CN109495096A - Solid-state relay driving device, frequency conversion tank and its solid-state relay driving method - Google Patents
Solid-state relay driving device, frequency conversion tank and its solid-state relay driving method Download PDFInfo
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- CN109495096A CN109495096A CN201811237262.4A CN201811237262A CN109495096A CN 109495096 A CN109495096 A CN 109495096A CN 201811237262 A CN201811237262 A CN 201811237262A CN 109495096 A CN109495096 A CN 109495096A
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- state relay
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/16—Modifications for eliminating interference voltages or currents
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K2017/515—Mechanical switches; Electronic switches controlling mechanical switches, e.g. relais
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Abstract
The invention discloses a kind of solid-state relay driving device, frequency conversion tank and its solid-state relay driving method, which includes: motor control assembly (10), relay control device (30) and optical signal transmission device (20)；Wherein, the motor control assembly (10), for sending the relay control signal controlled the solid-state relay；The optical signal transmission device (20), the relay control signal for sending the motor control assembly (10), is transmitted to the control terminal of solid-state relay in the relay control device (30).The solution of the present invention can solve and interference signal is coupled in driving signal by conducting wire conduction or space magnetic field radiation, easily interferes to solid-state relay control signal, there is a problem of safety difference, achieve the effect that promote safety.
Description
Technical field
The invention belongs to frequency conversion tank technical fields, and in particular to a kind of solid-state relay driving device, frequency conversion tank and its solid
State relay drive method, more particularly to a kind of drive for high-power frequency conversion cabinet solid-state relay design device, have the dress
The solid-state relay driving method of the high-power frequency conversion cabinet and the high-power frequency conversion cabinet set.
Background technique
Master control borad and relay control panel are separated independent design by us in high-power frequency conversion cabinet, and pass through signal wire
It is attached.We common solid-state relay control method are that main control chip DSP issues solid-state relay control signal through believing
Number line (conducting wire 40 as shown in figure 1) is connected to relay control panel, and the optical coupling isolator passed through in relay control panel receives master
The solid-state relay control signal issued on control plate, to control the conducting of solid-state relay, as shown in Figure 1.
Under this mode, when external electrical field environment is more complicated, it will be done by conducting wire conduction or space magnetic field radiation
It disturbs signal to be coupled in driving signal, easily solid-state relay control signal is interfered, if this control signal is low level
When, cause relay to mislead since external disturbance draws high this signal to which strong power part be connected, this to frequency conversion tank very
Danger easily causes frequency conversion tank damage.
Summary of the invention
It is an object of the present invention in view of the foregoing drawbacks, a kind of solid-state relay driving device, frequency conversion tank and its solid are provided
State relay drive method passes through conducting wire conduction or sky to solve in the prior art when external electrical field environment is more complicated
Between magnetic field radiation interference signal is coupled in driving signal, easily to solid-state relay control signal interfere, there is peace
The problem of full property difference achievees the effect that promote safety.
The present invention provides a kind of solid-state relay driving device, comprising: motor control assembly, relay control device and light
Signal transmitting apparatus；Wherein, the motor control assembly, for sending the relay control controlled the solid-state relay
Signal processed；The optical signal transmission device, the relay control signal for sending the motor control assembly, is transmitted to institute
State the control terminal of solid-state relay in relay control device.
Optionally, the motor control assembly, comprising: dsp processor, the first signal driver module and fiber optic transmitter；
Wherein, the dsp processor, for sending the relay control signal；First signal driver module, for described
The relay control signal that dsp processor is sent after increasing driving capability, is exported to the control terminal of the fiber optic transmitter
Mouthful；The fiber optic transmitter, for receiving the relay control signal of the first signal driver module output, and through institute
It states optical signal transmission device and is transmitted to the relay control device.
Optionally, first signal driver module, comprising: the first pull-up resistor and the first phase inverter；Wherein, described
One pull-up resistor is arranged between the signal sending end of the dsp processor and the input terminal of first phase inverter；Described
The output end of one phase inverter is connected to the input terminal of the fiber optic transmitter.
Optionally, the motor control assembly, further includes: the first pull down resistor and the second pull down resistor；Wherein, described
The input terminal of the fiber optic transmitter is arranged in one pull down resistor；Second pull down resistor is arranged in the fiber optic transmitter
Output end.
Optionally, the relay control device, further includes: second signal drive module and fiber optic receiver；Wherein, institute
Fiber optic receiver is stated, for receiving the relay control signal transmitted by the optical signal transmission device, and is exported to institute
State second signal drive module；The second signal drive module, the relay for being sent to the fiber optic receiver
Signal is controlled, after increasing driving capability, is exported to the control terminal of the solid-state relay.
Optionally, the second signal drive module, comprising: the second phase inverter and triode；Wherein, second reverse phase
The input terminal of device is connected to the output end of the fiber optic receiver；The output end of second phase inverter is connected to three pole
The base stage of pipe；The emitter of the triode is connected to the control terminal of the solid-state relay；The collector of the triode connects
Ground.
Optionally, the fiber optic receiver, comprising: fiber optic receiver ontology, the first current-limiting resistance, the second pull-up resistor,
And first to third capacitor；Wherein, the first connecting pin of first current-limiting resistance is connected to the fiber optic receiver ontology
The first connecting pin, the first connecting pin of first capacitor and the input terminal of the second signal drive module；First limit
The adjustable side of leakage resistance is connected to the second connection end of the first capacitor；The second connection end of first current-limiting resistance, point
It is not grounded after the second capacitor and third capacitor in parallel.
Optionally, the optical signal transmission device, comprising: optical fiber cable；Wherein, the optical fiber cable, comprising: optical fiber transmits glass
Glass body.
Match with above-mentioned apparatus, further aspect of the present invention provides a kind of frequency conversion tank, comprising: above-described solid-state relay
Device driving device.
Matching with above-mentioned frequency conversion tank, further aspect of the present invention provides a kind of solid-state relay driving method of frequency conversion tank,
It include: that the relay control signal controlled the solid-state relay is sent by motor control assembly；Pass through optical signal
Transmitting device, the relay control signal that the motor control assembly is sent, be transmitted in relay control device solid-state after
The control terminal of electric appliance.
Optionally, by motor control assembly, the relay control signal controlled the solid-state relay is sent,
It include: that the relay control signal is sent by dsp processor；By the first signal driver module, to DSP processing
The relay control signal that device is sent after increasing driving capability, is exported to the control port of the fiber optic transmitter；Pass through
Fiber optic transmitter, receives the relay control signal of the first signal driver module output, and passes through the optical signal
Defeated device is transmitted to the relay control device.
Optionally, it is transmitted to the control terminal of solid-state relay in relay control device, comprising: by fiber optic receiver,
The relay control signal transmitted by the optical signal transmission device is received, and exports to the second signal and drives mould
Block；Driving capability is increased to the relay control signal that the fiber optic receiver is sent by second signal drive module
Afterwards, it exports to the control terminal of the solid-state relay.
The solution of the present invention is connected by the way that traditional signal wire connection is changed to the higher optical fiber of reliability, is believed with light
It number transmits solid-state relay control signal, efficiently solves since external disturbance causes what solid-state relay misleaded to show
As improving the reliability of entire frequency conversion tank.
Further, the solution of the present invention, by the way that signal source is passed through inverter drive inside of optical fibre LED, by traditional letter
Number transfer mode is changed to POF transmitting by cable transmitting, can reliably control solid-state relay work, substantially increase high-power
The anti-interference and safety of frequency conversion tank.
Further, the solution of the present invention, by substituting tradition with optical fiber in the occasion for being applicable in substitution conventional telecommunications number transmission
Its interference free performance can be improved in copper wire, with phase inverter carry out driving can increase its driving capability facilitate designer design electricity
Road, the two combination increase system security and stability, avoids the problem of solid-state relay as caused by external disturbance misleads,
Enhance the reliability of entire frequency conversion tank.
