CN203588791U - Drive circuit of electromagnetic coil - Google Patents
Drive circuit of electromagnetic coil Download PDFInfo
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- CN203588791U CN203588791U CN201320685141.2U CN201320685141U CN203588791U CN 203588791 U CN203588791 U CN 203588791U CN 201320685141 U CN201320685141 U CN 201320685141U CN 203588791 U CN203588791 U CN 203588791U
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- state relay
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- electromagnetic coil
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Abstract
The utility model discloses a drive circuit of an electromagnetic coil, and belongs to the field of driving of electromagnetic coils. The drive circuit comprises a drive power source and further comprises a signal switch module, a first solid state relay, a controller and a compensation delay module, wherein the signal switch module is used for receiving a start signal of the electromagnetic coil and outputs a working signal to a lower level circuit; the first solid state relay is used for switching on or switching off a circuit between the drive power source and the electromagnetic coil; the input end of the controller is connected with the output end of the signal switch module; the output end of the controller is connected with the signal input end of the first solid state relay so as to receive the working signal and output a first control signal and a second control signal in sequence; the compensation delay module is used for controlling the first solid state relay to provide delayed compensation magnetizing current for the electromagnetic coil. According to the drive circuit of the electromagnetic coil, as the compensation delay module provides the delayed compensation magnetizing current for the electromagnetic coil, the electromagnetic coil can generate attraction operation force and maintenance operation force timely, thereby starting operation rapidly.
Description
Technical field
The utility model relates to a kind of electromagnetic coil driving circuit, belongs to solenoid and drives field, particularly relates to the circuit that drives solenoid work under a kind of situation of single supply.
Background technology
The work of solenoid depends primarily on the exciting curent that its drive circuit provides, based on the inductance characteristic of solenoid, for the solenoid of quick work, generally all need the exciting curent of first big after small two grades, the larger exciting curent of short time of one several milliseconds-a few tens of milliseconds is provided when starting, to can form fast the adhesive action force of solenoid, and then keep the exciting curent of solenoid with running current, maintain the maintenance action force of solenoid.
To the solenoid of quick work, existing single supply drive circuit generally comprises driving power, signal switching circuit signaling switch module and controllable constant current source circuit, described controllable constant current source circuit comprises controller, large current start circuit and little current holding circuit, described signaling switch module is for isolating or connect the enabling signal of solenoid, its output is connected with the input of described controller, the output of described controller is connected with described large current start circuit or described little current holding circuit, be used for controlling the described large current start circuit of connection or described little current holding circuit, described large current start circuit or described little current holding circuit, its input is connected with described driving power, its output is connected with described solenoid, described large current start circuit makes described solenoid form adhesive action force, described little current holding circuit makes described solenoid keep action force.
Realizing in process of the present invention, inventor finds that prior art at least exists following shortcoming:
Signaling switch module is connected after the enabling signal of solenoid, enabling signal passes to controller, controller after receiving enabling signal needs this signal to change, the working signal that becomes subordinate's circuit to need, then export, therefore between the enabling signal transmitting time of the time of its output signal and solenoid, there is the regular hour poor, cannot guarantee that solenoid enters work fast.
Utility model content
Main purpose of the present utility model is, a kind of electromagnetic coil driving circuit is provided, and it comprises driving power, also comprises: signaling switch module, for receiving the enabling signal of solenoid and to subordinate's circuit output services signal; The first solid-state relay, for being communicated with or disconnecting the circuit between described driving power and solenoid; Controller, its input is connected with the output of described signaling switch module, its output is connected with the signal input part of described the first solid-state relay, exports the pwm control signal of the first control signal and two sections of different times of the second control signal and different duty for receiving described working signal priority; The second solid-state relay, its output is connected with the input of described the first solid-state relay, and the positive pole of its signal input part is connected with the output of described signaling switch module, for receiving described working signal and forming the 3rd control signal; And RC circuit, its one end is connected with the negative pole of the signal input part of described the second solid-state relay, other end ground connection; Described working signal, controls described controller and described the second solid-state relay work; The first solid-state relay work described in described the first control signal control, for described solenoid provides startup exciting curent; The first solid-state relay work described in described the second control signal control, for described solenoid provides maintenance exciting curent; The first solid-state relay work described in described the 3rd control signal control, for described solenoid provides compensation of delay exciting curent.
Preferably, described controller is S7-200 Programmable Logic Controller.
Preferably, the output of described controller is connected with the input of described the first solid-state relay by the first diode; The output of the second described solid-state relay is connected with the input of described the first solid-state relay by the second diode.
Preferably, described signaling switch module comprises: the 3rd solid-state relay, its output is connected with the signal input part of described the second solid-state relay, and is connected with the input of described controller.
