CN217616144U - Sorting equipment for fruits and vegetables - Google Patents

Abstract

The utility model discloses a letter sorting equipment that fruit vegetables were used, include: the conveying belt comprises a first straight line section, a turning part and a second straight line section which are connected in sequence; the first straight line segment is parallel to the second straight line segment; each tray is provided with a cavity for containing fruits and vegetables, and each tray sequentially passes through the turning part and the second straight line section from the first straight line section; the bottom of each tray is provided with a gravity sensor; a sorting unit disposed on the second straight line segment; the monitoring point of the gravity sensor is located on the first straight line segment. The embodiment of the utility model provides an above-mentioned structure of adopting has following advantage: the weighing method adopted by the embodiment of the application only weighs the weight of the fruit monomer, the weight loss of the fruit support is not required to be considered, the weighing result is directly reported, and repeated calculation is not required; as long as the fruit and vegetable are in a stable state (for example, the conveying belt has a section of linear body) during weighing. Although each fruit tray is triggered successively, the time of the weighing part is independent, and the fruit trays are automatically reported after being weighed.

Description

Sorting equipment for fruits and vegetables

Technical Field

The utility model relates to a transfer system especially relates to a letter sorting equipment that fruit vegetables were used.

Background

At present, sorting equipment is generally adopted to sort fruits and vegetables. The sorting equipment can comprise a conveyor belt, a weight detection device, an infrared spectrometer and a sorting unit, so as to screen and classify the fruits and vegetables based on weight, volume, sugar degree and the like.

Fig. 1 shows a prior art fruit and vegetable sorting installation. The sorting apparatus comprises a first conveyor belt 1 and a second conveyor belt 3, between which a weighing belt 2 is arranged. The fruits and vegetables loaded on the tray are sequentially transferred from the first conveyor belt 1 to the weighing belt 2 and then transferred from the weighing belt 2 to the second conveyor belt 3. In the process that the tray with the fruits and vegetables passes through the weighing belt, the weighing belt 2 uploads the obtained related data to the upper computer.

In the chinese patent library, publication No. CN111160450A, entitled chinese patent application of a neural network-based fruit and vegetable weighing method, storage medium, and device, discloses another weight detection device. The weight detection device adopts a neural network model to identify the outer contour and the type of the fruits and vegetables, estimates the density of the fruits and vegetables according to the type, calculates the volume of the fruits and vegetables according to the outer contour, and calculates the weight of the fruits and vegetables according to the volume and the density.

SUMMERY OF THE UTILITY MODEL

However, through creative research and discovery of the utility model, the weight detecting device of the first mode has the following defects:

1. it is necessary to ensure that only one fruit bowl is on the weighing belt at a time, i.e. only one fruit bowl can be tested at a time, so that the speed of the weighing belt and the speeds of the front and rear conveyor belts are limited. At present, the fastest speed can only reach 1s time to weigh 3.

2. Because the trays and the fruits and vegetables pass through the weighing belt together, the weight of the tray corresponding to each fruit and vegetable must be known in advance, and the weight of each fruit and vegetable needs to be obtained by subtracting the weight of the tray corresponding to the fruit and vegetable from the total weight of the fruit and vegetable. Therefore, binding of the respective trays and their weights is required. After a long run, the trays are worn out, so that all the trays can be calibrated and bound again only periodically.

3. Repeated practice shows that the method can cause large errors. Although the error is only + - (3-4) g during the stabilization period, if there is a certain vibration near the weighing period, the error may become about 20 g.

Through creative research and discovery of the utility model, the detection device and the method for obtaining weight by appearance in the second mode have the following defects:

an outer contour model for identifying fruits and vegetables needs to be established, a type-density model of the fruits and the vegetables needs to be established in advance, repeated research and demonstration are needed for establishing the model, and the accuracy is difficult to guarantee by errors generated by combining the two models.

The utility model aims to solve the technical problem that the not enough spectrometer that provides a spectrum appearance is used and spectrum appearance to prior art, it can effectively solve at least one in the above-mentioned problem.

The embodiment of the application discloses letter sorting equipment that fruit vegetables were used includes:

the conveying belt comprises a first straight line section, a turning part and a second straight line section which are connected in sequence;

wherein the first straight line segment and the second straight line segment are parallel;

each tray is provided with a cavity for containing fruits and vegetables, and each tray sequentially passes through the turning part and the second straight line section from the first straight line section; the bottom of each tray is provided with a gravity sensor;

a sorting unit disposed on the second straight line segment;

the monitoring point of the gravity sensor is located on the first straight line segment.

Preferably, the control system comprises an upper computer and a plurality of hosts electrically connected with the upper computer, the plurality of trays are divided into a plurality of tray units which are arranged at intervals in sequence, and the gravity sensor of each tray unit is electrically connected with one of the hosts.

Preferably, the gravity sensor of the tray unit is connected with the host computer through zigbee wireless transmission technology.

Preferably, the upper computer can obtain 6-7 gravity data acquired by the gravity sensor uploaded by the host computer within 1 second.

Preferably, each tray is provided with a chip, and each chip is electrically connected with the host and the gravity sensor respectively.

Preferably, the chip is used for acquiring a plurality of gravity data in a detection interval with a certain length through the gravity sensor, and the chip is used for generating a weight value according with a value in a preset fluctuation range in the plurality of weight data.

Preferably, the chip is used for judging whether the fruit and vegetable are arranged on the tray through the gravity sensor and carrying out zero calibration treatment on the weight sensor of the tray.

To sum up, the embodiment of the utility model provides an adopt above-mentioned structure, have following advantage:

1. the weighing method adopted by the embodiment of the application only weighs the weight of the fruit monomer, the weight loss of the fruit support is not required to be considered, the weighing result is directly reported, and repeated calculation is not required; after the fruits, vegetables and the trays are stably operated on the first straight line segment, the data acquired at the time point can be accurate.

2. As long as the fruits and vegetables are in a stable state (for example, the conveying belt has a section of linear body) when weighing is ensured. Although each fruit tray is triggered successively, the time of the weighing part is independent, and the fruit trays are automatically reported after being weighed. Because the zigbee wireless transmission technology is adopted, the speed can reach 1 s-6.

For a better understanding of the features and technical content of the present invention, reference should be made to the following detailed description and accompanying drawings, which are provided for purposes of illustration and description, and are not intended to limit the invention.

Drawings

In order to more clearly illustrate the embodiments of the present specification or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present specification, and for those skilled in the art, other drawings can be obtained according to the drawings without any creative effort.

Fig. 1 shows a prior art sorting plant for fruits and vegetables.

Fig. 2 shows a fruit and vegetable sorting apparatus in an embodiment of the present application.

FIG. 3 shows another fruit and vegetable sorting apparatus according to an embodiment of the present application

The figures of the above drawings are numbered: 1. a first conveyor belt; 2. weighing the belt; 3. a second conveyor belt; 4. a tray; 5. an upper computer; 6. a conveyor belt; 61. a first straight line segment; 62. a turning belt; 63. a second straight line segment; 7. detecting points; 8. a host; 9. a feeding mechanism; 10. an infrared spectrum detector; 11. and a sorting unit.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present specification, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only a part of the embodiments of the present specification, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the present specification without any inventive step should fall within the scope of protection of the present specification.

The following embodiments are provided as specific examples, and those skilled in the art will understand the advantages and effects of the present invention from the disclosure of the present specification. The present invention may be practiced or carried out in other different embodiments, and various modifications and changes may be made in the details of this description based on the different points of view and applications without departing from the spirit of the present invention. The drawings of the present invention are for illustrative purposes only and are not intended to be drawn to scale. The following embodiments will further explain the related art of the present invention in detail, but the disclosure is not intended to limit the scope of the present invention.

It will be understood that, although the terms first, second, third, etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one element from another element, or from one signal to another signal. In addition, the term "or" as used herein should be taken to include any one or combination of more of the associated listed items as the case may be.

Referring to fig. 2, the embodiment of the application discloses a fruit and vegetable sorting device, which comprises a transportation mechanism, a sorting module and a sorting module, wherein the transportation mechanism is used for transporting fruits and vegetables along a preset path;

the trays are respectively and independently arranged on the conveying mechanism at intervals and move along with the conveying mechanism, and each tray is used for receiving fruits and vegetables;

wherein each tray is provided with a gravity sensor;

and the control system is electrically connected with each gravity sensor.

Conveyor 6 may include a first straight section 61, a turning belt 62, and a second straight section 63. The first straight line segment 61 has opposite first and second ends. A second end of the first straight line segment 61 is connected to one end of the turning belt 62. The second straight line segment 63 has a third end and a fourth end. The third end of the second straight line section 63 is connected with the other end of the turning belt 62. The turn belt 62 may be generally U-shaped. The first and second straight segments 61 and 63 may be arranged in parallel. The layout can save space as much as possible and reduce floor layout.

