CN2068736U - Passive numeric coding transmitter connected by double lead wire - Google Patents
Passive numeric coding transmitter connected by double lead wire Download PDFInfo
- Publication number
- CN2068736U CN2068736U CN 90204254 CN90204254U CN2068736U CN 2068736 U CN2068736 U CN 2068736U CN 90204254 CN90204254 CN 90204254 CN 90204254 U CN90204254 U CN 90204254U CN 2068736 U CN2068736 U CN 2068736U
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- CN
- China
- Prior art keywords
- transmitter
- circuit
- generating circuit
- power supply
- pulse
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Abstract
The utility model relates to a passive numeric coding transmitter connected through double lead wires, comprising a pulse-generating circuit, a stabilized voltage output circuit, a time-base oscillation circuit, a time sequence generating circuit, a section-position registers, a bus drive circuit, etc. The utility model adopts an external triggering type digital transmission circuit; a capacitor in a transmitter is charged through an externally connected common power supply, and the electric energy is used as a power supply; a circuit design which can be charged to work after triggered is used; a power wire and a signal wire are combined to use, and systems are connected and transmitted through a pair of leading wires. The quiescent current of the transmitter is smaller than 5 muA. The oscillation-removing property of a trigger circuit is good, the address code overmeasure is large, and the selection is convenient. The utility model is suitable for the occasions, such as a hospital ward, a guest room in a hotel, etc. to be used as a call device, and the utility model can also be used for the occasions that the simplex asynchronous communication needs realizing and the occasions using digital signal to transmit, detect and record.
Description
The utility model relates to the device of digital information and transmission, particularly a kind of digital coding transmitter that is suitable for notifying from a phone call use.
The present line transmission system that uses, different digital information transmission network of single worker's serial that (total receiver) realized from subsystem (transmitter) to main system is if the employing common source needs three buses finish transmission work.Power continuously during work, power consumption is big, cost is high, installation workload is also big.
The objective of the invention is to overcome above-mentioned shortcoming, provide the design And of the especially little transmitter of a kind of power consumption to provide the method for its connection, on line between total receiver of the transmitter of each subsystem that disperse to be provided with and main system is reduced to two from three, make its power line and holding wire multiplexing, reduce cost and energy consumption, be convenient to use.
In order to reach described goal of the invention, the present invention has taked following scheme:
This transmitter is by multidigit address setting switch, indicator light, the external trigger button, shell block, the wiring board of case, band mount pad hole and fairlead and the transmission line that is connected with total receiver are formed, the circuit that is provided with on the wiring board includes external trigger formula pulse-generating circuit, voltage-stabilizing output circuit, time-base generator circuit, timing sequence generating circuit, shift register and bus driving circuits.Only be connected with a pair of transmission line between transmitter and the total receiver, wherein ground wire GND is shared, transmitter power sharing, multiplexing line SGNL double as power line and holding wire use.The power supply of transmitter is taken from the D.C. regulated power supply D among total receiver BJJ, is connected in series current-limiting resistance R before this power supply access multiplexing line earlier
0, avoiding sending in the code signal process, influence the operate as normal of power supply D when haling to low level.Multiplexing line also is connected with the receiving circuit of total receiver simultaneously, guarantees code signal transmission and reception that transmitter sends.Transmitter joins by current-limiting resistance and unidirectional breakover element and multiplexing line, and power supply inserts thus, after pulse-generating circuit triggers, and output pulse control voltage stabilizing circuit, triode conducting, output V
0, time-base generator circuit, timing sequence generating circuit, shift register (U
2, U
1) start working.Equal no-output when static, whole transmitter circuit system are in not trigger just idlely treats the triggering state, thereby power consumption is minimum.There is the leakage current loss in some circuit when static, and the complete machine electrostatic current of every transmitter is less than 5 μ A.
Transmitter triggers with the afterpulse output time promptly can finish operate as normal as long as keep greater than signal sending time.
Three tie points are arranged between transmitter and the multiplexing line, wherein be connected to unidirectional breakover element on the path of two tie points, electric current can adverse current, the influence in the time of can not being subjected to other transmitter signalings.Another tie point is followed the promotion pipe of bus driving circuits, and the base stage no signal is cut-off state when static,
Actual test shows, this transmitter and system works situation thereof are normally good, and power line and holding wire can be realized multiplexing, and transmitter complete machine quiescent current is less than 5 μ A, by the selection of address switch, single worker that can satisfy various scales notifies from a phone call and digital coding transmission use.If select three decade switches, then maximum puts the sign indicating number numbering from 000～999, amounts to No. 1000, and quiescent dissipation is only about 5mA.
