CN111543870A

CN111543870A - Spoon, dish price scoring method matched with spoon, POS (point of sale) machine and selling system

Info

Publication number: CN111543870A
Application number: CN202010347626.5A
Authority: CN
Inventors: 张魁; 何黎明; 向金鑫; 苏旭彬; 余航
Original assignee: Xiangtan University
Current assignee: Xiangtan University
Priority date: 2020-04-28
Filing date: 2020-04-28
Publication date: 2020-08-18

Abstract

The invention discloses a spoon which comprises a weighing component, a control module, an angle sensor and a data wireless transmission component, wherein the weighing component is arranged on the spoon body; the strain gauge in the weighing assembly forms a test bridge circuit for converting a strain value caused by the weight of the dishes into an output voltage; the angle sensor is used for measuring the included angle between the spoon handle and the horizontal plane; the control module is used for storing basic information of the dishes at least including the unit price of the dishes, acquiring and processing the output voltage signal, and acquiring and storing vending information of the dishes at least including the total price of the dishes; the data wireless transmission assembly comprises an electronic tag and is used for interacting information with the POS machine, the terminal peripheral equipment, the dish electronic tag and the like, so that the automatic setting of unit price, weighing, pricing and price-dividing of dishes is realized, and the selling efficiency and the settlement precision of the dishes are improved; in the selling system, the server terminal can analyze and obtain the selling process data according to the selling information of the dishes, and provides basic data for the development of operation management activities in mass-selling catering places.

Description

Spoon, dish price scoring method matched with spoon, POS (point of sale) machine and selling system

Technical Field

The invention relates to the field of catering tools, in particular to a spoon, a dish price dividing method, a POS (point of sale) machine and a selling system which are matched with the spoon, and particularly relates to a spoon which integrates functions of setting unit price of dishes, weighing dishes, calculating price of dishes and dividing price of dishes into a whole, and a dish price dividing method, a POS machine and a selling system which are matched with the spoon.

Background

Every business hour of a vending type catering place such as a dining hall and the like, diners can specify the varieties and the weight of dishes (including foods such as meal, cakes, fruits, porridge, soup and the like) under each show window according to the taste preferences of the diners, then the specified dishes are contained out of the dish containing containers (such as a dish basin, a heat preservation trough and the like) by using a spoon and stored into dinner plates of the diners, finally, the corresponding total price of the dishes (hereinafter referred to as dish price marking) is manually input on an operation panel of an IC card POS machine (hereinafter referred to as POS machine) by the staff according to the specified unit price and the weight of the dishes, and then the diners approach the meal cards or user terminals to the POS machine to conduct final card swiping settlement (namely dish settlement). In the process of selling the aforementioned vegetables, the following limitations exist:

1) when the staff utilizes the ladle to contain the dishes according to the mode of single quota, the weight of each dish is greatly deviated due to subjective deviation, personal preference or emotional fluctuation, the interests of diners are damaged (the weight of the contained dishes is too little), the interests of canteen operators are damaged (the weight of the contained dishes is too much), and the phenomenon of wasting the dishes (the diners cannot eat up) is caused.

2) When the staff calculates the total price of the dishes (referred to as dish pricing hereinafter) according to the weight or the parts, the dish weighing and the dish pricing are required to be carried out manually, the operation is complicated and inconvenient, and human errors exist; in addition, electronic auxiliary equipment such as an electronic scale and a calculator is needed in the process, a large amount of grease and soup exists in the shop window for selling the dish in the canteen, and the electronic auxiliary equipment is easily corroded by the splashed soup, so that the service life is shortened, the use precision is reduced and the like; not to neglect, the auxiliary electronic equipment is operated by a worker by touching the auxiliary electronic equipment, and problems of cleanness, sanitation and the like are also caused.

3) No matter which kind of mode splendid attire dish is adopted to the staff, all need carry out the dish pricing on the POS machine manually, have the inconvenient, easy maloperation of operation, corrode POS machine and unhygienic scheduling problem of operation equally.

4) No matter which type of mode is adopted to contain dishes, the staff needs to acquire the information of the unit price of the dishes (the unit price of the dishes is set by quote) according to the selection of diners, and the problems of forgetting, mistaking or untimely updating of the unit price exist.

In addition, the staff sell the dishes by using the spoon is the most key and the most basic loop in the operation management activities carried out in the mass-selling catering places, and the economic benefit and the operational order of the mass-selling catering places are seriously influenced by the selling condition of the dishes. However, since the common spoon is used for selling the dishes, the selling process data such as selling efficiency (time taken from the time of ordering the dishes to the time of completing the selling of the dishes), selling deviation (an error between the total selling amount of the dishes and the actual selling amount is expected), selling speed of the dishes (selling completion time of the dishes), and the surplus of the dishes cannot be monitored in real time, and the selling link of the dishes cannot be naturally incorporated into a management system of a bulk catering place, so that the internet of things management system is not concerned, and the management and management activities are effectively managed based on a big data analysis technology.

At present, to the vegetable vending problem in the volume-selling catering places such as dining rooms, it is urgent to provide a ladle that is convenient and efficient to operate, simple in structure, low cost, and capable of wirelessly interacting data (to meet the networking and big data analysis requirements of the internet of things), and that integrates the functions of setting the unit price of the vegetable, weighing the vegetable, calculating the price of the vegetable and dividing the price of the vegetable into a whole.

Disclosure of Invention

In order to solve the defects of the prior art, the invention provides a spoon, which comprises a spoon head, a spoon handle, a weighing assembly, a control module and a power supply module, and is characterized in that:

the utility model provides a spoon, includes spoon head, spoon handle, subassembly, control module, power module of weighing, its characterized in that:

one end of the spoon handle is connected with a spoon head;

the spoon head is provided with a volume cavity for containing dishes;

the weighing assembly comprises a strain gauge; the strain gauge is arranged on the mechanical strain surface of the spoon handle; the strain gauge consists of a testing bridge circuit which is used for converting a strain value of the spoon handle caused by the weight of the dishes contained in the spoon head into an output voltage U of the testing bridge circuit;

the control module is respectively electrically connected with the power supply module and the weighing component; the control module is used for storing basic information of the dishes at least including the unit price of the dishes and acquiring and processing the output voltage signal so as to obtain and store selling information of the dishes at least including the total price of the dishes; the basic information of the dish and the vending information of the dish are collectively called as dish information;

the power module is used for respectively supplying power to the control module and the weighing component.

Preferably, the spoon handle comprises a first spoon handle and a second spoon handle; an elastic deformation body is connected between the first spoon handle and the second spoon handle; the strain foil is pasted on the mechanical strain surface of the elastic deformation body.

Preferably, the elastically deformable body has a deformable arch; the deformation arch comprises a first deformation arch and a second deformation arch, the first deformation arch and the second deformation arch are communicated through a deformation arch transition area, and the strain gauge is arranged on a mechanical strain surface of the deformation arch; the strain gage constitutes a full bridge test bridge.

Preferably, the invention also comprises an angle sensor used for measuring the included angle alpha between the spoon handle and the horizontal plane; the control module is also used for collecting and processing the output signal of the angle sensor; the power module also supplies power to the angle sensor.

Preferably, the invention also comprises a data wireless transmission component for realizing the information interaction between the control module and the outside.

Preferably, the data wireless transmission component comprises an electronic tag; an RFID antenna of the electronic tag is arranged at the bottom of the spoon head.

Preferably, the invention also comprises a button switch component and a feedback prompt component.

The POS machine matched with the spoon is characterized in that: the RFID reader-writer is included; the RFID reader-writer is used for the spoon interaction information to complete price drawing of dishes.

A vending system, comprising: the invention also discloses a spoon, a POS machine, an electronic tag reader-writer, a dish electronic tag and a terminal peripheral; the terminal peripheral comprises a management terminal and a user terminal; the dish electronic tag is used for storing basic information of the dishes; the electronic tag reader-writer is used for acquiring basic information of dishes from the management terminal, writing the basic information into the electronic tags of the dishes and accessing information stored in the electronic tags of the dishes; the diner can enable the user terminal to be close to the dish electronic tag so as to read information stored in the dish electronic tag; the spoon can read basic information of dishes stored in the dish electronic tag; the spoon and the POS machine provided by the invention interact with the dish vending information to finish dish pricing; diners perform information interaction with the POS machine through the user terminal and/or the meal card to complete dish settlement; diners can obtain part of dish selling information permitted by user authority through the user terminal; the invention relates to a POS machine and management terminal interactive dish vending information; and the management terminal analyzes and obtains the vending process data according to the dish vending information.

The invention relates to a POS machine and management terminal interactive dish vending information; and the management terminal further analyzes and obtains vending process data according to the dish vending information.

The dish price scoring method matched with the spoon and the POS machine is characterized in that: the method comprises the following steps:

the method comprises the following steps: before the worker takes dishes, the unit price of the dishes is set by using the spoon;

step two: a worker uses the spoon to order dishes and automatically finishes dish weighing and dish pricing;

step three: the spoon and the POS machine interact with dish vending information to automatically complete dish pricing.

