CN2401148Y - Intelligent belt type memory test instrument - Google Patents

Abstract

The utility model discloses an intelligent belt type memory test instrument which solves the problems that an information window of an existing memory instrument is small, controls are easy to loss, power consumption is large, etc. The utility model has the technical proposal that an input terminal of a CUP is connected with output terminals of a keyboard controlling circuit and a sensor circuit, an output terminal of the CUP is connected with a motor driving circuit and a timing display circuit, the motor driving circuit is connected with a motor, and the edge of an information band base is provided with a black narrow band with gaps. The utility model has many functions, e. g. timing selection, automatic and manual resetting, clockwise and anticlockwise selections and linking motion. The utility model has the advantages of high control precision and flexible and various information selections and test designs. The utility model can be widely used in the departments of teaching, scientific research, psychological consultation, etc. The utility model provides an intelligent product for replacing memory instruments.

Description

Intelligent belt memory test instrument

This utility model relates to a kind of psychology gauge, particularly a kind of psychology gauge that is used to test memory.

The information carrier great majority of memory instrument adopt disc type or two kinds of structures of drum-type at present.

The memory instrument of tray type structure, the carrier that is exactly memory material information are a rigid disc, by motor regularly, decide the driving rotation of angle.Have the information paper disc of memory material, be fixed on the rigid disk, a shutter is arranged on the information paper disc, and near the edge of this plate, open a wicket, can make the subjects therefrom see local message on the paper disc.Under the certain condition of the per step anglec of rotation of motor, the size of window just depends on the size of disk, and the big more visual information amount of window is just many more, and yes that we are desirable for this.But it is also just big more to coil big more its rotary inertia, and this will bring many difficulties to driving device, can produce when starting that rotating speed descends and phenomenon such as shake takes place when stopping.Just must take the damping measure in order to overcome jitter phenomenon, the increase damping then starts just more difficult, must strengthen driving power again ...So it is excessive that the diameter of general information dish is difficult for, the area of its information window is also less, is about 10 millimeters * 28 millimeters.Because information carrier is circular discs, so that information window also mostly is is segmental, the little tissue of experiment material of giving like this of information window has brought bigger restriction, because drive circuit is non intelligent control circuit, therefore the motor location is realized that rotating control is difficult, and is not had reset function.

Drum-type be frame for movement memory instrument, the carrier that is exactly memory material information is a rigid cylinder, and the information paper tape is attached at the external margin of cylinder, and by driving device regularly, decide the driving of angle and rotates.On the surface, the drum-type structure has overcome " narrow window " phenomenon of tray type structure, and for the tissue of information material has brought bigger motility, but the rotary inertia of rigid drum is bigger than dish, almost is difficult to drive with micro-step motor.So adopt some special frame for movements more, bring noise big and the big and heavy problem of volume promptly enables the electricity consumption machine to drive except that viewing window increases so again, other problem all can not solve.

The purpose of this utility model provides that a kind of information window area is big, volume is little and thin, control accurately, and forward and backward is adjustable arbitrarily, can be automatically and the multifunctional intelligent belt memory test instrument of hand-reset.

The technical solution of the utility model is that it mainly comprises by alignment sensor circuit, motor-drive circuit, regularly the microcomputer control circuit of display circuit, keyboard control circuit, microprocessor CPU composition and motor, belt information carrier, mechanical driving device; Its connected mode is that the input of microprocessor links to each other with the outfan of keyboard control circuit with the alignment sensor circuit, the outfan of microprocessor links to each other with the input of motor-drive circuit, timing display circuit, the outfan of motor-drive circuit links to each other with motor, motor drives the belt information carrier by mechanical driving device, the edge of belt information carrier with the band space the black arrowband, and above information band is housed.

Below in conjunction with accompanying drawing this utility model is described in further detail;

Fig. 1 is the functional-block diagram of intelligent belt memory test instrument;

Fig. 2 is the circuit diagram of intelligent belt memory test instrument;

Fig. 3 is the Keyboard Control panel figure of intelligent belt memory test instrument;

Fig. 4 is the machine shape sketch map of intelligent belt memory test instrument.

As shown in Figure 1 and Figure 2, U4 be microprocessor CPU it be core of the present utility model, by it finish time set and demonstration, the hand-reset of intelligent belt memory test instrument and automatically reset, forward and reverse rotation, forward and reverse continuous rotation, the collection of pick off framing signal, the work such as control of motor-drive circuit, microprocessor is selected 8 single-chip microcomputer 89C2051 for use.

The information carrier of this programme adopts belt structural information carrier, and the edge of belt information carrier is with the black arrowband, and the black arrowband is provided with the equidistant space and the special-purpose wide seam that automatically resets that the alignment sensor identification signal is used.The belt information carrier is preferably selected conveyor type information tape base for use, and the carrier shaft that drives conveyor type information tape base is two nonmetal hollow cylinders, and links to each other with motor shaft by 1 pair of reduction gearing.