A feeding mechanism 9 for feeding fruits and vegetables may be provided at a first end of the first straight line section 61 (or between the first end and a second end of the first straight line section 61). Each tray is individually placed on the conveyor belt 6 in sequence. The fruits and vegetables fed out by the feeding mechanism 9 can be sequentially introduced into each tray.

A plurality of trays are independently and sequentially arranged on the conveyor belt 6, and each tray can move along a predetermined path along the conveyor belt 6. That is, after the fruit and vegetable is dropped into the tray, the tray carrying the fruit and vegetable sequentially passes through the turning belt 62 and the second straight line section 63 along the first straight line section 61.

By means of the structure, each fruit and vegetable is respectively arranged on the corresponding tray. In other words, each fruit and vegetable corresponds to a tray corresponding to the fruit and vegetable. The trays carrying the fruits and vegetables are arranged in sequence on the transport mechanism and move along a predetermined path of the transport mechanism. In the movement process, the gravity sensor arranged on the tray detects fruits and vegetables arranged on the tray, and transmits the detected data to the control system. By adopting the weighing mode, the collection mode is simple, the weight of the fruit and vegetable is only obtained, the weight loss of the tray is not required to be considered, the obtained gravity data result is directly used as the weight of the fruit and vegetable, and repeated calculation is not required. Based on this, the weighing error of the sorting device in the embodiment of the application is small, and is only +/-2 g. The fruit and vegetable sorting equipment adopting the weighing structure is convenient to use, and the tray is placed at any time for measurement.

Specifically, in the present embodiment, the transport mechanism may be the conveyor belt 6. Of course, in other alternative embodiments, the transportation mechanism may be in other forms of mechanisms with a transmission function. Unlike the first sorting device in the background art, the transportation mechanism in this embodiment may be a complete conveyor belt 6, and the tray with the fruits and vegetables may move on the conveyor belt 6 at a constant speed and a high speed. For example, the conveying speed of the fruits and vegetables in the prior art is 36 m/s, while the conveying speed of the fruits and vegetables in the embodiment of the application can be stabilized at 72 m/s.

In the present embodiment, a cavity is provided inside the tray. The top of the tray is provided with an opening communicated with the cavity, so that the fruits and vegetables fall into the cavity from the opening. And a gravity sensor is arranged at the bottom of the tray. The gravity sensor can measure the weight of the fruits and vegetables falling into the cavity so as to obtain the gravity data of each fruit and vegetable. The tray may also contain chips. The chip can be electrically connected with the control system in a wireless mode so as to quickly upload the gravity data to the control system.

In the present embodiment, a detection mechanism such as an infrared spectrum detector 10 may be provided on the second straight line section 63 of the conveyor 6. And, downstream of the detection mechanism, the sorting apparatus for fruits and vegetables may be further provided with a sorting unit 11. The sorting unit 11 can classify the fruits and vegetables according to the gravity data, sweetness information, density information and the like identified by monitoring systems such as a detection system, a gravity sensor and the like. That is, the control system controls the sorting unit 11 to distribute the fruits and vegetables in the same range section with the gravity data, the sweetness information, the density information and the like to the same branch channel to be gathered together when acquiring the gravity data, the sweetness information, the density information and the like sent by the gravity sensor and the detection system.

In a preferred embodiment, the first straight line segment 61 has a preset length. The preset length may allow the chip to record gravity data on a gravity sensor disposed on the tray and use the gravity data as the weight of the fruit and vegetable when the fruit and vegetable falls into the tray for a preset time (e.g., 1 second or 2 seconds) and the tray is located on the first straight line segment 61. That is to say, at the moment that the fruit vegetables just fall into, the fruit vegetables can produce certain impact to the tray, and the data of measuring this moment is inaccurate. After the fruits, vegetables and the trays are relatively stable and run on the conveyor belt 6, the data acquired at the time point can be relatively accurate. Also, the chip may have a memory function. Each chip can report the data to the control system in sequence.

