Energy-saving sleep circuit and device and driving equipment

Abstract

The utility model provides an energy-saving dormancy circuit, an energy-saving dormancy device and driving equipment, and relates to the technical field of electronic control, the circuit comprises a voltage stabilizing module, a communication module and a main control module; the voltage stabilizing module is electrically connected with the communication module; the communication module is also electrically connected with the main control module; the main control module is used for receiving the control signal and sending a dormancy signal to the communication module according to the control signal; the communication module is used for sending a forbidding signal to the voltage stabilizing module when receiving the dormancy signal; and the voltage stabilizing module is used for entering a sleep mode when receiving the forbidding signal, and in the sleep mode, the output current of the voltage stabilizing module is smaller than a preset current threshold value. According to the invention, the sleep current is reduced, the adverse effect of the output current of the voltage stabilizing module on the sleep power consumption is avoided, and the reliability of the sleep circuit is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electronic control technical field especially, and it is a kind of energy-saving hibernate circuit, device and driving equipment. BACKGROUND

[0002] With the continuous development of driving equipment technology, the sleep power consumption requirement of vehicle-mounted electronic products is also continuously improved, the traditional local interconnect network (LIN, Local Interconnect Network) sleep circuit, sleep current is high, cannot satisfy the existing sleep low power consumption requirement. UTILITY MODEL CONTENTS

[0003] Therefore, the utility model aims at overcoming the deficiency in prior art, and provides a kind of energy-saving hibernate circuit, device and driving equipment.The utility model provides the following technical solutions:

[0004] Firstly, the present application provides an energy-saving hibernate circuit, which includes a voltage stabilizing module, a communication module and a master control module.

[0005] The master control module is configured to receive a control signal and send a sleep signal to the communication module according to the control signal. The communication module is configured to send a disable signal to the voltage stabilizing module when receiving the sleep signal. The voltage stabilizing module is configured to enter a sleep mode when receiving the disable signal, and the output current of the voltage stabilizing module is less than a preset current threshold in the sleep mode.

[0006] In an embodiment, the voltage stabilizing module includes a voltage stabilizing chip, and the voltage stabilizing chip includes an enable pin electrically connected to the communication module.

[0007] In an embodiment, the voltage stabilizing module further includes an input filter capacitor and an output filter capacitor, and the voltage stabilizing chip further includes a voltage input pin and a voltage output pin. The voltage input pin is electrically connected to an external power supply and a first end of the input filter capacitor, respectively, and a second end of the input filter capacitor is grounded. The voltage output pin is electrically connected to a first end of the output filter capacitor, and a second end of the output filter capacitor is grounded.

[0008] In an embodiment, the communication module comprises: a communication chip, the communication chip comprises: a sleep pin and an enable control pin, the sleep pin is electrically connected with the master module, and the enable control pin is electrically connected with the enable pin; the sleep pin is used for receiving the sleep signal from the master module; and the enable control pin is used for sending the disable signal to the enable pin.

[0009] In an embodiment, the communication chip further comprises: a data input pin and a data output pin, the data input pin and the data output pin are respectively electrically connected with the master module; the data input pin is used for receiving first communication data from the master module; and the data output pin is used for sending second communication data to the master module.

[0010] In an embodiment, the communication module further comprises: a pull-up resistor, a pull-down resistor, a signal filtering capacitor, a power filtering capacitor and a protection tube; the communication chip further comprises: a wake-up pin, a power pin, a communication pin and a ground pin; the pull-up resistor is connected in series between the master module and the data input pin; the pull-down resistor is connected in series between the external power supply and the wake-up pin; the signal filtering capacitor and the protection tube are both connected in parallel between the communication pin and the ground pin; and a first end of the power filtering capacitor is respectively electrically connected with the power pin and the external power supply, and a second end of the power filtering capacitor is grounded.

[0011] In an embodiment, the voltage stabilizing module is respectively electrically connected with an external power supply and the master module; the voltage stabilizing module is used for obtaining an initial voltage from the external power supply, and outputting a target voltage to the master module after converting the initial voltage into the target voltage, the target voltage belongs to a preset voltage range.

[0012] In an embodiment, the communication module is further electrically connected with at least one functional module; and the communication module is used for performing data interaction with the at least one functional module.

