Electrostatic sensor control device

Abstract

The utility model belongs to the technical field of material conveying control, and relates to an electrostatic sensor control device, wherein the main structure comprises a monitoring terminal, a PLC controller, an electrostatic sensor and a pneumatic valve, wherein the monitoring terminal is connected with the PLC controller and the electrostatic sensor, and the PLC controller is connected with the electrostatic sensor and the pneumatic valve; the pneumatic valve and the electrostatic sensor are both installed on a powder material conveying pipeline; the monitoring terminal is responsible for data processing and monitoring, the electrostatic sensor is responsible for monitoring material flow and quality, the pneumatic valve is responsible for regulating material flow, and the PLC controller as a core control unit coordinates the operations between various functional structures, and the control device can realize real-time monitoring and control of the powder material conveying flow and quality, and realize automatic control of the entire system.

Description

Technical Field

[0001] The utility model belongs to the technical field of material conveying control and relates to an electrostatic sensor control device. Background Art

[0002] Electrostatic sensor control devices play an important role in many industrial applications, especially those involving the handling and transportation of powdered and granular materials; these occasions include but are not limited to the chemical, pharmaceutical, food processing, powder metallurgy and building materials industries. The main task of the electrostatic sensor control device is to monitor and control the flow and quality of materials in real time to ensure the efficiency, stability and safety of the production process. Static electricity is a physical phenomenon that is prevalent in nature. Especially in the process of material handling and transportation, the friction, collision and other actions of the material will generate static electricity. Electrostatic sensors use this principle to monitor the flow state and characteristics of materials by detecting and analyzing the electrostatic signals generated during the material process.

[0003] With the improvement of industrial automation and intelligence, the demand for precise control of flow and quality in material handling and transportation is increasing; this is not only related to production efficiency and product quality, but also to production safety. For example, dust explosion is a major safety hazard in powder material handling, and electrostatic sensors can warn of potential explosion risks by monitoring the accumulation of static charges. Although electrostatic detection technology has the advantages of non-contact and sensitivity, it also faces many challenges in practical applications, such as signal interference, the impact of changes in environmental conditions (such as humidity and temperature) on measurement accuracy, and how to accurately convert the detected electrostatic signals into material flow and quality information. To address the above challenges, electrostatic sensor control devices are moving towards higher integration and intelligence. This includes the use of advanced signal processing algorithms and technologies to reduce interference, improve the signal-to-noise ratio of signals, and use artificial intelligence and machine learning technologies to extract useful information from complex data to achieve more accurate flow and quality control. However, the existing technology lacks a control device specifically for electrostatic sensors, resulting in a low degree of intelligent control of electrostatic sensors. In the prior art, Chinese patent CN 201410851148.6 discloses an electrostatic sensor, including a sensing unit and a control unit, wherein the sensing unit includes at least one first sensing element, and at least two first electrodes are arranged at both ends of the at least one first sensing element and are electrically connected to the at least one first sensing element, the at least one first sensing element is a one-dimensional semiconductor nanostructure, the absolute value of the steepness of the change in conductivity of the one-dimensional semiconductor nanostructure to the movement of the Fermi surface position is approximately greater than 10-3, when an object with static electricity approaches the first sensing element, the resistance of the first sensing element changes; the control unit is electrically connected to the at least one first sensing element through a wire, and measures the resistance of the at least one first sensing element after applying a voltage to the at least one first sensing element and outputs a resistance signal.

[0004] Chinese patent CN201410852115.3 discloses an electrostatic sensor, including a sensing unit and a control unit, the sensing unit including at least one first sensing element, and at least two first electrodes arranged at both ends of the at least one first sensing element and electrically connected to the at least one first sensing element, the at least one first sensing element is a one-dimensional semiconductor nanostructure, the distance between the Fermi surface of the one-dimensional semiconductor nanostructure and the state density singularity is 30 to 300 meV, when an object with static electricity approaches the first sensing element, the resistance of the first sensing element changes; the control unit is electrically connected to the at least one first sensing element through a wire, and measures the resistance of the at least one first sensing element after applying a voltage to the at least one first sensing element and outputs a resistance signal.

[0005] Chinese patent CN201880081959.9 discloses an electrostatic sensor, which has a first electrode group, which has a plurality of electrodes; a second electrode group, which has a plurality of electrodes adjacent to the electrodes of the first electrode group; a detection circuit, which is respectively connected to electrodes selected from the electrodes of the first electrode group and the electrodes of the second electrode group, and has a first AC power supply and a current measuring unit; a second AC power supply, which is connected to non-selected electrodes not selected from the electrodes of the first electrode group and the electrodes of the second electrode group; and a control unit, the AC generated in the first AC power supply and the AC generated in the second AC power supply are of the same frequency and the same phase, and the control unit selects the electrodes connected to the detection circuit from the electrodes of the first electrode group and the electrodes of the second electrode group in turn and connects them to the detection circuit, thereby detecting the position of the object to be detected based on the current detected by the current measuring unit of the detection circuit. However, the above-mentioned electrostatic sensor lacks an intelligent control device, resulting in low measurement accuracy of the electrostatic sensor. Utility Model Content

[0006] The purpose of the utility model is to overcome the shortcomings of the prior art, solve the technical problem that the electrostatic sensor measurement accuracy is not high due to the lack of an intelligent control device, and provide an electrostatic sensor control device.

[0007] In order to achieve the above-mentioned purpose, the utility model provides an electrostatic sensor control device, whose main structure includes a monitoring terminal, a PLC controller, an electrostatic sensor and a pneumatic valve. The monitoring terminal is connected to the PLC controller and the electrostatic sensor, and the PLC controller is connected to the electrostatic sensor and the pneumatic valve. The electrostatic sensor is used to monitor the conveying flow rate and quality of powdered materials; the pneumatic valve is used to control the conveying flow rate of materials; the pneumatic valve and the electrostatic sensor are both installed on the powdered material conveying pipeline, and the monitoring terminal monitors the conveying flow rate and quality of the powdered materials in real time, and provides alarm and control signals according to needs; the electrostatic sensor is a combination structure of electrostatic sensors with multiple ring structures, and the electrostatic sensor is installed in the powdered material conveying pipeline to detect and monitor the flow rate and quality of materials; the electrostatic sensor sends the detected data to the monitoring terminal for real-time monitoring and analysis; the number of pneumatic valves corresponds to the number of electrostatic sensors, and the pneumatic valves are installed in front of the electrostatic sensors. The materials first pass through the pneumatic valves and then pass through the electrostatic sensors; according to the instructions of the monitoring terminal, the pneumatic valve adjusts the flow rate of the material by adjusting the size of the valve inlet opening. The PLC controller is the core control unit of the entire control device. It is connected to the monitoring terminal, electrostatic sensor and pneumatic valve, and is responsible for real-time data interaction and the transmission of control instructions. The PLC controller controls the operation of the electrostatic sensor and pneumatic valve according to the requirements of the monitoring terminal to achieve precise control of material flow and quality.

[0008] The pneumatic valve described in the utility model comprises a cylinder, a cylinder head, a valve body, a valve inlet, a cylinder connecting rod, a valve body connecting rod, a plunger body, a sealing gasket, a rotating scale and a handle; a cylinder head is arranged at the front end of the cylinder, one end of the valve body is arranged as the valve inlet, a cylinder connecting rod is arranged at the front end of the cylinder head, the cylinder connecting rod is hinged with the valve body connecting rod, the valve body connecting rod is threadedly connected with one end of the plunger body, the plunger body is connected with the valve body through a sealing gasket, a rotating scale is arranged on the sealing gasket, and a handle is welded on the valve body connecting rod; the rotating scale indicates the rotation angle of the plunger body, and the plunger body is tightly connected to the inner wall of the valve body.

[0009] The PLC controller described in the utility model also includes a base, which is used to hold the PLC controller. An electrostatic releaser is also provided on the base. Four ground pins are installed at the bottom of the base. Grounding wires are connected to the inside of the ground pins. The grounding wires are connected to the electrostatic releaser on the base, and the electrostatic releaser is connected to the input / output interface of the PLC controller.

[0010] Compared with the prior art, the utility model has the following advantages: the monitoring terminal is responsible for data processing and monitoring, the electrostatic sensor is responsible for monitoring the material flow and quality, the pneumatic valve is responsible for adjusting the material flow, and the PLC controller as the core control unit coordinates the operations between the various functional structures. The control device can realize real-time monitoring and control of the powder material conveying flow and quality, and realize automatic control of the entire system. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 The utility model is a schematic diagram of the main structure principle of the electrostatic sensor control device.

[0012] Figure 2 The utility model is a schematic diagram of the main structure principle of the pneumatic valve.

[0013] Figure 3 This is a schematic diagram of the main structural principle of the PLC controller involved in the utility model. DETAILED DESCRIPTION

[0014] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] Embodiment 1:

[0016] The present embodiment provides an electrostatic sensor control device, whose main structure includes: a monitoring terminal 1, an electrostatic sensor 2, a pneumatic valve 3, and a PLC controller 4; wherein the monitoring terminal 1 is connected to the PLC controller 4 and the electrostatic sensor 2, and the PLC controller 4 is connected to the electrostatic sensor 2 and the pneumatic valve 3; the pneumatic valve and the electrostatic sensor are both installed on the powder material conveying pipeline, the electrostatic sensor 2 is used to detect the powder material conveying flow and quality, the number of the pneumatic valves 3 corresponds to the electrostatic sensor, the pneumatic valves are located in front of the electrostatic sensor, and the material first passes through the pneumatic valve and then passes through the electrostatic sensor; its working principle and beneficial effects are: in use, the monitoring terminal 1 is responsible for the monitoring and counting of the entire control device According to the processing, the data from the electrostatic sensor 2 and the pneumatic valve 3 are received and processed by connecting with the PLC controller 4; the monitoring terminal 1 monitors the conveying flow and quality of the powdered material in real time, and provides alarm and control signals according to the needs; multiple electrostatic sensors 2 are installed in the powdered material conveying pipeline to detect and monitor the flow and quality of the material; the electrostatic sensor 2 sends the data to the monitoring terminal 1 for real-time monitoring and analysis; the number of pneumatic valves 3 corresponds to the electrostatic sensor, and the pneumatic valve 3 is located in front of the electrostatic sensor. The material first passes through the pneumatic valve 3 and then passes through the electrostatic sensor; according to the instructions of the monitoring terminal 1, the pneumatic valve 3 adjusts the size of the valve inlet to adjust the flow of the material. The PLC controller 4 is the core control unit of the entire control device, which is connected with the monitoring terminal 1, the electrostatic sensor 2 and the pneumatic valve 3, and is responsible for real-time data interaction and the transmission of control instructions; the PLC controller 4 controls the operation of the electrostatic sensor 2 and the pneumatic valve 3 according to the requirements of the monitoring terminal 1 to achieve precise control of the material flow and quality. Through the above functional allocation, the control device realizes real-time monitoring and control of the powder material conveying flow and quality; the monitoring terminal 1 is responsible for data processing and system monitoring, the electrostatic sensor 2 is responsible for monitoring the material flow and quality, the pneumatic valve 3 is responsible for adjusting the material flow, and the PLC controller 4 as the core control unit coordinates the operations between the various modules to realize the automatic control of the entire system.

[0017] The pneumatic valve 3 involved in this embodiment includes a cylinder 5, a cylinder head 6, a valve body 7, a valve inlet 8, a cylinder connecting rod 9, a valve body connecting rod 10, a plunger body 11, a sealing gasket 12, a rotation scale 13, and a handle 14; the front end of the cylinder 5 is provided with a cylinder head 6, one end of the valve body 7 is provided as the valve inlet 8, the front end of the cylinder head 6 is provided with a cylinder connecting rod 9, the cylinder connecting rod 9 is hinged with the valve body connecting rod 10, the valve body connecting rod 10 is threadedly connected with one end of the plunger body 11, the plunger body 11 is connected to the valve body 7 through a sealing gasket 12, a rotation scale 13 is provided on the sealing gasket 12, and a handle 14 is welded on the valve body connecting rod 10; the rotation scale 13 indicates the rotation angle of the plunger body 11, and the plunger body 11 is tightly connected to the inner wall of the valve body 7. The pneumatic valve 7 is a pneumatic valve with a tight connection, and the handle 14 is used as a backup. When the cylinder 5 fails, the powder flow in the valve body 7 is manually adjusted. Its working principle and beneficial effects are as follows: in use, the cylinder 5 is used as the driving part of the pneumatic valve, and the cylinder connecting rod 9 is pushed to move by controlling the air pressure in the cylinder 5; the movement of the cylinder connecting rod 9 is transmitted to the plunger body 11 through the valve body connecting rod 10 hinged thereto; the plunger body 11 is connected to the valve body connecting rod 10 by threads, and this connection method allows the plunger body 11 to rotate under the drive of the valve body connecting rod 10; as the plunger body 11 rotates, the tightness between it and the inner wall of the valve body 7 changes, thereby adjusting the opening size at the valve inlet 8, and realizing precise control of the powder flow through the valve body 7. When the cylinder 5 fails or the valve needs to be adjusted without an external power source, it can be manually operated by the handle 14; the handle 14 is welded to the valve body connecting rod 10, and by rotating the handle 14, the rotation control of the plunger body 11 can also be realized, thereby adjusting the powder flow. Precise flow control: Through precise pneumatic control and rotation adjustment of the plunger body 11, the pneumatic valve of this embodiment can achieve precise control of powder flow, which is especially beneficial for process flows that require strict flow control. Flexible operation mode: It can be operated automatically through pneumatic control, or it can be manually adjusted through the handle 14 under certain circumstances, which increases the operational flexibility and reliability of the system. Good sealing performance: The close connection between the plunger body 11 and the valve body 7, coupled with the setting of the sealing gasket 12, ensures good sealing of the valve during the adjustment process and avoids material leakage problems. Intuitive operation instructions: The rotating scale 13 provides the operator with an intuitive indication of the rotation angle of the plunger body 11, which is convenient for the operator to accurately grasp the valve opening and further improves the accuracy of flow control.

[0018] The pneumatic valve design provided in this embodiment has beneficial effects such as precise flow control, flexible operation, good sealing and intuitive operation instructions, and is suitable for scenarios where the flow of powders or other materials is precisely controlled in a variety of industrial processes.

[0019] The PLC controller 4 involved in this embodiment also includes a base, which is used to hold the PLC controller. An electrostatic releaser 18 is also provided on the base. Four ground pins 16 are installed at the bottom of the base 15. A grounding wire 17 is connected to the inside of the ground pin 16. The grounding wire 17 is connected to the electrostatic releaser 18, and the electrostatic releaser 18 is connected to the input / output interface of the PLC controller 4. Its working principle and beneficial effects are as follows: in use, four ground pins 16 are installed on the base 15 of the PLC controller 4, and a grounding wire 17 is connected to the inside of the ground pin 16, so that the grounding wire 17 is connected to the electrostatic releaser 18, and the electrostatic releaser 18 is connected to the input / output interface of the PLC controller 4. The main function of the electrostatic releaser 18 is to detect and release the electrostatic energy accumulated in the system to prevent safety accidents caused by static electricity accumulation, such as explosions caused by electrostatic discharge or sparks; when the electrostatic releaser 18 detects static electricity and releases it, a signal is generated; this signal is transmitted to the PLC controller through the connection with the input / output interface of the PLC controller 4; the function of the grounding wire 17 is to ensure that when the electrostatic releaser 18 is working, the electrostatic energy can be safely and effectively transmitted to the ground to prevent static electricity accumulation from causing damage to equipment or personnel; the PLC controller 4 executes the preset control logic according to the signal received from the electrostatic releaser 18; this may include sounding an alarm, stopping the operation of related equipment, or implementing other safety measures to ensure the safe operation of the system.

[0020] This embodiment reduces the risk of safety accidents caused by static electricity by timely detecting and releasing static electricity, providing a higher level of safety protection for workers and equipment; connecting the static discharger to the PLC controller realizes automated control of static electricity detection and release, improving the operating efficiency and response speed of the system; through the design of the grounding wire, it ensures that static electricity can be released safely and effectively, increasing the reliability and stability of the system; the PLC controller can execute complex control logic according to the static electricity release situation, including alarms, shutdowns, etc., enhancing the adaptability and flexibility of the system.

[0021] This embodiment combines the electrostatic releaser with the PLC controller and uses a grounding wire to ensure the safe release of static electricity, thereby achieving a high-safety, high-efficiency and high-reliability control device design, which is suitable for industrial environments that require precise control and high safety standards.

[0022] Embodiment 2:

[0023] This embodiment is an application experiment of an electrostatic sensor control device. The control device of Example 1 is installed in a powder material conveying system, and the PLC control parameters are set, and the system runs automatically. Compared with the traditional manual adjustment of powder flow, the electrostatic sensor control device can more accurately control the conveying flow and quality of powdered materials. The use of an electrostatic releaser significantly improves the safety of operation and reduces the risk of explosion caused by electrostatic discharge and possible sparks. Automated control significantly improves operating efficiency, reduces the need for manual adjustment, and makes the system run more smoothly. The overall reliability and stability of the system are improved, reducing failures and downtime caused by factors such as static electricity accumulation.

[0024] Experiments have shown that the electrostatic sensor control device provided in this embodiment has significant advantages in terms of precise control, safety, efficiency and reliability, and is suitable for industrial environments that require high safety standards and precise control.

Claims

1. An electrostatic sensor control device, characterized in that: The main structure includes a monitoring terminal, a PLC controller, an electrostatic sensor and a pneumatic valve. The monitoring terminal is connected to the PLC controller and the electrostatic sensor, and the PLC controller is connected to the electrostatic sensor and the pneumatic valve. The pneumatic valve and the electrostatic sensor are both installed on the powder material conveying pipeline. The pneumatic valve includes a cylinder, a cylinder head, a valve body, a valve inlet, a cylinder connecting rod, a valve body connecting rod, a plunger body, a sealing gasket, a rotating scale and a handle. The front end of the cylinder is provided with a cylinder head, one end of the valve body is provided as the valve inlet, the front end of the cylinder head is provided with a cylinder connecting rod, the cylinder connecting rod is hinged to the valve body connecting rod, the valve body connecting rod is threadedly connected to one end of the plunger body, the plunger body is connected to the valve body through a sealing gasket, a rotating scale is provided on the sealing gasket, and a handle is welded on the valve body connecting rod; the rotating scale indicates the rotation angle of the plunger body, and the plunger body is tightly connected to the inner wall of the valve body.

2. The electrostatic sensor control device according to claim 1, characterized in that: The PLC controller also includes a base, which is used to hold the PLC controller. The base is also provided with an electrostatic releaser. Four ground pins are installed at the bottom of the base. The inside of the ground pins is connected to a grounding wire, which is connected to the electrostatic releaser on the base, and the electrostatic releaser is connected to the input / output interface of the PLC controller.

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