CN211602414U - Universal detection system for speed control device - Google Patents
Universal detection system for speed control device Download PDFInfo
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- CN211602414U CN211602414U CN202020269016.3U CN202020269016U CN211602414U CN 211602414 U CN211602414 U CN 211602414U CN 202020269016 U CN202020269016 U CN 202020269016U CN 211602414 U CN211602414 U CN 211602414U
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Abstract
The utility model relates to a general detecting system of speed control device belongs to power electronic technology field, including LCD touch-sensitive screen, ARM control panel and single chip microcomputer control board, LCD touch-sensitive screen and ARM control panel signal connection, the ARM control panel with the help of RS232 communication cable and single chip microcomputer control board, single chip microcomputer control board include controller, communication circuit and for the power supply circuit of controller and communication circuit power supply, single chip microcomputer control board still include switching signal output unit, general adaptation interface, rotational speed signal conditioning unit, signal acquisition conditioning unit and driver analog unit, need not operate on the engine, have convenient characteristics.
Description
Technical Field
The utility model belongs to the technical field of power electronics, a detecting system is related to, specifically be the general detecting system of speed control device.
Background
The generator work piece environment is probably relatively poor, like diesel generator, the rotational speed is unstable, leads to output voltage unstable, can influence the normal work with electrical apparatus, causes danger even to the generator is provided with speed control device, and the rotor rotational speed that can control the generator is stable.
At present, the detection method for the speed control device of the diesel engine is to directly detect on a generator, artificially raise or lower the rotation speed of the generator and observe whether the speed control device can adjust and stabilize the rotation speed of the generator.
Disclosure of Invention
The utility model discloses a solve above-mentioned problem, designed the general detecting system of speed control device, do not need the generator, have the characteristics of convenient noiselessness.
The utility model discloses a concrete technical scheme is:
general detecting system of speed control device, including LCD touch-sensitive screen, ARM control panel and singlechip control panel, LCD touch-sensitive screen and ARM control panel signal connection, the ARM control panel with the help of RS232 communication cable and singlechip control panel, the singlechip control panel include controller, communication circuit and for the power supply circuit of controller and communication circuit power supply, the key point is: the singlechip control panel also comprises a switch signal output unit, a universal adapter interface, a rotating speed signal conditioning unit, a signal acquisition conditioning unit and a driver simulation unit,
the control end of the controller is connected with the input end of the switch signal output unit, the output ends of the power circuit and the switch signal output unit are connected with the tested electronic speed regulator module through a universal adapting interface,
the input end of the rotating speed signal conditioning unit is connected with the controller, the output end of the rotating speed signal conditioning unit is connected with the input end of the tested electronic speed regulator module,
the output end of the tested electronic speed regulation module is connected with the input end of the driver simulation unit,
the output end of the driver simulation unit is connected with the output end of the signal acquisition and conditioning unit, and the output end of the signal acquisition and conditioning unit is connected with the signal input end of the controller.
The universal adapting interface is a socket CON 15.
The switch signal output unit comprises an idle speed control switch and a speed fine adjustment control switch.
The idle speed control switch comprises a resistor R28, a triode Q4 and a relay K2;
the controller P2.6 interface is connected in series with the base of the triode Q4 through a resistor R28, the emitter of the triode Q4 is grounded, the collector of the triode Q4 is connected with the negative electrode of the relay K2, the positive electrode of the relay K2 is connected with a 12V voltage source, and the switch of the relay K2 is arranged between the 12 interface and the 13 interface of the socket CON 15.
The speed fine adjustment control switch comprises a resistor R26, a resistor R27, a triode Q3 and a relay K1;
the controller P2.7 interface is connected with the base electrode of a triode Q3 in series through a resistor R27, the emitting electrode of the triode Q3 is grounded, the collecting electrode of the triode Q3 is connected with the negative electrode of a relay K1, the positive electrode of the relay K1 is connected with a 12V voltage source, the 14 interface and the 15 interface of the socket CON15 are connected in series through a resistor R26, and the switch of the relay K1 is connected with a resistor R26 in parallel.
The rotational speed signal conditioning unit comprises a resistor R69, a triode Q6 and a transformer T1, wherein the base electrode of the triode Q6 is connected with a P2.2 pin of the controller through a resistor R96, the emitter electrode of the triode Q6 is grounded, the collector electrode of the triode Q6 is connected with a 5V power supply through the primary side of the transformer T1, the secondary side of the transformer T1 is connected with a 1 interface and a 2 interface of a socket CON15, the primary side and the secondary side of the transformer T1 are respectively connected with a capacitor C32 and a capacitor C33 in parallel, and a resistor R68 is connected in series between the capacitor C33 and the negative electrode of the secondary side of the transformer T1.
The driver simulation unit comprises a resistor R24, and the resistor R24 is connected in series between the 5 interface and the 6 interface of the socket CON 15.
The signal acquisition conditioning unit comprises a resistor R23, a resistor R25 and a voltage regulator tube D5;
the series point of the 5 interfaces of the resistors R24 and CON15 is grounded in series with the resistor R23 and the resistor R25, the voltage stabilizing tube D5 is connected with the resistor R25 in parallel, and the anode of the voltage stabilizing tube D5 is grounded.
The utility model has the advantages that: the detection personnel select the model of the power station and the electronic speed regulator to be detected through the LCD touch screen, and the connection between the device to be detected and the detection system is realized through the special wiring channel and the universal adapting interface according to the screen prompt. The detection system stimulates the electronic speed regulator to work by simulating the excitation and control signals of the rotating speed, the speed fine adjustment, the idling speed and the like of the engine. The detection system automatically changes the frequency of the output rotating speed signal by collecting the driving voltage output by the electronic speed regulator, so that the closed-loop excitation of the electronic speed regulator is realized, and the detector can also simulate control signals of engine speed fine adjustment, idling and the like. The detection personnel can observe the change of the driving output voltage of the electronic speed regulator while the detection system outputs the control signal, and judge whether the electronic speed regulator works normally.
Drawings
Fig. 1 is a block diagram of the present invention.
Fig. 2 is a circuit diagram of the switching signal output unit, the signal collecting and conditioning unit, and the driver simulation unit of the present invention.
Fig. 3 is a circuit diagram of the rotation speed signal conditioning unit of the present invention.
Fig. 4 is a flow chart of the present invention.
In the attached drawing, 2-1 parts of an idle speed control switch, 2-2 parts of a speed fine adjustment control switch, 2-3 parts of a driver simulation unit, 2-4 parts of a signal acquisition and conditioning unit.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the following embodiments and accompanying drawings.
In a specific embodiment, as shown in fig. 1 of the specification, the general detection system for the speed control device comprises an LCD touch screen, an ARM control panel and a single chip microcomputer control panel, wherein the LCD touch screen is in signal connection with the ARM control panel, the ARM control panel is in signal connection with the single chip microcomputer control panel by means of an RS232 communication cable, the single chip microcomputer control panel comprises a controller, a communication circuit and a power circuit for supplying power to the controller and the communication circuit, and the general detection system is characterized in that: the singlechip control panel also comprises a switch signal output unit, a universal adapter interface, a rotating speed signal conditioning unit, a signal acquisition conditioning unit 2-4 and a driver simulation unit 2-3,
the measured speed controller is in the utility model discloses in practical be electronic governor.
The control end of the controller is connected with the input end of the switch signal output unit, the output ends of the power circuit and the switch signal output unit are connected with the tested electronic speed regulator module through a universal adapting interface,
the input end of the rotating speed signal conditioning unit is connected with the controller, the output end of the rotating speed signal conditioning unit is connected with the input end of the tested electronic speed regulator module,
the output end of the tested electronic speed regulation module is connected with the input end of the driver simulation unit 2-3,
the output end of the driver simulation unit 2-3 is connected with the output end of the signal acquisition and conditioning unit 2-4, and the output end of the signal acquisition and conditioning unit 2-4 is connected with the signal input end of the controller.
The detection personnel select the model of the power station and the electronic speed regulator to be detected through the LCD touch screen, and the connection between the device to be detected and the detection system is realized through the special wiring channel and the universal adapting interface according to the screen prompt. The detection system stimulates the electronic speed regulator to work by simulating the excitation and control signals of the rotating speed, the speed fine adjustment, the idling speed and the like of the engine. The detection system automatically changes the frequency of the output rotating speed signal by collecting the driving voltage output by the electronic speed regulator, so that the closed-loop excitation of the electronic speed regulator is realized, and the detector can also simulate control signals of engine speed fine adjustment, idling and the like. The detection personnel can observe the change of the driving output voltage of the electronic speed regulator while the detection system outputs the control signal, and judge whether the electronic speed regulator works normally.
As shown in fig. 2, the switching signal output unit includes an idle speed control switch 2-1 and a speed fine-tuning control switch 2-2.
The idle speed switch can control whether the idle speed mode of the generator is started or not, and the speed fine adjustment control switch 2-2 can control the adjustment of the speed of the generator to a certain degree.
The universal adapter interface is a connection socket CON15, and the idle speed control switch 2-1 comprises a resistor R28, a triode Q4 and a relay K2;
the controller P2.6 interface is connected in series with the base of the triode Q4 through a resistor R28, the emitter of the triode Q4 is grounded, the collector of the triode Q4 is connected with the negative electrode of the relay K2, the positive electrode of the relay K2 is connected with a 12V voltage source, and the switch of the relay K2 is arranged between the 12 interface and the 13 interface of the socket CON 15.
When the controller outputs a high level through a P2.6 pin, the triode Q4 is conducted, the relay K2 controls the switch to disconnect the idle speed circuit and the idle speed mode, and the idle speed mode is closed; when the controller outputs a low level through the P2.6 pin, the triode Q4 is cut off, the relay K2 controls the switch to close the idle circuit connection, and the idle mode is opened.
As shown in fig. 2 of the specification, the speed fine-tuning control switch 2-2 comprises a resistor R26, a resistor R27, a transistor Q3 and a relay K1;
the controller P2.7 interface is connected with the base electrode of a triode Q3 in series through a resistor R27, the emitting electrode of the triode Q3 is grounded, the collecting electrode of the triode Q3 is connected with the negative electrode of a relay K1, the positive electrode of the relay K1 is connected with a 12V voltage source, the 14 interface and the 15 interface of the socket CON15 are connected in series through a resistor R26, and the switch of the relay K1 is connected with a resistor R26 in parallel.
When the controller outputs a high level through a P2.7 pin, the triode Q3 is conducted, the relay K1 controls the switch to be switched off, and a 14 port and a 15 port of the socket CON15 are switched on through the resistor R26, which is equivalent to the speed reduction of the generator; when the controller outputs a low level through the pin P2.7, the triode Q3 is cut off, the relay K1 controls the switch to be closed, and the 14 port and the 15 port of the socket CON15 are short-circuited, which is equivalent to the speed of the generator is increased.
As shown in fig. 3 of the specification, the rotational speed signal conditioning unit includes a resistor R69, a transistor Q6, and a transformer T1, a base of the transistor Q6 is connected to a P2.2 pin of the controller through a resistor R96, an emitter of the transistor Q6 is grounded, a collector of the transistor Q6 is connected to a 5V power supply through a primary side of the transformer T1, a secondary side of the transformer T1 is connected to a 1 interface and a 2 interface of a socket CON15, a primary side and a secondary side of the transformer T1 are respectively connected in parallel to a capacitor C32 and a capacitor C33, and a negative electrode of the capacitor C33 and a secondary side of the transformer T1 are connected in series to a resistor R68.