[0013] In a second aspect, the application provides an energy-saving sleep device, the device comprises: at least one functional module and the energy-saving sleep circuit of the first aspect; and the at least one functional module is electrically connected with the energy-saving sleep circuit.

[0014] In a third aspect, the application provides a driving device, comprising: the energy-saving sleep circuit of the first aspect.

[0015] The embodiment of the utility model provides a kind of energy-saving hibernate circuit, device and driving equipment, the circuit includes: voltage stabilizing module, communication module and main control module;The voltage stabilizing module is electrically connected with the communication module;The communication module is also electrically connected with the main control module;The main control module is used to receive control signal, and according to the control signal, sends hibernate signal to the communication module;The communication module is used to when receiving the hibernate signal, sends disable signal to the voltage stabilizing module;The voltage stabilizing module is used to when receiving the disable signal, enter hibernate mode, in hibernate mode, the output current of the voltage stabilizing module is less than preset current threshold value.This application enters hibernate mode by controlling voltage stabilizing module, reduces hibernate current, avoids the adverse effect caused by voltage stabilizing module output current to hibernate power consumption, improves the reliability of hibernate circuit.

[0016] In order to make the above-mentioned purpose, features and advantages of the utility model more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, it should be understood that the following drawings only show some embodiments of the utility model, therefore should not be regarded as the limitation to the scope, for ordinary skilled person in the art, without creative labor, other related drawings can also be obtained according to these drawings.

[0018] Figure 1 A structure schematic view of the energy-saving hibernate circuit provided by the embodiment of the application is shown;

[0019] Figure 2 A circuit schematic view of the voltage stabilizing module provided by the embodiment of the application is shown;

[0020] Figure 3 A circuit schematic view of the communication module provided by the embodiment of the application is shown;

[0021] Figure 4 A structure schematic view of the energy-saving hibernate device provided by the embodiment of the application is shown.

[0022] Main component symbol explanation:

[0023] 100-energy-saving hibernate circuit;110-voltage stabilizing module;120-communication module;130-main control module;400-energy-saving hibernate device;410-function module. DETAILED DESCRIPTION

[0024] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are for the purpose of explanation of the present application, and should not be understood as a limitation of the present application.

[0025] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments, and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] Embodiment 1

[0028] In the conventional local interconnect network (LIN, Local Interconnect Network) sleep circuit, the microcontroller unit (MCU, Microcontroller Unit) controls the LIN transceiver to enter the sleep mode, and then the MCU enters the sleep mode. In the conventional LIN sleep circuit, the output power supply of the low dropout regulator (LDO, Low Dropout Regulator) is not closed, which results in a large output current of the low dropout regulator, so that the sleep current of the circuit exceeds the standard, and cannot meet the increasingly high sleep power consumption requirements. For this purpose, please refer to Figure 1 The energy-saving sleep circuit 100 provided by the embodiments of the present application comprises a voltage stabilizing module 110, a communication module 120 and a master control module 130; the voltage stabilizing module 110 is electrically connected with the communication module 120; the communication module 120 is further electrically connected with the master control module 130;

[0029] The master control module 130 is configured to receive a control signal, and send a sleep signal to the communication module 120 according to the control signal; the communication module 120 is configured to send a disable signal to the voltage stabilizing module 110 when the sleep signal is received; the voltage stabilizing module 110 is configured to, when the disable signal is received, the output current of the voltage stabilizing module 110 is less than a preset current threshold in the sleep mode.

[0030] In the embodiment, the main control module 130 comprises a micro control chip, which is configured to acquire a control signal and send a sleep signal to the communication module 120 according to the control signal, so as to control the communication module 120 to enter a sleep mode. It should be noted that before the communication module 120 enters the sleep mode after receiving the sleep signal, the communication module 120 sends a disable signal to the voltage stabilizing module 110, so that the voltage stabilizing module 110 also enters the sleep mode, thereby avoiding the influence of the excessive sleep current caused by the voltage stabilizing module 110.

[0031] Specifically, when the energy-saving sleep circuit 100 needs to sleep, the main control module 130 acquires a control signal and sends a sleep signal to the communication module 120 according to the control signal; when receiving the sleep signal, the communication module 120 sends a disable signal to the voltage stabilizing module 110, so as to control the voltage stabilizing module 110 to enter a sleep mode; then, the communication module 120 and the main control module 130 enter the sleep mode in turn, thereby realizing that each module in the energy-saving sleep circuit 100 enters the sleep mode and avoiding the excessive sleep current.