Further, described electromagnetic coil driving circuit also comprises: the first resistance, its one end is connected with the output of described the 3rd solid-state relay, other end ground connection.
Further, described electromagnetic coil driving circuit also comprises: the second resistance, its one end is connected other end ground connection with the input of described the first solid-state relay.
Preferably, described RC circuit, comprising: electrochemical capacitor; Potentiometer, connects with described electrochemical capacitor; And the 3rd resistance, in parallel with described electrochemical capacitor, form discharge loop.
Further, described electromagnetic coil driving circuit also comprises: the 4th resistance; The 3rd diode, connects with described the 4th resistance, is used to form the discharge loop of described solenoid.
Further, described electromagnetic coil driving circuit also comprises: the 5th resistance, and on the circuit between described the first solid-state relay output and described solenoid, for debugging and test sample.
Preferably, the voltage of described driving power be not more than described solenoid insulation voltage 1/2.
By technique scheme, a kind of electromagnetic coil driving circuit of the utility model at least has following advantages:
The electromagnetic coil driving circuit that the utility model embodiment provides, by the compensation delay module of first sending control signal than controller is set, at the time delay of described controller, control described the first solid-state relay work, for described solenoid provides compensation of delay exciting curent, make described solenoid can produce in time adhesive action force and keep action force, thereby enter fast work.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of specification, below with preferred embodiment of the present utility model and coordinate accompanying drawing to be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the electromagnetic coil driving circuit that provides of the utility model embodiment;
Fig. 2 is the exciting curent oscillogram of the formation of the electromagnetic coil driving circuit that provides of the utility model embodiment;
Fig. 3 is the concrete structure schematic diagram of the electromagnetic coil driving circuit that provides of the utility model embodiment;
Embodiment
Technological means and the effect for further setting forth the utility model, for reaching predetermined goal of the invention, taked, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of electromagnetic coil driving circuit, structure, feature and effect thereof according to the utility model proposes, be described in detail as follows.In following explanation, the not necessarily same embodiment that different " embodiment " or " embodiment " refer to.In addition, special characteristic, structure or the feature in one or more embodiment can be combined by any suitable form.
As shown in Figure 1, a kind of electromagnetic coil driving circuit that an embodiment of the present utility model proposes, be used to solenoid that exciting curent is provided, it comprises driving power Vcc, signaling switch module, the first solid-state relay 1, controller, the first diode D1 and compensation delay module.
Wherein, signaling switch module is for receiving the enabling signal of solenoid and to subordinate's circuit output services signal, in the present embodiment, signaling switch module receives the control signal of solenoid, when receiving the enabling signal of described solenoid, described signaling switch module is connected its working power, and the voltage signal of its working power is exported to subordinate's circuit, as the working signal of subordinate's circuit, the first described solid-state relay 1, its power end is connected with described driving power Vcc, its output is connected with described solenoid, be used for being communicated with or disconnecting the circuit between described driving power Vcc and described solenoid, for described solenoid provides exciting curent, the preferred pwm signal of working signal of described the first solid-state relay 1, the input of described controller is connected with the output of described signaling switch module, its output is connected with the signal input part of described the first solid-state relay 1, for receiving the described working signal of described signaling switch module transmission and successively exporting the first control signal and the second control signal, described the first control signal and the second control signal are the pwm control signal of two sections of different times and different duty, it is controlled described the first solid-state relay and starts exciting curent and keep exciting curent for described solenoid provides, the duty ratio of wherein said the first control signal is greater than the duty ratio of described the second control signal, control described the first solid-state relay 1 and provide the startup exciting curent of large electric current for described solenoid, make described solenoid form adhesive action force, described in described the second control signal control, the first solid-state relay 1 provides the maintenance exciting curent of little electric current for described solenoid, make described solenoid keep action force, compensation delay module comprises the second solid-state relay 2 and RC circuit, wherein, the output of the second solid-state relay 2 is connected with the input of described the first solid-state relay, the positive pole of its signal input part is connected with the output of described signaling switch module, be used for receiving described working signal and form the 3rd control signal, control described the first solid-state relay 1 conducting, for described solenoid provides compensation of delay exciting curent.
When receiving the enabling signal of described solenoid, signaling switch module works, described enabling signal is zoomed into the voltage signal identical with its operating voltage, by two branch roads in parallel, to subordinate's circuit, export simultaneously, as the working signal of subordinate's circuit, be specially: by controller described in first road direction, export this working signal, by described this working signal of the second solid-state relay output described in second road direction.Because described controller receives two sections of different times needing after the working signal of described signaling switch module output to convert thereof into and the pwm control signal of different duty, then described pwm control signal is exported to its subordinate's circuit, therefore the time that described controller is exported described the first control signal and described the second control signal can postpone than the transmitting time of solenoid enabling signal, be generally 5-10 millisecond time of delay, described working signal is exported to the second solid-state relay by the second branch road, make described the second solid-state relay work, form the 3rd control signal, control described the first solid-state relay work, as shown in Figure 2, for described solenoid provides compensation of delay exciting curent a, meanwhile, the existence of this working signal makes described RC circuit charging, because the charging current of RC circuit decays gradually, when charging current is less than the signal code that triggers described the second solid-state relay work, described the second solid-state relay quits work, the duration of delay compensation exciting curent a can be adjusted by adjusting RC circuit, this time of general control is 5-10 millisecond, it is the delaying time of controller time, by two sections of different times of controller successively output and the pwm signal of different duty, i.e. the first control signal and the second control signal, control described the first solid-state relay work, form two sections of exciting curents, be i.e. the maintenance exciting curent c of the startup exciting curent b of large electric current and little electric current.
The electromagnetic coil driving circuit that the utility model embodiment provides, by the compensation delay module of first exporting control signal than controller is set, at the time delay of described controller, control described the first solid-state relay work, for described solenoid provides compensation of delay exciting curent, make described solenoid can produce in time adhesive action force and keep action force, thereby enter fast work.
Referring to Fig. 3, preferably, described controller is S7-200 Programmable Logic Controller.S7-200PLC can guide rails assembling, is convenient to Installation and Debugging, and by programming, can realize the setting of two kinds of pwm control signals, is convenient to adjust as required the time of two sections of pwm control signals; By coordinating the drive circuit that can form the work of quick control solenoid with conventional industrial components and parts such as solid-state relay, diode, potentiometer, electric capacity, resistance, greatly simplified circuit, without other printed circuit board, can directly in control cubicle or control cabinet, install, convenient debugging, and cost is low, antijamming capability is strong.
Preferably, the output of described controller is connected with the input of described the first solid-state relay 1 by the first diode D1; The output of the second described solid-state relay 2 is connected with the input of described the first solid-state relay by the second diode D2.By the first diode D1 and the second diode D2 are set, can intercept and the signal of its parallel branch, guarantee the unidirectional delivery of signal.
Preferably, described signaling switch module comprises the 3rd solid-state relay 3, and its output is connected with the signal input part of described the second solid-state relay 2, and is connected with the input of described controller.In the present embodiment, the working power of described the 3rd solid-state relay 3 is 24V power supply, and when its signal input part receives the enabling signal of described solenoid, described the 3rd solid-state relay 3 is connected, and exports described working signal, i.e. 24V power supply voltage signal.Solid-state relay can guide rails assembling, is convenient to installment and debugging.
Preferably, described electromagnetic coil driving circuit, also comprises the first resistance R 1, and its one end is connected with the output of described the 3rd solid-state relay 3, and other end ground connection, more than the preferred 10K Ω of resistance of described the first resistance.By the first resistance R 1 is set, this partial circuit can be made zero when disconnecting, be conducive to protective circuit.
Preferably, described electromagnetic coil driving circuit, also comprises the second resistance R 2, and its one end is connected other end ground connection with the input of described the first solid-state relay 1, and its effect is identical with described the first resistance.
Preferably, described RC circuit, comprises electrochemical capacitor C, potentiometer RW1 and the 3rd resistance R 3, the potentiometer RW1 C that connects with described electrochemical capacitor, and the 3rd resistance R 3 is in parallel with electrochemical capacitor C, forms discharge loop.Because the charging current of RC circuit decays gradually, when decaying to the operating current that is to a certain degree less than the second solid-state relay, the second solid-state relay 2 quits work, the operating time of the second solid-state relay is the required time of compensation delay, when operating voltage is identical, the resistance of the size of charging current and potentiometer RW1 is inversely proportional to, the size of charging interval and charging current is also inversely proportional to, be directly proportional with the capacity of electrochemical capacitor C, therefore in this circuit, the charging interval of corresponding the second solid-state relay operating time is mainly determined by the capacity of electrochemical capacitor C, the resistance of adjusting potentiometer RW1 plays the effect of the fine setting in charging interval.The 3rd resistance R 3 is in parallel with electrochemical capacitor C, forms discharge loop, when there is no control signal, rapidly the electric weight of electrochemical capacitor C is discharged.
Preferably, described electromagnetic coil driving circuit, also comprises the 4th resistance R 4 and the 3rd diode D3, and the 3rd diode D3 connects with the 4th resistance R 4, is used to form the discharge loop of described solenoid, to protect described solenoid normally to work.
Preferably, described electromagnetic coil driving circuit, also comprises the 5th resistance R 5, its resistance is 1 Ω preferably, it is on the circuit between described the first solid-state relay output and described solenoid, for debugging and test sample, so that obtain the drive circuit mating most with described solenoid.
Preferably, the voltage of described driving power Vcc be not more than described solenoid insulation voltage 1/2, to guarantee that solenoid normally works.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, but not in order to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. an electromagnetic coil driving circuit, it comprises driving power, it is characterized in that, also comprises:
Signaling switch module, for receiving the enabling signal of solenoid and to subordinate's circuit output services signal;
The first solid-state relay, for being communicated with or disconnecting the circuit between described driving power and solenoid;
Controller, its input is connected with the output of described signaling switch module, its output is connected with the signal input part of described the first solid-state relay, exports the pwm control signal of the first control signal and two sections of different times of the second control signal and different duty for receiving described working signal priority;
The second solid-state relay, its output is connected with the input of described the first solid-state relay, and the positive pole of its signal input part is connected with the output of described signaling switch module, for receiving described working signal and forming the 3rd control signal; And
RC circuit, its one end is connected with the negative pole of the signal input part of described the second solid-state relay, other end ground connection;
Described working signal, controls described controller and described the second solid-state relay work;
The first solid-state relay work described in described the first control signal control, for described solenoid provides startup exciting curent;
The first solid-state relay work described in described the second control signal control, for described solenoid provides maintenance exciting curent;
The first solid-state relay work described in described the 3rd control signal control, for described solenoid provides compensation of delay exciting curent.
2. electromagnetic coil driving circuit according to claim 1, is characterized in that:
Described controller is S7-200 Programmable Logic Controller.
3. electromagnetic coil driving circuit according to claim 1, is characterized in that:
The output of described controller is connected with the input of described the first solid-state relay by the first diode;
The output of the second described solid-state relay is connected with the input of described the first solid-state relay by the second diode.
4. electromagnetic coil driving circuit according to claim 1, is characterized in that, described signaling switch module, comprising:
The 3rd solid-state relay, its output is connected with the signal input part of described the second solid-state relay, and is connected with the input of described controller.
5. electromagnetic coil driving circuit according to claim 4, is characterized in that, also comprises:
The first resistance, its one end is connected with the output of described the 3rd solid-state relay, other end ground connection.
6. electromagnetic coil driving circuit according to claim 5, is characterized in that, also comprises:
The second resistance, its one end is connected other end ground connection with the input of described the first solid-state relay.
7. according to the electromagnetic coil driving circuit described in claim 1-6 any one, it is characterized in that, described RC circuit, comprising:
Electrochemical capacitor;
Potentiometer, connects with described electrochemical capacitor; And
The 3rd resistance, in parallel with described electrochemical capacitor, form discharge loop.
8. according to the electromagnetic coil driving circuit described in claim 1-6 any one, it is characterized in that, also comprise:
The 4th resistance;
The 3rd diode, connects with described the 4th resistance, is used to form the discharge loop of described solenoid.
9. according to the electromagnetic coil driving circuit described in claim 1-6 any one, it is characterized in that, also comprise:
The 5th resistance, on the circuit between described the first solid-state relay output and described solenoid, for debugging and test sample.
10. according to the electromagnetic coil driving circuit described in claim 1-6 any one, it is characterized in that:
The voltage of described driving power be not more than described solenoid insulation voltage 1/2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320685141.2U CN203588791U (en) | 2013-10-31 | 2013-10-31 | Drive circuit of electromagnetic coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320685141.2U CN203588791U (en) | 2013-10-31 | 2013-10-31 | Drive circuit of electromagnetic coil |
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| Publication Number | Publication Date |
|---|---|
| CN203588791U true CN203588791U (en) | 2014-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320685141.2U Withdrawn - After Issue CN203588791U (en) | 2013-10-31 | 2013-10-31 | Drive circuit of electromagnetic coil |
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| CN (1) | CN203588791U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632803A (en) * | 2013-10-31 | 2014-03-12 | 北京二十一世纪科技发展有限公司 | Driving circuit of electromagnetic coil |
| CN109106191A (en) * | 2017-06-26 | 2019-01-01 | 佛山市顺德区美的电热电器制造有限公司 | Cooking machine and its control device |
-
2013
- 2013-10-31 CN CN201320685141.2U patent/CN203588791U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632803A (en) * | 2013-10-31 | 2014-03-12 | 北京二十一世纪科技发展有限公司 | Driving circuit of electromagnetic coil |
| CN103632803B (en) * | 2013-10-31 | 2016-01-20 | 北京二十一世纪科技发展有限公司 | A kind of electromagnetic coil driving circuit |
| CN109106191A (en) * | 2017-06-26 | 2019-01-01 | 佛山市顺德区美的电热电器制造有限公司 | Cooking machine and its control device |
| CN109106191B (en) * | 2017-06-26 | 2021-09-21 | 佛山市顺德区美的电热电器制造有限公司 | Cooking machine and control device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140507 Effective date of abandoning: 20160120 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |