CN103441754B - A kind of gear selection circuit - Google Patents
A kind of gear selection circuit Download PDFInfo
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- CN103441754B CN103441754B CN201310384575.3A CN201310384575A CN103441754B CN 103441754 B CN103441754 B CN 103441754B CN 201310384575 A CN201310384575 A CN 201310384575A CN 103441754 B CN103441754 B CN 103441754B
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Abstract
The invention discloses a kind of gear selection circuit, this circuit, by arranging and door and audion, utilizes and realizes gear control with door according to signal, realizes two paths of signals input by pure hardware circuit, the gear selection circuit of four kinds of pattern outputs, reduces complexity and the production cost of product.
Description
Technical field
The present invention relates to circuit engineering field, particularly relate to a kind of gear selection circuit.
Background technology
Existing gear selection circuit needs software control, and product is complex comparatively speaking, relatively costly.
Summary of the invention
The present invention proposes one and realizes two paths of signals input by pure hardware circuit, the gear selection circuit of four kinds of pattern outputs.
For realizing foregoing circuit, the present invention by the following technical solutions:
A kind of gear selection circuit, including: with door U6, resistance R2, resistance R25, resistance R22, resistance R19, resistance R35, resistance R18, resistance R20, resistance R10, resistance R29, resistance R21, resistance R14, resistance R15, diode D1, diode D3, diode D7, audion Q1, audion Q2, audion Q3, audion Q12, three state buffer U5, electric capacity BC3; Described pin 1 with door U6 and pin 2 are respectively connected to signal SIGA and signal SIGB, pin 3 is connected with the positive pole of diode D3, the negative pole of diode D3 is connected with the pin 12 of door U6, pin 13, it is connected with one end of resistance R2 with the pin 11 of door U6, the other end of resistance R2 is connected with the base stage of audion Q1, the emitter stage of audion Q1 meets power supply VCC, colelctor electrode is connected with one end of resistance R15, the other end of resistance R15 is connected with the positive pole of diode D7, the negative pole of diode D7 is connected with one end of resistance R29, the other end ground connection of resistance R29; The negative pole of diode D1 is connected with the negative pole of diode D7, and positive pole is connected with one end of resistance R14, and the other end of resistance R14 is connected with the colelctor electrode of audion Q1; One end of resistance R21 is connected with the positive pole of diode D1, other end ground connection; The grounded emitter of audion Q2, colelctor electrode is connected with the positive pole of diode D1, base stage is connected with one end of resistance R9, the other end of resistance R9 is connected with one end of resistance R10, the other end of resistance R10 is connected with the base stage of audion Q3, audion Q3 grounded collector, emitter stage is connected with the positive pole of diode D7; The negative pole of one end ground connection of resistance R25, the other end and diode D3 is connected; The pin 4 of three state buffer U5 is connected with one end of one end of described resistance R10, resistance R20 respectively, the other end of resistance R20 and being connected with the pin 8 of door U6, all meets signal SIGA with the pin 9 of door U6 and pin 10; Pin 3 ground connection of three state buffer U5, pin 2 connects sensor signal, and pin 5 connects+5V voltage, one end ground connection of electric capacity BC3, and another terminates+5V voltage; The pin 1 of three state buffer U5 is connected with the colelctor electrode of audion Q12, the grounded emitter of audion Q12, and base stage is connected with one end of resistance R18, the other end of resistance R18 and being connected with the pin 6 of door U6, all meets signal SIGB with the pin 4 of door U6 and pin 5;The colelctor electrode of the homogeneous termination audion Q12 of resistance R19 and resistance R35, another terminates+5V voltage; Resistance R22 one end ground connection, the other end is connected with the emitter stage of audion Q3.
The beneficial effects of the present invention is: realize two paths of signals input by pure hardware circuit, the gear selection circuit of four kinds of pattern outputs, reduce complexity and the production cost of product.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of a kind of gear selection circuit of the present invention;
Fig. 2 is input signal input corresponding to gear relation table;
Fig. 3 is the element truth table of three state buffer U5.
Detailed description of the invention
Technical scheme is further illustrated below in conjunction with accompanying drawing and by detailed description of the invention.
Fig. 1 is the circuit theory diagrams of a kind of gear selection circuit of the present invention.
