CN111030473A - Pulse-adjustable power output circuit and failure detection method thereof - Google Patents
Pulse-adjustable power output circuit and failure detection method thereof Download PDFInfo
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- CN111030473A CN111030473A CN201911294546.1A CN201911294546A CN111030473A CN 111030473 A CN111030473 A CN 111030473A CN 201911294546 A CN201911294546 A CN 201911294546A CN 111030473 A CN111030473 A CN 111030473A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/34—Conversion of dc power input into dc power output with intermediate conversion into ac by dynamic converters
- H02M3/38—Conversion of dc power input into dc power output with intermediate conversion into ac by dynamic converters using mechanical contact-making and -breaking parts to interrupt a single potential
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Abstract
The invention discloses a pulse-adjustable power output circuit, which comprises a single chip microcomputer, a pulse adjusting circuit and a failure detection circuit, wherein the single chip microcomputer is connected with the pulse adjusting circuit and is used for adjusting the pulse size of a power supply M of the pulse adjusting circuit by controlling the level of the pulse adjusting circuit; the failure detection circuit is connected with the singlechip and is used for detecting whether a loop formed by the pulse regulation circuit is normal or not; the invention also discloses a power output circuit failure detection method. When the invention is used, the single chip microcomputer adjusts the pulse size of the power supply M of the single chip microcomputer by controlling the level of the pulse adjusting circuit, and the failure detection circuit detects whether a loop formed by the pulse adjusting circuit is normal or not by the single chip microcomputer; the whole process is simple and reliable, and the circuit has few design components and parts, low cost and easy popularization.
Description
Technical Field
The invention belongs to the technical field of power supply pulse adjustment, and particularly relates to a pulse-adjustable power supply output circuit and a failure detection method thereof.
Background
The existing circuit for generating the pulse power supply is mainly a high-frequency transformer pulse power supply generating circuit based on single-chip microcomputer control, adopts a compensation type self-excited oscillation of a variable-frequency transformer (2-4 windings) and a capacitor, and couples pulses through a transformer to achieve the effect of transmitting pulses, so that the circuit has the defects of poor EMI effect, self-excited oscillation attenuation compensation, high transformer cost and the like; and the pulse power generator chip such as the NE555 chip is adopted, and the defects of more peripheral circuit components, high chip cost and the like exist.
Disclosure of Invention
In order to solve the problems, the invention provides a pulse-adjustable power output circuit, the pulse size of a power supply in the pulse adjustment circuit is controlled by a single chip microcomputer, and meanwhile, a power supply loop can be detected by a failure detection circuit, so that the whole design component is few, and the cost is low.
Another object of the present invention is to provide a method for detecting failure of a power output circuit.
The technical scheme adopted by the invention is as follows:
a pulse-adjustable power output circuit comprises a single chip microcomputer, a pulse adjusting circuit and a failure detection circuit, wherein the single chip microcomputer is connected with the pulse adjusting circuit and is used for adjusting the pulse size of a power supply M of the pulse adjusting circuit by controlling the level of the pulse adjusting circuit; and the failure detection circuit is connected with the singlechip and is used for detecting whether a loop formed by the pulse regulation circuit is normal or not.
Preferably, the device further comprises a key module, and the key module is connected with the single chip microcomputer.
Preferably, the pulse adjusting circuit comprises a fourth triode Q4, the base of the fourth triode Q4 is connected with the parallel circuit of a twenty-fourth resistor R24 and a twelfth capacitor C12, the parallel circuit is connected with a ninth pin LC _ MAIN _ CONTROL _ PWM of the single chip microcomputer, one path of the collector of the fourth triode Q4 is connected with VCC _ BAT through a first inductor L1, the other path is connected with a first diode D1, one path of the emitter of the fourth triode Q4 is grounded, and the other path is connected with an eighth capacitor C8; the chip is characterized by further comprising a chip CN2, a power supply M is connected between the first pin and the second pin of the chip CN2, the third pin and the fourth pin of the chip CN2 are connected, and the third pin and the fourth pin are connected and then connected with the second pin of the chip CN2 through a twenty-sixth resistor R26; the first pin of the chip CN2 is connected with the emitter of a third triode Q3, the base of the third triode Q3 is connected with the collector of a sixth triode Q6 through a twenty-fifth resistor R25, the emitter of the sixth triode Q6 is grounded, the base of the sixth triode Q6 is connected with the fourteenth pin of the single chip microcomputer through a twenty-seventh resistor R27, and the twenty-seventh resistor R27 is connected with a thirteenth capacitor C13 in parallel.
Preferably, the failure detection circuit comprises a zener diode ZD1, one end of the zener diode ZD1 is grounded, and the other end of the zener diode ZD1 is connected with an input SIGNAL port LC _ SIGNAL _ DETECK of the single chip microcomputer through an eighteenth resistor R18.
Preferably, the key module includes a fifth resistor R5, one end of the fifth resistor R5 is connected to VCC, the other end is connected to a power-on key SW1, the power-on key SW1 is grounded through an eleventh resistor R11, the power-on key SW1 is connected in parallel to an increase key SW2 and a decrease key SW3, and the increase key SW2 and the decrease key SW3 are grounded to the eleventh resistor R11 through a twelfth resistor R12 and a thirteenth resistor R13, respectively.
Preferably, the single chip microcomputer is STM32L011F 4.
Preferably, the eighth capacitor C8 is a high-voltage patch capacitor.
Preferably, the first diode D1 is an anti-reverse diode.
A power output circuit failure detection method applies the pulse-adjustable power output circuit, and specifically comprises the following steps:
when the output end of the single chip microcomputer detection failure detection circuit is at a high level, the power output circuit is judged to be normal;
and when the output end of the single chip microcomputer detection failure detection circuit is zero, judging that the power output circuit is abnormal.
Preferably, the method further comprises: and when the power output circuit is judged to be abnormal, the ninth pin LC _ MAIN _ CONTROL _ PWM of the singlechip is closed.
Compared with the prior art, when the invention is used, the single chip microcomputer adjusts the pulse size of the power supply M of the single chip microcomputer by controlling the level of the pulse adjusting circuit, and the failure detection circuit detects whether a loop formed by the pulse adjusting circuit is normal or not by the single chip microcomputer; the whole process is simple and reliable, and the circuit has few design components and parts, low cost and easy popularization.
Drawings
Fig. 1 is a circuit diagram of a power output circuit with adjustable pulses according to embodiment 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "vertical", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not mean that the device or member to which the present invention is directed must have a specific orientation or position, and thus, cannot be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
The embodiment 1 of the invention provides a pulse-adjustable power output circuit, which comprises a single chip microcomputer 1, a pulse adjusting circuit 2 and a failure detection circuit 3, wherein the single chip microcomputer 1 is connected with the pulse adjusting circuit 2 and is used for adjusting the pulse size of a power supply M of the pulse adjusting circuit 2 by controlling the level of the pulse adjusting circuit 2; the failure detection circuit 3 is connected with the singlechip 1 and is used for detecting whether a loop formed by the pulse regulation circuit 2 is normal or not;
thus, with the structure, the single chip microcomputer 1 adjusts the pulse size of the power supply M by controlling the level of the pulse adjusting circuit 2, and the failure detecting circuit 3 detects whether a loop formed by the pulse adjusting circuit 2 is normal or not through the single chip microcomputer 1; the whole process is simple and reliable, and the circuit has few design components and parts, low cost and easy popularization.
The intelligent control system further comprises a key module 4, wherein the key module 4 is connected with the single chip microcomputer 1.
