An artificial intelligence type weighing meal picking device and method

Abstract

The present invention discloses an artificial intelligence type weighing meal-taking device and method. The present invention locks a public spoon for taking meals on a buffet stove through a public spoon locking mechanism. Only when fingerprint recognition and portrait recognition are passed, the public spoon locking mechanism is unlocked, and the cover of the buffet stove is opened, can meals be served. The public spoon for taking meals is bound to the buffet stove, and only the public spoon for taking meals unlocked by the buffet stove can enter the buffet stove for dinner. The weight sensor is built into the public spoon for taking meals, and its size is small. In summary, the present invention can replace the original radio frequency device, card reading antenna and large weighing equipment, and ensures that one spoon is dedicated through the binding relationship between the public spoon for taking meals and the buffet stove, thereby preventing the taste of different dishes from mixing.

Description

Technical Field

[0001] The invention discloses an artificial intelligence type weighing meal picking device, belonging to the field of artificial intelligence meal picking and accurate weight measurement. Background Art

[0002] Existing intelligent self-service restaurants need to rely on special plates (with built-in radio frequency identification chips) and large weighing sensors to achieve meal weight measurement and identity recognition. The original technical solution requires customized plates and the installation of radio frequency devices near each dining stove, requiring a large number of card reading antennas to read weight changes; for identity recognition, a set of face or card swiping devices needs to be customized in advance to bind personnel information, and a large number of customized peripherals need to be assembled; the existing weighing solution uses an electronic scale device installed at the bottom of the dining stove for weighing and measurement. The electronic scale has a large structure and is cumbersome to operate and install. That is, the original solution has technical disadvantages such as high cost of customized devices, large space occupation, poor weighing accuracy, failure to guarantee a dedicated spoon, and failure to guarantee successful information binding for each dining stove. Summary of the invention

[0003] In view of the defects of the prior art, the present invention provides an artificial intelligence type weighing and picking device to solve the technical shortcomings of the existing customized buffet devices, such as high cost, large space occupation, inaccurate measurement and failure to ensure a dedicated spoon.

[0004] In order to solve the technical problem, the technical solution adopted by the present invention is: an artificial intelligence type weighing and meal taking device, comprising a public spoon for taking meal, a buffet stove, a public spoon locking mechanism, a weight calculation unit and a control unit; the public spoon for taking meal is locked on the buffet stove by the public spoon locking mechanism; the public spoon for taking meal has a built-in weight sensor, a fingerprint identifier and a wireless transmitter, the buffet stove is provided with a camera and a buffet stove cover, the fingerprint identifier and the camera are connected to the input end of the control unit, the output end of the control unit is connected to the public spoon locking mechanism and the buffet stove cover driving motor, the fingerprint identifier, the camera and the public spoon locking mechanism and the buffet stove cover are linked by the control unit, the weight sensor is connected to the weight calculation unit, the weight calculation unit is connected to the control unit, and the binding relationship between the meal weight and the diner is realized by the control unit.

[0005] Furthermore, the public spoon locking mechanism includes a first electromagnet and an adsorbed area, the first electromagnet is arranged on the buffet stove, the adsorbed area is a ferromagnetic material arranged on the public spoon for taking food, and the power supply control end of the first electromagnet is connected to the control unit.

[0006] Furthermore, the weight sensor includes a lever shaft, a second electromagnet and a permanent magnet. The lever shaft is arranged on the handle of the public spoon for taking meals. The permanent magnet and the head of the public spoon for taking meals are respectively connected to the two ends of the lever shaft. The second electromagnet and the permanent magnet are arranged opposite to each other. The end of the second electromagnet opposite to the permanent magnet is marked as A, and the end of the permanent magnet opposite to the second electromagnet is marked as B. End A and end B have the same polarity, and the weight calculation unit is connected to the coil of the second electromagnet.

[0007] Furthermore, the buffet stove is bound to the public spoon for taking food through an identification device, and the identification device includes an infrared sensing device and a chip. The infrared sensing device is arranged in the food taking area of ​​the buffet stove and the infrared sensing device is connected to the control unit. The chip is arranged on the public spoon for taking food and the binding relationship information with the buffet stove is written in the chip.

[0008] Furthermore, the buffet stove cover is covered above the buffet stove by a bracket, the bracket is two longitudinal shafts connected to the two ends of the buffet stove cover, a motor is installed on one longitudinal shaft, a gear is sleeved on the motor output shaft, a sector gear is provided at one end of the buffet stove cover, the gear on the motor output shaft meshes with the sector gear, a guide groove is opened on the other end of the longitudinal shaft, a protruding pin shaft is provided at the other end of the buffet stove cover, and the pin shaft is arranged in the guide groove through a bearing.

[0009] The present invention also discloses an artificial intelligence type weighing and meal picking device, comprising the following steps:

[0010] S01), the diner collects face or fingerprint information in front of the buffet stove, and then transmits the collected information to the control unit, which compares the collected face or fingerprint information with the pre-stored diner information. If the comparison is successful, the face recognition or fingerprint recognition is successful, and the diner's identity is determined;

[0011] S02), after the face recognition or fingerprint recognition is successful, the control unit controls the public spoon for taking the meal to be unlocked, and controls the buffet stove cover on the buffet stove to be opened, and the diner takes the public spoon for taking the meal to start taking the meal;

[0012] S03) When a diner takes a serving spoon to enter the meal-taking area, the infrared sensor on the buffet stove is triggered. The serving spoon has a chip with binding information with the buffet stove. The control unit connected to the infrared sensor reads the chip information of the serving spoon. If the reading is incorrect, an alarm is triggered and the cover of the buffet stove is closed. If the reading is correct, no alarm is triggered and the meal can be taken normally.

[0013] S04) When picking up the meal, the weight sensor on the public spoon calculates the weight of the meal and transmits the weight to the control unit. The control unit binds the weight of the meal to the identity of the diner. After the meal is picked up, the public spoon is put back and the locking device locks the public spoon. At this time, the meal amount calculated by the weight of the meal is generated and deduction occurs.

[0014] Furthermore, the weight sensor on the public spoon for taking food uses the balance of the lever and the conversion relationship between magnetism and gravity to calculate and convert weight and magnetism. The implementation method is as follows: a lever shaft is set on the handle of the public spoon for taking food, the second electromagnet and the permanent magnet are connected at both ends of the lever shaft, the second electromagnet and the permanent magnet are arranged opposite to each other, the end of the second electromagnet opposite to the permanent magnet is marked as A, and the end of the permanent magnet opposite to the second electromagnet is marked as B, end A and end B have the same polarity, and the weight calculation unit is connected to the coil of the second electromagnet for sensing the current flowing through the coil of the second electromagnet.

[0015] Furthermore, the weight sensor and the weight calculation unit are used to measure the weight according to the current of the second electromagnet coil detected by the weight sensor. The calculation process is as follows: when the public spoon for taking food is unlocked and the food is not taken, the weight calculation unit records the current Ia of the coil measured by the weight sensor at this time. After taking the food, the weight calculation unit records the current Ib of the coil measured by the weight sensor. When the food is put on the plate and the public spoon for taking food is put back into the public spoon locking mechanism, the weight calculation unit records the current Io of the coil measured by the weight sensor, and then calculates the weight of the taken food according to the following formula:

[0016] Where Z represents the weight of the meal to be calculated, n represents the number of times the current changes during one meal picking process, and hk is a set constant obtained by calibration with a standard measuring weight.

[0017] Beneficial effects of the present invention: The present invention locks the public spoon for taking meals on the buffet stove through the public spoon locking mechanism. Only when the fingerprint recognition and portrait recognition are passed, the public spoon locking mechanism is unlocked, and the buffet stove cover is opened, can meals be served. There is a binding relationship between the public spoon for taking meals and the buffet stove. Only the public spoon for taking meals that is unlocked by this stove can enter the stove for meals. The weight sensor is built into the public spoon for taking meals and is small in size. In summary, the present invention can replace the original radio frequency device, card reading antenna and large weighing equipment, and ensures that one spoon is used exclusively through the binding relationship between the public spoon for taking meals and the buffet stove to prevent the taste of different dishes from mixing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a structural schematic diagram of another angle of the present invention;

[0020] Figure 3 It is a partial enlarged view of the serving spoon and the locking mechanism of the serving spoon;

