CN202206366U - 32-path household electronic appliance automatic connector for inquiry management of serial port - Google Patents
32-path household electronic appliance automatic connector for inquiry management of serial port Download PDFInfo
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- CN202206366U CN202206366U CN2011202382869U CN201120238286U CN202206366U CN 202206366 U CN202206366 U CN 202206366U CN 2011202382869 U CN2011202382869 U CN 2011202382869U CN 201120238286 U CN201120238286 U CN 201120238286U CN 202206366 U CN202206366 U CN 202206366U
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Abstract
The utility model relates to a 32-path household electronic appliance automatic connector for the inquiry management of a serial port and belongs to an interface device between the serial port of a computer and a household electronic appliance. The device is used for receiving a series data command transmitted by a transmitting data line TXD (Transmit Data) of the serial port of the computer, converting the series data command into six-digit binary data, transmitting back the six-digit binary data and states of three sensors into the computer for three times by input junctors DSR (Data Set Ready), CTS (Clear To Send) and CD (Compact Disc), correcting command data and outputting the corrected command data to 32 paths of electronic switching circuits by 6-64 decoding. The three operations of command correction, decoding output and state detection are commanded by output junctors DTR (Data Terminal Ready) and RTS (Request To Send) in a united mode. The device comprises an RS232 C interface, an RS232<->TTL (Time to Live)/CMOS (Complementary Metal Oxide Semiconductor) level conversion circuit, three groups of 3-bit three-state gate circuits, three pairs of sensor interface terminals, a 2-4 decoding circuit, a binary counter, a 6-64 decoding circuit, a data latching circuit and 32 groups of electronic switching circuits. The 32-path household electronic appliance automatic connector is used for the computer to detect the three sensors and operate 32 pairs of household electronic and electrical appliances.
Description
Technical field
The utility model belongs to the application electric technology field, particularly relates to the interface arrangement of a kind of computer and domestic electronic and electrical equipment.
Background technology
The computer serial port has four input interconnections, utilizes the event attribute of serial communication control MSComm32.OCX, can detect wherein three the state variation and the high and low situation of level thereof.Therefore; Input interconnection CTS, DSR and CD through serial port; Utility model " the home electronic appliance automation junction block of serial port searching and managing " (patent No.: ZL 2,010 2 0531787.1) detects triad director data and three sensor status; Manage four pairs of home electronic appliances; And utility model " 8 road home electronic appliance automation junction blocks of serial port searching and managing " (application number: 201120229838X) make full use of the 2-4 decode results of two of serial port output interconnection DTR and RTS, detect tetrad director data and four sensor status at twice, manage eight pairs of home electronic appliances.On this basis; Submit to the same period utility model " 16 road home electronic appliance automation junction blocks of serial port searching and managing " of examination to bring into play the effect of three input interconnections comprehensively; Detect five binary command data and four sensor status at twice, manage 16 pairs of home electronic appliances.
Summary of the invention
The purpose of the utility model is to provide a kind of 32 road home electronic appliance automation junction blocks of serial port searching and managing, the interface arrangement between the serial port of its formation home electronic appliance and computer.The serial data instruction that the transmission data wire TXD of this device receiving computer serial port transfers out; Convert thereof into six bit binary data; Return this six bit binary data into computer by three input interconnections of serial port at twice again; Through counter control, proofread and correct errorless after, the signal that secures permission is exported this instruction to 32 road electronic switching circuits with the mode of 6-64 decoding, manages starting or stoping of 32 pairs of domestic electronics or electrical equipment; In addition, all right external 3 transducers of this device allow computer to detect three sensor status through three input interconnections of serial port; Above-mentioned " checking and proofread and correct the instruction of six bit data, 6-64 decoding output, detecting sensor state " these three kinds of actions are by the two piece output interconnection integrated commands of computer through serial port.
The utility model comprises: 9 pin RS232C interfaces, RS232 <-TTL/>CMOS level shifting circuit, three groups of 3bit tri-state gate circuits, the 3 pairs of sensor interface terminals, 2-4 decoding circuit, binary counter, 6-64 decoding circuit, data output enable circuit, data-latching circuit, 32 groups of electronic switching circuits, voltage-stabilized power supply circuit, anti-thunderbolt and surge circuit and supply main and plugs thereof.
The utility model solves the technical scheme that its technical problem adopted:
The 4th pin DTR of RS232C interface, the 7th pin RTS, the 3rd pin TXD are connected respectively to RS232, and < a RS232C level signal input of-TTL/>CMOS level shifting circuit, corresponding three the TTL/CMOS level signal outputs of this level shifting circuit are connected with two signal input parts of 2-4 decoding circuit and the clock signal input terminal of binary counter respectively; Each group 3bit tri-state gate circuit has three signal output parts; Group is parallelly connected with three signal output parts of 3bit tri-state gate circuit between organizing; Constitute three common signal output parts; Each common signal output part is connected to positive source through a pull-up resistor; Each common signal output part be also connected to RS232 a TTL/CMOS level signal input of-TTL/CMOS level shifting circuit, corresponding three the RS232C level signal outputs of this level shifting circuit are connected respectively to the first pin CD, the 6th pin DSR and the 8th pin CTS of RS232C interface; Three groups of 3bit tri-state gate circuits are made up of two 74HC244 or 74HC273; Three signal input parts of one group of 3bit tri-state gate circuit are connected respectively to low three count signal output Q2Q1Q0 of binary counter; Three signal input parts of second group of 3bit tri-state gate circuit have constituted 3 pairs of sensor interface terminals with power cathode respectively, three signal input parts of the 3rd group of 3bit tri-state gate circuit be connected respectively to binary counter than Senior Three position count signal output Q5Q4Q3; The 2-4 decoding circuit is made up of a 2-4 decoder; Effective Enable Pin/the E of its low level connects power cathode, its four decoded signal outputs it/Y0 ,/Y1 ,/Y2 is connected respectively to the output enable end of three groups of 3bit tri-state gate circuits and data output enable circuit with/Y3; Binary counter is made up of two block counter CD4516 cascades; Its reset terminal, preset several Enable Pins, carry input and all connect power cathode; The count mode termination power is anodal, and its low six count signal outputs are connected respectively to six decoded signal inputs of 6-64 decoding circuit; 64 signal output parts of 6-64 decoding circuit are connected respectively to 64 signal input parts of data output enable circuit; 64 signal output parts of data output enable circuit are connected to power cathode through a pull down resistor respectively, and are connected respectively to 32 opposed 1 end S and reset terminal R of data-latching circuit; Data-latching circuit is made up of eight rest-set flip-flop circuit CD4043 side by side; They each have four couples of R, S input control end and four output Q; Have 32 output Q of composition data latch cicuit altogether, be connected respectively to the signal input end of one group of electronic switching circuit; The ac input end of voltage-stabilized power supply circuit is parallelly connected with anti-thunderbolt and surge circuit, receives civil power through supply main and plug thereof, and the output negative pole of voltage-stabilized power supply circuit links to each other with the 5th pin GND of RS232C interface.
Said voltage-stabilized power supply circuit is made up of power transformer, diode bridge rectifier circuit, capacitor filter and circuit of three-terminal voltage-stabilizing integrated 7806, and two outputs of 7806 have constituted the positive source and the power cathode of this device respectively.
Said anti-thunderbolt and surge circuit are made up of a fuse and a piezo-resistance polyphone.
<-TTL/>CMOS level shifting circuit combines four electrochemical capacitors to form by two MAX232 to said RS232.
The structure of said 32 groups of electronic switching circuits is identical, comprises separately: No. 1 alternating current electronic switching circuit and 1 road light current electronic switching circuit.
Said alternating current electronic switching circuit comprises: 1 NPN triode, 1 base resistance, 1 base biasing resistor, 1 collector resistance and a solid-state relay; Wherein, The base stage of one termination NPN triode of base resistance; The other end is as the signal input end of this road electronic switching circuit; And be connected to power cathode through base biasing resistor, and the emitter of NPN triode is connected to power cathode, and negative pole in the signal input end of its collector electrode and collector resistance, solid-state relay and its positive pole, positive source are connected; Two outputs of solid-state relay constitute the output of this road alternating current electronic switching circuit.
Said light current electronic switching circuit comprises: triode and base resistance, a diode and a direct current relay; Wherein, The base stage of one termination triode of base resistance; The other end is connected to the signal input end of this road electronic switching circuit; The emitter of triode is connected to power cathode, and an end of the positive pole of its collector electrode and diode and the coil of direct current relay links together, and the other end of the negative pole of diode and the coil of direct current relay all is connected to positive source; Six terminals of two pairs of single-pole double-throw switch (SPDT)s of direct current relay have constituted the output of this road light current electronic switching circuit.
