Self-starting control device and system

Abstract

The invention relates to a self-starting control device and system. The self-starting control device comprises a first control module and a trigger module, and first ports of the first control module and the trigger module are respectively connected to a first potential point; the first control module is used for controlling the change rate of the first voltage of the first potential point to the ground; the trigger module is used for changing a first port of a to-be-started module into a first level signal lasting for a first time length through a second port of the trigger module based on a first voltage of a first potential point, the first time length is greater than a first threshold value, and the first level signal lasting for the first time length is used for starting the to-be-started module; the first duration is negatively correlated with the change rate of the first voltage. The first control module adjusts the continuous first duration of the first level, and then the second port of the trigger module changes the first port of the to-be-started module into the first level signal lasting for the first duration, so that the to-be-started module is started, and the situation that the to-be-started module is controlled to be started by occupying input and output ports such as a micro-control unit is avoided.

Description

Technical Field

[0001] The present application relates to the field of control technology, and in particular to a self-starting control device and system. Background Art

[0002] With the rapid development of electronic information technology, some modules require control signals with specific timing to start. In traditional technology, a microcontroller unit (MCU) can be used to send control signals with specific timing to control the start of some modules. However, sending control signals through the MCU requires occupying the input and output ports of the MCU. Summary of the invention

[0003] Based on this, it is necessary to provide a self-starting control device and system to solve the problem of occupying input and output ports to control the startup of the module to be started, so as to reduce the input and output ports of the micro control unit etc. occupied by controlling the startup of the module to be started.

[0004] In the first aspect, an embodiment of the present application provides a self-starting control device, which includes a first control module and a trigger module, wherein the first control module and the first port of the trigger module are respectively connected to a first potential point; the first control module is used to control the rate of change of a first voltage from the first potential point to the ground; the trigger module is used to change the first port of a module to be started into a first level signal lasting a first time length through the second port of the trigger module based on the first voltage of the first potential point, the first time length is greater than a first threshold, the first level signal lasting the first time length is used to start the module to be started, and the first time length is negatively correlated with the rate of change of the first voltage.

[0005] In one embodiment, the first level signal is a low level signal, and the trigger module includes a first transistor; the first port of the first transistor is connected to the first potential point, the second port of the first transistor is grounded, and the third port of the first transistor is connected to the first port of the module to be started; the first control module includes a power supply end and an output end, the power supply end of the first control module is used for an external power supply, and the output end is connected to the first potential point, and the first control module is used to input a first voltage to the first potential point through the output end of the first control module based on the change rate of the first voltage, and the change rate of the first voltage is the discharge rate of the first control module; the first transistor turns on or off the second port of the first transistor and the third port of the first transistor based on the first voltage; when the third port of the first transistor and the second port of the first transistor are in the on state, the first port of the module to be started is turned on to the ground, and the turn-on time of the second port of the first transistor and the third port of the first transistor matches the first time.

[0006] In one embodiment, the first control module further includes a first resistor and a first capacitor; the first end of the first resistor and the second end of the first capacitor are respectively connected to the output end, and the second end of the first resistor is grounded; the first end of the first capacitor is connected to the power supply end.

[0007] In one embodiment, the first transistor is an N-channel transistor; when the first voltage is greater than or equal to a first conduction threshold, the third port of the N-channel transistor and the second port of the N-channel transistor are turned on, and when the first voltage is less than the first conduction threshold, the third port of the first transistor and the second port of the first transistor are cut off.

[0008] In one embodiment, the N-channel transistor is an N-channel MOS transistor, the first port of the first transistor is the gate of the N-channel MOS transistor, the second port of the first transistor is the source of the N-channel MOS transistor, and the third port of the first transistor is the drain of the N-channel MOS transistor.

[0009] In one embodiment, the N-channel transistor is an N-channel triode, the first port of the first transistor is the base of the N-channel triode, the second port of the first transistor is the emitter of the N-channel triode, and the third port of the first transistor is the collector of the N-channel triode.

[0010] In one embodiment, the self-starting control device also includes a delay module, the delay module includes a second transistor and a second control module; the first port of the second transistor is connected to the second potential point, and the second port of the second transistor is connected to the power supply; the first control module includes a first port and an output end, the first port of the first control module is connected to the third port of the second transistor, the output end of the first control module is connected to the first potential point, the first control module is used to input a first voltage to the first potential point through the output end of the first control module based on the change rate of the first voltage, and the change rate of the first voltage is the discharge rate of the first control module; the second control module includes a power supply end and an output end, the power supply end of the second control module is used for an external power supply, the output end of the second control module is connected to the second potential point, the The second control module is used to input a second voltage to the second potential point through the output end of the second control module based on a second change rate, and the second change rate is the discharge rate of the second control module; the second transistor turns on or off the second port of the second transistor and the third port of the second transistor based on the second voltage; when the third port of the second transistor and the second port of the second transistor are in the off state, the first port of the module to be started is cut off to the ground, and when the third port of the first transistor and the second port of the first transistor are in the on state, the first port of the module to be started is turned on to the ground, the turn-on time of the second port of the first transistor and the third port of the first transistor matches the first time, and the turn-off time of the second port of the second transistor and the third port of the second transistor matches the second time.

[0011] In one embodiment, the first control module further includes a first resistor and a first capacitor, and the second control module further includes a second resistor and a second capacitor; the first end of the first resistor and the second end of the first capacitor are respectively connected to the output end of the first control module, and the second end of the first resistor is grounded; the first end of the first capacitor is connected to the first port of the first control module; the first end of the second resistor and the second end of the second capacitor are respectively connected to the output end of the second control module, and the second end of the second resistor is grounded; the first end of the second capacitor is connected to the power supply end of the second control module.

[0012] In one embodiment, the first transistor is an N-channel transistor; when the first voltage is greater than or equal to a first conduction threshold, the third port of the N-channel transistor and the second port of the N-channel transistor are turned on, and when the first voltage is less than the first conduction threshold, the third port of the first transistor and the second port of the first transistor are cut off; the second transistor is a P-channel transistor; when the second voltage is greater than or equal to a first value, the third port of the P-channel transistor and the second port of the P-channel transistor are cut off, and when the second voltage is less than a first value, the third port of the second transistor and the second port of the second transistor are turned on, and the first value is the difference between the power supply voltage and the second conduction threshold of the second transistor.

[0013] In one embodiment, the N-channel transistor is an N-channel MOS tube, the first port of the first transistor is the gate of the N-channel MOS tube, the second port of the first transistor is the source of the N-channel MOS tube, and the third port of the first transistor is the drain of the N-channel MOS tube; the P-channel transistor is a P-channel MOS tube, the first port of the second transistor is the gate of the P-channel MOS tube, the second port of the second transistor is the source of the P-channel MOS tube, and the third port of the second transistor is the drain of the P-channel MOS tube.

[0014] In one embodiment, the N-channel transistor is an N-channel transistor, the first port of the first transistor is the base of the N-channel transistor, the second port of the first transistor is the emitter of the N-channel transistor, and the third port of the first transistor is the collector of the N-channel transistor; the P-channel transistor is a P-channel transistor, the first port of the second transistor is the base of the P-channel transistor, the second port of the second transistor is the emitter of the P-channel transistor, and the third port of the second transistor is the collector of the P-channel transistor.

[0015] In one embodiment, the self-starting control device further includes a third resistor, a first end of the third resistor is connected to the first potential point, and a second end of the third resistor is connected to the base of the N-channel transistor.

