CN210222688U - Power management system startup and shutdown control circuit and robot - Google Patents
Power management system startup and shutdown control circuit and robot Download PDFInfo
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- CN210222688U CN210222688U CN201921351556.XU CN201921351556U CN210222688U CN 210222688 U CN210222688 U CN 210222688U CN 201921351556 U CN201921351556 U CN 201921351556U CN 210222688 U CN210222688 U CN 210222688U
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Abstract
A power management system startup and shutdown control circuit and a robot comprise a key module, a switch control module, a switch module, a direct current conversion module and a power-on maintaining signal generation module; the key module generates a key input signal according to the key input; the switch control module generates a power-on enabling signal according to the key input signal; the switch module is communicated with a power supply according to the power-on enabling signal and the power-on maintaining signal; the direct current conversion module generates a first power supply according to the power supply; the power-on maintaining signal generating module generates a power-on maintaining signal according to the first power supply; the power management system startup and shutdown control circuit can be applied to different occasions such as high voltage or low voltage, has high flexibility, avoids startup power-on jitter or false triggering caused by the influence of a common key circuit, and improves the stability and reliability of the power management system during startup and shutdown and power-on and power-off.
Description
Technical Field
The application belongs to the technical field of power management of robots, and particularly relates to a power management system startup and shutdown control circuit and a robot.
Background
With the rise of the robot industry, more and more robots appear on the market, and the robots replace manpower in various ways to reduce the labor burden of human beings. As a power supply core of the robot, a power management system of the robot must be reliable and practical in electrical safety, electromagnetic compatibility, functional expandability, and the like.
The traditional power management scheme of the robot at present has the problems of insufficient and timely protection, poor system anti-interference performance and the like. In the traditional power management scheme of the robot, a power on/off circuit for connecting or disconnecting a power-on power supply and a working power supply of a power management system is basically fixed in power on/off time, and most of the power on/off time can be used only under the condition of low voltage, so that the application occasions are limited, and the use is relatively solidified; in addition, the power-on jitter or false triggering caused by the influence of the common key circuit is easy to occur.
Therefore, the conventional technical scheme has the problems that the application of the power management system is limited, the flexibility is poor, and the power on and off jitter or false triggering caused by the influence of a common key circuit is easily caused during the startup process, so that the stability, the reliability and the practicability of the startup and shutdown process are poor.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the present application provides a power management system power on/off control circuit and a robot, which aim to solve the problem that the application context of a power management system in the conventional technical scheme is limited, the flexibility is poor, and the stability, reliability and practicability of the power on/off are poor due to power on jitter or false triggering caused by the influence of a common key circuit when the power management system is turned on.
A first aspect of an embodiment of the present application provides a power management system power on/off control circuit, where the power management system power on/off control circuit includes:
the key module is used for generating a key input signal according to key input;
the switch control module is connected with the key module and used for generating a power-on enabling signal according to the key input signal;
the switch module is connected with the switch control module and is used for communicating a power supply according to the power-on enabling signal and the power-on maintaining signal;
the direct current conversion module is connected with the switch module and used for generating a first power supply according to the power supply;
and the power-on maintaining signal generating module is connected with the direct current conversion module and the switch module and is used for generating the power-on maintaining signal according to the first power supply.
In one embodiment, the power management system power on/off control circuit further includes:
the isolation module is connected with the switch control module and used for generating a target key detection signal according to the original key detection signal;
the control module is connected with the isolation module and used for generating a power-off control signal according to the target key detection signal;
the switch control module is also used for generating the original key detection signal according to the key input signal;
the power-on maintaining signal generating module is further used for stopping generating the power-on maintaining signal according to the power-off control signal;
the switch module is further configured to turn off the power supply according to termination of the power-on maintaining signal.
In one embodiment, the power management system power on/off control circuit further includes:
and the surge protection module is connected with the switch module and used for carrying out surge protection on the power supply.
In one embodiment, the surge protection module comprises:
the primary surge protection unit is connected with the switch module and is used for performing surge protection on the voltage of the power supply;
and the secondary surge protection unit is connected with the primary surge protection unit and is used for carrying out surge protection on the current of the power supply.
