CN1464100A

CN1464100A - Perception method for clothings quantum of washing machine

Info

Publication number: CN1464100A
Application number: CN 02121000
Authority: CN
Inventors: 高硕晧
Original assignee: LG Electronics Tianjin Appliances Co Ltd
Current assignee: LG Electronics Tianjin Appliances Co Ltd
Priority date: 2002-06-07
Filing date: 2002-06-07
Publication date: 2003-12-31
Anticipated expiration: 2022-06-07
Also published as: CN1316100C

Abstract

The present invention is the clothing amount sensing method for the washing machine to obtain the clothing amount accurately so as to adding water in the proper amount for raised washing effect. The clothing amount sensing method includes the following steps: presetting the reference data for judging clothing amount and the reference voltage after last pulse voltage; calculating the pulse voltage data from power off of the motor to the last pulse produced by the after voltage of the motor; and comparing the obtained pulse voltage data with set reference data to judge the clothing amount range and load.

Description

Perception method for clothings quantum of washing machine

Technical field

The present invention relates to a kind of method of work of washing machine, more particularly, relate to a kind of method of judging the amount of laundry of washing machine load.

Background technology

In general, washing object along with the chemical action of washing agent, can be washed dust off in washing machine naturally, but it is inconvenient only cleaning clothing by washing agent, can also rub and shakes the disengaging that promotes dust by washing machine.

The running control method of above-mentioned existing washing machine is as follows: at first, the laundry amounts in the sink is put in perception, sets inflow and washing agent, wash time according to this laundry amounts.Rotate by the motor drives impeller then, the water of the rotation sink inside by impeller will produce friction with clothing and finish the washing task.

After the washing task is finished, the sewage of sink inside to be got rid of, the water of new supplying clean enters in the sink, rinses according to the good time of default then.After rinsing end, the sewage of sink inside is got rid of, carry out the high speed rotation by motor according to the speed that configures then, the moisture in the clothing is separated by centrifugal motion.

Fig. 1 is the loop diagram of the laundry amounts sensing device of existing washing machine.Existing laundry amounts sensing device has following components: motor 2, and electric capacity 3, triac 4, control part 5 is surveyed electric installation 6.Motor 2 links together with impeller, electric capacity 3 is connected between the main coil and secondary coil of motor 2,

triac

4a, 4b, 4c, 4d is connected between motor 2 and the AC power 1, and the electric current that arrives motor 2 by triac 4 is by control part 5 controls, surveys electric installation 6 and be by the variation of the voltage on the electric capacity 3 voltage pulse output data.

Control part 5 is to determine laundry amounts according to the pulse voltage number that surplus electricity caused that is produced by motor 2 in the actual operation.

Fig. 2 is the pulse voltage datagram by 6 outputs of survey electric installation that is produced by existing motor 2.The signal Vc of the surplus electricity that motor produced is just becoming pulse voltage signal Vo after surveying electric installation.

The laundry amounts sensing device How It Works of existing washing machine is as follows:

At first, put into clothing and intake, inflow reaches the water level that detects laundry amounts to be stopped, control part 5 motor 2 that just comes into operation then, and the running of motor 2 has driven the impeller rotation.

Motor 2 runnings were stopped power supply after several seconds, and this time, impeller can be because its own inertial continues rotation, if clothing is many, clothing and impeller can produce frictional force, so the winding number of impeller is also fewer thereupon; The winding number of impeller will increase to some extent when clothing is fewer on the contrary.

Inertia rotation along with impeller and gyroaxis, motor 2 also can rotate together, and produce surplus, the voltage of this surplus electricity will be presented on the electric capacity 3, so surveying electric installation 6 will be transported to the pulse voltage data of output on the control part 5 by the voltage change on the electric capacity 3, control part 5 calculates impeller to the pulse voltage data always to be stopped, and judges laundry amounts according to the pulse voltage number that is taken place then.

But, existing sensing device and method have following shortcoming: when washings increases, clothing may be wrapped in together, so will cause when stopping supply power, not producing or producing irregular pulse voltage data conditions, so the analytical effect of pulse voltage data will reduce, confidence level is not high yet.

Summary of the invention

The present invention is exactly at weak point of the prior art, by comparing by the time value of the summation of the pulse voltage number that surplus electricity caused that motor produced in the reference data that originally configured and the actual operation, and obtain laundry amounts accurately, thereby reached the purpose that adds washings accurately, also improved the effect of washing greatly.

Technical scheme of the present invention has following step: the no pulse voltage reference value of the reference data of pre-set judgement laundry amounts and judgement final pulse voltage; After motor is stopped power supply, calculate the pulse voltage data that produced by the surplus electricity of motor, pulse voltage data that obtain and the reference data that configures are compared, judge the scope and the load of laundry amounts.

The invention has the beneficial effects as follows to obtain laundry amounts accurately, thereby reached the purpose that adds washings accurately, also improved the effect of washing certainly widely.

Description of drawings

Fig. 1 is the loop diagram of the laundry amounts sensing device of existing washing machine;

Fig. 2 is the oscillating voltage datagram that is produced by motor;

Fig. 3 is the sensing device figure of the laundry amounts of washing machine of the present invention;

Fig. 4 is the pulse voltage data and the time chart of laundry amounts of the present invention;

Fig. 5 is a perception method for clothings quantum flow chart of the present invention.

Among the figure: 1------AC power 2------motor

3------electric capacity 4------triac

5------control part 6------surveys electric installation

11------alternating current 12------motor

13------electric capacity 14------triac

15------data processing division 16------surveys electric installation

The 17------logger

The specific embodiment

The present invention will be described in detail for the contrast accompanying drawing below.

Fig. 3 is the sensing device figure of the laundry amounts of washing machine in the present invention.This sensing device has following components: motor 12, by the main coil of motor 12 and the electric capacity between the secondary coil 13 with along with the variation of voltage on the electric capacity is converted to the laundry amounts sense part that the survey electric installation 16 of pulse voltage data constitutes with signal, the control part that constitutes by data processing division 15 and the laundry amounts perception reference data that has configured and the logger of recording impulse voltage data time 17.Motor 12 is devices of the impeller of revolution washing machine, and also produces the pulse current that is caused by surplus electricity in motor, can come the perception laundry amounts by this pulse current.The laundry amounts sense part plays the effect that the winding number that takes place is replaced with the signal of pulse voltage data mode on motor.The laundry amounts perception reference data that originally configured is arranged in the control part, and compare with this reference data with by the pulse voltage data of laundry amounts sense part output and to judge laundry amounts, and the amount of decision washings.

Triac 14a, 14b, 14c, 14d is connected between motor 12 and the AC power 11, and control by control part by the AC current of triac arrival motor, so power supply by switching on to triac to motor 12 power supply, is surveyed electric installation 16 and is by the variation of the voltage on the electric capacity 13 voltage pulse output data.

The reference data of laundry amounts perception be in washing machine assembling under uncharge situation, carry out the laundry amounts sense operation, carry out sense operation at each laundry amounts, pulse voltage data and corresponding time handled being set at reference data by data processing division 15, at last its value is input to 17 li of loggers.

Fig. 4 is the pulse voltage data and the time chart of laundry amounts of the present invention.Fig. 4 a and Fig. 4 b are many and few situation in laundry amounts.

Motor 12 runnings were stopped power supply after several seconds, and this time, impeller can be because its own inertial continues rotation, if clothing is many, clothing and impeller can produce frictional force, so the winding number of impeller is also fewer thereupon; Opposite when clothing is fewer impeller winding number will by increase.

Explain operation workflow of the present invention below in conjunction with Fig. 5.

Phase I is in the assembling of washing machine, will judge that the no pulse voltage reference value of final pulse voltage and the reference data of laundry amounts perception and a reference value and the no pulse voltage reference data of each amount are input to logger 17 the insides.Be s1.

The reference data of laundry amounts perception be in washing machine assembling under uncharge situation, carry out the laundry amounts sense operation, and pulse voltage data and corresponding time are handled by data processing division 15, at last the total time of pulse voltage, the amount of washings, the relative pulse voltage time of each washing water yield exports and configures laundry amounts determinating reference value and be input to 17 li of loggers.

No pulse voltage reference data are to judge the value of final pulse voltage data, and pulse voltage does not exist in the regular hour under the situation that motor stops in other words, then think the value that motor 12 has stopped fully.

In second stage, at first, to put into clothing in the sink and intake again, inflow reaches the water level that detects laundry amounts to be stopped, data processing division 15 motor 12 that just comes into operation then, the running of motor 12 has also driven impeller.Be s2.