As shown in Figure 1, a kind of gear selection circuit, including: with door U6, resistance R2, resistance R25, resistance R22, resistance R19, resistance R35, resistance R18, resistance R20, resistance R10, resistance R29, resistance R21, resistance R14, resistance R15, diode D1, diode D3, diode D7, audion Q1, audion Q2, audion Q3, audion Q12, three state buffer U5, electric capacity BC3; Described pin 1 with door U6 and pin 2 are respectively connected to signal SIGA and signal SIGB, pin 3 is connected with the positive pole of diode D3, the negative pole of diode D3 is connected with the pin 12 of door U6, pin 13, it is connected with one end of resistance R2 with the pin 11 of door U6, the other end of resistance R2 is connected with the base stage of audion Q1, the emitter stage of audion Q1 meets power supply VCC, colelctor electrode is connected with one end of resistance R15, the other end of resistance R15 is connected with the positive pole of diode D7, the negative pole of diode D7 is connected with one end of resistance R29, the other end ground connection of resistance R29; The negative pole of diode D1 is connected with the negative pole of diode D7, and positive pole is connected with one end of resistance R14, and the other end of resistance R14 is connected with the colelctor electrode of audion Q1; One end of resistance R21 is connected with the positive pole of diode D1, other end ground connection; The grounded emitter of audion Q2, colelctor electrode is connected with the positive pole of diode D1, base stage is connected with one end of resistance R9, the other end of resistance R9 is connected with one end of resistance R10, the other end of resistance R10 is connected with the base stage of audion Q3, audion Q3 grounded collector, emitter stage is connected with the positive pole of diode D7; The negative pole of one end ground connection of resistance R25, the other end and diode D3 is connected; The pin 4 of three state buffer U5 is connected with one end of one end of described resistance R10, resistance R20 respectively, the other end of resistance R20 and being connected with the pin 8 of door U6, all meets signal SIGA with the pin 9 of door U6 and pin 10; Pin 3 ground connection of three state buffer U5, pin 2 connects sensor signal, and pin 5 connects+5V voltage, one end ground connection of electric capacity BC3, and another terminates+5V voltage; The pin 1 of three state buffer U5 is connected with the colelctor electrode of audion Q12, the grounded emitter of audion Q12, and base stage is connected with one end of resistance R18, the other end of resistance R18 and being connected with the pin 6 of door U6, all meets signal SIGB with the pin 4 of door U6 and pin 5; The colelctor electrode of the homogeneous termination audion Q12 of resistance R19 and resistance R35, another terminates+5V voltage; Resistance R22 one end ground connection, the other end is connected with the emitter stage of audion Q3.
Fig. 2 is input signal input corresponding to gear relation table, and Fig. 3 is the element truth table of three state buffer U5, and elaborating circuit diagram operation principle is presented herein below.
When selecting high tap position, SIGA and SIGB be low level, such as schematic diagram, with the 1 of door U6,2 feet be electronegative potential, then 3 feet are also electronegative potential, and causing 12,13 feet is electronegative potential, make Q1 turn on to power for late-class circuit thus 11 feet are electronegative potential. The electronegative potential of 1 foot of U6 makes 9,10 feet be electronegative potential, thus 8 feet are electronegative potential. Simultaneously the 4 of U6,5 feet be electronegative potential, make Q12 end thus 6 feet are electronegative potential, U51 foot is high potential, and 4 feet are that high impedance does not affect late-class circuit. Now Q2 cut-off, Q3 turns on, then having UEQ3 is electronegative potential, and D7 ends; UCQ2 high potential, is flowed through D1 conducting output high voltage by the voltage of R14 and R21 dividing potential drop and makes system be in high-regime operation work.
When selecting low-grade location, SIGA is high level (+5V), and SIGB is low level, such as schematic diagram, being high potential with 1 foot of door U6,2 feet are electronegative potential, then 3 feet are also electronegative potential, and causing 12,13 feet is electronegative potential, make Q1 conducting power for late-class circuit thus 11 feet are electronegative potential. The high potential of U61 foot makes 9,10 feet be high potential, thus 8 feet are high potential. The electronegative potential of U64,5 feet, makes Q12 end thus 6 feet are electronegative potential simultaneously, and U51 foot is high potential, and 4 feet are that high impedance does not affect late-class circuit. Now Q3 cut-off, Q2 turns on, then have UCQ2 electronegative potential, and D1 ends; UEQ3 is high potential, the voltage of R15 and R22 dividing potential drop flow through D7 conducting, and because R15, R22 dividing point voltage is much smaller than R14, R21 dividing point voltage, therefore output low voltage makes system be in low-regime work.
When selecting automatic transmission position, SIGA is low level, SIGB high level (+5V), such as schematic diagram, being electronegative potential with 1 foot of door U6,2 feet are high potential, then 3 feet are also electronegative potential, and causing 12,13 feet is electronegative potential, make Q1 conducting power for late-class circuit thus 11 feet are electronegative potential. The electronegative potential of U61 foot makes 9,10 feet be electronegative potential, thus 8 feet are electronegative potential. The high potential of U64,5 feet, makes Q12 turn on thus 6 feet are high potential simultaneously, and U51 foot is electronegative potential, and 4 foot output voltages and 2 feet are identical. Signal Sensor outside system is directly connected to U52 foot (owing to this signal can be high level or low level two states), so that U54 foot output high potential or electronegative potential. This voltage determines conducting and the cut-off of Q2 and Q3, thus automatically selecting top grade and low grade.