In one embodiment, the switch module comprises a first field effect transistor, a second field effect transistor, a third field effect transistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor and a second capacitor;
the first end of the first resistor, the first end of the first capacitor and the grid electrode of the first field effect transistor are connected, the second end of the first resistor, the second end of the first capacitor and the source electrode of the first field effect transistor are connected with a power ground, the drain electrode of the first field effect transistor is connected with the second end of the second resistor, the first end of the third resistor, the first end of the second capacitor and the grid electrode of the second field effect transistor, the second end of the third resistor, the second end of the second capacitor and the source electrode of the second field effect transistor are connected with the power ground, the first end of the second resistor is connected with a second power supply, the drain electrode of the second field effect transistor is connected with the second end of the fourth resistor, the first end of the fourth resistor is connected with the grid electrode of the third field effect transistor, and the drain electrode of the third field effect transistor is connected with the first end of the fifth resistor;
the grid electrode of the first field effect transistor is an electrifying enabling signal input end of the switch module and an electrifying maintaining signal input end of the switch module;
the source electrode of the third field effect transistor is the power supply input end of the switch module;
and the second end of the fifth resistor is the power supply output end of the switch module.
In one embodiment, the switch control module includes a first switch control chip, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a third capacitor, a fourth capacitor, and a fifth capacitor;
the power end of the first switch control chip and the first end of the third capacitor are connected with a third power supply, the voltage reference end of the first switch control chip is connected with the first end of the fourth capacitor, the time delay input end of the first switch control chip is connected with the first end of the fifth capacitor, the second end of the third capacitor, the second end of the fourth capacitor and the second end of the fifth capacitor are connected with a power ground, the ground end of the first switch control chip is connected with the power ground, the terminal output end of the first switch control chip is connected with the second end of the seventh resistor, the reset end of the first switch control chip is connected with the second end of the eighth resistor, the key state output end of the first switch control chip is connected with the second end of the ninth resistor, and the comparator output end of the first switch control chip is connected with the second end of the tenth resistor, the first end of the seventh resistor, the first end of the eighth resistor, the first end of the ninth resistor and the first end of the tenth resistor are connected with the third power supply, and the enable end of the first switch control chip is connected with the first end of the sixth resistor;
a second end of the sixth resistor is a power-on enable signal output end of the switch control module;
the key input end of the first switch control chip is a key input signal input end of the switch control module;
and the key state output end of the first switch control chip is an original key detection signal output end of the switch control module.
In one embodiment, the power-on maintaining module comprises a signal relay, an eleventh resistor, a twelfth resistor, a fourth field effect transistor, a first diode, a first rectifying diode, a sixth capacitor and a seventh capacitor;
the anode of the first rectifying diode is connected with the second end of the eleventh resistor, the first end of the twelfth resistor and the grid of the fourth field effect transistor, a first end of the eleventh resistor is connected with the first power supply, a first end of the twelfth resistor and a source electrode of the fourth field effect transistor are connected with the power supply ground, the drain electrode of the fourth field effect transistor is connected with the anode of the first diode and the second end of the coil of the signal relay, the anode and cathode of the first diode, the first end of the sixth capacitor, the first end of the seventh capacitor and the first end of the coil of the signal relay are connected with a fourth power supply, the second end of the sixth capacitor and the second end of the seventh capacitor are connected with a power ground, and the first normally open contact end of the signal relay and the second normally open contact end of the signal relay are connected with the power ground;
the second ends of the first group of normally closed contacts of the signal relay and the second ends of the second group of normally closed contacts of the signal relay are jointly formed into an electrifying maintaining signal output end of the electrifying maintaining module;
and the cathode of the first rectifier diode is a power supply turn-off control signal input end of the power-on maintaining module.
In one embodiment, the primary surge protection unit comprises a first voltage dependent resistor and a first transient suppression diode;
the first end of the first piezoresistor and the first end of the first transient suppression diode are connected with the power supply, and the second end of the first piezoresistor and the second end of the first transient suppression diode are connected with the power ground.
In one embodiment, the switch module comprises an N-type MOS tube and a P-type MOS tube.
A second aspect of the embodiments of the present application provides a robot, where the robot includes the power management system on/off control circuit described above.