In the phase III, the running of the motor 12 of second stage s2 is stopped power supply after several seconds, and this time, impeller can be because its own inertial continues rotation, if clothing is many, clothing and impeller can produce frictional force, so the winding number of impeller is also fewer thereupon; Opposite when clothing is fewer impeller winding number will by increase.Will cause oscillating current this time, surveys electric installation 16 voltage pulse output data during this time certainly.

In the quadravalence section, judgement in the phase III s3 motor 12 stop whether to produce pulse voltage, if in the phase III, produced pulse voltage really, just enter next step, otherwise will turn back to second stage s2, for the perception of laundry amounts will be restarted motor.Be s4.

If the judged result of quadravalence section s4 is definite, in five-stage, the surplus electricity that is judged as motor 12 has been produced pulse voltage, and the time that first pulse voltage is produced is input to data processing division 15.Be s5.

In the 6th stage, monitor whether the pulse voltage of five-stage s5 becomes 0v, and the time when only recording impulse voltage exists.Be s6.

If in the 6th stage s6, when pulse voltage is not 0v, just get back to the time when continuation calculation pulse voltage exists among the five-stage s5; If in the 6th stage s6, pulse voltage entered for the 7th stage when being 0v.In the 7th stage, just finish the calculation of the pulse voltage time of five-stage s5, and its value is input to 17 li of loggers, calculate the time that pulse voltage is in 0v simultaneously.

In the 8th stage, pulse voltage among the 7th stage s7 is in the no pulse voltage reference value that has configured in the time of 0v and phase I to be compared, if when the time ratio no pulse voltage reference value of no pulse voltage wants little, just get back to the time of calculating other pulse voltage in the quadravalence section again.

When the time that pulse is cut off reaches the no pulse voltage reference value, be judged as surplus electricity and finish.In the 9th stage, calculating in the 7th stage s7, the pulse voltage time on the logger of recording performs calculations and exports.Be s9.

In the tenth stage, first to the end the temporal summation of pulse voltage that the 9th stage of exporting has calculated.Be s10.

In the 11 stage, the time total value of the pulse voltage of exporting among the tenth stage s10 and the laundry amounts perception a reference value that configured in the phase I are compared the laundry amounts of determining to enter sink inside, and determine the amount of the washings that will enter.

When the middle water level of the laundry amounts perception a reference value that the time ratio that this time, determined pulse voltage existed configures is big, just illustrate that laundry amounts is fewer; If the middle water level of the laundry amounts perception a reference value that the time ratio that opposite pulse voltage exists configures is little, but bigger than a reference value of high water level the time, just illustrate that laundry amounts is heavier; If when the high water level of the laundry amounts perception a reference value that the time ratio that pulse voltage exists configures is also little, just illustrate that laundry amounts is very heavy.

Claims

1 one kinds of perception method for clothings quantum of washing machine is characterized in that, it comprises following step: the reference data of the no pulse voltage reference value of (1) pre-set judgement final pulse voltage and judgement laundry amounts; (2) after motor [12] is stopped power supply, calculate that surplus electricity produced from first to the last pulse voltage time by motor [12]; (3) pulse voltage time that obtains and the reference data that configures are compared, judge the scope and the load of laundry amounts.

2 perception method for clothings quantum according to claim 1, it is characterized in that, after described motor was stopped power supply, calculate by what the surplus electricity of motor was produced and can adopt following several stages since first to a last pulse voltage time: the phase I was to calculate the pulse voltage time from first pulse voltage; Second stage is to judge whether pulse voltage disappears, and judges whether the pulse voltage dwell time reaches the no pulse voltage reference value; Phase III is that pulse voltage disappears in second stage, and when having reached no pulse voltage, finishes the calculation of pulse voltage and the summation of voltage pulse output time.

The cognitive method of 3 laundry amounts according to claim 1 is characterized in that, described the pulse voltage time that obtains and the reference data that configures is compared, and judges that the scope of laundry amounts and load can adopt following three phases:

Phase I is that the middle water level of the laundry amounts perception a reference value that configures of time ratio that determined pulse voltage exists is big, illustrates that laundry amounts is fewer; Second stage is if the middle water level of the laundry amounts perception a reference value that the time ratio that pulse voltage exists configures is little, but bigger than a reference value of high water level, illustrates that laundry amounts is heavier; Phase III is if the high water level of the laundry amounts perception a reference value that the time ratio that pulse voltage exists configures is also little, illustrates that laundry amounts is very heavy.