Intelligent floor capable of monitoring grain weight of granary in real time and preparation method thereof

文档序号：47105 发布日期：2021-09-28 浏览：35次中文

阅读说明：本技术 一种可实时监控粮仓粮食重量的智能地板及其制备方法 (Intelligent floor capable of monitoring grain weight of granary in real time and preparation method thereof ) 是由朱红飞陈佳庆朱红丽潘俊虎史雅媛于 2021-05-12 设计创作，主要内容包括：本发明涉及重量计量技术领域,具体涉及一种可实时监控粮仓粮食重量的智能地板及其制备方法。所述的智能地板由若干传感器阵列单元组成,所述的传感器阵列单元在同一平面上拼接为智能地板。所述的传感器阵列单元为称重传感器。所述的称重传感器包含电极(1)、粘附层(2)和压力敏感层(3)；所述的称重传感器的组成结构为5层夹心结构；其组成依次为电极(1)、粘附层(2)、压力敏感层(3)、粘附层(2)、电极(1)。本发明的优点：测重精准,性能稳定、量程大。制造、使用方便。可实现对粮仓内粮食的实时监控。(The invention relates to the technical field of weight measurement, in particular to an intelligent floor capable of monitoring the grain weight of a granary in real time and a preparation method thereof. The intelligent floor is composed of a plurality of sensor array units, and the sensor array units are spliced on the same plane to form the intelligent floor. The sensor array unit is a weighing sensor. The weighing sensor comprises an electrode (1), an adhesive layer (2) and a pressure sensitive layer (3); the weighing sensor has a composition structure of a 5-layer sandwich structure; the electrode comprises an electrode (1), an adhesion layer (2), a pressure sensitive layer (3), the adhesion layer (2) and the electrode (1) in sequence. The invention has the advantages that: accurate weight measurement, stable performance and wide range. Is convenient to manufacture and use. The real-time monitoring of the grain in the granary can be realized.)

1. The intelligent floor capable of monitoring the grain weight of the granary in real time is characterized by comprising a plurality of sensor array units, wherein the sensor array units are spliced into the intelligent floor on the same plane;

the sensor array unit is a weighing sensor.

2. The intelligent floor capable of monitoring the weight of grains in the granary in real time according to claim 1, wherein: the weighing sensor comprises an electrode (1), an adhesive layer (2) and a pressure sensitive layer (3);

the weighing sensor has a composition structure of a 5-layer sandwich structure; the electrode comprises an electrode (1), an adhesion layer (2), a pressure sensitive layer (3), the adhesion layer (2) and the electrode (1) in sequence.

3. The intelligent floor capable of monitoring the weight of the grains in the granary in real time according to claim 2, wherein: the material of the electrode (1) is any one of silver, carbon, aluminum or copper;

the adhesive layer (2) is a base material coated on the electrode (1);

the base material is one or a mixture of any more of conductive polyurethane, polyaniline, polypyrrole, polyphenylacetylene, poly 3, 4-ethylenedioxythiophene, PDMS-6181, PDMS-184, PDMS-651, TPU, epoxy resin, polyethylene terephthalate or polyimide.

4. The intelligent floor capable of monitoring the weight of the grains in the granary in real time according to claim 2, wherein: the pressure sensitive layer (3) is a functional material coated on the adhesive layer (2);

the functional material is one or a mixture of any more of Ti3C2-NMXene, a carbon nano tube, graphene, a silver nano tube, piezoelectric ceramic, a ZnO nano tube, a gold nano rod, nano tourmaline, nano kaolin, nano PVDF powder, nano BaTiO3 and nano PbTiO 3.

5. The intelligent floor capable of monitoring the weight of the grains in the granary in real time according to any one of claims 2 to 3, wherein the weighing sensor is prepared by the following method:

s101, coating a substrate material on the electrode (1);

s102, coating a functional material on one surface of the electrode (1) coated with the base material;

s103, coating the base material on one surface of the electrode (1) coated with the functional material again;

s104, coating a substrate material on the other electrode (1);

s105, bonding the base material surfaces of the two electrodes (1) obtained in S103 and S104 to obtain the weighing sensor;

the coating is specifically spraying or blade coating or spin coating or screen printing.

