CN105301496A - Motor test system for testing automatic adjustment of rotating speed - Google Patents
Motor test system for testing automatic adjustment of rotating speed Download PDFInfo
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- CN105301496A CN105301496A CN201510818794.7A CN201510818794A CN105301496A CN 105301496 A CN105301496 A CN 105301496A CN 201510818794 A CN201510818794 A CN 201510818794A CN 105301496 A CN105301496 A CN 105301496A
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- triode
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- rotating speed
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Abstract
The invention discloses a motor test system for testing automatic adjustment of rotating speed. The motor test system is characterized by comprising a single-chip microcomputer, a rotating speed signal acquisition unit, a variable frequency motor control unit, an output display unit and an operating unit that are connected to the single-chip microcomputer, a to-be-tested motor connected to the rotating speed signal acquisition unit, a variable frequency motor connected to the to-be-tested motor, and a power supply connected to the variable frequency motor, wherein the variable frequency motor is also connected to the variable frequency motor control unit. The motor test system can quickly adjust the rotating speed of a to-be-tested motor during a test to test parameters of the to-be-tested motor at different rotating speeds, so the motor test efficiency is improved. A rotating speed sensor adopted by the system is high in sensitivity and can immediately acquire real-time rotating signals of a to-be-tested motor, so a test result is prevented from being affected by signal delays.
Description
Technical field
The present invention relates to a kind of Motor Measuring System, specifically refer to the self-adjusting Motor Measuring System of a kind of test rotating speed.
Background technology
Along with national economy and scientific and technical development, the effect that motor plays in all trades and professions is more and more important.Meanwhile, along with the development of every profession and trade, propose more and more higher requirement to motor product, therefore motor product all needs to verify whether its characteristic reaches application requirement by some pilot projects before dispatching from the factory.Motor Measuring Technology has considerable meaning for the performance verification of motor.But traditional Motor Measuring System needs the rotating speed that manually can only be adjusted tested motor during the parameter under testing of electric motors different rotating speeds by tester, this have impact on testing efficiency to a great extent.
Summary of the invention
The object of the invention is to overcome the inefficient defect of existing Motor Measuring System, provide a kind of test rotating speed self-adjusting Motor Measuring System.
Object of the present invention is achieved through the following technical solutions: the self-adjusting Motor Measuring System of a kind of test rotating speed, by single-chip microcomputer, the tach signal collecting unit be connected with single-chip microcomputer respectively, variable-frequency motor control module, output display unit and operating unit, be connected with tach signal collecting unit by measured motor, the variable-frequency motor be connected with by measured motor, and the power supply be connected with variable-frequency motor forms; Described variable-frequency motor is also connected with variable-frequency motor control module.
Further, described tach signal collecting unit by being arranged on by the speed probe in the rotating shaft of measured motor, the Acquisition Circuit be connected with speed probe, and the constant-current source circuit be connected with Acquisition Circuit forms; Described Acquisition Circuit is also connected with single-chip microcomputer.
Described Acquisition Circuit is by triode VT1, amplifier P1, positive pole is ground connection after voltage stabilizing diode D2, the electric capacity C1 of minus earth, P pole is connected with the output terminal of speed probe, N pole is then in turn through diode D1 that resistance R2 is connected with the negative pole of electric capacity C1 after resistance R3, one end is connected with the base stage of triode VT1, the resistance R1 that the other end is then connected with the P pole of diode D1, be serially connected in the resistance R7 between the positive pole of amplifier P1 and output terminal, and forward end is connected with the output terminal of amplifier P1, the polarity-inverting amplifier P2 that backward end then forms the output terminal of this tach signal collecting unit forms, while the base stage of described triode VT1 is connected with the positive pole of electric capacity C1, its emitter is then connected with the positive pole of amplifier P1, ground connection, its collector are then connected with the negative pole of amplifier P1, the output terminal of described tach signal collecting unit is connected with single-chip microcomputer.
Described constant-current source circuit by triode VT2, triode VT3, and the resistance R4 that one end is connected with the base stage of triode VT2, the other end is then connected with the emitter of triode VT2 after resistance R6 through resistance R5 in turn forms; The base stage of described triode VT2 is connected with the collector of triode VT3, its collector is then connected with the negative pole of amplifier P1, its emitter is then connected with the emitter of triode VT3; The base stage of described triode VT3 is then connected with the tie point of resistance R3 with resistance R2; The tie point of described resistance R4 and resistance R5 connects 5V voltage.
Described triode VT1, triode VT2 and triode VT3 all adopt NPN type triode.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) the present invention can adjust by the rotating speed of measured motor fast in test process, to test by the parameter of measured motor under different rotating speeds, improves the efficiency of electromechanical testing.
(2) speed probe of the present invention is highly sensitive, can collect the very first time by the real-time rotate speed signal of measured motor, avoid signal to incur loss through delay and bring impact to test result.
Accompanying drawing explanation
Fig. 1 is one-piece construction block diagram of the present invention.
Fig. 2 is the circuit structure diagram of tach signal collecting unit of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As shown in Figure 1, the present invention tests the self-adjusting Motor Measuring System of rotating speed, by single-chip microcomputer, the tach signal collecting unit be connected with single-chip microcomputer, variable-frequency motor control module, output display unit and operating unit, be connected with tach signal collecting unit by measured motor, the variable-frequency motor be connected with by measured motor, and the power supply be connected with variable-frequency motor forms.Described variable-frequency motor is also connected with variable-frequency motor control module.
Wherein, power supply is used for providing working power to variable-frequency motor and by measured motor, and variable-frequency motor is then for driving tested electric machine rotation.The instruction of variable-frequency motor control module then for sending according to single-chip microcomputer controls variable-frequency motor, controls by the rotating speed of measured motor to reach.Tach signal collecting unit is then for gathering by the real-time rotate speed signal of measured motor.Output display unit is used for showing intuitively by the real-time rotate speed of measured motor, and tester can assess by the performance of measured motor according to by the real-time rotate speed of measured motor, and this output display unit can adopt traditional display to realize.Operating unit is as human-computer exchange window, and tester can by it to single-chip microcomputer input control parameter.Single-chip microcomputer is then as control center of the present invention, it is analyzed for the controling parameters inputted tester, and sending steering order to variable-frequency motor control module, its tach signal that can also collect tach signal collecting unit is analyzed and exports to output display unit simultaneously.
As shown in Figure 2, it is by speed probe for the structure of this tach signal collecting unit, the Acquisition Circuit be connected with speed probe, and the constant-current source circuit be connected with Acquisition Circuit forms.
Described Acquisition Circuit is by triode VT1, and amplifier P1, resistance R1, resistance R2, resistance R3, resistance R7, polarity-inverting amplifier P2, electric capacity C1, diode D1 and voltage stabilizing diode D2 form.Constant-current source circuit is then by triode VT2, and triode VT3, resistance R4, resistance R5 and resistance R6 form.
Wherein, one end of resistance R4 is connected with the base stage of triode VT2, its other end is then connected with the emitter of triode VT2 after resistance R6 through resistance R5 in turn.The base stage of described triode VT2 is connected with the collector of triode VT3, its collector is then connected with the negative pole of amplifier P1, its emitter is then connected with the emitter of triode VT3.The tie point of described resistance R4 and resistance R5 connects 5V voltage, provides operating voltage for giving tach signal collecting unit.
In addition, positive pole ground connection, its minus earth after voltage stabilizing diode D2 of electric capacity C1, the P pole of diode D1 is connected with the output terminal of speed probe, its N pole is then connected with the negative pole of electric capacity C1 after resistance R3 through resistance R2 in turn, and the base stage of described triode VT3 is then connected with the tie point of resistance R3 with resistance R2.One end of resistance R1 is connected with the base stage of triode VT1, its other end is then connected with the P pole of diode D1, between the positive pole that resistance R7 is then serially connected in amplifier P1 and output terminal, the output terminal that the forward end of polarity-inverting amplifier P2 is connected with the output terminal of amplifier P1, its backward end then forms this tach signal collecting unit.While the base stage of described triode VT1 is connected with the positive pole of electric capacity C1, its emitter is then connected with the positive pole of amplifier P1, ground connection, its collector are then connected with the negative pole of amplifier P1.The output terminal of described tach signal collecting unit is connected with single-chip microcomputer.In order to reach better implementation result, the RS-3102 type piezoelectric sensor for measuring rotational speed that this speed probe preferentially adopts Beijing Tuo Puruisheng observation and control technology company limited to produce realizes.Described triode VT1, triode VT2 and triode VT3 then all preferentially adopt NPN type triode to realize.
As mentioned above, just well the present invention can be implemented.
Claims (5)
1. the self-adjusting Motor Measuring System of test rotating speed, it is characterized in that: by single-chip microcomputer, the tach signal collecting unit be connected with single-chip microcomputer respectively, variable-frequency motor control module, output display unit and operating unit, be connected with tach signal collecting unit by measured motor, the variable-frequency motor be connected with by measured motor, and the power supply be connected with variable-frequency motor forms; Described variable-frequency motor is also connected with variable-frequency motor control module.
2. the self-adjusting Motor Measuring System of one test rotating speed according to claim 1, it is characterized in that: described tach signal collecting unit is by being arranged on by the speed probe in the rotating shaft of measured motor, the Acquisition Circuit be connected with speed probe, and the constant-current source circuit be connected with Acquisition Circuit forms; Described Acquisition Circuit is also connected with single-chip microcomputer.
3. the self-adjusting Motor Measuring System of one test rotating speed according to claim 2, it is characterized in that: described Acquisition Circuit is by triode VT1, amplifier P1, positive pole is ground connection after voltage stabilizing diode D2, the electric capacity C1 of minus earth, P pole is connected with the output terminal of speed probe, N pole is then in turn through diode D1 that resistance R2 is connected with the negative pole of electric capacity C1 after resistance R3, one end is connected with the base stage of triode VT1, the resistance R1 that the other end is then connected with the P pole of diode D1, be serially connected in the resistance R7 between the positive pole of amplifier P1 and output terminal, and forward end is connected with the output terminal of amplifier P1, the polarity-inverting amplifier P2 that backward end then forms the output terminal of this tach signal collecting unit forms, while the base stage of described triode VT1 is connected with the positive pole of electric capacity C1, its emitter is then connected with the positive pole of amplifier P1, ground connection, its collector are then connected with the negative pole of amplifier P1, the output terminal of described tach signal collecting unit is connected with single-chip microcomputer.
4. the self-adjusting Motor Measuring System of one test rotating speed according to claim 3, it is characterized in that: described constant-current source circuit is by triode VT2, triode VT3, and the resistance R4 that one end is connected with the base stage of triode VT2, the other end is then connected with the emitter of triode VT2 after resistance R6 through resistance R5 in turn forms; The base stage of described triode VT2 is connected with the collector of triode VT3, its collector is then connected with the negative pole of amplifier P1, its emitter is then connected with the emitter of triode VT3; The base stage of described triode VT3 is then connected with the tie point of resistance R3 with resistance R2; The tie point of described resistance R4 and resistance R5 connects 5V voltage.
5. the self-adjusting Motor Measuring System of one test rotating speed according to claim 4, is characterized in that: described triode VT1, triode VT2 and triode VT3 all adopt NPN type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510818794.7A CN105301496A (en) | 2015-11-21 | 2015-11-21 | Motor test system for testing automatic adjustment of rotating speed |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510818794.7A CN105301496A (en) | 2015-11-21 | 2015-11-21 | Motor test system for testing automatic adjustment of rotating speed |
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| CN105301496A true CN105301496A (en) | 2016-02-03 |
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| CN201510818794.7A Withdrawn CN105301496A (en) | 2015-11-21 | 2015-11-21 | Motor test system for testing automatic adjustment of rotating speed |
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| CN2418490Y (en) * | 2000-03-15 | 2001-02-07 | 武汉铁路分局武昌车辆段 | Device for automatically detecting preformance of generator |
| US20060022679A1 (en) * | 2004-07-28 | 2006-02-02 | Kouji Obata | Apparatus for partial discharge detection of turn to turn insulation in motor |
| CN200953042Y (en) * | 2006-10-09 | 2007-09-26 | 上海燃料电池汽车动力系统有限公司 | Driving electric machine for fuel battery vehicle and control system test platform |
| CN101441250A (en) * | 2007-11-22 | 2009-05-27 | 上海华普发动机有限公司 | Electric generator detection system and apparatus |
| CN202362433U (en) * | 2011-12-02 | 2012-08-01 | 成都飞亚航空设备应用研究所有限公司 | Checking equipment for generator control box |
| CN102706564A (en) * | 2012-06-21 | 2012-10-03 | 株洲中达特科电子科技有限公司 | Motor test system and control method for electric vehicle |
| CN204347216U (en) * | 2014-12-29 | 2015-05-20 | 无锡新大力电机有限公司 | A kind of multifunction electric apparatus test device |
| CN104779890A (en) * | 2015-03-30 | 2015-07-15 | 成都颉隆科技有限公司 | Energy-saving type motor control system based on accurate control of motor rotating speed |
| CN104792539A (en) * | 2015-04-13 | 2015-07-22 | 成都诚邦动力测试仪器有限公司 | Engine oil consumption testing system based on signal biased amplifying |
-
2015
- 2015-11-21 CN CN201510818794.7A patent/CN105301496A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2418490Y (en) * | 2000-03-15 | 2001-02-07 | 武汉铁路分局武昌车辆段 | Device for automatically detecting preformance of generator |
| US20060022679A1 (en) * | 2004-07-28 | 2006-02-02 | Kouji Obata | Apparatus for partial discharge detection of turn to turn insulation in motor |
| CN200953042Y (en) * | 2006-10-09 | 2007-09-26 | 上海燃料电池汽车动力系统有限公司 | Driving electric machine for fuel battery vehicle and control system test platform |
| CN101441250A (en) * | 2007-11-22 | 2009-05-27 | 上海华普发动机有限公司 | Electric generator detection system and apparatus |
| CN202362433U (en) * | 2011-12-02 | 2012-08-01 | 成都飞亚航空设备应用研究所有限公司 | Checking equipment for generator control box |
| CN102706564A (en) * | 2012-06-21 | 2012-10-03 | 株洲中达特科电子科技有限公司 | Motor test system and control method for electric vehicle |
| CN204347216U (en) * | 2014-12-29 | 2015-05-20 | 无锡新大力电机有限公司 | A kind of multifunction electric apparatus test device |
| CN104779890A (en) * | 2015-03-30 | 2015-07-15 | 成都颉隆科技有限公司 | Energy-saving type motor control system based on accurate control of motor rotating speed |
| CN104792539A (en) * | 2015-04-13 | 2015-07-22 | 成都诚邦动力测试仪器有限公司 | Engine oil consumption testing system based on signal biased amplifying |
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Application publication date: 20160203 |