[0021] Figure 4 This is a schematic diagram of the structure of a serving spoon for taking food;

[0022] In the figure: 1. a serving spoon, 2. a locking mechanism for the serving spoon, 3. a cover for a buffet stove, 4. a buffet stove, 5. a bracket, 6. a guide groove, 7. a pin shaft, 8. a first electromagnet, 9. an adsorbed area, 10. a lever shaft, 11. a second electromagnet, 12. a permanent magnet, 13. a head of the serving spoon. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0024] Example 1

[0025] This embodiment discloses an artificial intelligence type weighing and picking device, such as Figure 1 , as shown in 2, it includes a public spoon 1 for taking meals, a buffet stove 3, a public spoon locking mechanism 2, a weight calculation unit and a control unit; the public spoon 1 for taking meals is locked on the buffet stove 3 by the public spoon locking mechanism 2; the public spoon 1 for taking meals has a built-in weight sensor, a fingerprint identifier and a wireless transmitter, the buffet stove 4 is provided with a camera and a buffet stove cover 3, the fingerprint identifier and the camera are connected to the input end of the control unit, the output end of the control unit is connected to the public spoon locking mechanism 2 and the buffet stove cover driving motor, the fingerprint identifier, the camera and the public spoon locking mechanism 2 and the buffet stove cover 3 are linked by the control unit, the weight sensor is connected to the weight calculation unit, the weight calculation unit is connected to the control unit, and the binding relationship between the dining weight and the diner is realized by the control unit.

[0026] In this embodiment, the linkage relationship means that the camera performs facial recognition on the diners, and the fingerprint identifier performs fingerprint recognition on the diners. Only after the facial recognition and fingerprint recognition are passed, the public spoon locking mechanism is unlocked, the public spoon can be removed, and the buffet stove cover is opened, and the diners can get their meals.

[0027] In this embodiment, the binding relationship means that after the identity of the diner is determined through fingerprint recognition or face recognition, the weight of the meal is determined through the gravity calculation unit. In order to accurately deduct the fees, there is a one-to-one correspondence between the identity of the diner and the gravity of the meal, and this correspondence is achieved through the control unit.

[0028] like Figure 3 As shown, the public spoon locking mechanism 2 includes a first electromagnet 8 and an adsorbed area 9. The first electromagnet 8 is arranged on the buffet stove 1. The adsorbed area 9 is a ferromagnetic material arranged on the public spoon 1. The power supply control end of the first electromagnet 8 is connected to the control unit. When the first electromagnet 8 is powered on, it has magnetism to adsorb the public spoon 1 on the buffet stove 4. When the public spoon 1 is unlocked, the first electromagnet 8 loses its magnetism, and the public spoon 1 can be removed at this time; when the public spoon 1 is placed on the public spoon locking mechanism 2, the first electromagnet 8 restores its magnetic force and strongly adsorbs the public spoon.

[0029] like Figure 4 As shown, the weight sensor includes a lever shaft 10, a second electromagnet 11 and a permanent magnet 12. The lever shaft 10 is arranged on the handle of a public spoon for taking meals. The permanent magnet 12 and the head of the public spoon 13 are respectively connected to the two ends of the lever shaft 10. The second electromagnet 11 and the permanent magnet 12 are arranged opposite to each other. The end of the second electromagnet 11 opposite to the permanent magnet 12 is marked as A, and the end of the permanent magnet 12 opposite to the second electromagnet 11 is marked as B. The end A and the end B have the same polarity. The weight calculation unit is connected to the coil of the second electromagnet 11 for sensing the current flowing through the electromagnet coil.

[0030] This embodiment uses the balance of the lever and the conversion relationship between the magnetic force and the gravity to calculate and convert the weight and the magnetic force. The head 12 of the public spoon for taking the meal and the permanent magnet 11 are weight-balanced through the lever shaft 9. When the meal is taken, the weight of the public spoon 1 increases, and the permanent magnet 11 begins to tilt upward. At this time, the magnetic force of the second electromagnet 10 relative to the permanent magnet 11 increases to maintain the balance between the head 12 of the public spoon for taking the meal and the permanent magnet on both sides of the lever shaft 9. The magnetic force of the second electromagnet 10 is proportional to the current passed through its coil. The weight calculation unit can obtain the current passed through the second electromagnet coil 10, thereby calculating the magnetic force of the second electromagnet 10, and calculating the meal weight according to the lever balance principle.

[0031] In this embodiment, the buffet stove 4 is bound to the public spoon 1 through an identification device, and the identification device includes an infrared sensor and a chip. The infrared sensor is set in the meal-taking area of ​​the buffet stove and is connected to the control unit. The chip is set on the public spoon and the chip contains the binding relationship information with the buffet stove. When the public spoon enters the buffet stove, the infrared sensor is triggered. At this time, the control unit reads the chip information of the public spoon. If the reading is incorrect, an alarm is triggered. If the reading is correct, no alarm is triggered. That is, only the public spoon that comes with this stove and is unlocked has the authority to take food in this stove, that is, the public spoon also has identity recognition attributes. This invention can prevent the situation where other ordinary public spoons are mixed with other public spoons for taking food when a specific public spoon is not unlocked.

[0032] In this embodiment, the buffet stove cover 3 is covered above the buffet stove 4 by a bracket 5. The bracket 5 is two longitudinal shafts connected to the two ends of the buffet stove cover. A motor is installed on one longitudinal shaft. A gear is sleeved on the motor output shaft. A fan-shaped gear is provided at one end of the buffet stove cover. The gear on the motor output shaft meshes with the fan-shaped gear. A guide groove 6 is opened on the longitudinal shaft at the other end. A protruding pin shaft 7 is provided at the other end of the buffet stove cover 3. The pin shaft 7 is set in the guide groove 6 through a bearing. In this embodiment, the motor is connected to the output shaft of the control unit. After the fingerprint recognition or face recognition is successful, the control unit sends an action signal to the motor, and the motor drives the buffet stove cover to move, open or cover the buffet stove.

[0033] Although the weighing and meal-taking device described in this embodiment includes a weight calculation unit and a control unit, the methods included in the weight calculation unit and the control unit can be directly implemented by those skilled in the art based on the description, and belong to conventional technical means in this field, and are not improvements of this system. The improvement of this embodiment is the interaction relationship or connection relationship between the modules, that is, to improve the overall structure of the system to solve the corresponding technical problems to be solved by this system.

[0034] Example 2

[0035] This embodiment discloses an artificial intelligence type weighing and picking device, comprising the following steps:

[0036] S01), the diner collects face or fingerprint information in front of the buffet stove, and then transmits the collected information to the control unit, which compares the collected face or fingerprint information with the pre-stored diner information. If the comparison is successful, the face recognition or fingerprint recognition is successful, and the diner's identity is determined;

[0037] S02), after the face recognition or fingerprint recognition is successful, the control unit controls the public spoon for taking the meal to be unlocked, and controls the buffet stove cover on the buffet stove to be opened, and the diner takes the public spoon for taking the meal to start taking the meal;

[0038] S03) When a diner takes a serving spoon to enter the meal-taking area, the infrared sensor on the buffet stove is triggered. The serving spoon has a chip with binding information with the buffet stove. The control unit connected to the infrared sensor reads the chip information of the serving spoon. If the reading is incorrect, an alarm is triggered and the cover of the buffet stove is closed. If the reading is correct, no alarm is triggered and the meal can be taken normally.

[0039] S04) When picking up the meal, the weight sensor on the public spoon calculates the weight of the meal and transmits the weight to the control unit. The control unit binds the weight of the meal to the identity of the diner. After the meal is picked up, the public spoon is put back and the locking device locks the public spoon. At this time, the meal amount calculated by the weight of the meal is generated and deduction occurs.

[0040] In the present embodiment, the weight sensor on the public spoon for taking food uses the balance of the lever and the conversion relationship between magnetism and gravity to calculate and convert weight and magnetism. The implementation method is as follows: a lever shaft is set on the handle of the public spoon for taking food, the second electromagnet and the permanent magnet are connected to the two ends of the lever shaft, the second electromagnet and the permanent magnet are arranged opposite to each other, the end of the second electromagnet opposite to the permanent magnet is marked as A, the end of the permanent magnet opposite to the second electromagnet is marked as B, the end A and the end B have the same polarity, and the weight calculation unit is connected to the coil of the second electromagnet for sensing the current flowing through the coil of the second electromagnet.