6. The intelligent floor capable of monitoring the weight of the grains in the granary in real time according to claim 1 or 2, wherein the intelligent floor is prepared by the following method:

s201, bonding the sensor array units on a substrate material at equal intervals by using a bonding material;

and S202, covering the other side of the sensor array unit bonded on the substrate material with a bonding material.

7. The intelligent floor capable of monitoring the weight of grains in the granary in real time according to claim 6, wherein: the substrate material is one or a mixture of any more of polyethylene terephthalate, polyimide, polycarbonate or polyethylene oxide;

the binding material is any one of water-based screen printing machine glue, 3M7355, SY001, oily self-adhesive sticker, WD-2000, double-sided adhesive tape and conductive silver paste.

8. The intelligent floor capable of monitoring the weight of grains in the granary in real time according to claim 6, wherein: the thickness of the substrate material is 0.05-2 mm;

the intelligent floor is paved on the bottom surface of the full granary.

9. The intelligent floor capable of monitoring the weight of the grain in the granary in real time according to the claim 1, the formula for calculating the weight of the grain in the granary by the intelligent floor is as follows:

W_sum＝∑W_D

W_D＝W_S/R

R＝S_s/S_D

wherein, W_sumThe total weight of the grain is taken as the weight of the grain;

W_Dmicro-partition grain weight;

W_Sthe weight of the grain on the sensor array unit;

S_sis the area of the sensor array element;

S_Dis the micro-partition area.

10. The intelligent floor capable of monitoring the weight of grains in the granary in real time according to claim 9, wherein the micro-partition area calculation formula is as follows:

S_D＝S_Sum/N

wherein S is_SumThe bottom area of the granary;

and N is the number of the sensor array units.

Technical Field

The invention relates to the technical field of weight measurement, in particular to an intelligent floor capable of monitoring the grain weight of a granary in real time and a preparation method thereof.

Background

Grain is the foundation of economic development, social stability and national independence, grain safety is an important component of national safety strategy, a grain storage system is established, and the method plays a positive role in protecting the grain enthusiasm of farmers, adjusting the supply and demand of grain markets, ensuring national grain safety and realizing the continuous and rapid healthy development of national economy.

Along with the proposal of the concept of intelligent food, people pay attention to the requirements of intelligent, informatization and automatic food condition monitoring systems, and along with the rapid development of mobile intelligent equipment, the intelligent food monitoring system plays a role in promoting the development of the intelligent food. The remote control technology for realizing the remote sensor through the terminal is relatively mature, and the remote control technology is widely applied to the fields of intelligent home, greenhouse control and the like. However, in the current grain condition monitoring field, most grain condition monitoring systems still stay in the granary field, and workers need to take turns to watch and patrol to monitor and control the grain moisture. Such a management mode is disadvantageous in that, today, networks are developed and smart mobile devices are popularized, such as high labor cost, inconvenient management, low work efficiency, and information lag. Even if there is a remote monitoring granary, the collected parameters are not reasonable.

One of the most important indexes of the grain from the warehouse entry is the weight of the grain, the authenticity of the grain quantity and the real-time monitoring of the weight of the grain, which are related to ensuring that the grain is called to move and be used when the country needs the grain urgently. A set of grain weighing system needs to be developed, so that the grain administrative department can conveniently monitor the weight of the grains in the granary in real time. The novel technologies such as the Internet of things, big data, AI, 5G, block chains and the like are further fused, the modernization of the governing system and the governing capability of grain-related enterprises and national grain management departments is assisted, the establishment of a higher-level, higher-quality, more-efficient and more-sustainable grain safety guarantee system is accelerated, and the method is a ' bowl for holding Chinese people ' to protect driving '.

Currently, grain weight monitoring is performed by two methods: firstly, when the grain is transported into a warehouse, the weight is calculated through the weighbridge, and the scheme can only monitor the weight information of the grain when the grain enters or exits the granary and is not sensitive to the weight of a small amount of grain; and secondly, the volume estimation algorithm is adopted when the terminal inventory of the year is finished. The estimation error is large, especially in the estimation of large grain bin, the error is in the order of hundreds of tons to kilotons. Thirdly, once the grains are put in storage, the grain bin management personnel cannot monitor the weight of the grains in real time, so that the grains in the grain bin are prevented from being stolen, and the check of the weight of the grains is difficult. The sensing device node with the tail end used for preventing burglary in the granary monitoring and management system is generally a human body infrared sensor and/or a camera, and once other people break through the line of defense of the human body infrared sensor and the camera, grains can be stolen. Finally, the weight of the grain in the granary cannot be monitored in real time, and the storage state of the grain cannot be monitored, so that the grain is missed and the emergency states such as mildew, collapse and the like can be handled in time.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the intelligent floor which has stable performance, low nonlinear error, accurate measurement, convenient manufacture and use and can monitor the weight of the grains in the granary in real time.

In order to achieve the purpose, the invention adopts the technical scheme that:

the intelligent floor is composed of a plurality of sensor array units, and the sensor array units are spliced on the same plane to form the intelligent floor.

Further, the sensor array unit is a weighing sensor.

Further, the weighing sensor comprises an electrode 1, an adhesion layer 2 and a pressure sensitive layer 3;

the weighing sensor has a composition structure of a 5-layer sandwich structure; the pressure sensitive electrode sequentially comprises an electrode 1, an adhesion layer 2, a pressure sensitive layer 3, the adhesion layer 2 and the electrode 1.

Furthermore, the material of the electrode 1 is any one of silver, carbon, aluminum or copper;

the adhesive layer 2 is a base material coated on the electrode 1;

Further, the pressure sensitive layer 3 is a functional material coated on the adhesive layer 2;

The invention also provides a preparation method of the weighing sensor in the intelligent floor, which can monitor the grain weight of the granary in real time.

A weighing sensor in an intelligent floor capable of monitoring the weight of grains in a granary in real time is prepared by the following method:

s101, coating a substrate material on the electrode 1;

s102, coating a functional material on one surface of the electrode 1 coated with the base material;

s103, coating the base material on one surface of the electrode 1 coated with the functional material again;

s104, coating a substrate material on the other electrode 1;

s105, bonding the base material surfaces of the two electrodes 1 obtained in S103 and S104 to obtain the weighing sensor;

the coating is specifically spraying or blade coating or spin coating or screen printing.

The invention also provides a preparation method of the intelligent floor capable of monitoring the grain weight of the granary in real time.

An intelligent floor capable of monitoring the weight of grains in a granary in real time is prepared by the following method:

s201, bonding the sensor array units on a substrate material at equal intervals by using a bonding material;

and S202, covering the other side of the sensor array unit bonded on the substrate material with a bonding material.

Further, the substrate material is one or a mixture of any several of polyethylene terephthalate, polyimide, polycarbonate and polyethylene oxide.

Further, the bonding material is any one of water-based screen printing machine glue, 3M7355, SY001, oily self-adhesive glue, WD-2000, double-sided adhesive tape and conductive silver paste.

Further, the thickness of the substrate material is 0.05-2 mm.

The invention also provides a use method of the intelligent floor capable of monitoring the grain weight of the granary in real time.

The intelligent floor can monitor the weight of grains in the granary in real time, and is paved on the bottom surface of the granary.

The invention also provides a method for calculating the weight of the grain in the granary by using the intelligent floor capable of monitoring the weight of the grain in the granary in real time.

An intelligent floor capable of monitoring the weight of grains in a granary in real time, wherein the formula for calculating the weight of the grains in the granary by the intelligent floor is as follows:

W_sum＝∑W_D

W_D＝W_S/R

R＝S_s/S_D

wherein, W_sumThe total weight of the grain is taken as the weight of the grain;

W_Dmicro-partition grain weight;

W_Sthe weight of the grain on the sensor array unit;

S_sis the area of the sensor array element;

S_Dis the micro-partition area.