The invention relates to a spoon, a dish price scoring method matched with the spoon, a POS (point of sale) machine and a selling system, which have the following advantages compared with the prior art:

1. based on a strain test technology, the aims of automatic weighing and pricing of the dishes are achieved by measuring a strain value of the spoon handle caused by the weight of the dishes after the spoon head contains the dishes; meanwhile, the data wireless transmission component is adopted, particularly the electronic tag arranged on the spoon head is adopted, so that the quick interaction of the selling information of the dishes at least including the total price of the dishes with the POS machine is realized, and the price of the dishes can be automatically drawn; in addition, the unit price of the dishes can be automatically set in a way that the spoon head stuck with the electronic tag is close to the electronic tag of the dishes; therefore, the spoon integrates the functions of setting the unit price of the dish, weighing the dish, pricing the dish and pricing the dish, so that the selling efficiency and the settlement precision of the dish are improved;

2. according to the spoon, the angle sensor for detecting the included angle alpha of the spoon handle relative to the horizontal plane is arranged on the spoon handle, so that the weighing precision of dishes can be improved, and the practicability is high;

3. the strain gauge, the angle sensor and the single chip microcomputer (as a control module) adopted in the spoon are low in price, and can be embedded into the hollow rod body of the spoon handle, so that the shape of the spoon is the same as that of a common spoon; in addition, the spoon handle adopts a half-split structure, so that the structure is simple, and the maintenance and the assembly are convenient;

4. the POS machine is provided with the RFID reader-writer which can quickly interact with the spoon to complete the price scoring of the dishes, so that the problems of health, sanitation, misoperation, corrosion and aging of the POS machine and the like caused by the fact that the hands of workers touch the operation panel of the POS machine are solved;

5. the vending system has the following advantages:

firstly, a dish selling link is brought into a management system of a mass-selling catering place; the terminal peripheral (such as a management terminal) analyzes and obtains vending process data according to the dish vending information, and provides basic data for developing operation management activities in a quantity-selling catering place;

secondly, diners acquire dish information through the user terminal, and timely master and manage the dish settlement condition and the diet health condition of the diners;

and thirdly, the requirements of networking and big data analysis of the future Internet of things can be further met.

6. By utilizing the dish price scoring method matched with the spoon, dish settlement can be completed quickly, so that the queuing time of diners is shortened.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a front cross-sectional view of a scoop of the present invention;

FIG. 2 is a top view of the scoop shown in FIG. 1;

FIG. 3 is a partial bottom view taken along line A of FIG. 1;

FIG. 4 is a graph showing the stress analysis of the spoon according to the present invention after the spoon is filled with dishes;

FIG. 5 is a flow chart of a dish order;

FIG. 6 is a schematic partial exploded view at I of FIG. 1;

FIG. 7 is an enlarged view of a portion of the weighing assembly of FIG. 6;

FIG. 8 is a perspective view of the spoon handle placement stand;

FIG. 9 is a cross-sectional view of a preferred spoon handle placement stand;

FIG. 10 is a system diagram illustrating a seventh embodiment of a spoon in accordance with the present invention and a first embodiment of a POS machine in accordance with the present invention;

FIG. 11 is a system diagram of a first embodiment of a vending system according to the present invention (arrows indicate signal flow directions);

reference numerals:

the following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to the embodiments thereof which are illustrated in the appended drawings. It should be noted that the embodiments of the present invention and features of the embodiments may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present invention, and the described embodiments are merely a subset of the embodiments of the present invention, rather than a complete embodiment. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In various embodiments of the present invention, for convenience in description and not in limitation, the term "coupled" as used in the specification and claims of the present application is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

The first embodiment of the spoon of the invention:

as shown in fig. 1 and 2, a spoon comprises a spoon head (1), a spoon handle (2), a weighing assembly (4), a control module (6) and a power supply module (10), and is characterized in that:

one end of the spoon handle (2) is connected with a spoon head (1);

the spoon head (1) is provided with a volume cavity for containing dishes;

the weighing assembly (4) comprises a strain gauge; the strain gauge is arranged on the mechanical strain surface of the spoon handle (2); the strain gauge consists of a test bridge circuit, and is used for converting a strain value of the spoon handle (2) caused by the weight of the dishes contained in the spoon head (1) into an output voltage U of the test bridge circuit;

