A voltage stabilizing power supply circuit for an electronic control system

Abstract

The application discloses a kind of voltage stabilizing power supply circuit of electric control system, it is related to electric control system field, the voltage stabilizing power supply circuit of this electric control system includes: power supply module, for supply direct current, output to switch module, timing alarm module, single-key control module;Switch module is used to build the loop between power supply module and voltage output module;Voltage output module is used to output direct current voltage;Compared with prior art, the beneficial effects of the application are: after the maximum voltage output module outputs, the high-power detection module drives timing alarm module to work, when the maximum voltage output module outputs reaches the set time, timing alarm module alarms and prompts the user, if the user needs to continue to use maximum voltage power supply, stop working through single-key control module control timing alarm module, avoid alarm interference, after circuit restart, single-key control module restores initial state, and repeated control is not needed.

Description

Technical Field

[0001] This invention relates to the field of electronic control systems, specifically a voltage stabilizing power supply circuit for electronic control systems. Background Technology

[0002] An electrical control system includes power supply circuits, protection circuits, control circuits, switching circuits, and other circuits. These circuits work together to control one or more objects, thereby ensuring the safe and reliable operation of the controlled equipment.

[0003] The output voltage of a power supply circuit can generally be adjusted within a certain range to match devices with different power supply requirements. However, prolonged operation at the maximum output voltage can cause significant wear and tear on the components of the power supply circuit, a situation that users are often unaware of, necessitating improvements. Summary of the Invention

[0004] The purpose of this invention is to provide a regulated power supply circuit for an electronic control system to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A voltage regulator circuit for an electronic control system includes: The power supply module supplies DC power to the switch module, timer alarm module, and single-button control module. The switching module is used to create a loop between the power supply module and the voltage output module. Voltage output module, used to output DC voltage; The feedback voltage regulator module is used to provide output voltage information to the voltage output module, so that the voltage output module outputs a stable voltage. The high-power detection module is used to detect whether the output voltage of the voltage output module exceeds the threshold voltage. If it does, it drives the timing alarm module to work. The timing alarm module is used to keep track of time after the start of operation, and to trigger an alarm when the time reaches the set value. A single-button control module is used to control whether the timing alarm module works or not via a button, and it automatically restores to the initial state after each restart; The output of the power supply module is connected to the input of the switch module, the first input of the timing alarm module, and the input of the single-button control module. The output of the switch module is connected to the first input of the voltage output module. The output of the voltage output module is connected to the input of the feedback voltage regulator module and the input of the high-power detection module. The output of the feedback voltage regulator module is connected to the second input of the voltage output module. The output of the high-power detection module is connected to the second input of the timing alarm module. The output of the single-button control module is connected to the third input of the timing alarm module.

[0006] As a further embodiment of the present invention: the switching module includes a first switch, a first resistor, and a first capacitor. One end of the first switch is connected to the output terminal of the power supply module, the other end of the first switch is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the first capacitor and the first input terminal of the voltage output module, and the other end of the first capacitor is grounded.

[0007] As a further embodiment of the present invention: the voltage output module includes a second resistor, a first transistor, a third resistor, and a second capacitor. One end of the second resistor is connected to the collector of the first transistor and the output terminal of the switching module. The other end of the second resistor is connected to the base of the first transistor. The emitter of the first transistor is connected to one end of the third resistor, one end of the second capacitor, the input terminal of the feedback voltage regulator module, and the input terminal of the high-power detection module. The other end of the third resistor is grounded, and the other end of the second capacitor is grounded.

[0008] As a further embodiment of the present invention: the feedback voltage regulator module includes a fourth resistor, a fifth resistor, a first diode, a second transistor, a first potentiometer, and a third capacitor. One end of the fifth resistor is connected to the output terminal of the voltage output module and one end of the fourth resistor. The other end of the fifth resistor is connected to one end of the first potentiometer, one end of the third capacitor, and the base of the second transistor. The other end of the third capacitor is grounded. The other end of the first potentiometer is grounded. The emitter of the second transistor is connected to the other end of the fourth resistor and the cathode of the first diode. The anode of the first diode is grounded. The collector of the second transistor is connected to the base of the first transistor.

