CN100583634C - AC power electronic switch with dual single-chips - Google Patents
AC power electronic switch with dual single-chips Download PDFInfo
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- CN100583634C CN100583634C CN200810102382A CN200810102382A CN100583634C CN 100583634 C CN100583634 C CN 100583634C CN 200810102382 A CN200810102382 A CN 200810102382A CN 200810102382 A CN200810102382 A CN 200810102382A CN 100583634 C CN100583634 C CN 100583634C
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Abstract
The invention relates to an alternating current power electronic switch reset circuit by adopting double single-chip microcomputers and pertains to the power electronic field. The AC power electronic switch reset circuit of the invention adopts two single-chip microcomputers, wherein, a first single-chip microcomputer is connected with a second single-chip microcomputer by serial communication and a display circuit and a zero-cross detection circuit are connected with the first single-chip microcomputer, while the second single-chip microcomputer is connected with a control driving circuit, a keyboard state detection circuit, a triggering state detection circuit and an over-voltage and over-current and undervoltage detection circuit which are all provided with a buzzer for tips. The first single-chip microcomputer is connected with the second single-chip microcomputer after being connected with a second reset circuit (2), while the second single-chip microcomputer is connected with the first single-chip microcomputer after being connected with a first reset circuit (1). The AC power electronic switch reset circuit of the invention adopts the two single-chip microcomputers to monitor working states between the two single-chip microcomputers, in addition to the normal operation. When one of the single-chip microcomputers has a malfunction, the other one can not only detect the malfunction in time and take the measure of the resetting so as to recover the normal operating state, but also can give an alarm to the user in time to avoid disadvantages caused by adopting only one single-chip microcomputer.
Description
Technical field
A kind of ac power electronic switch that adopts double mcu belongs to field of power electronics, can be used for controlling equipment such as motor, power regulating eqiupment.
Background technology
Adopt the ac power electronic switch of single-chip microcomputer at present, a single-chip microcomputer is all adopted in its control core, in case itself breaks down single-chip microcomputer, the whole ac power electronic switch state that will paralyse, can not report to the police, show, can not take measures, if this ac power electronic switch uses in key, hazardous environment, its consequence will be very serious; If take measures for this situation, its cost can be very high.This is the problem that its control section of present ac power electronic switch adopts a single-chip microcomputer to exist.Adopt the ac power electronic switch of two single-chip microcomputers, as Chinese patent 200620119431.0 and 200620119433.X, between two single-chip microcomputers in its control loop mutual monitoring function is only arranged, there is not controlled function each other, when some single-chip microcomputers break down (non-damageability), another single-chip microcomputer only can play reports to the police or some other the function of avoiding serious consequence, the fault single-chip microcomputer itself is not had any control action, can not make the fault single-chip microcomputer recover operate as normal from malfunction, this is the problem that adopts two single-chip microcomputers to exist.
Summary of the invention
The objective of the invention is to improve the intelligent of ac power electronic switch integral body, two single-chip microcomputers are set in control circuit, and can reset mutually between two single-chip microcomputers, avoid control section to adopt the drawback that single-chip microcomputer brought, the extension of accident is avoided in monitoring in time, control in time.
To achieve these goals, the present invention has taked following technical scheme.Comprise by circuit breaker, fast acting fuse, controllable silicon, major loop and control loop circuit that load is formed, described control loop circuit includes first single-chip microcomputer, second singlechip, zero cross detection circuit, display circuit, the control Driver Circuit of buzzing prompting, the control triggering electric circuit of controllable silicon and load, the keyboard state testing circuit, trigger state detection circuit and over-voltage and over-current undervoltage detection circuit, first single-chip microcomputer is that serial communication is connected display circuit with second singlechip, zero cross detection circuit, the control triggering electric circuit of controllable silicon and load all links to each other with first single-chip microcomputer; The control Driver Circuit of buzzing prompting, keyboard state testing circuit, triggering state detection circuit all link to each other with second singlechip with the over-voltage and over-current undervoltage detection circuit; It is characterized in that: also include first reset circuit 1 and second reset circuit 2; Wherein, first single-chip microcomputer be connected with second singlechip again after second reset circuit 2 is connected, second singlechip be connected with first single-chip microcomputer again after first reset circuit 1 is connected.
Described first reset circuit comprises the first midget relay K1, first diode, first resistance R 1, first capacitor C 1 and the 3rd resistance R 3; Described second reset circuit comprises the second midget relay K2, second resistance R 2, second capacitor C 2 and the 4th resistance R 4; The shared button switch K 3 of described first reset circuit and second reset circuit and a driver; The appearance value of described first capacitor C 1 and second capacitor C 2 is identical, and first resistance R 1 is identical with the resistance of second resistance R 2, and the 3rd resistance R 3 is identical with the resistance of the 4th resistance R 4;
Specifically being connected to of described first reset circuit and second reset circuit:
The coil of the first midget relay K1 is in parallel with first diode, the cathode terminal connection+5V power supply of first diode, and the anode tap of first diode connects an output of driver; The coil of the second midget relay K1 is in parallel with second diode, cathode terminal connection+5V the power supply of second diode, the anode tap of second diode connects another output of driver, two input control ends of driver are connected with the I/O port of first single-chip microcomputer, in addition two input control ends of driver are connected with the I/O port of second singlechip, and driver itself is powered by+5V power supply;
One end connection+5V power supply of first capacitor C 1, the other end connects the reseting port of first single-chip microcomputer, and an end of first resistance R 1 connects the reseting port of first single-chip microcomputer, the other end ground connection of first resistance R 1; One end connection+5V power supply of second capacitor C 2, the other end connects the reseting port of second singlechip, and an end of second resistance R 2 connects the reseting port of second singlechip, the other end ground connection of second resistance R 2;
One end of the 3rd resistance R 3 is connected with the reseting port of first single-chip microcomputer, and the other end of the 3rd resistance R 3 is connected with the end of the first normally opened contact K11 of the first midget relay K1 and the end of the first normally-closed contact K12 respectively; One end of the 4th resistance R 4 is connected with the reseting port of second singlechip, the other end of the 4th resistance R 4 is connected with the end of the second normally opened contact K21 of the second midget relay K2 and the end of the second normally-closed contact K22 respectively, the other end of the other end of the first normally opened contact K11 and the second normally opened contact K21 is connected with+5V power supply respectively, the other end of the first normally-closed contact K12 links together with the other end of the second normally-closed contact K22 and is connected with an end of button switch K 3, the other end connection+5V power supply of button switch K 3.
The present invention adopts two single-chip microcomputers in the ac power electronic switch control section, be provided with 3 cover reset circuits, except that 1 cover is used for the manual reset work simultaneously of normal two single-chip microcomputers, two cover reset circuits are used for when non-damage fault appears in one of them single-chip microcomputer in addition, the single-chip microcomputer that another single-chip microcomputer can in time reset and break down, and report to the police and inform the user, can improve the intelligent of ac power electronic switch integral body like this, can avoid because of can not controlling the drawback of being brought mutually between two single-chip microcomputers, for self monitoring and the daily maintenance of equipment brings convenience.
Description of drawings
Fig. 1 main loop circuit block diagram
Fig. 2 control loop circuit block diagram
Fig. 3 reset circuit block diagram
Fig. 4 reset circuit figure
Fig. 5 main loop circuit figure
Fig. 6 control loop circuit theory diagrams
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing 1～6 and embodiment.
