CN2047864U - Overtaking signal receiver using tone decoder - Google Patents
Overtaking signal receiver using tone decoder Download PDFInfo
- Publication number
- CN2047864U CN2047864U CN 89202221 CN89202221U CN2047864U CN 2047864 U CN2047864 U CN 2047864U CN 89202221 CN89202221 CN 89202221 CN 89202221 U CN89202221 U CN 89202221U CN 2047864 U CN2047864 U CN 2047864U
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- CN
- China
- Prior art keywords
- tone
- tone decoder
- receiver
- circuit
- overtaking
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The utility model discloses an overtaking signal receiver using a tone decoder, composed of a second stage operational amplifier, a tone decoder, a time oscillator, a tone oscillator, an acoustooptic displayer, and a lamp drive circuit, etc. The acoustooptic displaying is carried by the receiver when an overtaking signal is received. The overtaking signal receiver using a tone decoder is matched with the application number 86205286 to be used; the effective acceptance range of the overtaking signal receiver using a tone decoder is 100-200 meters. When a high speed car overtaking a low speed car, the function of the overtaking signal receiver using a tone decoder is obvious.
Description
The utility model relates to the optical communication field.
Common optical receiver can run into illumination noise when light-sensitive element and flood that receiver just can not pick up useful signal when overtaking other vehicles signal when receiving as the infrared signal of overtaking other vehicles, even receiver can be reported to the police noise as the signal of overtaking other vehicles.For anti-automotive ignition system disturbs, the normal optical receiver needs strict electromagnetic shielding, otherwise also can report by mistake.In addition, when sunlight direct projection in the afternoon tailstock, the modulation that Vehicular vibration forms can produce wrong report equally.Usually want desensitization in order to lower these interference, but this can make operating distance become near.
The utility model provides a kind of infrared signal receiver of overtaking other vehicles that adopts the tone decoder circuit, and it can extract useful signal and guarantee distance reception from various interference, circuit also be need not electromagnetic shielding.
Accompanying drawing is the electrical schematic diagram of this infrared receiving set.
This receiver is made up of light-sensitive element (1), first amplifier (2), second amplifier (3), tone decoder (4), display switch pipe (5), lamp drive circuit (6), metre oscillation device (7), beat switching tube (8), tone alternator (9), tone output capacitance (10), sound display (11), optical display unit (12), biasing resistor (13), voice output electric capacity (14) etc.
Can elaborate in conjunction with the accompanying drawings.
When the infrared signal of overtaking other vehicles shone on the light-sensitive element (1), light-sensitive element (1) two ends just induced signal voltage, and this voltage is delivered between two inputs of first amplifier (2).First amplifier (2) is delivered between two inputs of second amplifier (3) after signal is amplified 100 times, and second amplifier (3) is sent to tone decoder (4) after signal is amplified 100 times.
Tone decoder (4) includes a synclator and a sync comparator.During the output of tone decoder (4) (the 8th pin) no signal is high potential 5V, when the signal of being delivered to tone decoder (4) input (the 3rd pin) by second amplifier (3) and synclator are synchronous, sync comparator just makes tone decoder (4) output (the 8th pin) current potential reduce to 0, element noise, light disturb, automotive ignition system disturbs all is random signal, they can not be synchronous with synclator, just can not make output (the 8th pin) current potential of tone decoder (4) reduce to 0 certainly.So this receiver has ability and the antijamming capability that detects small-signal from noise, this receiver circuit also need not shielding simultaneously.Effective receiving range of this receiver is generally at 100-200 rice.Tone decoder (4) adopts the LM567 integrated circuit.
Beat oscillator (7) is an oscillator that is made of amplifier, and frequency of oscillation is that 1.5HZ beat oscillator signal is added between beat open pipe (8) be, makes that internal resistance periodically presents on-off-on-offmode between its ce.Tone alternator (9) also is an oscillator that is made of amplifier, and frequency of oscillation is 1000HZ.Because the collector electrode of beat switching tube (8) is connected on the inverting input of tone alternator (9), so when beat switching tube (8) thus when pressing the inverting input of frequency shift internal resistance short circuit tone alternator (9) of 1.5HZ, tone alternator (9) is just pressed frequency failure of oscillation and the starting of oscillation of 1.5HZ, sends an interrupted 1000HZ whistling signal to display switch pipe (5).
Be added to the base stage of display switch pipe (5) by tone output capacitance (10) by the whistling signal of tone alternator (9) input.The emitter of display switch pipe (5) is connected on the output (the 8th pin) of tone decoder (4).During no extraneous signal, the output of tone decoder (4) (the 8th pin) is high potential 5V, and the base stage of display switch pipe (5) is by biasing resistor (13) ground connection, and base potential is 0V, so the be of display switch pipe (5) knot is reverse biased, this pipe ends.Although the whistling signal has been added to the base stage of display switch pipe (5), this pipe collector non-output signal at this moment.When extraneous signal, tone decoder (4) output (the 8th pin) current potential is reduced to 0V, it is that 0 biasing whistling signal this moment (greater than 0.7V) is just amplified by display switch pipe (5) that the be of display switch pipe (5) forms, amplifying signal is sent into display (11) playback from the collector electrode output of display switch pipe (5) by voice output electric capacity (14), is sent to lamp drive circuit (6) simultaneously.It is intermittently luminous that lamp drive circuit (6) removes to drive optical display unit (12) after in addition rectification is amplified with the whistling signal.Sound display (11) is the electrodynamic type loudspeaker, and optical display unit (12) is an ordinary incandescent lamp.
First amplifier (2), second amplifier (3), beat oscillator (7), tone alternator (9) adopt an integrated four high guaily unit, and model is LM324.Light-sensitive element (1) adopts silicon photocell, and model is 2CR41.Display switch pipe (5) adopts 9014 triodes, and the beat switching tube adopts 9014 triodes.Lamp drive circuit (6) adopts the 3DD15 large power triode.
The contacted system between the cover vehicle has just been formed in this receiver and No. 86205286 supporting uses of patent.After using this system, front truck can clearly be learnt the intention of overtaking other vehicles of the 60 meters vehicles in rear, thereby allows car in advance, and avoiding overtaking other vehicles has an accident.Because this machine Highgrade integration, so it is low to have a cost, good electric property, the advantage that shock resistance is strong is a kind of very practical technical scheme.
Claims (7)
1, a kind of infrared signal receiver of being made up of light-sensitive element (1) operational amplifier (2) (3) sound display (11) optical display unit (12) etc. of overtaking other vehicles is characterized in that receiver has tone decoder (4) circuit; The tone decoder output is connected to switching tube (5); Be connected to beat switching tube (8) in the circuit; Be connected to tone alternator output capacitance (10) in the circuit; Be connected to biasing resistor (13) in the circuit.
2,, it is characterized in that tone decoder (4) adopts the LM567 integrated circuit according to the described receiver of claim 1.
3,, it is characterized in that display switch pipe (5) emitter is connected to tone decoder (4) output, base stage is connected together with tone output capacitance (10) negative pole, biasing resistor (13) upper end according to the described receiver of claim 1.
4,, it is characterized in that beat switching tube (8) collector electrode is connected to the inverting input of tone alternator (9) according to the described receiver of claim 1.
5,, it is characterized in that voice output electric capacity (14) is connected to the collector electrode of display switch pipe (5) according to the described receiver of claim 1.
6,, it is characterized in that first amplifier (2) second amplifier (3) beat oscillator (7) tone alternators (9) adopt integrated four high guaily unit according to the described receiver of claim 1.
7,, it is characterized in that this integrated four high guaily unit adopts the LM324 integrated package according to claim 1 or 6 described receivers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89202221 CN2047864U (en) | 1989-03-06 | 1989-03-06 | Overtaking signal receiver using tone decoder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89202221 CN2047864U (en) | 1989-03-06 | 1989-03-06 | Overtaking signal receiver using tone decoder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2047864U true CN2047864U (en) | 1989-11-15 |
Family
ID=4860002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89202221 Withdrawn CN2047864U (en) | 1989-03-06 | 1989-03-06 | Overtaking signal receiver using tone decoder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2047864U (en) |
-
1989
- 1989-03-06 CN CN 89202221 patent/CN2047864U/en not_active Withdrawn
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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 |