Multifunctional wake-up circuit and vehicle

Abstract

The utility model discloses a multifunctional awakening circuit and a vehicle. The multifunctional awakening circuit comprises an awakening source, a first control circuit, a second control circuit, a first switch tube, a second switch tube and a device to be awakened, when the wake-up source is switched to a wake-up gear, a first level is output to the first control circuit, the first switch tube is conducted, the first switch tube outputs a second level to conduct the second switch tube, and the second switch tube outputs the first level to a device to be waken up; and when the wake-up source is switched to the wake-up gear and any other gear, a second level is output to the second control circuit and the second switch tube is conducted, and the second switch tube outputs the first level to the device to be awakened. According to the utility model, the two control circuits are arranged between the awakening source and the device to be awakened, when the awakening source is in the awakening gear or in the suspended state, the two control circuits can be respectively triggered to awaken the device to be awakened, so that the product can be awakened when the awakening source is grounded or suspended, and the practicability of the control circuit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile control, in particular to a multifunctional wake-up circuit and a vehicle. Background Art

[0002] The combination switch is a multifunctional electrical integrated switch installed on the steering column. It generally includes functional modules such as steering, wiper, PRND gear, clock spring, angle sensor, etc.

[0003] The combination switch usually has multiple wake-up sources, such as the steering paddle on the left handle, or the wiper gear adjustment knob.

[0004] The Chinese patent with publication number: CN112918408B discloses a wake-up circuit and a vehicle, see Figure 1 The control circuit includes multiple wake-up sources, and a control circuit having multiple input terminals and an output terminal, wherein the multiple input terminals are connected to the multiple wake-up sources in a one-to-one correspondence, and the output terminal is connected to the device to be awakened, wherein when receiving the input of any one of the multiple wake-up sources, the control circuit will output a wake-up signal to wake up the wake-up device, and the control circuit can realize that the SBC can be awakened when the wake-up source button is grounded. When the owner parks the car and leaves without adjusting the wake-up device to the initial position, the product will enter a dormant state after a period of time. At this time, the gear position of the wake-up device is still in the wake-up gear position. When the gear position is changed from grounding to hanging and entering dormancy, the product cannot be awakened when the gear position is adjusted to the initial position. The existing control circuit can only wake up the product when it enters the wake-up source gear position (that is, when the gear position is grounded).

[0005] Therefore, the existing wake-up control circuit has the technical problem of low practicality. It can be seen that how to solve the technical problem that the wake-up device can only be awakened when it is in the wake-up gear to improve the practicality of the wake-up control circuit is a problem that needs to be solved in the field. Utility Model Content

[0006] In view of the technical problem that the existing combination switch control circuit can wake up the product only when entering the wake-up source gear, the purpose of the utility model is to provide a multifunctional wake-up circuit and vehicle, which can realize that the product can be woken up regardless of whether the wake-up source is in the wake-up gear or is moved to any other gear in the sleep state, thereby improving the practicality of the control circuit and effectively overcoming the problems existing in the prior art.

[0007] In order to achieve the above object, the utility model provides a multifunctional wake-up circuit, including a wake-up source, a first control circuit, a second control circuit, a digital switch module and a device to be awakened;

[0008] The wake-up source includes two output ends and is respectively connected to the input ends of the first control circuit and the second control circuit. The digital switch module includes a first switch tube and a second switch tube. The output end of the first control circuit is connected to the control end of the first switch tube, the first end of the first switch tube is connected to the control end of the second switch tube, the output end of the second control circuit is connected to the control end of the second switch tube, and the first end of the second switch tube is connected to the device to be awakened;

[0009] When the wake-up source switches to the wake-up gear, the first level is output to the first control circuit, the first control circuit outputs the first level to turn on the first switch tube, the first switch tube outputs the second level to turn on the second switch tube, and the second switch tube outputs the first level, that is, outputs the wake-up signal to the device to be awakened;

[0010] When the wake-up source is switched to any other wake-up position, the second level is output to the second control circuit, the second control circuit outputs the second level to turn on the second switch tube, and the second switch tube outputs the first level, that is, outputs the wake-up signal to the device to be awakened.

[0011] Furthermore, the first control circuit includes an input end and a first monostable circuit arranged corresponding to the input end, and the output end of the first monostable circuit is the second switch tube.