the control module (6) is respectively and electrically connected with the power module (10) and the weighing component (4); the control module (6) is generally developed on the basis of a single chip microcomputer, and is used for storing basic information of the dishes at least including the unit price of the dishes (including the unit price of the dishes, the name of the dishes, nutritional ingredients, heat, eating efficacy, contraindications, dish collocation recommendation, a cooking method and the like), and simultaneously is used for acquiring and processing an output voltage signal so as to obtain and store selling information of the dishes at least including the total price of the dishes (including the balance of the dishes, the weight of the contained dishes (referred to as the weight of the dishes) m, the total price of the contained dishes (referred to as the total price of the dishes), the heat of the contained dishes (referred to as the heat of the dishes), selling times, time consumed from the time of serving the dishes to the price of the dishes, the total sales of the dishes, whether the selling price of the dishes is finished, and the like); the basic information of the dish and the vending information of the dish are collectively called as dish information;

the power supply module (10) is used for respectively supplying power to the control module (6) and the weighing component (4).

The invention relates to a spoon, which comprises the following specific embodiments:

in order to facilitate the collection of strain data of the spoon handle (2) and improve the test precision, on the basis of the first specific embodiment of the spoon, a second specific embodiment is obtained by improvement, and the spoon is characterized in that as shown in fig. 1 and 2, the spoon handle (2) comprises a first spoon handle (21) and a second spoon handle (22); an elastic deformation body (43) is connected between the first spoon handle (21) and the second spoon handle (22); the strain gauge is adhered to the mechanical strain surface of the elastic deformation body (43).

More specifically, in order to reduce weight, in this example, as shown in fig. 6, the first spoon handle (21) is a hollow rod body with a square cross section; in order to simplify the preparation process and ensure that the integrally assembled spoon handle (2) has better consistency, the second spoon handle (22) is a hollow rod body with a square section, and the section size of the second spoon handle is the same as that of the first spoon handle (21); the power module (10) is arranged in the rod body of the second spoon handle (22).

More specifically, in this embodiment, as shown in fig. 6, in order to improve the manufacturing and assembling manufacturability and meet the requirement of beautiful appearance, protruding structures with square cross sections are symmetrically extended from two ends of the elastic deformation body (43) close to the first spoon handle (21) and the second spoon handle (22); the protruding structures are correspondingly inserted into the hollow rod bodies of the first spoon handle (21) and the second spoon handle (22) which are opposite to the protruding structures; the elastic deformation body (43) is fastened with the first spoon handle (21) and the second spoon handle (22) in a thread mode respectively. More specifically, in the embodiment, the bolt (7) can movably penetrate through the upper surface of the spoon handle (2), the elastic deformation body (43) and the lower surface of the spoon handle (2) and is fastened by the nut (8), so that the spoon head (1), the first spoon handle (21), the elastic deformation body (43) and the second spoon handle (22) are sequentially arranged from bottom to top and are fixedly connected into a spoon-shaped assembly body, and a middle symmetrical plane perpendicular to the axis of the circular through hole on the elastic deformation body (43) is coplanar with the middle plane of the spoon-shaped assembly body.

The third specific embodiment of the spoon of the invention:

in order to improve the strain testing precision, on the basis of the second embodiment, a third embodiment is obtained through improvement, as shown in fig. 6, and the third embodiment is characterized in that the elastic deformation body (43) is provided with a deformation arch; the deformation arch comprises a first deformation arch (41) and a second deformation arch (42), and the first deformation arch (41) is communicated with the second deformation arch (42) through a deformation arch transition area; the strain gauge is arranged on a mechanical strain surface of the deformation arch.

In this example, the first deformation arch (41) and the second deformation arch (42) are arranged at the central part of the side surface of the elastic deformation body (43); the radius R of the first deformation arch (41) is the same as that of the second deformation arch (42), and the axial distance X between the first deformation arch (41) and the second deformation arch (42) meets the condition that R < X < 2R.

More specifically, in this example, as shown in fig. 7, strain gauges including a strain gauge I (44), a strain gauge II (45), a strain gauge III (46), and a strain gauge IV (47) are bonded to the mechanical strain surfaces of the upper and lower surfaces of the elastic deformation body (43), wherein: the strain gauge I (44) is arranged on a mechanical strain surface right above the first deformation arch (41), and the strain gauge IV (47) is arranged on a mechanical strain surface right above the second deformation arch (42); the strain gauge II (45) is arranged on a mechanical strain surface right below the deformation arch I (41), and the strain gauge III (46) is arranged on a mechanical strain surface right below the deformation arch II (42). The strain gauges I (44) to IV (47) form a full bridge test bridge circuit to improve nonlinear error and output sensitivity.

when a worker weighs dishes, the spoon handle (2) and a horizontal plane form an included angle alpha shown in fig. 4; when the included angle alpha is kept relatively stable, the control module (6) can calculate the weight m of the dishes according to a related formula. Specifically, the angle α is recommended to be [40 degrees, 50 degrees ] in consideration of ergonomic mechanics; in a preferred embodiment, the angle α is preferably 45 degrees.