The 6-64 decoding circuit is made up of a 3-8 decoder and eight 3-8 decoding circuit 74HC138; Wherein, Three decoded signal inputs of eight 3-8 decoding circuits are connected respectively to low three count signal output Q2Q1Q0 of binary counter; Their Enable Pin/E1 is connected respectively to eight decoding outputs of the 3-8 decoder in the 6-64 decoding circuit; Three decoded signal inputs of this 3-8 decoder are connected respectively to fourth, fifth, 63 count signal output Q3, Q4 and Q5 of binary counter, and its Enable Pin/E connects power cathode; Eight 3-8 decoding circuit Enable Pin/E2 separately all be connected to the 2-4 decoding circuit the decoded signal output it/Y3, their Enable Pin E3 connects positive source.
The utility model has constituted the interface between computer serial port and domestic electronic or the electrical equipment.It has acted on utility model " the home electronic appliance automation junction block of serial port searching and managing " (patent No.: ZL 2,010 2 0531787.1) and " 8 road home electronic appliance automation junction blocks of serial port searching and managing " (application number: basic fundamental 201120229838X): send line TXD move instruction from serial data; By the combinations of states of serial port output interconnection DTR and RTS, implement " detecting sensor, check are also proofreaied and correct serial data instruction, decoding output order data ".The utility model is the same with utility model application " 16 road home electronic appliance automation junction blocks of serial port searching and managing "; Three groups of 3bit tri-state gate circuits have been designed; Make full use of the not busy surplus chip selection signal/Y2 of 2-4 decoding circuit output, made computer pass through the state of three input interconnection detecting sensors of serial port, the multidigit count results of inquiry binary counter; The utility model has the advantages that: though the transducer that can cooperate has reduced one,, in check electronic switching circuit group number is increased to 32 groups by 16 groups.
Description of drawings
Below in conjunction with accompanying drawing, further specify the utility model.
Fig. 1 is one of circuit theory diagrams of the utility model; Comprise: RS232 <-TTL/>CMOS level shifting circuit, three groups of 3bit tri-state gate circuits, sensor interface circuitry, 2-4 decoding circuit and voltage-stabilized power supply circuits; Wherein, RS1, RS2, RS3 and RS4 represent transducer respectively.
Fig. 2 be the utility model circuit theory diagrams two, comprising: binary counter, 6-64 decoding circuit, data output enable circuit and data-latching circuit and 32 groups of electronic switching circuits.
Fig. 3 be the utility model circuit theory diagrams three, that is: 6-64 decoding circuit, among the figure, two counter CD4516 implement cascades and form binary counters.
Fig. 4 be the utility model circuit theory diagrams four, that is: one group of electronic switching circuit.
Among the figure, 01.-32. electronic switching circuit, 5. voltage-stabilized power supply circuit, 51. anti-thunderbolt and surge circuit; 8.RS232C interface, 11.-12.RS232 <-TTL/>CMOS level shifting circuit, 13. 3 groups of 3bit tri-state gate circuits, 14.2-4 decoding circuit; 21. binary counter, 22.6-64 decoding circuit, 23. data output enable circuit; 24. data-latching circuit, 31. direct current electromagnetic relays, 32. solid-state relay SSR.
Embodiment
The three piece interconnection CTSs of computer through serial port, DSR and CD inquiry this device cooperated three transducer RS1, RS2 and RS3 and binary counter (21) hang down six count results, its information flow is as shown in Figure 1.Therefore, transfer out the letter " B " of suitable number again through the transmission data wire TXD of serial port, can the correction instruction data.
Fig. 2 has reflected the flow process of serial data instruction " string changes also, deciphers, exports ".
The output enable end of the data output enable circuit (23) among Fig. 2 is all by/Y3 control; Can't help/Y1 or/Y2 control because, if other circuit is by/Y3 control the time; Need intermediateness of experience from DTR/RTS=00-01-11; Be merely some microseconds that dependent instruction is required of computer execution though it lasts, can have influence on the action of data output enable circuit (23) after all, thereby can bring the malfunction of electronic switching circuit (01)-(08).
In the process of check, the instruction of correction serial data, binary counter (21) can produce some count status at random.After the director data of binary counter (21) output obtains proofreading and correct; Data output enable circuit (23) by four decoded signal outputs of 2-4 decoding circuit (22) it/Y3 comes gating; Avoided these count status at random to be applied on 64 input control ends of data-latching circuit (24), prevented the malfunction of electronic switching circuit (01)-(32) through 6-64 decoding circuit (22).
As shown in Figure 2; When the output enable end/OE of data output enable circuit (23) is invalid; Its 32 outputs present high-impedance state; 16 couples of R of data-latching circuit (24), S control end are directed to power cathode by separately pull down resistor respectively, do not influence the operating state of data-latching circuit (24).Data-latching circuit (24) by eight rest-set flip-flops for example CD4043 form side by side, also can form side by side by 64 d type flip flops.
The physical circuit of the 6-64 decoding circuit (22) among Fig. 2 is as shown in Figure 3.Among Fig. 3; Enable Pin/E1 of eight 74HC138 is connected to chip selection signal/Y3; After proofreading and correct the serial data instruction, just allow 6-64 decoding circuit (22) to devote oneself to work; Realize the function of the control data output of data output enable circuit (23) among Fig. 2, therefore, can save independent data output enable circuit (23).
Order MSComm1.OutPut=" B " make and send the ASCII character that line TXD is sent out letter " B " from the serial data of serial port; Can produce 3 rising edge positive transition pulses in the process; Send a string letter " B "; Low six counting ends that the odd number rising edge positive transition pulse meeting that produced triggers binary counter (21) produce 0 to 63 totally 64 count status completely; Cooperate 6-64 decoding circuit (22) at the back with this binary counting result, can control the start and stop of 32 groups of electronic switches.In counting process, there is not unnecessary control line to remove zero clearing counter (21), detect through the way of inquiring about at twice, control the number of out alphabet " B " again and implement to proofread and correct.
Claims (7)
1. 32 road home electronic appliance automation junction blocks of serial port searching and managing; It is characterized in that, comprising: 9 pin RS232C interfaces, RS232 <-TTL/>CMOS level shifting circuit, three groups of 3bit tri-state gate circuits, the 3 pairs of sensor interface terminals, 2-4 decoding circuit, binary counter, 6-64 decoding circuit, data-latching circuit, 32 groups of electronic switching circuits, voltage-stabilized power supply circuit, anti-thunderbolt and surge circuit and supply main and plugs thereof; Wherein, The 4th pin DTR of RS232C interface, the 7th pin RTS, the 3rd pin TXD are connected respectively to RS232, and < a RS232C level signal input of-TTL/>CMOS level shifting circuit, corresponding three the TTL/CMOS level signal outputs of this level shifting circuit are connected with two signal input parts of 2-4 decoding circuit and the clock signal input terminal of binary counter respectively; Each group 3bit tri-state gate circuit has three signal output parts; Group is parallelly connected with three signal output parts of 3bit tri-state gate circuit between organizing; Constitute three common signal output parts; Each common signal output part is connected to positive source through a pull-up resistor; Each common signal output part be also connected to RS232 a TTL/CMOS level signal input of-TTL/CMOS level shifting circuit, corresponding three the RS232C level signal outputs of this level shifting circuit are connected respectively to the first pin CD, the 6th pin DSR and the 8th pin CTS of RS232C interface; Three signal input parts of one group of 3bit tri-state gate circuit are connected respectively to low three count signal output Q2Q1Q0 of binary counter; Three signal input parts of second group of 3bit tri-state gate circuit have constituted 3 pairs of sensor interface terminals with power cathode respectively, three signal input parts of the 3rd group of 3bit tri-state gate circuit be connected respectively to binary counter than Senior Three position count signal output Q5Q4Q3; The 2-4 decoding circuit is made up of a 2-4 decoder, and the effective Enable Pin/E of its low level connects power cathode, its four decoded signal outputs it/Y0 ,/Y1 is connected respectively to the output enable end of three groups of 3bit tri-state gate circuits with/Y2; Binary counter is made up of two block counter CD4516 cascades; Its reset terminal, preset several Enable Pins, carry input and all connect power cathode; The count mode termination power is anodal, and its low six count signal outputs are connected respectively to six decoded signal inputs of 6-64 decoding circuit; 64 signal output parts of 6-64 decoding circuit are connected to power cathode through a pull down resistor respectively, and are connected respectively to 32 opposed 1 end S and reset terminal R of data-latching circuit; Data-latching circuit is made up of eight rest-set flip-flop circuit side by side; They each have four couples of R, S input control end and four output Q; Have 32 output Q of composition data latch cicuit altogether, be connected respectively to the signal input end of one group of electronic switching circuit; The ac input end of voltage-stabilized power supply circuit is parallelly connected with anti-thunderbolt and surge circuit, receives civil power through supply main and plug thereof, and the output negative pole of voltage-stabilized power supply circuit links to each other with the 5th pin GND of RS232C interface.