Further, the micro-partition area calculation formula is as follows:

S_D＝S_Sum/N

wherein S is_SumThe bottom area of the granary;

and N is the number of the sensor array units.

According to the intelligent floor capable of monitoring the grain weight of the granary in real time, the sensor array units are bonded on the substrate material at equal intervals by the bonding material; adhesive material for the other side of the sensor array unit adhered to the substrate materialCovering and preparing. The sensor array unit is a weighing sensor, and the weighing sensor senses the external pressure and then the nano material (such as gold and silver nano material, PVDF, ZnO nano wire and BaTiO) of the functional material₃Nanomaterial, PbTiO₃Nano material, etc.) so that the resistance of the weight-sensitive layer is regularly changed along with the increase of pressure, and the nonlinear error of the resistance of the sensor along with the change of pressure is low, thereby realizing accurate weighing. The resistance change is generated inside the functional material forming the weight sensitive layer, so that the sensor is not easily influenced by the external environment temperature and the use environment humidity, and has stable performance.

The intelligent floor capable of monitoring the grain weight of the granary in real time, provided by the invention, is characterized in that a weighing sensing (sensor array unit) floor is laid on the ground of the granary, the floor consists of sensor arrays which are spaced at a certain distance, the bottom surface of the whole granary is evenly divided into N equal parts, each part of corresponding area is a micro-partition, and the area of each part is S_DBy calculating the sensor area S_sAnd S_DThe weight of the grain in the whole differential area can be obtained by detecting the weight of the grain above the sensor through the sensor acquisition circuit, and the weight of the grain in the whole granary is composed of N such differential areas. And N is the number of the sensors in the granary. Therefore, the weight of the grains in the whole granary can be calculated, and the formula of the weight of the grains in the granary is as follows:

W_sum＝∑W_D

W_D＝W_S/R

R＝S_s/S_D

wherein, W_sumThe total weight of the grain is taken as the weight of the grain;

W_Dmicro-partition grain weight;

W_Sthe weight of the grain on the sensor array unit;

S_sis the area of the sensor array element;

S_Dis the micro-partition area.

The micro-partition area calculation formula is as follows: s_D＝S_SumN; wherein S is_SumThe bottom area of the granary; and N is the number of the sensor array units.

In the calculation method, W_SDirectly measure, S_D、S_SumN and R can be constants or known data, so the calculation method is simple and reliable.

The weight of the grain in the granary can be directly detected through the sensor acquisition circuit, so that real-time monitoring can be realized, and the difficulty in granary management is reduced.

Compared with the prior art, the intelligent floor capable of monitoring the grain weight of the granary in real time and the preparation method thereof have the advantages that:

(1) accurate weight measurement and stable performance.

(2) Is convenient to manufacture and use.

(3) Real-time monitoring can be realized.

(4) The method provides the most basic and important acquisition end for realizing a grain Internet of things system.

Drawings

Fig. 1 is a schematic structural diagram of a load cell (sensor array unit) in an intelligent floor capable of monitoring the grain weight of a granary in real time.

Fig. 2 is a schematic diagram of the working principle of the load cell (sensor array unit) in the intelligent floor capable of monitoring the grain weight of the granary in real time provided by the invention.

Fig. 3 is a graph showing the resistance of the load cell (sensor array unit) in the intelligent floor capable of monitoring the grain weight of the granary in real time according to the present invention, which varies with the pressure.

Fig. 4 is a schematic layout view of the load cell (sensor array unit) in the intelligent floor capable of monitoring the grain weight of the granary in real time according to the present invention.

Fig. 5 is a schematic diagram of an intelligent floor micro-partition capable of monitoring the grain weight of a granary in real time according to the present invention.

In the figure, 1 is an electrode, 2 is an adhesion layer, and 3 is a weight-sensitive layer.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the following examples further describe the present invention in detail, and the following examples are only used for illustrating the present invention, but not for limiting the scope of the present invention.

The intelligent floor is composed of a plurality of sensor array units, and the sensor array units are spliced on the same plane to form the intelligent floor.