The invention can also be used with a spoon handle placing bracket as shown in figure 8; when the spoon handle (2) is placed on the spoon handle placing bracket, the spoon handle (2) forms a given included angle alpha with the horizontal plane.

More specifically, the cross section of the spoon handle placing bracket is shown in fig. 9; therefore, the spoon handle placing support is provided with a placing support surface which forms a given included angle alpha with the horizontal plane and is used for supporting the spoon handle, and a limiting weighing surface which is opposite to and parallel to the placing support surface; when the invention is idle, the spoon handle (2) can be placed on the placing support surface; when dishes are weighed, the spoon handle (2) can be lifted from the placing support surface to be just attached to the limiting weighing surface; it is worth explaining that the spoon can be used for weighing dishes within the time period from the lifting of the spoon handle (2) to the just fitting of the limiting weighing surface.

Preferably, in order to eliminate the influence of the fluctuation of the included angle alpha on the measurement precision of the weight m of the dishes, the invention also comprises an angle sensor (3), wherein the angle sensor (3) is arranged on the back surface of the first spoon handle (21) and is used for measuring the included angle alpha between the spoon handle (2) and the horizontal plane, as shown in fig. 4; the control module (6) is also used for acquiring and processing the output signal of the angle sensor (3); the power supply module (10) also supplies power to the angle sensor (3). More specifically, in this example, as shown in fig. 1, the angle sensor (3) is arranged on the back of the first spoon handle (21), and when the included angle α is in the preferred range [40 degrees, 50 degrees ], the operator is reminded of reaching the preferred angle by means of an indicator lamp, a buzzer, a vibrating motor and the like, and the weighing of the weight m of the dish can be started (or automatically) started.

As mentioned above, the strain gauge is used for measuring the strain value on the spoon handle (2), preferably on the elastic deformation body (43), under the action of the gravity G generated by the weight m of the dishes when the volume cavity of the spoon head (1) is filled with the dishes. Assuming that the spoon handle (2) and the horizontal plane have an included angle alpha as shown in fig. 4, the component force N applied to the spoon handle (2) and the gravity G of the dishes can be represented by the following formula:

wherein g is the acceleration of gravity.

The strain value generated by bending the elastically deformable body (43) by a component force N in a direction perpendicular to the axis of the spoon handle (2) on the middle surface of the spoon-shaped assembly is as shown in fig. 4. According to the strain gauge testing principle, the elastic deformation body (43) can be approximately regarded as a cantilever beam with one end fixed and the other end pressed.

According to the strain test technology, the output voltage U and the strain value satisfy:

U＝KU₀(2)

wherein K is the sensitivity coefficient, U₀Inputting a voltage for the bridge;

the bending moment calculation method of the reference cantilever beam can establish the relationship between the component force N and the strain value:

wherein W is the bending modulus, E is the elastic modulus, and x is the distance from the stress point to the strain gauge;

the combined type (1) to (3) can obtain:

m＝aU (4)

wherein a is a constant, and a is WE/(gxKU)₀cosα)。

As can be seen from the formula (4): the weight m of the dishes is in direct proportion to the output voltage U. Under a given included angle alpha, the relation between the weight m of the dishes and the output voltage U of the weighing component (4) can be obtained through a calibration test of a physical model; during testing, weights with given weight can be placed in the volume cavity of the spoon head (1), and a calibration relation curve of the weight m of the dishes and the output voltage U of the weighing component (4) can be obtained more accurately by accumulating the weights one by one;

in this example, the output voltage V of the angle sensor (3) can be converted into an arcsine conversion type as shown in the following equation (5)_outPrecisely into included angle α:

in the formula, V₀Is the output of the angle sensor (3) at the 0-degree inclined position, namely the nominal detuning value, and the angle sensor is in the horizontal state at the moment; s is the sensitivity of the angle sensor (3).

In order to save cost, the angle sensor (3) adopts an SCA61T-FA1H1G type single-shaft included angle sensor; at this time, the nominal detuning value is 2.5V, and S is 2V/g; the XOY plane of unipolar contained angle sensor and the back laminating of first spoon handle (21), the mid-plane and the YOZ plane coincidence of spoon form assembly body.

It is worth supplementing to explain that, in order to prevent water, oil and the like from damaging the electronic components inside the invention, the weighing component (4) and the angle sensor (3) are coated with insulating sealant; the joints of the weighing component (4) and the first spoon handle (21) and the second spoon handle (22) are sealed and insulated; in order to facilitate the installation of corresponding electronic components in the spoon handle (2), the first spoon handle (21) and the second spoon handle (22) both adopt a split structure; the first spoon handle (21), the second spoon handle (22) and the weighing component (4) are protected by a shell.

in order to facilitate mutual information, on the basis of the fourth specific embodiment, the invention further comprises a data wireless transmission component (such as an infrared module, a bluetooth module, a WiFi module, an RFID module, an NFC module, and the like) for realizing interaction between the control module (6) and the outside for information such as dish information, that is, the control module can not only send the dish information to the outside through the data wireless transmission component, but also receive the dish information returned by the data wireless transmission component; the information interaction objects comprise terminal peripherals (such as a user terminal and a management terminal), equipment with a data wireless transmission component, such as a POS machine, an electronic tag (5), an NFC tag and the like.

on the basis of the fifth embodiment, the data wireless transmission component comprises an electronic tag (5) which is used for interacting the dish selling information at least comprising the total price of the dish to the POS machine so as to automatically complete the dish price dividing; the electronic tag (5) is adhered to the outer wall of the spoon head; in this example, as shown in fig. 3, a groove is formed in the outer wall of the bottom of the spoon head (1) for placing the electronic tag (5); the electronic tag (5) is packaged in the groove by means of a cover plate (11) made of food-grade nonmetal materials such as waterproof glue, plastics and the like; the electronic tag (5) comprises an RFID antenna (51) and an RFID electronic chip (52).

Specifically, the electronic tag (5) adopts a semi-passive rewritable electronic tag, and the working mode is full duplex; the RFID antenna (51) is used for transmitting the total price of the dishes to the RFID reader-writer of the POS machine and receiving information whether the price of the dishes is drawn or not fed back by the RFID reader-writer (so as to remind a worker that the price of the dishes is drawn successfully); the RFID electronic chip (52) is used for storing information required for interaction with the RFID reader-writer; the RFID antenna (51) is electrically connected with the RFID electronic chip (52); the RFID electronic chip (52) is arranged at the bottom of the first spoon handle (21), and the RFID antenna (51) is arranged at the bottom of the spoon head (1). Because the data stored in the RFID electronic chip (52) is less, the RFID antenna (51) has shorter reading distance, and the working frequency range of the RFID system is 30 KHZ-300 KHZ. In order to prevent the electronic tag (5) from being interfered in the working process, the spoon head (1) and the spoon handle (2) are made of acrylic.

for the convenience of operation, the invention also comprises a button switch component (9) and a feedback prompting component (such as a buzzer, a signal lamp and a vibrating motor for alarming and reminding), and the system block diagram is shown in fig. 10; specifically, in this example, the push button switch assembly (9) includes a reset-to-zero button (91), a vegetable unit-price button (92), and a meat unit-price button (93) as shown in fig. 2; as shown in fig. 2, in this example, a meat unit button (93), a vegetable unit button (92) and a reset-to-zero button (91) are arranged on the front surface of the first spoon handle (22) from bottom to top in sequence; in order to facilitate manual operation, the button switch assembly (9) can be arranged on the front surface of the second spoon handle (22) and is positioned above the second spoon handle (11); more specifically, the button switch assembly (9) further comprises a locking button for locking the total price of the dishes after weighing; when the work of dish unit price setting, dish weighing, dish price dividing and the like is finished, or the system is abnormal and fails, the feedback prompt component works.

More specifically, in this example, as shown in fig. 10, the power supply module (10) is used for supplying power to the electric elements such as the control module (6), the weighing component (4), the angle sensor (3), the data wireless transmission component, the button switch component (9), and the feedback prompt component, and can be charged; control module (6) are connected with observing and controling the component electricity such as subassembly (4), angle sensor, data wireless transmission subassembly, button switch subassembly (9) and feedback suggestion subassembly of weighing respectively, and mainly used signal acquisition handles, information storage and work such as reading, instruction transmission and power management specifically include:

1) and (5) signal acquisition and processing. Such as: collecting an output signal of the angle sensor (3) and converting the output signal into an included angle alpha; receiving the output voltage U of the test bridge circuit, and calculating the weight m of the dishes by combining the included angle alpha; receiving a level signal input by the button switch assembly (9) and responding (such as weighing and peeling, dish weighing, dish pricing and the like);

2) and storing and writing signals. Such as: storing the dish information in a memory; writing the total price of the dishes into an RFID electronic chip (52) of the electronic tag (5);

3) and sending the instruction. Such as: sending a signal erasing instruction to an RFID electronic chip (52) of the electronic tag (5); according to a signal for completing the price dividing of dishes fed back by an RFID electronic chip (52) of the electronic tag (5), sending a working instruction to a feedback prompt component;

4) and managing a power supply to realize low-power-consumption operation of the seventh embodiment of the invention.

The invention relates to a POS machine, which comprises the following specific embodiments:

the POS machine used in cooperation with the fifth to seventh specific embodiments of the spoon comprises a microprocessor, an induction type card reader, a radio frequency identification chip, a two-dimensional code scanner, an indicator light, a display, a USB interface, a power interface, a network interface, a storage chip, a rechargeable battery and a power switch, and is characterized in that: the RFID reader-writer is also included; the RFID reader-writer is used for interacting information with the spoon, particularly with an electronic tag (5) of a data wireless transmission assembly; the microprocessor automatically sets the total price of the dishes transmitted by the data wireless transmission assembly as the settlement amount of the dishes, and displays the settlement amount of the dishes on the display to automatically complete price allocation of the dishes.

The invention discloses a vending system, which comprises the following specific embodiments:

as shown in fig. 11, a vending system, comprising: the invention also includes six-seven of the specific embodiments of the spoon, one of the specific embodiments of the POS machine of the invention, an electronic tag reader-writer, a dish electronic tag and a terminal peripheral, and is characterized in that:

the terminal peripheral comprises a management terminal and a user terminal;

the dish electronic tag is stuck to a dish container or a place beside a show window and the like where workers and diners can easily obtain the dish electronic tag; the dish electronic tag is used for storing basic information of the dishes;

the electronic tag reader-writer is used for acquiring basic information of dishes from the management terminal, writing the basic information into the electronic tags of the dishes and accessing information stored in the electronic tags of the dishes;

the diner can press the user terminal (such as a mobile phone, an intelligent bracelet and a watch) close to the dish electronic tag so as to read information stored in the dish electronic tag;

according to the spoon disclosed by the invention, the six-seven specific embodiments can read the basic information of dishes stored in the dish electronic tag; more specifically, before dishes are served, the spoon head (1) of the six to seven specific embodiments of the spoon of the present invention is close to the dish electronic tag to read the basic information of the dishes including the unit price of the dishes, and automatically complete the unit price setting of the dishes.

Sixth to seventh embodiments of the spoon of the present invention and a POS machine of the present invention, first embodiment of the POS machine interacts with the dish vending information to complete the pricing of the dishes;

the diner performs information interaction with the first POS machine embodiment of the invention through the user terminal and/or the diner card to complete dish settlement; during the settlement of the dishes, diners can obtain partial dish selling information (such as dish allowance, dish weight m, dish total price and dish heat) permitted by the user authority from the POS machine through the user terminal, timely master the dish settlement condition and the diet health condition of the diners and manage the consumption behaviors of the diners;

the invention relates to a POS machine, which comprises a POS machine body, a management terminal and a control module, wherein the POS machine body is used for interacting vegetable vending information with the management terminal; the management terminal further analyzes and obtains the vending process data according to the dish vending information, so that the vending process and the vending behavior are monitored in real time.

The vending system of the invention has the following functions:

the method can bring the link of selling the dishes into a management system of a mass-selling catering place, analyze the obtained data of the selling process and provide basic data for developing operation and management activities (such as menu formulation, dish preparation plan, dish serving speed, dish supplementing time, employee attendance and employee greedy behavior detection) of the mass-selling catering place;

The invention relates to a dish price dividing method, which comprises the following specific embodiments:

the dish price marking method used in cooperation with the fifth to seventh specific embodiments of the spoon and the first specific embodiment of the POS machine is characterized by comprising the following steps of:

the method comprises the following steps: before a worker takes a dish, the spoon can be used for setting the unit price of the dish specifically by correspondingly adopting a mode (a fifth specific embodiment) that a control module (6) interacts dish information with the outside through a data wireless transmission component, or a mode (a sixth specific embodiment) that a spoon head (1) adhered with an electronic tag (5) is close to the electronic tag of the dish, or a mode (a seventh specific embodiment) that a button switch component (9) is operated by hands;

step two: the worker uses the spoon to order dishes and automatically finishes dish weighing and dish pricing;

step three: the spoon provided by the invention interacts with the POS machine through a data wireless transmission component (a recommended electronic tag (5)) to exchange dish selling information, and dish price-dividing is automatically completed.