2. 32 road home electronic appliance automation junction blocks of serial port searching and managing according to claim 1; It is characterized in that; Said voltage-stabilized power supply circuit is made up of power transformer, diode bridge rectifier circuit, capacitor filter and circuit of three-terminal voltage-stabilizing integrated, and two outputs of circuit of three-terminal voltage-stabilizing integrated have constituted the positive source and the power cathode of this device respectively.
3. 32 road home electronic appliance automation junction blocks of serial port searching and managing according to claim 1 is characterized in that, said anti-thunderbolt and surge circuit are made up of a fuse and a piezo-resistance polyphone.
4. 32 road home electronic appliance automation junction blocks of serial port searching and managing according to claim 1; It is characterized in that; The structure of said 32 groups of electronic switching circuits is identical, comprises separately: No. 1 alternating current electronic switching circuit and 1 road light current electronic switching circuit.
5. 32 road home electronic appliance automation junction blocks of serial port searching and managing according to claim 4; It is characterized in that said alternating current electronic switching circuit comprises: 1 NPN triode, 1 base resistance, 1 base biasing resistor, 1 collector resistance and a solid-state relay; Wherein, The base stage of one termination NPN triode of base resistance; The other end is as the signal input end of this road electronic switching circuit; And be connected to power cathode through base biasing resistor, and the emitter of NPN triode is connected to power cathode, and negative pole in the signal input end of its collector electrode and collector resistance, solid-state relay and its positive pole, positive source are connected; Two outputs of solid-state relay constitute the output of this road alternating current electronic switching circuit.
6. 32 road home electronic appliance automation junction blocks of serial port searching and managing according to claim 4 is characterized in that said light current electronic switching circuit comprises: triode and base resistance, a diode and a direct current relay; Wherein, The base stage of one termination triode of base resistance; The other end is connected to the signal input end of this road electronic switching circuit; The emitter of triode is connected to power cathode, and an end of the positive pole of its collector electrode and diode and the coil of direct current relay links together, and the other end of the negative pole of diode and the coil of direct current relay all is connected to positive source; Six terminals of two pairs of single-pole double-throw switch (SPDT)s of direct current relay have constituted the output of this road light current electronic switching circuit.
7. 32 road home electronic appliance automation junction blocks of serial port searching and managing according to claim 1; It is characterized in that; The 6-64 decoding circuit is made up of a 3-8 decoder and eight 3-8 decoding circuit 74HC138; Wherein, Three decoded signal inputs of eight 3-8 decoding circuits are connected respectively to low three count signal output Q2Q1Q0 of binary counter; Their Enable Pin/E1 is connected respectively to one of eight decoding outputs of the 3-8 decoder in the 6-64 decoding circuit, and three decoded signal inputs of this 3-8 decoder are connected respectively to fourth, fifth, 63 count signal output Q3, Q4 and Q5 of binary counter, and its Enable Pin/E connects power cathode; Eight 3-8 decoding circuit Enable Pin/E2 separately all be connected to the 2-4 decoding circuit the decoded signal output it/Y3, their Enable Pin E3 connects positive source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202382869U CN202206366U (en) | 2011-07-07 | 2011-07-07 | 32-path household electronic appliance automatic connector for inquiry management of serial port |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202382869U CN202206366U (en) | 2011-07-07 | 2011-07-07 | 32-path household electronic appliance automatic connector for inquiry management of serial port |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202206366U true CN202206366U (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202382869U Expired - Fee Related CN202206366U (en) | 2011-07-07 | 2011-07-07 | 32-path household electronic appliance automatic connector for inquiry management of serial port |
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| Country | Link |
|---|---|
| CN (1) | CN202206366U (en) |
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2011
- 2011-07-07 CN CN2011202382869U patent/CN202206366U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20120707 |