The power management system on-off control circuit generates a key input signal according to key input through the key module, the switch control module generates a power-on enabling signal according to the key input signal, the switch module is communicated with a power supply according to the power-on enabling signal and the power-on maintaining signal, the direct current conversion module generates a first power supply according to the power supply, and the power-on maintaining signal generation module generates a power-on maintaining signal according to the first power supply; the power supply management system startup and shutdown control circuit not only can automatically define startup and shutdown time, but also can be used in a high-voltage scene, so that the applicability and flexibility of the circuit are greatly enhanced; and because the integrated switch control chip and the specific power-on maintaining mode are used, the power-on jitter or false triggering caused by the influence of a common key circuit during starting up and powering down is avoided, and the stability and reliability of the power management system during starting up and powering down are improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a power management system on/off control circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of another structure of a power management system power on/off control circuit according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of another structure of a power management system power on/off control circuit according to an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a surge protection module according to an embodiment of the present application;
fig. 5 is a schematic circuit diagram of an example of a power management system power on/off control circuit according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
Referring to fig. 1, a schematic structural diagram of a power management system on/off control circuit according to an embodiment of the present application shows only parts related to the embodiment for convenience of description, and the following details are described:
a power management system startup and shutdown control circuit comprises a key module 11, a switch control module 12, a switch module 13, a direct current conversion module 14 and a power-on maintaining signal generation module 15.
The key module 11 is configured to generate a key input signal according to a key input; the switch control module 12 is connected with the key module 11 and is used for generating a power-on enabling signal according to the key input signal; the switch module 13 is connected with the switch control module 12 and used for communicating a power supply according to the power-on enabling signal and the power-on maintaining signal; the direct current conversion module 14 is connected with the switch module 13 and is used for generating a first power supply according to the power supply; the power-on maintaining signal generating module 15 is connected to the dc converting module 14 and the switching module 13, and is configured to generate a power-on maintaining signal according to the first power source.
Referring to fig. 2, in one embodiment, the power management system power on/off control circuit further includes an isolation module 16 and a control module 17.
The isolation module 16 is connected to the switch control module 12, and configured to generate a target key detection signal according to the original key detection signal; the control module 17 is connected with the isolation module 16 and used for generating a power-off control signal according to the target key detection signal; the switch control module 12 is further configured to generate an original key detection signal according to the key input signal; the power-on maintaining signal generating module 15 is further configured to stop generating a power-on maintaining signal according to the power-off control signal; the switch module 13 is also used to turn off the power supply according to the termination of the power-on maintenance signal.
When the power management system on-off control circuit works, the key module 11 generates a key input signal according to the key input, and the switch control module 12 generates an original key detection signal according to the key input signal; the isolation module 16 generates a target key detection signal according to the original key detection signal; the control module 17 generates a power-off control signal according to the target key detection signal; the power-on maintaining signal generating module 15 stops generating the power-on maintaining signal according to the power-off control signal; the switch module 13 turns off the power supply according to the termination of the power-on maintaining signal; therefore, the power-off function of the power management system on-off control circuit is realized.
In specific implementation, the isolation module 16 electrically isolates the switch control module 12, the switch module 13 and the control module 17, so that interference caused by electric connection among the switch control module, the switch control module and the control module is prevented, and the control precision and reliability of the power management system are improved.
Referring to fig. 3, in one embodiment, the power management system power on/off control circuit further includes a surge protection module 18.
The surge protection module 18 is connected to the switch module 13 and is used for performing surge protection on the power supply.
In a specific implementation, the surge protection module 18 can perform voltage surge protection and current surge protection on the power supply to ensure the stability and safety of the system power supply.
Referring to fig. 4, in one embodiment, surge protection module 18 includes a primary surge protection unit 181 and a secondary surge protection unit 182.
The primary surge protection unit 181 is connected to the switch module 13, and is configured to perform surge protection on the voltage of the power supply; the secondary surge protection unit 182 is connected to the primary surge protection unit 181, and is configured to perform surge protection on the current of the power supply.