[0009] As a further embodiment of the present invention: the high-power detection module includes a second diode, a third transistor, a fourth transistor, and a sixth resistor. The emitter of the third transistor is connected to the negative terminal of the second diode and the output terminal of the voltage output module. The positive terminal of the second diode is connected to one end of the sixth resistor, the base of the fourth transistor, and the collector of the third transistor. The base of the third transistor is connected to the collector of the fourth transistor. The other end of the sixth resistor is connected to the emitter of the fourth transistor and the second input terminal of the timing alarm module.

[0010] As a further embodiment of the present invention: the timing alarm module includes a seventh resistor, a fifth MOSFET, a fourth capacitor, a third diode, an eighth resistor, a sixth MOSFET, a fourth diode, and a speaker. One end of the seventh resistor is connected to the output terminal of the high-power detection module, and the other end of the seventh resistor is connected to one end of the fourth capacitor, the drain (D) of the fifth MOSFET, and the cathode of the third diode. The other end of the fourth capacitor is grounded, the source (S) of the fifth MOSFET is grounded, and the gate (G) of the fifth MOSFET is connected to the output terminal of the single-button control module. The anode of the third diode is connected to one end of the eighth resistor and the gate (G) of the sixth MOSFET. The other end of the eighth resistor is grounded, the drain (D) of the sixth MOSFET is connected to the cathode of the fourth diode, the anode of the fourth diode is connected to the output terminal of the power supply module, and the source (S) of the sixth MOSFET is connected to one end of the speaker. The other end of the speaker is grounded.

[0011] As a further embodiment of the present invention: the single-button control module includes a second switch, a ninth resistor, a tenth resistor, an eleventh resistor, a seventh transistor, and an eighth transistor. One end of the second switch is connected to the output terminal of the power supply module, and the other end of the second switch is connected to one end of the ninth resistor. The other end of the ninth resistor is connected to the base of the seventh transistor and one end of the eleventh resistor. The emitter of the seventh transistor is grounded. The collector of the seventh transistor is connected to one end of the tenth resistor and the base of the eighth transistor. The other end of the tenth resistor is connected to the emitter of the eighth transistor and the output terminal of the power supply module. The collector of the eighth transistor is connected to the other end of the eleventh resistor and the third input terminal of the timing alarm module.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: After the voltage output module outputs the maximum voltage, the high-power detection module drives the timing alarm module to work. When the voltage output module outputs the maximum voltage for a set time, the timing alarm module alarms to remind the user. If the user needs to continue to use the maximum voltage power supply, he can control the timing alarm module to stop working through the single button control module to avoid alarm interference. After the circuit restarts, the single button control module returns to the initial state, and there is no need for repeated control. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a voltage regulator circuit for an electronic control system.

[0014] Figure 2 This is a circuit diagram of the first part of a voltage-stabilized power supply circuit for an electronic control system.

[0015] Figure 3 This is a circuit diagram of the second part of a voltage-stabilized power supply circuit for an electronic control system.

[0016] Figure 4 This is a circuit diagram of the third part of a voltage-stabilized power supply circuit for an electronic control system. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] Please see Figure 1 A voltage regulator circuit for an electronic control system, comprising: Power supply module 1 is used to supply DC power and output it to switch module 2, timing alarm module 6, and single button control module 7; Switch module 2 is used to form a circuit between power supply module 1 and voltage output module 3; Voltage output module 3 is used to output DC voltage; Feedback voltage regulator module 4 is used to provide feedback output voltage information to voltage output module 3, so that voltage output module 3 outputs a stable voltage; The high-power detection module 5 is used to detect whether the output voltage of the voltage output module 3 exceeds the threshold voltage. If it does, it drives the timing alarm module 6 to work. The timing alarm module 6 is used to keep track of time after the start of work, and to trigger an alarm when the time reaches the set value. The single-button control module 7 is used to control whether the timing alarm module 6 works via a button, and automatically restores the initial state after each restart; The output terminal of power supply module 1 is connected to the input terminal of switch module 2, the first input terminal of timing alarm module 6, and the input terminal of single-button control module 7. The output terminal of switch module 2 is connected to the first input terminal of voltage output module 3. The output terminal of voltage output module 3 is connected to the input terminal of feedback voltage regulator module 4 and the input terminal of high-power detection module 5. The output terminal of feedback voltage regulator module 4 is connected to the second input terminal of voltage output module 3. The output terminal of high-power detection module 5 is connected to the second input terminal of timing alarm module 6. The output terminal of single-button control module 7 is connected to the third input terminal of timing alarm module 6.

[0019] In a specific embodiment: Please refer to Figure 2 Power supply module 1 outputs DC voltage VIN to power other modules. DC voltage VIN can be obtained by converting AC power to step-down, or it can be obtained directly through a DC power supply.

[0020] In this embodiment: Please refer to Figure 2The switch module 2 includes a first switch S1, a first resistor R1, and a first capacitor C1. One end of the first switch S1 is connected to the output terminal of the power supply module 1, and the other end of the first switch S1 is connected to one end of the first resistor R1. The other end of the first resistor R1 is connected to one end of the first capacitor C1 and the first input terminal of the voltage output module 3. The other end of the first capacitor C1 is grounded.

[0021] The first switch S1 acts as a power supply switch. When pressed, the power supply module 1 supplies power to the voltage output module 3 through the switch module 2.

[0022] In another embodiment, the first resistor R1 can be omitted. The first resistor R1 is used to limit the current and prevent the circuit current from being too large.

[0023] In this embodiment: Please refer to Figure 2 The voltage output module 3 includes a second resistor R2, a first transistor V1, a third resistor R3, and a second capacitor C2. One end of the second resistor R2 is connected to the collector of the first transistor V1 and the output terminal of the switching module 2. The other end of the second resistor R2 is connected to the base of the first transistor V1. The emitter of the first transistor V1 is connected to one end of the third resistor R3, one end of the second capacitor C2, the input terminal of the feedback voltage regulator module 4, and the input terminal of the high-power detection module 5. The other end of the third resistor R3 is grounded, and the other end of the second capacitor C2 is grounded.

[0024] When a voltage is input, the voltage provides a high level to the base of the first transistor V1 (NPN) through the second resistor R2, and the first transistor V1 turns on to output voltage.

[0025] In another embodiment, the second capacitor C2 can be omitted. The second capacitor C2 is used to stabilize the voltage and reduce voltage fluctuations when the output voltage of the first transistor V1 changes.

[0026] In this embodiment: Please refer to Figure 2 The feedback voltage regulator module 4 includes a fourth resistor R4, a fifth resistor R5, a first diode D1, a second transistor V2, a first potentiometer RP1, and a third capacitor C3. One end of the fifth resistor R5 is connected to the output terminal of the voltage output module 3 and one end of the fourth resistor R4. The other end of the fifth resistor R5 is connected to one end of the first potentiometer RP1, one end of the third capacitor C3, and the base of the second transistor V2. The other end of the third capacitor C3 is grounded. The other end of the first potentiometer RP1 is grounded. The emitter of the second transistor V2 is connected to the other end of the fourth resistor R4 and the cathode of the first diode D1. The anode of the first diode D1 is grounded. The collector of the second transistor V2 is connected to the base of the first transistor V1.

[0027] The sum of the voltages across the fifth resistor R5 and the first potentiometer RP1 is the output voltage of the first transistor V1. The voltage across the first potentiometer RP1 is the sampling voltage, which is output to the second transistor V2 (NPN). The emitter voltage of the second transistor V2 is fixed based on the first diode D1 (Zenigma sensor). Therefore, when the output voltage of the first transistor V1 changes, the voltage across the first potentiometer RP1 changes, the base voltage of the second transistor V2 changes, the collector voltage of the second transistor V2 changes, and the collector current of the second transistor V2 changes. This causes the base current of the first transistor V1 to change in the opposite direction, the base voltage of the first transistor V1 to change in the opposite direction, and the output voltage of the first transistor V1 to change in the opposite direction, thus constructing a regulated output.

[0028] In another embodiment, the first potentiometer RP1 can be replaced with a regular resistor, which would prevent the output voltage of the first transistor V1 from being adjusted.

[0029] In this embodiment: Please refer to Figure 3 The high-power detection module 5 includes a second diode D2, a third transistor V3, a fourth transistor V4, and a sixth resistor R6. The emitter of the third transistor V3 is connected to the negative terminal of the second diode D2 and the output terminal of the voltage output module 3. The positive terminal of the second diode D2 is connected to one end of the sixth resistor R6, the base of the fourth transistor V4, and the collector of the third transistor V3. The base of the third transistor V3 is connected to the collector of the fourth transistor V4. The other end of the sixth resistor R6 is connected to the emitter of the fourth transistor V4 and the second input terminal of the timing alarm module 6.

[0030] The output voltage of the voltage output module 3 is adjusted by adjusting the resistance of the first potentiometer RP1. When the voltage of the voltage output module 3 does not reach the threshold voltage (i.e., the maximum voltage), the second diode D2 (Zen diode) is not conducting. When the threshold voltage is reached, the second diode D2 conducts, providing a high level to the base of the fourth transistor V4 (NPN). The fourth transistor V4 conducts, pulling down the base voltage of the third transistor V3 (PNP). The third transistor V3 conducts, further increasing the base voltage of the fourth transistor V4. Finally, the third transistor V3 and the fourth transistor V4 are quickly and fully turned on, providing an electrical signal to the timing alarm module 6.

[0031] In another embodiment, a light-emitting diode can be added to serve as a threshold voltage indicator.

[0032] In this embodiment: Please refer to Figure 3The timing alarm module 6 includes a seventh resistor R7, a fifth MOSFET V5, a fourth capacitor C4, a third diode D3, an eighth resistor R8, a sixth MOSFET V6, a fourth diode D4, and a speaker SPEAKER. One end of the seventh resistor R7 is connected to the output terminal of the high-power detection module 5, and the other end of the seventh resistor R7 is connected to one end of the fourth capacitor C4, the drain of the fifth MOSFET V5, and the cathode of the third diode D3. The other end of the fourth capacitor C4 is grounded, the source of the fifth MOSFET V5 is grounded, and the gate of the fifth MOSFET V5 is connected to the output terminal of the single-button control module 7. The anode of the third diode D3 is connected to one end of the eighth resistor R8 and the gate of the sixth MOSFET V6. The other end of the eighth resistor R8 is grounded, the drain of the sixth MOSFET V6 is connected to the cathode of the fourth diode D4, the anode of the fourth diode D4 is connected to the output terminal of the power supply module 1, and the source of the sixth MOSFET V6 is connected to one end of the speaker SPEAKER. The other end of the speaker SPEAKER is grounded.

[0033] When voltage is input, the fourth capacitor C4 is charged through the seventh resistor R7. As the voltage on the fourth capacitor C4 rises, the third diode D3 (Zen timer diode) is eventually turned on, causing the sixth MOSFET V6 to conduct. The speaker (SPEAKER) sounds an alarm, and the fourth diode D4 (LED) lights up as a warning. The period from voltage input to the conduction of the third diode D3 is a safe time. The power supply circuit will not have a significant impact on the components if it supplies the maximum voltage (threshold voltage) for a short period of time. However, if it is under the maximum voltage for a long time, the losses will be greater. Therefore, when the user adjusts the maximum voltage output, the timing alarm module 6 drives the timing. The alarm will only sound when the maximum voltage output time exceeds the safe time.

[0034] In another embodiment, only the fourth diode D4 or the speaker SPEAKER can be used. The fourth diode D4 and the speaker SPEAKER are complementary, so that if one is damaged, the other can continue to work to prompt the user.

[0035] In this embodiment: Please refer to Figure 4The single-button control module 7 includes a second switch S2, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a seventh transistor V7, and an eighth transistor V8. One end of the second switch S2 is connected to the output terminal of the power supply module 1, and the other end of the second switch S2 is connected to one end of the ninth resistor R9. The other end of the ninth resistor R9 is connected to the base of the seventh transistor V7 and one end of the eleventh resistor R11. The emitter of the seventh transistor V7 is grounded, and the collector of the seventh transistor V7 is connected to one end of the tenth resistor R10 and the base of the eighth transistor V8. The other end of the tenth resistor R10 is connected to the emitter of the eighth transistor V8 and the output terminal of the power supply module 1. The collector of the eighth transistor V8 is connected to the other end of the eleventh resistor R11 and the third input terminal of the timing alarm module 6.

[0036] After the timer alarm module 6 alerts the user, if continued use is required due to urgent production or other reasons, and to avoid interference from the timer alarm module 6, the user presses the second switch S2 (a push-button switch that pops up after being pressed). This turns on the seventh transistor V7 (NPN), which in turn pulls down the base voltage of the eighth transistor V8 (PNP), causing V8 to turn on. This, in turn, provides a high level to the base of the seventh transistor V7 through the eleventh resistor R11, maintaining V7's conduction. Simultaneously, it provides a high level to the gate (common point A) of the fifth MOSFET V5, grounding V5 and discharging the voltage across the fourth capacitor C4. This prevents the speaker and the fourth diode D4 from operating and affecting the user. After the circuit restarts, due to a power outage, the supply voltage VIN is disconnected, and the single-button control module 7 returns to its initial state.

[0037] In another embodiment, the seventh transistor V7 can be equipped with a pull-down resistor to prevent false triggering.

[0038] The working principle of this invention is as follows: Power supply module 1 supplies DC power to switch module 2, timing alarm module 6, and single-button control module 7; switch module 2 establishes a circuit between power supply module 1 and voltage output module 3; voltage output module 3 outputs DC voltage; feedback voltage regulation module 4 provides feedback output voltage information to voltage output module 3, ensuring stable voltage output; high-power detection module 5 detects whether the output voltage of voltage output module 3 exceeds a threshold voltage; if it does, it drives timing alarm module 6 to operate; timing alarm module 6 starts timing after operation and alarms when the timer reaches a set value; single-button control module 7 controls the operation of timing alarm module 6 via a button and automatically restores the initial state after each restart.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A voltage regulator circuit for an electronic control system, characterized in that: The voltage regulation circuit of the electronic control system includes: a power supply module for supplying DC power to the switching module, timing alarm module, and single-button control module; a switching module for establishing a loop between the power supply module and the voltage output module; a voltage output module for outputting DC voltage; a feedback voltage regulation module for feeding back output voltage information to the voltage output module, ensuring a stable output voltage; a high-power detection module for detecting whether the output voltage of the voltage output module exceeds a threshold voltage; if so, driving the timing alarm module to operate; a timing alarm module for timing after operation begins, triggering an alarm when the timer reaches a set value; and a single-button control module. The module is used to control whether the timing alarm module works via buttons, and automatically restores the initial state after each restart; the output of the power supply module is connected to the input of the switch module, the first input of the timing alarm module, and the input of the single button control module; the output of the switch module is connected to the first input of the voltage output module; the output of the voltage output module is connected to the input of the feedback voltage regulator module and the input of the high-power detection module; the output of the feedback voltage regulator module is connected to the second input of the voltage output module; the output of the high-power detection module is connected to the second input of the timing alarm module; and the output of the single button control module is connected to the third input of the timing alarm module. The high-power detection module includes a second diode, a third transistor, a fourth transistor, and a sixth resistor. The emitter of the third transistor is connected to the negative terminal of the second diode and the output terminal of the voltage output module. The positive terminal of the second diode is connected to one end of the sixth resistor, the base of the fourth transistor, and the collector of the third transistor. The base of the third transistor is connected to the collector of the fourth transistor. The other end of the sixth resistor is connected to the emitter of the fourth transistor and the second input terminal of the timing alarm module. The timing alarm module includes a seventh resistor, a fifth MOSFET, a fourth capacitor, a third diode, an eighth resistor, a sixth MOSFET, a fourth diode, and a speaker. One end of the seventh resistor is connected to the output of the high-power detection module, and the other end of the seventh resistor is connected to one end of the fourth capacitor, the drain (D) of the fifth MOSFET, and the cathode of the third diode. The other end of the fourth capacitor is grounded, the source (S) of the fifth MOSFET is grounded, and the gate (G) of the fifth MOSFET is connected to the output of the single-button control module. The anode of the third diode is connected to one end of the eighth resistor and the gate (G) of the sixth MOSFET. The other end of the eighth resistor is grounded, the drain (D) of the sixth MOSFET is connected to the cathode of the fourth diode, the anode of the fourth diode is connected to the output of the power supply module, and the source (S) of the sixth MOSFET is connected to one end of the speaker. The other end of the speaker is grounded. The single-button control module includes a second switch, a ninth resistor, a tenth resistor, an eleventh resistor, a seventh transistor, and an eighth transistor. One end of the second switch is connected to the output terminal of the power supply module, and the other end of the second switch is connected to one end of the ninth resistor. The other end of the ninth resistor is connected to the base of the seventh transistor and one end of the eleventh resistor. The emitter of the seventh transistor is grounded. The collector of the seventh transistor is connected to one end of the tenth resistor and the base of the eighth transistor. The other end of the tenth resistor is connected to the emitter of the eighth transistor and the output terminal of the power supply module. The collector of the eighth transistor is connected to the other end of the eleventh resistor and the third input terminal of the timing alarm module.

2. The voltage regulator circuit of the electronic control system according to claim 1, characterized in that, The switching module includes a first switch, a first resistor, and a first capacitor. One end of the first switch is connected to the output terminal of the power supply module, the other end of the first switch is connected to one end of the first resistor, the other end of the first resistor is connected to one end of the first capacitor and the first input terminal of the voltage output module, and the other end of the first capacitor is grounded.

3. The voltage regulator circuit of the electronic control system according to claim 1, characterized in that, The voltage output module includes a second resistor, a first transistor, a third resistor, and a second capacitor. One end of the second resistor is connected to the collector of the first transistor and the output terminal of the switching module. The other end of the second resistor is connected to the base of the first transistor. The emitter of the first transistor is connected to one end of the third resistor, one end of the second capacitor, the input terminal of the feedback voltage regulator module, and the input terminal of the high-power detection module. The other end of the third resistor is grounded, and the other end of the second capacitor is grounded.

4. The voltage regulator circuit of the electronic control system according to claim 3, characterized in that, The feedback voltage regulator module includes a fourth resistor, a fifth resistor, a first diode, a second transistor, a first potentiometer, and a third capacitor. One end of the fifth resistor is connected to the output terminal of the voltage output module and one end of the fourth resistor. The other end of the fifth resistor is connected to one end of the first potentiometer, one end of the third capacitor, and the base of the second transistor. The other end of the third capacitor is grounded. The other end of the first potentiometer is grounded. The emitter of the second transistor is connected to the other end of the fourth resistor and the cathode of the first diode. The anode of the first diode is grounded. The collector of the second transistor is connected to the base of the first transistor.

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