CN201252470Y

CN201252470Y - Multifunctional power supply controller

Info

Publication number: CN201252470Y
Application number: CNU2008200154349U
Authority: CN
Inventors: ***; 李红玲; 陈宁; 王家石; 蒋宾
Original assignee: FUSHUN WLLP ELECTRIC-MECHANIC EQUIPMENT Co Ltd
Current assignee: FUSHUN WLLP ELECTRIC-MECHANIC EQUIPMENT Co Ltd
Priority date: 2008-09-02
Filing date: 2008-09-02
Publication date: 2009-06-03
Anticipated expiration: 2018-09-02

Abstract

The utility model discloses a multifunctional power supply controller, which adopts a microcontroller as a CPU. The microcontroller is connected with a synchronous signal collection circuit, a trigger drive circuit, a digital quantity input circuit, an A/D change-over circuit, a button input and LCD circuit, a frequency modulation circuit and a power supply filter circuit, thus constituting an integrated computer system. The work is completed under the control of programs. The multifunctional power supply controller uses the microcontroller as a main control unit, and constitutes the multifunctional power supply controller to control power supplies accurately with perfect functions and friendly man-machine interfaces together with proper peripheral circuits; the functions include three-way relay output, three-way read analog input, four-way digital quantity input and six-way controllable silicon triggering signal. The multifunctional power supply controller is integrated with parameter setting buttons, a Chinese LCD, an AD change-over circuit and an RS232 serial communication circuit. All of parts are controlled by programs, and are matched with each other to meet the control requirements. The multifunctional power supply controller is a highly integrated intelligent multifunctional controller.

Description

Multifunctional electric power controller

One, technical field

The utility model relates to realizes the device of control automatically to three-phase mains voltage.

Two, background technology

In a lot of equipment, can directly not use three phase mains, all need it is carried out conversion, comprise DC equipment, starting device etc.Conventional method adopts analog circuit and special-purpose controllable silicon to trigger integrated circuit three phase mains is controlled, but control mode is single, the control very flexible, and automatic control at the bottom of the control precision, can't be realized in the unmanned aerial vehicle (UAV) control interface.Press for a kind of more advanced, more intelligentized mode and control three-phase power supply system.Microcontroller appear as the scheme that provides desirable that addresses the above problem.Microcontroller is integrated functions such as CPU, ROM, RAM, EEPROM, I/O interface, timer/counter, interrupt system on a block semiconductor, constituted the complete computer system of a cover, its work is controlled by written program fully, rich interface, extensibility is strong, fast operation, per second can be done more than one hundred million times; The timing accuracy height can be accurate to μ s level.Can reach intellectuality to control circuit, multifunction, the needs of high precision int and automation with it fully as master controller.Microcontroller is widely used on the plurality of devices such as DC speed regulation, AC voltage adjusting, energy-conservation soft initiator, noncontacting switch.

Three, summary of the invention

The purpose of this utility model provides a kind of intelligentized multifunctional electric power controller, overcomes the shortcoming of prior art, multiple functions such as the accurate control of realization power supply and man-machine interface.

The technical solution adopted in the utility model is: multifunctional electric power controller comprises central processing unit, interface, A/D change-over circuit and input/output circuitry, the utility model adopts microcontroller (MCU) as central processing unit, connect synchronous signal acquisition circuit, triggering drive circuit, digital quantity input circuit, A/D change-over circuit, button input circuit and liquid crystal display circuit and frequency modulation circuit, electric source filter circuit, constitute complete computer system, finish the work by written program control.

The utility model with microcontroller as main control unit, cooperate suitable peripheral circuit form control accurately, perfect in shape and function, man-machine interface close friend's multifunctional electric power controller, comprising the output of No. three relays, the input of three tunnel analog quantitys, the input of four road digital quantities, six road silicon controlled trigger signals and trigger drive circuit and serial communication circuit, synchronous signal acquisition circuit.Realized that the control controllable silicon triggers and be equipped with logic control function, feedback and PID regulatory function, parameter setting and Presentation Function, serial communication function etc.Changed the voltage regulating mode that triangular wave that analog circuit in the past adopts cooperates with comparative voltage fully, and function singleness, the automaticity of the regulating circuit formed of employing application-specific integrated circuit (ASIC) low, can't realize deficiency such as human-computer dialogue.Integrated parameter is provided with button, Chinese liquid crystal display screen, A/D convertor circuit and RS232 serial communication circuit on the multifunctional electric power controller, all parts cooperatively interact by program control and reach the control requirement, be a Highgrade integration, multifunction, intelligentized controller.