When selecting to close gear, SIGA and SIGB is high level (+5V), such as schematic diagram, with the 1 of door U6,2 feet be all high potential, then 3 feet are also high potential, and causing 12,13 feet is high potential, make Q1 end thus 11 feet are high potential, cut off late-class circuit and power. Due to not power supply, whole system does not work, and is closed.
The above; being only the present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, any people being familiar with this technology is in the technical scope that disclosed herein; the change that can readily occur in or replacement, all should be encompassed within protection scope of the present invention. Therefore, protection scope of the present invention should be as the criterion with scope of the claims.
Claims (1)
1. a gear selection circuit, it is characterized in that, including: with door U6, resistance R2, resistance R25, resistance R22, resistance R19, resistance R35, resistance R18, resistance R20, resistance R10, resistance R29, resistance R21, resistance R14, resistance R15, diode D1, diode D3, diode D7, audion Q1, audion Q2, audion Q3, audion Q12, three state buffer U5, electric capacity BC3;Described pin 1 with door U6 and pin 2 are respectively connected to signal SIGA and signal SIGB, pin 3 is connected with the positive pole of diode D3, the negative pole of diode D3 is connected with the pin 12 of door U6, pin 13, it is connected with one end of resistance R2 with the pin 11 of door U6, the other end of resistance R2 is connected with the base stage of audion Q1, the emitter stage of audion Q1 meets power supply VCC, colelctor electrode is connected with one end of resistance R15, the other end of resistance R15 is connected with the positive pole of diode D7, the negative pole of diode D7 is connected with one end of resistance R29, the other end ground connection of resistance R29; The negative pole of diode D1 is connected with the negative pole of diode D7, and positive pole is connected with one end of resistance R14, and the other end of resistance R14 is connected with the colelctor electrode of audion Q1; One end of resistance R21 is connected with the positive pole of diode D1, other end ground connection; The grounded emitter of audion Q2, colelctor electrode is connected with the positive pole of diode D1, base stage is connected with one end of resistance R9, the other end of resistance R9 is connected with one end of resistance R10, the other end of resistance R10 is connected with the base stage of audion Q3, audion Q3 grounded collector, emitter stage is connected with the positive pole of diode D7; The negative pole of one end ground connection of resistance R25, the other end and diode D3 is connected; The pin 4 of three state buffer U5 is connected with one end of one end of described resistance R10, resistance R20 respectively, the other end of resistance R20 and being connected with the pin 8 of door U6, all meets signal SIGA with the pin 9 of door U6 and pin 10; Pin 3 ground connection of three state buffer U5, pin 2 connects sensor signal, and pin 5 connects+5V voltage, one end ground connection of electric capacity BC3, and another terminates+5V voltage; The pin 1 of three state buffer U5 is connected with the colelctor electrode of audion Q12, the grounded emitter of audion Q12, and base stage is connected with one end of resistance R18, the other end of resistance R18 and being connected with the pin 6 of door U6, all meets signal SIGB with the pin 4 of door U6 and pin 5; The colelctor electrode of the homogeneous termination audion Q12 of resistance R19 and resistance R35, another terminates+5V voltage; Resistance R22 one end ground connection, the other end is connected with the emitter stage of audion Q3.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310384575.3A CN103441754B (en) | 2013-08-29 | 2013-08-29 | A kind of gear selection circuit |
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| CN201310384575.3A CN103441754B (en) | 2013-08-29 | 2013-08-29 | A kind of gear selection circuit |
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| CN103441754A CN103441754A (en) | 2013-12-11 |
| CN103441754B true CN103441754B (en) | 2016-06-15 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101257278A (en) * | 2008-04-03 | 2008-09-03 | 浙江三木实业有限公司 | Automatic gear shifting system of paper chipper |
| CN202118223U (en) * | 2011-05-09 | 2012-01-18 | 杭州集思机电控制技术有限公司 | Gear selector used in engineering gearbox |
| CN202158173U (en) * | 2011-04-29 | 2012-03-07 | 杭州前进齿轮箱集团股份有限公司 | Photoelectric type gear selector |
| CN203457130U (en) * | 2013-08-29 | 2014-02-26 | 福尔斯通电子(昆山)有限公司 | Gear selection circuit |
-
2013
- 2013-08-29 CN CN201310384575.3A patent/CN103441754B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101257278A (en) * | 2008-04-03 | 2008-09-03 | 浙江三木实业有限公司 | Automatic gear shifting system of paper chipper |
| CN202158173U (en) * | 2011-04-29 | 2012-03-07 | 杭州前进齿轮箱集团股份有限公司 | Photoelectric type gear selector |
| CN202118223U (en) * | 2011-05-09 | 2012-01-18 | 杭州集思机电控制技术有限公司 | Gear selector used in engineering gearbox |
| CN203457130U (en) * | 2013-08-29 | 2014-02-26 | 福尔斯通电子(昆山)有限公司 | Gear selection circuit |
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| CN103441754A (en) | 2013-12-11 |
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