Multifunctional controller for material level of silo

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The multi-functional silo level controller, which integrates the STM32F103C8T6 main control board and multi-functional components, solves the problems of low measurement accuracy and poor real-time data feedback in existing silo level controllers, and realizes high-precision level monitoring and rich functional applications.

CN223591441UActive Publication Date: 2025-11-25SHANDONG AOBANG AUTOMATIC CONTROL TECH CO LTD

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Patent Information

Application Number: CN202520278289.7
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2025-02-20
Publication Date: 2025-11-25
Estimated Expiration: 2035-02-20

AI Technical Summary

Technical Problem

Existing silo level controllers are functionally limited, lack anti-interference mechanisms in their power supply, are highly susceptible to temperature signals and external magnetic fields, have low measurement accuracy, and cannot establish communication connections with host computers or touch screens, resulting in poor real-time data feedback and failing to meet practical application requirements.

Method used

Design a multi-functional silo level controller, using an STM32F103C8T6 main control board, integrating communication components, AD acquisition components, digital output components, digital input components, and power supply components. Combined with a temperature compensator and an opto-isolated RS485 communication port, external interference is reduced, and real-time communication and data transmission with the host computer are achieved.

Benefits of technology

It improves measurement accuracy, enables real-time status monitoring and data monitoring of silo material levels, meets various practical application needs, has high display accuracy, stable and reliable performance, and has high and low material level alarms and automatic dust removal functions.

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Patent Text Reader

Abstract

A multifunctional silo material level controller comprises a shell, a main control board is installed at the bottom of the shell through a plurality of self-tapping nuts, and the main control board is electrically connected with a communication assembly used for establishing communication connection between the main control board and an upper computer and between the main control board and a display operation panel respectively. The real-time monitoring of the operation state and data information of the equipment and the residual material weight parameter in the silo are realized; the AD acquisition assembly is used for acquiring signals of a weighing sensor outside the silo; the switching value output assembly is used for outputting a switching value signal, adopts a diode to perform reverse access protection on an output circuit, is internally provided with a relay output interface, and is provided with a piezoresistor to perform auxiliary protection on the relay output interface; the switching value input assembly is used for inputting a switching value signal, and a peripheral protection circuit is adopted to prevent an input circuit chip from being burnt out when high voltage is mistakenly accessed; and the power supply assembly is used for providing a stable power supply for the main control board and the AD acquisition assembly.

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Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of silo stock level multifunctional controller. BACKGROUND

[0002] Raw material silo is the warehouse of storing bulk materials, divided into two categories of agricultural silo and industrial silo;Agricultural silo is used to store grain, feed and other granular and powdery materials;Industrial silo is used to store bulk materials such as coke, cement, salt and sugar.

[0003] With more and more wide application of large-tonnage raw material silo in cement products, feed feeding, aquaculture and other industries, the use party has higher and higher requirements for the digitalization and precision of the remaining raw material inventory weight in the silo, not only to meet the precision required by actual application, but also to realize the data interconnection display and control function of mobile terminal.

[0004] And the existing silo stock level controller has single functionality, the power supply is not provided with anti-interference mechanism, is greatly affected by temperature signal and external magnetic field, resulting in low overall measurement accuracy;At the same time, there is no corresponding communication port, which cannot establish communication connection with host computer or touch screen for state monitoring or data monitoring, real-time data feedback is poor, and the functionality of the controller cannot meet the actual application requirements. UTILITY MODEL CONTENTS

[0005] The utility model embodiment provides a kind of silo stock level multifunctional controller, and the integrated control effect based on main control board, cooperate with multiple types of electrical components and functional components, integrate multiple categories of functional characteristics, reduce external electromagnetic interference and temperature change interference, can improve the overall measurement accuracy of controller, and with host computer establishes communication connection, real-time transmission of the data parameters detected to host computer, realizes the state monitoring and data monitoring of silo stock level, to enrich the various functions of controller, meet actual application requirements, solve the problems existing in prior art.

[0006] The technical scheme adopted by the utility model to solve the above technical problems is:

[0007] A kind of silo stock level multifunctional controller, including shell, main control board is installed in shell bottom by multiple self-tapping nut, electrical connection has on main control board:

[0008] Communication component, the communication component is used to establish communication connection between main control board and host computer, main control board and display operation board respectively, to realize the real-time monitoring of equipment running state and data information and the remaining material weight parameter in silo;

[0009] AD acquisition component, the AD acquisition component is used to acquire silo external weighing sensor signal, and signal conversion processing is carried out;

[0010] The switch output component is used for outputting a switch signal, adopts a diode pair output circuit for reverse access protection, has a built-in relay output interface, and is provided with a voltage-dependent resistor for auxiliary protection of the relay output interface, and can directly drive a DC 24V or AC 220V external load.

[0011] The switch input component is used for inputting a switch signal, and adopts a peripheral protection circuit to prevent the input circuit chip from being burnt due to error access of high voltage.

[0012] The power supply component is used for providing a stable power supply for the main control board and the AD acquisition component.

[0013] The main control board is of a model of STM32F103C8T6, and has a working temperature of -40℃-85℃, and is provided with a temperature compensator inside, which is used for eliminating weight value drift caused by external temperature change.

[0014] The communication component includes two-way photoelectric isolation RS485 communication ports, which are respectively arranged between the main control board and the upper computer and between the main control board and the display operation board.

[0015] The AD acquisition component is of a model of CS5530, and is provided with 20 pins, wherein the first pin and the second pin of the AD acquisition component are connected with the main control board; the AD acquisition component is a 24-bit low-temperature drift integrated amplification AD converter, and has a working temperature of -20℃-70℃; the peripheral circuit is provided with a high-precision, low-temperature drift resistor and a high-precision filter capacitor, so that the weighing controller will not have temperature drift in a low-temperature or high-temperature state.

[0016] The AD acquisition component has one AD channel, and is connected with the main control board through optical coupling isolation, so that the weighing controller will not have weight value drift when suffering from external strong electromagnetic interference.

[0017] The switch output component has four output points, and uses independent 5-wire plug-in screw type PCB special wiring terminals.

[0018] The switch input component has four input points, and uses independent 5-wire plug-in screw type PCB special wiring terminals.

[0019] The shell is a waterproof shell.

[0020] The utility model discloses a above -mentioned structure passes through the communication assembly between main control board and host computer, main control board and display operating board respectively establishes communication connection, to realize the real -time monitoring and data information of equipment operating state and the residual material weight parameter in silo, and AD acquisition component gathers the weighing sensor signal outside silo, and carries out conversion processing to signal, and switch quantity output component exports switch quantity signal, adopts diode to carry out reverse access protection to output circuit, and the built -in relay output interface is equipped with the auxiliary protection of pressure sensitive resistance to relay output interface, can directly drive DC24V or AC220V external load, and the power component is used for providing stable power supply for main control board and AD acquisition component, has the advantages of accurate practical, safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0021] Fig. 1 It is the structural diagram of the utility model.

[0022] Fig. 2 It is the electrical schematic diagram of the main control board of the utility model.

[0023] Fig. 3 It is the electrical schematic diagram of the AD conversion component of the utility model. DETAILED DESCRIPTION

[0024] To clearly illustrate the technical features of the scheme, the utility model is described in detail below through specific implementation ways, and in conjunction with its drawings.

[0025] As shown in Figs. 1-3 A silo material level multifunctional controller, including the casing, is installed with main control board through a plurality of self-tapping nut at the bottom of casing, and is electrically connected with on the main control board:

[0026] Communication component, the communication component is used for establishing communication connection between main control board and host computer, main control board and display operating board respectively, to realize the real -time monitoring and data information of equipment operating state and the residual material weight parameter in silo;

[0027] AD acquisition component, the AD acquisition component is used for gathering the weighing sensor signal outside silo, and carries out conversion processing to signal;

[0028] Switch quantity output component, the switch quantity output component is used for exporting switch quantity signal, adopts diode to carry out reverse access protection to output circuit, and the built -in relay output interface is equipped with the auxiliary protection of pressure sensitive resistance to relay output interface, can directly drive DC24V or AC220V external load;

[0029] Switch quantity input component, the switch quantity input component is used for inputting switch quantity signal, and the peripheral protection circuit is used to prevent the input circuit chip from being burnt when wrong high voltage is accessed.

[0030] A power supply component is arranged for providing stable power supply for the master control board and the AD acquisition component.

[0031] The master control board is of the model STM32F103C8T6, and has a working temperature of -40 DEG C to 85 DEG C; and a temperature compensator is arranged in the master control board, and the temperature compensator is used for eliminating weight value drift caused by external temperature change.

[0032] The communication component comprises two-way photoelectric isolation RS485 communication ports, which are respectively arranged between the master control board and the upper computer and between the master control board and the display operation board.

[0033] The AD acquisition component is of the model CS5530, and has 20 pins; the first pin and the second pin of the AD acquisition component are connected with the master control board; the AD acquisition component is a 24-bit low-temperature drift integrated amplification AD converter, and has a working temperature of -20 DEG C to 70 DEG C; and high-precision, low-temperature drift resistors and high-precision filter capacitors are arranged in the peripheral circuit, so that the weighing controller will not have temperature drift in a low-temperature or high-temperature state.

[0034] The AD acquisition component has one AD channel, and is connected with the master control board through optical coupling isolation, so that the weighing controller will not have weight value drift when suffering from external strong electromagnetic interference.

[0035] The switch output component has four output contacts, and uses independent 5-wire plug-in screw type PCB special wiring terminals.

[0036] The switch input component has four input contacts, and uses independent 5-wire plug-in screw type PCB special wiring terminals.

[0037] The shell is a waterproof shell.

[0038] The working principle of the silo material level multifunctional controller in the embodiment of the utility model is as follows: based on the integrated control of the master control board, cooperating with multiple types of electrical elements and functional components, integrating multiple types of functional characteristics, reducing external electromagnetic interference and temperature change interference, the overall measurement accuracy of the controller can be improved, and the upper computer is connected in communication, the detected data parameters are transmitted to the upper computer in real time, the state monitoring and data monitoring of the silo material level are realized, so that various functions of the controller are enriched, and various different actual application requirements are met.

[0039] The controller of the application has high display precision, stable and reliable performance, and has functions of high and low material level alarm, automatic dust removal, etc. In addition, the display control component and the card recognition component are displayed on the controller. The display control component is a circuit board with LED nixie tube display, which is connected with the main control board by using special wiring. The card recognition component and the display control component are designed integrally, and are connected with the main control board by using special wiring. The performance is stable and reliable, and the reaction is sensitive.

[0040] In the overall scheme, the main control board is installed at the bottom of the shell through a plurality of self-tapping nuts, and is electrically connected with a communication component, an AD acquisition component, a switching value output component, a switching value input component and a power supply component. The communication component is used to establish communication connection between the main control board and the host computer, and between the main control board and the display operation board, so as to realize real-time monitoring of the running state and data information of the equipment and display of the remaining material weight in the silo. The AD acquisition component is used to acquire the signal of the weighing sensor outside the silo and convert and process the signal. The switching value output component is used to output switching value signal, adopts diode reverse connection protection for the output circuit, has built-in relay output interface, and is provided with a pressure-sensitive resistor for auxiliary protection of the relay output interface, and can directly drive DC 24V or AC 220V external load. The switching value input component is used to input switching value signal, and adopts peripheral protection circuit to prevent input circuit chip from being burned out due to error access to high voltage. The power supply component is used to provide stable power supply for the main control board and the AD acquisition component.

[0041] For the main control board, it is responsible for circuit control, information acquisition, processing and display of the whole multifunctional controller, and is connected with other functional components through direct connection or isolation. The model of the main control board is STM32F103C8T6, and the working temperature is-40℃-85℃. A temperature compensator is arranged in the main control board, which is used to eliminate the weight value drift caused by external temperature change.

[0042] Preferably, the communication component includes two-way photoelectric isolation RS485 communication ports, which are respectively arranged between the main control board and the host computer, and between the main control board and the display operation board. Real-time monitoring of state data and display of remaining material weight are realized.

[0043] Preferably, the model of the AD acquisition component is CS5530, and 20 pins are arranged on the AD acquisition component. The first pin and the second pin of the AD acquisition component are connected with the main control board. The AD acquisition component is a 24-bit low-temperature drift integrated amplification AD converter, and the working temperature is-20℃-70℃. The peripheral circuit is matched with high-precision, low-temperature drift resistor and high-precision filter capacitor, so that the weighing controller will not drift at low or high temperature.

[0044] Generally, the AD acquisition component has one path, adopts optical coupling isolation and is connected with the main control board, avoids the phenomenon of weighing value drift of the weighing controller when suffering from external strong electromagnetic interference; in order to facilitate maintenance, the AD signal access uses independent 5-wire plug-in screw type PCB special terminal.

[0045] Preferably, for the switch quantity input component and the switch quantity output component, independent 5-wire plug-in screw type PCB special terminal is used, so that the controller has switch quantity output and input test functions, facilitates installation and debugging, and when problems occur, maintenance personnel can quickly and accurately determine the problem, and work efficiency is improved.

[0046] It is particularly pointed out that the power supply component is composed of an AC220V isolation transformer and a rectifier and voltage stabilizing circuit, and is designed as a three-way isolation power supply. The AC220V isolation transformer has the advantages of no noise, small leakage magnetic, small no-load current, low iron loss, low overload fluctuation, high efficiency, small internal resistance, low copper loss, low temperature rise, high electric strength, good flame resistance, short circuit resistance, good lightning impact resistance, etc., so as to ensure to provide stable and reliable input power for the multifunctional controller.

[0047] In summary, the multifunctional controller for the silo material level in the embodiment of the utility model is based on the integrated control of the main control board, cooperates with multiple types of electrical elements and functional components, integrates multiple types of functional characteristics, reduces external electromagnetic interference and temperature change interference, can improve the overall measurement accuracy of the controller, and establishes communication connection with the upper computer, transmits the detected data parameters to the upper computer in real time, realizes the state monitoring and data monitoring of the silo material level, thereby enriches various functions of the controller, meets various different actual application requirements.

[0048] The above specific embodiments cannot be regarded as the limitation of the protection scope of the utility model, and any alternative improvement or change made by the person skilled in the art to the embodiment of the utility model falls within the protection scope of the utility model.

[0049] The not detailed parts of the utility model are the known technology of the person skilled in the art.

Claims

1. A silo inventory multifunctional controller characterized by, The shell is provided with a main control board at the bottom thereof and is mounted with a plurality of self-tapping nuts, and the main control board is electrically connected with The communication assembly is used for establishing communication connection between the main control board and the host computer and between the main control board and the display operation board respectively, so as to realize real-time monitoring of the running state and data information of the equipment and the residual material weight parameter in the silo. The AD acquisition assembly is used for acquiring the signal of the weighing sensor outside the silo and converting and processing the signal. The on-off output assembly is used for outputting on-off signals, adopting a diode to reversely connect the output circuit for protection, internally providing a relay output interface and being provided with a pressure-sensitive resistor for auxiliary protection of the relay output interface, and being capable of directly driving a DC 24V or AC 220V external load. The on-off input assembly is used for inputting on-off signals, adopting a peripheral protection circuit to prevent the input circuit chip from being burnt due to error connection of high voltage. The power supply assembly is used for providing stable power supply for the main control board and the AD acquisition assembly.

2. A silo inventory multifunctional controller according to claim 1, characterized in that: The main control board is of the model STM32F103C8T6, has a working temperature of -40℃-85℃, and is internally provided with a temperature compensator for eliminating weight value drift caused by external temperature change.

3. A silo inventory multifunctional controller according to claim 1, characterized in that: The communication assembly comprises two RS485 communication ports of photoelectric isolation, which are respectively arranged between the main control board and the host computer and between the main control board and the display operation board.

4. A silo inventory multifunctional controller according to claim 1, characterized in that: The AD acquisition assembly is of the model CS5530, is provided with 20 pins, and the first pin and the second pin thereof are connected with the main control board.

5. A silo inventory multifunctional controller according to claim 4, characterized in that: The AD acquisition assembly is a 24-bit low-temperature drift integrated amplification AD converter, has a working temperature of -20℃-70℃, and is provided with a high-precision, low-temperature drift resistor and a high-precision filter capacitor in the peripheral circuit, so as to ensure that the weighing controller will not appear temperature drift in a low-temperature or high-temperature state.

6. A silo inventory multifunctional controller according to claim 1, characterized in that: The AD acquisition assembly has one AD channel, is connected with the main control board through optical coupling isolation, and avoids the phenomenon of weight value drift of the weighing controller when it is subjected to external strong electromagnetic interference.

7. A silo inventory multifunctional controller according to claim 1, characterized in that: The output contact of the on-off output assembly is 4-way, and an independent 5-wire plug-in screw type PCB special terminal is used.

8. A silo inventory multifunctional controller according to claim 1, characterized in that: The input contact of the on-off input assembly is 4-way, and an independent 5-wire plug-in screw type PCB special terminal is used. The shell is a waterproof shell.