In specific implementation, the voltage of the power supply is clamped to a certain magnitude by the primary surge protection unit 181 and controlled within an absolute safety range; the secondary surge protection unit 182 suppresses the current surge of the power supply and prevents the system circuit from being damaged by the instant current surge impact.
Referring to fig. 5, in one embodiment, the switch module 13 includes a first fet Q1, a second fet Q2, a third fet Q3, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, and a second capacitor C2.
The first end of the first resistor R1, the first end of the first capacitor C1 and the gate of the first fet Q1 are connected, the second end of the first resistor R1, the second end of the first capacitor C1 and the source of the first fet Q1 are connected to the power ground, the drain of the first fet Q1 is connected to the second end of the second resistor R2, the first end of the third resistor R3, the first end of the second capacitor C2 and the gate of the second fet Q2, the second end of the third resistor R3, the second end of the second capacitor C2 and the source of the second fet Q2 are connected to the power ground, the first end of the second resistor R2 is connected to the second power supply, the drain of the second fet Q2 is connected to the second end of the fourth resistor R4, the first end of the fourth resistor R4 is connected to the gate of the third fet Q3, and the drain of the third fet Q3 is connected to the drain of the fifth resistor R5.
The gate of the first fet Q1 is a power-on enable signal input of the switch module 13 and a power-on sustain signal input of the switch module 13.
The source of the third fet Q3 is the power supply input of the switch module 13.
The second terminal of the fifth resistor R5 is the power supply output terminal of the switch module 13.
Referring to fig. 5, in one embodiment, the switch control module 12 includes a first switch control chip U53, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a third capacitor C3, a fourth capacitor C4, and a fifth capacitor C5.
A power supply terminal VCC of the first switch control chip U53 and a first terminal of the third capacitor C3 are connected to a third power supply, a voltage reference terminal Vref of the first switch control chip U53 is connected to a first terminal of the fourth capacitor C4, a delay input terminal Csrd of the first switch control chip U53 is connected to a first terminal of the fifth capacitor C5, a second terminal of the third capacitor C3, a second terminal of the fourth capacitor C4, and a second terminal of the fifth capacitor C5 are connected to a power ground, a ground terminal GND of the first switch control chip U53 is connected to the power ground, a terminal output terminal # INT of the first switch control chip U53 is connected to a second terminal of the seventh resistor R7, a reset terminal # RST of the first switch control chip U53 is connected to a second terminal of the eighth resistor R8, a key state output terminal # PBout of the first switch control chip U53 is connected to a second terminal # PBout of the ninth resistor R9, a comparator output terminal # vcr 53 of the first switch control chip U53 is connected to a second terminal # vcr 10, the first end of the seventh resistor R7, the first end of the eighth resistor R8, the first end of the ninth resistor R9 and the first end of the tenth resistor R10 are connected to a third power supply, and the enable terminal EN of the first switch control chip U53 is connected to the first end of the sixth resistor R6.
The second terminal of the sixth resistor R6 is the power-up enable signal output terminal of the switch control module 12.
The key input terminal # PB of the first switch control chip U53 is a key input signal input terminal of the switch control module 12.
The key state output terminal # PBout of the first switch control chip U53 is the original key detection signal output terminal of the switch control module 12.
Referring to fig. 5, in one embodiment, the power-on maintaining signal generating module 15 includes a signal relay U1, an eleventh resistor R11, a twelfth resistor R12, a fourth fet Q4, a first diode D1, a first rectifying diode D2, a sixth capacitor C6, and a seventh capacitor C7.
An anode of the first rectifying diode D2 is connected to a second end of the eleventh resistor R11, a first end of the twelfth resistor R12 and a gate of the fourth field-effect transistor Q4, a first end of the eleventh resistor R11 is connected to a first power supply, a first end of the twelfth resistor R12 and a source of the fourth field-effect transistor Q4 are connected to a power ground, a drain of the fourth field-effect transistor Q4 is connected to an anode of the first diode D1 and a second end 8 of the coil of the signal relay U1, an anode cathode of the first diode D1, a first end of the sixth capacitor C6, a first end of the seventh capacitor C7 and a first end 1 of the coil of the signal relay U1 are connected to the fourth power supply, a second end of the sixth capacitor C6 and a second end of the seventh capacitor C7 are connected to the power ground, a first contact end 4 of the signal relay U1 and a second normally open contact end 5 of the signal relay U1 are connected to the power ground.
The second end 3 of the first set of normally closed contacts of the signal relay U1 and the second end 6 of the second set of normally closed contacts of the signal relay U1 together constitute a power-on maintenance signal output of the power-on maintenance signal generation module 15.
The cathode of the first rectifying diode D2 is the power-off control signal input terminal of the power-on maintenance signal generating module 15.
Referring to fig. 5, in one embodiment, the primary surge protection unit 181 includes a first voltage dependent resistor R28 and a first transient suppression diode D6.
The first end of the first piezoresistor R28 and the first end of the first transient suppression diode D6 are connected with the power supply, and the second end of the first piezoresistor R28 and the second end of the first transient suppression diode D6 are connected with the power ground.
In one embodiment, the switch module 13 includes an N-type MOS transistor and a P-type MOS transistor. Optionally, the first field effect transistor Q1 and the second field effect transistor Q2 are N-type MOS transistors, and the third field effect transistor Q3 is a P-type MOS transistor.
In a specific implementation, the secondary surge protection unit 182 includes a thirteenth resistor R13 and an eighth capacitor C8.
A first end of the thirteenth resistor R13 and a first end of the eighth capacitor C8 are connected to the power supply, and a second end of the thirteenth resistor R13 and a second end of the eighth capacitor C8 are connected to a gate of a third fet Q3.
The first voltage dependent resistor R28 can clamp the voltage of the power supply to a certain value, and the first transient suppression diode D6 can control the residual voltage leaked from the first voltage dependent resistor R28 to an absolute safety degree. The eighth capacitor C8 may be a chip capacitor, and the chip capacitor (the eighth capacitor C8) delays the on-time of the switching tube (the third field effect tube Q3) to suppress the current surge.
In specific implementation, the first power supply is 3V3_ SYS, the second power supply and the third power supply are both 5V _ STBY, and the fourth power supply is 5V _ MCU. Optionally, the second power supply, the third power supply, and the fourth power supply may be the same in size or different in size, and the first power supply, the second power supply, the third power supply, and the fourth power supply may be generated by the dc conversion module 14 through conversion according to the power supply.
The control module 17 includes an MCU (micro controller Unit).
The working principle of the power management system switch control circuit will be briefly described with reference to fig. 5 as follows:
when the key SW1 is not pressed, that is, when the key module 11 does not generate a key input signal, the first switch control chip U53 generates a high-level POWER-on enable signal by default, so that the first fet Q1 is turned on, the second fet Q2 is turned off, the third fet Q3 is turned off, the POWER supply 48V _ POWER _ IN is not turned on, and the system is IN a non-POWER-on state.
At the moment when the key SW1 is pressed, the first switch control chip U53 generates a low-level POWER-on enable signal according to the key input signal, so that the first fet Q1 is turned off, the second fet Q2 is turned on, and the third fet Q3 is turned on to supply the POWER supply 48V _ POWER _ IN.
Then, the dc conversion module 14 generates a first POWER supply 3V3_ SYS according to the POWER supply (48V), so that the fourth fet Q4 is turned on, the signal relay U1 is powered on to operate, the low-level POWER-on maintaining signal output from the second end 3 of the first set of normally closed contacts of the signal relay U1 and the second end 6 of the second set of normally closed contacts of the signal relay U1 pulls down the level of the gate of the first fet Q1, so that the first fet Q1 is turned off, the second fet Q2 is turned on, the third fet Q3 is powered on to the POWER supply 48V _ POWER _ IN, the system is powered on, and the POWER management system on/off control circuit is powered on to operate.
