CN114466255B - Communication switching equipment and communication gear compatible circuit thereof - Google Patents
Communication switching equipment and communication gear compatible circuit thereof Download PDFInfo
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- CN114466255B CN114466255B CN202210095936.1A CN202210095936A CN114466255B CN 114466255 B CN114466255 B CN 114466255B CN 202210095936 A CN202210095936 A CN 202210095936A CN 114466255 B CN114466255 B CN 114466255B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/028—Subscriber network interface devices
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/18—Electrical details
- H04Q1/30—Signalling arrangements; Manipulation of signalling currents
Abstract
The application discloses communication switching equipment and a communication gear compatible circuit thereof, which comprise a serial port communication function circuit, a gear control function circuit and a processor, wherein the output end of the gear control function circuit is connected with a gear interface of the processor, two interfaces in the gear control function circuit are used as input ends of the serial port communication function circuit, one interface is used as the input end of the serial port communication function circuit, the first output end is connected with an enabling end of the processor, the second output end is connected with a communication receiving end of the processor, the visible serial port communication function circuit and the gear control function circuit share three interfaces, the interfaces are reduced, the error probability is reduced, the gear function is started by outputting a gear signal to the processor, when the processor receives a communication signal, the motor is closed to enter a communication state, and when the motor receives the communication signal, the motor enters the communication mode from the communication state, and the probability of wiring error is reduced on the premise of not affecting the communication function.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a communication switching device and a communication gear compatible circuit thereof.
Background
Along with popularization of the application fields of the electronically commutated motors (Electrical Commutation, EC), development of the use scene is also more and more diversified, and in order to reduce the types of the machines, the existing scheme is to integrate multiple control modes into the same motor controller, and the communication function module and the gear function module in the motor are two independent modules, so that each module is provided with an interface correspondingly, and each interface is wired correspondingly.
Because the current scheme integrates a plurality of control modes into the same motor controller, the number of wiring ports and outgoing lines of the controller is increased, and the wiring error probability of a user is increased.
In view of the above technical problems, a method for reducing the error probability of wiring is sought, which is a problem to be solved by those skilled in the art.
Disclosure of Invention
The application aims to provide communication switching equipment and a communication gear compatible circuit thereof.
In order to solve the above technical problems, the present application provides a communication gear compatible circuit, including: the device comprises a serial port communication functional circuit, a gear control functional circuit and a processor;
the output end of the gear control function circuit is connected with the gear interface of the processor and is used for transmitting a gear signal to the processor so as to start a gear function of the motor, wherein two interfaces in the gear control function circuit are used as input ends of the serial communication function circuit, one interface is used as output ends of the serial communication function circuit, the communication output end of the processor is connected with the input ends of the serial communication function circuit, the enabling end of the processor is connected with the first output end of the serial communication function circuit and is used for closing the gear function of the motor and enabling the motor to enter a communication state when receiving an enabling signal, and the communication receiving end of the processor is connected with the second output end of the serial communication function circuit and is used for enabling the motor to be converted into a communication mode from the communication state when receiving the communication signal.
Preferably, the gear control function circuit includes: the first interface, the second interface, the third interface, the fourth interface, the fifth interface, the first optocoupler, the second optocoupler, the third optocoupler, the fourth optocoupler, the fifth optocoupler, the first resistor, the second resistor, the third resistor, the fourth resistor and the fifth resistor;
the first end, the second end and the third end of the first optocoupler are respectively connected with the output end of the first interface, the power supply and the reference ground, and the fourth end of the first optocoupler is respectively connected with the first end of the first resistor and the first-gear interface of the processor and is used for transmitting a gear signal to the processor;
the first end, the second end and the third end of the second optical coupler are respectively connected with the output end of the second interface, the power supply and the reference ground, and the fourth end of the second optical coupler is respectively connected with the first end of the second resistor and the second-gear interface of the processor and is used for transmitting gear signals to the processor;
the first end, the second end and the third end of the third optocoupler are respectively connected with the output end of the third interface, the power supply and the reference ground, and the fourth end of the third optocoupler is respectively connected with the first end of the third resistor and the third-gear interface of the processor and is used for transmitting gear signals to the processor;
the first end, the second end and the third end of the fourth optical coupler are respectively connected with the output end of the fourth interface, the power supply and the reference ground, and the fourth end of the fourth optical coupler is respectively connected with the first end of the fourth resistor and the fourth-gear interface of the processor and is used for transmitting gear signals to the processor;
the first end, the second end and the third end of the fifth optical coupler are respectively connected with the output end of the fifth interface, the power supply and the reference ground, and the fourth end of the fifth optical coupler is respectively connected with the first end of the fifth resistor and the fourth-gear interface of the processor and is used for transmitting gear signals to the processor;
and the second ends of the first resistor, the second resistor, the third resistor, the fourth resistor and the fifth resistor are all grounded.