[0016] In one embodiment, the trigger module includes a comparator, the first control module includes a third control module and a fourth control module, the first potential point includes a third potential point and a fourth potential point; the inverting input terminal of the comparator is connected to the third potential point, and the non-inverting input terminal of the comparator is connected to the fourth potential point; the third control module includes a power supply terminal and an output terminal, the power supply terminal of the third control module is used for an external power supply, the output terminal of the third control module is connected to the third potential point, the third control module is used to input a third voltage to the third potential point through the output terminal of the third control module based on a third change rate, and the fourth control module includes a power supply terminal and an output terminal , the power supply end of the fourth control module is used for an external power supply, the output end of the fourth control module is connected to the fourth potential point, the fourth control module is used to input a fourth voltage to the fourth potential point through the output end of the fourth control module based on a fourth change rate, the third change rate is the discharge rate of the third control module, the fourth change rate is the discharge rate of the fourth control module, and the third change rate is less than the fourth change rate; the output port of the comparator is used to send a first level signal lasting a first duration to the module to be started when the third voltage is less than the fourth voltage, and the first duration is the duration during which the third voltage is less than the fourth voltage.

[0017] In one embodiment, the third control module also includes a fourth resistor and a third capacitor, and the fourth control module also includes a fifth resistor and a fourth capacitor; the first end of the fourth resistor and the second end of the third capacitor are respectively connected to the output end of the third control module, and the second end of the fourth resistor is grounded; the first end of the third capacitor is connected to the power supply end of the third control module; the first end of the fifth resistor and the second end of the fourth capacitor are respectively connected to the output end of the fourth control module, and the second end of the fifth resistor is grounded; the first end of the fourth capacitor is connected to the power supply end of the fourth control module.

[0018] In one embodiment, the third control module also includes a first diode, and the fourth control module also includes a second diode; the cathode of the first diode is connected to the output end of the third control module, and the anode of the first diode is connected to the second end of the third capacitor; the cathode of the second diode is connected to the first end of the fifth resistor, and the anode of the second diode is connected to the output end of the fourth control module; the output port of the comparator is used to send a second level signal lasting a third duration to the module to be started when the third voltage is greater than or equal to the fourth voltage, and to send a first level signal lasting a first duration to the module to be started when the third voltage is less than the fourth voltage, the third duration being the duration during which the third voltage is greater than or equal to the fourth voltage, and the first duration being the duration during which the third voltage is less than the fourth voltage.

[0019] In one embodiment, the third control module also includes a sixth resistor and a fifth capacitor, and the fourth control module also includes a seventh resistor and a sixth capacitor; the second end of the sixth resistor and the first end of the fifth capacitor are respectively connected to the output end of the third control module, and the first end of the sixth resistor is connected to the power supply end of the third control module; the second end of the fifth capacitor is grounded; the second end of the seventh resistor and the first end of the sixth capacitor are respectively connected to the output end of the fourth control module, and the first end of the seventh resistor is connected to the power supply end of the fourth control module; the second end of the sixth capacitor is grounded.

[0020] In one embodiment, the third control module also includes a third diode, and the fourth control module also includes a fourth diode; the cathode of the third diode is connected to the output end of the third control module, and the anode of the third diode is connected to the second end of the sixth resistor; the cathode of the fourth diode is connected to the first end of the sixth capacitor, and the anode of the fourth diode is connected to the output end of the fourth control module; the output port of the comparator is used to send a second level signal lasting a third duration to the module to be started when the third voltage is greater than or equal to the fourth voltage, and to send a first level signal lasting a first duration to the module to be started when the third voltage is less than the fourth voltage.

[0021] In one embodiment, the first level signal includes a low level signal.

[0022] In a second aspect, an embodiment of the present application provides a self-starting system, which includes a module to be started, a power supply module and a self-starting control device as described in the first aspect; the self-starting control device is respectively connected to the module to be started and the power supply module, and is used to generate a first level signal for triggering the start of the module to be started if a power signal sent by the power supply module is detected.

[0023] The self-starting control device provided in the embodiment of the present application controls the rate of change of the first voltage of the first potential point to the ground through the first control module, thereby adjusting the first duration of the first level, and then changes the first port of the module to be started to the first level signal lasting for the first duration through the second port of the trigger module, thereby starting the module to be started, avoiding occupying the input and output ports of the micro control unit and the like to control the startup of the module to be started. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the structure of a self-starting control device provided in an embodiment of the present application is shown;

[0025] Figure 2 A schematic structural diagram of a self-starting control device provided by another embodiment of the present application is shown;

[0026] Figure 3 A schematic diagram of the structure of a self-starting control device provided by another embodiment of the present application is shown;

[0027] Figure 4 A structural schematic diagram of a self-starting control device provided in yet another embodiment of the present application is shown;

[0028] Figure 5 A schematic diagram of the structure of a self-starting control device provided by another embodiment of the present application is shown;

[0029] Figure 6 A voltage variation relationship diagram in an embodiment of the present application is shown;

[0030] Figure 7 A schematic diagram of the structure of a self-starting control device provided by another embodiment of the present application is shown;

[0031] Figure 8 A schematic diagram of the structure of a self-starting control device provided by another embodiment of the present application is shown;

[0032] Fig. 9 A schematic diagram of the structure of a self-starting control device provided by another embodiment of the present application is shown;

[0033] Fig.10 A schematic diagram of the structure of a self-starting control device provided by another embodiment of the present application is shown;

[0034] Fig.11 A voltage variation relationship diagram in another embodiment of the present application is shown;

[0035] Fig.12 A schematic diagram of the structure of a self-starting control device provided by another embodiment of the present application is shown;

[0036] Fig.13A schematic diagram of the structure of a self-starting control device provided by another embodiment of the present application is shown;

[0037] Fig.14 A schematic diagram of the structure of a self-starting system provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0038] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0039] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0044] With the rapid development of electronic information technology, some modules require control signals with specific timing to start. At present, a microcontroller unit can be used to send control signals with specific timing to control the start of some modules. However, sending control signals through a microcontroller unit requires occupying the input and output ports of the microcontroller unit. How to control the start of a module without occupying the input and output ports of the microcontroller unit is an urgent problem to be solved.

[0045] At present, the microcontroller unit can be connected to the module to be started, wherein the module to be started is a module that needs to be started, for example, an Internet of Things communication module, an Internet of Things video acquisition module, an Internet of Things audio acquisition module, etc. Thus, the microcontroller unit can send a control signal through the input and output ports, and the control signal can be used to control the module to be started to start working. After obtaining the control signal, the module to be started can respond to the control signal to start working.

[0046] However, the inventors found in their research that the method of outputting control signals through a micro control unit requires occupying the input and output ports of the micro control unit.

[0047] Therefore, in order to solve or partially solve the above problems, the present application provides a self-starting control device and system.

[0048] See also Figure 1 , Figure 1A structural schematic diagram of a self-starting control device provided in an embodiment of the present application is shown. The self-starting control device 100 includes a first control module 110 and a trigger module 120. The first ports 121 of the first control module 110 and the trigger module 120 are respectively connected to the first potential point 191.

[0049] In some embodiments, the voltage value of the first potential point 191 may be a first voltage, and it is easy to understand that the first voltage refers to the voltage value of the first potential point 191 to the ground. The first control module 110 may be used to control the rate of change of the first voltage of the first potential point 191 to the ground. For example, the first control module 110 may be a module including a resistor and a capacitor, so that the rate of change of the first voltage of the first potential point 191 to the ground controlled by the first control module may be achieved by adjusting the resistance value of the resistor and the capacitance value of the capacitor.