For convenience of understanding, the following description will be given by taking a seventh embodiment of the spoon of the present invention and a first embodiment of a POS machine of the present invention as examples to describe the working process thereof: referring to fig. 5, in operation, a worker first presses the reset-to-zero button (91) to peel off the skin to prevent the spoon from having residual dishes to affect the total price of the dishes; according to the type of dishes selected by diners, a worker can press a vegetable unit price button (92) or a meat unit price button (93) to manually set the unit price of the dishes; of course, the spoon head (1) can be close to the dish electronic tag, so that the unit price of the dish can be automatically set, and further description is omitted. The worker uses the spoon of the invention to make dishes; then, the control module (6) processes the obtained weight m and the total price of the dish, namely weighing and pricing of the dish are automatically completed; the spoon is close to the POS machine, the control module (6) sends the total price of the dishes to the RFID reader-writer of the POS machine through the RFID antenna (51), the POS machine displays the settlement amount of the dishes, the staff pour the dishes into plates or bowls of diners, and the diners finish the settlement of the dishes by using the diner cards and/or the user terminals.

In the several embodiments provided in the present invention, it should be understood that the disclosed system and components may be implemented in other ways. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. Several units or means recited in the system claims may also be implemented by one and the same unit or means in software or hardware. The terms first, second, etc. are used to denote names, but not any particular order.

Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a spoon, includes spoon head (1), spoon handle (2), subassembly (4) of weighing, control module (6), power module (10), its characterized in that: the weighing assembly (4) comprises a strain gauge; the strain gauge is arranged on the spoon handle (2); the strain gauge consists of a test bridge circuit, and is used for converting a strain value caused by the weight m of the dishes into an output voltage U of the test bridge circuit; the control module (6) is respectively and electrically connected with the power module (10) and the weighing component (4); the control module (6) is used for storing basic information of the dishes at least comprising the unit price of the dishes and acquiring and processing the output voltage signal so as to obtain and store vending information of the dishes at least comprising the total price of the dishes; the power supply module (10) is used for respectively supplying power to the control module (6) and the weighing component (4).

2. The scoop according to claim 1, wherein: the spoon handle (2) comprises a first spoon handle (21) and a second spoon handle (22); an elastic deformation body (43) is connected between the first spoon handle (21) and the second spoon handle (22); the strain gauge is adhered to the mechanical strain surface of the elastic deformation body (43).

3. The scoop according to claim 2, wherein: the elastic deformation body (43) is provided with a deformation arch; the deformation arch comprises a first deformation arch (41) and a second deformation arch (42), and the first deformation arch (41) is communicated with the second deformation arch (42) through a deformation arch transition area; the strain gauge is arranged on a mechanical strain surface of the deformation arch; the strain gage constitutes a full bridge test bridge.

4. The scoop according to claim 1, wherein: the spoon also comprises an angle sensor (3) for measuring an included angle alpha between the spoon handle (2) and the horizontal plane; the control module (6) is also used for collecting and processing the output signals of the angle sensor (3).

5. The scoop according to any of claims 1-4, wherein: the system also comprises a data wireless transmission component for realizing information interaction between the control module (6) and the outside.

6. The scoop according to claim 5, wherein: the data wireless transmission assembly comprises an electronic tag (5); an RFID antenna (51) of the electronic tag (5) is arranged on the spoon head (1).

7. A POS machine for use with the ladle of claim 5, wherein: the RFID reader-writer is included; the RFID reader-writer is used for interacting information with the spoon to complete price drawing of dishes.

8. A vending system, comprising: the dish-washing machine further comprises the spoon as claimed in claim 6, the POS machine as claimed in claim 7, an electronic tag reader-writer, an electronic tag of dishes and a terminal peripheral; the terminal peripheral comprises a management terminal and a user terminal; the dish electronic tag is used for storing basic information of the dishes; the electronic tag reader-writer is used for acquiring information from the management terminal, writing the information into the dish electronic tag and accessing the information stored in the dish electronic tag; the diner can enable the user terminal to be close to the dish electronic tag so as to read information stored in the dish electronic tag; the spoon can read the information stored in the dish electronic tag; the spoon and the POS machine interact with dish selling information to finish dish price marking; the diner performs information interaction with the POS machine through the user terminal and/or the meal card to complete dish settlement; and the POS machine and the management terminal interact with dish selling information.

9. The vending system of claim 8, wherein: diners can obtain part of dish selling information permitted by user authority through the user terminal; and the management terminal analyzes and obtains the vending process data according to the dish vending information.

10. A method of rating dishes for use with the ladle of claim 6 and with the POS machine of claim 7, wherein: the method comprises the following steps: