CN207529176U - A kind of infrared receiver tube output level automaton - Google Patents
A kind of infrared receiver tube output level automaton Download PDFInfo
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- CN207529176U CN207529176U CN201721555980.7U CN201721555980U CN207529176U CN 207529176 U CN207529176 U CN 207529176U CN 201721555980 U CN201721555980 U CN 201721555980U CN 207529176 U CN207529176 U CN 207529176U
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- resistance
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- amplifying circuit
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Abstract
The utility model provides a kind of infrared receiver tube output level automaton, including infrared induction circuit, amplifying circuit, control circuit and microcontroller, the input port of amplifying circuit is connect with the output terminal of infrared induction circuit, the output terminal of amplifying circuit is connected with microcontroller, and control circuit is connected with amplifying circuit and microcontroller.Control circuit is that the amplification factor of adjustment amplifying circuit is realized by adjusting equivalent resistance by monolithic processor controlled equivalent resistance in an access amplifying circuit.It realizes in the case where no vehicle is by terminal, each racing track is made to correspond to amplifying circuit and export to the infrared induction level of microcontroller and maintains same higher level, when racing track has vehicle to pass through terminal so that microcontroller collects stable step signal, and the timing that final realization vehicle crosses terminal is more accurate.
Description
Technical field
The utility model is related to carriage for children class contest detection technique field more particularly to a kind of infrared receiver tube output electricity
Flat automaton.
Background technology
In Racing carts for children activity, reach the equipment of racing track terminal using infrared external reflection detection target and detected for competing,
Competition field, which is arranged or remove to knock off, to be made all extremely to facilitate.Since the environment residing for transmitting tube, reception pipe and each racing track has difference, i.e., every
The infrared energy of racing track reflection is different, different with the position relationship of corresponding infrared receiver tube, leads to different infrared receiving terminals
The signal strength received is not the same, so that the voltage value that microcontroller receives is inconsistent, then is reached eventually when there is racing car
During point, reflected intensity variation also has certain difference, the time that racing car is reached home is caused to judge inaccurate.
Utility model content
The utility model provides a kind of infrared receiver tube output level automaton, and technical solution is as follows：
A kind of infrared receiver tube output level automaton, including infrared induction circuit, amplifying circuit, control electricity
Road and microcontroller, the input port of amplifying circuit are connect with the output terminal of infrared induction circuit, the output terminal and list of amplifying circuit
Piece machine is connected, and control circuit is connected with amplifying circuit and microcontroller.
Control circuit includes：Electric resistance array and analog switch group, microcontroller is according to the output level for receiving amplifying circuit
The instruction that is turned on or off is sent to analog switch group.Control circuit is by monolithic processor controlled equivalent in an access amplifying circuit
Resistance, microcontroller adjust equivalent resistance according to the output level for receiving amplifying circuit, final to realize to amplifying circuit
The adjustment of amplification factor.
Further, infrared induction circuit includes：Resistance R1, resistance R2, capacitance C1 and infrared receiver tube LED, it is described
Resistance R1 and capacitance C1 are connected between+5V voltages and ground, the infrared receiver tube LED connect with the resistance R2 after with institute
Capacitance C1 parallel connections are stated, the cathode of the infrared receiver tube LED is connected with resistance R1.
Amplifying circuit includes：Operational amplifier U1B, capacitance C2, capacitance C3, capacitance C4, capacitance C5, resistance R3, resistance R4
And one end of resistance R5, capacitance C4 are connected with the anode of infrared receiver tube LED, the same phase of the other end and operational amplifier U1B
Input terminal is connected, and capacitance C3 is in parallel with resistance R2, and the first end of resistance R3 is connected with the in-phase input end of operational amplifier U1B,
Capacitance C2 is serially connected between second end and the ground of resistance R3, and the first end of resistance R4 is connected with the output terminal of operational amplifier U1B,
The second end of resistance R4 is connected with the inverting input of operational amplifier U1B, the first end of resistance R5 and the second end of resistance R3
It is connected, capacitance C5 is serially connected between the second end of resistance R4 and the second end of resistance R5.
The output terminal of operational amplifier is connected with microcontroller.
Further, control circuit using 74HC4066 chips as analog switch group, the 1st, 3, the 8 of 74HC4066 chips
And 10 pin difference series resistor R6, R7, R8 and R9, be connected to the amplification after the other end parallel connection of resistance R6, R7, R8 and R9
The first end of R5 in circuit.
The second end of the R5 of the amplifying circuit is connected to after the pin parallel connection of the 2nd, 4,9 and 11 of 74HC4066 chips.
The pin of the 5th, 6,12 and 13 of the 74HC4066 chips is connected with the microcontroller 4.
Using the technical solution of the utility model, in the case where no vehicle is by terminal, when certain racing track that microcontroller receives
When infrared reflection energy is too low, microcontroller, which adjusts corresponding control circuit, makes its equivalent resistance become larger, and reduces amplifying circuit
Amplification factor, when certain racing track infrared reflection energy that microcontroller receives is excessively high, microcontroller adjusts corresponding control circuit
Its equivalent resistance is made to become smaller, increases the amplification factor of amplifying circuit, is realized in the case where no vehicle is by terminal, matches each item
Road, which corresponds to amplifying circuit and exports to the infrared induction level of microcontroller, to be maintained in same higher level, when racing track has vehicle to pass through end
During point so that microcontroller collects stable step signal, and the timing that final realization vehicle crosses terminal is more accurate.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the block schematic illustration of the utility model；
Fig. 2 is the schematic diagram of the control circuit of the utility model；
Fig. 3 is the partial circuit diagram of the utility model
In attached drawing the label of each component for：1- outer sensor circuit, 2- amplifying circuits, 3- control circuits, 4- microcontrollers, 31-
Electric resistance array, 32- analog switch groups.
Specific embodiment
Purpose, technical scheme and advantage to make the utility model embodiment are clearer, new below in conjunction with this practicality
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, those of ordinary skill in the art's all other embodiments obtained without creative efforts, belongs to
The range of the utility model protection.
As shown in Figure 1, a kind of infrared receiver tube output level automaton, including infrared induction circuit 1, amplification
Circuit 2, control circuit 3 and microcontroller 4, the input port of amplifying circuit 2 are connect with the output terminal of infrared induction circuit 1, amplification
The output terminal of circuit 2 is connected with microcontroller 4, and control circuit 3 is connected with amplifying circuit 2 and microcontroller 4.
As shown in Fig. 2, control circuit 3 includes：Electric resistance array 31 and analog switch group 32, microcontroller 4 are put according to receiving
The output level of big circuit 3 sends the instruction that is turned on or off to analog switch group 32.Control circuit 3 is an access amplifying circuit
In by monolithic processor controlled equivalent resistance, microcontroller 4 equivalent resistance is adjusted according to the output level for receiving amplifying circuit 2
Value, the final adjustment realized to the amplification factor of amplifying circuit 2.
Using the technical solution of the utility model, in the case where no vehicle is by terminal, when certain racing track that microcontroller receives
When infrared reflection energy is too low, microcontroller, which adjusts corresponding control circuit, makes its equivalent resistance become larger, and reduces amplifying circuit
Amplification factor, when certain racing track infrared reflection energy that microcontroller receives is excessively high, microcontroller adjusts corresponding control circuit
Its equivalent resistance is made to become smaller, increases the amplification factor of amplifying circuit, is realized in the case where no vehicle is by terminal, matches each item
Road, which corresponds to amplifying circuit and exports to the infrared induction level of microcontroller, to be maintained in same higher level, when racing track has vehicle to pass through end
During point so that microcontroller collects stable step signal, and the timing that final realization vehicle crosses terminal is more accurate.
Further, as shown in figure 3, infrared induction circuit 1 includes：Resistance R1, resistance R2, capacitance C1 and infrared receiver
Pipe LED, the resistance R1 and capacitance C1 are connected between+5V voltages and ground, the infrared receiver tube LED and resistance R2
In parallel with the capacitance C1 after series connection, the cathode of the infrared receiver tube LED is connected with resistance R1.
The amplifying circuit 2 includes：Operational amplifier U1B, capacitance C2, capacitance C3, capacitance C4, capacitance C5, resistance R3, electricity
R4 and resistance R5 is hindered, one end of capacitance C4 is connected with the anode of infrared receiver tube LED, and the other end is with operational amplifier U1B's
In-phase input end is connected, and capacitance C3 is in parallel with resistance R2, the first end of resistance R3 and the in-phase input end phase of operational amplifier U1B
Even, capacitance C2 is serially connected between second end and the ground of resistance R3, the first end of resistance R4 and the output terminal phase of operational amplifier U1B
Even, the second end of resistance R4 is connected with the inverting input of operational amplifier U1B, the first end of resistance R5 and the second of resistance R3
End is connected, and capacitance C5 is serially connected between the second end of resistance R4 and the second end of resistance R5.
The output terminal of operational amplifier is connected (not shown) with microcontroller 4.
By having electric current to pass through on R2 after infrared receiver tube sensing infrared external reflection line, infrared external reflection line is stronger, and electric current is got over
Greatly, the voltage value carried on R2 is bigger, which exports after amplifying circuit amplifies again to microcontroller, amplification factor by R4 electricity
The ratio of resistance value and R5 both ends resistance value determines.
Further, control circuit 3 using 74HC4066 chips as analog switch group, 74HC4066 chips the 1st, 3,
8 and 10 pins distinguish series resistor R6, R7, R8 and R9, and described put is connected to after the other end parallel connection of resistance R6, R7, R8 and R9
The first end of R5 in big circuit 2.
The second end of R5 in the amplifying circuit 2 is connected to after the pin parallel connection of the 2nd, 4,9 and 11 of 74HC4066 chips.
The pin of the 5th, 6,12 and 13 of the 74HC4066 chips is connected (not shown) with the microcontroller 4.
Microcontroller according to the height of operational amplifier output terminal level to adjust the 5th, 6,12, the level of 13 pins, control
Between 1st pin of 74HC4066 chips and the 2nd pin, between the 3rd pin and the 4th pin, between the 8th pin and the 9th pin,
It is on-off between 10th pin and the 11st pin, realizes the adjustment of the resistance R5 both ends parallel resistance of amplifying circuit 2, finally reach
To the purpose of the amplification factor of control amplifying circuit.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacement, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (3)
1. a kind of infrared receiver tube output level automaton, which is characterized in that including infrared induction circuit (1), put
Big circuit (2), control circuit (3) and microcontroller (4), input port and the infrared induction circuit of the amplifying circuit (2)
(1) output terminal connection, the output terminal of the amplifying circuit (2) is connected with the microcontroller (4), the control circuit (3) and
The amplifying circuit (2) and the microcontroller (4) are connected；
The control circuit (3) includes：Electric resistance array (31) and analog switch group (32), the electric resistance array (31) is including multiple
Resistance in parallel, the analog switch group (32) include the analog switch of multiple parallel connections, each electricity of the electric resistance array (31)
Resistance is connected with an analog switch of the analog switch group (32), and microcontroller (4) basis receives the amplifying circuit
(2) output level sends the instruction that is turned on or off to analog switch group (32).
2. a kind of infrared receiver tube output level automaton according to claim 1, which is characterized in that described
Infrared induction circuit (1) includes：Resistance R1, resistance R2, capacitance C1 and infrared receiver tube LED, the resistance R1 and capacitance C1
It being connected between+5V voltages and ground, the infrared receiver tube LED is in parallel with the capacitance C1 after connecting with the resistance R2,
The cathode of the infrared receiver tube LED is connected with the resistance R1；
The amplifying circuit (2) includes：Operational amplifier U1B, capacitance C2, capacitance C3, capacitance C4, capacitance C5, resistance R3, resistance
R4 and resistance R5, one end of the capacitance C4 are connected with the anode of the infrared receiver tube LED, and the other end is put with the operation
The in-phase input end of big device U1B is connected, and the capacitance C3 is in parallel with the resistance R2, first end and the fortune of the resistance R3
The in-phase input end for calculating amplifier U1B is connected, and the capacitance C2 is serially connected between second end and the ground of the resistance R3, the electricity
The first end of resistance R4 is connected with the output terminal of the operational amplifier U1B, second end and the operation amplifier of the resistance R4
The inverting input of device U1B is connected, and the first end of the resistance R5 is connected with the second end of the resistance R3, the capacitance C5 strings
It is connected between the second end of the resistance R4 and the second end of the resistance R5；
The output terminal of the operational amplifier is connected with the microcontroller (4).
3. a kind of infrared receiver tube output level automaton according to claim 2, which is characterized in that described
Control circuit (3) using 74HC4066 chips as analog switch group, the electric resistance array (31) including resistance R6, R7, R8 and
R9, the pins of the 1st, 3,8 and 10 of the 74HC4066 chips meet described resistance R6, R7, R8 and R9 respectively, the resistance R6, R7,
The first end of resistance R5 in the amplifying circuit (2) is connected to after the other end parallel connection of R8 and R9；
Of resistance R5 in the amplifying circuit (2) is connected to after the pin parallel connection of the 2nd, 4,9 and 11 of the 74HC4066 chips
Two ends；
The pin of the 5th, 6,12 and 13 of the 74HC4066 chips is connected with the microcontroller (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721555980.7U CN207529176U (en) | 2017-11-20 | 2017-11-20 | A kind of infrared receiver tube output level automaton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721555980.7U CN207529176U (en) | 2017-11-20 | 2017-11-20 | A kind of infrared receiver tube output level automaton |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207529176U true CN207529176U (en) | 2018-06-22 |
Family
ID=62583397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721555980.7U Active CN207529176U (en) | 2017-11-20 | 2017-11-20 | A kind of infrared receiver tube output level automaton |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207529176U (en) |
-
2017
- 2017-11-20 CN CN201721555980.7U patent/CN207529176U/en active Active
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