CN2539982Y

CN2539982Y - Angular displacement type timer

Info

Publication number: CN2539982Y
Application number: CN 02210389
Authority: CN
Inventors: 王国辉
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-04-19
Filing date: 2002-04-19
Publication date: 2003-03-12
Anticipated expiration: 2012-04-19

Abstract

The utility model discloses an angular displacement timer and comprises an angular displacement sensor, manual knob, interface circuit, microprocessor, display interface and display, and the knob is used as the time input method, the rotation angle of the knob is detected by the angular displacement sensor, and the microprocessor converts the angular displacement volume of the knob to the timing hour in accordance with a mathematical relationship and times and displays. The angular displacement sensor is used as the time arrangement mechanism, providing the characteristics of a mechanical timer which is easily operated, and also the advantages of an electronic timer which has good accurateness of arranged time and high precision timing. The time arrangement method of the utility model is not only used for the time arrangement, but also is applied to position various parameters of all home appliances and instruments.

Description

Angular displacement formula timer

Technical field:

The utility model relates to a kind of timing device, and especially a kind of angular displacement formula timer belongs to the time keeping instrument technical field.

Background technology:

Traditional appliance timer is divided into two kinds of mechanical type and electronic types.Mechanical timer has easy to operate advantage, but the time, accuracy was set and regularly accuracy is all very poor, and the life-span is shorter.Electronic timer has the time and is provided with that accuracy is good, timing accuracy is high and the reliability advantages of higher, but the time the employing key mode is set, operate very inconvenient.

Summary of the invention:

The utility model discloses a kind of angular displacement formula timer, has overcome regularly shortcomings such as poor accuracy, electronic timer inconvenient operation of existing machinery timer.

The utility model as the time input mode, adopts angular displacement sensor that the anglec of rotation of knob is detected with knob, by microprocessor the knob angular displacement is converted to timing according to certain mathematical relation, and carries out timing and demonstration.

Concrete technical solution is as follows: set up an organization by angular displacement sensor and manual knob makeup time, constitute the time processing mechanism by interface circuit, microprocessor, display interface and display, wherein, the input end of the signal end connection interface circuit that the time sets up an organization, export to the signal port of microprocessor after the logic determines, the corresponding control signal of microprocessor connects display interface, and the display interface output terminal is connected with the control end of display.

Angular displacement sensor can be divided into angular displacement sensor according to principle of work and comprise increment type and absolute type encoder, pot, optical-electricity encoder, electromagnetic type scrambler etc.Can be divided into increment type and absolute type again according to coding principle.

The setting of time is to finish by the knob of rotational displacement sensor, during rotary knob, angular displacement sensor is converted to the signal of certain form to the anglec of rotation of knob, and sends to the time processing mechanism, comprises sense of rotation (the clockwise or counterclockwise) information of knob in the signal simultaneously.

Knob can be with arbitrarily angled any direction rotation.In timing process, knob is not with the reducing and rotate of timing, but still manually rotary knob increases or reduce timing.

Before regularly beginning, timing is zero, and the display demonstration time is similarly zero, at this moment, does not have the angular displacement information of knob in the signal that microprocessor receives.When the rotary knob time of carrying out is provided with, the angular displacement information that comprises knob in the signal that microprocessor receives, microprocessor measures the knob angular displacement, and according to certain mathematical relation angular displacement is converted to time quantum, simultaneously this time quantum is accumulated in the timing.When knob turns clockwise, time quantum is added in the timing; When knob is rotated counterclockwise, from timing, deduct time quantum, but just no longer subtracting time quantum when reducing to zero, operates timing.

Under any circumstance, as long as timing is non-vanishing, just start fixed cycle operator.Along with the process of time timing reduces gradually, when timing reduces to zero, just stop fixed cycle operator, and send timing to signal.In timing process, timing send display to show in real time, and rotary knob changes timing at any time.

Good effect of the present utility model is: adopt angular displacement sensor as time set mechanism, have the mechanical timer convenience operation, have the electronic timer time simultaneously again the advantage that accuracy is good and timing accuracy is high is set.Time set-up mode of the present utility model not only is used for the time setting, can also be applied in the various parameter settings of various household electrical appliances, instrument and meter.

Description of drawings:

Fig. 1 is the utility model structure principle chart.

Fig. 2 is increment type coding timer construction schematic diagram.

Fig. 3 is a pot timer theory structure.

1～knob, 2～angular displacement sensor, 3～time sets up an organization, 4～time processing mechanism, 5～interface circuit, 6～microprocessor, 7～display interface, 8～display.

Embodiment:

Embodiment 1

Shown in 2, as knob Angular Displacement Detecting element, what microprocessor 6 adopted is a kind of single-chip microcomputer with increment type coding principle angular displacement sensor 2 (i.e. " incremental encoder ") with reference to the accompanying drawings.

Knob 1 is connected with the incremental encoder rotor, drives the rotor rotation of incremental encoder during knob 1 rotation.Interface circuit 5 is made of two latchs and respective logic circuit, incremental encoder A road signal connects the input end of latch A, B road signal connects the input end of latch B, the output terminal of latch A connects single-chip microcomputer T0 (input end of timer/counter 0) pin, and the output terminal of latch B connects single-chip microcomputer T1 (input end of timer/counter 1) pin.When the pulse signal of the leading B of pulse signal phase place road, A road, signaling interface is the output terminal output of A road pulse signal by latch A, and B road pulse signal is not exported, and the output terminal of latch B does not have pulse output; When the pulse signal of the leading A of pulse signal phase place road, B road, signaling interface is the output terminal output of B road pulse signal by latch B, and A road pulse signal is not exported, and the output terminal of latch A does not have pulse output.

The single-chip data bus (DB0～DB7) connect display interface 7 data input pins, the corresponding control signal of single-chip microcomputer connects display interface 7 control ends, and display interface 7 output terminals are connected with display 8.

Timing is sent by single-chip microcomputer P10 pin to signal.

In the time of regularly, the pulse number of two pulse signals is measured.Continuous data is zero when regularly beginning, and single-chip microcomputer whenever receives a pulse from pin T0, and continuous data just adds 1, whenever receives a pulse from pin T1, and continuous data just subtracts 1.In subtracting 1 operation, when continuous data being reduced to zero, just no longer subtract 1 operation.In the paired pulses metering, according to certain mathematical relation continuous data is converted to timing in real time, and carries out timing and demonstration.

Embodiment 2

With angular displacement sensor 2 elements of pot as knob 1, single turn potentiometer is provided with two end points and a sliding end, and end points should be as close as possible, but will guarantee not by the sliding end short circuit.End points connects direct supply (supply voltage is V), and sliding end is a signal output part.Sliding end is connected with knob, and when rotary knob, knob drives sliding end and slides on pot, the voltage signal that pot output is changed, and voltage increased when knob turned clockwise, and voltage reduced when knob was rotated counterclockwise.When sliding end process two-end-point, the voltage signal of output will have a sudden change, and signal becomes 0 by V in the time of clockwise, and signal becomes V by 0 in the time of counterclockwise.What microprocessor adopted is a kind of single-chip microcomputer.

Time processing mechanism 4 working powers are direct supply (supply voltage is Vcc), and the pot two-end-point connects this direct supply.Signaling interface 7 is an A/D converter, the input end of analog signal (IN) of pot output termination A/D converter, and the output order sheet machine data bus of A/D converter, the single-chip microcomputer corresponding control signal connects the A/D converter control end.A/D converter is converted to digital quantity to pot output signal (for voltage signal) and is transported to microprocessor 6.

Timing is sent by single-chip microcomputer P10 pin to signal.

Single-chip microcomputer need measure the angular displacement of knob 1, and this continuous data is zero before regularly beginning.Before regularly beginning, knob 1 maintains static, the pot output signal is a certain fixed value, when rotary knob, the pot output signal will change, when a fixed amount Δ of the every increase of signal V (size of Δ V as required determine) just makes continuous data add 1, V just makes continuous data subtract 1 when a fixed amount Δ of the every minimizing of signal.In subtracting 1 operation, when continuous data being reduced to zero, just no longer subtract 1 operation.Through two end points of pots 1,3 o'clock, the pot output signal will sport zero by Vcc (supply voltage), perhaps sport Vcc by zero at sliding end 2, and be processed according to the following rules this moment: when the time signal sports zero by Vcc, make continuous data add 1; When the time signal sports Vcc by zero, make continuous data subtract 1.In to the metering of pot signal, according to certain mathematical relation continuous data is converted to timing in real time, and carries out timing and demonstration.

Claims

1, a kind of angular displacement formula timer, it is characterized in that: set up an organization by angular displacement sensor and manual knob makeup time, constitute the time processing mechanism by interface circuit, microprocessor, display interface and display, wherein, the input end of the signal end connection interface circuit that the time sets up an organization, export to the signal port of microprocessor after the logic determines, the corresponding control signal of microprocessor connects display interface, and the display interface output terminal is connected with the control end of display.

2, timer according to claim 1 is characterized in that: angular displacement sensor comprises increment type and absolute type encoder, pot, optical-electricity encoder, electromagnetic type scrambler.