[0050] Since the first port of the module to be started needs to obtain a first level signal for a certain length of time before it can be started normally, if a first level signal for a certain length of time is directly sent to the first port of the module to be started through a micro control unit or an integrated circuit chip, etc., so as to control the normal startup of the module to be started, the input and output ports of the micro control unit or the integrated circuit chip need to be occupied. Therefore, the first port of the module to be started can be changed into a first level signal through the trigger module 120, so that the input and output ports of the micro control unit or the integrated circuit chip do not need to be occupied.

[0051] The module to be started 130 may be an Internet of Things communication module, an Internet of Things video acquisition module, an Internet of Things audio acquisition module, etc. The first port of the module to be started 130 may be a PWRKEY port.

[0052] Please continue reading Figure 1 , Figure 1 The system also includes a module to be started 130, and a first port 131 of the module to be started 130 is connected to a second port 122 of the trigger module 120. Specifically, the trigger module 120 can be used to change the first port 131 of the module to be started 130 to a first level signal lasting a first time length through the second port 122 of the trigger module 120 based on a first voltage at a first potential point, wherein the first time length is greater than a first threshold value, and the first level signal lasting the first time length is used to start the module to be started.

[0053] Optionally, the startup module 130 may further include a power supply terminal 132 , and the power supply terminal 132 may be used for an external power supply.

[0054] It is easy to understand that, for different modules 130 to be started, at the start-up time, the first duration of the first level signal that the first port 131 of the start-up module 130 needs to obtain is different. For example, for some modules 130 to be started, the required first duration is at least 200ms, and for other modules 130 to be started, the required first duration is at least 500ms. Therefore, the first threshold value can be set based on the shortest time of the first level signal that the first port 131 needs to obtain at the start-up time of different modules 130 to be started, so that when the first duration is greater than the first threshold value, it can be ensured that the second port 121 of the trigger module 120 changes the first port 131 of the module 130 to be started to the first level signal that lasts for the first duration, so that the module 130 to be started can be started normally.

[0055] Furthermore, since the first port 131 of the module to be started 130 changes to the first level signal is determined by the first voltage of the first potential point, the change rate of the first voltage of the first potential point to the ground will affect the first duration of the first level signal. In some embodiments, the first duration is negatively correlated with the change rate of the first voltage. That is, the greater the change rate of the first voltage, the shorter the first duration; if the change rate of the first voltage is smaller, the first duration is longer.

[0056] As can be seen from the above introduction, the first voltage change rate can be controlled by the first control module 110 , so that the first duration can be controlled by the first control module 110 to match different modules 130 to be started.

[0057] Optional, see Figure 2 , Figure 2 A schematic structural diagram of a self-starting control device provided in an embodiment of the present application is shown. The trigger module in the self-starting control device 100 includes a first transistor 210 , and the self-starting control device 100 also includes a first control module 110 .

[0058] In some implementations, the first level signal may be a low level signal. It should be noted that in the embodiment of the present application, the low level signal is 0V.

[0059] The first port 211 of the first transistor 210 is connected to the first potential point 191 , the second port 212 of the first transistor 210 is grounded, and the third port 213 of the first transistor 210 is connected to the first port 131 of the module to be started 130 .

[0060] Further, the first control module 110 may include a power supply terminal 111 and an output terminal 112, the power supply terminal 111 is used for an external power supply 240, specifically, it can be connected to the first port 241 of the power supply 240, and the output terminal 112 is connected to the first potential point 191. The first control module 110 can be used to input a first voltage to the first potential point through the output terminal 112 based on the rate of change of the first voltage, wherein the rate of change of the first voltage is the discharge rate of the first control module. Specifically, the rate of change of the first voltage is related to the resistance value of the resistor and the capacitance value of the capacitor included in the first control module.

[0061] It is easy to understand that the second port 212 of the first transistor 210 is grounded, so the voltage of the second port 212 of the first transistor 210 is 0V, and the first port 211 of the first transistor 210 is connected to the first potential point 191. Therefore, when the voltage difference between the first port 211 of the first transistor 210 and the second port 212 of the first transistor 210 is greater than or equal to the first conduction threshold, the first transistor 210 can be turned on, specifically, the second port 212 of the first transistor 210 and the third port 213 of the first transistor 210 can be turned on. When the voltage difference between the first port 211 of the first transistor 210 and the second port of the first transistor 210 is less than the first conduction threshold, the first transistor 210 can be turned off, specifically, the second port 212 of the first transistor 210 and the third port 213 of the first transistor 210 can be turned off. The voltage difference between the first port 211 of the first transistor 210 and the second port 210 is the first voltage. Therefore, the first transistor 210 can turn on or off the second port 212 of the first transistor 210 and the third port 213 of the first transistor 210 based on the first voltage.

[0062] Thus, when the third port 213 of the first transistor 210 and the second port 212 of the first transistor 210 are in the on state, the first port 131 of the module to be started 130 connected to the third port 213 of the first transistor 210 is connected to the ground connected to the second port 212 of the first transistor 210, so that the first port 131 of the module to be started 130 is connected to the ground. In other words, the first transistor 210 changes the first port 131 of the module to be started 130 into a first level signal.

[0063] The duration of the first level signal is the first duration, and the first duration matches the conduction duration of the second port 212 of the first transistor 210 and the third port 213 of the first transistor 210. Exemplarily, the first duration may be equal to the conduction duration of the second port 212 of the first transistor 210 and the third port 213 of the first transistor 210.

[0064] For some embodiments, the first transistor 210 can be an N-channel transistor, so that when the first voltage is greater than or equal to the first conduction threshold, the third port of the N-channel transistor and the second port of the N-channel transistor are turned on, and when the first voltage is less than the first conduction threshold, the third port of the N-channel transistor and the second port of the N-channel transistor are cut off.

[0065] For example, the N-channel transistor may be an N-channel MOS transistor, so that the first port 211 of the first transistor 210 is the gate of the N-channel MOS transistor, the second port 212 of the first transistor 210 is the source of the N-channel MOS transistor, and the third port 213 of the first transistor 210 is the drain of the N-channel MOS transistor. Thus, when the first voltage is greater than or equal to the first conduction threshold, the source of the N-channel MOS transistor and the drain of the N-channel MOS transistor are turned on, and when the first voltage is less than the first conduction threshold, the source of the N-channel MOS transistor and the drain of the N-channel MOS transistor are turned off.

[0066] For another example, the N-channel transistor may also be an N-channel triode, the first port 211 of the first transistor 210 is the base of the N-channel triode, the second port 212 of the first transistor 210 is the emitter of the N-channel triode, and the third port 213 of the first transistor 210 is the collector of the N-channel triode. When the first voltage is greater than or equal to the first conduction threshold, the emitter of the N-channel triode and the collector of the N-channel triode are turned on, and when the first voltage is less than the first conduction threshold, the emitter of the N-channel triode and the collector of the N-channel triode are turned off.

[0067] For some other embodiments, the first transistor 210 may also be a P-channel transistor, for example, the P-channel transistor may be a P-channel MOS transistor, so that the first port 211 of the first transistor 210 is the gate of the P-channel MOS transistor, the second port 212 of the first transistor 210 is the drain of the P-channel MOS transistor, and the third port 213 of the first transistor 210 is the source of the P-channel MOS transistor. For another example, the P-channel transistor may also be a P-channel triode, the first port 211 of the first transistor 210 is the base of the P-channel triode, the second port 212 of the first transistor 210 is the collector of the P-channel triode, and the third port 213 of the first transistor 210 is the emitter of the P-channel triode.