Four, description of drawings

Fig. 1 is the synchronous signal acquisition circuit diagram;

Fig. 2 is the P1 port and the programmable logic device connecting circuit figure of microcontroller;

Fig. 3 triggers drive circuit figure for controllable silicon;

Fig. 4 is digital quantity input circuit figure;

Fig. 5 is relay output circuit figure;

Fig. 6 is A/D change-over circuit figure;

Fig. 7 is RS232 serial interface circuit figure;

Fig. 8 is button input and data display circuit figure;

Fig. 9 always schemes for circuit of the present utility model;

Figure 10 is a logic diagram of circuit of the present utility model.

Five, embodiment

The utility model is achieved by following technological means, among Fig. 1, at first three phase mains is carried out star-like resistor network dividing potential drop, three road signals that change synchronously with every phase voltage after the dividing potential drop are carried out the computing amplification to operational amplifier MAX324, export three the tunnel with the synchronizing signal of the synchronous square-wave signal of power supply as microcontroller and three phase mains, compare more direct with traditional employing synchrotrans, the situation that on phase place, does not have 30 ° of the hysteresis of transformer, MAX324 is operated in unlimited amplification region, the AC signal of positive and negative variation is become the discernible high-low level of microcontroller isolate by photoelectricity and deliver to microcontroller.

Operational amplifier input maximum voltage=220V * (R62 ÷ (R27+R28+R62)), it is the 50Hz square wave synchronous with power supply that three road operational amplifiers are output as waveform.

Synchronizing signal is isolated P3.5, P3.6, the P3.7 that delivers to microcontroller MCU by photoelectricity, microcontroller reads three tunnel synchronizing signals earlier during operation, one being that benchmark determines that phase sequence is positive phase sequence or negative phase sequence wherein, such as being that benchmark is compared effect with B mutually with A, as A when B is mutually for high level during by low uprising, be negative phase sequence, it during for low level positive phase sequence, phase sequence can be put corresponding marker bit after determining, microcontroller adopts the method for tabling look-up to control six silicon controlled conductings after can time-delay being set according to parameter afterwards.

The generation of six road silicon controlled trigger signals: at first the conversion of circuit by synchronous circuit becomes the frequency of three phase mains into the high-low level synchronous with power supply, isolating the back by photoelectricity reads for MCU, when external command requires to trigger controllable silicon, MCU at first reads synchronizing signal, and the phase sequence of judging three phase mains is A, B, C or A, C, B, MCU can take delay process according to the requirement of program and parameter setting then, the μ s of delay time=(65536-x) * 1, x is the microcontroller timer internal, and initial value is a numerical value between 0～65536.Because China's supply frequency is 50Hz, so the time of one-period is 20ms, a positive half period is 10ms, so the time of time-delay is that 0～10ms just can realize, supply voltage is from 0 stepless voltage regulation to maximum.This moment, microcontroller can be by P1 port output triggering signal, by the high-frequency signal of programmable logic device GAL-16V8D with broad pulse triggering signal and modulation signal generator, frequency is that 1KHz carries out hybrid modulation, MCU inside has three timers to be respectively T0, T1, T2, T0 uses as the conducting time-delay, delay time is that 0～10ms just can realize, supply voltage is from 0 stepless voltage regulation to maximum, T1 is the trigger impulse intervalometer, because what adopt is two trigger impulses, so one-period will produce 6 groups of trigger impulses, be 3.333333 (ms) blanking time of every group of trigger impulse, and T1 is that pulse spacing timing and numeration produce 6 groups of trigger impulses in proper order.Every group is triggered two controllable silicons, and the distribution of trigger impulse is finished by tabling look-up, every have on mutually positive and negative two controllable silicons respectively with+and-represent that owing to the difference of phase sequence has two kinds of tables, corresponding respectively phase sequence is A, B, C and A, two kinds of situations of C, B.Two tables are as follows:

Table 1

A+ phase trigger impulse=1st and the 2nd;

A-phase trigger impulse=4th and the 5th;

B+ phase trigger impulse=5th and the 6th;

B-phase trigger impulse=2nd and the 3rd;

C+ phase trigger impulse=3rd and the 4th;

C-phase trigger impulse=1st and the 6th;

Table 2

A+ phase trigger impulse=1st and the 2nd;

A-phase trigger impulse=4th and the 5th;

B+ phase trigger impulse=3rd and the 4th;

B-phase trigger impulse=6th and the 1st;

C+ phase trigger impulse=5th and the 6th;

C-phase trigger impulse=2nd and the 3rd;

Be toggled at every turn rare+,-two controllable silicon conductings, make circuit form path.

This moment, microcontroller can be by P1 port output triggering signal, deliver to the triggering drive part after the modulation by programmable logic device GAL-16V8D, GAL-16V8D inside can be configured by program, and Fig. 2 is that the P1 port of microcontroller MCU is connected with programmable logic device GAL-16V8D.

The control signal of microcontroller is after the processing of programmable logic device, control Driver Circuit produces triggering signal and triggers controllable silicon, realization is to the control of main circuit, the break-make of the modulation signal power controlling pipe TIP122 that GAL-16V8D produces, the output of Isolated Pulse Transformer is produced and the pulse of control signal identical triggering, TIP122 is middle pliotron, and its major function is power amplification; Isolated Pulse Transformer mainly acts on control circuit and main circuit is isolated, and diode plays shaping operation.Fig. 3 triggers drive circuit for controllable silicon.

By the digital quantity interface, can control and output state information system easily, four tunnel inputs and three tunnel outputs all can be passed through the program flexible configuration.The input of digital quantity among Fig. 4 by the external switch signal by capacitance-resistance filter after control photoelectricity isolate the output of IC, digital quantity signal is the passive switch amount, one end ground connection, the other end is isolated 2 of IC TLP521-4 by receiving photoelectricity by resistance after electric capacity and the resistor network filtering earlier, 4,6, on 8 pin, it is 1 years old, 3,5,7 pin connect+24V, when switch closure, make+24 form path to ground, the light-emitting component of IC inside is luminous to become electronegative potential to output by original high potential, after the P2.3～P2.6 of the output of microcontroller by being connected to TLP521-4 reads the state of TLP521-4, whether judge has switch to press and lift, and handles.The relay output of Fig. 5 also is to isolate by photoelectricity, the adhesive and the release of the high-low level control relay that produces by P2.0, the P2.1 of microcontroller, P2.2, as P2.0, P2.1, when P2.2 is high level, because TLP521-4 is input as equipotential, so output no-output, relay drives triode does not have drive signal, not conducting of triode, not adhesive of relay; When being low level, the input of TLP521-4 produces potential difference, has electric current to flow through, and makes the internal illumination element luminous, make output produce output and drive triode to make the relay adhesive, just can control external circuit by the contact that relay is guided on the terminal.

Information when circuit is gathered operation by three tunnel 10 bit synchronization AD, when reading in microcontroller for calculating by the P0 mouth, data call, Fig. 6 is the AD Acquisition Circuit, adopt 10 A/D conversion IC of three independent TLC1549 serials, front end adopts resistance-capacitance network filtering, the P0.4 of MCU is clock output, P0.5 is a sheet selected control system, when P0.5 is low level, MCU is from the 6 pin step-by-step reading of data of TLC1549 and deposit in the built-in variable, because so shared choosing of three TLC1549 and clock signal are three tunnel synchronous workings.

Fig. 7 is the RS232 interface circuit, the serial communication function is mainly finished by MAX232 dedicated serial communication IC, integrated RS232 serial communication interface is programmed, is communicated by letter control being used on the controller, adopt MAX232 dedicated serial communication IC to realize the conversion of Transistor-Transistor Logic level and 232 agreement level, the P3.0 of MCU and P3.1 serial communication interface can be realized the full duplex serial communication by MAX232.

Fig. 8 is button input and data display circuit figure, man-machine interface is made up of four buttons and a Chinese character LCD MODULE, to finish parameter setting and data message Presentation Function, button one end links to each other with P0.0, P0.1, P0.2, the P4.2 of MCU respectively, an other end ground connection.When button is pressed, the port of the MCU that links to each other is moved to low level by high level, produce input signal; Liquid crystal display is integrated 8 Chinese character LCD MODULE of 4 row, is operated under the serial mode, transmits data and order by specific drivers control to module, and MCU carries out transfer of data by 5 I/O mouths and module.

