CN2210423Y - Computer digital displaying regulating arrangement - Google Patents

Abstract

The utility model relates to a microcomputer digital displaying regulating device, which comprises a sensor, a preposition unit, an arithmetic processing unit, a display unit, an input unit and an output control unit, wherein, the arithmetic processing unit comprises an SCM; the input unit is composed of four keys; the display unit comprises a plurality of LED numeral displays and a plurality of indicator lights. The microcomputer digital displaying regulating arrangement has advantages of simplicity, flexibility, easy realization, etc. The utility model can replace complicated information input system of traditional apparatus, can replace complicated mathematical operation circuit, time sequence control circuit and logic control circuit. Furthermore, the utility model simplifies hardware circuit and can change function through programming method, greatly raising performance and price ratio.

Description

Computer digital displaying regulating arrangement

The utility model relates to microcomputer or the application of singlechip technology in industrial automation instrument, more particularly, relates to the interface of a kind of microcomputer digital display regulator and keyboard thereof and display and microcomputer.

Particularly the function of single chip microcomputer chip is powerful day by day and price reduces day by day along with microprocessor chip, promote the industrial process input greatly and shown switch technology and combining that signal operation is handled, promoted the application of single-chip microcomputer in industrial automation instrument, microcomputer digital display regulator is exactly the application result of microcomputer technology in industrial automation instrument.

Microcomputer digital display regulator mainly comprises following components as shown in Figure 1: sensor, preposition unit, arithmetic element, display unit, input block, control output unit.Wherein, sensor is used for that the industrial process signal is become electricity signals such as (or resistance) and carries out conversion process to make things convenient for circuit; The mode of carrying out parameter input in input block has multiple, toggle switch for example, and dial switch, punched tape etc., but these modes need hardware more, realize very difficulty of complicated information input.Keyboard is more advanced input equipment, can easily realize complicated information input.Keyboard can be divided into encoded keyboard and encoded keyboard not.Closed key on the encoded keyboard needs hardware more, complex structure by hardware identification; The closed key on the encoded keyboard is not by software identification, and required hardware is less, and structure is also the simplest, and design makes things convenient for the scene to install and use in instrument easily.The parameter of display unit shows and existing adopts that 7 sections symbols are digital to be shown more, with the interface circuit of microcomputer two kinds of parallel port and serial ports arranged usually.Usually the interface chip of parallel port use is not very many, though to take more microcomputer I/O mouth line (ten), because of data line can be shared with other device, so actual take also not very many.Its major defect is to need dynamic refresh to show, needs the special purpose interface chip usually, otherwise that updating software takies the time of CPU is a lot; And the brightness that shows is relevant with refresh time; Need stronger circuit driving force; Generally speaking, the display number is many more, shows dark more; And the signal wire of interface many (equaling 8+ display number).The signal wire that serial port takies is generally three, uses two lines of MCS-51 serial port to add a control line more usually, and its advantage is that interface circuit is simple; Under the few situation of charactron, used device is few (each charactron is joined a SI PO shift register) also; Do not need dynamic refresh, the time that software takies CPU is few, does not need very strong circuit driving force; Display brightness is high and irrelevant with the display number; Major defect is under the many situations of charactron number, refreshes when showing and can see that display has tangible scintillation, so only be used in the less occasion of charactron usually.

The purpose of this utility model provides a kind of microcomputer digital display regulator, this microcomputer quantity governor couples together input signal, output signal and parameter input interface, parameter display interface and single chip microcomputer by the various interface circuit, utilize microcomputer that the parameter of input signal and keyboard input is carried out calculation process, parameter is shown, and control signal is transferred out by input interface.This microcomputer digital display regulator and microcomputer software programming replace traditional hardware circuit (as linear sensorization, setting value circuit, the parameter input circuit, square, evolution, PID computing circuit, comparator circuit, timer, counter circuit, sequential circuit, logical circuit or the like), so hardware circuit is simple, and the function of this regulator can by the programming way change, improve the ratio of performance to price of instrument greatly.

The purpose of this utility model provides a kind of microcomputer digital display regulator, this microcomputer digital display regulator has the keyboard input of optimization and the interface arrangement that shows, and require this interface arrangement to take into full account the condition and the restriction of industry spot, as far as possible with very simple four key boards and display interface device, realize very effective keypad information input, keyboard control and man-machine conversation software for display thereof, make the information input of instrument and Keyboard Control operation become simple and clear.