Ac power electronic switch main loop circuit block diagram as shown in Figure 1, the control loop circuit block diagram is as shown in Figure 2.In Fig. 1, circuit breaker is used to cut off the electricity supply and being connected of fast acting fuse, controllable silicon and load, and fast acting fuse is used to protect controllable silicon, and controllable silicon is used for the power supply of break-make load.Take out every phase voltage signal from the controllable silicon two ends and deliver to the zero cross detection circuit of control section, see Fig. 2.Fig. 2 is the control loop circuit block diagram, and two single-chip microcomputers all adopt MCS-51 series 89C52 type (including the 8K flash memory), adopt serial port to communicate contact, exchange message between the two.Control command is imported from keyboard, and on display circuit the running status of display circuit.Overvoltage, overcurrent and undervoltage detection circuit are that whether monitoring electric power system voltage is normal, whether load has the overload phenomenon, in order to avoid damage Circuits System and equipment.After Fig. 2 Circuits System is received work order by keyboard, second singlechip 89C52-2 passes to the first single-chip microcomputer 89C52-1 by serial communication with order, 89C52-1 detects the zero cross fired point of main circuit thyristor by zero cross detection circuit, send trigger command by control triggering electric circuit to controllable silicon then, the controllable silicon conducting, load is started working; The buzzing cue circuit sends normal buzzing prompting by designing requirement.When certain test point work is undesired in the Circuits System, Circuits System will be controlled buzzer by controlling and driving and produce buzzing, or show malfunction by display circuit, remind the user; If some single-chip microcomputers are when the non-damage fault cisco unity malfunction occurring, another single-chip microcomputer can be by the reset circuit out of order single-chip microcomputer that resets, as shown in Figures 2 and 3.
The effect of reset circuit is no matter which kind of operating state single-chip microcomputer is in, and all can make the single-chip microcomputer work of restarting that resets.K3 is a push-button switch among Fig. 4, is used for the manual reset single-chip microcomputer, and when the K3 push-button switch closed, two single-chip microcomputers resetted simultaneously, and the K3 push-button switch is used for normal single-chip microcomputer and resets; K1 and K2 are midget relay (can adopt model G6A-234P-ST-US-DC5V), and K1 and K2 coil are driven by chip 75451, and 75451 respectively by two Single-chip Controlling, and K1 and K2 are respectively applied for the concrete operations that reset each other of two single-chip microcomputers.
When first single-chip microcomputer (or second singlechip) when non-damage fault occurring, second singlechip (or first single-chip microcomputer) can be found in real time by the serial communication between two single-chip microcomputers, second singlechip (or first single-chip microcomputer) provides low level when single-chip microcomputer operate as normal (P16 pin be high level) by the P16 pin, 6 pin of chip 75451 and 7 pin (or 1 pin and 2 pin) become low level, corresponding 5 pin (or 3 pin) also become low level (being high level during the single-chip microcomputer operate as normal), K1 (or K2) midget relay coil gets, the normally-closed contact of K1 (or K2) is opened, the normally opened contact closure of K1 (or K2), first single-chip microcomputer (or second singlechip) is reset, after the work of resetting is finished, it is high level state that second singlechip (or first single-chip microcomputer) recovers the P16 pin, thereby finish the work that resets between the single-chip microcomputer, as shown in Figure 4.
Main loop circuit figure as shown in Figure 5.The control loop circuit diagram as shown in Figure 6.
Claims (1)
1, a kind of ac power electronic switch that adopts double mcu, comprise by circuit breaker, fast acting fuse, controllable silicon, major loop and control loop circuit that load is formed, described control loop circuit includes first single-chip microcomputer, second singlechip, zero cross detection circuit, display circuit, the control Driver Circuit of buzzing prompting, the control triggering electric circuit of controllable silicon and load, the keyboard state testing circuit, trigger state detection circuit and over-voltage and over-current undervoltage detection circuit, first single-chip microcomputer is that serial communication is connected display circuit with second singlechip, zero cross detection circuit, the control triggering electric circuit of controllable silicon and load all links to each other with first single-chip microcomputer; The control Driver Circuit of buzzing prompting, keyboard state testing circuit, triggering state detection circuit all link to each other with second singlechip with the over-voltage and over-current undervoltage detection circuit; It is characterized in that: also include first reset circuit (1) and second reset circuit (2); Wherein, first single-chip microcomputer be connected with second singlechip again after second reset circuit (2) is connected, second singlechip be connected with first single-chip microcomputer again after first reset circuit (1) is connected;
Described first reset circuit comprises first midget relay (K1), first diode, first resistance (R1), first electric capacity (C1) and the 3rd resistance (R3); Described second reset circuit comprises second midget relay (K2), second resistance (R2), second electric capacity (C2) and the 4th resistance (R4); The shared push-button switch of described first reset circuit and second reset circuit (K3) and a driver; The appearance value of described first electric capacity (C1) and second electric capacity (C2) is identical, and first resistance (R1) is identical with the resistance of second resistance (R2), and the 3rd resistance (R3) is identical with the resistance of the 4th resistance (R4);
Specifically being connected to of described first reset circuit and second reset circuit:
The coil of first midget relay (K1) is in parallel with first diode, the cathode terminal connection+5V power supply of first diode, and the anode tap of first diode connects an output of driver; The coil of second midget relay (K1) is in parallel with second diode, cathode terminal connection+5V the power supply of second diode, the anode tap of second diode connects another output of driver, two input control ends of driver are connected with the I/O port of first single-chip microcomputer, in addition two input control ends of driver are connected with the I/O port of second singlechip, and driver itself is powered by+5V power supply;
One end connection+5V power supply of first electric capacity (C1), the other end connects the reseting port of first single-chip microcomputer, and an end of first resistance (R1) connects the reseting port of first single-chip microcomputer, the other end ground connection of first resistance (R1); One end connection+5V power supply of second electric capacity (C2), the other end connects the reseting port of second singlechip, and an end of second resistance (R2) connects the reseting port of second singlechip, the other end ground connection of second resistance (R2);
One end of the 3rd resistance (R3) is connected with the reseting port of first single-chip microcomputer, and the other end of the 3rd resistance (R3) is connected with an end of first normally opened contact (K11) of first midget relay (K1) and an end of first normally-closed contact (K12) respectively; One end of the 4th resistance (R4) is connected with the reseting port of second singlechip, the other end of the 4th resistance (R4) is connected with an end of second normally opened contact (K21) of second midget relay (K2) and an end of second normally-closed contact (K22) respectively, the other end of the other end of first normally opened contact (K11) and second normally opened contact (K21) is connected with+5V power supply respectively, the other end of first normally-closed contact (K12) links together with the other end of second normally-closed contact (K22) and is connected with an end of push-button switch (K3), the other end connection+5V power supply of push-button switch (K3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810102382A CN100583634C (en) | 2008-03-21 | 2008-03-21 | AC power electronic switch with dual single-chips |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810102382A CN100583634C (en) | 2008-03-21 | 2008-03-21 | AC power electronic switch with dual single-chips |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101262215A CN101262215A (en) | 2008-09-10 |
| CN100583634C true CN100583634C (en) | 2010-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810102382A Expired - Fee Related CN100583634C (en) | 2008-03-21 | 2008-03-21 | AC power electronic switch with dual single-chips |
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| CN (1) | CN100583634C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102419796B (en) * | 2011-11-28 | 2014-06-18 | 上海理工大学 | Pulse width modulation (PWM) signal anti-interference output system for medical equipment and anti-interference method for PWM signal anti-interference output system |
| CN105388886B (en) * | 2015-11-20 | 2017-12-29 | 康泰医学系统（秦皇岛）股份有限公司 | A kind of instrument single-chip microcomputer work observation circuit and method |
| CN106054868A (en) * | 2016-08-12 | 2016-10-26 | 北京车和家信息技术有限责任公司 | Finished vehicle controller and vehicle |
| CN109412568B (en) * | 2019-01-03 | 2024-04-02 | 歌尔科技有限公司 | Reset circuit for switching on and switching off |
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| CN101262215A (en) | 2008-09-10 |
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Granted publication date: 20100120 Termination date: 20110321 |