The solution of the present invention as a result, by the way that traditional signal transfer mode is changed to optical signal transmitting by electric signal transmitting,
Non-conductor will not be interfered by external electrical field, realize that reliably outside is worked as in the work of control solid-state relay, solution in the prior art
When electric field environment is more complicated, interference signal is coupled in driving signal by conducting wire conduction or space magnetic field radiation, pole
Easily solid-state relay control signal is interfered, there is a problem of safety difference, thus, overcome misuse rate in the prior art
The defect high, reliability is low and safety is poor realizes the beneficial effect that misuse rate is low, high reliablity and safety are good.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of conventional solid-state relay controller；
Fig. 2 is the structural schematic diagram of an embodiment of solid-state relay driving device of the invention；
Fig. 3 is the structural schematic diagram of another embodiment of solid-state relay driving device of the invention；
Fig. 4 is the flow diagram of an embodiment of solid-state relay driving method of the invention；
Fig. 5 is the reality that the relay control signal controlled the solid-state relay is sent in method of the invention
Apply the flow diagram of example；
Fig. 6 is the embodiment that the control terminal of solid-state relay in relay control device is transmitted in method of the invention
Flow diagram.
In conjunction with attached drawing, appended drawing reference is as follows in the embodiment of the present invention:
10- motor control assembly (such as motor master control borad)；20- optical signal transmission device (such as optical fiber)；The control of 30- relay
Device (such as relay board)；40- conducting wire (such as copper wire).
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the specific embodiment of the invention and
Technical solution of the present invention is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the present invention one
Section Example, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not doing
Every other embodiment obtained under the premise of creative work out, shall fall within the protection scope of the present invention.
According to an embodiment of the invention, providing a kind of solid-state relay driving device.Dress of the invention shown in Figure 2
The structural schematic diagram for the embodiment set.The solid-state relay driving device may include: (such as motor master of motor control assembly 10
Control plate), 20 (such as light of relay control device 30 (such as relay board) and optical signal transmission device where the solid-state relay
It is fine).
Specifically, the motor control assembly 10, can be used for sending the relay controlled the solid-state relay
Device controls signal.
In an optional example, the motor control assembly 10 may include: dsp processor, the first signal driving mould
Block and fiber optic transmitter.
Specifically, the dsp processor can be used for sending the relay control signal.
Specifically, first signal driver module can be used for the relay control sent to the dsp processor
Signal processed after increasing driving capability, is exported to the control port of the fiber optic transmitter.
Optionally, first signal driver module may include: the first pull-up resistor and the first phase inverter.
Specifically, signal sending end (such as GPIO mouthfuls) and the institute of the dsp processor is arranged in first pull-up resistor
Between the input terminal for stating the first phase inverter.
Specifically, the output end of first phase inverter, is connected to the input terminal of the fiber optic transmitter.
Being equipped with by the first pull-up resistor and the first phase inverter as a result, structure is simple, and can guarantee to DSP
The relay control signal that processor is sent carries out the reliability and safety that driving capability promotes processing.
Specifically, the fiber optic transmitter can be used for receiving the relay of the first signal driver module output
Device controls signal, and is transmitted to the relay control device 30 through the optical signal transmission device 20.
It is transmitted to light again after carrying out driving capability increase by the relay control signal sent to dsp processor as a result,
Fine transmitter, it is ensured that the reliability and accuracy that relay control signal is sent.
In a further optional example, the motor control assembly 10 can also include: the first pull down resistor and
Two pull down resistors.
Specifically, first pull down resistor, is arranged in the input terminal of the fiber optic transmitter.
Specifically, second pull down resistor, is arranged in the output end of the fiber optic transmitter.
As a result, by the way that two pull down resistors are arranged for fiber optic transmitter, fiber optic transmitter output relay control can be promoted
The reliability and accuracy of signal processed.
Specifically, the optical signal transmission device 20 can be used for the relay for sending the motor control assembly 10
Signal is controlled, the control terminal of solid-state relay in the relay control device 30 is transmitted to.
Such as: traditional signal wire connection is changed to the higher optical fiber of reliability and is connected, transmits solid-state with optical signal
Relay control signal specifically may refer to example as shown in Figure 3.The circuit design is efficiently solved due to external disturbance
The phenomenon that causing solid-state relay to mislead, improves the reliability of entire frequency conversion tank.To avoid since external disturbance is led
The problem of solid-state relay of cause misleads enhances the reliability of entire frequency conversion tank.
Such as: by signal source by inverter drive inside of optical fibre LED, it is easy to driving in this way and designer is facilitated to set
Meter；And traditional signal transfer mode is changed to POF transmitting (i.e. optical signal transmitting) by cable transmitting, because of electricity inside frequency converter
Magnetic environment is extremely complex, and non-conductor will not be interfered by external electrical field, can reliably control solid-state relay work, mention significantly
The high anti-interference and safety of high-power frequency conversion cabinet.That is, traditional signal transfer mode is passed by electric signal
It passs and is changed to optical signal transmitting, non-conductor will not be interfered by external electrical field, can reliably control solid-state relay work, significantly
Improve the anti-interference and safety of high-power frequency conversion cabinet.
As a result, by the way that optical signal transmission device is arranged between motor control assembly and relay control device, can drop
The interference of low external electrical field promotes reliability and safety to solid-state relay drive control.
In an optional example, the relay control device 30 can also include: second signal drive module and light
Fine receiver.
Specifically, the fiber optic receiver, can be used for receiving as the optical signal transmission device 20 transmit described in after
Electrical appliance control signal, and export to the second signal drive module.
Optionally, the fiber optic receiver may include: fiber optic receiver ontology (such as light emitting diode), the first current limliting
Resistance, the second pull-up resistor and first are to third capacitor.
Specifically, the first connecting pin of first current-limiting resistance, be connected to the fiber optic receiver ontology first connect
Connect the input at end (anode of such as light emitting diode), the first connecting pin of first capacitor and the second signal drive module
End.
Specifically, the adjustable side of first current-limiting resistance, is connected to the second connection end of the first capacitor.First electricity
The second connection end of appearance is grounded.
Specifically, the second connection end of first current-limiting resistance, respectively after the second capacitor and third capacitor in parallel
Ground connection.
Pass through the current-limiting resistance that is arranged with fiber optic receiver body fits, the second pull-up resistor and first to third as a result,
Capacitor, so that reception and conveying to the relay control signal transmitted through optical signal transmission device are precisely, reliably.
Specifically, the second signal drive module can be used for the relay sent to the fiber optic receiver
Signal is controlled, after increasing driving capability, is exported to the control terminal of the solid-state relay.
Being equipped with by fiber optic receiver and second signal drive module as a result, can believe through light what is received
The relay control signal of number transmitting device transmission is exported again after carrying out driving capability enhancing to solid-state relay, is promoted to solid-state
The reliability and safety of relay control.
Optionally, the second signal drive module may include: the second phase inverter and triode.
Specifically, the input terminal of second phase inverter, is connected to the output end of the fiber optic receiver.
Specifically, the output end of second phase inverter, is connected to the base stage of the triode.The transmitting of the triode
Pole is connected to the control terminal of the solid-state relay.The grounded collector of the triode.
Such as: in master control borad, the GPIO mouth in DSP sends a control signal and increases through pull-up resistor and inverted device
Its driving capability is to drive fiber optic transmitter, and the optical receiving circuit in relay board is then by fiber optic receiver, reverse phase
Device, current-limiting resistance and pull down resistor composition, the output end of the phase inverter are connected to the control terminal of solid-state relay, and the design is effective
Ground solves outside frequency conversion tank there are when strong electrical field, to control signal interferes that solid-state relay is made to mislead
Frequency conversion tank is damaged, and its anti-interference can be greatly improved using optical fiber approach, improves the reliable of entire frequency conversion tank
Property and safety.
Such as: the relay control signal that DSP is issued first passes around pull-up resistor to input terminal (phase inverter of phase inverter
Input terminal default conditions are low level, and only issuing when signal is high level in DSP just makes input terminal high level), the reverse phase
The output end of device is connected to the control port of fiber optic transmitter, controls optical fiber by the low and high level signal of main control chip sending
Whether optical signal is issued in transmitter, in this partial circuit of master control borad, realizes solid-state relay control signal by telecommunications
Number arrive optical signal transformation.The optical signal that master control borad issues is connected to relay control by optical fiber cable (optical fiber transmission vitreum)
In the fiber optic receiver of plate, the transformation by optical signal to electric signal is realized by fiber optic receiver and optical receiving circuit, after
Fiber optic receiver on appliance plate converts light signals into electric signal, and inverted device increases its driving to control corresponding solid-state
Relay (silicon-controlled output photoelectric coupler), the anti-interference of frequency conversion tank can be improved in this scheme, and frequency conversion tank is enable safely may be used
By operation.
Being equipped with by the second phase inverter and triode as a result, structure is simple, and driving capability is strong, driving effect
It is good.
In an optional example, the optical signal transmission device 20, may include: optical fiber cable.
Wherein, the optical fiber cable may include: optical fiber transmission vitreum.
Such as: in the occasion for being applicable in substitution conventional telecommunications number transmission, traditional copper wire is substituted with optical fiber, it is anti-dry that it can be improved
Immunity energy, with phase inverter carry out driving can increase its driving capability facilitate designer design circuit, the two combination increase system
Security and stability.
As a result, by using optical fiber transmission vitreum as optical signal transmission device, strong antijamming capability, transmission it is reliable
Property and the available guarantee of safety.
It is reliable by the way that traditional signal wire connection to be changed to using technical solution of the present invention through a large amount of verification experimental verification
Property the connection of higher optical fiber, solid-state relay control signal is transmitted with optical signal, is efficiently solved due to external disturbance
The phenomenon that causing solid-state relay to mislead, improves the reliability of entire frequency conversion tank.
According to an embodiment of the invention, additionally providing a kind of frequency conversion tank corresponding to solid-state relay driving device.The change
Frequency cabinet may include: above-described solid-state relay driving device.
In an optional embodiment, solid-state relay is prevented the invention proposes a kind of convenient and efficient high reliablity
The hardware circuit to mislead.Traditional signal wire connection is changed to the higher optical fiber of reliability and connected by us, with optical signal
It transmits solid-state relay and controls signal, specifically may refer to example as shown in Figure 3.The circuit design efficiently solve due to
The phenomenon that external disturbance causes solid-state relay to mislead improves the reliability of entire frequency conversion tank.To avoid due to outer
The problem of solid-state relay caused by portion interferes misleads, enhances the reliability of entire frequency conversion tank.
In an optional example, in the solution of the present invention, signal source is passed through into inverter drive inside of optical fibre LED, this
Sample, which is easy to drive, facilitates designer to be designed；And traditional signal transfer mode is changed to POF transmitting (i.e. light by cable transmitting
Signal transmitting) because electromagnetic environment is extremely complex inside frequency converter, non-conductor will not be interfered by external electrical field, can be reliable
Ground controls solid-state relay work, substantially increases the anti-interference and safety of high-power frequency conversion cabinet.
That is, traditional signal transfer mode is changed to optical signal transmitting by electric signal transmitting, non-conductor will not be by
External electrical field is interfered, and can reliably be controlled solid-state relay work, be substantially increased the anti-interference of high-power frequency conversion cabinet
And safety.
In an optional specific embodiment, in the solution of the present invention, in master control borad, the GPIO mouth in DSP is sent
One control signal increases its driving capability to drive fiber optic transmitter through pull-up resistor and inverted device, and in relay board
Optical receiving circuit be then made of fiber optic receiver, phase inverter, current-limiting resistance and pull down resistor, the output end of the phase inverter
It is connected to the control terminal of solid-state relay, which efficiently solves outside frequency conversion tank there are when strong electrical field, to control
Signal processed interferes to damage frequency conversion tank so that solid-state relay be made to mislead, and can be mentioned significantly using optical fiber approach
Its high anti-interference, improves the reliability and safety of entire frequency conversion tank.
Specifically, the relay control signal that DSP is issued first passes around pull-up resistor to input terminal (reverse phase of phase inverter
Device input terminal default conditions are low level, and only issuing when signal is high level in DSP just makes input terminal high level), this is anti-
The output end of phase device is connected to the control port of fiber optic transmitter, controls light by the low and high level signal of main control chip sending
Whether optical signal is issued in fine transmitter, in this partial circuit of master control borad, realizes solid-state relay control signal by electricity
Transformation of the signal to optical signal.The optical signal that master control borad issues is connected to relay control by optical fiber cable (optical fiber transmission vitreum)
In the fiber optic receiver of making sheet, the transformation by optical signal to electric signal is realized by fiber optic receiver and optical receiving circuit,
Fiber optic receiver on relay board converts light signals into electric signal, and it is corresponding solid to control that inverted device increases its driving
State relay (silicon-controlled output photoelectric coupler), the anti-interference of frequency conversion tank can be improved in this scheme, keeps frequency conversion tank safe
Reliability service.
In an alternative example, the solution of the present invention uses optical fiber in the occasion for being applicable in substitution conventional telecommunications number transmission
Traditional copper wire is substituted, its interference free performance can be improved, its driving capability can be increased and facilitate design by carrying out driving with phase inverter
Member's design circuit, the two combination increase system security and stability.It is used in the frequency converter of 300KW or more, and safety and stability
Property is good.
The processing and function realized by the frequency conversion tank of the present embodiment essentially correspond to earlier figures 2 to dress shown in Fig. 3
Embodiment, principle and the example set, therefore not detailed place in the description of the present embodiment, may refer to the correlation in previous embodiment
Illustrate, this will not be repeated here.
Through a large amount of verification experimental verification, using technical solution of the present invention, by the way that signal source is passed through inverter drive optical fiber
Traditional signal transfer mode is changed to POF transmitting by cable transmitting, can reliably control solid-state relay work by internal LED
Make, substantially increases the anti-interference and safety of high-power frequency conversion cabinet.
According to an embodiment of the invention, additionally providing a kind of solid-state relay driving side of frequency conversion tank corresponding to frequency conversion tank
Method, the flow diagram of an embodiment of method of the invention as shown in Figure 4.The solid-state relay driving method of the frequency conversion tank can
To include: step S110 and step S120.
At step S110, by motor control assembly 10, the relay controlled the solid-state relay is sent
Control signal.
In an optional example, can send in method of the invention as shown in connection with fig. 5 to the solid-state relay into
The flow diagram of one embodiment of the relay control signal of row control, further illustrates in step S110 and passes through motor control
Device 10 sends the detailed process of the relay control signal controlled the solid-state relay, may include: step
S210 to step S230.
Step S210 sends the relay control signal by dsp processor.
Step S220 controls letter to the relay that the dsp processor is sent by the first signal driver module
Number, after increasing driving capability, export to the control port of the fiber optic transmitter.
Step S230 receives the relay control of the first signal driver module output by fiber optic transmitter
Signal, and the relay control device 30 is transmitted to through the optical signal transmission device 20.
Being equipped with by the first pull-up resistor and the first phase inverter as a result, structure is simple, and can guarantee to DSP
The relay control signal that processor is sent carries out the reliability and safety that driving capability promotes processing.
At step S120, by optical signal transmission device 20, the relay control that the motor control assembly 10 is sent
Signal processed is transmitted to the control terminal of solid-state relay in relay control device 30.
Such as: traditional signal wire connection is changed to the higher optical fiber of reliability and is connected, transmits solid-state with optical signal
Relay control signal specifically may refer to example as shown in Figure 3.The circuit design is efficiently solved due to external disturbance
The phenomenon that causing solid-state relay to mislead, improves the reliability of entire frequency conversion tank.To avoid since external disturbance is led
The problem of solid-state relay of cause misleads enhances the reliability of entire frequency conversion tank.
Such as: by signal source by inverter drive inside of optical fibre LED, it is easy to driving in this way and designer is facilitated to set
Meter；And traditional signal transfer mode is changed to POF transmitting (i.e. optical signal transmitting) by cable transmitting, because of electricity inside frequency converter
Magnetic environment is extremely complex, and non-conductor will not be interfered by external electrical field, can reliably control solid-state relay work, mention significantly
The high anti-interference and safety of high-power frequency conversion cabinet.That is, traditional signal transfer mode is passed by electric signal
It passs and is changed to optical signal transmitting, non-conductor will not be interfered by external electrical field, can reliably control solid-state relay work, significantly
Improve the anti-interference and safety of high-power frequency conversion cabinet.
As a result, by the way that optical signal transmission device is arranged between motor control assembly and relay control device, can drop
The interference of low external electrical field promotes reliability and safety to solid-state relay drive control.
In an optional example, relay control device 30 can be transmitted in method of the invention as shown in connection with fig. 6
The flow diagram of one embodiment of the control terminal of middle solid-state relay is transmitted to relay in step S120 in further explanation
The detailed process of the control terminal of solid-state relay in control device 30 may include: step S310 and step S320.
Step S310 receives the relay control transmitted by the optical signal transmission device 20 by fiber optic receiver
Signal processed, and export to the second signal drive module.
Step S320 controls letter to the relay that the fiber optic receiver is sent by second signal drive module
Number, after increasing driving capability, export to the control terminal of the solid-state relay.
Such as: in master control borad, the GPIO mouth in DSP sends a control signal and increases through pull-up resistor and inverted device
Its driving capability is to drive fiber optic transmitter, and the optical receiving circuit in relay board is then by fiber optic receiver, reverse phase
Device, current-limiting resistance and pull down resistor composition, the output end of the phase inverter are connected to the control terminal of solid-state relay, and the design is effective
Ground solves outside frequency conversion tank there are when strong electrical field, to control signal interferes that solid-state relay is made to mislead
Frequency conversion tank is damaged, and its anti-interference can be greatly improved using optical fiber approach, improves the reliable of entire frequency conversion tank
Property and safety.
Such as: the relay control signal that DSP is issued first passes around pull-up resistor to input terminal (phase inverter of phase inverter
Input terminal default conditions are low level, and only issuing when signal is high level in DSP just makes input terminal high level), the reverse phase
The output end of device is connected to the control port of fiber optic transmitter, controls optical fiber by the low and high level signal of main control chip sending
Whether optical signal is issued in transmitter, in this partial circuit of master control borad, realizes solid-state relay control signal by telecommunications
Number arrive optical signal transformation.The optical signal that master control borad issues is connected to relay control by optical fiber cable (optical fiber transmission vitreum)
In the fiber optic receiver of plate, the transformation by optical signal to electric signal is realized by fiber optic receiver and optical receiving circuit, after
Fiber optic receiver on appliance plate converts light signals into electric signal, and inverted device increases its driving to control corresponding solid-state
Relay (silicon-controlled output photoelectric coupler), the anti-interference of frequency conversion tank can be improved in this scheme, and frequency conversion tank is enable safely may be used
By operation.
Being equipped with by the second phase inverter and triode as a result, structure is simple, and driving capability is strong, driving effect
It is good.
The processing and function realized by the method for the present embodiment essentially correspond to the embodiment of aforementioned frequency conversion tank, principle
And example, therefore not detailed place in the description of the present embodiment, it may refer to the related description in previous embodiment, do not do herein superfluous
It states.
Through a large amount of verification experimental verification, using the technical solution of the present embodiment, by being applicable in substitution conventional telecommunications number transmission
Occasion, with optical fiber substitute traditional copper wire, its interference free performance can be improved, with phase inverter carry out driving can increase its driving
Ability facilitates designer to design circuit, and the two combination increase system security and stability avoids solid as caused by external disturbance
The problem of state relay misleads enhances the reliability of entire frequency conversion tank.
To sum up, it will be readily appreciated by those skilled in the art that under the premise of not conflicting, above-mentioned each advantageous manner can be certainly
It combined, be superimposed by ground.
The above description is only an embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should be included within scope of the presently claimed invention.
Claims (12)
1. a kind of solid-state relay driving device characterized by comprising motor control assembly (10), relay control device
(30) and optical signal transmission device (20)；Wherein,
The motor control assembly (10), for sending the relay control signal controlled the solid-state relay；
The optical signal transmission device (20), the relay control signal for sending the motor control assembly (10), passes
Transport to the control terminal of solid-state relay in the relay control device (30).
2. the apparatus according to claim 1, which is characterized in that the motor control assembly (10), comprising: dsp processor,
First signal driver module and fiber optic transmitter；Wherein,
The dsp processor, for sending the relay control signal；
First signal driver module, the relay control signal for sending to the dsp processor increase driving
After ability, export to the control port of the fiber optic transmitter；
The fiber optic transmitter for receiving the relay control signal of the first signal driver module output, and passes through
The optical signal transmission device (20) is transmitted to the relay control device (30).
3. the apparatus of claim 2, which is characterized in that first signal driver module, comprising: the first pull-up electricity
Resistance and the first phase inverter；Wherein,
The signal sending end of the dsp processor and the input terminal of first phase inverter is arranged in first pull-up resistor
Between；
The output end of first phase inverter, is connected to the input terminal of the fiber optic transmitter.
4. device according to claim 2 or 3, which is characterized in that the motor control assembly (10), further includes: first
Pull down resistor and the second pull down resistor；Wherein,
First pull down resistor, is arranged in the input terminal of the fiber optic transmitter；
Second pull down resistor, is arranged in the output end of the fiber optic transmitter.
5. device described in one of -4 according to claim 1, which is characterized in that the relay control device (30), further includes:
Second signal drive module and fiber optic receiver；Wherein,
The fiber optic receiver, for receiving the relay control signal transmitted by the optical signal transmission device (20),
And it exports to the second signal drive module；
The second signal drive module, the relay control signal for sending to the fiber optic receiver increase and drive
After kinetic force, export to the control terminal of the solid-state relay.
6. device according to claim 5, which is characterized in that the second signal drive module, comprising: the second phase inverter
And triode；Wherein,
The input terminal of second phase inverter, is connected to the output end of the fiber optic receiver；
The output end of second phase inverter, is connected to the base stage of the triode；The emitter of the triode is connected to institute
State the control terminal of solid-state relay；The grounded collector of the triode.
7. device according to claim 5 or 6, which is characterized in that the fiber optic receiver, comprising: fiber optic receiver sheet
Body, the first current-limiting resistance, the second pull-up resistor and first are to third capacitor；Wherein,
First connecting pin of first current-limiting resistance is connected to the first connecting pin, the first electricity of the fiber optic receiver ontology
The input terminal of the first connecting pin and the second signal drive module that hold；
The adjustable side of first current-limiting resistance, is connected to the second connection end of the first capacitor；
The second connection end of first current-limiting resistance is grounded after the second capacitor and third capacitor in parallel respectively.
8. device described in one of -7 according to claim 1, which is characterized in that the optical signal transmission device (20), comprising: light
Fine line；
Wherein, the optical fiber cable, comprising: optical fiber transmits vitreum.
9. a kind of frequency conversion tank characterized by comprising solid-state relay driving device a method as claimed in any one of claims 1-8.
10. a kind of solid-state relay driving method of frequency conversion tank as claimed in claim 9 characterized by comprising
By motor control assembly (10), the relay control signal controlled the solid-state relay is sent；
By optical signal transmission device (20), the relay control signal that the motor control assembly (10) are sent is transmitted to
The control terminal of solid-state relay in relay control device (30).
11. according to the method described in claim 10, it is characterized in that, being sent by motor control assembly (10) to described solid
The relay control signal that state relay is controlled, comprising:
By dsp processor, the relay control signal is sent；
Driving capability is increased to the relay control signal that the dsp processor is sent by the first signal driver module
Afterwards, it exports to the control port of the fiber optic transmitter；
By fiber optic transmitter, the relay control signal of the first signal driver module output is received, and described in warp
Optical signal transmission device (20) is transmitted to the relay control device (30).
12. method described in 0 or 11 according to claim 1, which is characterized in that be transmitted to solid-state in relay control device (30)
The control terminal of relay, comprising:
By fiber optic receiver, the relay control signal transmitted by the optical signal transmission device (20) is received, and defeated
Out to the second signal drive module；
Driving energy is increased to the relay control signal that the fiber optic receiver is sent by second signal drive module
After power, export to the control terminal of the solid-state relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237262.4A CN109495096A (en) | 2018-10-23 | 2018-10-23 | Solid-state relay driving device, frequency conversion tank and its solid-state relay driving method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237262.4A CN109495096A (en) | 2018-10-23 | 2018-10-23 | Solid-state relay driving device, frequency conversion tank and its solid-state relay driving method |
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| CN201811237262.4A Pending CN109495096A (en) | 2018-10-23 | 2018-10-23 | Solid-state relay driving device, frequency conversion tank and its solid-state relay driving method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110022177A (en) * | 2019-04-22 | 2019-07-16 | 珠海格力电器股份有限公司 | The method protected circuit and drive optical fiber |
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| CN204244243U (en) * | 2014-10-21 | 2015-04-01 | 广州擎天实业有限公司 | A kind of generator excited system SCR trigger pulse transmitting device based on optical fiber |
| CN105655199A (en) * | 2016-01-18 | 2016-06-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Relay control device and method |
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| CN204244243U (en) * | 2014-10-21 | 2015-04-01 | 广州擎天实业有限公司 | A kind of generator excited system SCR trigger pulse transmitting device based on optical fiber |
| CN105655199A (en) * | 2016-01-18 | 2016-06-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Relay control device and method |
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Application publication date: 20190319 |