[0041] Specifically, the weight sensor and the weight calculation unit, the weight calculation unit measures the weight according to the current of the second electromagnet coil detected by the weight sensor, and the calculation process is as follows: when the public spoon for taking food is unlocked and the food is not taken, the weight calculation unit records the current Ia of the coil measured by the weight sensor at this time; after taking food, the weight calculation unit records the current Ib of the coil measured by the weight sensor; when the food is put on the plate and the public spoon for taking food is put back into the public spoon locking mechanism, the weight calculation unit records the current Io of the coil measured by the weight sensor, and then calculates the weight of the taken food according to the following formula:

[0042] Where Z represents the weight of the meal to be calculated, n represents the number of times the current changes during one meal picking process, and hk is a set constant obtained by calibration with a standard measuring weight.

[0043] The process of calibrating hk using standard measuring weights is:

[0044] Let Zx=h*C, C=k*I, then Zx=h*k*I;

[0045] Where Zx is the weight of the standard weight, h and k are set constants, and the table spoon is weighed by calibrating the weight. The hk calculation formula is the actual weight measurement value. Assume that the current corresponding to the 5g weight is 0.1mA, then hk=Z / I=5 / 0.1=50.

[0046] Assume that the current changes 5 times during a meal-taking process to make the serving spoon in a balanced state, and the recorded data is as follows:

[0047]

[0048] The weight calculation unit collects and calculates the current data at each balance, and then calculates the average value to obtain the weight of the meal, Z = 50*{(2.2-0)+(2.2-0.1)+(2.2-0)+(2.2-0.15)+(1.8-0)+(1.8-0.1)+(1.9-0)+(1.9-0.1)+(1.9-0)+(1.9-0.1)} / 2÷5=97.25g.

[0049] In this embodiment, the weight calculation unit uploads the meal weight to the control unit via wireless or wired transmission, and the fingerprint sensor on the public spoon for taking the meal collects the personnel information at the same time. The meal weight and the personnel information are bound through the control unit. After the meal is taken, the public spoon is put back and the dining stove locks it. At this time, the meal amount calculated by weight is generated and deducted. If you need to take the meal, you need to continue to unlock the public spoon for taking the meal.

[0050] After the smart dining spoon of this embodiment successfully recognizes information and takes the food with the spoon, the diners can put the food in any dining device, completely getting rid of the constraints of using a specific plate (a customized plate with a built-in radio frequency chip) to serve the food.

[0051] The comprehensive information of diners needs to be collected on a unified platform and then managed. If the information collection is unsuccessful, they will not be able to use public spoons for meals, which will completely solve the defect of smart catering that non-specific groups can steal food (taking food directly without binding personal information is considered stealing food).

[0052] The above description is only the basic principle and preferred embodiments of the present invention. Improvements and substitutions made by those skilled in the art based on the present invention belong to the protection scope of the present invention.

Claims

1. An artificial intelligence weighing and picking device, characterized in that: It comprises a public spoon for taking meals, a buffet stove, a public spoon locking mechanism, a weight calculation unit and a control unit; the public spoon for taking meals is locked on the buffet stove by the public spoon locking mechanism; the public spoon for taking meals is equipped with a weight sensor, a fingerprint identifier and a wireless transmitter; the buffet stove is provided with a camera and a buffet stove cover; the fingerprint identifier and the camera are connected to the input end of the control unit; the output end of the control unit is connected to the public spoon locking mechanism and the buffet stove cover driving motor; the fingerprint identifier, the camera, the public spoon locking mechanism and the buffet stove cover are linked by the control unit; the weight sensor is connected to the weight calculation unit; the weight calculation unit is connected to the control unit; the control unit is used to realize the linkage between the meal weight and the meal The public spoon locking mechanism comprises a first electromagnet and an adsorbed area, the first electromagnet is arranged on the buffet stove, the adsorbed area is a ferromagnetic material arranged on the public spoon for taking meals, and the power supply control end of the first electromagnet is connected to the control unit; the weight sensor comprises a lever shaft, a second electromagnet and a permanent magnet, the lever shaft is arranged on the handle of the public spoon for taking meals, the permanent magnet and the head of the public spoon for taking meals are respectively connected to the two ends of the lever shaft, the second electromagnet is arranged opposite to the permanent magnet, the end of the second electromagnet opposite to the permanent magnet is marked as A, the end of the permanent magnet opposite to the second electromagnet is marked as B, the end A and the end B have the same polarity, and the weight calculation unit is connected to the coil of the second electromagnet.