[0032] In an embodiment, please refer to Figure 2 , Figure 2 A circuit schematic diagram of the voltage stabilizing module 110 provided by the embodiment is shown, which comprises a voltage stabilizing chip U1, the voltage stabilizing chip U1 comprises an enable pin EN, which is electrically connected with the communication module 120; the enable pin EN is configured to receive the disable signal from the communication module 120.

[0033] In the embodiment, INH_EN represents the disable signal, after the voltage stabilizing chip U1 receives the disable signal through the enable pin EN, the voltage stabilizing chip U1 enters the sleep mode, and in the sleep mode, the output current of the voltage stabilizing chip U1 is less than a preset current threshold.

[0034] In an embodiment, the voltage stabilizing module 110 further comprises an input filter capacitor C1 and an output filter capacitor C2, and the voltage stabilizing chip U1 further comprises a voltage input pin VSP and a voltage output pin VOUT.

[0035] The voltage input pin VSP is electrically connected with an external power supply and a first end of the input filter capacitor C1 respectively, and a second end of the input filter capacitor C1 is grounded.

[0036] The voltage output pin VOUT is electrically connected with a first end of the output filter capacitor C2, and a second end of the output filter capacitor C2 is grounded.

[0037] In the embodiment, the voltage input pin VSP of the voltage stabilizing chip U1 is electrically connected with the external power supply VIN, for obtaining the initial voltage from the external power supply VIN, and converting the initial voltage into a target voltage, for example, +5V, and then outputting externally through the voltage output pin VOUT. The pin G of the voltage stabilizing chip is grounded.

[0038] The voltage stabilizing module 110 further includes an input filter capacitor C1 and an output filter capacitor C2, wherein the input filter capacitor C1 is used for filtering the initial voltage input into the voltage stabilizing chip U1, and the output filter capacitor C2 is used for filtering the target voltage output by the voltage stabilizing chip U1.

[0039] In an embodiment, please refer to Figure 3 , Figure 3 A circuit schematic diagram of the communication module 120 provided by the embodiment is shown. The communication module 120 includes a communication chip U2, the model number of which includes but is not limited to SIT1021QT / 1. The communication chip U2 includes a sleep pin SLP_N and an enable control pin INH. The sleep pin SLP_N is electrically connected with the master control module 130, and the enable control pin INH is electrically connected with the enable pin EN. The sleep pin SLP_N is used for receiving the sleep signal from the master control module 130, and the enable control pin INH is used for sending the disable signal to the enable pin.

[0040] In the embodiment, when the communication chip U2 receives the sleep signal through the sleep pin SLP_N, the communication chip U2 outputs the disable signal to the enable pin EN of the voltage stabilizing chip U1 through the enable control pin INH, so as to control the voltage stabilizing chip U1 to enter the sleep mode.

[0041] In an embodiment, the communication chip U1 further includes a data input pin RXD and a data output pin TXD, which are respectively electrically connected with the master control module 130. The data input pin RXD is used for receiving the first communication data from the master control module 130, and the data output pin TXD is used for sending the second communication data to the master control module 130.

[0042] In the embodiment, the communication chip U2 interacts with the master control module 130 through the data input pin RXD and the data output pin RXD.

[0043] In an embodiment, the communication module 120 further comprises: a pull-up resistor R1, a pull-down resistor R2, a signal filtering capacitor C3, a power filtering capacitor C4, and a protection tube D1; the communication chip U2 further comprises: a wake-up pin WAKE_N, a power supply pin VBAT, a communication pin LIN, and a ground pin GND; the pull-up resistor R1 is connected in series between the master control module 130 and the data input pin RXD; the pull-down resistor R2 is connected in electrical connection between the external power supply and the wake-up pin WAKE_N; the signal filtering capacitor C3 and the protection tube D1 are both connected in parallel between the communication pin LIN and the ground pin GND; a first end of the power filtering capacitor C4 is respectively connected in electrical connection with the power supply pin VBAT and the external power supply VIN, and a second end of the power filtering capacitor C4 is grounded.

