CN106357342A - Data transmission device for bulk commodity transaction system - Google Patents
Data transmission device for bulk commodity transaction system Download PDFInfo
- Publication number
- CN106357342A CN106357342A CN201610968408.7A CN201610968408A CN106357342A CN 106357342 A CN106357342 A CN 106357342A CN 201610968408 A CN201610968408 A CN 201610968408A CN 106357342 A CN106357342 A CN 106357342A
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- China
- Prior art keywords
- resistor
- pin
- intervalometer
- resistance
- timer
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a data transmission device for a bulk commodity transaction system. The data transmission device comprises a timer, an amplifier, a first capacitor, a second capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a diode and an audion, wherein NE555JG is used as the timer; an output end of the amplifier is connected with an RST pin of the timer; the first capacitor is connected with a CVOLT pin of the timer; the second capacitor is connected with a THR pin and a TRIG pin of the timer; the fourth resistor is connected with an OUT pin of the timer; the second resistor is arranged as an adjustable resistor; an adjusting end of the second resistor is connected with the third resistor; two fixed ends of the second resistor are respectively connected with a power supply and an anode of the diode; the VCC pin of the timer is connected with the power supply; the DISC pin of the timer is connected with a circuit between the anode of the diode and the second resistor. The data transmission device can generate a waveform by adopting the timer for switching a resetting mode and the waveform becomes a carrier of a transmission signal, so that the anti-jamming capability of the infrared wirelessly transmitted signal and the distance of the signal transmission can be increased.
Description
Technical field
The present invention relates to a kind of circuit is and in particular to a kind of data sending device of staple commodities transaction system.
Background technology
Usually it is applied to the infrared wireless data Transmission system based on chip microcontroller, because based on list in commodity trading system
The infrared wireless data Transmission system that piece machine is realized adopts the serial ports of single-chip microcomputer to send data, due to using the string of single-chip microcomputer
Mouth sends data, and such signal frequency is relatively low, and jamproof poor-performing will be directly connected to wireless infrared transmitting system energy
No normal wireless communication and the coverage of communication, therefore, signal frequency is low, interference free performance is poor is urgent problem.
Content of the invention
The technical problem to be solved is that wireless infrared transmitting signal frequency is relatively low, jamproof poor-performing
Problem, it is therefore intended that providing a kind of data sending device of staple commodities transaction system, produces carrier wave, improves infrared wireless data
The anti-interference of transmission.
The present invention is achieved through the following technical solutions:
A kind of data sending device of staple commodities transaction system, including intervalometer, amplifier, the first electric capacity, the second electric capacity,
One resistance, second resistance, 3rd resistor, the 4th resistance, diode and audion, intervalometer adopts ne555jg, amplifier defeated
Go out end to be connected with the rst pin of intervalometer, first electric capacity one end is connected with the cvolt pin of intervalometer, the other end is grounded；Second
Electric capacity one end is connected with the thr pin of intervalometer and trig pin, and the other end is grounded；First resistor one end is connected with power supply, separately
One end is connected with the colelctor electrode of audion；The grounded emitter of audion；4th resistance one end is connected with the out of intervalometer, separately
One end is connected with the base stage of audion；Second resistance is adjustable resistance, and its adjustable side is connected with 3rd resistor, and second resistance two is solid
Fixed end is connected with the anode of power supply and diode respectively；3rd resistor is with respect to the other end connecting second resistance and diode
The trig pin of negative electrode and intervalometer connects；The vcc pin of intervalometer is connected with power supply；The disc pin of intervalometer is connected to two
On circuit between pole pipe anode and second resistance.
In order to solve the problems, such as that wireless infrared transmitting signal frequency is relatively low, jamproof poor-performing, need transmission
Signal modulation it is therefore desirable to the circuit of a generation carrier wave, adopts on a signal more much higher than frequency modulating signal
Ne555jg intervalometer and peripheral circuit can constitute carrier signal generator, can produce 38khz carrier wave, and this is one kind no stable state electricity
Road, after switching on power, need not additional flop signal, can automatically constantly overturn, produce square wave.
Further, power supply is positive 5v power supply.
Further, it is also associated with light emitting diode between first resistor and the colelctor electrode of audion, light emitting diode
Anode is connected with first resistor, and the negative electrode of light emitting diode is connected with the colelctor electrode of audion.Light emitting diode can indicate transmission
State.
The present invention compared with prior art, has such advantages as and beneficial effect: the present invention uses the reset of intervalometer
State switch to produce waveform, become the carrier wave of transmission signal, the anti-interference energy of the signal of wireless infrared transmitting increased with this
Power and the distance of signal transmission.
Brief description
Accompanying drawing described herein is used for providing the embodiment of the present invention is further understood, and constitutes of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is present configuration schematic diagram.
Specific embodiment
For making the object, technical solutions and advantages of the present invention become more apparent, with reference to embodiment and accompanying drawing, to this
Invention is described in further detail, and the exemplary embodiment of the present invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment
As shown in figure 1, a kind of data sending device of staple commodities transaction system, including intervalometer, amplifier u, first
Electric capacity c1, the second electric capacity c2, first resistor r1, second resistance r2,3rd resistor r3, the 4th resistance r4, light emitting diode d1, two
Pole pipe d2 and audion q.Intervalometer adopts ne555jg, and amplifier adopts 74hc04, and the first electric capacity c1 is 0.01uf, the second electricity
Appearance c2 is 3300pf, and first resistor r1 definite value resistance is 10k ohm, and second resistance r2 is 20 ohm, and 3rd resistor r3 is 5.1k
Ohm, the 4th resistance r4 is 1k ohm, and light emitting diode d1 is the light emitting diode of model se308, and diode d2 is
1n4148, audion q are npn.
The outfan of amplifier u is connected with the rst of intervalometer, and first electric capacity c1 one end is connected with the cvolt pin of intervalometer
Connect, the other end is grounded；Second electric capacity c2 one end is connected with the thr pin of intervalometer and trig pin, and the other end is grounded；First electricity
Resistance r1 one end is connected with+5v power supply, and the other end is connected with the anode of light emitting diode d1；The negative electrode of light emitting diode d1 and three poles
The colelctor electrode of pipe q connects；The grounded emitter of audion q；4th resistance r4 one end is connected with the out of intervalometer, the other end with
The base stage of audion q connects；Second resistance r2 is adjustable resistance, and its adjustable side is connected with 3rd resistor r3, second resistance r2 two
Individual fixing end is connected with the anode of power supply and diode d2 respectively；3rd resistor r3 is with respect to the other end connecting second resistance r2
It is connected with the negative electrode of diode d2 and the trig of intervalometer；Vcc and+5v the power supply of intervalometer is connected；The disc pin of intervalometer
It is connected on the circuit between diode d2 anode and second resistance r2.
Ne555jg comprises two voltage comparators, basic rs trigger inside it, lets out fulgurite, discharge tube and three
The potentiometer that individual 5k ω resistance is constituted.After system switches on power, power supply passes through second resistance r2 and 3rd resistor r3 to second
Electric capacity c2 charges, the out end output high level of intervalometer；The ne555jg when the voltage on the second electric capacity c2 is higher than 2/3vcc
Let out will turning on of fulgurite, at this moment the second electric capacity c2 is discharged by 3rd resistor r3, at this moment the out end of intervalometer is output as low electricity
Flat；When the voltage on the second electric capacity c2 is less than 1/3vcc, discharge tube is cut off, and at this moment proceeds by charging, the high electricity of output again
Flat；By the carrier waveform needed for the continuous repetition generation system of said process.Need in the present embodiment transmit signal be by
Microcontroller serial port sends out, and signal can be anti-phase in transmission process, leads to receive, therefore employs amplifier, this
Individual amplifier be inverting amplifier 74hc04 it is achieved that the amplification of the discovery of signal and signal, then use through 74hc04
Signal control ne555jg intervalometer rst pin be reset terminal.The reset terminal of ne555jg is Low level effective, therefore when
When the signal that 74hc04 exports ne555jg reset terminal is high level, then ne555jg output signal is the square wave of 38khz, resets
When holding as low level, then ne555jg resets, and exports low level.
Said process just completes the task by the signal modulation of transmission in the carrier signal of 38khz, solves infrared
Wireless signal transmission frequency is relatively low, the problem of jamproof poor-performing.
Above specific embodiment, has carried out detailed further to the purpose of the present invention, technical scheme and beneficial effect
Illustrate, be should be understood that the specific embodiment that these are only the present invention, the protection model being not intended to limit the present invention
Enclose, all any modification, equivalent substitution and improvement within the spirit and principles in the present invention, done etc., should be included in the present invention
Protection domain within.
Claims (3)
1. a kind of data sending device of staple commodities transaction system it is characterised in that include intervalometer, amplifier (u), first
Electric capacity (c1), the second electric capacity (c2), first resistor (r1), second resistance (r2), 3rd resistor (r3), the 4th resistance (r4), two
Pole pipe (d2) and audion (q), described intervalometer adopts ne555jg, the outfan of described amplifier (u) and the rst of intervalometer
Pin connects, and described first electric capacity (c1) one end is connected with the cvolt pin of intervalometer, and the other end is grounded；Described second electric capacity
(c2) one end is connected with the thr pin of intervalometer and trig pin, and the other end is grounded；Described first resistor (r1) one end and power supply
Connect, the other end is connected with the colelctor electrode of audion (q)；The grounded emitter of described audion (q)；Described 4th resistance (r4)
One end is connected with the out of intervalometer, and the other end is connected with the base stage of audion (q)；Described second resistance (r2) is adjustable resistance,
Its adjustable side is connected with 3rd resistor (r3), and second resistance (r2) two fixing end is connected with the anode of power supply and diode (d2) respectively
Connect；Described 3rd resistor (r3) is with respect to the negative electrode of the other end and the diode (d2) connecting second resistance (r2) and intervalometer
Trig pin connects；The vcc pin of described intervalometer is connected with power supply；The disc pin of described intervalometer is connected to diode
(d2) on the circuit between anode and second resistance (r2).
2. a kind of data sending device of staple commodities transaction system according to claim 1 is it is characterised in that described electricity
Source is positive 5v power supply.
3. a kind of data sending device of staple commodities transaction system according to claim 1 is it is characterised in that described
One resistance (r1) is also associated with light emitting diode (d1), the anode of light emitting diode (d1) and the colelctor electrode of audion (q) between
It is connected with first resistor (r1), the negative electrode of light emitting diode (d1) is connected with the colelctor electrode of audion (q).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610968408.7A CN106357342A (en) | 2016-10-28 | 2016-10-28 | Data transmission device for bulk commodity transaction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610968408.7A CN106357342A (en) | 2016-10-28 | 2016-10-28 | Data transmission device for bulk commodity transaction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106357342A true CN106357342A (en) | 2017-01-25 |
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ID=57864834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610968408.7A Pending CN106357342A (en) | 2016-10-28 | 2016-10-28 | Data transmission device for bulk commodity transaction system |
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| Country | Link |
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| CN (1) | CN106357342A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031080A (en) * | 2018-06-01 | 2018-12-18 | 安庆师范大学 | It is a kind of for the circuit of test diode and triode, circuit board and detector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859401A (en) * | 2010-06-21 | 2010-10-13 | 数源科技股份有限公司 | Passenger flow volume statistic realization method and system of advertising machine |
| CN203574656U (en) * | 2013-08-15 | 2014-04-30 | 安徽科技学院 | Infrared data transceiver |
| CN204087485U (en) * | 2014-09-23 | 2015-01-07 | 国家电网公司 | A kind of based on monolithic processor controlled infrared communication interface circuit |
| CN204442808U (en) * | 2015-04-03 | 2015-07-01 | 河南昊晟电子科技有限公司 | A kind of corridor LED illumination lamp based on human body sensing |
| CN204719965U (en) * | 2015-06-23 | 2015-10-21 | 深圳市银河表计股份有限公司 | A kind of USB turns 38kHz modulated infrared light communication interface circuit |
-
2016
- 2016-10-28 CN CN201610968408.7A patent/CN106357342A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859401A (en) * | 2010-06-21 | 2010-10-13 | 数源科技股份有限公司 | Passenger flow volume statistic realization method and system of advertising machine |
| CN203574656U (en) * | 2013-08-15 | 2014-04-30 | 安徽科技学院 | Infrared data transceiver |
| CN204087485U (en) * | 2014-09-23 | 2015-01-07 | 国家电网公司 | A kind of based on monolithic processor controlled infrared communication interface circuit |
| CN204442808U (en) * | 2015-04-03 | 2015-07-01 | 河南昊晟电子科技有限公司 | A kind of corridor LED illumination lamp based on human body sensing |
| CN204719965U (en) * | 2015-06-23 | 2015-10-21 | 深圳市银河表计股份有限公司 | A kind of USB turns 38kHz modulated infrared light communication interface circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031080A (en) * | 2018-06-01 | 2018-12-18 | 安庆师范大学 | It is a kind of for the circuit of test diode and triode, circuit board and detector |
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Application publication date: 20170125 |
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