CN103760795A - Multi-channel coil current switching device based on broadcast communication - Google Patents
Multi-channel coil current switching device based on broadcast communication Download PDFInfo
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- CN103760795A CN103760795A CN201310750397.1A CN201310750397A CN103760795A CN 103760795 A CN103760795 A CN 103760795A CN 201310750397 A CN201310750397 A CN 201310750397A CN 103760795 A CN103760795 A CN 103760795A
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Abstract
The invention provides a multi-channel coil current switching device based on broadcast communication. The device comprises a main control machine and a plurality of electronic switches, one end of each electronic switch is connected with a driver or a power supply, and the other ends of the electronic switches are connected with coils. The electronic switches are connected into communication lines of the main control machine, the main control machine sends signals to all the electronic switches in a broadcasting mode, each electronic switch receives the signals sent by the main control machine and is connected or disconnected according to the signals, and therefore the coils are connected into circuits or disconnected from the circuits. The main control machine only needs one communication line interface and sends the same signals to all the electronic switches, the load of the main control machine is reduced, and meanwhile, the device is easy to extend and meets the requirements for current switching of the different channel coils.
Description
Technical field
The present invention relates to a kind of device of multi-channel coil current switching, particularly a kind of switching device shifter of multiplex winding power supply.
Background technology
Linear electric motors and plane motor straight connect and utilize electric energy to realize rectilinear motion or planar motor, this directly mode of driving has changed the kinds of drive such as past chain, gear, belt, lead screw guide rails, overcome the defects such as the efficiency that traditional mechanical drive train brings is low, low precision, had that starting thrust is large, transmission stiffness is high, a dynamic relevant block, positioning precision advantages of higher.Its range of application is very extensive, as aspects such as lathe, train, detector, semiconductor manufactures.
Linear electric motors and planar motor all have moving-iron type and two kinds of composition forms of moving-coil type.For moving coil motor, because needs provide power supply and cooling system to the coil in motion, need to have cable to be connected with mover, this brings very large inconvenience to work of structural design and motor, also can increase the motion artifacts of cable to mover simultaneously.And moving-iron type motor can not exist such problem, can significantly improve kinematic accuracy.But the planar motor of this kind of structure is existent defect also: along with the increase of movement travel and coil quantity, required driver also increases thereupon, greatly must promote cost
For reducing costs, can adopt the mode of dynamic switching to coil power supply, only give the part or all of coil electricity of mover array below, as described in patent 200910241259.4 and patent 200910243477.1.The method can realize reusing of driver, and then reduces the quantity of required driver.But in above-mentioned patent, do not provide corresponding switching device shifter.Therefore, need badly and a kind ofly can reduce number of drives, can guarantee again the switching device of electric control of the large stroke motion of motor.
Summary of the invention
The present invention aims to provide a kind of multi-channel coil switching device of electric control based on broadcast communication, object is to provide a kind of device that many group coil currents switch of realizing, according to demand, by required coil place in circuit or be disconnected from the circuit, solve large stroke moving-iron type linear motor and planar motor number of drives is required to more problem.
Technical scheme of the present invention is as follows:
A multi-channel coil switching device of electric control based on broadcast communication, contains a plurality of electronic switches, and one end of each electronic switch connects driver, other end connecting coil, contain main control computer, described main control computer contains programmable unit, in described programming unit, has control program; Electronic switch is numbered according to position, and this numbering is as No. ID of electronic switch, and the closed and disconnected of electronic switch is as electronic switch state; Main control computer is connected with each electronic switch by communication line, in the mode of broadcasting, by No. ID of all electronic switches, sends to each electronic switch with state; All electronic switches receive this signal, according to this signal, realize closed or disconnection action; Described main control computer has communication interface, by communication interface and outside, carries out communication.
Technical characterictic of the present invention is also: described a plurality of electronic switches are with mode incoming communication circuit in parallel or series connection.
The quantity of the electronic switch that each driver of the present invention connects is that the quantity of the coil that connects of one or more, described electronic switches is one or more.
