WO2020056785A1

WO2020056785A1 - Control system for electromagnet

Info

Publication number: WO2020056785A1
Application number: PCT/CN2018/107171
Authority: WO
Inventors: 邵磊
Original assignee: 南通明月电器有限公司
Priority date: 2018-09-20
Filing date: 2018-09-23
Publication date: 2020-03-26
Also published as: CN109148075A

Abstract

A control system for an electromagnet. The electromagnet comprises a metal frame, an iron core, a coil and a filler. The metal frame has a recessed portion, and a threaded hole is arranged at a bottom portion thereof. The iron core is installed at the metal frame by means of threads arranged at a lower end thereof. The coil comprising turns of a metal wire is wound around an outer surface of the iron core. The filler is provided at the center of the recessed portion of the metal frame. The control system comprises a magnetic force detection sensor, a current detection sensor, a controller, a serial port circuit and an adjustable resistor. The magnetic force detection sensor is embedded in a top end of the iron core to effectively detect a change in a magnetic force. The magnetic force detection sensor directly transmits detected data to the controller in real time. The adjustable resistor and the coil are connected in parallel. A control port of the adjustable resistor is connected to the controller. The above technical solution has a simple structure, can be used conveniently, and enables adjustment of magnetic force settings with respect to an electromagnet. Moreover, adjustment of a coil is performed by means of a current, thereby providing a stable magnetic force.

Description

Control system of electromagnet

Technical field

The invention relates to an electromagnet, in particular to a control system for an electromagnet.

Background technique

An electromagnet is a device that generates electricity by being energized. On the outside of the iron core is a conductive winding that matches its power. This current-carrying coil is magnetic like a magnet. It is also called an electromagnet. Electromagnets are used in many situations where adsorption is required, in some cases it is necessary to switch on or off the adsorbed material, and in some cases it is necessary to be able to control the adsorbed material with constant force. The existing electromagnet includes an electromagnet frame and an iron core disposed in the electromagnet frame, and a coil is wound around the iron core, but after use, it is found that most of the electromagnet is energized for a long time or after long-term use, the suction performance will change. The small size makes it difficult for production equipment to meet the requirements of other devices, resulting in unsatisfactory processing effects and increased costs. At the same time, the electromagnets need to be replaced after long-term use, which not only increases production costs, but also brings a lot of inconvenience to actual use.

Summary of the Invention

An object of the present invention is to provide a control system for an electromagnet, which is used to detect the magnitude of magnetic force in real time, and to make the suction force of the magnet more stable by adjusting.

A control system for an electromagnet. The electromagnet includes: a metal frame, an iron core, a coil, and a filler. The metal frame is concave, and a bottom is provided with a screw hole. The iron core is installed in the metal frame through a lower end screw. A coil made of metal wire is wound on the outer surface of the iron core, and a filler is provided in the center of the concave portion of the metal frame. The control system is composed of a magnetic force detection sensor, a current detection sensor, a controller, a serial port circuit, and an adjustable resistor composition,

The magnetic force detection sensor is embedded in the top of the iron core. In order to more effectively detect changes in magnetic force, the magnetic force sensor directly transmits detection data to the controller in real time;

The current detection sensor is used to detect the real-time current intensity of the operation of the electromagnet, and feedback the data to the controller for processing;

The adjustable resistor is connected in parallel with the coil, and the control port of the adjustable resistor is connected to the controller;

The serial port circuit is connected to the controller and is used to set the magnitude of the suction force of the coil.

Preferably, the controller is a programmable controller and performs data programming through a serial port circuit.

Preferably, the number of the magnetic force detection sensors is at least one, and the magnetic force detection sensors are installed at or around the core of the electromagnet.

Beneficial effect: The present invention is a control system for an electromagnet. The current of a coil is detected in real time by a current sensor, the current of the coil is protected by a controller, and the information is fed back to the controller by a magnetic sensor. The judgment of the preset program in the controller enables the controller to adjust the adjustable resistance to stabilize the data transmitted by the magnetic sensor. The suction force of the electromagnet is constant when the power is turned on, and the suction force will disappear directly when the power is turned off. The setting can instantaneously increase the suction force of the electromagnet, which meets the long-term use of the electromagnet, has good practical value, meets the actual use requirements, and improves the service life.

detailed description

A control system for an electromagnet. The electromagnet includes: a metal frame, an iron core, a coil, and a filler. The metal frame is concave, and a bottom is provided with a screw hole. The iron core is installed in the metal frame through a lower end screw. A coil made of a metal wire is wound on the outer surface of the iron core, and a filler is provided in the center of the concave portion of the metal frame. The control system is composed of a magnetic force detection sensor, a current detection sensor, a controller, a serial port circuit, and an adjustable resistor. composition,

This example is further optimized:

In this example, the controller is a programmable controller, and data is programmed through a serial circuit.

In this example, the number of the magnetic force detection sensors is at least one, and the magnetic force detection sensors are installed at or around the core of the electromagnet.

When the electromagnet is energized, whether the suction force detected by the magnetic force detection sensor is equal to the preset magnetic force of the controller, equals to indicate stability, and if it is not equal, the adjustable resistance is adjusted by the controller to change the current in the coil. Change the magnitude of the suction force. When the current exceeds the current preset threshold in the controller, directly control the adjustable resistor to stay still, and prompt through the fault light on the controller.

In summary, the current of the coil is detected in real time by the current sensor, the current of the coil is protected by the controller, the information is fed back to the controller by the magnetic sensor, and the control is determined by a preset program in the controller. The regulator adjusts the adjustable resistance to stabilize the data transmitted by the magnetic sensor. The suction force of the electromagnet is constant when the power is turned on, and the suction force will disappear directly when the power is turned off. At the same time, the suction force of the electromagnet can be set and the electromagnetic force can be increased instantaneously. The attraction of iron meets the long-term use of the electromagnet, has good practical value, meets the actual use needs, and improves the service life.

The above is only the preferred mode of the present invention. It should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, several similar deformations and improvements can be made. These should also be considered as the present invention. The scope of protection of invention textile fabrics.

Claims

A control system for an electromagnet. The electromagnet includes: a metal frame, an iron core, a coil, and a filler. The metal frame is concave, and a bottom is provided with a screw hole. The iron core is installed in the metal frame through a lower end screw. A coil made of a metal wire is wound on the outer surface of the iron core, and a filler is provided in the center of the concave portion of the metal frame. The control system is characterized by a magnetic force detection sensor, a current detection sensor, a controller, and a serial circuit. Composed of adjustable resistors,

The magnetic force detection sensor is embedded in the top of the iron core. In order to more effectively detect changes in magnetic force, the magnetic force sensor directly transmits detection data to the controller in real time;

The current detection sensor is used to detect the real-time current intensity of the operation of the electromagnet, and feedback the data to the controller for processing;

The adjustable resistor is connected in parallel with the coil, and the control port of the adjustable resistor is connected to the controller;

The serial port circuit is connected to the controller and is used to set the magnitude of the suction force of the coil.
The control system of an electromagnet according to claim 1, wherein the controller is a programmable controller and performs data programming through a serial circuit.

The control system for an electromagnet according to claim 1, wherein the number of the magnetic force detection sensors is at least one, and the magnetic force detection sensors are installed at or around the core of the electromagnet.