In the traditional detection method, a Hall sensor is arranged at the position of a rotating wheel of a generator and corresponds to a concave structure on the rotating wheel of the generator, and the Hall sensor transmits a counting signal to an electronic speed regulator to be detected. In the detection system, after the controller simulates a frequency signal, the frequency signal is output to the rotating speed signal conditioning unit through a P2.2 pin, the signal is divided into partial voltage to the base electrode of a triode Q6 through a resistor R69, and the triode Q6 works in a saturation region and a cut-off region. The output of the triode Q6 is regulated to the voltage range identified by the electronic speed regulator through a transformer and is transmitted to the electronic speed regulator, and the capacitor C32 and the capacitor C33 can play a role in filtering.
As shown in fig. 2, the driver simulation unit includes a resistor R24, and the resistor R24 is connected in series between the 5 interface and the 6 interface of the socket CON 15.
The resistor R24 is used to simulate the resistance of the excitation coil.
The signal acquisition conditioning unit 2-4 comprises a resistor R23, a resistor R25 and a voltage regulator tube D5;
the series point of the 5 interfaces of the resistors R24 and CON15 is grounded in series with the resistor R23 and the resistor R25, the voltage stabilizing tube D5 is connected with the resistor R25 in parallel, and the anode of the voltage stabilizing tube D5 is grounded.
The output signal of the electronic speed regulator to be tested is regulated by the driver analog unit and then is input into the P3.5 pin of the controller through the signal acquisition and conditioning units 2-4, the resistor R23 and the resistor R25 play a role in voltage division, and the voltage regulator tube D5 plays a role in voltage regulation.
As shown in fig. 4 in the specification, the work flow of the detection system is as follows:
the detection system firstly carries out power-on safety detection and mainly judges whether the power supply voltage is normal or not so as to increase the reliability of the system. When the power supply does not exist, the system gives a prompt.
And secondly, carrying out open loop test by the detection system, namely, carrying out linear change on the analog rotating speed signal from low to high and from high to low by the test system, and acquiring the change of the driving voltage of the tested electronic speed regulator. If the driving voltage is not changed, the electronic governor is indicated to be tested to be in fault.
And then the test system carries out closed-loop test, namely the test system simulates the output starting rotating speed of the engine, and the electronic speed regulator to be tested automatically changes the magnitude of the driving voltage by acquiring a simulated rotating speed signal. The detection system automatically changes the output analog rotating speed signal according to the collected driving voltage of the electronic speed regulator, thereby realizing the closed-loop test of the electronic speed regulator. If the analog rotating speed signal controlled by the electronic speed regulator can be stable, the closed-loop control function of the electronic speed regulator is normal.
Thirdly, the test system automatically inputs speed fine adjustment and idle speed control signals, and simultaneously collects the change of the simulation rotating speed signal, thereby judging whether the speed fine adjustment and idle speed control functions of the electronic speed regulator are normal.
And finally, testing the driving voltage waveform to obtain the waveform of the driving voltage output by the electronic speed regulator, thereby enhancing the knowledge of the electronic speed regulator to be tested.
If the electronic speed regulator has faults, the system is provided with a comprehensive protection function for testing safety. If the electronic speed regulator is judged to be in fault at any link of the test, the test is ended, and a test result is given.
Claims (8)
1. General detecting system of speed control device, including LCD touch-sensitive screen, ARM control panel and singlechip control panel, LCD touch-sensitive screen and ARM control panel signal connection, the ARM control panel with the help of RS232 communication cable and singlechip control panel, the singlechip control panel include controller, communication circuit and for the power supply circuit of controller and communication circuit power supply, its characterized in that: the singlechip control panel also comprises a switch signal output unit, a general adapter interface, a rotating speed signal conditioning unit, a signal acquisition conditioning unit (2-4) and a driver simulation unit (2-3),
the control end of the controller is connected with the input end of the switch signal output unit, the output ends of the power circuit and the switch signal output unit are connected with the tested electronic speed regulator module through a universal adapting interface,
the input end of the rotating speed signal conditioning unit is connected with the controller, the output end of the rotating speed signal conditioning unit is connected with the input end of the tested electronic speed regulator module,
the output end of the tested electronic speed regulation module is connected with the input end of the driver simulation unit (2-3),
the output end of the driver simulation unit (2-3) is connected with the output end of the signal acquisition and conditioning unit (2-4), and the output end of the signal acquisition and conditioning unit (2-4) is connected with the signal input end of the controller.