Preferably, the serial communication function circuit and the gear control function circuit share the third interface, the fourth interface, and the fifth interface, and the serial communication function circuit further includes: the triode, the sixth optocoupler, the sixth resistor and the seventh resistor;
the first end, the second end and the fourth end of the sixth optical coupler are respectively connected with the first end of the sixth resistor, the reference ground and the input end of the fifth interface, and the third end of the sixth optical coupler is grounded;
the emitter, collector and base of the triode are respectively connected with the power supply, the second end of the sixth resistor and the first end of the seventh resistor, and the communication output end of the processor is connected with the second end of the seventh resistor.
Preferably, the circuit further comprises a protection circuit;
the protection circuit comprises an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a first bidirectional TVS tube, a second bidirectional TVS tube, a third bidirectional TVS tube, a fourth bidirectional TVS tube and a fifth bidirectional TVS tube;
the first end of the eighth resistor is connected with the output end of the first interface, the second end of the eighth resistor is respectively connected with the first end of the ninth resistor and the first end of the first bidirectional TVS tube, and the second end of the ninth resistor is connected with the first end of the first optocoupler;
the first end of the tenth resistor is connected with the output end of the second interface, the second end of the tenth resistor is respectively connected with the first end of the eleventh resistor and the first end of the second bidirectional TVS tube, and the second end of the eleventh resistor is connected with the first end of the second optical coupler;
the first end of the twelfth resistor is connected with the output end of the third interface, the second end of the twelfth resistor is connected with the first end of the thirteenth resistor and the first end of the third bidirectional TVS tube respectively, and the second end of the thirteenth resistor is connected with the first end of the third optocoupler;
the first end of the fourteenth resistor is connected with the output end of the fourth interface, the second end of the fourteenth resistor is connected with the first end of the fifteenth resistor and the first end of the fourth bidirectional TVS tube respectively, and the second end of the fifteenth resistor is connected with the first end of the fourth optical coupler;
the first end of the sixteenth resistor is connected with the output end of the fifth interface, the second end of the sixteenth resistor is respectively connected with the first end of the seventeenth resistor and the first end of the fifth bidirectional TVS tube, and the second end of the seventeenth resistor is connected with the first end of the fifth optocoupler;
and the second ends of the first bidirectional TVS tube, the second bidirectional TVS tube, the third bidirectional TVS tube, the fourth bidirectional TVS tube and the fifth bidirectional TVS tube are all grounded.
Preferably, the first filter circuit is further included;
the first filter circuit comprises an eighteenth resistor, a nineteenth resistor, a twentieth resistor, a twenty first resistor, a twenty second resistor, a twenty third resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor and a sixth capacitor;
the first end of the eighteenth resistor is connected with the fourth end of the first optocoupler, and the second end of the eighteenth resistor is connected with the first end of the first capacitor and the first-gear interface respectively;
the first end of the nineteenth resistor is connected with the fourth end of the second optical coupler, and the second end of the nineteenth resistor is connected with the first end of the second capacitor and the second-gear interface respectively;
the first end of the twentieth resistor is connected with the fourth end of the third optocoupler, and the second end of the twentieth resistor is connected with the first end of the third capacitor and the three-gear interface respectively;
the first end of the twenty-first resistor is connected with the fourth end of the fourth optical coupler, and the second end of the second resistor is connected with the first end of the fourth capacitor and the fourth-gear interface respectively;
the first end of the twenty-second resistor is connected with the fourth end of the fifth optocoupler, and the second end of the second resistor is connected with the first end of the fifth capacitor and the fifth interface respectively;
the first end of the sixth capacitor is connected with the first end of the twenty-third resistor and the fourth end of the sixth optocoupler respectively, and the second end of the twenty-third resistor is connected with the input end of the fifth interface;
and the second ends of the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor and the sixth capacitor are grounded.
