end of the second switch tube T2 is at a low level, when the first end of the monostable circuit outputs a high level, the first switch tube T1 cannot be turned on, the control end of the second switch tube T2 is at a low level, the second switch tube T2 cannot be turned on, and since the first end of the second switch tube T2 is connected to the second power module through the second pull-up resistor RL2, the first end of the second switch tube T2 is at a high level, that is, the digital switch module outputs a high level, and the sleep signal is at a high level, so the digital switch module outputs the sleep signal.
When the monostable circuit outputs a low level, the first switch tube T1 is turned on, the control end of the second switch tube T2 inputs a high level, the second switch tube T2 is turned on, the first end of the second switch tube T2, that is, the output end of the digital switch module, outputs a low level, and the wake-up signal is a low level, that is, the digital switch module outputs the wake-up signal.
In addition, since the first switch tube T1 and the second switch tube T2 are both used as switch tubes, a first protection resistor RT1 is disposed between the control end and the first end of the first switch tube T1, so as to ensure that the first switch tube T1 is in a cut-off state when the control end of the first switch tube T1 inputs a high level; a second protection resistor RT2 is arranged between the control end and the first end of the second switch tube T2, so that the second switch tube T2 is in a cut-off state when the control end of the second switch tube T2 inputs a low level.
Certainly, which kind of switch tube is specifically selected for use to first switch tube T1 and second switch tube T2 in this application does not do the restriction, can make digital switch module output corresponding wake-up signal can.
As a preferred embodiment, the monostable further comprises:
the first end of the second capacitor C2 is connected with the second end of the first pull-up resistor RL1 and the first end of the wake-up switch module K, and the second end of the second capacitor C2 is connected with the first end of the third resistor R3 and is used for charging when the second end of the first resistor R1 is at a high level and the wake-up switch module K is switched off, so that the control end of the second switch tube T2 inputs the high level and the digital switch module outputs a wake-up signal;
and the third resistor R3 is connected with the second end of the second switch tube T2 and used for prolonging the charging time of the second capacitor C2, namely adjusting the preset time.
In addition, a second capacitor C2 and a third resistor R3 are further arranged in the monostable circuit, when the wake-up switch module K is turned off, the first end of the second capacitor C2 is connected with the first power module through a pull-up resistor, that is, the second end of the third resistor R3 is at a high level, the control end of the second switch tube T2 inputs the high level, and the second switch tube T2 is turned on, so that the digital switch module outputs a wake-up signal to wake up the device to be woken up 3.
When the second switch tube T2 is turned on, the second capacitor C2 is continuously charged, and the voltage input to the control terminal of the second switch tube T2 is pulled down after being fully charged, the second switch tube T2 is turned off, and the first terminal of the second switch tube T2 is at a high level, so that the digital switch module outputs a sleep signal after a preset time, so that the device 3 to be waken enters a sleep state, and the energy consumption is reduced.
As a preferred embodiment, a second capacitor C2 is disposed between the first end of each wake-up switch and the first end of the third resistor R3.
In this embodiment, in order to make the device 3 to be wakened up not disconnected in the wake-up switch module K and wake up the same wake-up source 1 when inputting again, a second capacitor C2 is disposed between the first end of each wake-up switch and the first end of the third resistor R3, the second capacitor C2 corresponding to the wake-up switch module K when being disconnected is charged, so as to raise the second end of the third resistor R3 to a high level, thereby making the control end of the second switch tube T2 input a high level, the second switch tube T2 is turned on, making the digital switch module output a wake-up signal, and waking up the device 3 to be wakened up.
As a preferred embodiment, the digital switch module further comprises:
the first filter capacitor CT1 is used for filtering noise waves input to the first switch tube T1, and has a first end connected with the first end of the first switch tube T1 and a second end connected with the control end of the first switch tube T1;
and the second filter capacitor CT2 is used for filtering noise waves input to the second switch tube T2, and has a first end connected with the first end of the second switch tube T2 and a second end connected with the control end of the second switch tube T2.
In this embodiment, in order to solve the above technical problem, in consideration of the fact that when noise is input into the first switch tube T1 and the second switch tube T2, noise may be mixed into the output of the digital switch module, which may affect the control of the device to be awakened 3, a first filter capacitor CT1 is disposed between the control end and the first end of the first switch tube T1 in the present application, so as to filter noise input into the first switch tube T1; and a second filter capacitor CT2 is arranged between the control end and the first end of the first and second switch tubes, and can filter noise waves input to the second switch tube T2.
In order to solve the technical problem, the invention provides a vehicle comprising the wake-up circuit.
The vehicle in this application has the same beneficial effect as above-mentioned wake-up circuit, and is not described herein again.
It is further noted that, in the present specification, relational terms such as first and second, and the like are 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 a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A wake-up circuit, comprising:
a plurality of wake-up sources;
the control circuit comprises a plurality of input ends and an output end, wherein the input ends are respectively connected with the plurality of awakening sources in a one-to-one correspondence mode, and the output end of the control circuit is connected with an awakening port of the device to be awakened and is used for outputting an awakening signal when any one awakening source input is received and outputting a sleep signal after preset time;
the control circuit includes:
the single-stable circuit comprises a plurality of input ends, wherein the input ends of the single-stable circuit are respectively one-to-one corresponding to the input ends of the control circuit, and is used for outputting a first level when any one awakening source input is received and outputting a second level after preset time, and the first level and the second level are opposite levels;
the input end of the digital switch module is connected with the output end of the monostable circuit, the output end of the digital switch module is connected with the output end of the control circuit and the awakening port of the device to be awakened, and the digital switch module is used for outputting the awakening signal when the monostable circuit outputs the first level and outputting the sleep signal when the monostable circuit outputs the second level;
the monostable circuit includes:
the wake-up switch module is used for being conducted when any one wake-up source input is received so as to ground the first end of the first capacitor;
the first capacitor with a second end connected with the first end of the first resistor is used for starting charging when the wake-up switch module is switched on and is fully charged after the preset time;
the second end of the first resistor is connected with the output end of the monostable circuit and the input end of the digital switch module and is used for controlling the charging time of the first capacitor;
the second end of the first resistor is at a low level when the first capacitor starts to charge, so that the monostable circuit outputs the first level; the second end of the first resistor is at a high level after the first capacitor is fully charged, so that the monostable circuit outputs the second level;
the first pull-up resistor is connected with the first power module at a first end and used for clamping a first end of the first capacitor at a high level when the wake-up switch module is not conducted;
the first power supply module is used for providing high level for the first capacitor.
2. The wake-up circuit according to claim 1, wherein the wake-up switch module includes a plurality of wake-up switches, the control terminals of the wake-up switches respectively correspond to the control terminals of the wake-up switch module one by one, and any one of the wake-up switches is turned on when a wake-up source corresponding to itself is input, so as to ground the first terminal of the first capacitor; the first end of each wake-up switch is connected with the first power supply module through one first pull-up resistor, and the second end of each wake-up switch is grounded;
and one first capacitor is arranged between the first end of each wake-up switch and the first end of the first resistor.
3. The wake-up circuit of claim 2, wherein the digital switch module comprises:
the control end is a first switching tube, the input end of the digital switching module is connected with the output end of the monostable circuit, the first end of the digital switching tube is connected with the second power module, the second end of the digital switching tube is connected with the first end of the second resistor, and the first switching tube is used for conducting when the control end of the first switching tube inputs a low level;
the first protection resistor is used for ensuring the cut-off state of the first switching tube, and the first protection resistor is connected with the first end of the first switching tube at the first end and connected with the control end of the first switching tube at the second end;
the control end is connected with the second end of the second resistor, the first end is connected with the second end of the second pull-up resistor and is the output end of the digital switch module, and the second switch tube with the grounded second end is used for being conducted when the control end of the second switch tube inputs a high level, so that the output end of the digital switch module outputs a low level, namely the digital switch module outputs the wake-up signal;
the first end of the first protection resistor is connected with the control end of the first switching tube, and the second end of the first protection resistor is connected with the first end of the first switching tube;
the second resistor is used for limiting the current input to the control end of the second switching tube;
the second pull-up resistor is connected with the second power supply module at a first end and used for clamping the output end of the digital switch module at a high level when the monostable circuit outputs the high level;
the second power module is used for providing a high level for the first switch tube, the second switch tube and the output end of the digital switch module.
4. The wake-up circuit of claim 3, wherein the monostable further comprises:
the first capacitor is used for charging when the second end of the first resistor is at a high level and the wake-up switch module is disconnected, so that the control end of the second switch tube inputs the high level and the digital switch module outputs the wake-up signal;
and the second end of the third resistor is connected with the control end of the second switch tube and is used for prolonging the charging time of the second capacitor.
5. A wake-up circuit according to claim 4, wherein one of the second capacitors is provided between the first terminal of each of the wake-up switches and the first terminal of the third resistor.
6. The wake-up circuit of claim 3, wherein the digital switch module further comprises:
the first filter capacitor is used for filtering noise waves input to the first switch tube, and the first end of the first filter capacitor is connected with the first end of the first switch tube;
the first end is connected with the first end of the second switch tube, the second end is connected with the second filter capacitor connected with the control end of the second switch tube, and the second filter capacitor is used for filtering noise waves input to the second switch tube.
7. A vehicle, characterized in that it comprises a wake-up circuit according to any one of claims 1 to 6.
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| CN202110174444.7A CN112918408B (en) | 2021-02-07 | 2021-02-07 | Wake-up circuit and vehicle |
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| CN202110174444.7A CN112918408B (en) | 2021-02-07 | 2021-02-07 | Wake-up circuit and vehicle |
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| CN112918408B true CN112918408B (en) | 2022-10-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN215494621U (en) * | 2021-07-23 | 2022-01-11 | 北京车和家信息技术有限公司 | Awakening control device and vehicle |
| CN115817268A (en) * | 2022-08-25 | 2023-03-21 | 宁德时代新能源科技股份有限公司 | Wake-up circuit, wake-up method, device, system and storage medium |
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| CN205632361U (en) * | 2016-05-16 | 2016-10-12 | 广州汽车集团股份有限公司 | Vehicle control unit's awakening device and electric automobile |
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| JP3181330B2 (en) * | 1991-09-30 | 2001-07-03 | マツダ株式会社 | Multiplex transmission equipment |
| US20160144778A1 (en) * | 2014-11-24 | 2016-05-26 | David M. Tucker | Enhanced communication system for vehicle hazard lights |
| CN209634315U (en) * | 2019-03-08 | 2019-11-15 | 上海度普新能源科技有限公司 | A kind of charging wake-up circuit |
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| WO1998020609A1 (en) * | 1996-11-04 | 1998-05-14 | Advanced Micro Devices, Inc. | Low power wake-up system and method |
| CN102717763A (en) * | 2012-06-15 | 2012-10-10 | 重庆长安汽车股份有限公司 | Hybrid control unit of electromobile and power-on and power-off control circuit of hybrid control unit |
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