The purpose of this utility model is to realize like this, construct a kind of microcomputer digital display regulator, comprising: sensor (1), the preposition unit (2) that receives described sensor (1) output, the operation processing unit (3) that is connected with the output terminal of described preposition unit (2), the display unit (4) that is connected with described operation processing unit (3) respectively, input block (5), control output unit (6); Described operation processing unit 3 comprises a single-chip microcomputer (31), it is characterized in that, described input block 5 is made up of four buttons (51,52,53,54), and described display unit (4) comprises a plurality of LED nixie displaies (41,47,48) and a plurality of pilot lamp (42,43,44,45,46); Described four buttons (51,52,53,54) respectively with the P1(or the P3 of single-chip microcomputer 31) mouthful four Tiaokou lines be connected, described nixie display (41,47 and 48) each in respectively comprises 17 hop count sign indicating number display and is with a serial input, 8 shift registers that are used to drive the parallel delivery outlet of described 7 hop count sign indicating number displays, be connected on the clock output line of described single-chip microcomputer (31) after the whole parallel connections of the input end of clock of described shift register, the serial input port of first shift register in the described shift register is connected on the data line of described single-chip microcomputer (3), the serial input port of described all the other shift registers is connected on the serial delivery outlet of the previous shift register of this shift register, the clock output line of described single-chip microcomputer (31) and data line are respectively Tiaokou lines of described single-chip microcomputer (31), described a plurality of pilot lamp (42,43,44,45,46) respectively there is a utmost point to be connected, described a plurality of pilot lamp (42 with the corresponding output terminal of a described shift register, 43,44,45,46) another utmost point and described nixie display (41 are respectively arranged, the common port of 7 hop count sign indicating number display tubes of each 47 and 48) is connected.

Microcomputer digital display device of the present utility model is characterized in that: also comprise being connected the voltage control unit (4A) that is used to control described display unit (4) voltage with described operation processing unit (3); The clock output line of described single-chip microcomputer (31) and data line can be its P1(or P3) mouthful two Tiaokou lines, more or when the connecting line of interface is longer when described charactron number, described P1(or P3) mouthful two Tiaokou lines need connect the driving interface chip, the Control of Voltage line of described voltage control unit (4A) connects the P1(or the P3 of described single-chip microcomputer (31)) mouthful a Tiaokou line, the clock output line of described single-chip microcomputer (31), except that clock output line was connected to a Tiaokou line of described single-chip microcomputer separately, data line and Control of Voltage line were connected to a Tiaokou line jointly with other peripheral hardware respectively in data line and the Control of Voltage line.

Implement microcomputer digital display regulator of the present utility model, compared with prior art have following advantage, characteristics and good effect:

1) simple--the utility model utilizes the P1(or the P3 of MCS-51 single-chip microcomputer) mouthful 5～7 Tiaokou lines as the I/O mouth, four buttons directly are connected with a mouthful line respectively, display comprises that eliminating flicker takies three Tiaokou lines, the shared Tiaokou line of two difference in the four Tiaokou lines that two Tiaokou lines wherein also can take with button.The hardware resource of single-chip microcomputer takies seldom like this, need not increase the peripheral chip of single-chip microcomputer, and just much more simply the design of wiring board.Because display is static the demonstration, does not need dynamic refresh; Judging whether certain button only is pressed needs a software instruction, so the expense of software also seldom.

2) flexible--because display interface only takies three Tiaokou lines, irrelevant with the number increase and decrease of nixie display, this provides great convenience with regard to the number of giving increase and decrease charactron in the circuit design, particularly seems more flexible when the circuit board of single-chip microcomputer and display separately designs.Adopt this display interface, a kind of fixing and technical scheme that only need several lines seldom can also be provided for display and driving circuit are integrated.

Because the decoding of button and key entry information Recognition are handled and are finished by microcomputer software, though only used four buttons, can easily realize complicated information input, or else need change the hardware configuration of circuit.

3) owing to have above advantage, make the application of single-chip microcomputer in instrument be able to easy realization, it can replace the information input system of conventional instrument complexity, replaces complex mathematical computing circuit, sequential control circuit and logic control circuit, makes instrument have the very high ratio of performance to price.