2. The artificial intelligence type weighing and picking device according to claim 1 is characterized in that: The buffet stove is bound to the public spoon for taking food through an identification device, and the identification device includes an infrared sensing device and a chip. The infrared sensing device is arranged in the food taking area of ​​the buffet stove and is connected to the control unit. The chip is arranged on the public spoon for taking food and the binding relationship information with the buffet stove is written in the chip.

3. The artificial intelligence type weighing and picking device according to claim 1 is characterized in that: The buffet stove cover is covered above the buffet stove by a bracket. The bracket is two longitudinal shafts connected to the two ends of the buffet stove cover. A motor is installed on one longitudinal shaft. A gear is sleeved on the motor output shaft. A fan-shaped gear is arranged at one end of the buffet stove cover. The gear on the motor output shaft meshes with the fan-shaped gear. A guide groove is opened on the longitudinal shaft at the other end. A protruding pin shaft is arranged at the other end of the buffet stove cover. The pin shaft is slidably arranged in the guide groove through a bearing.

4. An artificial intelligence type weighing and meal picking method, characterized in that: The following steps are involved: S01), the diner collects face or fingerprint information in front of the buffet stove, and then transmits the collected information to the control unit, which compares the collected face or fingerprint information with the pre-stored diner information. If the comparison is successful, the face recognition or fingerprint recognition is successful, and the diner's identity is determined; S02), after the face recognition or fingerprint recognition is successful, the control unit controls the public spoon for taking the meal to be unlocked, and controls the cover of the buffet stove to be opened, and the diner takes the public spoon for taking the meal to start taking the meal; S03) When a diner takes a serving spoon to enter the meal-taking area, the infrared sensor on the buffet stove is triggered. The serving spoon has a chip with binding information with the buffet stove. The control unit connected to the infrared sensor reads the chip information of the serving spoon. If the reading is incorrect, an alarm is triggered and the cover of the buffet stove is closed. If the reading is correct, no alarm is triggered and the meal can be taken normally. S04), when taking the meal, the weight sensor on the public spoon for taking the meal calculates the weight of the meal and transmits the weight of the meal to the control unit, the control unit binds the weight of the meal with the identity of the diner, puts the public spoon back after taking the meal, and the locking device locks the public spoon for taking the meal. At this time, the meal amount calculated by the weight of the meal is generated and deduction occurs; the weight sensor on the public spoon for taking the meal uses the balance of the lever and the conversion relationship between magnetism and gravity to calculate and convert between weight and magnetism, and the implementation method is: a lever shaft is set on the handle of the public spoon for taking the meal, the second electromagnet and the permanent magnet are connected at both ends of the lever shaft, the second electromagnet and the permanent magnet are arranged opposite to each other, the end of the second electromagnet opposite to the permanent magnet is recorded as A, the end of the permanent magnet opposite to the second electromagnet is recorded as B, end A and end B have the same polarity, and the weight calculation unit is connected to the coil of the second electromagnet to sense the current flowing through the coil of the second electromagnet.

5. The artificial intelligence type weighing and meal picking method according to claim 4 is characterized in that: The weight sensor and the weight calculation unit are used to measure the weight according to the current through the second electromagnet coil detected by the weight sensor. The calculation process is as follows: when the public spoon for taking food is unlocked but the food is not taken, the weight calculation unit records the current through the coil Ia measured by the weight sensor at this time. After the food is taken, the weight calculation unit records the current through the coil Ib measured by the weight sensor. When the food is put on the plate and the public spoon is put back into the public spoon locking mechanism, the weight calculation unit records the current through the coil Io measured by the weight sensor, and then calculates the weight of the food taken according to the following formula: , where Z represents the meal weight to be calculated, n represents the number of current changes during a meal collection process, and hk is a set constant obtained by calibration with standard measuring weights.

Images