[0012] Further, the first monostable circuit includes a first contact, a first pull-up resistor, a first capacitor, a first resistor and a second contact, a first end of the first contact is connected to the second end of the first pull-up resistor and the first end of the first capacitor, and a second end is connected to a wake-up source, and is configured to be turned on when receiving a wake-up source input;

[0013] The second end of the first capacitor is connected to the first end of the first resistor, and is used to start charging when the wake-up source is turned on;

[0014] The second end of the first resistor is connected to the second contact, the second contact is the output end of the first monostable circuit, and is connected to the input end of the digital switch module, and the digital switch module is protected by setting the first resistor to limit the current;

[0015] The first end of the first pull-up resistor is connected to the power module, and is used to clamp the first end of the first capacitor to a high level when the wake-up source is not turned on;

[0016] A second resistor for current limiting is provided between the first contact and the first pull-up resistor to protect the power supply circuit.

[0017] Furthermore, a first protection resistor is provided between the control end and the first end of the first switch tube, which can ensure that the first switch tube is in a cut-off state when a high level is input to the control end of the first switch tube.

[0018] Furthermore, a second protection resistor is provided between the control end and the first end of the second switch tube, which can ensure that the second switch tube is in a cut-off state when a low level is input to the control end of the second switch tube.

[0019] Furthermore, the first switch tube is provided with a first filter capacitor, a first end of the first filter capacitor is connected to the first end of the first switch tube, and a second end of the first filter capacitor is connected to the second end of the first switch tube, for filtering clutter input to the first switch tube.

[0020] Furthermore, the second switch tube is equipped with a second filter capacitor, the first end of the first filter capacitor is connected to the first end of the first switch tube, and the second end is connected to the second end of the first switch tube, for filtering clutter input to the first switch tube.

[0021] Furthermore, the second control circuit includes a second monostable circuit, an input end of the second monostable circuit is connected to the wake-up source, and an output end of the second monostable circuit is connected to the digital switch module.

[0022] Further, the second monostable circuit includes a second capacitor, a first resistor, a third contact and a fourth contact;

[0023] A first end of the second capacitor is connected to the first contact, and a second end is connected to the first end of the second resistor, and is used to start charging when the wake-up source is turned on;

[0024] The second end of the second resistor is connected to the third contact, the third contact is connected to the fourth contact, the fourth contact is the output end of the second monostable circuit, and is connected to the input end of the digital switch module. The digital switch module is protected by setting the second resistor for current limiting.

[0025] In order to achieve the above-mentioned object, the utility model provides a vehicle, comprising the multifunctional wake-up circuit.

[0026] The multifunctional wake-up circuit and vehicle provided by the utility model have two control circuits between the wake-up source and the device to be awakened. When the wake-up source is in the wake-up gear or in a suspended state, the two control circuits can be triggered respectively to wake up the device to be awakened. The product can be woken up when the wake-up source is grounded or suspended, thereby improving the practicality of the control circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The present invention is further described below in conjunction with the accompanying drawings and specific implementations.

[0028] Figure 1 It is a structural schematic diagram of an existing wake-up control circuit;

[0029] Figure 2A schematic diagram of the structure of the multifunctional wake-up circuit provided by the utility model;

[0030] Figure 3 This is a schematic diagram of the specific structure of the control circuit in the multifunctional wake-up circuit provided by the utility model. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0032] The existing wake-up circuit can only wake up the device to be awakened when the wake-up source is in the wake-up gear. When the product is in a dormant state, the product cannot be awakened when the gear is adjusted to the initial position. Due to the above technical problems, the existing wake-up circuit has a technical problem of low practicality.

[0033] Aiming at the technical problem that the existing wake-up circuit has low practicality, the utility model provides a multifunctional wake-up circuit, see Figure 2 It includes a wake-up source 1, a first control circuit 2, a second control circuit 3 and a device to be awakened 4. By arranging two control circuits between the wake-up source 1 and the device to be awakened 4, when the wake-up source 1 is in the wake-up position or is moved to other positions in the sleep state, the two control circuits can be triggered respectively to wake up the device to be awakened, so that the product can be awakened when the wake-up source is grounded or suspended.

[0034] Among them, the wake-up source 1 is connected to the control circuit through a bidirectional TVS tube. When the wake-up source 1 is in the wake-up gear, the device to be awakened is awakened through the path of the first control circuit 2.

[0035] In some embodiments, when the device to be awakened 4 is a wiper, the wake-up source 1 may be a button or knob of the wiper. When the user turns the button or knob of the wiper to the wake-up position, the button or knob will output a signal to the first control circuit 2 as a wake-up source, and the wake-up signal will be output through the first control circuit 2, thereby waking up the device to be awakened 4.

[0036] When the device to be awakened 4 is in a dormant state, when the button or knob of the wiper is moved to any other gear, the button or knob will output a signal to the second control circuit 3 as a wake-up source, and the second control circuit 3 will output a wake-up signal to wake up the device to be awakened 4.

[0037] See also Figure 3The first control circuit 2 includes an input end and a first monostable circuit corresponding to the input end. The input end of the first control circuit 2 is connected to the output end of the first monostable circuit. The output end is a digital switch module connected to the wake-up port of the device to be awakened, which is used to output a wake-up signal when the first monostable circuit outputs a first level.

[0038] The first monostable circuit includes a first contact TP122, a first pull-up resistor R147, a first capacitor C56, a first resistor R43 and a second contact TP75.

[0039] The first end of the first contact TP122 is connected to the second end of the first pull-up resistor R147 and the first end of the first capacitor C56, and the second end is connected to the wake-up source 1, and is used to be turned on when receiving the input of the wake-up source 1. The second end of the first capacitor C56 is connected to the first end of the first resistor R43, and is used to start charging when the wake-up source is turned on.

[0040] The second end of the first resistor R43 is connected to the second contact TP75, the second contact TP75 is the output end of the first monostable circuit, and is connected to the input end of the digital switch module. By setting the first resistor R43 for current limiting, the base of the first switch tube T1 in the digital switch module is protected to avoid circuit failure.

[0041] A first end of the first pull-up resistor R147 is connected to the power module, and is used to clamp the first end of the first capacitor C56 to a high level when the wake-up source is not turned on.

[0042] A second resistor R100 for current limiting is provided between the first contact TP122 and the first pull-up resistor R147 to protect the power circuit.

[0043] The digital switch module includes a first switch tube T1 and a second switch tube T4 , wherein the first switch tube T1 is a PNP switch tube, and the second switch tube T4 is an NPN switch tube.

[0044] Since the first end of the first switch tube T1 is connected to the power module, the first end of the first switch tube T1 is at a high level. When the output end of the first monostable circuit outputs a high level, the first switch tube T1 cannot be turned on.

[0045] Since the second end of the second switch tube T4 is grounded, the second end of the second switch tube T4 is at a low level. When the first contact TP122 is pulled high, the first capacitor C56 is at a high level when it starts to charge, so that the second monostable circuit outputs a high level. When the output end of the first monostable circuit outputs a high level, the first switch tube T1 cannot be turned on, the control end of the second switch tube T4 is at a low level, and the second switch tube T4 cannot be turned on either. Since the first end of the second switch tube T4 is connected to the power module through the second pull-up resistor R15, the first end of the second switch tube T4 is at a high level, and the digital switch module outputs a high level.

[0046] When the first monostable circuit outputs a low level, the first switch tube T1 is turned on, and the second end of the first switch tube T1 is connected to the first pull-up resistor R147, so it outputs a high level, turning on the second switch tube T4, and the second end of the second switch tube T4 is grounded and outputs a low level, then the digital switch module outputs a wake-up signal, the wake-up circuit (WK) is pulled low, and the system basis chip (SBC) of the device to be awakened is awakened.

[0047] In addition, since both the first switch tube T1 and the second switch tube T4 are used as switch tubes, a first protection resistor R104 is provided between the control end and the first end of the first switch tube T1, which can ensure that the first switch tube T1 is in a cut-off state when a high level is input to the control end of the first switch tube T1; a second protection resistor R1 is provided between the control end and the first end of the second switch tube T4, which can ensure that the second switch tube T4 is in a cut-off state when a low level is input to the control end of the second switch tube T4.

[0048] At the same time, the digital switch module is also provided with a first filter capacitor C3 and a second filter capacitor C15.

[0049] Among them, the first end of the first filter capacitor C3 is connected to the first end of the first switch tube T1, and the second end is connected to the second end of the first switch tube T1, which is used to filter the clutter input to the first switch tube T1 to prevent some noise from interfering with the base of the first switch tube T1.

[0050] The first end of the second filter capacitor C15 is connected to the first end of the second switch tube T4, and the second end is connected to the second end of the second switch tube T4, for filtering the clutter input to the second switch tube T4 to prevent some noise from interfering with the base of the first switch tube T2.

[0051] Further, the second control circuit 3 includes a second monostable circuit, the input end of the second monostable circuit is connected to the first contact TP122, and the output end is connected to the digital switch module. The second monostable circuit includes a second capacitor C59, a second resistor R44, a third contact TP158 and a fourth contact TP76.

[0052] A first end of the second capacitor C59 is connected to the first contact TP122 , and a second end is connected to the first end of the second resistor R44 , and is used to start charging when the wake-up source is turned on.

[0053] The second end of the second resistor R44 is connected to the third contact TP158, the third contact TP158 is connected to the fourth contact TP76, the fourth contact TP76 is the output end of the second monostable circuit, and is connected to the input end of the digital switch module. By setting the second resistor R44 for current limiting, the base of the second switch tube T4 in the digital switch module is protected to avoid circuit failure.

[0054] When the first contact TP122 is pulled high, the second capacitor C59 starts to charge at a high level, so that the second monostable circuit outputs a high level.

[0055] When the second monostable circuit outputs a high level, the control end of the second switch tube T4 inputs a high level, the second switch tube T4 is turned on, the second end of the second switch tube T4 is grounded and outputs a low level, and the wake-up signal is a low level, then the digital switch module outputs a wake-up signal, then the wake-up circuit (WK) is pulled low, and the system basis chip (SBC) of the device to be awakened is awakened.

[0056] Based on the multifunctional wake-up circuit constructed by the above scheme, the working process of the circuit in a specific application is illustrated below by way of example. It should be noted here that the working process is only an example and does not constitute a limitation to the present scheme.

[0057] When the button or knob of the wiper is put into the wake-up position, the wake-up source is grounded, a low level is output, and the first contact TP122 is pulled low. At this time, the second contact TP159 will drop sharply and be pulled low, so that TP75 is also pulled low, and the first switch tube T1 is turned on. Since the first end of the first switch tube T1 is connected to the first pull-up resistor R147, and the first end of the first pull-up resistor R147 is connected to the power module, a high level is always output. Therefore, after the first switch tube T1 is turned on, a high level is output, and the second switch tube T4 is turned on. After the second switch tube T4 is turned on, the third end of the second switch tube T4 is grounded, and a low level is output. The contact TP77 is pulled low, WK is pulled low, and SBC is awakened.

[0058] At the same time, when the wiper button or knob enters the wake-up position, the third contact TP158 will also be pulled low instantly, but the second switch tube T4 needs to input a high level to be turned on, so the second control circuit 3 is not turned on when the wiper button or knob enters the wake-up position.

[0059] When the wiper is in sleep mode, when the wiper button or knob enters other gears, the wake-up source is not turned on at this time. Therefore, the first pull-up resistor R147 clamps the first end of the first capacitor C56 at a high level, the first contact TP122 will be pulled high instantly, and the second capacitor C59 starts to charge, so that the third contact TP158 will rise sharply, and the fourth contact TP76 will be pulled high accordingly, turning on the second switch tube T4, and the second end of the second switch tube T4 is grounded, then the output is low, the contact TP77 is pulled low, WK is pulled low, and SBC is awakened.

[0060] At the same time, at the moment of rotating out of the wake-up position, the first capacitor C56 starts to charge, and the second contact TP159 will also rise sharply, but the first switch tube T1 needs to input a low level to be turned on, so the first control circuit is not turned on when the wiper button or knob enters the wake-up position.

[0061] The multifunctional wake-up circuit formed by the above scheme has two control circuits between the wake-up source and the device to be awakened. When the wake-up source is in the wake-up position or in a suspended state, the two control circuits can be triggered respectively to wake up the device to be awakened. The product can be awakened when the wake-up source is grounded or suspended, thereby improving the practicality of the control circuit.

[0062] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A multifunctional wake-up circuit, characterized in that: It includes a wake-up source, a first control circuit, a second control circuit, a digital switch module and a device to be awakened; The wake-up source includes two output ends and is respectively connected to the input ends of the first control circuit and the second control circuit. The digital switch module includes a first switch tube and a second switch tube. The output end of the first control circuit is connected to the control end of the first switch tube, the first end of the first switch tube is connected to the control end of the second switch tube, the output end of the second control circuit is connected to the control end of the second switch tube, and the first end of the second switch tube is connected to the device to be awakened; When the wake-up source switches to the wake-up gear, the first level is output to the first control circuit, the first control circuit outputs the first level to turn on the first switch tube, the first switch tube outputs the second level to turn on the second switch tube, and the second switch tube outputs the first level, that is, outputs the wake-up signal to the device to be awakened; When the wake-up source is switched to any other wake-up position, the second level is output to the second control circuit, the second control circuit outputs the second level to turn on the second switch tube, and the second switch tube outputs the first level, that is, outputs the wake-up signal to the device to be awakened.

2. A multifunctional wake-up circuit according to claim 1, characterized in that: The first control circuit includes an input end and a first monostable circuit corresponding to the input end, and the output end of the first monostable circuit is a second switch tube.

3. A multifunctional wake-up circuit according to claim 2, characterized in that: The first monostable circuit includes a first contact, a first pull-up resistor, a first capacitor, a first resistor and a second contact, wherein a first end of the first contact is connected to a second end of the first pull-up resistor and a first end of the first capacitor, and a second end is connected to a wake-up source, and is configured to be turned on when receiving a wake-up source input; The second end of the first capacitor is connected to the first end of the first resistor, and is used to start charging when the wake-up source is turned on; The second end of the first resistor is connected to the second contact, the second contact is the output end of the first monostable circuit, and is connected to the input end of the digital switch module, and the digital switch module is protected by setting the first resistor to limit the current; The first end of the first pull-up resistor is connected to the power module, and is used to clamp the first end of the first capacitor to a high level when the wake-up source is not turned on; A second resistor for current limiting is provided between the first contact and the first pull-up resistor.

4. The multifunctional wake-up circuit according to claim 1, characterized in that: A first protection resistor is provided between the control end and the first end of the first switch tube, which can ensure that the first switch tube is in a cut-off state when a high level is input to the control end of the first switch tube.

5. The multifunctional wake-up circuit according to claim 1, characterized in that: A second protection resistor is provided between the control end and the first end of the second switch tube, which can ensure that the second switch tube T is in a cut-off state when a low level is input to the control end of the second switch tube.

6. The multifunctional wake-up circuit according to claim 1, characterized in that: The first switch tube is equipped with a first filter capacitor, a first end of the first filter capacitor is connected to the first end of the first switch tube, and a second end of the first filter capacitor is connected to the second end of the first switch tube, for filtering clutter input to the first switch tube.

7. The multifunctional wake-up circuit according to claim 1, characterized in that: The second switch tube is equipped with a second filter capacitor, the first end of the first filter capacitor is connected to the first end of the first switch tube, and the second end is connected to the second end of the first switch tube, for filtering the clutter input to the first switch tube.

8. The multifunctional wake-up circuit according to claim 1, characterized in that: The second control circuit includes a second monostable circuit, an input end of the second monostable circuit is connected to the wake-up source, and an output end of the second monostable circuit is connected to the digital switch module.

9. The multifunctional wake-up circuit according to claim 8, characterized in that: The second monostable circuit includes a second capacitor, a first resistor, a third contact and a fourth contact; A first end of the second capacitor is connected to the first contact, and a second end is connected to the first end of the second resistor, and is used to start charging when the wake-up source is turned on; The second end of the second resistor is connected to the third contact, the third contact is connected to the fourth contact, the fourth contact is the output end of the second monostable circuit, and is connected to the input end of the digital switch module. The digital switch module is protected by setting the second resistor for current limiting.

10. A vehicle, characterized in that: The invention comprises the multifunctional wake-up circuit as described in any one of claims 1 to 9.

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