In conjunction with the accompanying drawings,, further specify characteristics of the present utility model by embodiment, in the accompanying drawing:

Fig. 1 is the block scheme of microcomputer digital display regulator;

Fig. 2 is the control panel synoptic diagram of microcomputer digital display regulator of the present utility model;

Fig. 3 is that microcomputer digital display regulator state of the present utility model changes and the button operation schematic flow sheet;

Fig. 4 is the synoptic diagram that display, keyboard are connected with single-chip microcomputer in the microcomputer digital display regulator of the present utility model;

Fig. 5 is a main board circuit diagram in the microcomputer digital display regulator of the present utility model;

Fig. 6 is the interface circuit block scheme of input block 5, display unit 4 and operation processing unit 3.

Microcomputer digital display regulator shown in Figure 1 mainly comprises following components: sensor 1, preposition unit 2, operation processing unit 3, display unit 4, input block 5, control output unit 6.

Concerning the microcomputer digital display regulator of practicality, the selection of keyboard number is a very crucial selection.It is many to press bond number, and the input of complex information is realized easily, maybe will increase interface circuit chips but will take more microcomputer hardware resource, and it is complicated that instrument face plate will become, the operative employee will remember the function of button on each, otherwise just can not proper operation, and this has just reduced the practicality of instrument.Key number very little, though reduced used hardware, operation can be very inconvenient, realize that complicated information input is just very difficult.Microcomputer digital display regulator of the present utility model adopts four buttons, and as shown in Figure 2, these four buttons have indicated " A/M ", " UP ", " DOWM ", " PAR " respectively.

In Fig. 2, the front panel of digital display regulator of the present utility model is provided with ten LED charactrons, five led state pilot lamp and four above-mentioned buttons.The one 4 LED nixie display 41 is used to show measured value, and be glittering during warning; Temperature control pilot lamp 42 represents that when glittering regulator is in auto state; Pilot lamp 43(OPN) for starting, actuator makes pilot lamp; Pilot lamp 44 closes action indicator for actuator; Pilot lamp 45 is the setting pilot lamp, when this lamp is glittering, and the 24 LED nixie display 48 Alternation Display setup parameter and setting values; Pilot lamp 46 is the manual state pilot lamp, when this lamp is glittering, shows that regulator is in manual state; Two-bit digital code display 47 is used to show the actuator position feedback signal value; The 24 figure place sign indicating number display 48 is used for display setting value under auto state, display alarm limit under the set condition, and pid parameter, actuator operating dead zone, manual state show the actuator position set-point down.In four buttons, A/M button 51 is the automatic/hand switch key; PAR button 54 is provided with key for parameter; UP button 52 is the increment key; DOWM button 53 is the depreciation key.

Fig. 3 provides microcomputer digital display regulator state of the present utility model and changes and the button operation schematic flow sheet.

As shown in Figure 4, in microcomputer digital display regulator of the present utility model, in the interface of keyboard and display and microcomputer, adopted the MCS-51 series monolithic, four buttons respectively with the P1(or the P3 of single-chip microcomputer) mouthful four Tiaokou lines be connected, do not need to increase interface circuit chips; Each 7 hop count sign indicating number display is imported by a serial, the shift register of eight bit parallels output drives, serial input takies single-chip microcomputer P1(or P3) mouthful two Tiaokou lines (not necessarily serial port line), in this two Tiaokous line, article one, be data line, another kind is a clock line, and clock line takies a Tiaokou line separately, in the four Tiaokou lines that data line can take for button one.The number of the nixie display in the circuit is unrestricted, and when the number of nixie display is four or four when following, nixie display has satisfied display effect.When the nixie display number more for a long time, then more significantly flashing can appear in display when showing when refreshing, and influences display effect.Be to eliminate flashing of display, must increase the voltage that a Tiaokou line is used to control nixie display, before refreshing demonstration, remove the voltage of nixie display earlier, close and show, refresh the voltage of adding display after the demonstration, display is normally shown.In the four Tiaokou lines that the mouth line of this control display voltage can take for button one.In the interfacing scheme of this keyboard display and microcomputer, need take 7 Tiaokou lines of single-chip microcomputer at most, the minimum 5 Tiaokou lines that can only take single-chip microcomputer.In four buttons, two buttons are numerical key, and one of them is the increment key, and another is the depreciation key, and two buttons in addition are pattern (state) key.The decoding of button and key entry information Recognition are handled and are finished by microcomputer software; Display contents refreshes carries out serial output by two Tiaokou lines of single-chip microcomputer to a series of SI PO shift register and finishes; Eliminating display flicker is finished by a Tiaokou line of single-chip microcomputer.The number that increases nixie display need not increase and change the mouth line of single-chip microcomputer.

