CN202111672U - Marine main engine rotation speed signal generator - Google Patents
Marine main engine rotation speed signal generator Download PDFInfo
- Publication number
- CN202111672U CN202111672U CN2011201905012U CN201120190501U CN202111672U CN 202111672 U CN202111672 U CN 202111672U CN 2011201905012 U CN2011201905012 U CN 2011201905012U CN 201120190501 U CN201120190501 U CN 201120190501U CN 202111672 U CN202111672 U CN 202111672U
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- resistance
- pin
- potentiometer
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Abstract
The utility model discloses a marine main engine rotation speed signal generator, which comprises a power circuit, a frequency adjustable square wave generating circuit, a base wave selecting circuit, a compensation circuit, an output circuit and a display circuit, wherein the power circuit consists of an AC/DC (Alternating Current/Direct Current) switching power supply, a storage battery and a change-over switch; the frequency adjustable square wave generating circuit consists of 555 and a potentiometer; an output end of the frequency adjustable square wave generating circuit is connected with an input end of the base wave selecting circuit; the base wave selecting circuit consists of an inductor and a variable capacitor; an output end of the base wave selecting circuit is connected with an input end of the compensation circuit; the compensation circuit consists of an inductor and a capacitor; the output circuit which consists of a potentiometer and an isolating transformer is connected with an output end of the compensation circuit; a sine wave main engine rotation speed signal of 1-6kHz is output through a secondary side of the isolating transformer; the display circuit consists of a frequency meter, a voltmeter and a tachometer; the frequency meter and the tachometer are connected with the output end of the base wave selecting circuit; and the voltmeter is connected with an adjusting end of an output adjusting potentiometer.
Description
Technical field
The utility model belongs to the electrotechnical, electronic field of instrumentation technology, and especially a kind of inoperative main frame just can be simulated the signal generator that the marine main engine tach signal detects and debugs the host monitor system.
Background technology
The engine speed signal is produced by magnetoelectric tachometric transducer; After the host monitor system breaks down or repairs; Need supervisory control system is detected and debugs, when needs engine speed signal detects and debugs, will start main frame; Not only consumes energy but also easily main frame is caused damage had also increased labour intensity and debugging difficulty simultaneously.
Summary of the invention
The utility model is exactly in order to address the above problem, and a kind of marine main engine rotary speed signal generator is provided, and under the situation of inoperative main frame, the simulation framework tach signal detects and debugs the host monitor system.
The technical solution of the utility model is: a kind of marine main engine rotary speed signal generator is provided, comprises square wave generation circuit, first-harmonic selecting circuit, compensating circuit and the output circuit of power circuit, frequency adjustable.
Said power circuit comprises change over switch K, Switching Power Supply and storage battery, and the end of said change over switch K is connected with Switching Power Supply and storage battery respectively, and the other end is connected with 8 pin with 4 pin of 555 chips.
The square wave generation circuit of said frequency adjustable is one 555 oscillating circuits, by 555 chips, first resistance R
1, second resistance R
2, first capacitor C
1, the first potentiometer W
1, second capacitor C
2Form said first resistance R
1, second resistance R
2, first capacitor C
1And the first potentiometer W
1Series connection successively; 7 pin of said 555 chips are connected in first resistance R
1, second resistance R
2Between, 2 pin and 6 pin are connected in first capacitor C
1, the first potentiometer W
1Between, 5 pin are through second capacitor C
2Ground connection, 1 pin ground connection, 3 pin output square-wave signal.
Said first-harmonic selecting circuit is a filtering gating circuit, by first inductance L
1, variable capacitor C
0And the 3rd resistance R
3Form said first inductance L
1With the 3rd resistance R
3Parallel connection, input is connected with 3 pin of 555 chips, output and variable capacitor C
0Connect variable capacitor C
0Other end ground connection.
Said compensating circuit is by second inductance L
2With the 3rd capacitor C
3Form; Said second inductance L
2One end and first inductance L
1Output connects, the other end and the 3rd capacitor C
3An end connect the 3rd capacitor C
3Other end ground connection.
Said output circuit is by the 4th resistance R
4, the second potentiometer W
2, transformer T forms said the 4th resistance R
4The input and second inductance L
2Output connects, the output and the second potentiometer W
2Input connects; The second potentiometer W
2T is parallelly connected with transformer, output head grounding.
Said display circuit is made up of frequency meter, voltmeter, tachometer, shows output signal frequency, voltage and simulation rotating speed respectively.
Beneficial effect: the marine main engine rotary speed signal generator of the utility model.The square wave generation circuit, first-harmonic selecting circuit, compensating circuit, output circuit, the display circuit that comprise power circuit, frequency adjustable.Said power circuit is made up of AC/DC Switching Power Supply and storage battery and change over switch, and the positive pole of Switching Power Supply and storage battery connects the square wave generation circuit positive power source terminal of frequency adjustable through change over switch; The square wave generation circuit of frequency adjustable is formed with potentiometer by 555, the input of output termination first-harmonic selecting circuit; The first-harmonic selecting circuit is made up of inductance and variable capacitance, the input of output termination compensating circuit; Compensating circuit is made up of inductance and electric capacity; The output circuit of being made up of potentiometer and isolating transformer connects the output of compensating circuit.Sinusoidal wave engine speed signal by the secondary output 1KHZ-6KHZ of isolating transformer; Display circuit is made up of frequency meter, voltmeter, tachometer, and frequency meter, tachometer connect first-harmonic selecting circuit output, and voltmeter connects output regulator potentiometer adjustable side.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model embodiment.
Fig. 2 is the circuit theory diagrams of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
With reference to Fig. 1, the marine main engine rotary speed signal generator of present embodiment.The square wave generation circuit, first-harmonic selecting circuit, compensating circuit, the output circuit that comprise power circuit, frequency adjustable.Said power circuit is made up of AC/DC Switching Power Supply and storage battery and change over switch, and the positive pole of Switching Power Supply and storage battery connects the square wave generation circuit positive power source terminal of frequency adjustable through change over switch; The square wave generation circuit of frequency adjustable is formed with potentiometer by 555, the input of output termination first-harmonic selecting circuit; The first-harmonic selecting circuit is made up of inductance and variable capacitance, the input of output termination compensating circuit; Compensating circuit is made up of inductance and electric capacity; The output circuit of being made up of potentiometer and isolating transformer connects the output of compensating circuit.Sinusoidal wave engine speed signal by the secondary output 1KHZ-6KHZ of isolating transformer; Display circuit is made up of frequency meter, voltmeter, tachometer, and frequency meter, tachometer connect first-harmonic selecting circuit output, and voltmeter connects output regulator potentiometer adjustable side.
Shown in Figure 2: power circuit is through power supply of change over switch K selector switch power supply or storage battery power supply.
The square wave generation circuit of frequency adjustable is one 555 oscillating circuits, by 555, W
1, R
1, R
2, C
1, C
2Form, 555 3 pin output square-wave signal is regulated W
1Can change the frequency of output square-wave signal.
The first-harmonic selecting circuit is a filtering gating circuit, by inductance L
1With variable capacitor C
0And R
3Form, regulate C
0Can select first-harmonic, first-harmonic is sinusoidal wave, and its amplitude need not to amplify greater than the square wave amplitude, can directly use through output circuit output.
Compensating circuit is by L
2And capacitor C
3Form, improve waveform and improve amplitude, the loss of compensation output circuit.
Output circuit is by resistance R
4, potentiometer W
2, transformer T forms, and regulates W
2Can change output voltage, the effect of T is an isolation signals, reduces and disturbs, the output of perception coupling.
Display circuit is made up of frequency meter, voltmeter, tachometer, shows output signal frequency, voltage and simulation rotating speed respectively.
Above content is to combine optimal technical scheme to the further explain that the present invention did, and can not assert that the practical implementation of invention only limits to these explanations.Under the present invention, the those of ordinary skill of technical field, under the prerequisite that does not break away from design of the present invention, simple deduction and replacement can also be made, all protection scope of the present invention should be regarded as.
Claims (1)
1. a marine main engine rotary speed signal generator is characterized in that, said marine main engine rotary speed signal generator comprises square wave generation circuit, first-harmonic selecting circuit, compensating circuit and the output circuit of power circuit, frequency adjustable;
Said power circuit comprises change over switch (K), Switching Power Supply and storage battery, and an end of said change over switch (K) is connected with Switching Power Supply and storage battery respectively, and the other end is connected with 8 pin with 4 pin of 555 chips;
The square wave generation circuit of said frequency adjustable is one 555 oscillating circuits, by 555 chips, the first resistance (R
1), the second resistance (R
2), the first electric capacity (C
1), the first potentiometer (W
1), the second electric capacity (C
2) form the said first resistance (R
1), the second resistance (R
2), the first electric capacity (C
1) and the first potentiometer (W
1) series connection successively; 7 pin of said 555 chips are connected in the first resistance (R
1), the second resistance (R
2) between, 2 pin and 6 pin are connected in the first electric capacity (C
1), the first potentiometer (W
1) between, 5 pin are through the second electric capacity (C
2) ground connection, 1 pin ground connection, 3 pin output square-wave signal;
Said first-harmonic selecting circuit is a filtering gating circuit, by the first inductance (L
1), variable capacitor (C
0) and the 3rd resistance (R
3) form the said first inductance (L
1) and the 3rd resistance (R
3) parallel connection, input is connected with 3 pin of 555 chips, output and variable capacitor (C
0) connect variable capacitor (C
0) other end ground connection;
Said compensating circuit is by the second inductance (L
2) and the 3rd electric capacity (C
3) form; The said second inductance (L
2) end and the first inductance (L
1) the output connection, the other end and the 3rd electric capacity (C
3) an end connect the 3rd electric capacity (C
3) other end ground connection;
Said output circuit is by the 4th resistance (R
4), the second potentiometer (W
2), transformer (T) forms said the 4th resistance (R
4) the input and the second inductance (L
2) the output connection, the output and the second potentiometer (W
2) the input connection; Second potentiometer (the W
2) parallelly connected with transformer (T), output head grounding;
Said display circuit is made up of frequency meter, voltmeter, tachometer, shows output signal frequency, voltage and simulation rotating speed respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201905012U CN202111672U (en) | 2011-06-08 | 2011-06-08 | Marine main engine rotation speed signal generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201905012U CN202111672U (en) | 2011-06-08 | 2011-06-08 | Marine main engine rotation speed signal generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202111672U true CN202111672U (en) | 2012-01-11 |
Family
ID=45437121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201905012U Expired - Fee Related CN202111672U (en) | 2011-06-08 | 2011-06-08 | Marine main engine rotation speed signal generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202111672U (en) |
-
2011
- 2011-06-08 CN CN2011201905012U patent/CN202111672U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20140608 |