CN101202185A - Intelligent secure prevention circuit breakers - Google Patents

Abstract

The invention belongs to the technical field of electric appliance, comprising a contact unit, a tripping mechanism and an intelligent electronic control system. The invention not only has overload long-delay protection, short circuit short-delay protection, and short circuit instantaneous protection, etc. basic protection functions, but also has the functions of temperature fire detection protection, electromagnetic spark detection protection, creepage protection, grounding protection and over-voltage protection. The basic protection functions of the invention can automatically switch a rating current to a most favorable rating value according to various loads of each time period and the setting of the rating current value can be realized by the intelligent learning function of the invention and avoids a complex manual setting. The rating current set by the learning can more accurately reflect the actual current load of each time period, so as to get the best safe protection effect and to guarantee a safe running of electric appliances and lines and prevent the occurrence of human injury, plant accident and fire. The intelligent learning and automatic shift control theory of the invention is applicable to various high, middle and low breakers and vacuum breakers.

Description

Intelligent secure prevention circuit breakers

Technical field

The invention belongs to the high and low pressure technical field of electric appliances

Background technology

Modern society; people's production, life be unable to do without; circuit breaker is most basic electric elements in power transmission and distribution; play a part distribution, control, protection to electric energy; the various aspects that are widely used in power plant, transformer station, machinery, chemical industry, metallurgy, electric power, weaving, mine, agricultural, building, national defence and national economy; it can be under the bringing onto load situation closure or disjunction power supply, and to power consumption equipment with play a part overload and short-circuit protection with electric line.Occupy extremely important position in the power transmission and distribution field, occupation rate of market is high, all uses it from household electricity to the various occasions of industrial, agricultural, commerce, school and machine-operated cause.

The circuit breaker of at present domestic and international electrical equipment production and use; mainly contain breaker of plastic casing, frame-type circuit breaker and vacuum circuit-breaker etc.; they mainly are made of overload long delay protection, the protection of short circuit short time delay, short circuit instantaneous protection and operating mechanism etc., and some product has also added the function of earth leakage protective, ground protection.

Circuit breaker mainly contains two big functions, and the one, under normal circumstances, do frequently not close, parallel circuit or starting, stop power consumption equipment, be i.e. switching function; Another function be transship at circuit or equipment, during fault such as short circuit; automatically cut off the electricity supply; protected; it also is defencive function; defencive function is the crucial function of use of circuit breaker; the user is a rated current of selecting circuit breaker by the expection maximum load current when selecting circuit breaker.

Dispatch from the factory after all fixing or disposable the adjusting of the rated current of various circuit breakers, customized good its rated current specification when promptly dispatching from the factory, the user can only select for use by current specification, generally can not customize its current specification size.Though the rated current of some circuit breaker can be done some adjustment by the user, all be to belong to disposable to adjust, not only setting range is limited, and once adjusting, its rated current specification is in operation and can not adjusts automatically or change.

Though well-known electric corporation both domestic and external has in recent years adopted modern electronic technology and computer technology development and Design some novel intelligent breakers, as: the 3VT breaker of plastic casing of Siemens and 3WT omnipotent breaker; The SACE megamax air circuit of ABB AB; Though the EasyPact breaker of plastic casing of Schneider company and the World super WS Series Circuit Breakers of Mitsubishi and homemade moral power west CDW7 series omnipotent breaker etc. have all had rapid progress on performance; but not bigger variation of its basic principle and function; its main defencive function is still overload long delay protection, the protection of short circuit short time delay, short circuit instantaneous protection, and these protections are based on all that rated current Ir carries out.

The user is designing, selecting for use the basic principle of circuit breaker to be: the short circuit current of (expection) may appear in the specified short circuit breaking capacity 〉=circuit of circuit breaker.General 1.05～1.25 times of rated current Ir that choose circuit breaker by load current; if load current is less than 90% of rated current Ir; then the overload protection sensitivity of circuit breaker begins to descend; if load current is less than 50% of rated current Ir; then circuit breaker will lose normal delay protection function; if load current less than rated current Ir 25% or lower; then circuit breaker will lose normal short circuit instantaneous protection function; the circuit breaker overload; the protection range of short-circuit protection function is to carry out according to the size of rated current Ir, will lose due defencive function if load current exceeds the protection range circuit breaker of specified electric current I r.

Because in service can not the change of rated current Ir of circuit breaker, circuit breaker can not effectively be protected the safety of power consumption equipment and circuit when causing user load to alleviate, and finally causes personal equipment breakdown, even directly causes serious fire.

Yet; the user is when using various circuit breaker; a circuit breaker back has many load equipments often; and each load equipment is in the not operation simultaneously of different time; and when the circuit breaker type selecting, can only select the rated current of circuit breaker according to maximum load; especially in the electric distribution system especially like this; this will cause user load to alleviate or when unloaded circuit breaker lose due overload; short-circuit protection function; can not effectively protect power consumption equipment and with the safety of electric line; this is extremely serious potential safety hazard, and a lot of very serious consequences all cause thus! Therefore; many experienced electrical design personnel, safety manager and the staff who is engaged in electric installation and electrical maintenance drum in: the rated current of circuit breaker must be complementary with actual loading; otherwise, can not protect the safety of load equipment and circuit.

Summary of the invention

The invention purpose is to provide a kind of wisdom learning functionality that has; and rated current can be made the intelligent secure prevention circuit breakers of corresponding change according to load variations; also provide detection defencive function, electromagnetic surveying defencive function, creepage protection function, ground protection function and over-voltage protection function simultaneously, to reach the purpose of effective protection load equipment and electricity consumption line security.Because the rated current of intelligent secure prevention circuit breakers does not need artificial setting; and finish by the study of following the tracks of load variations by the learning functionality of intelligent secure prevention circuit breakers of the present invention; after finishing, study promptly changes running status over to; rated current is followed according to load variations and is converted into best load current value in good time, with guarantee intelligent secure prevention circuit breakers have sensitivity, accurately, safety, reliably protecting is with the ability of electric line and load equipment.

It is to control core that intelligent secure prevention circuit breakers of the present invention adopts single-chip microcomputer or other computer, is furnished with display, the electronic control system (5) that keyboard and control corresponding software constitute, therefore, intelligent secure prevention circuit breakers is the circuit breaker with artificial intelligence, electronic control system (5) is by the current sensing signal of A/D conversion with collection, the temp. type fire detection signal, electromagnetic type spark detection signal, the electric leakage transducing signal, ground connection transducing signal and overvoltage signal convert digital signal corresponding to, so that memory storage and processing, between A/D conversion and each transducer, also be provided with signal conditioning circuit, to finish the preliminary treatment of transducing signal.

Through the output control information after single-chip microcomputer computing, memory storage, the data processing, whether carry out pre-alarm, thread off and move according to the heat transfer agent control of gathering.Electromagnet M1 is the outside executive component of electronic control system (5); drive trip gear (2), contact system (1) are finished intelligent secure prevention circuit breakers dropout protection action, and light-emitting diode D11 Homeway.com Chinese percussion instrument LS1 is the outside acoustic-optic alarm of electronic control system (5).

