CN202050398U - Command-type 8-circuit sensor 28N/2 group appliance wire holder managed and checked by serial port junctor - Google Patents

Command-type 8-circuit sensor 28N/2 group appliance wire holder managed and checked by serial port junctor Download PDF

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CN202050398U
CN202050398U CN2010206962356U CN201020696235U CN202050398U CN 202050398 U CN202050398 U CN 202050398U CN 2010206962356 U CN2010206962356 U CN 2010206962356U CN 201020696235 U CN201020696235 U CN 201020696235U CN 202050398 U CN202050398 U CN 202050398U
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8bit
circuit
serial port
data comparator
electronic switching
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曾艺
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Chongqing Technology and Business University
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Chongqing Technology and Business University
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Abstract

The utility model discloses a command-type 8-circuit sensor 28N/2 group appliance wire holder managed and checked by a serial port junctor, which is an interface device for computers and appliances. 28N/2 group electronic appliances are managed by TXD (Transmit Data) of a serial port matched with two junctors, and one input junctor is used for detecting a 8-circuit sensor; the command-type 8-circuit sensor 28N/2 group appliance wire holder managed and checked by the serial port junctor comprises a RS232C (Recommended Standard 232C) interface, a USB (Universal Series Bus) interface, a level switch circuit, a 8bit x N series-in parallel-out shifting register, 28N 8bit x N data comparator circuits, 28N/2 RS (Recommended Standard) flipflop circuits, 28N/2 group electronic switching circuits, a 8bit parallel-in series-out shifting register and a regulated voltage supply circuit, wherein a RTS is respectively served as clock signals of the two shifting registers; DTR (Data Terminal Ready) is respectively served as a series input signal of the 8bit x N series-in parallel-out shifting register and the data shifting/loading control signal of the 8bit parallel-in series-out shifting register; the TXD is served as an output allowable control signal of the comparator circuits; the comparator circuits control the motion of the 28N/2 RS (Recommended Standard) flipflop circuits and the electronic switching circuits thereof; and a CTS receives a serial signal outputted by a 8bit x K parallel-in series-out shifting register. The command-type 8-circuit sensor 28N/2 group appliance wire holder managed and checked by the serial port junctor is used for the network management of current appliances.

Description

Serial port interconnection management core is to instruction type No. 8 transducers 2＜sup〉8N＜/sup 〉/2 groups of household electrical appliances junction blocks
Technical field
The utility model belongs to the application electric technology field, particularly relates to a kind of computer of household electrical appliance automation and interface arrangement of domestic electronic and electrical equipment realized.
Background technology
Submit utility model " 2 of the serial port interconnection output data management of Patent Office of State Intellectual Property Office examination in October, 2010 to 8N/ No. 2 household electrical appliance automation junction blocks " (application number: " serial port interconnection dateout is checked instruction type 2 to the utility model of 201010503120.5) and now submitting to Patent Office to examine 8N/ 2 road automation appliance junction blocks ", " serial port interconnection management core is to 128 groups of household electrical appliances junction blocks of instruction type No. 8 transducers " have common technical characterstic; promptly: two output interconnections control SI PO shift registers by serial port transmit the binary data instruction; and send the output that data wire TXD controls this data command with it; wherein; domestic electronic and electrical equipment are organized in both application data comparator technical managements of back more, and the former uses the decoder technical management and organizes domestic electronic and electrical equipment more.Their difference is: the above two can manage 2 8N/ 2 road household electrical appliances, but, because they rely on four input interconnections of serial port to detect external input signal, thereby be merely able to detect the state of 3 Sensor of Switch-Output Type and the state variation of 1 Sensor of Switch-Output Type, though and the latter only uses an input interconnection of serial port, yet can detect the output state of 8 Sensor of Switch-Output Type, but, the electronic apparatus number that it can be managed has only 128 groups.
Summary of the invention
The purpose of this utility model is to provide a kind of serial port interconnection management core to instruction type No. 8 transducers 2 8N/ 2 groups of household electrical appliances junction blocks, it is the interface arrangement between a kind of computer and the home electronic appliance, it is main frame with the computer, transmit the binary data instruction from two output interconnections of its serial port, the transmission data wire TXD of use serial port controls the output of this director data, by compare management 2 with the command code that presets 8N/ 2 (N=1,2,3 ...) group domestic electronic and electrical equipment, simultaneously, computer can also detect the output state of 8 Sensor of Switch-Output Type; Comprise: RS232C interface, USB interface, USB change the serial port circuit,
Figure BSA00000406553700011
Level shifting circuit, 8bit * N SI PO shift register, 2 8NIndividual 8bit * N data comparator circuit, 2 8N/ 2 rest-set flip-flop circuit, 2 8N/ 2 groups of electronic switching circuits, 8bit incorporate into and go here and there out shift register, the 8 pairs of sensor terminals, voltage-stabilized power supply circuit, anti-lightning strike and surge circuit and power line and plug thereof.
The technical scheme that its technical problem that solves the utility model adopts is:
USB interface is connected to the corresponding signal input part that USB changes the serial port circuit, the corresponding port line parallel of the latter's signal output part and RS232C interface; The 5th pin GND of RS232C interface is connected to power cathode, and its 4th pin DTR, the 7th pin RTS, the 3rd pin TXD are connected respectively to
Figure BSA00000406553700021
A RS232C level signal input of level shifting circuit, the TTL/CMOS level signal output of the corresponding RTS of this level shifting circuit is connected respectively to 8bit * N SI PO shift register and 8bit to be incorporated into and goes here and there out the clock signal input terminal of shift register, the TTL/CMOS level signal output of the corresponding DTR of this level shifting circuit is connected respectively to serial signal input of 8bit * N SI PO shift register and 8bit to be incorporated into and goes here and there out the parallel input data displacement/loading control end of shift register, and the TTL/CMOS level signal output of this level shifting circuit correspondence TXD is connected to 2 8NThe comparative result A=B signal output of individual 8bit * N data comparator circuit allows control end Also connect a pull-up resistor to positive source; The 8th pin CTS of serial port is connected to
Figure BSA00000406553700023
A RS232C level signal output of level shifting circuit, the TTL/CMOS level signal input of corresponding therewith this level shifting circuit are connected to 8bit to be incorporated into and goes here and there out the serial signal output of shift register; 8 * N signal output part of 8bit * N SI PO shift register (for example: Q 15Q 14... Q 2Q 1Q 0(N=2)) with 2 8NOne group of comparison signal input of individual 8bit * N data comparator circuit (for example: A 15A 14... A 2A 1A 0(N=2)) in parallel in regular turn, 2 8N2 of individual 8bit * N data comparator circuit 8NIndividual comparative result A=B signal output part connects a pull down resistor respectively to power cathode, also is connected to 2 in regular turn respectively 8N2 of/2 rest-set flip-flop circuit 8N/ 2 opposed 1 end S and reset terminal R; 2 8N2 of/2 rest-set flip-flop circuit 8N/ 2 output Q are 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 received civil power with anti-lightning strike in parallel with the surge circuit by power line and plug thereof.
8bit * N SI PO shift register is made up of the cascade of N piece 8bit SI PO shift register.
8bit incorporates into and goes here and there out shift register and be made up of a 74HC165, its sheet choosing terminates to power cathode, its cascade carry signal input DS receives positive source, its 8 parallel signal inputs connect a pull-up resistor respectively to positive source, also constitute 8 pairs of sensor terminals with power cathode respectively.
2 8NIndividual 8bit * N data comparator circuit is by 2 8NIndividual 8bit * N binary data comparator is formed, and each 8bit * N binary data comparator has two groups of comparison signal inputs, for example: A 15A 14... A 2A 1A 0And B 15B 14... B 2B 1B 0(N=2), one group of comparison signal input of each 8bit * N binary data comparator, for example: A 15A 14... A 2A 1A 0(N=2), in parallel in regular turn respectively, constitute 2 8NOne group of comparison signal input of individual 8bit * N data comparator circuit, for example: A 15A 14... A 2A 1A 0(N=2); Another group comparison signal input of each 8bit * N binary data comparator, for example: B 15B 14... B 2B 1B 0(N=2), be connected respectively to the common port of a single-pole double-throw switch (SPDT), so have 8 * N * 2 8NIndividual single-pole double-throw switch (SPDT), the two ends in addition of these single-pole double-throw switch (SPDT)s are connected respectively to positive source and power cathode; Each 8bit * N binary data comparator also has the signal output part of a comparative result A=B and a comparative result A=B signal output to allow control end
Figure BSA00000406553700031
The former high level is effective, constitutes 2 together 8N2 of individual 8bit * N data comparator circuit 8NIndividual comparative result A=B signal output part, latter's low level is effective, each
Figure BSA00000406553700032
Parallel connection constitutes 2 8NThe comparative result A=B signal output of individual 8bit * N data comparator circuit allows control end
Figure BSA00000406553700033
8bit * N binary data comparator is formed by the combination of 8bit binary data comparator, and a 8bit binary data comparator is formed by the combination of 4bit binary data comparator.
