CN202206365U - Automatic 16-path household electric appliance wire connector with serial port query management - Google Patents
Automatic 16-path household electric appliance wire connector with serial port query management Download PDFInfo
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- CN202206365U CN202206365U CN2011202380191U CN201120238019U CN202206365U CN 202206365 U CN202206365 U CN 202206365U CN 2011202380191 U CN2011202380191 U CN 2011202380191U CN 201120238019 U CN201120238019 U CN 201120238019U CN 202206365 U CN202206365 U CN 202206365U
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Abstract
An automatic 16-path household electric appliance wire connector with serial port query management belongs to an interface device between a computer serial port and a household electric appliance. Serial data instructions transmitted by port wire TXD are received by the wire connector and are converted to five binary numbers. The five binary numbers are sent back by an input junctor DSR, an input junctor CTS and an input junctor CD for three times to a computer, and the state of four sensors is also sent to the computer. The instruction data are corrected and then output to a 16-path electronic switching circuit by a 5-32 code. The above correction instruction, the decoding output and the detection state are together commanded by an output junctor DTR and an output junctor RTS. The wire connector of the utility model comprises an RS232C interface, an RS232 (-) TTL\CMOS level converting circuit, three sets of 3bit ternary door circuits, four pairs of sensor interface terminals, a 2-4 decoding circuit, a binary counter, a 5-32 decoding circuit, a data latch circuit, and sixteen sets of electronic switching circuits. The wire connector of the utility model is mainly used for the computer to detect the four sensors and operate sixteen sets of household electric 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) detect tetrad director data and four sensor status at twice, manage eight pairs of home electronic appliances.
Summary of the invention
The purpose of the utility model is to provide a kind of 16 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 five bit binary data; Return this five 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 16 road electronic switching circuits with the mode of 5-32 decoding, manages starting or stoping of 16 pairs of domestic electronics or electrical equipment; In addition, all right external 4 transducers of this device allow computer to detect four sensor status at twice through three input interconnections of serial port; Above-mentioned " check and correction five-digit number are according to instruction, 5-32 decoding output, detecting sensor state " these three kinds of actions are commanded through two output interconnections of serial port by computer.
The utility model comprises: 9 pin RS232C interfaces, RS232 <-TTL/>CMOS level shifting circuit, three groups of 3bit tri-state gate circuits, the 4 pairs of sensor interface terminals, 2-4 decoding circuit, binary counter, 5-32 decoding circuit, data output enable circuit, data-latching circuit, 16 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; Every group of 3bit tri-state gate circuit is made up of a 74HC244 or a 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; Two signal input parts of the 3rd group of 3bit tri-state gate circuit are connected respectively to high two count signal output Q4Q3 of binary counter, and its 3rd signal input part and power cathode have constituted the 4th pair of sensor interface terminals; 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 five count signal outputs are connected respectively to five decoded signal inputs of 5-32 decoding circuit; 32 signal output parts of 5-32 decoding circuit are connected respectively to 32 signal input parts of data output enable circuit; 32 signal output parts of data output enable circuit are connected to power cathode through a pull down resistor respectively, and are connected respectively to 16 opposed 1 end S and reset terminal R of data-latching circuit; Data-latching circuit is made up of four 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 16 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 16 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 PNP triode, 1 base resistance, 1 base biasing resistor, 1 collector resistance, 1 current limliting are with 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 base biasing resistor is connected in parallel on the emitter junction of PNP triode, and the emitter of this PNP triode connects positive source; Collector resistance of its base stage series connection is connected to the collector electrode of NPN triode; The emitter of NPN triode is connected to power cathode, and current limliting of the collector electrode of PNP triode series connection is connected to the positive pole in the signal input end of solid-state relay with collector resistance, and the negative pole in the signal input end of solid-state relay is connected to power cathode; 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, a light-emitting 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, and the emitter of triode is connected to power cathode, and its collector electrode is connected to the negative pole of light-emitting diode; The positive pole of light-emitting diode is connected respectively to the end of coil of positive pole and the direct current relay of diode, 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 5-32 decoding circuit is made up of a 2-4 decoder and four 3-8 decoding circuit 74HC138; Wherein, Three decoded signal inputs of four 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 four decoding outputs of the 2-4 decoder in the 5-32 decoding circuit; Two decoded signal inputs of this 2-4 decoder are connected respectively to fourth, fifth two the count signal output Q3 and the Q4 of binary counter, and its Enable Pin/E connects power cathode; Four 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 has the advantages that: the not busy surplus chip selection signal/Y2 that utilizes the output of 2-4 decoding circuit; Use three groups of 3bit tri-state gate circuits; Make computer to detect four sensor status through three input interconnections of serial port, low five count results of inquiry binary counter are through the correction instruction data; Adopt the 5-32 decoding circuit again, increase in check electronic switching circuit group number and reach 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, 5-32 decoding circuit, data output enable circuit and data-latching circuit and 16 groups of electronic switching circuits.
Fig. 3 be the utility model circuit theory diagrams three, that is: 5-32 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.-16. 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, 22.5-32 decoding circuit, 23. data output enable circuit; 24. data-latching circuit, 31. direct current electromagnetic relays, 32. solid-state relay SSR.
Embodiment
The information flow of four transducer RS1, RS2, RS3 and the RS4 that Fig. 1 has reflected the three piece interconnection CTSs of computer through serial port, DSR and CD inquiry this device cooperated and five count results of binary counter (21).So, be convenient to transfer out again the letter " B " of suitable number, reach the purpose of correction instruction data through the transmission data wire TXD of serial port.
Fig. 2 has reflected the flow process of serial data instruction " string changes also, deciphers, exports ".
In the process of check, the instruction of correction serial data; Binary counter (21) can produce some count status at random; These count status at random must not pass through 5-32 decoding circuit (22) and be applied on 32 of data-latching circuit (24) the input control ends, otherwise can cause the malfunction of electronic switching circuit (01)-(16).For this reason; Designed data output enable circuit (23); After the director data of binary counter (21) output obtains proofreading and correct; By four decoded signal outputs of 2-4 decoding circuit (22) it/Y3 comes gating, passes to correct director data 16 couple input control end of data-latching circuit (24).
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).
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 four rest-set flip-flops for example CD4043 form side by side, also can form side by side by 32 d type flip flops.
The physical circuit of the 5-32 decoding circuit (22) among Fig. 2 is as shown in Figure 3.Among Fig. 3; Enable Pin/E1 of four 74HC138 is connected to chip selection signal/Y3; After proofreading and correct the serial data instruction, just allow 5-32 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).5-32 decoding circuit (22) can be born respectively by two 2-4 decoders among the two decoder integrated circuit 74HC139 with the 2-4 decoder in the 2-4 decoding circuit (14).
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 five counting ends that the odd number rising edge positive transition pulse meeting that produced triggers binary counter (21) produce 0 to 31 totally 32 count status completely; Cooperate 5-32 decoding circuit (22) at the back with this binary counting result, can control the start and stop of 16 groups of electronic switches.In counting process, there is not unnecessary control line to remove zero clearing counter (21), have only way to detect through inquiry at twice, control the number of out alphabet " B " again and implement to proofread and correct.
Claims (7)
1. 16 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 4 pairs of sensor interface terminals, 2-4 decoding circuit, binary counter, 5-32 decoding circuit, data-latching circuit, 16 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; Two signal input parts of the 3rd group of 3bit tri-state gate circuit are connected respectively to high two count signal output Q4Q3 of binary counter, and its 3rd signal input part and power cathode have constituted the 4th pair of sensor interface terminals; 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 five count signal outputs are connected respectively to five decoded signal inputs of 5-32 decoding circuit; 32 signal output parts of 5-32 decoding circuit are connected to power cathode through a pull down resistor respectively, and are connected respectively to 16 opposed 1 end S and reset terminal R of data-latching circuit; Data-latching circuit is made up of four rest-set flip-flop circuit side by side; They each have four couples of R, S input control end and four output Q; Have 16 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. 16 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. 16 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. 16 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 16 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. 16 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 PNP triode, 1 base resistance, 1 base biasing resistor, 1 collector resistance, 1 current limliting are with 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 base biasing resistor is connected in parallel on the emitter junction of PNP triode, and the emitter of this PNP triode connects positive source; Collector resistance of its base stage series connection is connected to the collector electrode of NPN triode; The emitter of NPN triode is connected to power cathode, and current limliting of the collector electrode of PNP triode series connection is connected to the positive pole in the signal input end of solid-state relay with collector resistance, and the negative pole in the signal input end of solid-state relay is connected to power cathode; Two outputs of solid-state relay constitute the output of this road alternating current electronic switching circuit.
6. 16 road home electronic appliance automation junction blocks of serial port searching and managing according to claim 4; It is characterized in that said light current electronic switching circuit comprises: triode and base resistance, a diode, a light-emitting 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, and the emitter of triode is connected to power cathode, and its collector electrode is connected to the negative pole of light-emitting diode; The positive pole of light-emitting diode is connected respectively to the end of coil of positive pole and the direct current relay of diode, 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. 16 road home electronic appliance automation junction blocks of serial port searching and managing according to claim 1; It is characterized in that; The 5-32 decoding circuit is made up of a 2-4 decoder and four 3-8 decoding circuit 74HC138; Wherein, Three decoded signal inputs of four 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 four decoding outputs of 2-4 decoder in the 5-32 decoding circuit, and two decoded signal inputs of this 2-4 decoder are connected respectively to fourth, fifth two the count signal output Q3 and the Q4 of binary counter, and its Enable Pin/E connects power cathode; Four 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 |
|---|---|---|---|
| CN2011202380191U CN202206365U (en) | 2011-07-07 | 2011-07-07 | Automatic 16-path household electric appliance wire connector with serial port query management |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202380191U CN202206365U (en) | 2011-07-07 | 2011-07-07 | Automatic 16-path household electric appliance wire connector with serial port query management |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202206365U true CN202206365U (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202380191U Expired - Fee Related CN202206365U (en) | 2011-07-07 | 2011-07-07 | Automatic 16-path household electric appliance wire connector with serial port query management |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202206365U (en) |
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2011
- 2011-07-07 CN CN2011202380191U patent/CN202206365U/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 |