In order to allow the user clearly know the residing state of instrument, be convenient to the user and correctly operate and import correct information, also designed unique symbol and corresponding information Alternation Display software and state and operation information software for display.

Below in conjunction with Fig. 2 and Fig. 3, be example with microcomputer digital display regulator instrument of the present utility model (three-in-one direct control electric actuator type), explain its working condition and specific implementation.

The main indicating characteristic of several main states is described as follows:

Auto state: pilot lamp 42 is glittering, and 41 show measured value, and 47 show actuator position value of feedback, 48 display setting values.

Manual state: pilot lamp 46 is glittering, and 48 show manual state symbol "=" and output setting value, 41,47 same auto states.

Each parameter display update state: 48 Alternation Display parameter symbols and relevant parameters value, 41,47 same auto states.

Actuator skilled hand behaviour: 48 show that the skilled hand grasps symbol " three " and actuator position value of feedback, 41,47 same auto states.

Embodiment is simply described as follows to the utility model:

1, at each parameter display update state, " UP " and " DOWM " key is a numerical key, and wherein " UP " key is the increment key, and " DOWN " key is the depreciation key.Within half second, whenever click " UP " key, then the relevant parameters value increases 1, if press the time of key above half second, then parameter value accelerated growth step by step, through reaching a constant value-added speed fast after three speed increments, by the different state of software programming definition, the numerical value of parameter can only be in certain scope (for example 0～99 under different states, 0～1600,0～9999 etc.) changes, like this for setting bigger numerical value or making bigger parameter modification and also can feel convenient and swift.

In addition, this numerical key scheme is very practical to instrument.Press the A/M key, make instrument become manual state by auto state, the two-bit digital code display 47 of instrument shows the location feedback value of electric actuator, the output valve of 48 Displaying Meters under auto state, revise if need, then press " UP " or " DOWN " key, then 48 displayed value increases and decreases on former numerical value basis, has embodied the continuity that analog quantity output changes.

2, instrument all has different show states under every kind of different state.Under each parameter display update state, four LED nixie displaies are Alternation Display relevant parameters symbol and parameter value 8., and the operator can know clearly that what numerical value is what parameter of instrument be now by this show state.If do not make an amendment, then can be by pressing the display update state that " PAR " key enters next parameter; If need to change parameter value; then can directly connect " UP " or " DOWN " key and enter modification; process of changing and result show on display 48 and are stored in automatically that (instrument has power down protection in the corresponding memory cell at once; even outage back data still can keep more than half a year), operate very easy.

3, can define different states by software programming, and button is redefined.Under auto state, press " PAR " key twice, instrument is in electric actuator skilled hand operating state, and at this moment " UP " and " DOWN " key is defined as the control electric actuator respectively and waits upon the switch that the clothes motor rotates and reverse.Press " UP " key, then instrument inner control actuator is waitd upon the relay adhesive that the clothes motor is just changeing; Press " DOWN " key, the then relay adhesive of control counter-rotating, the turned position of actuator can feed back to instrument by position transmitter, shows on display 47,48, so just can finish the manual regulating and controlling operation to electric actuator.

4, find out that with the button operation schematic flow sheet it is more rational adopting four buttons from the digital display regulator state change of Fig. 3.Because pid parameter, J parameter do not need often to reset or revise, just operate usually by the professional, set up the back and keep an eye on by the general operation worker, so adopt the method for input in order, key is set with minimizing.Revise the operation that these general operations worker uses always and only need to learn easily by carrying out behind the primary key and enter automatic control state, manual operation, setting value, the nature that operates is very convenient.

Pressing " PAR " key can make regulator enter another kind of state from a kind of state in order, all available " UP " and " DOWN " key carry out parameter modification under every kind of state, if there is not " A/M " key, it is just cumbersome to return to auto state midway, must press " PAR " key repeatedly." A/M " key has been arranged, dropped by the wayside and only need click this key and just get back to automatic control state." A/M " key still is that automatic/hand does not have the disturbance switch key, clicks and just can realize conversion.As seen realize aforesaid operations, more buttons do not increase the convenience of operation, and differing, then the operation meeting is pretty troublesome for a button.

Fig. 6 is an input block 5, the interface circuit block scheme of display unit 4 and operation processing unit 3, in conjunction with Fig. 4, four buttons 51 of input block 5,52,53,54 are connected with the 4 Tiaokou lines (P1 or P3) of single-chip microcomputer 31 respectively, display unit 4 comprises a plurality of nixie displaies (41,47,48) and a plurality of LED light (42,43,44,45,46) and control these nixie displaies, the voltage control unit 4A of the voltage of pilot lamp, voltage control unit 4A is made up of the three terminal voltage voltage stabilizers and the triode operating circuit of adjustable voltage, the conducting of triode or cut-off state can change the burning voltage of three terminal voltage voltage stabilizers by a Tiaokou line traffic control of single-chip microcomputer 31 by the conducting cut-off state that changes triode.Before single-chip microcomputer 31 refreshes demonstration, by a described Tiaokou line burning voltage of three terminal voltage voltage stabilizers is reduced earlier, after refreshing demonstration, make the burning voltage of three terminal regulator return to the normal display voltage of nixie display and pilot lamp by described mouthful line again, thereby can eliminate the scintillation that refreshes nixie display and pilot lamp when showing.

Claims (2)

1, a kind of microcomputer digital display regulator comprises: sensor (1), the preposition unit (2) that receives described sensor (1) output, the operation processing unit (3) that is connected with the output terminal of described preposition unit (2), the display unit (4) that is connected with described operation processing unit (3) respectively, input block (5), control output unit (6); Described operation processing unit 3 comprises a single-chip microcomputer (31), it is characterized in that, described input block 5 is made up of four buttons (51,52,53,54), and described display unit (4) comprises a plurality of LED nixie displaies (41,47,48) and a plurality of pilot lamp (42,43,44,45,46); Described four buttons (51,52,53,54) be connected with P1 (or P3) mouthful four Tiaokou lines of single-chip microcomputer 31 respectively, described nixie display (41,47 and 48) each in respectively comprises 17 hop count sign indicating number display and is with a serial input, 8 shift registers that are used to drive the parallel delivery outlet of described 7 hop count sign indicating number displays, be connected on the clock output line of described single-chip microcomputer (31) after the whole parallel connections of the input end of clock of described shift register, the serial input port of first shift register in the described shift register is connected on the data line of described single-chip microcomputer (31), the serial input port of described all the other shift registers is connected on the serial delivery outlet of the previous shift register of this shift register, the clock output line of described single-chip microcomputer (31) and data line are respectively Tiaokou lines of described single-chip microcomputer (31), described a plurality of pilot lamp (42,43,44,45,46) respectively there is a utmost point to be connected, described a plurality of pilot lamp (42 with the corresponding output terminal of a described shift register, 43,44,45,46) another utmost point and described nixie display (41 are respectively arranged, the common port of 7 hop count sign indicating number display tubes of each 47 and 48) is connected.

2, microcomputer digital display device as claimed in claim 1 is characterized in that: also comprise being connected the voltage control unit (4A) that is used to control described display unit (4) voltage with described operation processing unit (3); The clock output line of described single-chip microcomputer (31) and data line can be its P1(or P3) mouthful two Tiaokou lines, more or when the connecting line of interface is longer when described charactron number, described P1(or P3) mouthful two Tiaokou lines need connect the driving interface chip, the Control of Voltage line of described voltage control unit (4A) connects the P1(or the P3 of described single-chip microcomputer (31)) mouthful a Tiaokou line, the clock output line of described single-chip microcomputer (31), except that clock output line was connected to a Tiaokou line of described single-chip microcomputer separately, data line and Control of Voltage line were connected to a Tiaokou line jointly with other peripheral hardware respectively in data line and the Control of Voltage line.

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