Described electronic switch contains sub-communication interface, latch cicuit, buffer circuit, push-pull circuit and field effect transistor circuit; The output terminal of sub-communication interface is connected with the input end of latch cicuit, the output terminal of latch cicuit is connected with the input end of buffer circuit, the output terminal of buffer circuit is connected with the input end of push-pull circuit, and the output terminal of push-pull circuit is connected with the input end of field effect transistor circuit.One end of field effect transistor circuit connects driver, other end connecting coil.
The combination of one or several in described main control computer employing PC, industrial computer, single-chip microcomputer, DSP, field programmable gate array and Programmable Logic Controller.
Described communication interface is one or more combinations in serial line interface, parallel interface, USB interface, optical fiber interface and Ethernet interface.
The described communication line of institute adopts ICP/IP protocol, NETBEUI agreement and IPX/SPX agreement.
The present invention compared with prior art, have the following advantages and high-lighting effect: a kind of multi-channel coil switching device of electric control based on broadcast communication of the present invention, main control computer is to the same signal of all electronic switch broadcast transmissions, each electronic switch is with series connection or mode incoming communication circuit in parallel, receive identical signal, reduce the resource consumption of main control computer, easily expanded simultaneously, can be applicable to have linear electric motors and the planar motor of varying number switching channel demand.
Accompanying drawing explanation
Fig. 1 is a kind of multi-channel coil switching device of electric control one-piece construction schematic diagram based on broadcast communication of the present invention.
Fig. 2 is the another kind of version of a kind of multi-channel coil switching device of electric control based on broadcast communication of the present invention.
Fig. 3 is a kind of building form of electronic switch.
Fig. 4 is a kind of working method of main control computer.
Fig. 5 is a kind of connected mode of electronic switch and driver, coil.
In figure: 1-main control computer; 2-communication interface; 3-communication line; 4-electronic switch; 5-signal; 6-driver; 7-coil; 8-communication interface; 9-latch cicuit; 10-buffer circuit; 1-push-pull circuit; 12-field effect transistor circuit;
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention, structure and embodiment are described further.
Fig. 1 is a kind of multi-channel coil switching device of electric control one-piece construction schematic diagram based on broadcast communication of the present invention.N electronic switch 4 is connected on communication line 3 in parallel, and one end of electronic switch connects driver 6, other end connecting coil 7.On n electronic switch, connected altogether m driver and k coil, n, m and k are positive integer, and not necessarily equate.All electronic switches are numbered according to position, and this numbering is as No. ID of electronic switch, and the closed and disconnected of electronic switch is as electronic switch state.Main control computer 1 utilizes communication line 3 and all electronic switch communications, and on communication line, signal transmission 5.Signal 5 is two-way signaling, can send to for main control computer 1 signal of all electronic switches, can be also the signal that electronic switch sends to main control computer.On different time communication line 3, the signal of transmission can be different, and communication line can time-sharing multiplex.Main control computer 1 is according to external command or directly determine the state of each electronic switch, and in the mode of broadcasting, send to all electronic switches with the state of all electronic switches by No. ID of all electronic switches, each electronic switch 4 receives signal 5, according to the information comprising in signal 5, the action that realizes corresponding closure or disconnect.Main control computer 1 carries out communication with electronic switch 4 via communication line 3, and between the two, certain agreement agreement is followed in communication, and for example ICP/IP protocol, NETBEUI agreement or IPX/SPX agreement, adopt different agreements according to different application occasion; TCP/IP has possessed the demand of extensibility and reliability simultaneously, NETBEUI agreement is applicable to only have single network or the whole environment little working group environment that all bridge joint gets up, IPX/SPX agreement is suitable for catenet to be used, and when electronic switch 4 enormous amount, can adopt this agreement; Also can define according to actual needs required communications protocol.