Preferably, the filter circuit further comprises a second filter circuit;
the second filter circuit comprises a twenty-fourth resistor, a twenty-fifth resistor, a seventh capacitor and an eighth capacitor;
the first end of the seventh capacitor is connected with the first end of the twenty-fourth resistor and the enabling end of the processor respectively, and the second end of the twenty-fourth resistor is connected with the first end of the third resistor and the first end of the twentieth resistor respectively;
the first end of the eighth capacitor is connected with the first end of the twenty-fifth resistor and the communication receiving end of the processor respectively, and the second end of the twenty-fifth resistor is connected with the first end of the fourth resistor and the first end of the twenty-first resistor respectively.
Preferably, the system also comprises a communication adapter plate and an upper computer;
the first end of the communication adapter plate is connected with the upper computer, and the second end of the communication adapter plate is respectively connected with the third interface, the fourth interface, the fifth interface and the reference ground.
In order to solve the technical problems, the application also provides communication switching equipment which comprises the communication gear compatible circuit.
The application provides a communication gear compatible circuit, which comprises a serial communication function circuit, a gear control function circuit and a processor, wherein the output end of the gear control function circuit is connected with a gear interface of the processor, two interfaces in the gear control function circuit are used as the input ends of the serial communication function circuit, one interface is used as the output end of the serial communication function circuit, the first output end of the serial communication function circuit is connected with the enabling end of the processor, and the second output end of the serial communication function circuit is connected with the communication receiving end of the processor.
Drawings
For a clearer description of embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described, it being apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a block diagram of a communication gear compatible circuit according to an embodiment of the present application;
fig. 2 is a circuit diagram of a communication gear compatible circuit according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without making any inventive effort are within the scope of the present application.
The application provides communication switching equipment and a communication gear compatible circuit thereof.
In order to better understand the aspects of the present application, the present application will be described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is a block diagram of a communication gear compatible circuit according to an embodiment of the present application, and it should be noted that, in an EC motor, a general serial communication function circuit and a gear control function circuit are driven separately, but in this case, the number of interfaces of the two circuits is large. In this embodiment, the reduction of the number of interfaces is mainly improved, specifically, as shown in fig. 1, the communication gear compatible circuit includes: the device comprises a serial port communication functional circuit, a gear control functional circuit and a processor; the output end of the gear control function circuit is connected with a gear interface of the processor and is used for transmitting a gear signal to the processor to start a gear function of the motor, wherein two interfaces in the gear control function circuit are used as input ends of the serial communication function circuit, one interface is used as an output end of the serial communication function circuit, a communication output end of the processor is connected with the input end of the serial communication function circuit, an enabling end of the processor is connected with a first output end of the serial communication function circuit and is used for closing the gear function of the motor and enabling the motor to enter a communication state when receiving the enabling signal, and a communication receiving end of the processor is connected with a second output end of the serial communication function circuit and is used for enabling the motor to be converted into a communication mode from the communication state when receiving the communication signal.
It is noted that in an EC motor, the gear function control circuit is generally five gears, so the interfaces of the gear function control circuit are five, the gear signals are transmitted to the processor through the interfaces of the gear function control circuit and the gear interface of the processor, and the processor enables the motor to work in a corresponding gear state according to the gear signals. In addition, the serial communication function circuit and the gear function control circuit share three interfaces, and before the serial communication function circuit is compatible with the gear control function circuit, the serial communication function circuit is two interfaces, but after the serial communication function circuit is compatible with the gear control function circuit, an enabling signal is required to be led out, so that three interfaces are shared, namely the use of the two interfaces is reduced.
In addition, the enabling end of the processor is connected with the first output end of the serial communication functional circuit, and the enabling end is used for receiving a signal different from the gear signal although sharing one interface, and when the enabling signal is received by the processor, the processor can close the gear state of the motor and enter the communication state. Similarly, the second output end of the serial communication function circuit is connected with the communication receiving end of the processor and is used for transmitting a communication signal to the processor, the communication signal is different from the gear signal, and when the processor receives the communication signal, the motor is converted into a communication mode from a communication state. And the input end of the serial communication function circuit is connected with the communication output end of the processor and is used for feeding back signals in the processor to the client. The communication state is a ready state of the communication mode, the communication mode is not really opened, and the communication state is converted into the communication mode after the processor receives the communication signal.