Regularly display circuit is made up of decoder U2, LED light emitting diode D1-D6, resistance R 2-R7.Its effect is the timing signal that receives microprocessor output, directly drives 6 LED by decoder U2, and the bright expression timing of D1 is that 0.5 second, the bright expression timing of D2 are 1 second ... and the like, the bright expression demonstration time of D6 is 5 seconds, be total to 0.5S, 1S, 2S, 3S, 4S, six kinds of timing modes of 5S.Decoder is selected 74LS138 for use.

The alignment sensor circuit is by two single beam infrared photoelectric sensor IS1, IS2, or dual-beam infrared sensor and Schmidt trigger U3 form.U3 is used for shaping is carried out in pick off output pulse.IS2 is for the location optocoupler, and when receiving the framing signal in equal intervals space, information tape base edge, the INT0 that is input to CPU through the U3:B shaping holds, and interrupts to the CPU application, enters this moment regularly to show information state.IS1 is the optocoupler that resets, automatically reseting during special-purpose wide seam information on receiving information tape base edge, IS2 also receives information, it is input to P1.7 end and the INT0 end of CPU through U3:A and U3:B shaping, CPU just sends reset instruction, and promptly CPU has only to detect two optocouplers simultaneously signal when output arranged when finishing information band initial reset task, motor just stops operating, and makes information band be parked in original position.

Motor: though do not adopt the locate mode of motor in the belt scheme, because of motor have start fast, operate steadily, use low driving DC voltage, be easy to characteristics such as control driving.Particularly it has very strong locking position function.Therefore this utility model still adopts motor as power source.M1 is a kind of four phase step motor (also can use three-phase stepper motor) among Fig. 2, its working method has two kinds, four four clap and four phase eight beat mutually, and four bats of four phases are divided into two kinds, its phase sequence is respectively A  B  C  D  A and AB  BC  CD  DA, because of the latter's startup and locking moment are bigger, so in this utility model, adopted this mode.Motor can bidirectional movement by different sequential controls.Motor shaft drives two carrier shafts that the information tape base is housed by 1 pair of reduction gearing.

Motor-drive circuit is made up of five audions of Q1-Q5 and four phase inverters of U1:A-U1:D and diode D7-D12.This drive circuit has adopted special high-low pressure dual power supply combination drive circuit, can guarantee the high voltage when motor rotates, strong power, and low-voltage, low energy consumption in the time of satisfying motor again and stop, promptly high voltage is afterburning drives, and low-voltage is kept locking.Its advantage is to make motor-driven more reliable and stable, and the excessive problem of quiescent dissipation when having overcome long-time locking.When the CPU drive motors rotated, elder generation write to hang down to P1.6 and makes the Q1 conducting, and the high voltage+12V voltage when afterburning the driving is provided automatically just can output on each phase coil of motor; This moment, collector potential was approximately+12V because of the Q1 saturation conduction, made diode D7 be in back biased and ended, and+5V output is isolated automatically.Meanwhile CPU from the P1.0-P1.3 output control pulse, rotates motor by the phase sequence requirement.When alignment sensor when CPU application stops to interrupt, CPU stops to export pulse immediately, and the output state before keeping interrupting, and motor is stopped rapidly.Subsequently P1.6 being write 1 ends Q1.Because the collector potential of Q1 descends, and makes the D7 forward conduction, provide automatically and keep the needed low-voltage of locking.D8-D12 among Fig. 2 is in order to eliminate each driving tube of Q1-Q5 in the conversion of motor phase sequence, because of unexpected motor coil back-emf by generation, and the holding circuit of design.Phase inverter U1 selects 74LSO4 for use

Keyboard control circuit as shown in Figure 2, it is made up of control knob S1～S6, capacitor C 1～C2, resistance R 15 and R19.Its effect is to be certain requirement in the realization recall tests, and with each function key on the board, control signal manually is set gives CPU.

Supervisory keyboard panel figure has 6 timing indicators as shown in Figure 3, and 6 function keys and 1 on and off switch are formed.Wherein S1 is that positive interlock button, S2 are that anti-interlock button, S3 are that forward-reverse switch, S4 are for regularly selection, S5 are operation/time-out; S6 is hand-reset.

The machine shape sketch map when motor stops to show information, shows detecting information content on the information band as shown in Figure 4 in the form; No information in the form when motor rotates.

During use, at first turn on the power switch, CPU will realize resetting automatically making the information tape base rotate to initial position by program curing, and promptly the position of no any information is in the wait controlled state in the form, at this moment, the display lamp of 0.5S bright (the default time of instrument is set to 0.5S).The tester is provided with each function key on the board by the testing scheme requirement.For example when the needs subjects remembered each bar information in 4 seconds, the tester presses timing selecting switch S4 made the LED light emitting diode jump to 4S by 0.5S.Meanwhile the time setting signal of this 4S footpath P3.4 is sent to CPU, CPU works respectively by program curing control each several part circuit: 1. it makes the instruction that goes out to show time 4S by P3.0, P3.1, P3.7 human hair combing waste, through decoder U2 decoding and output signal, make LED light emitting diode D5 luminous.2. cpu instruction makes the Q1 conducting by P1.6, and D7 ends, and+5V output is isolated automatically, and+12V voltage just can output to each phase coil of motor.CPU rotates motor by P1.0～P1.3 output control pulse simultaneously, at this moment, no information in the information window, promptly the information band based black is partly facing to location optocoupler IS2; When information tape base edge voids partly faces toward location optocoupler IS2, location optocoupler IS2 detects optical signal (framing signal) and sends to CPU through Schmidt trigger U3, CPU ends Q1 by P1.6, D7 conducting motor-drive circuit is in+5V low voltage sustain lock-out state, the 4S that stops operating information appears and in motor stall information window, show behind the 4S that CPU controls Q1 conducting D7 again and rotates by motor and appear in the information window until next bar information, stop to show 4S.The reciprocation cycle said process finishes until all detecting information demonstrations like this.When the special-purpose wide seam that automatically resets passed through optocoupler, two optocouplers of IS1 and IS2 all had signal output, and CPU sends reset instruction, and instrument enters the state of automatically reseting, and motor stops automatically, and information band is parked in initial position, is in the wait controlled state.

If a subjects has surveyed, and the requirement of next subjects's test condition is identical, need not to reset working method, presses operation/Pause key S5 and can make instrument enter information test run state.If needing operation suspension during examination is surveyed can realize suspending by S5; If needing the continuation operation to click S5 resumes operation again.

In test if need show former information again, the tester can press forward-reverse switch button S3, this signal sends by CPU that reverse instruction is adjusted phase sequence by P3.5 and from P1.0～P1.3 output control pulse, make the motor backward rotation, if oppositely show when needing again to return next bar information of prime information after 3 information, should pin positive interlock button S1, this signal sends the order of forward interlock by P1.4 by CPU, even this moment, IS2 received signal, CPU does not handle yet, realize that forward rotates continuously until getting back to required information display position, decontrol button motor stall (the oppositely identical S2 key of pressing of interlock reason).When the information of replacing low strap, need pin the work that S1 or S2 can finish the replacement information band.

When test need start anew to test midway, press reset key S6, this signal is transported to CPU by RST and makes CPU operation reset routine.

This utility model makes it have six grades of regularly selections of 0.5～5S owing to introducing microprocessor control, automatic and hand-reset, and rotating is selected, and multiple function such as positive and negative continuous rotation makes the recall tests instrument be updated to intelligent product.Because information carrier adopts the belt information carrier, the information window mouth is increased, the windows area selected of belt memory instrument is 20 millimeters * 150 millimeters, and the information item number is no less than 30 information contenies and changes into speech, phrase, statement, graphical symbol from word, number, has greatly enriched information content; Introduce the reduction gearing transmission, thereby solved the problem of slowing down, shaking when stopping when starting, make the conversion time of item of information meet specification requirement (less than 0.2 second).Adopt the orientation sensing circuit, solved deviations (part that occurs two information in the same form) problem; Motor-drive circuit is owing to adopt the work of high-low pressure dual power supply, make the complete machine cost low, low in energy consumption, this is because of memory instrument when work, if adopt the single power supply power supply, make its resting state in stall produce a large amount of unnecessary quiescent dissipations greater than rotation time quiescent time, be in the full power driving condition for a long time, therefore require the power of driving tube bigger, and will strengthen current-limiting resistance, cost is increased.And motor-drive circuit adopts high and low pressure dual power supply mode, high voltage, strong power in the time of protecting positive motor and rotate, low-voltage, low power consumption in the time of satisfying motor again and stop, moving rate pipe gets final product in therefore only needing, reduce energy consumption thereby need not to add current-limiting resistance, reduced cost.

This small product size is little, in light weight, and have function of use and select characteristics such as the detecting information motility is strong by force, be the intelligent product that psychology measuring memory instrument updates, can be widely used in departments such as teaching, scientific research, psychological counselling diagnosis.

Claims (4)

1. intelligent belt memory test instrument, it is characterized in that it mainly comprises by alignment sensor circuit, motor-drive circuit, regularly the microcomputer control circuit of display circuit, keyboard control circuit, microprocessor CPU composition and motor, belt information carrier, mechanical driving device; Its connected mode is that the input of microprocessor links to each other with the alignment sensor circuit output end with keyboard control circuit, the outfan of microprocessor links to each other with the input of motor-drive circuit, timing display circuit, the outfan of motor-drive circuit links to each other with motor, motor drives the belt information carrier by mechanical driving device, the edge of belt information carrier is equipped with information band with the black arrowband in band space above the belt information carrier.

2. according to the described intelligent belt memory test instrument of claim 1, it is characterized in that the belt information carrier is a conveyor type information tape base, the black arrowband at its edge is provided with equidistant space and the special-purpose wide seam that automatically resets.

3. intelligent belt memory test instrument according to claim 1 is characterized in that motor-drive circuit adopts the high and low pressure dual power supply.

4. intelligent belt memory test instrument according to claim 1 is characterized in that mechanical driving device is to drive carrier shaft by reduction gearing.

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