The pulse adjusting circuit 2 comprises a fourth triode Q4, the base of the fourth triode Q4 is connected with the parallel circuit of a twenty-fourth resistor R24 and a twelfth capacitor C12, the parallel circuit is connected with a ninth pin LC _ MAIN _ CONTROL _ PWM of the single chip microcomputer 1, one path of the collector of the fourth triode Q4 is connected with VCC _ BAT through a first inductor L1, the other path of the collector of the fourth triode Q4 is connected with a first diode D1, one path of the emitter of the fourth triode Q4 is grounded, and the other path of the emitter of the fourth triode Q4 is connected with an eighth capacitor C8; the chip is characterized by further comprising a chip CN2, a power supply M is connected between the first pin and the second pin of the chip CN2, the third pin and the fourth pin of the chip CN2 are connected, and the third pin and the fourth pin are connected and then connected with the second pin of the chip CN2 through a twenty-sixth resistor R26; the first pin of the chip CN2 is connected with the emitter of a third triode Q3, the base of the third triode Q3 is connected with the collector of a sixth triode Q6 through a twenty-fifth resistor R25, the emitter of the sixth triode Q6 is grounded, the base of the sixth triode Q6 is connected with the fourteenth pin of the single chip microcomputer 1 through a twenty-seventh resistor R27, and the twenty-seventh resistor R27 is connected in parallel with a thirteenth capacitor C13.
The failure detection circuit 3 comprises a voltage stabilizing diode ZD1, one end of the voltage stabilizing diode ZD1 is grounded, and the other end of the voltage stabilizing diode ZD1 is connected with an input SIGNAL port LC _ SIGNAL _ DETECK of the singlechip 1 through an eighteenth resistor R18.
The key module 4 includes a fifth resistor R5, one end of the fifth resistor R5 is connected to VCC, the other end is connected to a power-on key SW1, the power-on key SW1 is grounded through an eleventh resistor R11, the power-on key SW1 is connected in parallel to an increase key SW2 and a decrease key SW3, and the increase key SW2 and the decrease key SW3 are grounded through a twelfth resistor R12 and a thirteenth resistor R13, respectively, and the eleventh resistor R11.
The single chip microcomputer 1 is STM32L011F 4.
The eighth capacitor C8 is a high-voltage patch capacitor.
The first diode D1 is an anti-reverse diode.
The working process is as follows:
when the 'LC _ MAIN _ CONTROL _ PWM' and the 'LC _ AUX _ CONTROL _ PWM' are at a low level, the fourth triode Q4 is turned off, and the first inductor L1 and the eighth capacitor C8 form an LC series resonant circuit;
the complex impedance of the resistor is:
Zin(ω)＝RD1+jωL1+(1/jωC8) (1)
the resonance frequency points are:
the pulse frequency of the power supply M can be determined through the formulas (1) and (2);
when the "LC _ MAIN _ CONTROL _ PWM" and the "LC _ AUX _ CONTROL _ PWM" are at a high level, the first inductor L1 is grounded through the fourth transistor Q4, so that energy is stored from VCC _ BAT to the first inductor L1 to wait for the next resonance to release energy to the eighth capacitor C8;
the eighth capacitor C8 prevents reverse discharge through the first diode D1, and the third triode Q3 and the sixth triode Q6 are turned on, and the voltage of the eighth capacitor C8 is considered to be constant in a very short period when the LC _ AUX _ CONTROL _ PWM is at a high level;
calculating to obtain the output voltage V of the pulse power supply M according to the resonance Q valueout≈VC8；
The voltage is as follows: u shapeC8＝Q×VCC_BAT；
The Q calculation method comprises the following steps:
in the above formula, RD1 is the resistance of the first diode D1, L1 is the inductance of the first inductor, and C8 is the capacitance of the eighth capacitor.