The embodiment provides a communication gear compatible circuit, including serial communication function circuit, gear control function circuit and treater, wherein the output of gear control function circuit is connected with the gear interface of treater, wherein, two interfaces in the gear control function circuit are as the input of serial communication function circuit, an interface is the output of serial communication function circuit, and serial communication function circuit's first output is connected with the enabling end of treater, serial communication function circuit's second output is connected with the communication receiving end of treater, from this, it is clear that this circuit is through gear control function circuit to treater output gear signal, and open the gear function, and make serial communication function circuit and gear control function circuit share three interface, thereby reduce the probability of wiring error, in addition, when the treater received the enabling signal of leading to the fact, will close the gear function, get into communication state, and when receiving communication signal, get into communication mode from communication state, make communication and gear integration, the probability of having reduced the wiring error of communication function is not influenced under the prerequisite of the wiring of the function.
Describing the specific structure of the gear control function circuit based on the above embodiment, fig. 2 is a circuit diagram of a communication gear compatible circuit according to an embodiment of the present application, as shown in fig. 2, where the gear control function circuit includes:
the first interface SP1, the second interface SP2, the third interface SP3, the fourth interface SP4, the fifth interface SP5, the first optocoupler PC1, the second optocoupler PC2, the third optocoupler PC3, the fourth optocoupler PC4, the fifth optocoupler PC5, the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4, and the fifth resistor R5; and the specific connection mode is as follows:
the first end, the second end and the third end of the first optocoupler PC1 are respectively connected with the output end of the first interface SP1, a power supply and a reference ground, and the fourth end of the first optocoupler PC1 is respectively connected with the first end of the first resistor R1 and a first-gear interface of the processor and is used for transmitting a gear signal to the processor;
the first end, the second end and the third end of the second optocoupler PC2 are respectively connected with the output end, the power supply and the reference ground of the second interface SP2, and the fourth end of the second optocoupler PC2 is respectively connected with the first end of the second resistor R2 and the second gear interface of the processor and is used for transmitting a gear signal to the processor;
the first end, the second end and the third end of the third optocoupler PC3 are respectively connected with the output end, the power supply and the reference ground of the third interface SP3, and the fourth end of the third optocoupler PC3 is respectively connected with the first end of the third resistor R3 and the third gear interface of the processor and is used for transmitting a gear signal to the processor;
the first end, the second end and the third end of the fourth optocoupler PC4 are respectively connected with the output end, the power supply and the reference ground of the fourth interface SP4, and the fourth end of the fourth optocoupler PC4 is respectively connected with the first end of the fourth resistor R4 and the fourth-gear interface of the processor and is used for transmitting gear signals to the processor;
the first end, the second end and the third end of the fifth optocoupler PC5 are respectively connected with the output end, the power supply and the reference ground of the fifth interface SP5, and the fourth end of the fifth optocoupler PC5 is respectively connected with the first end of the fifth resistor R5 and the fourth-gear interface of the processor and is used for transmitting gear signals to the processor;
the second ends of the first resistor R1, the second resistor R2, the third resistor R3, the fourth resistor R4 and the fifth resistor R5 are all grounded. In addition, the resistors in each group are pull-down resistors in the circuit, the pull-down resistors are used for transmitting low-level signals, and the processor enters a gear function to represent that one gear interface receives high-level signals, namely, the high level is operated and the low level is not operated.
In addition, the optocoupler is also called an optoisolator or an optocoupler, and is called an optocoupler for short. It is a device for transmitting electric signals by using light as medium, and usually the light emitter (infrared light emitting diode LED) and the light receiver (photo-sensitive semiconductor tube) are packaged in the same tube. When the input end is powered on, the light emitter emits light, and the light receiver receives the light to generate photocurrent, which flows out from the output end, so that the electric-optical-electric conversion is realized. The photoelectric coupler using light as medium to couple the signal of input end to output end has the advantages of small volume, long service life, no contact, strong anti-interference capability, insulation between output and input, unidirectional signal transmission, etc. Abnormal signals can be isolated, and when the abnormal signals are connected with the interface and transmitted, the abnormal signals can be isolated by the optical coupler, so that the safety of the circuit is protected.
According to the gear function control circuit provided by the embodiment, abnormal signals are isolated in the circuit through the optical coupler, the gear signals are transmitted to the processor through the optical coupler, and the processor changes the working state of the motor according to the received gear signals, so that the safety of the circuit is improved.
On the basis of the above embodiment, the serial communication functional circuit is described, specifically:
the serial port communication function circuit shares the third interface SP3, the fourth interface SP4 and the fifth interface SP5 with the gear function control circuit, but the corresponding third optocoupler PC3 and fourth optocoupler PC4 are not only connected with the gear interface of the processor, but also connected with the enabling end and the communication receiving end of the processor, in addition, in order to effectively drive the sixth optocoupler PC6 to transmit the communication signal, as shown in fig. 2, the serial port function circuit further includes: triode Q1, sixth optocoupler PC6, sixth resistor R6 and seventh resistor R7; the first end, the second end and the fourth end of the sixth optocoupler PC6 are respectively connected with the first end of the sixth resistor R6, the reference ground and the input end of the fifth interface SP5, and the third end of the sixth optocoupler PC6 is grounded; the emitter, collector and base of the triode Q1 are respectively connected with a power supply, the second end of the sixth resistor R6 and the first end of the seventh resistor R7, and the communication output end of the processor is connected with the second end of the seventh resistor R7. The triode Q1 is used for amplifying the current of the processor to drive the sixth optocoupler RC6, and the sixth resistor R6 and the seventh resistor R7 are used for controlling the size of the sixth optocoupler PC6 and controlling the triode Q1 to work in a saturation region.
On the basis of the above embodiment, the communication gear compatible circuit further includes a protection circuit, as shown in fig. 2, including: eighth resistor R8, ninth resistor R9, tenth resistor R10, eleventh resistor R11, twelfth resistor R12, thirteenth resistor R13, fourteenth resistor R14, fifteenth resistor R15, sixteenth resistor R16, seventeenth resistor R17, first bidirectional TVS pipe D1, second bidirectional TVS pipe D2, third bidirectional TVS pipe D3, fourth bidirectional TVS pipe D4, and fifth bidirectional TVS pipe D5; the specific connection mode is as follows:
the first end of the eighth resistor R8 is connected with the output end of the first interface SP1, the second end of the eighth resistor R8 is respectively connected with the first end of the ninth resistor R9 and the first end of the first bidirectional TVS tube D1, and the second end of the ninth resistor R9 is connected with the first end of the first optocoupler PC 1;
the first end of the tenth resistor R10 is connected with the output end of the second interface SP2, the second end of the tenth resistor R10 is respectively connected with the first end of the eleventh resistor R11 and the first end of the second bidirectional TVS tube D2, and the second end of the eleventh resistor R11 is connected with the first end of the second optocoupler PC 2;
the first end of the twelfth resistor R12 is connected with the output end of the third interface SP3, the second end of the twelfth resistor R12 is respectively connected with the first end of the thirteenth resistor R13 and the first end of the third bidirectional TVS tube D3, and the second end of the thirteenth resistor R13 is connected with the first end of the third optocoupler PC 3;
the first end of the fourteenth resistor R14 is connected with the output end of the fourth interface SP4, the second end of the fourteenth resistor R14 is respectively connected with the first end of the fifteenth resistor R15 and the first end of the fourth bidirectional TVS tube D4, and the second end of the fifteenth resistor R15 is connected with the first end of the fourth optocoupler PC 4;
a first end of a sixteenth resistor R16 is connected with the output end of the fifth interface SP5, a second end of the sixteenth resistor R16 is connected with a first end of a seventeenth resistor R17 and a first end of a fifth bidirectional TVS tube D5, and a second end of the seventeenth resistor R17 is connected with a first end of a fifth optocoupler PC 5;
and the second ends of the first, second, third, fourth and fifth bidirectional TVS pipes D1, D2, D3, D4 and D5 are all grounded.
It is noted that, in order to enhance the anti-interference capability of the interface circuit and prevent the input damage of external signals, the circuit is protected by adding a bidirectional TVS, wherein the TVS is a novel efficient circuit protection component invented based on the zener diode process, and is also called TVS, transient voltage suppression diode, transient voltage suppressor, avalanche breakdown diode, etc., and has a unidirectional and bidirectional division. When the two ends of the TVS diode are subjected to instant high-energy impact, the impedance value between the two ends is changed from high impedance to low impedance at the speed of PS second level so as to absorb an instant large current, and the voltage between the two ends of the TVS diode is clamped at a preset value, so that the following precise components are protected from the impact of the instant high-voltage spike pulse.
According to the protection circuit provided by the embodiment, the TVS tube and the resistor are arranged between the interface and the gear interface, so that the damage of external signal input is prevented, and the anti-interference capability of the interface circuit is enhanced.
In a specific embodiment, in order to ensure the reliability of the gear signal, a first filter circuit is added in the circuit communication gear compatible circuit, as shown in fig. 2, where the first filter circuit includes:
an eighteenth resistor R18, a nineteenth resistor R19, a twentieth resistor R20, a twenty-first resistor R21, a twenty-second resistor R22, a twenty-third resistor R23, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, and a sixth capacitor C6;
each resistor and each capacitor form a filter circuit, that is to say, five small filter circuits form a first filter circuit, and the filter circuit formed by the eighteenth resistor R18 and the first capacitor C1 is exemplified by the following specific connection modes: the first end of the eighteenth resistor R18 is connected with the fourth end of the first optocoupler PC1 and the second end of the eighteenth resistor R18 is connected with the first end of the first capacitor C1 and the first-gear interface, the second end of the first capacitor C1 is grounded, and the connection modes of the other four groups of filter circuits are the same as those of the group of filter circuits, which is not described in detail in this embodiment.
It will be appreciated that in a specific embodiment, the received signal may be impure, and in order to ensure the reliability of the gear signal or the communication signal, the filter circuit is added, so that the reliability of the signal received by the processor is improved, false triggering of the gear function is prevented, and the accuracy of the work is also ensured.
On the basis of the above embodiment, a filter circuit is also added to the enabling end and the communication receiving end of the processor, as shown in fig. 2, and the second filter circuit includes: including a twenty-fourth resistor R24, a twenty-fifth resistor R25, a seventh capacitor C7, and an eighth capacitor C8.
The twenty-fourth resistor R24 and the seventh capacitor C7 form a group of filter circuits, the twenty-fifth resistor R25 and the eighth capacitor C8 form another group of filter circuits, and the two groups of filter circuits are connected in the same manner, and the specific connection manner is as follows: the first end of the seventh capacitor C7 is connected to the first end of the twenty-fourth resistor R24 and the enabling end of the processor, and the second end of the twenty-fourth resistor R24 is connected to the first end of the third resistor R3 and the first end of the twentieth resistor R20, respectively.
The filter circuit can optimize the waveform, and the waveform is optimized on the premise of not causing waveform distortion, so that the reliability of the enabling signal and the communication signal is improved.
On the basis of the embodiment, the device further comprises a communication adapter plate and an upper computer;
the first end of the communication adapter plate is connected with the upper computer, and the second end of the communication adapter plate is respectively connected with the third interface SP3, the fourth interface SP4, the fifth interface SP5 and the reference ground.
The communication adapter plate and the upper computer provided in this embodiment separately supply power for 24VAC, where the communication adapter plate and the motor are connected with the first interface SP1, the second interface SP2, the third interface SP3 and the reference ground through four interfaces, and in addition, in order to prevent the missing connection or the misconnection of the four interfaces, a binding design is adopted, and in addition, the communication adapter plate separates the motor from the upper computer.
As a preferred embodiment, a definition is made of the operating state of the motor interface, and the following table is a definition of the operating state of the EC motor according to the interface signal, and the operating states of the processor are different when the processor receives different signals, as shown in the following table.
It can be seen that under the premise of no communication enabling signal, which gear interface receives the high level will enter the corresponding gear state, specifically, when the first gear interface is the high level, the other gear interfaces are the low level, and the working state of the motor is in the first gear state. In addition, when receiving the communication enabling signal, the communication state is entered, and a square wave with a proper frequency is output to the SP3 interface, and the frequency of the square wave is not limited in this embodiment, and the frequency can be selected according to the specific implementation situation. When the communication enabling signal is received, the gear function is closed and the motor enters a communication state, and when the communication signal is received, the motor enters a communication mode from the communication state.
Wherein 1 represents a high level, 0 represents a low level,representing square wave, x representing arbitrary signal, except for the above case, the processor is not active, and the table summarises all the operating states of the motor.
Finally, the embodiment of the present application further provides a communication switching device, and since the above description of each circuit is described in detail, the description of this embodiment is omitted.
The communication switching device provided by the embodiment comprises a communication gear compatible circuit, the circuit comprises a serial communication function circuit, a gear control function circuit and a processor, wherein the output end of the gear control function circuit is connected with a gear interface of the processor, two interfaces in the gear control function circuit are used as input ends of the serial communication function circuit, one interface is used as the output end of the serial communication function circuit, the first output end of the serial communication function circuit is connected with an enabling end of the processor, the second output end of the serial communication function circuit is connected with a communication receiving end of the processor, therefore, the circuit outputs a gear signal to the processor through the gear control function circuit, starts the gear function, enables the serial communication function circuit and the gear control function circuit to share three interfaces, reduces the probability of wiring error, and in addition, when the processor receives an enabling signal, the serial communication function is closed, enters a communication state, and when the processor receives the communication signal, the serial communication function circuit enters a communication mode, so that communication and gear integrated communication and gear function are enabled, and the probability of wiring error is not affected under the premise of reducing the functions.
The communication switching device and the communication gear compatible circuit provided by the application are described in detail. In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.
It should also be noted that in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Claims (5)
1. A communication gear compatible circuit, comprising: the device comprises a serial port communication functional circuit, a gear control functional circuit and a processor;
the gear control function circuit includes: the first interface, the second interface, the third interface, the fourth interface, the fifth interface, the first optocoupler, the second optocoupler, the third optocoupler, the fourth optocoupler, the fifth optocoupler, the first resistor, the second resistor, the third resistor, the fourth resistor and the fifth resistor;
the first end, the second end and the third end of the first optocoupler are respectively connected with the output end of the first interface, the power supply and the reference ground, and the fourth end of the first optocoupler is respectively connected with the first end of the first resistor and the first-gear interface of the processor and is used for transmitting a gear signal to the processor;
the first end, the second end and the third end of the second optical coupler are respectively connected with the output end of the second interface, the power supply and the reference ground, and the fourth end of the second optical coupler is respectively connected with the first end of the second resistor and the second-gear interface of the processor and is used for transmitting gear signals to the processor;
the first end, the second end and the third end of the third optocoupler are respectively connected with the output end of the third interface, the power supply and the reference ground, and the fourth end of the third optocoupler is respectively connected with the first end of the third resistor and the third-gear interface of the processor and is used for transmitting gear signals to the processor;
the first end, the second end and the third end of the fourth optical coupler are respectively connected with the output end of the fourth interface, the power supply and the reference ground, and the fourth end of the fourth optical coupler is respectively connected with the first end of the fourth resistor and the fourth-gear interface of the processor and is used for transmitting gear signals to the processor;
the first end, the second end and the third end of the fifth optical coupler are respectively connected with the output end of the fifth interface, the power supply and the reference ground, and the fourth end of the fifth optical coupler is respectively connected with the first end of the fifth resistor and the fifth-gear interface of the processor and is used for transmitting gear signals to the processor; the second ends of the first resistor, the second resistor, the third resistor, the fourth resistor and the fifth resistor are all grounded;
the serial port communication function circuit and the gear control function circuit share the third interface, the fourth interface and the fifth interface, and the serial port communication function circuit further comprises: the triode, the sixth optocoupler, the sixth resistor and the seventh resistor;
the first end, the second end and the fourth end of the sixth optical coupler are respectively connected with the first end of the sixth resistor, the reference ground and the input end of the fifth interface, and the third end of the sixth optical coupler is grounded;
the emitter, the collector and the base of the triode are respectively connected with the power supply, the second end of the sixth resistor and the first end of the seventh resistor, and the communication output end of the processor is connected with the second end of the seventh resistor;
wherein, the filter circuit also comprises a second filter circuit;
the second filter circuit comprises a twenty-fourth resistor, a twenty-fifth resistor, a seventh capacitor and an eighth capacitor;
the first end of the seventh capacitor is connected with the first end of the twenty-fourth resistor and the enabling end of the processor respectively, and the second end of the twenty-fourth resistor is connected with the first end of the third resistor and the first end of the twentieth resistor respectively;
the first end of the eighth capacitor is respectively connected with the first end of the twenty-fifth resistor and the communication receiving end of the processor, and the second end of the twenty-fifth resistor is respectively connected with the first end of the fourth resistor and the first end of the twenty-first resistor;
the gear control function circuit transmits a gear signal to the processor to start a gear function of the motor, and the processor closes the gear function of the motor and enables the motor to enter a communication state when receiving an enabling signal through the enabling signal; when the communication receiving end receives the communication signal, the motor is enabled to be converted into a communication mode from the communication state, wherein the communication state is a preparation state of the communication mode, the communication mode is not really opened, and the communication mode is obtained by converting the communication state after waiting for the processor to receive the communication signal.
2. The communication range compatible circuit of claim 1 further comprising a protection circuit;
the protection circuit comprises an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, a seventeenth resistor, a first bidirectional TVS tube, a second bidirectional TVS tube, a third bidirectional TVS tube, a fourth bidirectional TVS tube and a fifth bidirectional TVS tube;
the first end of the eighth resistor is connected with the output end of the first interface, the second end of the eighth resistor is respectively connected with the first end of the ninth resistor and the first end of the first bidirectional TVS tube, and the second end of the ninth resistor is connected with the first end of the first optocoupler;
the first end of the tenth resistor is connected with the output end of the second interface, the second end of the tenth resistor is respectively connected with the first end of the eleventh resistor and the first end of the second bidirectional TVS tube, and the second end of the eleventh resistor is connected with the first end of the second optical coupler;
the first end of the twelfth resistor is connected with the output end of the third interface, the second end of the twelfth resistor is connected with the first end of the thirteenth resistor and the first end of the third bidirectional TVS tube respectively, and the second end of the thirteenth resistor is connected with the first end of the third optocoupler;
the first end of the fourteenth resistor is connected with the output end of the fourth interface, the second end of the fourteenth resistor is connected with the first end of the fifteenth resistor and the first end of the fourth bidirectional TVS tube respectively, and the second end of the fifteenth resistor is connected with the first end of the fourth optical coupler;
the first end of the sixteenth resistor is connected with the output end of the fifth interface, the second end of the sixteenth resistor is respectively connected with the first end of the seventeenth resistor and the first end of the fifth bidirectional TVS tube, and the second end of the seventeenth resistor is connected with the first end of the fifth optocoupler;
and the second ends of the first bidirectional TVS tube, the second bidirectional TVS tube, the third bidirectional TVS tube, the fourth bidirectional TVS tube and the fifth bidirectional TVS tube are all grounded.
3. The communication range compatible circuit of claim 1 further comprising a first filter circuit;
the first filter circuit comprises an eighteenth resistor, a nineteenth resistor, the twentieth resistor, the twenty first resistor, a twenty second resistor, a twenty third resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor and a sixth capacitor;
the first end of the eighteenth resistor is connected with the fourth end of the first optocoupler, and the second end of the eighteenth resistor is connected with the first end of the first capacitor and the first-gear interface respectively;
the first end of the nineteenth resistor is connected with the fourth end of the second optical coupler, and the second end of the nineteenth resistor is connected with the first end of the second capacitor and the second gear interface respectively;
the first end of the twentieth resistor is connected with the fourth end of the third optocoupler, and the second end of the twentieth resistor is connected with the first end of the third capacitor and the third-gear interface respectively;
the first end of the twenty-first resistor is connected with the fourth end of the fourth optical coupler, and the second end of the twenty-first resistor is connected with the first end of the fourth capacitor and the fourth interface respectively;
the first end of the twenty-second resistor is connected with the fourth end of the fifth optical coupler, and the second end of the twenty-second resistor is connected with the first end of the fifth capacitor and the fifth interface respectively;
the first end of the sixth capacitor is connected with the first end of the twenty-third resistor and the fourth end of the sixth optocoupler respectively, and the second end of the twenty-third resistor is connected with the input end of the fifth interface;
and the second ends of the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor and the sixth capacitor are grounded.
4. The communication gear compatible circuit of claim 3, further comprising a communication adapter plate and an upper computer;
the first end of the communication adapter plate is connected with the upper computer, and the second end of the communication adapter plate is respectively connected with the third interface, the fourth interface, the fifth interface and the reference ground.
5. A communication switching device comprising the communication range compatible circuit of any one of claims 1 to 4.
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| CN202210095936.1A CN114466255B (en) | 2022-01-26 | 2022-01-26 | Communication switching equipment and communication gear compatible circuit thereof |
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| CN202210095936.1A CN114466255B (en) | 2022-01-26 | 2022-01-26 | Communication switching equipment and communication gear compatible circuit thereof |
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| CN114466255B true CN114466255B (en) | 2023-09-26 |
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