CN86204098U - Simplified time sequence control unit for microcomputer - Google Patents

Abstract

The utility model is composed of a time signal circuit, a digital clock circuit, a time display screen, a semiconductor memory, a programming circuit and an executing circuit. The utility model not only can be used as a timer, but also can control in multi-path according to a pre-program. Control paths are not limited, and time interval and times of each control path can be determined arbitrarily. The utility model has the advantages of visual programming, simple and available structure, low cost, convenient operation, high reliability, and multi-function. Users only need to dial setting digital and then press a programming key to arrange a needed program in, without regulating complex time matrix circuit or mastering or using computer language.

Description

Simplified time sequence control unit for microcomputer

A kind of simple and easy micro computer Style Time Order Controller belongs to timing and control field.

At present, the programming controller of time be can set up and measure, matrix form control circuit and storage logical formula control circuit adopted more without mechanical driving mechanism.The former be with time-base signal through counting, behind the frequency division, when translating, the signal of class interval forms matrix plate, programming is to realize in the mode that diode is connected matrix plate corresponding coordinate point.The controller of this form, the way of control, the number of times and the time interval of the control of every road, all be subjected to the restriction of matrix plate size and circuit scale, programming is inconvenient, and cost is higher.A kind of controller in back adopts large scale integrated circuit EPROM, solved the problem of multichannel output, but its programmable counter adopts general binary counter, or employing has the digital clock circuit of binary-coded decimal output, used device is many, need consult the time during programming---the binary address mapping table, very loaded down with trivial details, the general user is difficult to programme.

The purpose of this utility model is a kind of improved programming controller of development, but it should have easily multichannel output of programming, simple in structure, components and parts are few, the advantage that cost is low, can make automatic control technology spread to general medium and small enterprises and institutions and family, automatically control in order to production run, household electrical appliance are controlled automatically, school's automatic ringing control, and the time-controlled occasion of various needs.

The following circuit theory that is based on the utility model realizes: utilize semiconductor memory as the nondeclarative memory element, with the seven segment numerical shows signal of digital clock circuit directly or after decoding, addressing signal as semiconductor memory, in select the storage content of address to be read out, this content is the drive signal of program executing circuit in the indicated moment of digital clock.Each of storage content drives one the tunnel respectively and carries out relay.If a certain position makes when being output as " 0 " and carries out the relay adhesive, start consumer, when then being output as " 1 ", just close consumer.Digital clock is timing ceaselessly, and memory address just constantly changes, and the content of being stored also just is read out by the order of giving volume one by one, makes consumer be starting state in some time, and the other time then is closed.Controller control electrical appliance quantity is determined by memory byte figure place.Such as the memory of selecting eight of word lengths for use, can carry out eight tunnel controls, two parallel connections then control ten six the tunnel.Therefore, can adapt to multiple occasion, realize self-timing control.

The utility model is described in further detail below in conjunction with drawings and the specific embodiments.

Fig. 1 is simple and easy micro computer Style Time Order Controller block scheme.

Fig. 2 is simple and easy micro computer Style Time Order Controller electrical schematic diagram.

Fig. 3 shows and addressing signal mapping table for field.

Fig. 4 is that the field after decoding shows and addressing signal mapping table.

Simple and easy micro computer Style Time Order Controller is made up of seven parts such as time base circuit, timepiece circuit, display device, semiconductor memory, executive circuit, programmed circuit, power supplys.The each several part mutual relationship as shown in Figure 1.Wherein time-base signal can be produced by quartz oscillator; Timepiece circuit can adopt LED single-chip digital clock circuit, as: LM8361, LM8363, LM8365, EA7316, MM5387 also can adopt the shared ordinary electronic wrist-watch circuit of LCD back electrode; Memory can adopt the semiconductor memory of any model; Display device need be decided on the timepiece circuit requirement, can be the LED digital display screen, also can be the LCD digital display screen; Executive circuit can adopt relay or noncontacting switch output; Programmed circuit is decided on the semiconductor memory model.

Fig. 2 is for adopting a kind of Style Time Order Controller electrical schematic diagram of above-mentioned principle.Quartz crystal model HC-18, harmonics 3579545HZ.MM5369 is vibration, frequency divider, the time-base signal of output 60HZ.The direct driving LED display screen of timepiece circuit MM5387 FR-1094-111, show the upper and lower noon, hour and minute numerical value.It is 2K * 8 that semiconductor memory adopts EPROM2716, capacity, totally ten one of address wires.From 25 LED display drive signals of timepiece circuit, take out 13 as the addressing signal, wherein the morning signal AM, " time " ten signal HT, " time " totally ten of ten signal MTd.e.f of individual position signal HUa.b.e.f.g " branch ", directly connect 2716 address wire, and the decoding scheme that the MUb.f.g of a minute position forms through Sheffer stroke gate YF1-YF4 translates and is spaced apart five minutes positive and negative pulse signals that replace, as the ten address wire, add power supply and executive circuit, promptly form 24 hours repetition periods, stepped intervals five minutes, eight tunnel outputs, complete time corresponding sequence circuit of demonstration time and real time.

Major technique characteristics of the present utility model are to utilize the double addressing signal of doing semiconductor memory of digital clock seven segment numerical shows signal, and rationally selecting shows signal for use is the core of this technical characterstic.Selecting for use of shows signal should guarantee The whole control in the cycle, and the shared address location of each stepped intervals does not repeat, and number is a principle as far as possible less.

Below only hour shows signal of a position is selected for use and is described as follows: show with addressing signal mapping table and can illustrate from the field of Fig. 3, a hour position these ten of 0-9 occurring when digital, as long as select for use five display signal lines, can guarantee that the address do not repeat as the addressing line.If press logic and the corresponding relation of Fig. 4, the EPROM of available 1K * 8 finishes the control function of present embodiment, from saving the angle of memory capacity, is the best design of present embodiment.

Fig. 2 circuit is not changing under other components and parts situation, only change timepiece circuit time-base signal frequency, can prolong or dwindle control cycle and stepped intervals, the time interval of display screen indication this moment and executive circuit control no longer is actual time, and only reflects certain program relative order or numerical value at interval.

Through above-mentioned analysis as can be known, simple and easy micro computer Style Time Order Controller control cycle is long more, stepped intervals is more little, and the control way is many more, and the capacity of corresponding requirements memory is big more; Vice versa.

Each user is by the special-purpose programming for convenience, and present embodiment is provided with manual simplified programmed circuit, and this circuit is by transistor T 1.Compositions such as resistance R 0-R18, capacitor C, K switch 0-K9.During programming, at first closed K8 sets everybody input data by load switch K0-K7 again, by mileometer adjustment key K10, K11 digital clock circuit is transferred to the desire programming time, presses K9, capacitor C is discharged over the ground, T1 ends, the programming pulse of output 50ms, and the data of a byte promptly write.The width of programming pulse is by R17 ℃ of decision.Putting several principle of work can C ₀The position is illustrated for example: if K ₀Closure, because of RO＞＞R8, so, make O through the dividing potential drop effect of RO, executive circuit biasing resistor R8 and T2be knot ₀End is changed to " 0 " data; If K ₀Disconnect, then make O ₀Be changed to " 1 " data.

Simplified time sequence control unit for microcomputer is simple than similar controller circuit structure, components and parts are few, cost is low. It both can do time display, can carry out multichannel control by giving programming again, and the control way is not limit, and the time interval and the number of times of the control of every road can be set up arbitrarily. Programing work is directly perceived, simple, and it needn't adjust loaded down with trivial details time matrix circuit, also need not to grasp computer language, and the user needs only the time according to the digital screen indication, dials good load switch and press the programming telegraph key to get final product.

Claims (3)

1, a kind of simple and easy micro computer Style Time Order Controller that is made of time-base signal circuit, semiconductor digital clock circuit, time display screen, semiconductor memory, programmed circuit and executive circuit is characterized in that the address wire of semiconductor memory is electrically connected with the time indicating signal line of digital clock circuit.

2, simple and easy micro computer Style Time Order Controller as claimed in claim 1 is characterized in that being connected to decoding scheme between the time indicating signal of the address wire of semiconductor memory and digital clock circuit.

3, simple and easy micro computer Style Time Order Controller as claimed in claim 1 or 2 is characterized in that the data terminal of semiconductor memory is electrically connected with the output terminal of programmed circuit, also can be electrically connected by load switch.

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