In addition, the increase and decrease of the starting, the pulse power supply amplitude can be realized through the key module 4, which specifically comprises the following steps:
when the power-on key SW1 is pressed, the power-on key is detected, the single chip microcomputer 1 outputs "LC _ MAIN _ CONTROL _ PWM", and the output voltage of the key module 4 is:
in the above formula, Vdetect is the output voltage of the key module 4, R11 is the resistance of the eleventh resistor R11, and R5 is the resistance of the fifth resistor R5;
when the increase key SW2 is pressed, if the pulse power supply amplitude is detected to be increased, the single chip microcomputer 1 outputs "LC _ MAIN _ CONTROL _ PWM" to be increased in proportion, and the output voltage of the key module 4 is:
in the above formula, R12 is the resistance of the twelfth resistor R12;
when the reduction key SW3 is pressed, the pulse power supply amplitude reduction key is detected, the single chip microcomputer 1 outputs "LC _ MAIN _ CONTROL _ PWM" in proportion to decrease, and the output voltage of the key module 4 is:
in the above formula, R13 is the resistance value of the thirteenth resistor R13.
In addition, whether a loop formed by the pulse adjusting circuit 2 is normal is detected by the failure detection circuit 3, which specifically comprises the following steps:
when the 'LC _ AUX _ CONTROL _ PWM' is at a high level, the pulse power supply circuit is switched on, the third triode Q3 is switched on, the singlechip 1 detects that 'LC _ SIGNAL _ DETECK' is high, the circuit is judged to work normally, if the singlechip 1 detects that 'LC _ SIGNAL _ DETECK' is 0, the circuit is judged to work abnormally and fail, the circuit is protected to be safe, and the singlechip 1 turns off the 'LC _ MAIN _ CONTROL _ PWM'.
In the embodiment, the singlechip regulates the pulse size of the power supply M by controlling the level of the pulse regulating circuit, and the failure detection circuit detects whether a loop formed by the pulse regulating circuit is normal or not by the singlechip; the whole process is simple and reliable, and the circuit has few design components and low cost.
Example 2
The embodiment 2 of the present invention provides a method for detecting a failure of a power output circuit, which applies the pulse-adjustable power output circuit described in embodiment 1, and specifically includes:
when the single chip microcomputer 1 detects that the output end of the failure detection circuit 3 is at a high level, the power output circuit is judged to be normal;
when the output end of the failure detection circuit 3 detected by the singlechip 1 is zero, the power output circuit is judged to be abnormal, and meanwhile, the ninth pin LC _ MAIN _ CONTROL _ PWM of the singlechip 1 is closed so as to protect the safety of the circuit.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A pulse-adjustable power output circuit is characterized by comprising a single chip microcomputer (1), a pulse adjusting circuit (2) and a failure detection circuit (3), wherein the single chip microcomputer (1) is connected with the pulse adjusting circuit (2) and is used for adjusting the pulse size of a power supply M of the pulse adjusting circuit (2) by controlling the level of the pulse adjusting circuit (2); the failure detection circuit (3) is connected with the singlechip (1) and is used for detecting whether a loop formed by the pulse regulation circuit (2) is normal or not.
2. The power output circuit with the adjustable pulse according to claim 1, further comprising a key module (4), wherein the key module (4) is connected with the single chip microcomputer (1).
3. A pulse adjustable power output circuit as claimed in claim 2, characterized in that the pulse adjusting circuit (2) comprises a fourth transistor Q4, the base of the fourth transistor Q4 is connected with the parallel circuit of a twenty-fourth resistor R24 and a twelfth capacitor C12, the parallel circuit is connected with the ninth pin LC _ MAIN _ CONTROL _ PWM of the monolithic computer (1), one path of the collector of the fourth transistor Q4 is connected with VCC _ BAT through a first inductor L1, the other path is connected with a first diode D1, one path of the emitter of the fourth transistor Q4 is grounded, and the other path is connected with an eighth capacitor C8; the chip is characterized by further comprising a chip CN2, a power supply M is connected between the first pin and the second pin of the chip CN2, the third pin and the fourth pin of the chip CN2 are connected, and the third pin and the fourth pin are connected and then connected with the second pin of the chip CN2 through a twenty-sixth resistor R26; the first pin of the chip CN2 is connected with the emitter of a third triode Q3, the base of the third triode Q3 is connected with the collector of a sixth triode Q6 through a twenty-fifth resistor R25, the emitter of the sixth triode Q6 is grounded, the base of the sixth triode Q6 is connected with the fourteenth pin of the single chip microcomputer (1) through a twenty-seventh resistor R27, and the twenty-seventh resistor R27 is connected in parallel with a thirteenth capacitor C13.
4. A pulse adjustable power supply output circuit according to claim 3, characterized in that the failure detection circuit (3) comprises a zener diode ZD1, one end of the zener diode ZD1 is grounded, and the other end is connected with the input SIGNAL port LC _ SIGNAL _ DETECK of the single chip microcomputer (1) through an eighteenth resistor R18.
5. A pulse adjustable power supply output circuit as claimed in claim 4, characterized in that said key module (4) includes a fifth resistor R5, said fifth resistor R5 is connected to VCC at one end, and is connected to a power-on key SW1 at the other end, said power-on key SW1 is grounded through an eleventh resistor R11, said power-on key SW1 is connected in parallel with an increase key SW2 and a decrease key SW3, and said increase key SW2 and said decrease key SW3 are grounded through a twelfth resistor R12 and a thirteenth resistor R13 and an eleventh resistor R11, respectively.
6. A pulse adjustable power supply output circuit as claimed in any one of claims 1 to 5, characterized in that the model of the single chip microcomputer (1) is STM32L011F 4.
7. The power output circuit with adjustable pulse of claim 3, wherein the eighth capacitor C8 is a high-voltage patch capacitor.
8. The pulse adjustable power supply output circuit as claimed in claim 7, wherein the first diode D1 is an anti-reverse diode.
9. A method for detecting a failure of a power output circuit, which applies the pulse-adjustable power output circuit according to any one of claims 1 to 8, specifically:
when the single chip microcomputer (1) detects that the output end of the failure detection circuit (3) is at a high level, the power output circuit is judged to be normal;
and when the single chip microcomputer (1) detects that the output end of the failure detection circuit (3) is zero, the power output circuit is judged to be abnormal.
10. The method of claim 9, further comprising: and when the power output circuit is judged to be abnormal, the ninth pin LC _ MAIN _ CONTROL _ PWM of the singlechip (1) is closed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911294546.1A CN111030473A (en) | 2019-12-16 | 2019-12-16 | Pulse-adjustable power output circuit and failure detection method thereof |
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| CN201911294546.1A CN111030473A (en) | 2019-12-16 | 2019-12-16 | Pulse-adjustable power output circuit and failure detection method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199730A (en) * | 2013-04-10 | 2013-07-10 | 浙江大学 | High-voltage pulse power supply controlled by 555 timer |
| CN203135723U (en) * | 2013-02-08 | 2013-08-14 | 广州视源电子科技股份有限公司 | Adjustable switch power supply |
| CN203620080U (en) * | 2013-12-30 | 2014-06-04 | 广东瑞德智能科技股份有限公司 | Electronic pulse massager circuit |
| CN108809277A (en) * | 2018-06-25 | 2018-11-13 | 中国人民解放军火箭军工程大学 | A kind of pulse signal generation device |
| CN208971391U (en) * | 2018-10-31 | 2019-06-11 | 南京工程学院 | A kind of adjustable Pulased power supply unit of amplitude |
-
2019
- 2019-12-16 CN CN201911294546.1A patent/CN111030473A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203135723U (en) * | 2013-02-08 | 2013-08-14 | 广州视源电子科技股份有限公司 | Adjustable switch power supply |
| CN103199730A (en) * | 2013-04-10 | 2013-07-10 | 浙江大学 | High-voltage pulse power supply controlled by 555 timer |
| CN203620080U (en) * | 2013-12-30 | 2014-06-04 | 广东瑞德智能科技股份有限公司 | Electronic pulse massager circuit |
| CN108809277A (en) * | 2018-06-25 | 2018-11-13 | 中国人民解放军火箭军工程大学 | A kind of pulse signal generation device |
| CN208971391U (en) * | 2018-10-31 | 2019-06-11 | 南京工程学院 | A kind of adjustable Pulased power supply unit of amplitude |
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