CN100495449C - Interaction type dosage calibrating device of hot-cold drink automatic vending machine - Google Patents

Abstract

The invention is specially related to interactive type device for calibrating ingredients of hot and cold drink dispenser capable of preparing formulary of beverage rapidly according to normal quantitative requirement. The device includes measuring balance, microprocessor, drive circuit, man computer dialogue input-output unit, feeding mechanism, and dc motor. The microprocessor is connected to the man computer dialogue unit. The dc motor is cooperated to the feeding mechanism. Characters are that the output end of the microprocessor is connected to the drive circuit, and the execution circuit is connected to the dc motor. One end of the balance is connected to the input end of the microprocessor. Based on embedded computation method and working procedure, the microprocessor determines suitable speed control parameter for motor and time control parameter. Features are simple structure, easy of use, ingredient in high precision, and fast speed.

Description

The interaction type dosage calibrating device of hot-cold drink automatic vending machine

Technical field

The present invention relates to a kind of hot-cold drink automatic vending machine technical field, particularly relate to a kind of interaction type dosage calibrating device that can require the hot-cold drink automatic vending machine of quick synthetic beverage prescription according to standard quantitative.

Background technology

Developing rapidly of science and technology makes the modern automation vending system complicated day by day.Some high-grade automatic vending machines such as Fresh Ground Coffee machine, hot cold drink machine etc. not only will be finished automatic sale and settlement operations, but also will be according to client's individual demand, adopt certain raw material and prescription to be client's processing, making beverage in the short as far as possible time, this process is equivalent to the product processing and making process of mechanized production system.This series products at home and abroad is popular, and the very big market demand and development prospect are arranged.

Charge Mixture Control is an important step in the hot-cold drink automatic vending machine system work process.The quality and the mouthfeel that can accurate dosing not only be related to beverage, and cost of products also had certain influence.It is too much or very few to add raw material, all can make the mouthfeel variation, and when the adding raw material is too much, cost is increased.

Existing hot-cold drink automatic vending machine adopts a model machine by debugging repeatedly in a large number, determines suitable discharging timing controlled time span, and with this as the controlled variable of machine by the gross.Not only efficient is low to demarcate quantitative methods like this, and, can only satisfy specific model machine and specific raw material.Different machines has different time lag characteristics and nonlinear characteristic, and when drink variety changed, composition of raw materials also will change, and different raw material mechanical properties is different, and all of these factors taken together all can influence load.Therefore, different machines is adopted same fixing discharging timing controlled time span, can cause very big batching error.Yet adopt existing scaling method to demarcate to each machine, time and effort consuming, feasibility is relatively poor in actual applications, thereby can't be widely used.

Summary of the invention

The object of the present invention is to provide a kind of interaction type dosage calibrating device of simple in structure, easy to use, hot-cold drink automatic vending machine that proportioning accuracy is high.

The objective of the invention is to adopt such technical solution to realize: it comprises the high-precision measuring balance, microprocessor, executive circuit, the man-machine conversation input-output unit, feed mechanism and direct current generator, described microprocessor and man-machine conversation input-output unit link, described direct current generator matches with feed mechanism, the output terminal of described microprocessor is connected with executive circuit, executive circuit and direct current generator join, one end of described balance can join with the input end of microprocessor, it is characterized in that described high-precision measuring balance is made of support and lever, one end of described lever is provided with the microswitch contact, this microswitch contact can be connected with microswitch electricity, one end and the digital power loop of described microswitch join, and the input end of its other end and pull-up resistor and microprocessor also connects.

Because the present invention's version of adopting presetting apparatus to match with mechanical hook-up, and mechanical hook-up is prepared the time of various raw materials and is controlled by microprocessor, thus can realize fast, accurately the effect of preparing burden is demarcated in preparation.

Below in conjunction with the drawings and specific embodiments, the invention will be further described:

Description of drawings

Fig. 1 is a structural principle synoptic diagram of the present invention

Fig. 2 is a miniature processor circuit block scheme of the present invention

Drawing reference numeral explanation: 1-digital power, 2-pull-up resistor, 3-microswitch, 4-digital power loop, 5-microswitch contact, 6-counterpoise, 7-lever, 8-support, 9-blanking cup, 10-spiral pusher, 11---driving power ground connection, 12-direct current generator, 13-stirring wheel, 14-raw material, 15-material storage tube, 16-executive circuit, 17-microprocessor, 18-man-machine conversation input-output unit, 19-discharging opening, 20-ram in slice, Flash in 21-sheet, 22-PWM module, 23-vectorial interruptable controller, 24-32 ARM kernels, 25-compare/catch timer, 26-catch input channel, 27-relatively output channels, 28-PWM output channel.

Embodiment

With reference to Fig. 1: the present invention includes the high-precision measuring balance, microprocessor 17, executive circuit 16, man-machine conversation input-output unit 18, feed mechanism and direct current generator 12, described microprocessor 17 links with man-machine conversation input-output unit 18, described direct current generator 12 matches with feed mechanism, the output terminal of described microprocessor 17 is connected with executive circuit 16, executive circuit 16 joins with direct current generator 12, one end of described balance can join with the input end of microprocessor 17, executive circuit 16 joins with direct current generator 12, one end of described balance is equipped with microswitch contact 5, and microswitch contact 5 is connected with the input end of microprocessor 17; Described high-precision measuring balance is made of support 8 and lever 7, one end of described lever 7 is provided with microswitch contact 5, this microswitch contact 5 can be connected with microswitch 3 electricity, one end and the digital power loop 4 of described microswitch 3 join, and the input end of its other end and pull-up resistor 2 and microprocessor 17 also connects; Described microswitch contact 5 can join through the input end of microswitch 3 with microprocessor 17; Be placed with counterpoise 6 and blanking cup 9 on lever 7, counterpoise 6 and blanking cup 9 lay respectively at the both sides of support 8 fulcrums, and apart from support 8 fulcrums certain spacing are arranged.