Fig. 2 is the another kind of version of a kind of multi-channel coil switching device of electric control based on broadcast communication of the present invention, n electronic switch 4 is connected on communication line 3 in the mode of connecting, n electronic switch connected m driver and k coil altogether, and n, m and k not necessarily equate.Main control computer 1 sends on communication line 3 with the mode of state with broadcast No. ID of all electronic switches, and first the electronic switch nearest apart from main control computer receive this signal, and this signal former state is transmitted to next electronic switch, until last electronic switch.When electronic switch 4 also adopts similar mode during to main control computer 1 transmitted signal, for example, when last electronic switch is to main control computer transmitted signal, a upper electronic switch receives this signal, and sends it to its a upper electronic switch, so transmits until main control computer.
For adapting to different application occasion, main control computer 1 contains programmable unit, can to it, carry out programming operation according to the actual requirements, the instruction receiving according to communication interface 2, definite content that sends to the signal 5 of all electronic switches; One or more combinations that main control computer 1 adopts in PC, industrial computer, single-chip microcomputer, DSP, field programmable gate array and Programmable Logic Controller; During work, the instruction that main control computer 1 receives according to communication interface 2, and utilize internally stored program, determine the signal 5 sending, and then control multi-channel electronic switch; Main control computer 1 also can directly be determined according to internal processes and provide signal 5 by the state of each road output.Communication interface 2 can adopt one or more combinations in serial line interface, parallel interface, USB interface, optical fiber interface and Ethernet interface.Wherein serial line interface can be for the situation lower to rate request; And parallel interface can provide transmission speed faster; USB interface can improve higher transmission speed; Optical Fiber Transmission mode can provide farther distance, more stable signal to transmit, and is applicable to more accurate occasion; Ethernet interface also can provide high-speed remote from transmission mode.
Fig. 3 is a kind of building form of electronic switch.The output terminal of sub-communication interface 8 is connected with the input end of latch cicuit 9, the output terminal of latch cicuit 9 is connected with the input end of buffer circuit 10, the output terminal of buffer circuit 10 is connected with the input end of push-pull circuit 11, the output terminal of push-pull circuit 11 is connected with the input end of field effect transistor circuit 12, one end of field effect transistor circuit 12 connects driver 6, other end connecting coil 7.All electronic switches 4 receive by sub-communication interface 8 signal 5 that main control computer sends by communication line 3, this signal is analyzed, obtain the state of corresponding own No. ID, then according to this state, provide steering order and output to storage in latch cicuit 9, when in latch cicuit 9, the instruction of storage changes, this instruction is sent in buffer circuit 10 and changed, and utilize push-pull circuit 11 to control field effect transistor circuit 12, finally realize the closed of switch or disconnect, realizing being communicated with or disconnection between driver and coil.Buffer circuit 10 can improve electronic switch stability, and push-pull circuit 11 improves the load capacity of circuit, can improve switching speed again.Sub-communication interface 8 has sending and receiving function, both for receiving signal, also for transmitted signal; When electronic switch fails while receiving the signal that main control computer sends, by sub-communication interface 8, to main frame transmitted signal, require main frame to resend; When electronic switch is connected on communication line 3 with series system, sub-communication interface 8 also can receive the signal that other electronic switches send, and this signal is forwarded.
Fig. 4 has provided a kind of working method of main control computer.Main control computer 1 communication interface 2 receives external command, and this instruction is sent to the processor of main control computer 1, and processor calls internal processes and according to this instruction, determines the state of all electronic switches, closed or disconnection; Then the signal 5 that establishment need to be broadcasted on communication line 3; After signal 5 is broadcasted away, all electronic switches receive this signal, if successfully receive this signal, electronic switch sends and receives successful instruction to main control computer; If unsuccessful reception, electronic switch sends instruction to main control computer, requires main control computer again to broadcast this signal, until all electronic switches all successfully receive signal.
Fig. 5 is a kind of connected mode of electronic switch and driver, coil.J electronic switch accesses same driver 6, and j is positive integer, and each electronic switch connects a coil 7, and electronic switch is realized closed or disconnects action according to the signal 5 of main control computer 1, coil is communicated with driver or disconnects.There is at most in principle a coil to access the first driver at every turn; If driver functions and power allow a plurality of coils to be accessed simultaneously, carry out multi-coil energising.