In a preferred embodiment, the control system comprises an upper computer and a plurality of hosts 8 electrically connected with the upper computer, the plurality of trays are divided into a plurality of tray units arranged in sequence at intervals, and the gravity sensor of each tray unit is electrically connected with one of the hosts 8. For example, referring to fig. 3, in the present embodiment, the host 8 may be a zigbee coordinator. A network may be established through each zigbee coordinator. Each zigbee coordinator corresponds to one tray unit, and each tray unit is composed of a plurality of trays. When one tray in any tray unit passes through the detection point 7 in sequence to trigger the weighing point (which can be located on the first straight line segment 61, and in other alternative embodiments, can be set at a proper position as required), the current fruit weight is collected. And after a period of time of collection, reporting to a zigbee coordinator corresponding to the tray unit through a zigbee network, and reporting to an upper computer by the zigbee coordinator to display the current fruit weight in real time. Because the number of the trays arranged below the zigbee coordinator is limited, the packet loss can not occur even under the condition that the conveyor belt 6 runs at a high speed, and each zigbee coordinator can completely receive the equipment information. For example, the upper computer in the embodiment of the present application can receive 6-7 stable weighing data within 1 s. And the chip and the zigbee coordinator carry out transmission by using a zigbee wireless transmission technology. The zigbee wireless transmission technology can realize simultaneous multi-station networking in a small range, and can realize low power consumption. The current wireless communication technologies including wifi, bluetooth and the like cannot meet the conditions at the same time.

Preferably, when not in use, the upper computer can also send a sleep instruction to the chip so that the gravity sensor on the tray automatically enters a sleep mode.

Referring to fig. 2 and 3, the sorting method for the fruit and vegetable equipment comprises the following steps:

the trays arranged on the conveying mechanism receive the fruits and vegetables in sequence;

the gravity sensors arranged on the trays detect the weight of the fruits and the vegetables when the fruits and the vegetables are in a stable state;

and each gravity sensor uploads the acquired gravity data to the control system.

In this embodiment, the steady state of the fruit and vegetable may be determined based on whether the speed of the tray is within a steady range, and/or the length of time the fruit and vegetable falls into the tray, etc.

The control system classifies the fruits and vegetables by the sorting unit 11 according to the received gravity data.

For example, each tray disposed on the conveying mechanism receives apples (of course, other fruits and vegetables may be used). After the tray is received by the apple for 1.5 seconds, the weight sensor arranged on the tray measures the weight of the apple to obtain gravity data.

Referring to fig. 3, the weight sensor is uploaded to the corresponding zigbee coordinator (host 8) through the chip and the zigbee wireless transmission protocol, and then uploaded to the upper computer through the corresponding zigbee coordinator. The upper machine obtains the weight of each apple, such as 300g,200g,247g,428g,578g and the like. The sorting units 11 are four and respectively correspond to the following sorting units in the first category: 200g or less; the second type: 201-350g; the third type: 351g-450g; the fourth type: four major apple categories of 451g or more. The upper computer divides 300g of apples into a second category; 200g of apples were classified into the first category; putting 247g into the second category; classifying 428g of apples into a third category; 578g of apples were classified into a fourth category. The host computer guides each apple into the sub-runners according to classification by controlling the corresponding sorting unit 11 to act.

The above disclosure is only a preferred and practical embodiment of the present invention, and is not intended to limit the scope of the claims of the present invention, so that all the modifications of the equivalent technology made by the disclosure and drawings are included in the scope of the claims of the present invention.

The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. The application is operational with numerous general purpose or special purpose computing system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet-type devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.

While the present application has been described with examples, those of ordinary skill in the art will appreciate that there are numerous variations and permutations of the present application without departing from the spirit of the application and that the appended embodiments are intended to encompass such variations and permutations without departing from the application.

Claims (5)

1. The utility model provides a letter sorting equipment that fruit vegetables were used which characterized in that includes:

the conveying belt comprises a first straight line section, a turning part and a second straight line section which are connected in sequence;

wherein the first straight line segment and the second straight line segment are parallel;

each tray is provided with a cavity for containing fruits and vegetables, and each tray sequentially passes through the turning part and the second straight line section from the first straight line section; the bottom of each tray is provided with a gravity sensor;

a sorting unit disposed on the second straight line segment;

the monitoring point of the gravity sensor is located on the first straight line segment.

2. The fruit and vegetable sorting device according to claim 1, wherein the sorting device comprises an upper computer and a plurality of hosts electrically connected with the upper computer, the trays are divided into a plurality of tray units arranged at intervals in sequence, and the gravity sensor of each tray unit is electrically connected with one of the hosts.

3. The fruit and vegetable sorting apparatus of claim 2, wherein the gravity sensor of the tray unit is connected to the main machine by zigbee wireless transmission technology.

4. The fruit and vegetable sorting equipment according to claim 2, wherein the upper computer can obtain 6-7 gravity data acquired by the gravity sensor uploaded by the host computer within 1 second.

5. The fruit and vegetable sorting apparatus according to claim 2, wherein each tray is provided with a chip, and each chip is electrically connected to the main frame and the gravity sensor.

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