[0068] Optionally, the power supply end 132 of the module to be started 130 may also be connected to the first port 241 of the power supply 240 .

[0069] See also Figure 3 , Figure 3A structural schematic diagram of a self-starting control device provided in an embodiment of the present application is shown. In the self-starting control device 100 , a trigger module includes a first transistor 210 , and a first control module 110 also includes a first resistor R1 and a first capacitor C1 .

[0070] The first end 311 of the first resistor R1 and the second end 322 of the first capacitor C1 are respectively connected to the output end 112 of the first control module 110 , and the second end 312 of the first resistor R1 is grounded.

[0071] If the power supply terminal 111 of the first control module 110 obtains the power supply voltage sent by the power supply 241, then the voltages of the first terminal 311 and the second terminal 312 of the first capacitor C1 are instantly charged to the power supply voltage, so the voltage output by the second terminal 322 of the first capacitor C1 connected to the output terminal 112 of the first control module 110 is the power supply voltage, and the first voltage of the first potential point 191 is the power supply voltage. At this time, the voltage of the first port 211 of the first transistor 210 is also the power supply voltage, and the voltage of the second port 212 of the first transistor 210 is 0V. At this time, the difference between the voltage of the first port 211 of the first transistor 210 and the voltage of the second port 212 of the first transistor 210 is greater than the first conduction threshold of the first transistor 210, so the second port 212 of the first transistor 210 and the third port 213 of the first transistor 210 are turned on, so that the first port 131 of the module to be started 130 is turned on to the ground.

[0072] Furthermore, the first voltage of the first potential point 191 will gradually decrease over time until the difference between the voltage of the first port 211 of the first transistor 210 and the voltage of the second port 212 of the first transistor 210 is less than the first conduction threshold of the first transistor 210, then the second port 212 of the first transistor 210 and the third port 213 of the first transistor 210 are cut off, so that the first port 131 of the module to be started 130 is not conductive to the ground.

[0073] Optionally, the power supply end 132 of the module to be started 130 may also be connected to the first port 241 of the power supply 240 .

[0074] Optional, see Figure 4 , showing a structural schematic diagram of a self-starting control device provided in an embodiment of the present application, wherein the trigger module in the self-starting control device 100 includes a first transistor 210, and the self-starting control device 100 also includes a delay module 490, and the delay module 490 includes a second transistor 220 and a second control module 420.

[0075] The delay module 490 is used to connect to the first port 411 of the first control module 410 and externally connect to the power source 240. The delay module 490 can delay the signal output by the power source 240 and transmit it to the first port 411 of the first control module 410.

[0076] The first port 211 of the first transistor 210 is connected to the first potential point 191, the second port 212 of the first transistor 210 is grounded, and the third port 213 of the first transistor 210 is connected to the first port 131 of the module to be started 130. The first port 221 of the second transistor 220 is connected to the second potential point 192, and the second port 222 of the second transistor 220 is connected to the power supply.

[0077] The voltage of the second potential point 192 may be a second voltage, which is similar to the first voltage, and the second voltage is the voltage of the second potential point 192 to the ground.

[0078] Further, the first control module 410 may include a first port 411 and an output terminal 412. The first port 411 of the first control module 410 is connected to the third port 223 of the second transistor 220, and the output terminal 412 of the first control module 410 is connected to the first potential point 191. The first control module 410 is used to input the first voltage to the first potential point 191 through the output terminal 412 of the first control module 410 based on the change rate of the first voltage. The change rate of the first voltage is the discharge rate of the first control module 410.

[0079] In some embodiments, the delay module 490 can implement signal delay through the second transistor 220 and the second control module 420. Specifically, the second control module 420 includes a power supply terminal 421 and an output terminal 422. The power supply terminal 421 of the second control module 420 is used for the external power supply 240. The output terminal 422 of the second control module 420 is connected to the second potential point 192. The second control module 420 is used to input a second voltage to the second potential point 192 through the output terminal 422 of the second control module 420 based on a second change rate. The second change rate is the discharge rate of the second control module. Then, the signal delay can be adjusted based on the second change rate.

[0080] It should be noted that the delay unit 490 may also be composed of other reasonable components to achieve the function of signal delay, such as through an LC circuit.

[0081] Similar to the first transistor 210 described in the above embodiment, the second port 222 of the second transistor 220 is connected to the power supply 240, specifically connected to the first port 241 of the power supply 240. Therefore, the voltage of the second port 222 of the second transistor 220 is the power supply voltage, and the first port 221 of the second transistor 220 is connected to the second potential point 192. Therefore, when the voltage difference between the second port 222 of the second transistor 220 and the first port 221 of the second transistor 220 is less than the second conduction threshold, the second transistor 220 can be turned off, specifically, the second port 222 of the second transistor 220 and the third port 223 of the second transistor 220 can be turned off. When the voltage difference between the second port 222 of the second transistor 220 and the first port 221 of the second transistor 220 is greater than or equal to the second conduction threshold, the second transistor 220 can be turned on, specifically, the second port 222 of the second transistor 220 and the third port 223 of the second transistor 220 can be turned on. Therefore, the second transistor 220 may turn on or off the second port 222 of the second transistor 220 and the third port 223 of the second transistor 220 based on the second voltage.

[0082] Thus, when the third port 223 of the second transistor 220 and the second port 222 of the second transistor 220 are in the off state, the third port 213 of the first transistor 210 and the second port 212 of the first transistor 210 are cut off, so that the first port 131 of the module to be started 130 is cut off from the ground. When the third port 213 of the first transistor 210 and the second port 212 of the first transistor 210 are in the on state, the first port 131 of the module to be started 130 is turned on to the ground. That is, the first transistor 210 changes the first port 131 of the module to be started 130 into a first level signal.

[0083] The on time of the second port 212 of the first transistor 210 and the third port 213 of the first transistor 210 matches the first time, and the off time of the second port 222 of the second transistor 220 and the third port 223 of the second transistor 220 matches the second time.

[0084] For some embodiments, the first transistor 210 can be an N-channel transistor, so that when the first voltage is greater than or equal to the first conduction threshold, the third port of the N-channel transistor and the second port of the N-channel transistor are turned on, and when the first voltage is less than the first conduction threshold, the third port of the first transistor and the second port of the first transistor are cut off.

[0085] For example, the N-channel transistor can be an N-channel MOS transistor, so that the first port 211 of the first transistor 210 is the gate of the N-channel MOS transistor, the second port 212 of the first transistor 210 is the source of the N-channel MOS transistor, and the third port 213 of the first transistor 210 is the drain of the N-channel MOS transistor.

[0086] For another example, the N-channel transistor can also be an N-channel triode, the first port 211 of the first transistor 210 is the base of the N-channel triode, the second port 212 of the first transistor 210 is the emitter of the N-channel triode, and the third port 213 of the first transistor 210 is the collector of the N-channel triode.

[0087] Among them, the on-off condition of the first transistor being an N-channel MOS tube or an N-channel triode has been described in detail in the above embodiments, and will not be repeated here.

[0088] In addition, the second transistor 220 can be a P-channel transistor; thus, when the second voltage is greater than or equal to the first value, the third port of the P-channel transistor and the second port of the P-channel transistor are cut off, and when the second voltage is less than the first value, the third port of the second transistor and the second port of the second transistor are turned on, and the first value is the difference between the power supply voltage and the second turn-on threshold of the second transistor.

[0089] For example, the P-channel transistor is a P-channel MOS tube, the first port of the second transistor is the gate of the P-channel MOS tube, the second port of the second transistor is the source of the P-channel MOS tube, and the third port of the second transistor is the drain of the P-channel MOS tube. Thus, when the first voltage is greater than or equal to the first conduction threshold, the source of the N-channel MOS tube and the drain of the N-channel MOS tube are turned on, and when the first voltage is less than the first conduction threshold, the source of the N-channel MOS tube and the drain of the N-channel MOS tube are turned off. Thus, when the second voltage is greater than or equal to the first value, the source of the P-channel MOS tube and the drain of the P-channel MOS tube are turned off, and when the second voltage is less than the first value, the source of the P-channel MOS tube and the drain of the P-channel MOS tube are turned on.

[0090] For another example, the P-channel transistor is a P-channel triode, the first port of the second transistor is the base of the P-channel triode, the second port of the second transistor is the emitter of the P-channel triode, and the third port of the second transistor is the collector of the P-channel triode. For details, please refer to the description of the subsequent embodiments. Thus, when the second voltage is greater than or equal to the first value, the emitter of the P-channel triode and the collector of the P-channel triode are cut off, and when the second voltage is less than the first value, the emitter of the P-channel triode and the collector of the P-channel triode are turned on.

[0091] Optionally, the power supply end 132 of the module to be started 130 may also be connected to the first port 241 of the power supply 240 .

[0092] See also Figure 5 , Figure 5 A structural schematic diagram of a self-starting control device provided in an embodiment of the application is shown, in which a trigger module in the self-starting control device 100 includes an N-channel MOS tube 510 and a P-channel MOS tube 520, a first control module 410 also includes a first resistor R1 and a first capacitor C1, and a second control module 420 also includes a second resistor R2 and a second capacitor C2.

[0093] The first end 311 of the first resistor R1 and the second end 322 of the first capacitor C1 are respectively connected to the output end 412 of the first control module 410, and the second end 312 of the first resistor R1 is grounded. The first end 321 of the first capacitor C1 is connected to the first port 411 of the first control module 410. The first end 591 of the second resistor R2 and the second end 582 of the second capacitor C2 are respectively connected to the output end 422 of the second control module 420, and the second end 592 of the second resistor R2 is grounded. The first end 581 of the second capacitor C2 is connected to the power supply end 421 of the second control module 420.

[0094] Further, in Figure 5 In the embodiment, the gate electrode 511 of the N-channel MOS transistor 510 is connected to the first potential point 191, the source electrode 512 of the N-channel MOS transistor 510 is grounded, and the drain electrode 513 of the N-channel MOS transistor 510 is connected to the first port 131 of the module to be started 130. The gate electrode 521 of the P-channel MOS transistor 520 is connected to the second potential point 192, and the source electrode 522 of the P-channel MOS transistor 520 is externally connected to the power supply 240, and specifically can be connected to the first port 241 of the power supply 240. The drain electrode 523 of the P-channel MOS transistor 520 is connected to the first port 411 of the first control module 410, that is, the drain electrode 523 of the P-channel MOS transistor 520 is connected to the first end 321 of the first capacitor C1.

[0095] Thus, in Figure 5 In the self-starting control device 100 shown, please refer to Figure 6 , Figure 6 A voltage variation relationship diagram in an embodiment of the present application is shown.

[0096] If it is assumed that the moment when the second end 522 of the second capacitor C2 obtains the power supply voltage is t0, then at the moment t0, the voltages of the first end 521 of the second capacitor C2 and the second end 522 of the second capacitor C2 are both the power supply voltage, and at this time, the voltage difference Vgs2 between the gate 521 of the P-channel MOS transistor and the source 522 of the P-channel MOS transistor 520 is 0V, and at this time, the source 522 of the P-channel MOS transistor 520 and the drain 523 of the P-channel MOS transistor 520 are cut off. Therefore, the voltages of the first end 321 of the first capacitor C1 and the second end 322 of the first capacitor C1 are both 0V, and at this time, the source 512 of the N-channel MOS transistor 510 and the drain 513 of the N-channel MOS transistor 510 are cut off. Therefore, at this time, the first port 131 of the module to be started 130 can be pulled up by the module to be started 130 to a second level signal, and the second level signal can be a high level signal.

[0097] Furthermore, from time t0 to time t1, the second capacitor C2 can be discharged through the second resistor R2, so that the second voltage at the second potential point decreases, wherein time t1 is the moment when the second voltage at the second potential point 192 is the first value, that is, the time period t1-t0 is the second duration.

[0098] For some implementations, the second duration may be described by the following formula (1):

[0099]

[0100] Where VCC is the power supply voltage, VGS 2(th) is the second conduction threshold of the P-channel MOS transistor 520 .

[0101] Thus, at time t1, the source 522 of the P-channel MOS transistor 520 and the drain 523 of the P-channel MOS transistor 520 are turned on, so that the first capacitor C1 is charged almost instantaneously, so that the voltages of the first end 321 of the first capacitor C1 and the second end 322 of the first capacitor C1 are both the power supply voltage, and at this time, the source 512 of the N-channel MOS transistor 510 and the drain 513 of the N-channel MOS transistor 510 are turned on, so that the first port 131 of the module to be started 130 is changed into a first level signal lasting for a first time length, and the first level signal is a low level signal. Therefore, for some embodiments, time t1 can also be approximately regarded as the moment when the source 512 of the N-channel MOS transistor 510 and the drain 513 of the N-channel MOS transistor 510 are turned on.

[0102] Figure 6The horizontal coordinate of the coordinate system is time T, the unit can be milliseconds ms, and the vertical coordinate is voltage U, the unit can be V. Specifically, the curve N1 in FIG6 represents the voltage output by the power supply, the curve N2 represents the second voltage, the curve N3 represents the first voltage, and the curve N4 represents the voltage of the first port 131 of the module to be started 130. Figure 6 In the example, from time t0 to time t1, the voltage output by the power supply is maintained at the power supply voltage; the second voltage decreases from the power supply voltage to the first value, which is the difference between the power supply voltage and the second conduction threshold; the first voltage slowly increases from 0V; and the first port 131 of the module to be started 130 maintains the second level signal. It should be noted that the change from cut-off to conduction between the drain and source of the MOS is a process in which the internal resistance of the MOS tube gradually decreases. Specifically, as the second voltage decreases, the voltage difference between the source 522 of the P-channel MOS tube 520 and the gate 521 of the P-channel MOS tube 520 gradually increases, thereby causing the internal resistance between the source 522 of the P-channel MOS tube 520 and the drain 523 of the P-channel MOS tube 520 to gradually decrease. Therefore, even though the source 522 of the P-channel MOS transistor 520 and the drain 523 of the P-channel MOS transistor 520 are still in the cut-off state during the period from t0 to t1, as the internal resistance between the source 522 of the P-channel MOS transistor 520 and the drain 523 of the P-channel MOS transistor 520 gradually decreases, the voltage at the first potential point 191 gradually increases.

[0103] From time t1 to time t2, the first capacitor C1 discharges through the first resistor R1, so that the first voltage of the first potential point 191 decreases, until the first voltage is less than the first conduction threshold at time t2, and the source 512 of the N-channel MOS tube 510 and the drain 513 of the N-channel MOS tube 510 are cut off, so that at this time, the first port 131 of the module to be started 130 is again pulled up by the module to be started 130 to a second level signal, and the second level signal can be a high level signal.

[0104] Among them, time t2 is the time when the first voltage is less than the first conduction threshold, that is, time t1 to time t2 is the first time length.

[0105] For some implementations, the first duration may be described by the following formula (2):

[0106]

[0107] Among them, VGS 1(th) is the first conduction threshold of the N-channel MOS transistor 510 .

[0108] Please continue reading Figure 6, from time t1 to time t2, the voltage output by the power supply remains at the power supply voltage; the second voltage continues to decrease; the first voltage changes rapidly from 0V to the power supply voltage, and then decreases to the first conduction threshold; the first port 131 of the module to be started 130 changes to the first level signal at the moment when the first voltage changes to the power supply voltage after time t1, until time t2.

[0109] Please continue reading Figure 6 After time t2, the voltage output by the power supply remains at the power supply voltage; the second voltage continues to drop from the power supply voltage; the first voltage continues to drop; the first port 131 of the module to be started 130 jumps from the first level signal to the second level signal.

[0110] Optionally, the power supply end 132 of the module to be started 130 may also be connected to the first port 241 of the power supply 240 .

[0111] See also Figure 7 , Figure 7 A structural schematic diagram of a self-starting control device provided in an embodiment of the application is shown, in which a trigger module 100 includes an N-channel transistor 710 and a P-channel transistor 720, a first control module 410 also includes a first resistor R1 and a first capacitor C1, and a second control module 420 also includes a second resistor R2 and a second capacitor C2.

[0112] The connection relationship among the first resistor R1, the first capacitor C1, the second resistor R2 and the second capacitor C2 can be referred to in Figure 5 The introduction in will not be repeated here.

[0113] Further, in Figure 7 In the embodiment, the base 711 of the N-channel transistor 710 is connected to the first potential point 191, the emitter 712 of the N-channel transistor 710 is grounded, and the collector 713 of the N-channel transistor 710 is connected to the first port 131 of the module to be started 130. The base 721 of the P-channel transistor 720 is connected to the second potential point 192, and the emitter 722 of the P-channel transistor 720 is externally connected to the power supply 240, specifically, it can be connected to the first port 241 of the power supply 240. The collector 723 of the P-channel transistor 720 is connected to the first port 411 of the first control module 410, that is, the collector 723 of the P-channel transistor 720 is connected to the first end 321 of the first capacitor C1.

[0114] Similar to the above-mentioned embodiments, the first capacitor C1 and the first resistor R1 in the first control module 410 can control the first drop rate of the first voltage at the first potential point, and the second capacitor C2 and the second resistor R2 in the second control module 420 can control the second drop rate of the second voltage at the second potential point, so that from time t0 to time t1, the first port 131 of the module to be started 130 is kept at the second level signal; from time t1 to time t2, the first port 131 of the module to be started 130 is changed to the first level signal at the moment when the first voltage changes to the power supply voltage after time t1, until time t2; after time t2, the first port 131 of the module to be started 130 is jumped from the first level signal to the second level signal. Among them, the conduction or cutoff of the N-channel transistor 710 is similar to the conduction or cutoff of the N-channel MOS transistor 510 described in the above-mentioned embodiments, and the conduction or cutoff of the P-channel transistor 720 is similar to the conduction or cutoff of the P-channel MOS transistor 520 described in the above-mentioned embodiments, which will not be repeated here.

[0115] Optional, Figure 7 The self-start control device 100 shown in FIG. 1 further includes a third resistor R3 , a first end 791 of the third resistor R3 is connected to the first potential point 191 , and a second end 792 of the third resistor R3 is connected to the base 711 of the N-channel transistor 710 .

[0116] Optionally, the power supply end 132 of the module to be started 130 may also be connected to the first port 241 of the power supply 240 .

[0117] See also Figure 8 , Figure 8 A structural schematic diagram of a self-starting control device provided in an embodiment of the present application is shown, in which the trigger module of the self-starting control device 100 includes a comparator 810, the first control module includes a third control module 830 and a fourth control module 840, and the first potential point includes a third potential point 193 and a fourth potential point 194.

[0118] The comparator 810 may include an inverting input terminal 811, a non-inverting input terminal 812, and an output port 813. The inverting input terminal 811 of the comparator 810 is connected to the third potential point 193, and the non-inverting input terminal 812 of the comparator 810 is connected to the fourth potential point 194. Therefore, the third voltage 193 of the third potential point can be used as the input voltage of the inverting input terminal 811 of the comparator 810, and the fourth voltage of the fourth potential point 194 can be used as the input voltage of the non-inverting input terminal 812 of the comparator 810.

[0119] In addition, the comparator 810 may further include a power supply terminal 814 and a ground terminal 815 . The power supply terminal 814 of the comparator 810 is used for connecting to the external power supply 240 , and the ground terminal 815 of the comparator 810 is used for grounding.

[0120] Further, the third control module 830 may include a power supply terminal 831 and an output terminal 832. The power supply terminal 831 of the third control module 830 is used for the external power supply 240, and specifically can be connected to the first port 241 of the power supply 240. The output terminal 832 of the third control module 830 is connected to the third potential point 193. The third control module 830 is used to input a third voltage to the third potential point 193 through the output terminal 832 of the third control module 830 based on a third change rate. The fourth control module 840 includes a power supply terminal 841 and an output terminal 842. The power supply terminal 841 of the fourth control module 840 is used for the external power supply 240, and specifically can be connected to the first port 241 of the power supply 240. The output terminal 842 of the fourth control module 840 is connected to the fourth potential point 194. The fourth control module 840 is used to input a fourth voltage to the fourth potential point 194 through the output terminal 842 of the fourth control module 840 based on a fourth change rate. The third change rate is the discharge rate of the third control module 830 , the fourth change rate is the discharge rate of the fourth control module 840 , and the third change rate is less than the fourth change rate.

[0121] The output port 813 of the comparator 810 is used to send a first level signal for a first duration to the startup module 130 when the third voltage is less than the fourth voltage, and the first duration is the duration when the third voltage is less than the fourth voltage. The first duration can be controlled by the discharge rate of the third control module 830 and the discharge rate of the fourth control module 840, and the specific description can be referred to the subsequent embodiments.

[0122] Optionally, the power supply end 132 of the module to be started 130 may also be connected to the first port 241 of the power supply 240 .

[0123] See also Fig. 9 , Fig. 9 A structural schematic diagram of a self-starting control device provided in an embodiment of the present application is shown, in which the trigger module of the self-starting control device 100 includes a comparator 810, the third control module also includes a fourth resistor R4 and a third capacitor C3, and the fourth control module also includes a fifth resistor R5 and a fourth capacitor C4.

[0124] The first end 911 of the fourth resistor R4 and the second end 922 of the third capacitor C3 are respectively connected to the output end 832 of the third control module 830, and the second end 912 of the fourth resistor R4 is grounded. The first end 921 of the third capacitor C3 is connected to the power supply end 831 of the third control module 830. The first end 931 of the fifth resistor R5 and the second end 942 of the fourth capacitor C4 are respectively connected to the output end 842 of the fourth control module 840, and the second end 932 of the fifth resistor R5 is grounded. The first end 942 of the fourth capacitor C4 is connected to the power supply end of the fourth control module.

[0125] Exemplarily, if at time t0 the first end 942 of the fourth capacitor C4 and the first end 921 of the third capacitor C3 obtain the power supply voltage sent by the power supply end, then at this time, the voltages of the first end 921 of the third capacitor C3 and the second end 922 of the third capacitor C3 are instantly charged to the power supply voltage, and the voltages of the first end 941 of the fourth capacitor C4 and the second end 942 of the fourth capacitor C4 are instantly charged to the power supply voltage. Since the third rate of change is less than the fourth rate of change, the voltage of the in-phase input end 812 of the comparator 810 will be less than the voltage of the inverting input end 811 of the comparator 810 after time t0, so that the output port 813 of the comparator 810 can send a first level signal of a first duration to the first port 131 of the module to be started 130, and the first duration is the duration when the third voltage is less than the fourth voltage.

[0126] Optional, see Fig.10 , Fig.10 A structural schematic diagram of a self-starting control device provided in an embodiment of the present application is shown, in which the trigger module of the self-starting control device 100 includes a comparator 810, the third control module also includes a fourth resistor R4, a third capacitor C3 and a first diode D1, and the fourth control module also includes a fifth resistor R5, a fourth capacitor C4 and a second diode D2.

[0127] The cathode 1012 of the first diode D1 is connected to the output terminal 832 of the third control module 830, and the anode 1011 of the first diode D1 is connected to the second terminal 922 of the third capacitor C3. The cathode 1022 of the second diode D2 is connected to the first terminal 931 of the fifth resistor R5, and the anode 1021 of the second diode D2 is connected to the output terminal 842 of the fourth control module 840.

[0128] Therefore, the output port 813 of the comparator 810 is used to send a second level signal for a third duration to the module to be started 130 when the third voltage is greater than or equal to the fourth voltage, and to send a first level signal for a first duration to the module to be started 130 when the third voltage is less than the fourth voltage, wherein the third duration is the duration during which the third voltage is greater than or equal to the fourth voltage, and the first duration is the duration during which the third voltage is less than the fourth voltage. Specifically, the second level signal or the first level signal may be sent to the first port 131 of the module to be started 130. The first level signal may be a low level signal, and the second level signal may be a high level signal.

[0129] Optionally, the power supply end 132 of the module to be started 130 may also be connected to the first port 241 of the power supply 240 .

[0130] exist Fig.10 In the self-starting control device 100 shown, please combine Fig.11 See also, Fig.11 A voltage variation relationship diagram in an embodiment of the present application is shown.

[0131] Exemplarily, if it is assumed that at time t0, the first end 942 of the fourth capacitor C4 and the first end 921 of the third capacitor C3 obtain the power supply voltage sent by the power supply end, then at this time, the voltages of the first end 921 of the third capacitor C3 and the second end 922 of the third capacitor C3 are instantly charged to the power supply voltage, and the voltages of the first end 941 of the fourth capacitor C4 and the second end 942 of the fourth capacitor C4 are instantly charged to the power supply voltage. At this time, due to the voltage drop of the first diode D1, the third voltage of the third potential point 193 is the difference between the power supply voltage and the voltage drop of the first diode D1, so that at time t0, the third voltage is less than the fourth voltage. Therefore, at time t0, the output port 813 of the comparator 810 outputs a second level signal, so that the first port 131 of the module to be started 130 is a second level signal.

[0132] From time t0 to time t1, the third voltage decreases at a third rate of change, and the fourth voltage decreases at a fourth rate of change, wherein the third rate of change is less than the fourth rate of change. Therefore, the fourth voltage decreases to be equal to the third voltage at time t1, and after time t1, the fourth voltage is less than the third voltage, and after time t1, the output port 813 of the comparator 810 can output a first level signal.

[0133] See also Fig.11 , Fig.11The horizontal coordinate of the coordinate system is time T, and the unit can be milliseconds ms, and the vertical coordinate is voltage U, and the unit can be V. Specifically, curve N5 is used to represent the third voltage, and curve N6 is used to represent the fourth voltage. It can be seen that from time t0 to time t1, the third voltage is less than the fourth voltage, and the first port 131 of the module to be started 130 is a second level signal; from time t1 to time t2, the third voltage is greater than the fourth voltage, and the first port 131 of the module to be started 130 is a first level signal.

[0134] Among them, due to the voltage drop of the second diode D2, the fourth voltage at the fourth potential point will not be lower than the voltage drop of the second diode D2, so that the third voltage is equal to the fourth voltage at time t2, and after time t2, the third voltage is less than the fourth voltage.

[0135] For further information, see Fig.11 , Fig.11 After time t2, the third voltage is less than the fourth voltage, and the first port 131 of the module to be started 130 is a second level signal.

[0136] Therefore, after time t2 , the output port 813 of the comparator 810 can output a second level signal to the module to be started 130 .

[0137] Optionally, the power supply end 132 of the module to be started 130 may also be connected to the first port 241 of the power supply 240 .

[0138] Optional, see Fig.12 , Fig.12 A structural schematic diagram of a self-starting control device provided in an embodiment of the present application is shown, in which the trigger module of the self-starting control device 100 includes a comparator 810, the third control module also includes a sixth resistor R6 and a fifth capacitor C5, and the fourth control module also includes a seventh resistor R7 and a sixth capacitor C6.

[0139] The second end 1212 of the sixth resistor R6 and the first end 1221 of the fifth capacitor C5 are respectively connected to the output end 832 of the third control module 830, and the first end 1211 of the sixth resistor R6 is connected to the power supply end 831 of the third control module 830; the second end 1222 of the fifth capacitor C5 is grounded. The second end 1232 of the seventh resistor R7 and the first end 1241 of the sixth capacitor C6 are respectively connected to the output end 842 of the fourth control module 840, and the first end 1231 of the seventh resistor R7 is connected to the power supply end 841 of the fourth control module 840; the second end 1242 of the sixth capacitor C6 is grounded.

[0140] Among them, the output port 813 of the comparator 810 can send a first level signal lasting for a first time period to the first port 131 of the module to be started 130. The first time period is the time period when the third voltage is less than the fourth voltage. It is similar to the above-mentioned embodiment and will not be repeated here.

[0141] Optionally, the power supply end 132 of the module to be started 130 may also be connected to the first port 241 of the power supply 240 .

[0142] Optional, see Fig.13 , Fig.13 A structural schematic diagram of a self-starting control device provided in an embodiment of the present application is shown, in which the trigger module of the self-starting control device 100 includes a comparator 810, the third control module also includes a sixth resistor R6, a fifth capacitor C5 and a third diode D3, and the fourth control module also includes a seventh resistor R7, a sixth capacitor C6 and a fourth diode D4.

[0143] The cathode 1312 of the third diode D3 is connected to the output terminal 832 of the third control module 830, and the anode 1311 of the third diode D3 is connected to the second end 1212 of the sixth resistor R6. The cathode 1322 of the fourth diode D4 is connected to the first end 1241 of the sixth capacitor C6, and the anode 1321 of the fourth diode D4 is connected to the output terminal 842 of the fourth control module 840.

[0144] The output port 813 of the comparator 810 is used to send a second level signal lasting a third time length to the module to be started when the third voltage is greater than or equal to the fourth voltage, and to send a first level signal lasting a first time length to the module to be started when the third voltage is less than the fourth voltage.

[0145] The specific process and method of adjusting the level signal outputted from the output port 813 of the comparator 810 by controlling the third level through the third control module 830 and controlling the fourth level through the fourth control module 840 are as follows: Fig.10 The embodiment shown in FIG. 1 is similar to that shown in FIG. 1 and will not be described in detail here.

[0146] Optionally, the power supply end 132 of the module to be started 130 may also be connected to the first port 241 of the power supply 240 .

[0147] The self-starting control device provided in the present application controls the rate of change of the first voltage of the first potential point to the ground through the first control module, thereby adjusting the first duration of the first level, and then changes the first port of the module to be started to the first level signal lasting for the first duration through the second port of the trigger module, thereby starting the module to be started, avoiding occupying the input and output ports of the microcontroller unit and the like to control the startup of the module to be started.

[0148] Optional, see Fig.14 , Fig.14 A self-starting system provided by the present application is shown, and the self-starting system 1400 includes a module to be started 130, a power supply module 1410, and the self-starting device 100 in the aforementioned embodiment. The self-starting control device 100 is connected to the module to be started 130 and the power supply module 1410, respectively, and is used to generate a first level signal for triggering the start of the module to be started if a power signal sent by the power supply module is detected.

[0149] Optionally, the startup module 130 and the power supply module 1410 are also connected.

[0150] The power signal sent by the power supply module 1410 may have a power voltage, and the power voltage may be a value adjusted by the battery through boosting or stepping down, for example, 3.3V or 3.8V.

[0151] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. At the same time, other implementation methods can be derived from the above embodiments, so that structural and logical replacements and changes can be made without departing from the scope of this disclosure.

[0152] The above embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A self-starting control device, characterized in that: The self-starting control device comprises a first control module and a trigger module, wherein the first ports of the first control module and the trigger module are respectively connected to a first potential point; The first control module is used to control the rate of change of the first voltage of the first potential point to the ground; The trigger module is used to change the first port of the module to be started into a first level signal lasting for a first time period through the second port of the trigger module based on the first voltage of the first potential point, the first time period is greater than a first threshold, the first level signal lasting for the first time period is used to start the module to be started, and the first time period is negatively correlated with the change rate of the first voltage.

2. The device according to claim 1, characterized in that The first level signal is a low level signal, and the trigger module includes a first transistor; The first port of the first transistor is connected to the first potential point, the second port of the first transistor is grounded, and the third port of the first transistor is connected to the first port of the module to be started; The first control module includes a power supply end and an output end, the power supply end of the first control module is used for connecting to an external power supply, the output end is connected to the first potential point, the first control module is used for inputting a first voltage to the first potential point through the output end of the first control module based on a change rate of the first voltage, and the change rate of the first voltage is a discharge rate of the first control module; The first transistor turns on or off the second port of the first transistor and the third port of the first transistor based on the first voltage; When the third port of the first transistor and the second port of the first transistor are in the on state, the first port of the module to be started is turned on to ground, and the on time of the second port of the first transistor and the third port of the first transistor matches the first time.

3. The device according to claim 2, characterized in that The first transistor is an N-channel transistor; When the first voltage is greater than or equal to a first conduction threshold, the third port of the N-channel transistor and the second port of the N-channel transistor are turned on; when the first voltage is less than the first conduction threshold, the third port of the first transistor and the second port of the first transistor are turned off.

4. The device according to claim 2, characterized in that The self-starting control device further comprises a delay module, wherein the delay module comprises a second transistor and a second control module; The first port of the second transistor is connected to the second potential point, and the second port of the second transistor is connected to the power supply; The first control module comprises a first port and an output end, the first port of the first control module is connected to the third port of the second transistor, the output end of the first control module is connected to the first potential point, the first control module is used to input a first voltage to the first potential point through the output end of the first control module based on a change rate of the first voltage, and the change rate of the first voltage is a discharge rate of the first control module; The second control module includes a power supply end and an output end, the power supply end of the second control module is used for connecting to an external power supply, the output end of the second control module is connected to the second potential point, and the second control module is used for inputting a second voltage to the second potential point through the output end of the second control module based on a second change rate, and the second change rate is a discharge rate of the second control module; The second transistor turns on or off the second port of the second transistor and the third port of the second transistor based on the second voltage; When the third port of the second transistor and the second port of the second transistor are in the off state, the first port of the module to be started is cut off to the ground; when the third port of the first transistor and the second port of the first transistor are in the on state, the first port of the module to be started is turned on to the ground, the on time of the second port of the first transistor and the third port of the first transistor matches the first time, and the off time of the second port of the second transistor and the third port of the second transistor matches the second time.

5. The device according to claim 4, characterized in that The first control module further includes a first resistor and a first capacitor, and the second control module further includes a second resistor and a second capacitor; The first end of the first resistor and the second end of the first capacitor are respectively connected to the output end of the first control module, and the second end of the first resistor is grounded; The first end of the first capacitor is connected to the first port of the first control module; The first end of the second resistor and the second end of the second capacitor are respectively connected to the output end of the second control module, and the second end of the second resistor is grounded; The first end of the second capacitor is connected to the power supply end of the second control module.

6. The device according to claim 5, characterized in that The first transistor is an N-channel transistor; when the first voltage is greater than or equal to a first conduction threshold, the third port of the N-channel transistor and the second port of the N-channel transistor are turned on, and when the first voltage is less than the first conduction threshold, the third port of the first transistor and the second port of the first transistor are turned off; The second transistor is a P-channel transistor; when the second voltage is greater than or equal to a first value, the third port of the P-channel transistor and the second port of the P-channel transistor are cut off, and when the second voltage is less than the first value, the third port of the second transistor and the second port of the second transistor are turned on, and the first value is the difference between the power supply voltage and the second turn-on threshold of the second transistor.

7. The device according to claim 1, characterized in that The trigger module includes a comparator, the first control module includes a third control module and a fourth control module, and the first potential point includes a third potential point and a fourth potential point; The inverting input terminal of the comparator is connected to the third potential point, and the non-inverting input terminal of the comparator is connected to the fourth potential point; The third control module includes a power supply end and an output end, the power supply end of the third control module is used for an external power supply, the output end of the third control module is connected to the third potential point, the third control module is used to input a third voltage to the third potential point through the output end of the third control module based on a third change rate, the fourth control module includes a power supply end and an output end, the power supply end of the fourth control module is used for an external power supply, the output end of the fourth control module is connected to the fourth potential point, the fourth control module is used to input a fourth voltage to the fourth potential point through the output end of the fourth control module based on a fourth change rate, the third change rate is the discharge rate of the third control module, the fourth change rate is the discharge rate of the fourth control module, and the third change rate is less than the fourth change rate; The output port of the comparator is used to send a first level signal lasting for a first time period to the module to be started when the third voltage is lower than the fourth voltage, and the first time period is the time period during which the third voltage is lower than the fourth voltage.

8. The device according to claim 7, characterized in that The third control module further includes a fourth resistor and a third capacitor, and the fourth control module further includes a fifth resistor and a fourth capacitor; The first end of the fourth resistor and the second end of the third capacitor are respectively connected to the output end of the third control module, and the second end of the fourth resistor is grounded; A first end of the third capacitor is connected to a power supply end of the third control module; The first end of the fifth resistor and the second end of the fourth capacitor are respectively connected to the output end of the fourth control module, and the second end of the fifth resistor is grounded; The first end of the fourth capacitor is connected to the power supply end of the fourth control module.

9. The device according to claim 8, characterized in that The third control module further includes a first diode, and the fourth control module further includes a second diode; The cathode of the first diode is connected to the output end of the third control module, and the anode of the first diode is connected to the second end of the third capacitor; The cathode of the second diode is connected to the first end of the fifth resistor, and the anode of the second diode is connected to the output end of the fourth control module; The output port of the comparator is used to send a second level signal lasting a third time length to the module to be started when the third voltage is greater than or equal to the fourth voltage, and to send a first level signal lasting a first time length to the module to be started when the third voltage is less than the fourth voltage. The third time length is the time length during which the third voltage is greater than or equal to the fourth voltage, and the first time length is the time length during which the third voltage is less than the fourth voltage.

10. A self-starting system, characterized in that: The self-starting system comprises a module to be started, a power supply module and a self-starting control device according to any one of claims 1 to 9; The self-start control device is connected to the module to be started and the power supply module respectively, and is used to generate a first level signal for triggering the start of the module to be started if a power signal sent by the power supply module is detected.

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