Embodiment
With reference to figure 1, introduce the course of work of the multi-channel coil switching device of electric control based on broadcast communication of the present invention, to function of the present invention is described better.
Make n=8 in Fig. 1, have eight electronic switches, No. ID, eight electronic switches for 1.-8.; Main control computer 1 receives instruction by communication interface 2, calls the state that internal processes is determined eight switches: 1.-4. number electronic switch closes, 5.-8. number electronic switch disconnects.Main control computer 1 through communication line 3 broadcast transmissions, adopts custom protocol by No. ID, electronic switch and state, comprises following information in signal 5: check code, initial code, No. ID, state, stop code, check code.Each electronic switch receives above-mentioned signal 5 by sub-communication interface 8, and to its checking of decode, if check code is errorless, electronic switch receives this information, and finds No. ID, this electronic switch correspondence state below, according to this state, moves.For example, make " 0 " representative disconnect, " 1 " represents closed, in signal 5, should be with state for No. ID: " 1121314150607080 ", wherein " 11 " represent that No. ID for electronic switch closes 1., and " 21 " represent that No. ID for electronic switch closes 2., the like until " 41 "; " 50 " represent that No. ID for electronic switch 5. disconnects, the like to " 80 ".Sub-communication interface 8 carries out Decoding Analysis after receiving signal 5, sends to latch cicuit 9 to store No. ID corresponding state of this electronic switch.For example 1. number electronic switch is searched No. ID for coding 1. status information below, and this information is " 1 "; 5. number electronic switch is searched No. ID for 5. No. ID status information below, and this information is " 0 "; Other electronic switches are similar; If the status signal of storage changes in latch cicuit 9, this state is sent to buffer circuit 10, otherwise do not send; Buffer circuit 10 is isolated conversion by the signal receiving, and improves stability, and utilizes push-pull circuit 11 to control field effect transistor circuit 12, realizes the closed of current channel or disconnects; After electronic switch 4 successfully receives signal 5, send and receive successful instruction to main control computer 1; If sub-communication interface 8 is found check code, initial code or stop code mistake, to main control computer 1 transmitted signal, require main control computer 1 to resend this signal, until all electronic switches successfully receive this signal.
More than disclose preferred embodiment of the present invention, in not deviating from claims, the disclosed scope of the invention in the situation that, any various modifications, interpolation and replacement all belong to protection scope of the present invention.
Claims (7)
1. the multi-channel coil switching device of electric control based on broadcast communication, contain a plurality of electronic switches (4), one end of each electronic switch (4) connects driver (6), other end connecting coil (7), it is characterized in that: described multi-channel coil switching device of electric control also contains main control computer (1), described main control computer (1) contains programmable unit, in described programmable unit, has control program; Electronic switch (4) is numbered according to position, and this numbering is as No. ID of electronic switch, and the closed and disconnected of electronic switch (4) is as electronic switch state; Main control computer is connected with each electronic switch (4) by communication line (3), in the mode of broadcasting, by No. ID of all electronic switches, sends to each electronic switch with state; All electronic switches (4) receive this signal, according to this signal, realize closed or disconnection action; Described main control computer (1) has communication interface (2), by communication interface (2) and outside, carries out communication.
2. a kind of multi-channel coil switching device of electric control based on broadcast communication as claimed in claim 1, is characterized in that: described a plurality of electronic switches (4) are with mode incoming communication circuit (3) in parallel or series connection.
3. a kind of multi-channel coil switching device of electric control based on broadcast communication as claimed in claim 1, it is characterized in that: the quantity of the electronic switch (4) that described each driver (6) connects is one or more, the quantity of the coil (7) that described each electronic switch (4) connects is one.