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.
Anti-lightning strike and surge circuit is made up of a fuse and a piezo-resistance polyphone.
Figure BSA00000406553700034
Level shifting circuit is made up of in conjunction with four electrochemical capacitors two MAX232.
2 8N/ 2 groups of electronic switching circuits comprise 2 8N/ 2 groups of electronic switching circuits, each structure of organizing electronic switching circuit is identical, comprises separately: No. 1 alternating current electronic switching circuit and 1 road light current electronic switching circuit.
The 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 collector resistance, a light-emitting diode 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 group electronic switching circuit, base biasing resistor is connected in parallel on the emitter junction of PNP triode, the emitter of this PNP triode connects positive source, its base stage and collector resistance, the collector electrode series connection of light-emitting diode and NPN triode, the emitter of NPN triode is connected to power cathode, 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, 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 alternating current electronic switching circuit.
The 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 as the signal input end of this group electronic switching circuit, the emitter of triode is connected to power cathode, its collector electrode is connected respectively to an end of the coil of the positive pole of diode and direct current relay, 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 light current electronic switching circuit.
The utility model has constituted the interface between computer and the home electronic appliance, two output interconnection output order data with serial port, and to send the output of data wire control command data, its advantage is: on the one hand, mode by the cascade SI PO shift register, adopt the data comparator technology, can promptly expand the number of the electronic apparatus that needs management as required, on the other hand, only use an input interconnection just can detect the state of 8 Sensor of Switch-Output Type, described method does not need to adopt the one chip microcomputer chip, be particularly suitable for a comparator circuit, these three unit combination of rest-set flip-flop and electronic switch are to single electrical equipment itself, be used to transform existing electrical equipment, enable network management.
Description of drawings
Below in conjunction with accompanying drawing, further specify the utility model.
Fig. 1 is the sensor interface circuitry part of circuit theory diagrams of the present utility model, wherein, and S a..., S hRepresentative sensor.
Fig. 2 is the transmission data command part of circuit theory diagrams of the present utility model, the situation of corresponding N=2.
Fig. 3 is the schematic diagram of one group of electronic switching circuit.
Fig. 4 is made of the circuit theory diagrams of a 8bit binary data comparator 4bit binary data comparator.
Among the figure, 001.-32768. electronic switching circuit, 11., 12.
Figure BSA00000406553700041
Level shifting circuit, 13., the 14.8bit SI PO shift register, 15.2 8NThe individual rest-set flip-flop circuit of/2 (=65536/2=32768 (N=2)), 16.8bit incorporate into and go here and there out shift register, 31. single-pole double throw direct current electromagnetic relay, 32. solid-state relay SSR, 5. voltage-stabilized power supply circuit, 51. anti-lightning strike and surge circuit, 6.USB interface, 7.USB change the serial port circuit, 8.RS232C interface, 9.2 8NIndividual 8bit * N data comparator circuit, 91.-93.4bit binary data comparator.
Embodiment
As shown in Figure 2,74HC164 is all adopted in 8bit SI PO shift register (13) and (14), 8bit * N SI PO shift register (N=2) is formed in its two cascade, wherein, being in highest order in the output of 74HC164 (13) of low level is connected to of being in high-order 74HC164 (14) and seals in signal input part B, at output interconnection RTS, can send out 8 * N=8 * 2=16 bit binary data instruction accurately under the operation of DTR, its key points for operation are: be before the rising edge arrival of RTS at clock pulse signal, need be ready to the one digit number of transmission according to the serial signal input B of Di to the middle 74HC164 (13) of 8bit * N SI PO shift register (N=2) by DTR; The rising edge of clock pulse signal arrives, and the displacement action will take place the parallel output terminal of 74HC164, for example: Q0=Di, Q0 → Q1 → Q2 → ... → Q6 → Q7; Send out before the data command output earlier is no less than 8bit * N position 0 and comes the 8bit of zero clearing 8bit * N SI PO shift register * N parallel-by-bit data output end at every turn.
2 8NIndividual 8bit * N data comparator circuit (9) is by 2 8NIndividual 8bit * N data comparator is formed, and a 8bit * N data comparator is formed by several 8bit binary data comparator combinations, a 8bit binary data comparator can be formed by the combination of 4bit binary data comparator again, its basic principle has been formed a 8bit binary data comparator with 3 tetrad data comparator integrated circuits (91), (92) with (93) as shown in Figure 4.Among the figure, one group of data input pin A of comparator (92) and (91) 3A 2A 1A 0, A 3A 2A 1A 0Constituted one group of comparison signal input A of this comparator successively 7A 6A 5A 4A 3A 2A 1A 0Another group data input pin B of comparator (92) and (91) 3B 2B 1B 0, B 3B 2B 1B 0Constituted another group comparison signal input B of this comparator successively 7B 6B 5B 4B 3B 2B 1B 0, they come the prepositioned instruction sign indicating number by eight single-pole double-throw switch (SPDT)s.Utilize one group of data input pin B of comparator (93) 3B 2B 1B 0Highest order B 3Constitute the output of comparative result A=B signal and allow control end If promptly
Figure BSA00000406553700052
The A=B signal output part of comparator (93) is always low level.Therefore, the pull down resistor R among Fig. 2 000..., R 65535Can.
2 8NThe comparative result A=B signal output of individual 8bit * N data comparator circuit (9) allows control end
Figure BSA00000406553700053
Send data wire TXD control by serial port, guaranteed that instruction correctly is transferred to 2 in the process of " sealing in the 8bit that walks abreast out * N director data " 8NR, the S control end of/2 (=65536/2=32768 (N=2)) individual rest-set flip-flop circuit (15), it is according to being: serial port sends line and is in high level at ordinary times, and the information format of asynchronous serial communication is: " character+parity check bit of (1 low level) start bit+transmission+(1,1.5 or 2 high level) position of rest ".
As shown in Figure 1,8bit incorporates into and goes here and there out shift register (16) and be made up of a 74HC165.When DTR is the parallel input data displacement/loading control end SHIFT/LOAD of 74HC165 when being low level, the data ABCDEFGH of 8 parallel inputs of 74HC165 is loaded.When RTS is the pulse of the positive transition of the every input of clock signal input terminal of 74HC165, the data of 8 parallel inputs that 74HC165 is loaded take place once to be shifted successively: A → B → ... → G → H → Q HTherefore, event attribute according to serial communication control MSComm32.OCX, from the 8th pin CTS of RS232C interface (or the first pin CD, the 6th pin DSR, non-nine kinds of needles RI) just can interrupt response mode or the mode of inquiry analyze 8 road digital quantity output type transducer S a..., S hState.Among Fig. 1, the parallel input of 74HC165 (16) is connected with 8 pull-up resistor R a... R h, so that do not insert transducer S a..., S hThe time its input also be in stable level state.
The event attribute of serial communication control MSComm32.OCX comprises:
1ComEvSend: the number of characters in the transmission register also lacks than Sthreshold;
2ComEvReceive: receive Sthreshold character, this incident continues to produce up to removing from receiving register with the Input attribute;
The state of 3ComEvCTS:Clear_to_Send line changes;
The state of 4ComEvDSR:Data_Set_Ready line changes to 0 from 1;
The state of 5ComEvCD:Carrier_Detect line changes;
6ComEvRing: detect bell signal, but, the attribute MSComm32.CTSholding/.DSRholding/.DCDholding that does not possess the serial communication control can't inquire about the height situation that detects its level, and some UART (asynchronous reception-transmitter) may not support this incident;
7ComEvEOF: receive the end of data (ASCII is 26) character.
Obviously, can influence 8bit in the time of operation 8bit * N SI PO shift register (13) and (14) and incorporate into and go here and there out the operating state of shift register (16), at this moment, we do not go to be concerned about that the event attribute of serial communication control MSComm32.OCX is just passable.Operation 8bit incorporates the operating state that also can influence 8bit * N SI PO shift register (13) and (14) when going here and there out shift register (16) into, at this moment, as long as serial port data transmission line TXD does not send any data, just can be so that 2 8NThe comparative result A=B signal output of individual 8bit * N data comparator circuit (9) allows control end
Figure BSA00000406553700061
Be in the high level disarmed state, thus its 2 8NIndividual comparative result A=B signal output part all is in low level state, does not influence 2 8NEach of/2 (=65536/2=32768 (N=2)) individual rest-set flip-flop circuit (15) guaranteed that to R, S control end misoperation does not take place in electronic switching circuit (001)-(32768).

Claims (10)

1. serial port interconnection management core is to instruction type No. 8 transducers 2 8N/ 2 groups of household electrical appliances junction blocks is characterized in that: comprise RS232C interface, USB interface, USB change the serial port circuit,
Figure FSA00000406553600011
Level shifting circuit, 8bit * N SI PO shift register, 2 8NIndividual 8bit * N data comparator circuit, 2 8N/ 2 rest-set flip-flop circuit, 2 8N/ 2 groups of electronic switching circuits, 8bit incorporate into and go here and there out shift register, the 8 pairs of sensor terminals, voltage-stabilized power supply circuit, anti-lightning strike and surge circuit and power line and plug thereof; Wherein, USB interface is connected to the corresponding signal input part that USB changes the serial port circuit, the corresponding port line parallel of the latter's signal output part and RS232C interface; The 5th pin GND of RS232C interface is connected to power cathode, and its 4th pin DTR, the 7th pin RTS, the 3rd pin TXD are connected respectively to A RS232C level signal input of level shifting circuit, the TTL/CMOS level signal output of the corresponding RTS of this level shifting circuit is connected respectively to 8bit * N SI PO shift register and 8bit to be incorporated into and goes here and there out the clock signal input terminal of shift register, the TTL/CMOS level signal output of the corresponding DTR of this level shifting circuit is connected respectively to serial signal input of 8bit * N SI PO shift register and 8bit to be incorporated into and goes here and there out the parallel input data displacement/loading control end of shift register, and the TTL/CMOS level signal output of this level shifting circuit correspondence TXD is connected to 2 8NThe comparative result A=B signal output of individual 8bit * N data comparator circuit allows control end Also connect a pull-up resistor to positive source; The 8th pin CTS of serial port is connected to
Figure FSA00000406553600014
A RS232C level signal output of level shifting circuit, the TTL/CMOS level signal input of corresponding therewith this level shifting circuit are connected to 8bit to be incorporated into and goes here and there out the serial signal output of shift register; 8 * N signal output part of 8bit * N SI PO shift register and 2 8NOne group of comparison signal input of individual 8bit * N data comparator circuit is in parallel in regular turn, and 2 8N2 of individual 8bit * N data comparator circuit 8NIndividual comparative result A=B signal output part connects a pull down resistor respectively to power cathode, also is connected to 2 in regular turn respectively 8N2 of/2 rest-set flip-flop circuit 8N/ 2 opposed 1 end S and reset terminal R; 2 8N2 of/2 rest-set flip-flop circuit 8N/ 2 output Q are 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 received civil power with anti-lightning strike in parallel with the surge circuit by power line and plug thereof.
2. serial port interconnection management core according to claim 1 is to instruction type No. 8 transducers 2 8N/ 2 groups of household electrical appliances junction blocks is characterized in that: 8bit * N SI PO shift register is made up of the cascade of N piece 8bit SI PO shift register.
3. serial port interconnection management core according to claim 1 is to instruction type No. 8 transducers 2 8N/ 2 groups of household electrical appliances junction blocks, it is characterized in that: 8bit incorporates into and goes here and there out shift register and be made up of a 74HC165, its sheet choosing terminates to power cathode, its cascade carry signal input DS receives positive source, its 8 parallel signal inputs connect a pull-up resistor respectively to positive source, also constitute 8 pairs of sensor terminals with power cathode respectively.
4. serial port interconnection management core according to claim 1 is to instruction type No. 8 transducers 2 8N/ 2 groups of household electrical appliances junction blocks is characterized in that: 2 8NIndividual 8bit * N data comparator circuit is by 2 8NIndividual 8bit * N binary data comparator is formed, and each 8bit * N binary data comparator has two groups of comparison signal inputs, and one group of comparison signal input of each 8bit * N binary data comparator is in parallel in regular turn respectively, constitutes 2 8NOne group of comparison signal input of individual 8bit * N data comparator circuit; Another group comparison signal input of each 8bit * N binary data comparator is connected respectively to the common port of a single-pole double-throw switch (SPDT), so have 8 * N * 2 8NIndividual single-pole double-throw switch (SPDT), the two ends in addition of these single-pole double-throw switch (SPDT)s are connected respectively to positive source and power cathode; Each 8bit * N binary data comparator also has the signal output part of a comparative result A=B and a comparative result A=B signal output to allow control end
Figure FSA00000406553600021
The former constitutes 2 altogether 8N2 of individual 8bit * N data comparator circuit 8NIndividual comparative result A=B signal output part, latter's parallel connection constitutes 2 8NThe comparative result A=B signal output of individual 8bit * N data comparator circuit allows control end
Figure FSA00000406553600022
5. serial port interconnection management core according to claim 4 is to instruction type No. 8 transducers 2 8N/ 2 groups of household electrical appliances junction blocks is characterized in that: 8bit * N binary data comparator is formed by the combination of 8bit binary data comparator, and a 8bit binary data comparator is formed by the combination of 4bit binary data comparator.
6. serial port interconnection management core according to claim 1 is to instruction type No. 8 transducers 2 8N/ 2 groups of household electrical appliances junction blocks, it is characterized in that: 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.
7. serial port interconnection management core according to claim 1 is to instruction type No. 8 transducers 2 8N/ 2 groups of household electrical appliances junction blocks is characterized in that: anti-lightning strike and surge circuit is made up of a fuse and a piezo-resistance polyphone.
8. serial port interconnection management core according to claim 1 is to instruction type No. 8 transducers 2 8N/ 2 groups of household electrical appliances junction blocks is characterized in that: 2 8N/ 2 groups of electronic switching circuits comprise 2 8N/ 2 groups of electronic switching circuits, each structure of organizing electronic switching circuit is identical, comprises No. 1 alternating current electronic switching circuit and 1 road light current electronic switching circuit separately.
9. serial port interconnection management core according to claim 8 is to instruction type No. 8 transducers 2 8N/ 2 groups of household electrical appliances junction blocks is characterized in that: the 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 collector resistance, a light-emitting diode 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 group electronic switching circuit, base biasing resistor is connected in parallel on the emitter junction of PNP triode, the emitter of this PNP triode connects positive source, its base stage and collector resistance, the collector electrode series connection of light-emitting diode and NPN triode, the emitter of NPN triode is connected to power cathode, 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, 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 alternating current electronic switching circuit.
10. serial port interconnection management core according to claim 8 is to instruction type No. 8 transducers 2 8N/ 2 groups of household electrical appliances junction blocks is characterized in that: the 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 as the signal input end of this group electronic switching circuit, the emitter of triode is connected to power cathode, its collector electrode is connected respectively to an end of the coil of the positive pole of diode and direct current relay, 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 light current electronic switching circuit.
CN2010206962356U 2010-12-29 2010-12-29 Command-type 8-circuit sensor 28N/2 group appliance wire holder managed and checked by serial port junctor Expired - Fee Related CN202050398U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102571063A (en) * 2010-12-29 2012-07-11 重庆工商大学 Terminal block for managing and verifying command-driven 8 channels of sensors and 28N/2 sets of domestic appliances by using serial port and tie lines

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102571063A (en) * 2010-12-29 2012-07-11 重庆工商大学 Terminal block for managing and verifying command-driven 8 channels of sensors and 28N/2 sets of domestic appliances by using serial port and tie lines
CN102571063B (en) * 2010-12-29 2015-04-22 重庆工商大学 Terminal block for managing and verifying command-driven 8 channels of sensors and 28N/2 sets of domestic appliances by using serial port and tie lines

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