Described man-machine conversation input-output unit 18 is made of input keyboard and display, and input keyboard and display are buied by market, and joins with microprocessor 17 in known manner.

Described feed mechanism is by material storage tube 15, direct current generator 12, and stirring wheel 13 and spiral pusher 10 are formed; Described stirring wheel 13 and spiral pusher 10 are arranged in the material storage tube 15, described material storage tube is provided with discharging opening 19, this blanking port 19 is corresponding with the blanking cup 9 of below, the outside of described material storage tube is provided with direct current generator 12, this direct current generator 12 links with spiral pusher 10, described stirring wheel 13 adopts known mode to drive, and does not give unnecessary details at this.

In Fig. 2, described microprocessor is mainly by 32 ARM kernels 24, Flash storer 21 in ram in slice storer 20, the sheet, 2 tunnel 32 bit strips are caught the timer 25 of input channel 26, relatively parts such as output channel 27, vectorial interruptable controller 23 and pulsewidth scheduling PWM module 22 are formed, it is the very strong microprocessor of function of peripheral hardware in a strap, by PLL frequency multiplication in the sheet, can realize the CPU operating frequency of 60MHz, described microprocessor 17 has 64 pins and 46 universaling I/O ports.Its starting code ARM assembly instruction and C language compilation, application program is all worked out with the C language; It is corresponding that the required time of batching is demarcated in the set discharging time parameter of described timer 25 and preparation, and the required time of batching is demarcated in the respectively corresponding different material preparation of the different discharging time parameters that are provided with in timer 25; It is to adopt following method to realize that dosage calibrating is set:

(1) determines by experimental data and error analysis and anticipate time control time span parameter and demarcate fast;

(2) set the drive motor control PWM dutycycle of suitable dosage calibrating, and, represent that as 2 control accuracies are in ± 2% according to accuracy requirement selected number between 1-10;

(3) according to the minimum value w of load _MinWith maximal value w _Max, equally spaced definite M load (M=5～7) obtains the corresponding timing controlled discharging time parameter of this M value successively;

The relational expression of load w and timing controlled time interval t:

$w\left(t\right)=\left\{\begin{array}{cc}\mathrm{kt}+b+e\left(t\right)+n\left(t\right),& t>t_d\\ 0,& t\≤t_d\end{array}\right.$

In the formula, k, b representation theory model parameter (k〉0, b＜0), e (t) is the nonlinearity erron item, n (t) is the random noise item, t _dThe Dead Time that causes for dynamo-electric inertia and gap etc.

(4) survey check with theoretical model, obtain the timing controlled time;

(5) adopt the non-linear interpolation computing method, the timing controlled time that step (4) obtains is revised and compensates, the required time parameter of batching is demarcated in controlled preparation,

(6) correlation parameter of preparing burden is demarcated in the preparation that above-mentioned steps obtained, be compiled into the working routine of microprocessor 17 with the C language.

When the present invention uses, the keyboard of operation man-machine conversation input-output unit 18, can on display, demonstrate corresponding content of operation, under the programmed control of microprocessor 17, automatically finish direct current generator 12 and drive 10 rotations of spiral pusher, stirring wheel 13 stirs, batching falls into blanking cup 9 from discharging opening 19, when treating that batching in the blanking cup 9 reaches scalar quantity, the microswitch contact 5 of lever 7 one ends combines with microswitch, make the input end and the digital power loop 4 of microprocessor 17 join, then microprocessor turn-offs executive circuit 16, thereby make direct current generator 12 stop operating, material storage tube 15 stops blanking, after the blanking cup that fills batching is taken away, microswitch contact 5 separates with microswitch 3, microprocessor 17 is in armed state, and after the new discharging information of operation keyboard input, microprocessor 17 is carried out corresponding dosage calibrating task according to selected dose type.

Claims (2)

1, the interaction type dosage calibrating device of hot-cold drink automatic vending machine, comprise the high-precision measuring balance, microprocessor, executive circuit, the man-machine conversation input-output unit, feed mechanism and direct current generator, described microprocessor and man-machine conversation input-output unit link, described direct current generator matches with feed mechanism, the output terminal of described microprocessor is connected with executive circuit, executive circuit and direct current generator join, one end of described balance can join with the input end of microprocessor, it is characterized in that described high-precision measuring balance is made of support and lever, one end of described lever is provided with the microswitch contact, this microswitch contact can be connected with microswitch electricity, one end and the digital power loop of described microswitch join, and the input end of its other end and pull-up resistor and microprocessor also connects.

2, the interaction type dosage calibrating device of hot-cold drink automatic vending machine according to claim 1, it is characterized in that described microprocessor is mainly by 32 ARM kernels, the ram in slice storer, Flash storer in the sheet, 2 tunnel 32 bit timing devices, parts such as vector interruptable controller and PWM module are formed, it is the microprocessor of peripheral hardware in a strap, by PLL frequency multiplication in the sheet, realize the CPU operating frequency of 60MHz, have 64 pins, reach 46 universaling I/O ports, the starting code of described microprocessor ARM assembly instruction and C language compilation, application program is all worked out with the C language.

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