When the POWER management system POWER on/off control circuit is powered on to work, the first switch control chip U53 still detects the state of the key SW1, when the key SW1 is pressed again, the first switch control chip U53 generates an original key detection signal according to the key input signal, the original key detection signal is output through a key state output terminal # PBout of the first switch control chip U53, a target key test signal is generated through a fifth field effect tube Q42 and a high-speed optical coupler U52 and is output to the MCU through an output terminal 5 of the high-speed optical coupler U52, the MCU generates a low-level POWER off control signal according to the target detection signal, the level of the gate of the fourth field effect tube Q4 is reduced, so that the fourth field effect tube Q4 is cut off, the low-level POWER on maintaining signal is changed into a high-level POWER on maintaining signal, so that the first field effect tube Q1 is turned on, the second field effect tube Q2 is cut off, and the third field effect tube Q3 is also cut off, thereby cutting off the POWER supply 48V _ POL, the system completes the power down.
The power on/off operation is realized through a single key, the device cost is saved, the operation flow is simplified, and the time for turning on the power supply output and the power off time of the MCU can be autonomously controlled; by selecting a proper switching device, the on-off control circuit of the power management system can be suitable for various voltage input occasions, and the applicability and flexibility of the circuit are greatly enhanced; the integrated switch control chip and the specific power-on maintaining mode are used, the power-on jitter or false triggering caused by the influence of a common key circuit during starting up and down is avoided, and the stability and reliability of the power management system during starting up and down are improved.
A second aspect of the embodiments of the present application provides a robot, including the power management system on/off control circuit as described above.
The utility model discloses power management system of robot not only can independently define the on-off time, can use under the scene of high voltage moreover, and the stability and the reliability of robot on-off and upper and lower electricity are high.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.
Claims (10)
1. The utility model provides a power management system switching on and shutting down control circuit which characterized in that, power management system switching on and shutting down control circuit includes:
the key module is used for generating a key input signal according to key input;
the switch control module is connected with the key module and used for generating a power-on enabling signal according to the key input signal;
the switch module is connected with the switch control module and is used for communicating a power supply according to the power-on enabling signal and the power-on maintaining signal;
the direct current conversion module is connected with the switch module and used for generating a first power supply according to the power supply;
and the power-on maintaining signal generating module is connected with the direct current conversion module and the switch module and is used for generating the power-on maintaining signal according to the first power supply.
2. The power management system on/off control circuit of claim 1, wherein the power management system on/off control circuit further comprises:
the isolation module is connected with the switch control module and used for generating a target key detection signal according to the original key detection signal;
the control module is connected with the isolation module and used for generating a power-off control signal according to the target key detection signal;
the switch control module is also used for generating the original key detection signal according to the key input signal;
the power-on maintaining signal generating module is further used for stopping generating the power-on maintaining signal according to the power-off control signal;
the switch module is further configured to turn off the power supply according to termination of the power-on maintaining signal.
3. The power management system on/off control circuit of claim 1, wherein the power management system on/off control circuit further comprises:
and the surge protection module is connected with the switch module and used for carrying out surge protection on the power supply.
4. The power management system on/off control circuit of claim 3, wherein the surge protection module comprises:
the primary surge protection unit is connected with the switch module and is used for performing surge protection on the voltage of the power supply;
and the secondary surge protection unit is connected with the primary surge protection unit and is used for carrying out surge protection on the current of the power supply.
5. The power management system on-off control circuit of claim 1, wherein the switch module comprises a first field effect transistor, a second field effect transistor, a third field effect transistor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, and a second capacitor;
the first end of the first resistor, the first end of the first capacitor and the grid electrode of the first field effect transistor are connected, the second end of the first resistor, the second end of the first capacitor and the source electrode of the first field effect transistor are connected with a power ground, the drain electrode of the first field effect transistor is connected with the second end of the second resistor, the first end of the third resistor, the first end of the second capacitor and the grid electrode of the second field effect transistor, the second end of the third resistor, the second end of the second capacitor and the source electrode of the second field effect transistor are connected with the power ground, the first end of the second resistor is connected with a second power supply, the drain electrode of the second field effect transistor is connected with the second end of the fourth resistor, the first end of the fourth resistor is connected with the grid electrode of the third field effect transistor, and the drain electrode of the third field effect transistor is connected with the first end of the fifth resistor;
the grid electrode of the first field effect transistor is an electrifying enabling signal input end of the switch module and an electrifying maintaining signal input end of the switch module;
the source electrode of the third field effect transistor is the power supply input end of the switch module;
and the second end of the fifth resistor is the power supply output end of the switch module.
6. The power management system on-off control circuit of claim 1, wherein the switch control module comprises a first switch control chip, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, a third capacitor, a fourth capacitor, and a fifth capacitor;
the power end of the first switch control chip and the first end of the third capacitor are connected with a third power supply, the voltage reference end of the first switch control chip is connected with the first end of the fourth capacitor, the time delay input end of the first switch control chip is connected with the first end of the fifth capacitor, the second end of the third capacitor, the second end of the fourth capacitor and the second end of the fifth capacitor are connected with a power ground, the ground end of the first switch control chip is connected with the power ground, the terminal output end of the first switch control chip is connected with the second end of the seventh resistor, the reset end of the first switch control chip is connected with the second end of the eighth resistor, the key state output end of the first switch control chip is connected with the second end of the ninth resistor, and the comparator output end of the first switch control chip is connected with the second end of the tenth resistor, the first end of the seventh resistor, the first end of the eighth resistor, the first end of the ninth resistor and the first end of the tenth resistor are connected with the third power supply, and the enable end of the first switch control chip is connected with the first end of the sixth resistor;
a second end of the sixth resistor is a power-on enable signal output end of the switch control module;
the key input end of the first switch control chip is a key input signal input end of the switch control module;
and the key state output end of the first switch control chip is an original key detection signal output end of the switch control module.
7. The power management system on-off control circuit of claim 1, wherein the power-on maintaining module comprises a signal relay, an eleventh resistor, a twelfth resistor, a fourth field effect transistor, a first diode, a first rectifying diode, a sixth capacitor, and a seventh capacitor;
the anode of the first rectifying diode is connected with the second end of the eleventh resistor, the first end of the twelfth resistor and the grid of the fourth field effect transistor, a first end of the eleventh resistor is connected with the first power supply, a first end of the twelfth resistor and a source electrode of the fourth field effect transistor are connected with the power supply ground, the drain electrode of the fourth field effect transistor is connected with the anode of the first diode and the second end of the coil of the signal relay, the anode and cathode of the first diode, the first end of the sixth capacitor, the first end of the seventh capacitor and the first end of the coil of the signal relay are connected with a fourth power supply, the second end of the sixth capacitor and the second end of the seventh capacitor are connected with a power ground, and the first normally open contact end of the signal relay and the second normally open contact end of the signal relay are connected with the power ground;
the second ends of the first group of normally closed contacts of the signal relay and the second ends of the second group of normally closed contacts of the signal relay are jointly formed into an electrifying maintaining signal output end of the electrifying maintaining module;
and the cathode of the first rectifier diode is a power supply turn-off control signal input end of the power-on maintaining module.
8. The power management system on/off control circuit of claim 4, wherein the primary surge protection unit comprises a first voltage dependent resistor and a first transient suppression diode;
the first end of the first piezoresistor and the first end of the first transient suppression diode are connected with the power supply, and the second end of the first piezoresistor and the second end of the first transient suppression diode are connected with the power ground.
9. The power management system on-off control circuit of claim 1, wherein the switch module comprises an N-type MOS transistor and a P-type MOS transistor.
10. A robot, characterized in that the robot comprises a power management system on-off control circuit according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921351556.XU CN210222688U (en) | 2019-08-19 | 2019-08-19 | Power management system startup and shutdown control circuit and robot |
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| CN201921351556.XU CN210222688U (en) | 2019-08-19 | 2019-08-19 | Power management system startup and shutdown control circuit and robot |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596163A (en) * | 2020-06-26 | 2020-08-28 | 深圳市星润达成科技有限公司 | Key detection circuit and method |
| CN111697664A (en) * | 2020-06-30 | 2020-09-22 | 深圳优地科技有限公司 | Charging protection circuit of robot and robot |
-
2019
- 2019-08-19 CN CN201921351556.XU patent/CN210222688U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111596163A (en) * | 2020-06-26 | 2020-08-28 | 深圳市星润达成科技有限公司 | Key detection circuit and method |
| CN111697664A (en) * | 2020-06-30 | 2020-09-22 | 深圳优地科技有限公司 | Charging protection circuit of robot and robot |
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