CN111383815A - Electromagnet control device, control method and electromagnetic relay - Google Patents
Electromagnet control device, control method and electromagnetic relay Download PDFInfo
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- CN111383815A CN111383815A CN202010134425.7A CN202010134425A CN111383815A CN 111383815 A CN111383815 A CN 111383815A CN 202010134425 A CN202010134425 A CN 202010134425A CN 111383815 A CN111383815 A CN 111383815A
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- electromagnet
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F7/00—Magnets
- H01F7/06—Electromagnets; Actuators including electromagnets
- H01F7/064—Circuit arrangements for actuating electromagnets
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/64—Driving arrangements between movable part of magnetic circuit and contact
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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
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- Relay Circuits (AREA)
Abstract
The invention discloses an electromagnet control device, which comprises a control device, a duty ratio adjusting device and a detection device, wherein the control device is respectively and electrically connected with a power supply, an electromagnet, the duty ratio adjusting device and the detection device; the duty ratio adjusting device is used for outputting a duty ratio output adjusting signal to the control device, and the control device responds to the received duty ratio output adjusting signal and adjusts the electrifying time of the electromagnet and the output duty ratio corresponding to the electrifying time; the detection device is used for detecting the current/voltage output to the electromagnet by the control device and feeding back a detection signal to the control device, the control device judges whether the current working state of the electromagnet meets a preset condition or not according to the received detection signal, and if not, the signal output is adjusted. The invention improves the control structure of the electromagnet through innovation, controls the force change of the electromagnet in the working motion, reduces the heating value of the electromagnet in the working process, and is beneficial to reducing energy consumption and prolonging the service life of the electromagnet.
Description
Technical Field
The invention relates to the technical field of electromagnets, in particular to an electromagnet control device, a control method and an electromagnetic relay.
Background
At present, the control of direct current electromagnet on the market is mostly that the circular telegram or the outage of electromagnet is controlled with simple by relay or solid-state relay, but because the intrinsic electromagnetic curve characteristic of electromagnet, when at work, the electromagnet is by the distal end when beginning to start, its magnetic force degree is minimum state, need the coil to have great power this moment, and after the electromagnet moved in place, its magnetic force degree is the biggest state, the great power of electromagnet coil can cause the electromagnet to generate heat very greatly this moment, the temperature rise is very fast, lead to the electromagnet to burn out because of generating heat greatly easily.
Disclosure of Invention
The invention provides an electromagnet control device, a control method and an electromagnetic relay, aiming at solving the technical problem of the existing electromagnet.
In order to solve the above technical problem, an embodiment of the present invention provides an electromagnet control device, including a control device, a duty ratio adjusting device, and a detection device, where the control device is electrically connected to a power supply, an electromagnet, the duty ratio adjusting device, and the detection device, respectively;
the duty ratio adjusting device is used for outputting a duty ratio output adjusting signal to the control device, and the control device responds to the received duty ratio output adjusting signal and adjusts the electrifying time of the electromagnet and the output duty ratio corresponding to the electrifying time;
the detection device is used for detecting the current/voltage output to the electromagnet by the control device and feeding back a detection signal to the control device, the control device judges whether the current working state of the electromagnet meets a preset condition or not according to the received detection signal, and if not, the signal output is adjusted.
Preferably, the electromagnet control device further comprises a power supply protection circuit, and the output end of the power supply is electrically connected with the power supply end of the control device through the power supply protection circuit.
As a preferred scheme, the control device comprises a single chip microcomputer, a driving circuit and an output MOS transistor, wherein an output end of the single chip microcomputer is electrically connected with an input end of the driving circuit, an output end of the driving circuit is electrically connected with an input end of the output MOS transistor, and output ends of the MOS transistors are respectively electrically connected with the electromagnet and the detection device.
Preferably, the duty ratio adjusting means comprises a dialer.
Preferably, the duty cycle adjusting means comprises a coded digital switch.
Preferably, the detection device comprises a voltage sampling unit.
Preferably, the power protection circuit is an anti-reverse MOS tube.
The embodiment of the invention also provides a control method of the electromagnet control device, which is suitable for the electromagnet control device and at least comprises the following steps:
after the electromagnet control device is electrified, the duty ratio adjusting device outputs a duty ratio output adjusting signal to the control device;
the control device responds to the received duty ratio output adjustment signal and adjusts the electrifying time of the electromagnet and the output duty ratio corresponding to the electrifying time;
the detection device is used for detecting the current/voltage output to the electromagnet by the control device and feeding back a detection signal to the control device;
and the control device judges whether the current working state of the electromagnet meets a preset condition or not according to the received detection signal, and if not, the control device adjusts the signal output.
As a preferred scheme, the control device judges whether the current working state of the electromagnet meets a preset condition according to the received detection signal, and if not, adjusts the signal output, specifically:
the control device processes the detection signal and obtains the input current/input voltage of the electromagnet;
and when the input current/input voltage does not meet the preset condition, stopping the signal output of the electromagnet until the input current/input voltage of the electromagnet meets the preset condition, and recovering the signal output of the electromagnet.
The embodiment of the invention also provides an electromagnetic relay, which comprises an electromagnet, an electromagnetic control switch matched with the electromagnet and the electromagnet control device, wherein the electromagnet control device is electrically connected with the electromagnet.
In summary, the embodiment of the present invention provides an electromagnet control device, a control method, and an electromagnetic relay, and any of the embodiments has the following beneficial effects:
1. by innovating an improved electromagnet control device, the electrified time and the electromagnet duty ratio after electrification are controlled in a duty ratio adjusting mode, so that the force change of the electromagnet in the working motion is controlled, the heating value of the electromagnet in the working process is reduced, the energy consumption is reduced, and the service life of the electromagnet is prolonged;
2. the electromagnet control device of the embodiment is adopted to control the work of the electromagnet, so that the change requirements of large force required by the electromagnet during starting and small force during in-place movement can be met, and the conventional on-off technical means for controlling current fixedly is replaced;
3. the duty ratio adjustment of the electromagnet control is realized through the cooperation of the duty ratio adjusting device and the control device, the heating of the electromagnet during long-time work can be greatly reduced, the initial force after the electromagnet is heated is improved, the energy consumption is reduced, and the service life of the electromagnet is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of an electromagnet control device according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an electromagnet control apparatus according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a duty ratio adjusting apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a transcoder according to an embodiment of the present invention;
FIG. 5 is a graph of the setting time parameters of the dialer of one embodiment of the present invention;
FIG. 6 is a graph of a dialer set duty cycle parameter for a dialer according to one embodiment of the present invention;
fig. 7 is a flowchart of a control method of an electromagnet control device according to an embodiment of the present invention;
wherein the reference numbers in the drawings of the specification are as follows:
1. a control device; 11. a single chip microcomputer; 12. a drive circuit; 13. an output MOS tube; 2. a duty ratio adjusting device; 21. a code dialing device; 22. an output wiring port; 23. a circuit board; 24. a support; 3. a detection device; 31. detecting a resistance; 4. an electromagnet; 5. a power source; 6. a power protection circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a preferred embodiment of the present invention provides an electromagnet control device 1, which includes a control device 1, a duty ratio adjusting device 2, and a detection device 3, wherein the control device 1 is electrically connected to a power supply 5, an electromagnet 4, the duty ratio adjusting device 2, and the detection device 3, respectively;
the duty ratio adjusting device 2 is used for outputting a duty ratio output adjusting signal to the control device 1, and the control device 1 responds to the received duty ratio output adjusting signal and adjusts the electrifying time of the electromagnet 4 and the output duty ratio corresponding to the electrifying time;
the detection device 3 is used for detecting the current/voltage output to the electromagnet 4 by the control device 1 and feeding back a detection signal to the control device 1, the control device 1 judges whether the current working state of the electromagnet 4 meets a preset condition or not according to the received detection signal, and if not, the signal output is adjusted.
After the power is supplied, the control device 1 controls the output with PWM of a certain frequency, and the duty ratio adjusting device 2 may set the power supply time of 100% and the output duty ratio after the power supply time of 100%.
In a possible embodiment, the electromagnet control device 1 further comprises a power supply protection circuit 6, and the output end of the power supply 5 is electrically connected with the power supply end of the control device 1 through the power supply protection circuit 6.
Preferably, the power protection circuit 6 may be an anti-reverse MOS transistor. When the direct current power supply is connected, the MOS tube is prevented from being reversely connected (the direct current power supply is prevented from being reversely connected) as shown in figure 2.
Referring to fig. 2, in a possible embodiment, the control device 1 includes a single chip microcomputer 11, a driving circuit, and an output MOS transistor 13, an output end of the single chip microcomputer 11 is electrically connected to an input end of the driving circuit 12, an output end of the driving circuit 12 is electrically connected to an input end of the output MOS transistor 13, and output ends of the MOS transistors are electrically connected to the electromagnet 4 and the detection device 3, respectively; the driving circuit can adopt a MOS transistor driving chip 12.
Alternatively, the duty ratio adjusting device may adopt a dial 21, as shown in fig. 3 and 4, the dial 21 has an output connection port 22, a circuit board 23, an output connection port 22, and a bracket 24. Of course, the duty cycle adjustment means may also employ coded digital switches including, but not limited to, a pin 3:3ERD710AMZ bit 10/0-9 taiwan digital rotary switch encoder ECE. The detection means 3 comprise a voltage sampling unit, which may be a sampling resistor.
In one embodiment, in the electromagnet control device 1 shown in fig. 2, when the dc power supply 5 is connected, the output is controlled by PWM of a certain frequency by the anti-reverse connection MOS transistor (preventing the dc power supply from being connected reversely), the dial 21 connected to the single chip 11 can set 100% of the power-on time and 100% of the output duty ratio after the power-on time, the output signal on the single chip 11 controls the MOS transistor driving chip, the MOS transistor driving chip 12 controls the output of the output MOS transistor 13, and the sampling detection resistor 31 is connected in parallel to the output COM transistor side. When the output current is too large, the voltage on the resistor is fed back to the singlechip 11, so that the singlechip 11 stops outputting until the output current returns to normal.
Compared with the prior art, the embodiment of the invention adds one more dial 21 for control, in specific implementation, the default duty ratio can be set to be 100% after the electromagnet 4 is powered on, or as shown in fig. 5 and 6, parameters are set according to actual requirements, the setting of 100% power-on time and the setting of the duty ratio after the electromagnet 4 is powered on are realized, and the output force of the electromagnet 4 can be in a more balanced state.
The embodiment of the invention also provides an electromagnetic relay, which comprises an electromagnet 4, an electromagnetic control switch matched with the electromagnet 4 and the electromagnet control device 1, wherein the electromagnet control device 1 is electrically connected with the electromagnet 4.
Correspondingly, as shown in fig. 7, an embodiment of the present invention further provides a control method of an electromagnet control device 1, which is applicable to the electromagnet control device 1, and at least includes the following steps:
s1, after the electromagnet control device 1 is powered on, the duty ratio adjusting device 2 outputs a duty ratio output adjustment signal to the control device 1;
s2, the control device 1 adjusts the energizing time of the electromagnet 4 and the output duty ratio corresponding to the energizing time in response to the received duty ratio output adjustment signal;
s3, the detection device 3 detects the current/voltage output to the electromagnet 4 by the control device 1 and feeds back a detection signal to the control device 1;
and S4, the control device 1 judges whether the current working state of the electromagnet 4 meets the preset condition according to the received detection signal, and if not, the control device adjusts the signal output.
Preferably, step S4 and the control device 1 determine whether the current working state of the electromagnet 4 meets the preset condition according to the received detection signal, and if not, adjust the signal output, specifically:
s41, the control device 1 processes the detection signal and obtains the input current/input voltage of the electromagnet 4;
and S42, when the input current/input voltage does not meet the preset conditions, stopping outputting the signal of the electromagnet 4 until the input current/input voltage meets the preset conditions, and recovering the signal output of the electromagnet 4.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. The electromagnet control device is characterized by comprising a control device, a duty ratio adjusting device and a detection device, wherein the control device is electrically connected with a power supply, an electromagnet, the duty ratio adjusting device and the detection device respectively;
the duty ratio adjusting device is used for outputting a duty ratio output adjusting signal to the control device, and the control device responds to the received duty ratio output adjusting signal and adjusts the electrifying time of the electromagnet and the output duty ratio corresponding to the electrifying time;
the detection device is used for detecting the current/voltage output to the electromagnet by the control device and feeding back a detection signal to the control device, the control device judges whether the current working state of the electromagnet meets a preset condition or not according to the received detection signal, and if not, the signal output is adjusted.
2. The electromagnet control apparatus according to claim 1, further comprising a power supply protection circuit, wherein the output terminal of the power supply is electrically connected to the power supply terminal of the control apparatus through the power supply protection circuit.
3. The electromagnet control device according to claim 1 or 2, wherein the control device comprises a single chip microcomputer, a driving circuit and an output MOS transistor, an output end of the single chip microcomputer is electrically connected with an input end of the driving circuit, an output end of the driving circuit is electrically connected with an input end of the output MOS transistor, and output ends of the MOS transistors are respectively electrically connected with the electromagnet and the detection device.
4. The solenoid control device of claim 1, wherein said duty cycle adjustment means comprises a dialer.
5. The solenoid control device of claim 1, wherein said duty cycle adjusting means comprises a coded digital switch.
6. Electromagnet control device according to claim 1, characterized in that the detection means comprise a voltage sampling unit.
7. The electromagnet control device according to claim 2, wherein the power protection circuit is an anti-reverse MOS transistor.
8. A control method of an electromagnet control device, which is applied to the electromagnet control device according to any one of claims 1 to 7, comprising at least the steps of:
after the electromagnet control device is electrified, the duty ratio adjusting device outputs a duty ratio output adjusting signal to the control device;
the control device responds to the received duty ratio output adjustment signal and adjusts the electrifying time of the electromagnet and the output duty ratio corresponding to the electrifying time;
the detection device is used for detecting the current/voltage output to the electromagnet by the control device and feeding back a detection signal to the control device;
and the control device judges whether the current working state of the electromagnet meets a preset condition or not according to the received detection signal, and if not, the control device adjusts the signal output.
9. The control method of the electromagnet control device according to claim 8, wherein the control device determines whether the current operating state of the electromagnet satisfies a preset condition according to the received detection signal, and if not, adjusts signal output, specifically:
the control device processes the detection signal and obtains the input current/input voltage of the electromagnet;
and when the input current/input voltage does not meet the preset condition, stopping the signal output of the electromagnet until the input current/input voltage of the electromagnet meets the preset condition, and recovering the signal output of the electromagnet.
10. An electromagnetic relay, comprising an electromagnet and an electromagnetic control switch matched with the electromagnet, characterized by further comprising an electromagnet control device according to any one of claims 1 to 7, wherein the electromagnet control device is electrically connected with the electromagnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010134425.7A CN111383815A (en) | 2020-02-28 | 2020-02-28 | Electromagnet control device, control method and electromagnetic relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010134425.7A CN111383815A (en) | 2020-02-28 | 2020-02-28 | Electromagnet control device, control method and electromagnetic relay |
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| Publication Number | Publication Date |
|---|---|
| CN111383815A true CN111383815A (en) | 2020-07-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010134425.7A Pending CN111383815A (en) | 2020-02-28 | 2020-02-28 | Electromagnet control device, control method and electromagnetic relay |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203164652U (en) * | 2013-04-10 | 2013-08-28 | 中国农业大学 | Elevation controller |
| CN105321770A (en) * | 2014-07-30 | 2016-02-10 | 上海电科电器科技有限公司 | Alternating current contactor controller and control method |
| CN107342147A (en) * | 2017-08-10 | 2017-11-10 | 温州大学 | A kind of low-power consumption high-speed electro-magnet drive circuit of two voltage signal pulsewidth modulation |
| US10176949B2 (en) * | 2015-09-24 | 2019-01-08 | Compal Electronics, Inc. | Control apparatus for relay and controlling method thereof |
| CN110136918A (en) * | 2019-06-05 | 2019-08-16 | 中科新松有限公司 | A kind of electromagnet protection circuit and its control method |
-
2020
- 2020-02-28 CN CN202010134425.7A patent/CN111383815A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203164652U (en) * | 2013-04-10 | 2013-08-28 | 中国农业大学 | Elevation controller |
| CN105321770A (en) * | 2014-07-30 | 2016-02-10 | 上海电科电器科技有限公司 | Alternating current contactor controller and control method |
| US10176949B2 (en) * | 2015-09-24 | 2019-01-08 | Compal Electronics, Inc. | Control apparatus for relay and controlling method thereof |
| CN107342147A (en) * | 2017-08-10 | 2017-11-10 | 温州大学 | A kind of low-power consumption high-speed electro-magnet drive circuit of two voltage signal pulsewidth modulation |
| CN110136918A (en) * | 2019-06-05 | 2019-08-16 | 中科新松有限公司 | A kind of electromagnet protection circuit and its control method |
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Application publication date: 20200707 |
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