The computing of intelligent secure prevention circuit breakers, memory storage, data processing and protection controlled function are to finish by electronic control system (5); electronic control system (5) is because employing is the hardware configuration of core with the single-chip microcomputer; so its hardware circuit is relatively simple, mainly constitute by the single-chip microcomputer that has A/D converter, clock generator, program storage, data storage and a plurality of outside port, PORT COM and keyboard, display etc.Software program is mainly by initialize routine, signal acquisition process program, memory storage program; compositions such as operation control program, real-time clock program and display routine, warning and drive controlling program, keyboard to set up program; in addition, the software program of electronic control system (5) also comprises defencive function programs such as the protection of overload long delay, the protection of short circuit short time delay, short circuit instantaneous protection, temp. type detection protection, the protection of electromagnetic type spark detection, ground protection, earth leakage protective, overvoltage protection.

The memory storage that learning program is followed the tracks of actual loading by operation is gathered circuit breaker real-time working electric current automatically, then is stored in the data storage time memory of the operating current of the variation of the different time of gathering and the variation of different operating electric current.In the operation control program, again the different current values of memory storage be multiply by behind the corresponding coefficient load current value as the operation control program, the time that the different load current values of memory storage are changed finishes the rated current of circuit breaker and sets and setting switching time as value switching time of the rated current of operation control program.

The time that the different current value of each time period of operation control program by reading and carry out memory storage and different rated current change, reproduce the result of study, each time respective electrical flow valuve that the operation control program reads is through after the computing, switch in the current working procedure as current load current value, reach purpose according to the different rated current of different load size conversion, realization comes the effect of the best rated current of conversion according to load variations, make the electric loading of using of respectively corresponding each time period of each rated current, satisfy the result that best rated current is set, each load current value and time value also can be set and revise by keyboard according to actual loading except that by the learning and memory storage by the user.And the automatic switchover that realizes rated current is controlled; obtain rated current and follow border load current variation factually and the best protection characteristic of change; sensitive, safe and reliable protection load equipment and with the safety of electric line is stopped the electrical fire that a variety of causes may cause.

In order to set or revise rated current, real-time clock, temp. type detection setting, the setting of electromagnetic type spark detection, earth leakage protective setting, ground protection setting, voltage protection setting and other parameters; the present invention is equipped with the keyboard to set up program, so that by keyboard to set up or modification rated current and other set point parameter.For the needs the present invention who satisfies the operation control program is provided with real-time clock, so that learning program can memory storage time of changing of each electric current, and the time that each rated current of memory storage of also needing to reduce in working procedure changes is to realize the automatic switchover control of rated current.Real-time clock can be served as by the special clock chip, can be realized that also clock is realized by software programming in intelligent secure prevention circuit breakers of the present invention by the single-chip microcomputer IC1 of electronic control system (5) by software programming, and program flow diagram is seen Fig. 5.

Display routine is in order to read clock, rated current and other parameter; report to the police and dropout drive controlling, the pre-alarm control of Output Control Program in order to finish circuit breaker; the signal acquisition process program is in order to gather current sensor, detection transducer, electromagnetism spark detector, electricity leakage sensor, grounding sensor, pressure sampling circuit and other input informations; the protection of overload long delay, the short time delay that opens circuit protection, short circuit instantaneous protection program are the basic defencive function programs of circuit breaker of the present invention, and they serve as to calculate benchmark with rated current Ir all.

The rated current setting of intelligent secure prevention circuit breakers and rated current are switched the study by electronic control system (5), the operation control program is realized, learning program selects to enter learning program by the S14 learning key, automatically gather the real-time working electric current during operation learning program, time and current value that the memory storage electric current changes, then, the time that in the operation control program electric current of gathering storage is changed is as rated current switching time, the base current of the current value of gathering storage, multiply by the rated current that corresponding coefficient promptly obtains switching time with base current as rated current.Each rated current switching time time period and each rated current basic value are stored in the corresponding storage unit of memory, so that read each section period and the respective electrical flow valuve of storage when the operation control program, just move the learning outcome of learning program.

By the numerical key of keyboard and cooperating of function key; except that can be to rated current, the switching time of each time period setting, revise; can also set temperature detection set point, electromagnetic type spark detection set point, earth leakage protective set point, ground protection set point value, voltage protection set point and other parameters, specifically can be referring to the keypad function table.

The electronic control system of intelligent secure prevention circuit breakers of the present invention (5) when any one road transducing signal of gathering during greater than set point, is sent execution command by computing, after handling, and release electromagnet M1 is finished thread off the protection action through drive controlling.Electronic control system (5) also is provided with prealarm circuit, sends acousto-optic in the time of before near the protection operating value and gives alarm signal.

The electricity consumption load variations of switching the tracking expection owing to the rated current variation and the rated current of intelligent secure prevention circuit breakers changes; thereby realized being set on the best rated value according to the rated current of actual loading with circuit breaker; therefore; the rated current of intelligent secure prevention circuit breakers of the present invention can switch to best rated current by each time actual loading of power consumption equipment fully, realizes the best safety protection of circuit breaker to the high sensitivity of power consumption equipment and electric line, high reliability, high safety performance.

Simultaneously; temp. type detection protection provided by the invention, the protection of electromagnetism spark detection, earth leakage protective, ground protection and overvoltage protection can be protected power consumption equipment and with the safety of electric line comprehensively and effectively; avoid because accident and the fire that various electric fault causes; the personal life that ensures power consumption equipment and user obtains reliably, safety guarantee to greatest extent; avoid family and country, social property to suffer a loss, really realize the intellectuality and the hommization of breaker safe protection.

The learning functionality of intelligent secure prevention circuit breakers of the present invention; solved circuit breaker use in the rated current difficulty of adjusting; and the unalterable drawback of rated current under the operating state; realized that the circuit breaker rated current is automatically by actual loading size automatic setting; in servicely automatically switch to corresponding best rated current; easy and simple to handle; the electric current that can follow the tracks of load in advance changes and timely conversion rated current, has fundamentally solved the rated current of circuit breaker and the malfunctioning world-famous puzzle of protection that causes with not matching between electric loading.

The present invention has greatly improved the ability and the reliability of circuit breaker safeguard protection power consumption equipment; can change automatic timely modification rated current according to actual loading; rated current is switched on the best load current value in good time; the learning functionality of wisdom has not only been saved loaded down with trivial details rated current and has been adjusted and time set; and the running parameter of the more realistic operation of memory storage information after the study; more scientifically reflect the variation of actual loading; overload protection and short-circuit protection had special protection effect; no matter this highly sensitive accurate protective capability is to power consumption equipment or to transmission line, and what provided all is high sensitivity; high reliability; the best protection of high safety performance.

In the on-the-spot utilization and operation of actual production life; because that the rated current specification of circuit breaker is selected for use is improper, load current value is adjusted inaccurate; or owing to the big malfunctioning fault of breaker protection that causes of variation of each time power load of power consumption equipment often takes place; so that it is of common occurrence to cause personal equipment breakdown therefrom, even causes serious fire.And intelligent secure prevention circuit breakers of the present invention has fundamentally solved long-term puzzlement user type selecting difficulty; the problem that the load current value of adjusting is more difficult; as long as the user has selected maximum rated current; other automatically switch to suitable rated current by intelligent secure prevention circuit breakers according to the variation of actual loading; other comprehensive safeguard protections in addition, thus power consumption equipment and line security can more effectively be protected.

The wisdom control principle of the electronic control system of intelligent secure prevention circuit breakers of the present invention (5) is applicable to the renewal and the product renewal of various circuit breakers such as breaker of plastic casing, frame-type circuit breaker, vacuum circuit-breaker, its electronic control system (5) can be made modular construction, is convenient to be installed on the various circuit breakers.

Description of drawings

Fig. 1: intelligent secure prevention circuit breakers theory diagram

Fig. 2: electronic control system (5) schematic diagram

Fig. 3: main program flow chart

Fig. 4: interrupt handling routine flow chart

Fig. 5: real-time clock program flow diagram

Fig. 6: keyboard scan program flow diagram

Fig. 7: dropout defence program flow chart

Fig. 8: operation control program flow chart

Fig. 9: A/D Transformation Service program flow diagram

Figure 10: code conversion subroutine flow chart

Figure 11: update displayed program flow diagram

Figure 12: key assignments analysis and processing program flow chart

Figure 13: learning program flow chart

Figure 14: function treatment subroutine flow chart

Figure 15: the rated current range is handled subroutine flow chart

Figure 16: subroutine flow chart is handled in the time time control

Figure 17: the time divides control to handle subroutine flow chart

Figure 18: increment (+) is handled subroutine flow chart

Figure 19: decrement (-) is handled subroutine flow chart

Figure 20: subroutine flow chart is handled in deletion (Del)

Embodiment

Provide a kind of concrete execution mode below in conjunction with accompanying drawing, further specify the operation principle of intelligent secure prevention circuit breakers and the Single Chip Microcomputer (SCM) program memory of electronic control system (5) and deposit the program implementation step, before the present invention is discussed, relating to high-performance typical case single-chip microcomputer generally consists of the following components: microprocessor MCU, program storage and data storage, or program, data general-purpose memory, a plurality of input/output end ports, multi-channel a/d converter, resource collections such as a plurality of Timer, PORT COM form.

Wherein program storage is used to deposit command sequence (executive program) and data, MCU by read and executive memory in relevant executive program and the related data operating result of finishing expection.Input/output end port is used for the external hardware resource of join dependency, as display, keyboard, actuator etc., and with its exchange message, transmit data and control is carried out.Multi-channel a/d converter is used to connect external sensor and gathers outside analog quantity parameter, here be used to gather current sensor, leakage current transformer, grounding sensor, transducing signals such as voltage sensor, for MCU computing and processing provide necessary analog quantity input information, data storage then is used for store data, constant, the result of form and calculation process, the counting of base and timing and external clock or external event when Timer is used to produce, PORT COM is used for remote other the outside relevant devices that connect, and with its exchange message and communication contact.In the single-chip microcomputer family that the present invention relates to, be integrated with CCP seizure/comparator/resources such as pwm pulse modulator in addition, the serviceability of the power of single-chip microcomputer and excellence and very little volume, have benefited from the maturation of modern large scale integrated circuit manufacturing technology fully, adopt the control system of single-chip microcomputer will obtain intellectuality, miniaturization, modularization and high-performance, good result cheaply.

Study and experience are told us: if command sequence (program) is that be concerned with, logical, then executive program will produce expectation and gratifying result in advance.The electronic control system of intelligent secure prevention circuit breakers (5) makes internal resource and external resource co-ordination by the software program in its Single Chip Microcomputer (SCM) program memory, finishes intelligent secure prevention circuit breakers numerical operation and data processing, realizes the automatic operation result of expectation.

Systematic schematic diagram according to intelligent secure prevention circuit breakers shown in Figure 1: processing assembling fixed contact assembly (1) and current sensor, moving contact component (2), tripping mechanism (3), release electromagnet M1 and electronic control system (5), its tripping mechanism (3) can adopt semiaxis formula tripping mechanism as shown in Figure 1 or adopt the tripping mechanism of other modes.

Electronic control system (5) is the control core of intelligent secure prevention circuit breakers, for improving the overall performance and the Comprehensive Control performance of system, it is the core parts of electronic control system (5) that intelligent secure prevention circuit breakers adopts with the high-performance single-chip microcomputer, the formations such as software program that are equipped with necessary display, supervisory keyboard, working power and can supply accordingly to carry out.

The electrical schematic diagram of electronic control system (5) is seen Fig. 2, mainly is made of single-chip microcomputer IC1, display, supervisory keyboard and working power etc.Single-chip microcomputer IC1 internal resource includes: the program storage of depositing executive program; Deposit the data storage of constant, coefficient and variable, data and intermediate object program and the register array that data storage is formed; The I/O port and a plurality of Timer that connect external equipment; CCP seizure/comparison/pulse modulation controller; PORT COM; Resources such as multi-channel a/d converter.

The end ground connection of current sensor L1-1, L1-2, L1-3, the other end connects the anode of diode D1, D2, D3 respectively, and the negative electrode of diode D1, D2, D3 meets A/D converter input AN.0, AN.1, the AN.2 of single-chip microcomputer IC1 respectively through follow-up amplifier IC2, IC3, IC4.Electricity leakage sensor L2 one end ground connection, the anode of another terminating diode D4, the negative electrode of D4 meet the AN.3 of single-chip microcomputer IC1 through follow-up amplifier IC5.Earth current transducer L3 one end ground connection, the anode of another terminating diode D5, the negative electrode of D5 meet the AN.4 of single-chip microcomputer IC1 through follow-up amplifier IC6.Overvoltage signal is taken from the dc power signal without voltage stabilizing on the filter capacitor C1, he is the function of AC power, therefore also represent the variation of AC power, voltage on the capacitor C 1 is connected on the input of follow-up amplifier IC7 after resistance R 3, R33 dividing potential drop, and the input of follow-up amplifier IC7 meets the AN.5 of single-chip microcomputer IC1.By the resistance R 8 power supply ground connection afterwards of connecting with temperature detection sensing element R9, after capacitor C 16 filtering, connect the inverting input of amplifier IC8 at the temperature fire signal of obtaining on the R9, R34 is the feedback resistance of amplifier IC8, R3 is the biasing resistor of amplifier IC8, and the output of amplifier IC8 meets the AN.6 of single-chip microcomputer IC1.Electromagnetism spark detection signal is by picking up on the electricity leakage sensor, also can be by picking up on current sensor or the grounding sensor, but on electricity leakage sensor, pick up safer.The input that meets Schmidt's amplifier IC9 after the frequency-selective network frequency-selecting of the electromagnetism spark signal that picks up via capacitor C 17 and inductance TL composition carries out shaping and amplifies, be connected on the in-phase input end of amplifier IC10 through resistance R 30 then, the output terminating diode D13 anode of amplifier IC10, the negative electrode of diode D13 connects on the inverting input that input is connected on amplifier IC10 through resistance R 31, constitute peak detector thus, the negative electrode of diode D13 also is connected to resistance R 32 and capacitor C 18, after capacitor C 18 filtering, meet the AN.7 of single-chip microcomputer IC1, resistance R 32 other end ground connection are load resistances of peak detector.

Port A is one 8 bit multiplex port, select signal to connect the base stage that drives triode Q4～Q9 respectively as the position of nixie display during his RA.0～RA.5 output state, the collector electrode of triode Q4～Q9 connects each choosing end of nixie display respectively, and the segment encode end of nixie display meets RB.0～RB.7 of single-chip microcomputer IC1 port B respectively.Port B also is a multiplexing port, forms matrix keyboard as output, RB.4～RB.7 as input by RB.0～RB.3, totally 14 operating keys, and R41～R44 is the current-limiting resistance of RB.0～RB.3.The reset circuit of forming single-chip microcomputer IC1 by resistance R 1, R2, capacitor C 13 and switch S, switch S is a reset key, MCLR the RESET input of resistance R 1 one termination single-chip microcomputer IC1, other end connecting resistance R2, capacitor C 13 and switch S, the other end ground connection of capacitor C 13 and switch S, another termination power Vdd of resistance R 2.The OSC1 of single-chip microcomputer IC1, OSC2 pin meet master clock crystal Y1 two ends and resonance capacitor C 10, C11 respectively, the TIOSO of single-chip microcomputer IC1, TIOSI pin meet second clock crystal Y2 two ends and resonance capacitor C 14, C15 respectively, the anode of the RC.2 pin sending and receiving optical diode D11 of the port C of single-chip microcomputer IC1, cathode biasing resistor R4, the R5 of light-emitting diode D11, another termination triode Q1 of resistance R 5, collector electrode by triode Q1 directly promotes the LS1 alarm work, and power supply Vdd is connected on the collector electrode of triode Q1 through alarm.The RC.3 pin of the port C of single-chip microcomputer IC1 connects the light-emitting diodes tube anode that R6 meets photoelectrical coupler U2 through resistance, the minus earth of light-emitting diode, the output triode collector electrode of photoelectrical coupler U2 meets the control utmost point and the biasing resistor R7 of controllable silicon Q2, the anode of controllable silicon Q2 connects the anode of release electromagnet M1 and sustained diode 12, and the negative electrode of the other end of release electromagnet M1 and sustained diode 12 and the other end of biasing resistor R7 all are connected on the high voltage source B+.The working power of single-chip microcomputer IC1 is provided by transformer T1, the elementary winding i1 two termination AC power A1 of transformer T1, A2, be generally 220V or 380V, the ac input end of the two termination rectifier bridge D9 of secondary winding i2, the negativing ending grounding of rectifier bridge D9, the input of positive termination filter capacitor C1 and three terminal regulator U1, the output of three terminal regulator U1 meets after the filter capacitor C2 filtering directly the working power Vdd as electronic circuit and single-chip microcomputer IC1 again, the end ground connection of secondary winding i3, the anode of another termination rectifier diode D10, the negative electrode of diode D10 are directly exported high direct voltage driving power B+ after capacitor C 9 filtering.

Carry program storage and data storage in the single-chip microcomputer IC1 sheet, generally do not need to expand external program memory, and, provide the ability of on-the-spot correction factor by software programming access easily, modification constant, data and variable.The software program of intelligent secure prevention circuit breakers electronic control system (5) mainly is made up of initialization main program, interrupt service routine, key scanning handling procedure, learning program, timing routine, A/D conversion program, modification and setting program, update displayed program, pre-alarm, dropout protection control program etc., and software flow pattern is shown in Fig. 3～20.

Fig. 3 to Figure 20 illustrates the flow chart of the stored program operation of electronic control system shown in Figure 2 (5), program running is that the command sequence that response pre-deposits in the IC1 internal program memory in the microprocessor MCU of single-chip microcomputer IC1 is finished, power on or the back MCU that resets begins to carry out from main program automatically, in main program, finish the initialization of each clock timer, work register, A/D converter, each port etc., put the timer working method, open then the interruption, query key falls to indicating again: interruption is arranged; Turn key dish service routine then, otherwise inquiry A/D converts not: if convert; Change the A/D service routine, otherwise, be back to and put the timer working method, open then the interruption, query key falls to indicating that the program place carries out again.

If interrupt requests is arranged, then respond interrupt requests, enter interrupt service routine, thereafter, return main program, in interrupt service routine, will finish the execution of keyboard scan, real-time clock, A/D conversion, learning program and display routine.If there is not interrupt requests, then clear interrupt flag register returns main program and carries out.

In the keyboard scan program, if there is key to press; Then inquire about key assignments, loosing according to key assignments then goes to corresponding key assignments processing subprogram.In the real-time clock program, when finishing, the accumulative total of minute, second, zero clearing, 24 hours circulation shows.In learning program, finish setting, switching of rated current etc.

Intelligent secure prevention circuit breakers of the present invention except that reset key S, is provided with 14 operating keys altogether, and the key functional definition is as follows:

The keyboard digital enter key of S1～S10:0～9

S11: learning program is set and changed over to the study sign

S12: INC (+) (assigned address content+1 is handled)

S13: DEC (-) (assigned address content-1 is handled)

S14: delete key (institute's content deletion is handled)

S: reset key (reinitialize and begin to carry out) from main program by this key program

S1～S10 is 0～9 digital input key, is used to import the address of 2 or 4 bit data unit, then, is made amendment by (+) INC, (-) DEC or sets, or handled by (Del) delete key.Wherein, import 2 figure places and be used for revising or the set-up function parameter, be defined as follows:

DB: menu numerical value

01, holiday, the tag addresses pointer sent setup unit;

02, holiday, the range address pointer sent setup unit;

03, study tag addresses pointer send setup unit;

04, clock (time) address pointer send setup unit;

05, clock (branch) address pointer send setup unit;

06, clock (second) address pointer send setup unit;

07, range number (hop count) address pointer send setup unit;

08, range number (segment number) address pointer send setup unit;

09, first section range address pointer send setup unit;

10, clock value send display register;

11, segment number and rated current are sent display register;

12, pre-alarm value address pointer send setup unit;

13, the instantaneous value address pointer send setup unit;

14, detection value address pointer send setup unit;

15, electromagnetic surveying value address pointer send setup unit;

16, the electrical leakage address pointer send setup unit;

17, the ground value address pointer send setup unit;

18, the magnitude of voltage address pointer send setup unit;

19, AN.0 road divisor coefficient address pointer send setup unit;

20, AN.1 road divisor coefficient address pointer send setup unit;

21, AN.2 road divisor coefficient address pointer send setup unit;

22, AN.3 road divisor coefficient address pointer send setup unit;

23, AN.4 road divisor coefficient address pointer send setup unit;

24, AN.5 road divisor coefficient address pointer send setup unit;

25, AN.6 road divisor coefficient address pointer send setup unit;

26, AN.7 road divisor coefficient address pointer send setup unit;

27, long delay current settings address pointer send setup unit:

28, long delay time set address pointer send setup unit;

29, the long delay pick-up current is set address pointer and is sent setup unit;

30, short time delay current settings address pointer send setup unit;

31, short time delay time set address pointer send setup unit;

32, the short time delay pick-up current is set address pointer and is sent setup unit.

Import 4 figure places and be used for setting or revising rated current or time parameter, definition is as follows respectively:

DB: " rated current " odometer numerical value

1000～1999,000～999 section range address pointer send setup unit;

DB: " time " control table numerical value

2000～2999,000～999 section time control address pointer send setup unit;

DB: " branch " control table numerical value

3000～3999,000～999 section branch control address pointer send setup unit.

Address setting: address pointer is provided with the numerical key counter in main program, to use in the donating bond handling procedure.The key handling procedure adds 1 after reading key assignments, and the figure place of determination number keyboard (address pointer) then, leaves it in corresponding kilobit (the first high byte), hundred (the first low byte), ten (inferior position high byte), individual position (inferior position low byte).If the numerical key number of times of input is not equal to 4; Then time-delay is waited for and is continued input digit, after the time-delay, if the numerical key number of times of input equals 2, then enters the function key address search and handles.If the numerical key number of times of input equals 4, then finish input digit, send setup unit with the address pointer of importing, enter rated current or address search processing switching time.Send setup unit with the address of input after the retrieval process, then, set, revise by (+) INC or (-) DEC again, if mistake appears in input, can after modification is finished, both carry out the numeral of next unit by other key and set or the function modification with the deletion of (Del) key.Dispose the quantity that keyboard can reduce key with the method, obtain the address of the more content revised.

In order to reduce the quantity of operating key, improve keyboard efficient, the Keyboard Control mode that the present invention adopts numerical key to mix with function key, this has increased some complexity coefficients to use, but consider the learning functionality of intelligent secure prevention circuit breakers excellence, its rated current, rated current generally must manual keyboard not set switching time, and keyboard has only provided the usefulness as artificial setting and modification.

The section range value of rated current, the section control time of rated current (time) value, section control time (branch) value of rated current is all reserved by 1000 memory cell.Can set the more rated current of multistage if desired, but consider that 24 hours 1000 rated current can satisfy most of users' demand, and reserve many more, committed memory is big more, the resource that may waste is many more.

The S11 key, will be learnt sign and put 1 by behind this key for study sign setting key, change the learning program operation then over to.S12 is an INC (+), by behind this key, content+1 of assigned address is handled, and pins this key and can handle continuous+1.S13 is a DEC (-), by behind this key, the content-1 of assigned address is handled, and pinning this key can continuous-1 processing.S14: delete key, by behind this key, the content of assigned address is done deletion handle.S is a reset key, by behind this key, makes system begin to carry out from main program again, and reinitializes.

The protection of overload long delay calculates the delay time under the different electric currents by formula LTD=t (S) * [2Ir/ (C-1.25Ir)] in executive program, in the formula: t is 2 times of delay times of setting under the rated current (2Ir), and unit is second (S); C is a current measurement value; The rated current of Ir for setting; 1.25Ir be the pick-up current that the protection of overload long delay is set, 1.25 times of Ir are got in the long delay that generally transships protection.

The short circuit short time delay is protected in executive program by formula S TD=t (S) * [15Ir/ (C-1.5Ir) calculates the delay time under the different electric currents, and in the formula: t is 15 times of delay times of setting under the rated current (15Ir), and unit is second (S); C is a current measurement value; The rated current of Ir for setting; 15Ir is the pick-up current that the protection of short circuit short time delay is set, and 1.5 times of Ir are got in general short time delay protection.Consider that the parameters of holiday and the parameter of Mon-Fri may be not quite similar, thus sign holiday in program, be provided with, so that in executive program, change range parameter holiday over to according to sign.

Fig. 3 main program flow chart execution in step of intelligent secure prevention circuit breakers is as follows: after the initial step 100, and execution in step 101: initialization register, data field, A/D ALT-CH alternate channel, I/O port.Then, execution in step 102: putting A mouth AN.0～AN.7 is the A/D input, putting first road A/D passage is AN.0, put B mouth RB.4～RB.7 and be input, put RB.0～RB.3 and be output, then, execution in step 103: put rated current counter and A/D channel counter initial value, execution in step 104 again: establish timer 1 and be asynchronous timing working, putting timer 1 regularly interrupts for 5ms, then, execution in step 105: put and regularly interrupt allowing, execution in step 106 again: the open interruption, and execution in step 107 then, does inquiry keyboard have key to press not? if have, execution in step 108, remove the button sign, execution in step 109 again, is the judgement key assignments effectively denied? if effectively, then execution in step 110, preserve key assignments, if execution in step 107, no key is pressed, or execution in step 109, key assignments is invalid, does then skipping to step 111 carries out: inquiry A/D convert not? if finish, execution in step 112 is got the A/D channel number, preserve the A/D transformation result, execution in step 113 again: the A/D result address is added 1, execution in step 114 again, transfer update displayed, then, turn back to step 104 and carry out.If the A/D conversion is not intact, then skip to execution in step 104, replacement timer 1 is asynchronous timing working, 5ms regularly interrupts, and regularly interrupts allowing, and reopens regularly and interrupts.

The interrupt service routine execution in step of Fig. 4 is: after the initial step 200; execution in step 201: keep the scene intact; then; is execution in step 202: close and interrupt, execution in step 203 again: inquiry regularly to interrupt? if not regularly interrupting execution in step 216: clear interrupt identification; then; jump directly to step 218: open regularly and interrupt, execution in step 219 again, interrupt returning.If regularly interrupt; execution in step 204: put 30ms (millisecond) time-delay; does execution in step 205 again: inquiry 30ms delay time not? if delaying time, arrives 30ms; execution in step 206: transfer the keyboard scan program, then, execution in step 207: put time-delay in 1 second; execution in step 208 again: inquire about and delayed time in 1 second not? if delayed time and arrive in 1 second; execution in step 209: timing clock program, execution in step 210 again: transfer the A/D conversion program, then; does execution in step 211: the query learning sign equal 1 not? if be not equal to 1; execution in step 212: timing clock processing procedure preface, execution in step 213 again: transfer protection dropout program, execution in step 214 then; transfer update displayed; then, execution in step 217 again: recover on-the-spot, execution in step 218 again; reopen regularly and interrupt; then, execution in step 219 interrupts returning.If the 30ms time-delay is not arrived, then skip to step 208, inquire about and delayed time in 1 second not? if time-delay in 1 second is not arrived, then skip to step 214 and carry out, transfer update displayed, until step 219, interrupt returning.If execution in step 211 query learning signs equal 1, then skip to step 215 and carry out, transfer learning program, and then order execution in step 217, until step 219, interrupt returning.

The real-time clock program execution in step of Fig. 5 is as follows: after the initial step 300, execution in step 301: get a second signal, second the counting add 1, does execution in step 302 then: a test second counting equal 60 not? if a second counting is not equal to 60, then execution in step 308: transfer update displayed, execution in step 309 again: return.Does if a second counting equals 60, then execution in step 303: counting zero clearing second, branch counting add 1, and execution in step 304 then: test branch counting equals 60 deny? if divide counting to be not equal to 60, then execution in step 308: transfer update displayed, execution in step 309 again: return.If divide counting to equal 60, then execution in step 305: divide the counting zero clearing, the time counting add 1, execution in step 306 then: counting equals 24 not during test? if time counting is not equal to 24, then execution in step 308: transfer update displayed, execution in step 309 again: return.If time counting equals 24, then execution in step 307: the time counting zero clearing, execution in step 308 then: transfer update displayed, execution in step 309 again: return.

The keyboard scan program of Fig. 6 is as follows: after the initial step 400; execution in step 401: keep the scene intact; execution in step 402 again: close demonstration (put port RA.0～RA.5 and be output as 0); execution in step 403 then: put the key scanning initial value; if port RB.0～RB.3 is scan code output; RB.4～RB.7 is that scan code is imported (as shown in Figure 2; constitute the matrix keyboard scanning circuit); then; has execution in step 404: since the first row keyboard scan, execution in step 405 again: feeler switch scanned not? if not intact, then execution in step 406: time-delay is waited for; continuing feeler switch scanning finishes not; does if been scanned, then execution in step 407: test have key to press not? do not press if there is key, then execution in step 408: put no key and fall to indicating; then; skip to step 414: recover on-the-spot, execution in step 415 again, return.Is if there is key to press, then execution in step 408: test key order before this finished not? if do not finish, then skip to step 414: recover on-the-spot, execution in step 415 again, return.If key order is before this finished, then execution in step 410: table look-up and ask key assignments, then execution in step 411,, preserve key assignments, execution in step 412 again, put key and fall to indicating, then, execution in step 413: transfer the diffusing jump to subroutine of key assignments, change corresponding key function treatment program, execution in step 414 then, recover on-the-spot, execution in step 415 again, return.

The dropout defence program step of Fig. 7 is as follows: after the initial step 500; execution in step 501: get temperature; electromagnetism; electric leakage; ground connection; overvoltage signal and measured value C are (if current sensor is every each one mutually; the mean value of then getting three current sensors is measured value C); get temperature; electromagnetism; electric leakage; ground connection; overvoltage set point and section load current value Ir; execution in step 502 again: probe temperature; electromagnetism; electric leakage; ground connection; is not any one measured value of overvoltage greater than set point separately? if be not more than set point separately; execution in step 503: is not thermometrically value C greater than the instantaneous trip current setting value? if greater than the instantaneous trip current setting value; execution in step 516: putting one-chip machine port RC.2 is 1; start warning circuit and send sound and light alarm; execution in step 517 then; preserve measured value C; execution in step 518 again: putting port RC.3 is 1; the circuit breaker tripping protection; execution in step 519 then: transfer update displayed, execution in step 520 again: return.

If execution in step 502: probe temperature, electromagnetism, electric leakage, ground connection, any one measured value of overvoltage are greater than its corresponding set point; then execution in step 518: putting port RC.3 is 1; the circuit breaker tripping protection, execution in step 519 then: transfer update displayed, execution in step 520 again: return.

If execution in step 503: measured value C is not more than the instantaneous trip current setting value, execution in step 504: is not thermometrically value C greater than short time delay drop-away current set point? if greater than short time delay drop-away current set point (being called for short short drop-away current), execution in step 513: get the delay time set point and the short time delay pick-up current set point of measured value C, short time delay drop-away current set point and this electric current, execution in step 514 then: calculate STD short time delay time and time-delay.Execution in step 515: is not thermometrically value C greater than short time delay drop-away current set point again after the time-delay? if greater than short time delay drop-away current set point, then skip to step 516 and carry out, until step 520, return.

If execution in step 504 or step 515, test result all is not more than short time delay drop-away current set point, then execution in step 505, is not thermometrically value C greater than long delay drop-away current (being called for short long drop-away current) set point? if measured value C is greater than long delay drop-away current set point (being called for short long drop-away current), execution in step 506: get measured value C, the delay time set point and the long delay pick-up current set point of long delay drop-away current set point and this electric current, execution in step 507 then: the time and the time-delay of calculating the LTD long delay, then, execution in step 508 again, is not thermometrically value C greater than long delay drop-away current set point? if measured value C is greater than long delay drop-away current set point, then skipping to step 516 carries out, until execution in step 520, return.

If execution in step 505 or step 508, test result all is not more than long delay drop-away current set point, and then execution in step 509: get the pre-alarm value, then, execution in step 510, is not measuring current measured value C greater than the pre-alarm value? if greater than the pre-alarm value, then execution in step 512: putting port RC.2 is 1, starts prealarm circuit and sends the sound and light alarm signal, execution in step 519 then, transfer update displayed, step 520 is returned again.If execution in step 510, thermometrically value C is not more than the pre-alarm value, execution in step 511: preserve measured value C, execution in step 519 then: transfer update displayed, execution in step 520 again, return.

The clock control program step of Fig. 8 is as follows: after the initial step 350, execution in step 351: the section counting (being called for short the rated value counting) of getting load current value, clock value, the segment number value, section load current value and section clock control value, does execution in step 352 again: test sign holiday equal 1 not? if be not equal to 1, execution in step 353: get load current value, clock value, is execution in step 354 again: the score value that test divides counting to equal next section clock denied? if divide counting to equal the score value of next section clock, execution in step 355: count the duration that equals next section clock during test and deny? if time counting equals the duration of next section clock, then execution in step 356: take off one section load current value, execution in step 357 again, switching rated current is the present segment load current value, does execution in step 358 then: the section counting of test load current value equal 0 not? if the section counting of rated current is not equal to 0, execution in step 359: rated current range counting subtracts 1, rated current range address adds 1, segment number adds 1, clock control value address adds 1, execution in step 362 then, current load current value send and shows slow, execution in step 363 again, transfer update displayed, then, execution in step 364 is returned.If test sign holiday equals 1, skip to step 361 and carry out: get range holiday, skip to step 362 then and carry out, return until execution in step 364.

If execution in step 358, test rated current section counting equals 0, then skipping to step 360 carries out: the section counting of replacement rated current, get that rated current is deposited first location, getting the clock control value, to deposit first location, segment number clear 0, skip to step 362 then and carry out, until returning.

If execution in step 354; The score value that divides counting to be not equal to next section clock, or execution in step 355; Time counting is not equal to the duration of next section clock, all jumps directly to step 362, and current load current value send and shows slow, and execution in step 363 again, transfer update displayed, and then, execution in step 364 is returned.

After the A/D conversion program initial step 700 of Fig. 9; execution in step 701; keep the scene intact; execution in step 702 again; close and show; execution in step 703 then: get the A/D channel number; does start the A/D conversion, execution in step 704 then: inquiry A/D convert not? if not intact then inquiry is waited for, if A/D converts; execution in step 705: get the A/D transformation result; put A/D EOC sign; execution in step 706 again: get binary number; the decimal number storage address, execution in step 707 then: get divisor, execution in step 708 again; division arithmetic; execution in step 709 then, transfer the code system conversion routine, and execution in step 710 again: deposit merchant and decimal number.Then, does execution in step 711: test A/D channel counts equal 0 not? if equal 0, execution in step 712: to put channel number be AN.0, put the first location of binary number, put the first location of decimal number, put the first location of divisor, and execution in step 713 then: recover on-the-spot, execution in step 715 again, return.

If execution in step 711: test A/D channel counts is not equal to 0, and then execution in step 714:A/D channel counts subtracts 1, and channel number adds 1, binary number address, decimal number address and divisor address add 1, skipping to step 713 then carries out: recover on-the-spot, execution in step 715 again, return.

Figure 10 two to decimal number conversion routine initial step 720, execution in step 721: put the binary digit counting number, then, execution in step 722; Work register clear 0, execution in step 723 again: binary number moves to left one to the binary-coded decimal storage unit, does execution in step 724 then: test binary digit counting subtract 1 and equals 0 not? if the binary digit counting is not equal to 0, execution in step 726: adjust the BCD decimal number, execution in step 727 again, deposit and adjust the back result to storage unit, then, jumping back to step 723 carries out, binary number moves to left one to the binary-coded decimal storage unit, if test binary digit counting subtracts 1 and equals 0, then execution in step 725: return.

The update displayed program of Figure 11, after the initial step 800, execution in step 801; keep the scene intact, execution in step 802 again, close to show; execution in step 803 then, and the AN.0～AN.3 that puts B mouth and A mouth is output, put to show first address and figure place showing counting; then; execution in step 804: clear display register and deposit data unit, execution in step 805 then, get the position, end of video data; execution in step 806 again, table look-up and ask font code to send the B mouth to show.Execution in step 807 then, character moves to left one, the position counting subtracts 1, execution in step 808 then: display delayed, does execution in step 809 again: test position counting equal 5 not? if the position counting equals 5, execution in step 810: fetch data the 5th, then, turn back to step 806 and carry out: table look-up and ask font code to send the B mouth to show.Does if the position counting is not equal to 5, execution in step 811: test position counting equal 4 not? if position counting equals 4, execution in step 812: fetch data the 4th, return step 806 then and carry out, table look-up and ask font code to send the B mouth to show.If the position counting is not equal to 4, then execution in step 813, does test position counting equal 3 not? if position counting equals 3, then execution in step 814: fetch data the 3rd, and return step 806 then and carry out, table look-up and ask font code to send the B mouth to show.If the position counting is not equal to 3, then execution in step 815, does test position counting equal 2 not? if position counting equals 2, then execution in step 816: fetch data the 2nd, and return step 806 then and carry out, table look-up and ask font code to send the B mouth to show.If execution in step 815, test position counting is not equal to 2, and then execution in step 817, does test position counting equal 0 not? if the position counting is not equal to 0, execution in step 818 is fetched data the 1st, returns step 806 then and carries out, and tables look-up and asks font code to send the B mouth to show.If the position counting equals 0, execution in step 819: recover on-the-spot, execution in step 820 then, return.

Figure 12 learning program execution in step: after the initial step 600; execution in step 601: keep the scene intact; execution in step 602 then: get load current value and deposit first location; get the clock setting value and deposit first location; get rated current range counter; then; execution in step 603: get initial clock value; initial current value and measured value C; the permissible variation value; does execution in step 604 then: thermometrically value C add deviate not greater than initial value? if being not more than initial value, measured value C adds deviate; does execution in step 605: thermometrically value C deduct deviate not less than initial value? measured value C deducts deviate less than initial value; execution in step 606: preserving current measured value C is set point; preserve present clock for setting clock value; then; execution in step 607; does the test present clock equal initial clock not? if present clock is not equal to initial clock; execution in step 608: rated current counting+1; measured value address+1; clock value address+1; execution in step 609 then, return.

Execution in step 604: if measured value C adds deviate greater than initial value, skip to step 606 and carry out, if execution in step 605: measured value C is not less than initial value and deducts deviate, and skip to step 607 and carry out,

If execution in step 607: present clock equals initial clock, then execution in step 610: preserve rolling counters forward, preserve measured value C, preserve clock value, execution in step 611 again: study finishes, removes the study sign, execution in step 612 then: recover on-the-spot, execution in step 613 again, change running status over to.

The execution in step of the diffusing carryover preface of Figure 13 key assignments analysis: after the initial step 400, execution in step 401 is got key assignments, numerical key count value, and execution in step 402 then; Is the test key assignments that command key is denied? is if command key, then execution in step 403: the test key assignments that learning key denys? if learning key, execution in step 404: put study sign, the habit of transfeing to another school program, jump to step 440 then; Finish.Is if execution in step 403, the test key assignments is not a learning key, and then execution in step 405: the test key assignments that INC is denied? if INC, then execution in step 406, transfer the INC subprogram, skip to step 440 then; Finish.If the test key assignments is not an INC, then execution in step 407, is the test key assignments that DEC is denied? if DEC, execution in step 408 is transferred the DEC subprogram, skips to step 440 then; Finish.If the test key assignments is not a DEC, then execution in step 409, is the test key assignments that delete key is denied? if delete key, then execution in step 410, transfer the delete key subprogram, skip to step 440 then;

If execution in step 402, the test key assignments is not a command key, and then execution in step 411: is not test count=0? if counting=0, execution in step 422; Data are deposited the position, end, and execution in step 423 again: counting+1 skips to step 421 then: transfer update displayed, execution in step 440 again, finish.If execution in step 411 test counts are not equal to 0, execution in step 412: is not test count=1? if counting=1, execution in step 424; Poke is worth the 5th, and execution in step 425 again: counting+1 skips to step 421 then: transfer update displayed, execution in step 440 again, finish.If execution in step 412 test counts are not equal to 1, execution in step 413: are test count=2 not? if counting=2, execution in step 426; Poke is worth the 4th, and execution in step 427 again: counting+1 skips to step 421 then: transfer update displayed, execution in step 440 again, finish.If step 413, test count is not equal to 2, and then execution in step 414; Are test count=3 not? if counting=3, execution in step 428; Poke is worth the 3rd, and execution in step 429 again: count clearly 0, jump to step 421 then: transfer update displayed, execution in step 440 again, finish.If execution in step 414; Test count is not equal to 3, then execution in step 415: transfer time-delay, then, is execution in step 416 again: it that 2 figure places deny that test deposits numeral in? if 2 figure places, execution in step 430: put the function sign in the 1st, 2, then, execution in step 431: the conditioning function table processing subprogram of tabling look-up, jump to step 421 then: transfer update displayed, execution in step 440 again, finish.

If execution in step 416, test is not 2 figure places, then execution in step 417, is it that 4 figure places deny that test deposits numeral in? if not 4 figure places, execution in step 432: null character (NUL) is sent flag bit, and execution in step 433 again: data are clear 0, counting is clear 0, jump to step 421 then: transfer update displayed, execution in step 440 again, finish.If it is 4 figure places that test deposits numeral in, is not execution in step 418: testing the 3rd 1 not? if the 3rd is 1, execution in step 434: put the rated current sign, execution in step 435 again: transfer the rated current table processing subprogram of tabling look-up, skip to step 421 then: transfer update displayed, execution in step 440 again, finish.Is not if the 3rd is not 1, execution in step 419: testing the 3rd 2 not? if the 3rd is 2, execution in step 436: put a hour controlled flag, execution in step 437 again: the control table processing subprogram of tabling look-up when turning down, jump to step 421 then: transfer update displayed, execution in step 440 again, finish.Is not if the 3rd is not 2, execution in step 420: testing the 3rd 3 not? if the 3rd is 3, execution in step 438: put a minute controlled flag, execution in step 439 again: transfer minute control table processing subprogram of tabling look-up, skip to step 421 then: transfer update displayed, execution in step 440 again, finish.

If execution in step 420, testing the 3rd is not 3, execution in step 421: transfer update displayed, execution in step 440 again, finish.

After the initial inlet 450 of the function treatment subprogram of Figure 14, execution in step 451: get the key entry data, then, execution in step 452: the first address of getting menu, execution in step 453 then: calculate the function corresponding address, execution in step 454 again: send adjustment unit and display buffer respectively with address contents, then, execution in step 455 is returned.

The rated current range of Figure 15 is handled after the initial inlet 460 of subprogram, execution in step 461: get the key entry data, then, execution in step 462: the first address of getting the rated current odometer, execution in step 463 then: calculate corresponding rated current range address, execution in step 464 again: send adjustment unit and display buffer respectively with address contents, then, execution in step 465 is returned.

After the initial inlet 470 of hour control and treatment subprogram of Figure 16, execution in step 471: get the key entry data, then, execution in step 472: the first address of getting hour control table, execution in step 473 then: calculate corresponding hour control address, execution in step 474 again: send adjustment unit and display buffer respectively with address contents, then, execution in step 475 is returned.

After the initial inlet 480 of minute control and treatment subprogram of Figure 17, execution in step 481: get the key entry data, then, execution in step 482: the first address of getting minute control table, execution in step 483 then: calculate corresponding minute control address, execution in step 484 again: send adjustment unit and display buffer respectively with address contents, then, execution in step 485 is returned.

After the initial inlet 620 of the INC subprogram of Figure 18, execution in step 621: get the address of being transferred content, execution in step 622 again: the content of address location+1, execution in step 623 then: data are sent the display buffer, execution in step 624 again: transfer the update displayed program, execution in step 625 then: the time-delay wait, then, execution in step 626 is returned.

After the initial inlet 630 of the DEC subprogram of Figure 19, execution in step 631: get the address of being transferred content, execution in step 632 again: the content of address location-1, execution in step 633 then: data are sent the display buffer, execution in step 634 again: transfer the update displayed program, execution in step 635 then: the time-delay wait, then, execution in step 636 is returned.

After the initial inlet 640 of the delete key subprogram of Figure 20, execution in step 641: get the address of being transferred content, execution in step 642 again: the content of address location clear 0, execution in step 643 then: the content of address location is sent the display buffer, execution in step 644 again, transfer the update displayed program, then, execution in step 646 is returned.

Get (0～9) 10 numeric keys and (Study) learning key, (+) INC, (-) DEC, (Del) delete key constitute keyboard, 10 numeric keys is used for Input Address numerical value, so that set the content of this address by function key.(Study) learning key is used for setting the study sign and changes learning program over to.(+) INC, (-) DEC and (Del) delete key be respectively applied for and set or the content of deletion assigned address.

The keyboard of intelligent secure prevention circuit breakers is mainly used in and changes learning program over to and artificial setting, modification operational factor are provided, and generally moves a learning program and both can finish parameter setting, and change working procedure automatically over to, and is easy and simple to handle.

In order to reduce the quantity of operating key, improve keyboard efficient, though can giving to use, the Keyboard Control mode that adopts numerical key to mix with function key increases some complexity coefficients, but because the learning functionality of intelligent secure prevention circuit breakers excellence, its rated current and switching time generally must manually not set, and keyboard has only provided the usefulness as artificial setting and modification.

As circuit breaker; his protection disjunction function is crucial; therefore; its load current value of intelligent secure prevention circuit breakers of the present invention is to follow the tracks of setting according to user's actual loading; thereby protective value is greatly improved; better reliability; practicality is stronger; temperature fire protection in addition; the protection of electromagnetism spark detection; earth leakage protective; ground protection; overvoltage protection and sound and light of alarm; can provide the most comprehensive protection to various electric disaster hidden-troubles; also can be by PORT COM and other electrical equipment or PLC; the DCS computer control system connects, and forms the network type control system.

The electronic control system of intelligent secure prevention circuit breakers of the present invention (5) can be made modular structure, is convenient to be transplanted on other circuit breakers.

Claims (8)

1. intelligent secure prevention circuit breakers; mainly by fixed contact assembly (1); moving contact component (2); tripping mechanism (3); release electromagnet M1; current sensor; temperature detecting sensor; electricity leakage sensor; grounding sensor; detect and electronic control system compositions such as (5) with overvoltage; intelligent secure prevention circuit breakers removes has the long delay protection; the short time delay protection; outside the basic defencive function of instantaneous protection; also has the protection of temperature detection of fires; the protection of electromagnetism spark detection; earth leakage protective; ground protection; overvoltage protection; show and the pre-alarm device; the PORT COM and the field-bus interface that are connected or carry out the network connection with other external equipments are arranged, it is characterized in that:

The electronic control system of a, described intelligent secure prevention circuit breakers (5) is mainly become by single-chip microcomputer or bank of digital signal processors, also can form by other computer, electronic control system (5) has at least a real-time clock that study and programme controlled clock signal are provided, have the signal source of a current sensor at least as data acquisition, when adopting a plurality of current sensor, a plurality of results of its collection can sue for peace earlier, the back is average, and on average the result after is as measured value signal; Be useful on input and the signal conditioning circuit of handling, the output driving circuit that drives warning device and tripping mechanism is arranged, signals collecting, computing, processing unit are arranged, have at least a memory storage or memory to be used for store data and deposit executive program, have control to set keyboard and other servicing units;

B, intelligent secure prevention circuit breakers has the learning functionality of wisdom, time storage when its learning functionality is mainly changed load current under learning state by corresponding software programs in the memory of electronic control system (5) and to the load current storage formation of this time, after learning program finishes, with time of each time period of preserving and corresponding load current time set value and corresponding rated current basic value as each time period, the single-chip microcomputer of electronic control system (5) or other computer are by the current storage of its microprocessor (MCU) access time memory cell and this period, and will visit the result through after the calculation process as the switching time and the rated current set point of intelligent secure prevention circuit breakers running status, thereby make intelligent secure prevention circuit breakers switch to corresponding best rated current state by the time automatically, realization need not manually be provided with and the multi-period rated current parameter of automatic setting intelligent secure prevention circuit breakers; The real-time clock of intelligent secure prevention circuit breakers can be made of computer software programs, also can be made of hardware circuit, perhaps is made of other clock generating devices.

2. intelligent secure prevention circuit breakers as claimed in claim 1, its feature also is: have the signal source of an electromagnetism spark transducing signal as data acquisition at least, this transducing signal can be obtained from electricity leakage sensor, grounding sensor or current sensor, the electromagnetism spark signal be intelligent secure prevention circuit breakers lower load equipment and with electric line because the spark signal that loose contact or defective insulation produce, this signal can be continued to use electric line or spatial transmission with electromagnetic wave mode, way of electromagnetic induction.

3. intelligent secure prevention circuit breakers as claimed in claim 2, its feature also is: after picking up electromagnetism spark transducing signal, amplitude shaping through the small-signal excision is amplified, pass through peak detector detection, filtering again, filtered signal can directly output on the A/D converter of data acquisition and change, and can carry out digital processing by microprocessor then.

4. as intelligent secure prevention circuit breakers as described in the claim 1, its feature also is: have at least one group to switch the switching mechanism of circuit breaker rated current according to the control signal of working procedure, and this switching mechanism can be made of computer software, hardware or other devices.

5. as intelligent secure prevention circuit breakers as described in the claim 1, its feature also is: being used for memory storage gathers the current signal of each transformation period section of current sensor and the mnemonic or the memory storage of time corresponding signal and other transducing signals, can be read-write computer-internal memory, external memory storage or other memory storage.

6. as intelligent secure prevention circuit breakers as described in the claim 1, its feature also is: have computing, a processing unit that reads or reproduce mnemonic or memory storage inner storag information at least, this device can be the microprocessor, digital signal processor of computer-internal or other have read, the formation of computing, disposal ability.

7. intelligent secure prevention circuit breakers as claimed in claim 1, it is characterized in that: after collection, memory storage instruction are finished, can change or manually set instruction step or the working procedure that reads the mnemonic inner storag information automatically over to, after reading the information of mnemonic stored, handle both as the rated current of this time period through mathematical operation, the learning functionality of intelligent secure prevention circuit breakers and the inventive principle of switching control function are applicable on the various circuit breakers such as primary cut-out, medium voltage breaker, low-voltage circuit breaker and vacuum circuit-breaker to be implemented again.

8. as claim 1,2,3,4,5,6,7 described intelligent secure prevention circuit breakers, its feature also is: the electronic control circuit of intelligent secure prevention circuit breakers and inventive principle are equally applicable to make independently electronic installation or electronic control module, and this electronic installation or electronic control module can substitute the electronic control circuit of various circuit breakers on the present market.

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