Each functional circuit of the present utility model is realized cooperation mutually by the I/O port of MCU, and calls each functional module work by the MCU unification.MCU is 8 high-performance microprocessors, integrated 36 two-way I/O ports, one road serial communication interface, but and the online updating internal processes, integrated 4K EEPROM, maximum clock frequency are 64M.Fig. 9 comprises that above-mentioned each functional block and modulating frequency produce the filter circuit of circuit, power supply input, forms with electrify restoration circuit and the clock circuit of MCU.Modulating frequency produces circuit mainly to be made up of NE555 IC and resistance capacitance, forms vibration by discharging and recharging of resistance and electric capacity, produces square wave by NE555 and uses for the programmable logic device modulation.Electric source filter circuit mainly adopts electrochemical capacitor to carry out voltage stabilizing, adopts ceramic disc capacitor to carry out filtering, and does the power supply indication by LED.Electrify restoration circuit is made up of 10K resistance R 51 and 10 microfarad capacitor C 11, and the MCU operation is delayed.Clock circuit is made up of crystal oscillator X1 and capacitor C 41, C42, for MCU provides work schedule.Board design adopts double sided board, and entire circuit is integrated on the PCB circuit board, and each interface is connected with outside by terminal, can be embedded in the miscellaneous equipment easily during use.

Director demon adopts the C language compilation, downloads to flexibility and reliability in the controller by serial ports, but the online updating program.Software is handled function, display () explicit function, myad () A/D analog data collection function and some intermediate treatment functions by main () principal function, run () operation function, xwxz () phase sequence choice function, key () load button and is formed, main () function scans each port status during running software, judged whether that order needs to handle, according to command parameter, call other power function and carry out the corresponding command then.

Claims

1, a kind of multifunctional electric power controller, comprise central processing unit, interface, A/D change-over circuit and input/output circuitry, it is characterized in that: it adopts microcontroller as central processing unit, connect the synchronous signal acquisition circuit, trigger drive circuit, digital quantity input circuit, relay output circuit, A/D change-over circuit, button input and liquid crystal display circuit and frequency modulation circuit and electric source filter circuit, constitute complete computer system.

2, multifunctional electric power controller according to claim 1, it is characterized in that: the synchronous signal acquisition circuit is that three phase mains is carried out star resistor network dividing potential drop, three road signals that change synchronously with every phase voltage after the dividing potential drop are carried out computing to operational amplifier amplify, export three the tunnel with the synchronizing signal of the synchronous square-wave signal of power supply as microcontroller and three phase mains; Three road square-wave signals are delivered to microcontroller through the photoelectricity isolation.

3, multifunctional electric power controller according to claim 1, it is characterized in that: the P1 port of microcontroller is sent out drive circuit by the programmable logic device contact, microcontroller P1 port output signal, deliver to the triggering drive circuit after the modulation by programmable logic device, control Driver Circuit produces triggering signal and triggers controllable silicon, realizes the control to main circuit.

4, multifunctional electric power controller according to claim 1, it is characterized in that: digital quantity input by the external switch signal by capacitance-resistance filter after control photoelectricity isolate the output of IC, microcontroller is isolated the P2.3～P2.6 of IC output and is read photoelectricity and isolate the state of IC and handle by being connected to photoelectricity.

5, multifunctional electric power controller according to claim 1, it is characterized in that: the relay output circuit also is to isolate by photoelectricity, the adhesive and the release of the high-low level control relay that produces by P2.0, the P2.1 of microcontroller, P2.2, P2.0, P2.1, P2.2 drive the adhesive of triode control relay by the output of high-low level control TLP521-4, and relay is controlled external circuit by the contact of guiding on the terminal.

6, multifunctional electric power controller according to claim 1, it is characterized in that: the information when the A/D change-over circuit is gathered operation by three tunnel synchronous AD, when reading in microcontroller for calculating by the P0 mouth, data call, adopt the serial a/d conversion IC, front end adopts resistance-capacitance network filtering, the P0.4 of microcontroller is clock output, P0.5 is a sheet selected control system, when P0.5 is low level, microcontroller is from 6 pin step-by-step reading of data of A/D conversion IC and deposit in the built-in variable, shared choosing of three A/D conversion IC and clock signal, three tunnel synchronous workings.

7, multifunctional electric power controller according to claim 1, it is characterized in that: the serial communication function is mainly finished by MAX232 dedicated serial communication IC, the integrated communication port of microcontroller is P3.0, P3.1, conversion by MAX232 converts Transistor-Transistor Logic level to 232 agreement level, realizes the full duplex serial communication.

8, multifunctional electric power controller according to claim 1, it is characterized in that: button input and liquid crystal display circuit, be made up of four buttons and a Chinese character LCD MODULE, button one end links to each other with P0.0, P0.1, P0.2, the P4.2 of microcontroller respectively, other end ground connection; Liquid crystal display is an integrated LCD MODULE, is operated under the serial mode, and microcontroller carries out transfer of data by 5 I/O mouths and LCD MODULE.