2. The universal detection system for speed control devices of claim 1, wherein: the universal adapting interface is a socket CON 15.
3. The universal detection system for speed control devices of claim 2, wherein: the switch signal output unit comprises an idle speed control switch (2-1) and a speed fine adjustment control switch (2-2).
4. The universal detection system for speed control devices of claim 3, wherein: the idle speed control switch (2-1) comprises a resistor R28, a triode Q4 and a relay K2;
the controller P2.6 interface is connected in series with the base of the triode Q4 through a resistor R28, the emitter of the triode Q4 is grounded, the collector of the triode Q4 is connected with the negative electrode of the relay K2, the positive electrode of the relay K2 is connected with a 12V voltage source, and the switch of the relay K2 is arranged between the 12 interface and the 13 interface of the socket CON 15.
5. The universal detection system for speed control devices of claim 3, wherein: the speed fine adjustment control switch (2-2) comprises a resistor R26, a resistor R27, a triode Q3 and a relay K1;
the controller P2.7 interface is connected with the base electrode of a triode Q3 in series through a resistor R27, the emitting electrode of the triode Q3 is grounded, the collecting electrode of the triode Q3 is connected with the negative electrode of a relay K1, the positive electrode of the relay K1 is connected with a 12V voltage source, the 14 interface and the 15 interface of the socket CON15 are connected in series through a resistor R26, and the switch of the relay K1 is connected with a resistor R26 in parallel.
6. The universal detection system for speed control devices of claim 2, wherein: the rotational speed signal conditioning unit comprises a resistor R69, a triode Q6 and a transformer T1, wherein the base electrode of the triode Q6 is connected with a P2.2 pin of the controller through a resistor R96, the emitter electrode of the triode Q6 is grounded, the collector electrode of the triode Q6 is connected with a 5V power supply through the primary side of the transformer T1, the secondary side of the transformer T1 is connected with a 1 interface and a 2 interface of a socket CON15, the primary side and the secondary side of the transformer T1 are respectively connected with a capacitor C32 and a capacitor C33 in parallel, and a resistor R68 is connected in series between the capacitor C33 and the negative electrode of the secondary side of the transformer T1.
7. The universal detection system for speed control devices of claim 2, wherein: the driver simulation unit (2-3) comprises a resistor R24, and the resistor R24 is connected between the 5 interface and the 6 interface of the socket CON15 in series.
8. The universal detection system for speed control devices of claim 7, wherein: the signal acquisition conditioning unit (2-4) comprises a resistor R23, a resistor R25 and a voltage regulator tube D5;
the series point of the 5 interfaces of the resistors R24 and CON15 is grounded in series with the resistor R23 and the resistor R25, the voltage stabilizing tube D5 is connected with the resistor R25 in parallel, and the anode of the voltage stabilizing tube D5 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020269016.3U CN211602414U (en) | 2020-03-07 | 2020-03-07 | Universal detection system for speed control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020269016.3U CN211602414U (en) | 2020-03-07 | 2020-03-07 | Universal detection system for speed control device |
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| Publication Number | Publication Date |
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| CN211602414U true CN211602414U (en) | 2020-09-29 |
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| CN202020269016.3U Active CN211602414U (en) | 2020-03-07 | 2020-03-07 | Universal detection system for speed control device |
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| CN (1) | CN211602414U (en) |
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- 2020-03-07 CN CN202020269016.3U patent/CN211602414U/en active Active
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