4. a kind of multi-channel coil switching device of electric control based on broadcast communication as described in claim 1,2 or 3, is characterized in that: described electronic switch (4) contains sub-communication interface (8), latch cicuit (9), buffer circuit (10), push-pull circuit (11) and field effect transistor circuit (12); The output terminal of sub-communication interface (8) is connected with the input end of latch cicuit (9), the output terminal of latch cicuit (9) is connected with the input end of buffer circuit (10), the output terminal of buffer circuit (10) is connected with the input end of push-pull circuit (11), and the output terminal of push-pull circuit (11) is connected with the input end of field effect transistor circuit (12).One end of field effect transistor circuit (12) connects driver (6), other end connecting coil (7).
5. a kind of multi-channel coil switching device of electric control based on broadcast communication as described in claim 1,2 or 3, is characterized in that: the combination of one or several in described main control computer (1) employing PC, industrial computer, single-chip microcomputer, DSP, field programmable gate array and Programmable Logic Controller.
6. a kind of multi-channel coil switching device of electric control based on broadcast communication as described in claim 1,2 or 3, is characterized in that: described communication interface (2) is one or several the combination in serial line interface, parallel interface, USB interface, optical fiber interface and Ethernet interface.
7. a kind of multi-channel coil switching device of electric control based on broadcast communication as described in claim 1,2 or 3, is characterized in that: the described communication line of institute (3) adopts ICP/IP protocol, NETBEUI agreement or IPX/SPX agreement.
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| CN201310750397.1A CN103760795A (en) | 2013-12-31 | 2013-12-31 | Multi-channel coil current switching device based on broadcast communication |
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| CN101707472A (en) * | 2009-11-27 | 2010-05-12 | 清华大学 | Power driving distribution method of moving iron type planar motor coil array |
| CN101719712A (en) * | 2009-12-24 | 2010-06-02 | 清华大学 | Moving-iron type linear motor coil array power-driven allocation method |
| CN201829957U (en) * | 2010-07-22 | 2011-05-11 | 北海市深蓝科技发展有限责任公司 | Control method of low-voltage capacitive switch based on bus |
| CN102097916A (en) * | 2011-03-25 | 2011-06-15 | 哈尔滨工业大学 | Long-stroke DC linear motor and control system thereof |
| US20120139455A1 (en) * | 2009-08-28 | 2012-06-07 | Thk Co., Ltd. | Distributed-arrangement linear motor and control method of distributed-arrangement linear motor |
| CN103346767A (en) * | 2013-06-28 | 2013-10-09 | 清华大学 | Electronic switch device |
| CN203368428U (en) * | 2013-06-28 | 2013-12-25 | 清华大学 | Electronic switch equipment |
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2013
- 2013-12-31 CN CN201310750397.1A patent/CN103760795A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120139455A1 (en) * | 2009-08-28 | 2012-06-07 | Thk Co., Ltd. | Distributed-arrangement linear motor and control method of distributed-arrangement linear motor |
| CN101707472A (en) * | 2009-11-27 | 2010-05-12 | 清华大学 | Power driving distribution method of moving iron type planar motor coil array |
| CN101719712A (en) * | 2009-12-24 | 2010-06-02 | 清华大学 | Moving-iron type linear motor coil array power-driven allocation method |
| CN201829957U (en) * | 2010-07-22 | 2011-05-11 | 北海市深蓝科技发展有限责任公司 | Control method of low-voltage capacitive switch based on bus |
| CN102097916A (en) * | 2011-03-25 | 2011-06-15 | 哈尔滨工业大学 | Long-stroke DC linear motor and control system thereof |
| CN103346767A (en) * | 2013-06-28 | 2013-10-09 | 清华大学 | Electronic switch device |
| CN203368428U (en) * | 2013-06-28 | 2013-12-25 | 清华大学 | Electronic switch equipment |
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Address after: 100084 Beijing, Haidian District, 100084 box office box office, Tsinghua University, Applicant after: Tsinghua University Applicant after: U-PRECISION TECH CO., LTD. Address before: 100084 Beijing, Haidian District, 100084 box office box office, Tsinghua University, Applicant before: Tsinghua University Applicant before: U-Precision Tech Co., Ltd. |
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