[0044] In the present embodiment, the wake-up pin WAKE_N is used to receive a wake-up signal, when the wake-up signal is received, the communication chip U2 enters a working mode, and sends an enable signal to the enable pin EN of the voltage stabilizing chip U1 through the enable control pin INH, so that the voltage stabilizing chip U1 enters a working mode, and in the working mode, the output current of the voltage stabilizing chip U1 belongs to a preset current range.

[0045] The signal filtering capacitor C3 and the protection tube D1 are used for filtering processing of the output signal of the communication chip U1, and the power filtering capacitor C4 is used for filtering processing of the power input to the communication chip.

[0046] In an embodiment, the voltage stabilizing module 110 is further connected in electrical connection with an external power supply and the master control module 130 respectively; the voltage stabilizing module 110 is used to obtain an initial voltage from the external power supply, and convert the initial voltage into a target voltage and output the target voltage to the master control module 130, and the target voltage belongs to a preset voltage range.

[0047] The voltage stabilizing module 110 is used to obtain an initial voltage from the external power supply VIN, and convert and stabilize the initial voltage to obtain a target voltage, and output the target voltage to the master control module 130, so as to provide a stable and reliable voltage input for the master control module 130.

[0048] In an embodiment, the communication module 120 is further connected in electrical connection with at least one functional module; the communication module 120 is used to perform data interaction with the at least one functional module.

[0049] Specifically, the communication pin LIN in the communication module 120 is connected in electrical connection with each functional module, and is used to perform data interaction with each functional module.

[0050] The energy-saving sleep circuit provided by the embodiment of the present application comprises: a voltage stabilizing module, a communication module and a master control module; the voltage stabilizing module is electrically connected with the communication module; the communication module is further electrically connected with the master control module; the master control module is used for receiving a control signal and sending a sleep signal to the communication module according to the control signal; the communication module is used for sending a disable signal to the voltage stabilizing module when the sleep signal is received; the voltage stabilizing module is used for entering a sleep mode when the disable signal is received, and the output current of the voltage stabilizing module is less than a preset current threshold in the sleep mode. The voltage stabilizing module is controlled to enter the sleep mode, the sleep current is reduced, the adverse effect of the output current of the voltage stabilizing module on the sleep power consumption is avoided, and the reliability of the sleep circuit is improved.

[0051] Embodiment 2

[0052] In addition, referring to Figure 4 The energy-saving sleep device 400 provided by the embodiment of the present application comprises: at least one functional module 410 and the energy-saving sleep circuit provided in the embodiment 1; the at least one functional module 410 is electrically connected with the energy-saving sleep circuit.

[0053] Specifically, the energy-saving sleep circuit 100 comprises: a voltage stabilizing module 110, a communication module 120 and a master control module 130; the voltage stabilizing module 110 is electrically connected with the communication module 120; the communication module 120 is further electrically connected with the master control module 130;

[0054] The master control module 130 is used for receiving a control signal and sending a sleep signal to the communication module 120 according to the control signal; the communication module 120 is used for sending a disable signal to the voltage stabilizing module 110 when the sleep signal is received; the voltage stabilizing module 110 is used for entering a sleep mode when the disable signal is received, and the output current of the voltage stabilizing module 110 is less than a preset current threshold in the sleep mode.

[0055] The energy-saving sleep device 400 provided by the embodiment of the present application can execute the function of the energy-saving sleep circuit 100 provided in the embodiment 1, and details are not repeated here.

[0056] The energy-saving sleep device provided by the embodiment of the application comprises at least one functional module and the energy-saving sleep circuit described in the embodiment 1; the at least one functional module is electrically connected with the energy-saving sleep circuit. The circuit comprises a voltage stabilizing module, a communication module and a master control module; the voltage stabilizing module is electrically connected with the communication module; the communication module is further electrically connected with the master control module; the master control module is used for receiving a control signal and sending a sleep signal to the communication module according to the control signal; the communication module is used for sending a disable signal to the voltage stabilizing module when the sleep signal is received; the voltage stabilizing module is used for entering a sleep mode when the disable signal is received, and the output current of the voltage stabilizing module is less than a preset current threshold in the sleep mode. The application reduces the sleep current by controlling the voltage stabilizing module to enter the sleep mode, avoids the adverse effect of the output current of the voltage stabilizing module on the sleep power consumption, and improves the reliability of the sleep circuit.

[0057] In addition, the utility model embodiment further provides a kind of driving equipment, including the energy-saving sleep circuit 100 described in the first aspect.

[0058] The driving equipment can execute the function of the energy-saving sleep circuit 100 provided by the embodiment 1 described above, and details are not repeated here to avoid repetition.

[0059] In all examples shown and described herein, any specific values should be interpreted as merely exemplary and not as a limitation, and thus, other examples of the example embodiments can have different values.

[0060] It should be noted that similar reference numbers and letters refer to similar items in the following drawings, and thus, once an item is defined in one drawing, it need not be further defined and explained in subsequent drawings.

[0061] The above-described embodiments only express several implementation manners of the utility model, and its description is more specific and detailed, but it should not be understood as the limitation of the scope of the utility model. It should be pointed out that, for ordinary skilled person in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model.

Claims

1. An energy-saving sleep circuit, characterized in that, The circuit includes: a voltage regulator module, a communication module, and a main control module; The voltage regulator module is electrically connected to the communication module; The communication module is also electrically connected to the main control module; The main control module is used to receive control signals and send a sleep signal to the communication module according to the control signals; The communication module is used to send a disable signal to the voltage regulator module when it receives the sleep signal; The voltage regulator module is used to enter a sleep mode when it receives the disable signal. In the sleep mode, the output current of the voltage regulator module is less than a preset current threshold.

2. The energy-saving sleep circuit according to claim 1, characterized in that, The voltage regulator module includes a voltage regulator chip, and the voltage regulator chip includes an enable pin, which is electrically connected to the communication module. The enable pin is used to receive the disable signal from the communication module.

3. The energy-saving sleep circuit according to claim 2, characterized in that, The voltage regulator module further includes: an input filter capacitor and an output filter capacitor, and the voltage regulator chip further includes: a voltage input pin and a voltage output pin; The voltage input pin is electrically connected to the external power supply and the first terminal of the input filter capacitor, respectively, and the second terminal of the input filter capacitor is grounded. The voltage output pin is electrically connected to the first terminal of the output filter capacitor, and the second terminal of the output filter capacitor is grounded.

4. The energy-saving sleep circuit according to claim 3, characterized in that, The communication module includes a communication chip, which includes a sleep pin and an enable control pin. The sleep pin is electrically connected to the main control module, and the enable control pin is electrically connected to the enable pin. The sleep pin is used to receive the sleep signal from the main control module; The enable control pin is used to send the disable signal to the enable pin.

5. The energy-saving sleep circuit according to claim 4, characterized in that, The communication chip further includes: a data input pin and a data output pin, wherein the data input pin and the data output pin are electrically connected to the main control module respectively; The data input pin is used to receive first communication data from the main control module; The data output pin is used to send second communication data to the main control module.

6. The energy-saving sleep circuit according to claim 5, characterized in that, The communication module further includes: pull-up resistors, pull-down resistors, signal filtering capacitors, power supply filtering capacitors, and protection transistors; the communication chip further includes: wake-up pins, power supply pins, communication pins, and ground pins; The pull-up resistor is connected in series between the main control module and the data input pin; The pull-down resistor is connected in series between the external power supply and the wake-up pin; The signal filtering capacitor and the protective tube are both connected in parallel between the communication pin and the ground pin; The first end of the power supply filter capacitor is electrically connected to the power supply pin and the external power supply, respectively, and the second end of the power supply filter capacitor is grounded.

7. The energy-saving sleep circuit according to any one of claims 1-6, characterized in that, The voltage regulator module is also electrically connected to an external power supply and the main control module, respectively. The voltage regulator module is used to obtain an initial voltage from the external power supply, convert the initial voltage into a target voltage, and output it to the main control module. The target voltage is within a preset voltage range.

8. The energy-saving sleep circuit according to claim 7, characterized in that, The communication module is also electrically connected to at least one functional module; The communication module is used to interact with the at least one functional module.

9. An energy-saving sleep mode device, characterized in that, The device includes: at least one functional module and an energy-saving sleep circuit as described in any one of claims 1-8; The at least one functional module is electrically connected to the energy-saving sleep circuit.

10. A driving device, characterized in that, include: The energy-saving sleep circuit according to any one of claims 1-8.

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