Embodiment description of drawings of the present utility model is as follows
Fig. 1 is the transmitter architecture schematic diagram
Fig. 2 is the winding diagram of transmitter and total receiver
Fig. 3 is the circuit theory diagrams of transmitter
Fig. 4 is a transmitter work schedule oscillogram
As shown in Figure 1, transmitter is by case 2, base 5, and wiring board 6 assembles.Three decimal system thumbwheel switches 1, trigger button 3, indicator lights 4 directly are welded on the wiring board 6, and indicator light adopts light-emitting diode DG.
Transmitter F among Fig. 2
1, F
2F
mWith total receiver BJJ(code receiver), be interconnected to grid by multiplexing line SGNL and ground wire GND.Be serially connected with current-limiting resistance R between the direct-flow voltage regulation source D in multiplexing line and the total receiver
0Simultaneously multiplexing line is connected with receiving unit in total receiver again, and this multiplexing line is power supply, signal dual use line.
The circuit theory of transmitter as shown in Figure 3, part wherein is:
1, by R
4, D
3, C
4, C
5, D
2, R
5, BG
4, BG
5The pulse-generating circuit of forming works the control switch effect that triggers voltage-stabilizing output circuit (power supply).
2, by R
3, DW, DG
3The voltage-stabilizing output circuit of the triggering control of forming.
3, by R
2, DG, D
1, C
2, C
3The capacitor charging circuit of forming.
4, by R
1, BG
1, BG
2The bus driving circuits of forming.
5, by R
6, R
7, R
8, C
6, C
7, C
8With four NAND gate U
3The shift register work schedule of forming produces circuit.
6, by U
4The time-base generator circuit of being formed.
7, by U
1, U
2The shift-register circuit of being formed.
The circuit of transmitter is by R
4, R
2, BG
1, BG
2Behind the access multiplexing line SGNL, the C in the pulse-generating circuit
5, C
3, and C
2Be charged to high level, multiple tube BG
4, BG
5Be in off-state, the voltage stabilizing out-put supply is pass closed state, U
1QH output also be zero, promote pipe BG
1, BG
2Also be in off-state, be high level on the multiplexing line SGNL.
When the external trigger signal from K
1, K
2Input or when triggering with the button mode shown in the figure, the dynamic change of its course of work is described as follows: button is pressed, C
5On current potential quickly fall to zero volt.Because R
4, R
5Resistance bigger, even button unclamps at once, C
5Still can keep the low level of a period of time, possess the shake of disappearing ability and anti-interference.C
5On potential change become triggering signal through C
4Coupling is through R
5Arrive compound transistor BG
5, BG
4Base stage, this manages conducting thereupon.Adopting multiple tube in the pulse-generating circuit, is in order to improve multiplication factor, to make R
4, R
5Obtain can be greatly, C
5Get point, improve the reliability of the shake that disappears.Its ON time is by C
4, R
5Value decision, can regulate, require that trigger pulse width should be greater than U in other words during this period of time
1Serial output terminal sends the required time of digitally encoded signal.At multiple tube BG
5, BG
4In the time of conducting, C
3Pass through R
3Discharge ， And makes BG under the effect of DW
3Base bias stable, BG
3Conducting, DG lights, output voltage V
0, C
1Strobe.After this, U
4, U
3, U
2, U
1Begin to work on power.U
4Produce pulse square wave, U
3Be four NAND gate integrated circuits, it and three groups of time-delay Resistor-Capacitor Unit R
6, C
6, R
7, C
7, R
8, C
8Form timing sequence generating circuit together, door
1, the door
2Be flip and flop generator, door
3, the door
4Use as inverter.
Fig. 4 is the work schedule oscillogram of present embodiment
V wherein
0Be U
4, U
3, U
2, U
1Supply voltage
CK shift register clock signal input part
CLR shift register clear terminal
The 1NH shift register clock is forbidden end
The QH shift register moves to right and goes here and there out end
The code signal of SGNL multiplexing line
Shift register U
2, U
1Thumbwheel switch S
1, S
2, S
3The address coding signal that is provided with is with level"1", and the level "0" form is exported from serial output terminal, is added to promotion pipe (the multiple tube BG of bus driving circuits
1, BG
2) base stage, promote by control the conducting of pipe with by signal is sent, code signal is transferred to total receiver along multiplexing line SGNL, is received, is handled by total receiver.
Shift register U
1Output QH is connected simultaneously with the input of bus driving circuits with timing sequence generating circuit in U
3Door
3Connect.Shift register (U
2, U
1) device selects to utilize clock signal C K synchronously to change the register that presets displacement, as 74LS166.
Claims (6)
1, a kind of passive digital coding transmitter that connects with double lead, mainly by address setting switch (1), outer casing (2), indicator light (3), button (4), wiring board (6), base (5) and be connected transmission line with total receiver (BJJ) and form, the circuit that is provided with on the wiring board includes pulse-generating circuit, voltage-stabilizing output circuit, the time-base generator circuit, timing sequence generating circuit, shift register and bus driving circuits is characterized in that:
A, transmitter F
1, F
2F
MCommon power source be arranged on D.C. regulated power supply D in total receiver, transmitter and total receiver with a pair of transmission line (SGNL GND) is connected, multiplexing line (SGNL) double as power line and holding wire,
The power supply of b, transmitter is picked out by the D.C. regulated power supply D in total receiver, introduces multiplexing line (SGNL), and multiplexing line is the current-limiting resistance R by being connected in series on the one hand
0D is connected with power supply, to guarantee multiplexing realization; Be connected with receiving circuit in total receiver again on the other hand, guarantee the transmission and the reception of transmitter coding signal,
Be connected to current-limiting resistance (R in c, transmitter and the power path that multiplexing line (SGNL) is connected
4, R
2) and unidirectional breakover element (D
3, DG).The trigger impulse output control voltage-stabilizing output circuit of pulse-generating circuit is opened output voltage V
0, pierce circuit (V
4), timing sequence generating circuit, shift register (U
2, U
1) start working.
2, transmitter as claimed in claim 1 is characterized in that in the pulse-generating circuit adopting one with compound transistor (BG
4, BG
5) trigger tube formed.
3, transmitter as claimed in claim 1 is characterized in that also being provided with in the pulse-generating circuit one group of Resistor-Capacitor Unit (R that is used to regulate trigger pulse width
5, C
4).
4, transmitter as claimed in claim 1 is characterized in that timing sequence generating circuit is with monolithic four NAND gate U
3And Resistor-Capacitor Unit (R
6, C
6, R
7, C
7, R
8, C
8) form.
5, transmitter as claimed in claim 1 is characterized in that shift register U
1Output QH and the input Lian Jie ， And of bus driving circuits and also with timing sequence generating circuit in U
3Door
3Connect.
6, transmitter as claimed in claim 1 is characterized in that shift register (U
2, U
1) be to utilize clock CK synchronously to change the register that presets and be shifted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90204254 CN2068736U (en) | 1990-04-05 | 1990-04-05 | Passive numeric coding transmitter connected by double lead wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90204254 CN2068736U (en) | 1990-04-05 | 1990-04-05 | Passive numeric coding transmitter connected by double lead wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2068736U true CN2068736U (en) | 1991-01-02 |
Family
ID=4885277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90204254 Withdrawn CN2068736U (en) | 1990-04-05 | 1990-04-05 | Passive numeric coding transmitter connected by double lead wire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2068736U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462735C (en) * | 2002-08-29 | 2009-02-18 | 泰拉雷肯有限公司 | Ultrasound transceiver system for remote operation through minimal number of connecting wires |
| CN102281177A (en) * | 2011-06-01 | 2011-12-14 | 肇庆市科海技术发展有限公司 | Bus alarm system based on current loop |
| CN103176418A (en) * | 2013-03-08 | 2013-06-26 | 深圳市泰昂能源科技股份有限公司 | Address coding method for intelligent feeder switch module in power system |
-
1990
- 1990-04-05 CN CN 90204254 patent/CN2068736U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100462735C (en) * | 2002-08-29 | 2009-02-18 | 泰拉雷肯有限公司 | Ultrasound transceiver system for remote operation through minimal number of connecting wires |
| CN102281177A (en) * | 2011-06-01 | 2011-12-14 | 肇庆市科海技术发展有限公司 | Bus alarm system based on current loop |
| CN103176418A (en) * | 2013-03-08 | 2013-06-26 | 深圳市泰昂能源科技股份有限公司 | Address coding method for intelligent feeder switch module in power system |
| CN103176418B (en) * | 2013-03-08 | 2015-08-19 | 深圳市泰昂能源科技股份有限公司 | The address coding method of Power System Intelligent feeder switch module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |