CN210894408U - Locomotive component testing device - Google Patents
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- CN210894408U CN210894408U CN201922128048.1U CN201922128048U CN210894408U CN 210894408 U CN210894408 U CN 210894408U CN 201922128048 U CN201922128048 U CN 201922128048U CN 210894408 U CN210894408 U CN 210894408U
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Abstract
The utility model discloses a locomotive component testing device, which comprises a control module, a signal output module and a signal detection module; the control module comprises a control signal output terminal and a detection signal receiving terminal, the signal output module comprises a control signal receiving terminal and a test signal output terminal, and the signal detection module comprises a feedback signal receiving terminal and a detection signal output terminal; the control signal output terminal is electrically connected with the control signal receiving terminal, the test signal output terminal is electrically connected with the signal input end of the locomotive component to be tested, the feedback signal receiving terminal is electrically connected with the signal output end of the locomotive component to be tested, and the detection signal output terminal is electrically connected with the detection signal receiving terminal; the locomotive component to be tested comprises at least one of a speed sensor, a speed measuring motor, a digital-to-analog conversion box and a speed display instrument which are arranged on the locomotive. The utility model provides a locomotive part testing arrangement has improved maintenance efficiency.
Description
Technical Field
The embodiment of the utility model provides a relate to test technical field, especially relate to a locomotive part testing arrangement.
Background
With the development of railway construction in China, the number of locomotives used is increased sharply, and the real-time detection of the speed of the locomotives plays a crucial role. Therefore, in the running process of the locomotive, the speed of the locomotive, the rotating speed of the motor and the like need to be detected and displayed in real time, the speed detection modes and detection parts of different types of locomotives can be different, and the same locomotive overhaul unit needs to undertake different types of locomotive overhaul. The detection of the existing locomotive speed sensor, digital module box, speed measuring motor and speedometer is mostly carried out by using different detection equipment, the workload is large, the detection time is long, and the requirements of industrialization and automation detection are difficult to meet.
SUMMERY OF THE UTILITY MODEL
The utility model provides a locomotive part testing arrangement to improve maintenance efficiency.
The embodiment of the utility model provides a locomotive part testing arrangement, including control module, signal output module and signal detection module; the control module comprises a control signal output terminal and a detection signal receiving terminal, the signal output module comprises a control signal receiving terminal and a test signal output terminal, and the signal detection module comprises a feedback signal receiving terminal and a detection signal output terminal;
the control signal output terminal is electrically connected with the control signal receiving terminal, the test signal output terminal is electrically connected with a signal input end of a locomotive component to be tested, the feedback signal receiving terminal is electrically connected with a signal output end of the locomotive component to be tested, and the detection signal output terminal is electrically connected with the detection signal receiving terminal;
the locomotive component to be tested comprises at least one of a speed sensor, a speed measuring motor, a digital-to-analog conversion box and a speed display instrument which are arranged on the locomotive.
Optionally, the locomotive component testing device provided by the embodiment of the present invention further includes a driving module, wherein the driving module includes a pulse test signal receiving terminal;
the signal output module comprises a pulse signal generating unit; the pulse signal generating unit comprises a first control signal receiving terminal and a pulse test signal output terminal, the control signal output terminal comprises a first control signal output terminal, and the first control signal receiving terminal is electrically connected with the first control signal output terminal; the pulse test signal output terminal is electrically connected with the pulse test signal receiving terminal;
the driving module is connected with the locomotive component to be tested.
Optionally, the signal detection module includes a direct current voltage detection unit and a pulse signal detection unit; the locomotive component to be tested comprises a speed sensor;
the direct-current voltage detection unit comprises a first feedback signal receiving terminal and a direct-current voltage detection signal output terminal; the pulse signal detection unit comprises a second feedback signal receiving terminal and a pulse detection signal output terminal; the detection signal receiving terminal also comprises a direct-current voltage detection signal receiving terminal and a pulse detection signal receiving terminal; the first feedback signal receiving terminal and the second feedback signal receiving terminal are electrically connected with a signal output end of the speed sensor, the direct-current voltage detection signal output terminal is electrically connected with the direct-current voltage detection signal receiving terminal, and the pulse detection signal output terminal is electrically connected with the pulse detection signal receiving terminal.
Optionally, the signal detection module includes an alternating voltage detection unit; the locomotive component to be tested comprises a speed measuring motor;
the alternating voltage detection unit comprises a third feedback signal receiving terminal and an alternating voltage detection signal output terminal, the control signal receiving terminal further comprises an alternating voltage detection signal receiving terminal, the third feedback signal receiving terminal is electrically connected with a signal output end of the speed measuring motor, and the alternating voltage detection signal output terminal is electrically connected with the alternating voltage detection signal receiving terminal.
Optionally, the driving module includes a servo motor driver and a servo motor;
the servo motor driver is electrically connected with the servo motor, and the servo motor is connected with the locomotive component to be tested.
Optionally, the signal output module includes a pulse signal generating unit; the locomotive component to be tested comprises a digital-to-analog conversion box;
the pulse signal generating unit comprises a first control signal receiving terminal and a pulse test signal output terminal, the control signal output terminal comprises a first control signal output terminal, and the first control signal receiving terminal is electrically connected with the first control signal output terminal; the pulse test signal output terminal is electrically connected with the signal input end of the digital-to-analog conversion box;
the signal detection module comprises a direct current detection unit, the direct current detection unit comprises a fourth feedback signal receiving terminal and a direct current detection signal output terminal, the detection signal receiving terminal further comprises a direct current detection signal receiving terminal, the fourth feedback signal receiving terminal is electrically connected with the signal output end of the digital-to-analog conversion box, and the direct current detection signal output terminal is electrically connected with the direct current detection signal receiving terminal.
Optionally, the signal output module includes a current signal generating unit; the locomotive component to be tested comprises a speed display instrument;
the current signal generating unit comprises a second control signal receiving terminal and a current test signal output terminal, the control signal output terminal comprises a second control signal output terminal, and the second control signal receiving terminal is electrically connected with the second control signal output terminal; and the current test signal output terminal is electrically connected with the signal input end of the speed display instrument.
Optionally, the control module comprises an industrial personal computer and an intelligent control unit;
the industrial computer includes test command output terminal and measurement signal receiving terminal, intelligent control unit includes test command receiving terminal and measurement signal output terminal, test command output terminal with test command receiving terminal electricity is connected, measurement signal receiving terminal with measurement signal output terminal electricity is connected.
Optionally, the intelligent control unit includes an analog-to-digital converter; the analog-to-digital converter is electrically connected with the detection signal output terminal.
The embodiment of the utility model provides a locomotive part testing arrangement is applicable to locomotive parts such as speedtransmitter, the tacho motor, digital analog conversion box and speed display instrument and overhauls and the capability test work, according to the locomotive part of difference, the different test signal of control module control signal output module output, signal detection module detects the signal of the locomotive part output that awaits measuring to with detecting signal transmission to control module handle and show, thereby accomplish the capability test to different locomotive parts respectively. The embodiment of the utility model provides a locomotive part testing arrangement adopts the modularized design, accords with industrial production's requirement, simple structure, convenient to use, furthest's reduction operating personnel's intensity of labour, improved the maintenance efficiency of locomotive.
Drawings
Fig. 1 is a schematic structural diagram of a testing apparatus for locomotive components according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of another testing apparatus for testing locomotive components according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another testing apparatus for testing locomotive components according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another testing apparatus for testing locomotive components according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another testing apparatus for testing locomotive components according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another testing device for locomotive components according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another testing apparatus for testing locomotive components according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 1 is the embodiment of the present invention provides a structural schematic diagram of a locomotive component testing device, as shown in fig. 1, the embodiment of the present invention provides a locomotive component testing device including a control module 11, a signal output module 12 and a signal detection module 13. The control module 11 includes a control signal output terminal 21 and a detection signal receiving terminal 22, the signal output module 12 includes a control signal receiving terminal 31 and a test signal output terminal 32, and the signal detection module 13 includes a feedback signal receiving terminal 41 and a detection signal output terminal 42. The control signal output terminal 21 is electrically connected to the control signal receiving terminal 31, the test signal output terminal 32 is electrically connected to the signal input terminal 51 of the locomotive component 14 to be tested, the feedback signal receiving terminal 41 is electrically connected to the signal output terminal 52 of the locomotive component 14 to be tested, and the detection signal output terminal 42 is electrically connected to the detection signal receiving terminal 22. The locomotive component 14 to be tested comprises at least one of a speed sensor, a speed measuring motor, a digital-to-analog conversion box and a speed display instrument which are arranged on the locomotive.
Specifically, as shown in fig. 1, the control module 11 is electrically connected to the signal output module 12, the control module 11 is configured to output a control signal to the signal output module 12, and the signal output module 12 outputs a test signal to the locomotive component 14 to be tested according to the control signal. The signal detection module 13 is electrically connected to the signal output end 52 of the locomotive component 14 to be tested, and the signal detection module 13 detects the signal output by the locomotive component 14 to be tested and transmits the detection signal to the control module 11 for processing and displaying, thereby completing the test of the locomotive component 14 to be tested.
The embodiment of the utility model provides a locomotive part testing arrangement, be applicable to locomotive parts such as speedtransmitter, the tacho motor, digital-analog conversion box and speed display instrument overhauls and the capability test work, according to the locomotive part of difference, control module 11 control signal output module 12 exports different test signal, signal detection module 13 detects the signal of the 14 outputs of locomotive part that awaits measuring, and will detect signal transmission and handle and show to control module 11, thereby accomplish the capability test to different locomotive parts respectively. The embodiment of the utility model provides a locomotive part testing arrangement adopts the modularized design, accords with industrial production's requirement, simple structure, convenient to use, furthest's reduction operating personnel's intensity of labour, improved the maintenance efficiency of locomotive.
Fig. 2 is a schematic structural diagram of another locomotive component testing device provided by the embodiment of the present invention, as shown in fig. 2, optionally, the locomotive component testing device provided by the embodiment of the present invention further includes a driving module 15, and the driving module 15 includes a pulse test signal receiving terminal 61. The signal output module 12 includes a pulse signal generating unit 121, the pulse signal generating unit 121 includes a first control signal receiving terminal 311 and a pulse test signal output terminal 321, the control signal output terminal 21 includes a first control signal output terminal 211, the first control signal receiving terminal 311 is electrically connected to the first control signal output terminal 211, the pulse test signal output terminal 321 is electrically connected to the pulse test signal receiving terminal 61, the driving module 15 is connected to the locomotive component 14 to be tested, and the driving module 15 is configured to drive the locomotive component 14 to be tested to rotate.
The control module 11 sends a first control signal to the pulse signal generating unit 121, the pulse signal generating unit 121 sends a pulse test signal to the driving module 15 according to the first control signal, the driving module 15 is controlled to rotate, and the driving module 15 drives the locomotive component 14 to be tested to rotate, so that the test on the locomotive component 14 to be tested is completed. Illustratively, the control module 11 sets a simulated locomotive speed, the control module 11 sends a first control signal to the pulse signal generating unit 121 according to the set simulated locomotive speed, so as to control the pulse signal generating unit 121 to send a pulse test signal with a frequency corresponding to the simulated locomotive speed to the driving module 15, the driving module 15 receives the pulse test signal with the frequency corresponding to the simulated locomotive speed, and rotates according to the simulated locomotive speed, so as to drive the locomotive component 14 to be tested to rotate, the locomotive component 14 to be tested tests the current rotating speed, and compares the rotating speed tested by the locomotive component 14 to be tested with the simulated locomotive speed, so as to complete the performance test of the locomotive component 14 to be tested. The embodiment of the utility model provides a locomotive part testing arrangement, through the actual operating condition of 15 simulation locomotives of drive module, accomplish the capability test of locomotive part 14 that awaits measuring, simulation locomotive speed stability, system operation safe and reliable.
With continued reference to fig. 2, optionally, the signal detection module 13 includes a dc voltage detection unit 131 and a pulse signal detection unit 132, and the locomotive component 14 to be tested includes a speed sensor; the dc voltage detection unit 131 includes a first feedback signal receiving terminal 411 and a dc voltage detection signal output terminal 421, the pulse signal detection unit 132 includes a second feedback signal receiving terminal 412 and a pulse detection signal output terminal 422, the detection signal receiving terminal 22 further includes a dc voltage detection signal receiving terminal 221 and a pulse detection signal receiving terminal 222, the first feedback signal receiving terminal 411 and the second feedback signal receiving terminal 412 are both electrically connected to a signal output end 521 of the speed sensor, the dc voltage detection signal output terminal 421 is electrically connected to the dc voltage detection signal receiving terminal 221, the pulse detection signal output terminal 422 is electrically connected to the pulse detection signal receiving terminal 222, and the control module 11 is configured to obtain a first detection result of the speed sensor according to the dc voltage detection signal and the pulse detection signal.
Illustratively, as shown in fig. 2, the locomotive component 14 to be tested is a speed sensor, a simulated locomotive speed is set by the control module 11, the control module 11 sends a first control signal to the pulse signal generating unit 121 according to the set simulated locomotive speed, thereby controlling the pulse signal generating unit 121 to send a pulse test signal with a frequency corresponding to the simulated locomotive speed to the driving module 15, the driving module 15 receives the pulse test signal with the frequency corresponding to the simulated locomotive speed and rotates according to the simulated locomotive speed, thereby driving the speed sensor to rotate, the speed sensor outputs a speed measurement signal according to the rotation speed, the direct current voltage detecting unit 131 converts the speed measurement signal into a direct current voltage detection signal and sends the direct current voltage detection signal to the control module 11, the pulse signal detecting unit 132 converts the speed measurement signal into a pulse detection signal, and sends the pulse detection signal to the control module 11, and the control module 11 obtains the first detection result of the speed sensor according to the direct-current voltage detection signal and the pulse detection signal, and determines the performance of the speed sensor.
Optionally, the first detection result includes one or more of a high level amplitude, a low level amplitude, a duty ratio, a phase difference, and a number of pulses per revolution.
Wherein, the DC voltage detecting unit 131 converts the speed measurement signal into a DC voltage detection signal, and transmits the dc voltage detection signal to the control module 11, the pulse signal detection unit 132 converts the tacho signal into a pulse detection signal, and sends the pulse detection signal to the control module 11, the control module 11 calculates the high level amplitude and the low level amplitude of the speed measurement signal according to the direct current voltage detection signal, the control module 11 obtains the duty ratio, the phase difference and the pulse number per revolution of the speed measurement signal according to the pulse detection signal, observes whether the high level amplitude, the low level amplitude, the duty ratio, the phase difference and the pulse number per revolution meet the requirement of the speed measurement signal output by the speed sensor, for example, to see if the high level amplitude and the low level amplitude of the tacho signal are within the required ranges, and whether the high level amplitude and the low level amplitude are stable or not, so that the performance test of the speed sensor is completed.
Fig. 3 is a schematic structural diagram of another locomotive component testing device provided in an embodiment of the present invention, as shown in fig. 3, optionally, the signal detection module 13 includes an ac voltage detection unit 133, and the locomotive component 14 to be tested includes a speed measurement motor. The ac voltage detecting unit 133 includes a third feedback signal receiving terminal 413 and an ac voltage detecting signal output terminal 423, the control signal receiving terminal 31 further includes an ac voltage detecting signal receiving terminal 223, the third feedback signal receiving terminal 413 is electrically connected to a signal output terminal 522 of the tachometer motor, the ac voltage detecting signal output terminal 423 is electrically connected to the ac voltage detecting signal receiving terminal 223, and the control module 11 is configured to obtain a second detection result of the tachometer motor according to the ac voltage detecting signal.
Illustratively, as shown in fig. 3, the locomotive component 14 to be tested is a tachometer motor, a simulated locomotive speed is set by the control module 11, the control module 11 sends a first control signal to the pulse signal generating unit 121 according to the set simulated locomotive speed, so as to control the pulse signal generating unit 121 to send a pulse test signal with a frequency corresponding to the simulated locomotive speed to the driving module 15, the driving module 15 receives the pulse test signal with the frequency corresponding to the simulated locomotive speed and rotates according to the simulated locomotive speed, so as to drive the tachometer motor to rotate, the tachometer motor outputs an ac voltage tachometer signal according to the rotating speed, the ac voltage detecting unit 133 converts the ac voltage tachometer signal into an ac voltage detection signal and sends the ac voltage detection signal to the control module 11, the control module 11 obtains a second detection result of the tachometer motor according to the ac voltage detection signal, the second detection result comprises the level amplitude of the alternating voltage speed measurement signal and can also comprise the speed measured by the speed measurement motor obtained by calculating the level amplitude, and the speed measured by the speed measurement motor is compared with the set speed of the simulated locomotive to finish the performance test of the speed measurement motor.
With continued reference to fig. 2 and 3, optionally, the drive module 15 includes a servo motor driver 151 and a servo motor 152. The servo motor driver 151 is electrically connected with the servo motor 152 and used for controlling the servo motor 152 to rotate, and the servo motor 152 is connected with the locomotive component 14 to be tested and used for driving the locomotive component 14 to be tested to rotate.
Specifically, the control module 11 sets a simulated locomotive speed, the control module 11 sends a first control signal to the pulse signal generating unit 121 according to the set simulated locomotive speed, so as to control the pulse signal generating unit 121 to send a pulse test signal with a frequency corresponding to the simulated locomotive speed to the servo motor driver 15, the servo motor driver 151 receives the pulse test signal with the frequency corresponding to the simulated locomotive speed, and drives the servo motor 152 to rotate according to the simulated locomotive speed, and the servo motor 152 drives the locomotive component 14 to be tested to rotate. The servo motor driver 151 is a controller for controlling the servo motor 152, and can control the servo motor 152 by three modes, i.e., position, speed and torque, thereby realizing high-precision positioning of the transmission system. The servo motor 152 can control the speed and position accuracy accurately, the rotor speed is controlled by the signal output from the servo motor driver 151 to the servo motor 152, the response can be made quickly, the servo motor has the characteristics of small electromechanical time constant, high linearity and the like, and the received electric signal of the servo motor driver 151 can be converted into the angular displacement or angular speed on the motor shaft for output. The embodiment of the utility model provides a locomotive part testing arrangement adopts servo motor as the rotary power of locomotive part 14 that awaits measuring, compares with the test scheme that adopts asynchronous machine among the prior art, and simulation locomotive speed is stable, the detection precision is higher.
Fig. 4 is a schematic structural diagram of another locomotive component testing device according to an embodiment of the present invention, as shown in fig. 4, optionally, the signal output module 12 includes a pulse signal generating unit 121, and the locomotive component 14 to be tested includes a digital-to-analog conversion box. The pulse signal generating unit 121 includes a first control signal receiving terminal 311 and a pulse test signal output terminal 321, the control signal output terminal 21 includes a first control signal output terminal 211, the first control signal receiving terminal 311 and the first control signal output terminal 211 are electrically connected, and the pulse test signal output terminal 321 is electrically connected to the signal input terminal 51 of the digital-to-analog conversion box. The signal detection module 13 includes a dc current detection unit 134, the dc current detection unit 134 includes a fourth feedback signal receiving terminal 414 and a dc current detection signal output terminal 424, the detection signal receiving terminal 22 further includes a dc current detection signal receiving terminal 224, the fourth feedback signal receiving terminal 414 is electrically connected to the signal output terminal 523 of the dac box, the dc current detection signal output terminal 424 is electrically connected to the dc current detection signal receiving terminal 224, and the control module 11 is configured to obtain a third detection result of the dac box according to the dc detection signal.
Illustratively, as shown in fig. 4, the locomotive component 14 to be tested is a digital-to-analog converter box, the control module 11 sets a simulated locomotive speed, the control module 11 sends a first control signal to the pulse signal generating unit 121 according to the set simulated locomotive speed, thereby controlling the pulse signal generating unit 121 to send a pulse test signal with a frequency corresponding to the simulated locomotive speed to the digital-to-analog converter box, the digital-to-analog converter box receives the pulse test signal with the frequency corresponding to the simulated locomotive speed and converts the pulse test signal into a dc current signal, the dc current detecting unit 134 converts the dc current signal into a dc current detection signal and sends the dc current detection signal to the control module 11, the control module 11 performs analog-to-digital conversion according to the dc current value of the dc current detection signal and calculates a third detection result of the digital-to-analog converter box, and the third detection result comprises speed information output by the digital-to-analog conversion box, the speed information output by the digital-to-analog conversion box is compared with the set speed of the analog locomotive, and the conversion error of the digital-to-analog conversion box is detected, so that the performance test of the digital-to-analog conversion box is completed. The embodiment of the utility model provides a locomotive part testing arrangement utilizes pulse signal generating unit 121 simulation speed sensor to send the pulse test signal with the corresponding frequency of simulation locomotive speed to the digital analog conversion box, accomplishes the capability test of digital analog conversion box, and degree of automation and detection precision are higher.
Fig. 5 is a schematic structural diagram of another locomotive component testing device according to an embodiment of the present invention, as shown in fig. 5, optionally, the signal output module 12 includes a current signal generating unit 122, and the locomotive component 14 to be tested includes a speed display instrument. The current signal generating unit 122 includes a second control signal receiving terminal 312 and a current test signal output terminal 322, the control signal output terminal 21 includes a second control signal output terminal 212, the second control signal receiving terminal 312 and the second control signal output terminal 212 are electrically connected, and the current test signal output terminal 322 is electrically connected to the signal input terminal 51 of the speed display instrument.
For example, as shown in fig. 5, the locomotive component 14 to be tested is a speed display instrument, the control module 11 sets a simulated locomotive speed, the control module 11 sends a second control signal to the current signal generating unit 122 according to the set simulated locomotive speed, so that the current signal generating unit 122 simulates a digital-to-analog conversion box to send a current test signal corresponding to the simulated locomotive speed to the speed display instrument, the speed display instrument receives the current test signal corresponding to the simulated locomotive speed and displays a current speed according to the current test signal, the speed indicated by a pointer of the speed display instrument is observed manually, the speed indicated by the pointer of the speed display instrument is compared with the set simulated locomotive speed, an error of the speed display instrument is determined, and a performance test of the speed display instrument is completed. The embodiment of the utility model provides a locomotive part testing arrangement utilizes current signal generating unit 122 simulation digital analog conversion box to send and simulate the corresponding current test signal of locomotive speed to speed display instrument, accomplishes speed display instrument's capability test, and degree of automation and detection precision are higher.
With continued reference to fig. 2-5, optionally, the control module 11 includes an industrial personal computer 111 and an intelligent control unit 112, the industrial personal computer 111 includes a test command output terminal 71 and a measurement signal receiving terminal 73, the intelligent control unit 112 includes a test command receiving terminal 72 and a measurement signal output terminal 74, the test command output terminal 71 is electrically connected to the test command receiving terminal 72, and the measurement signal receiving terminal 73 is electrically connected to the measurement signal output terminal 74.
The intelligent control unit 112 may be a single chip microcomputer, and the industrial personal computer 111 and the intelligent control unit 112 communicate with each other to exchange test commands and measurement parameters. Illustratively, the industrial personal computer 111 is used for human-computer interaction, the speed of the simulated locomotive is set through the industrial personal computer 111, the industrial personal computer 111 sends a test command of the speed of the simulated locomotive to the intelligent control unit 112, and the intelligent control unit 112 converts the test command of the speed of the simulated locomotive into a pulse frequency, so as to control the pulse signal generating unit 121 to generate and output a pulse test signal corresponding to the pulse frequency. The intelligent control unit 112 receives the detection signal and converts the detection signal into a measurement signal, and the intelligent control unit 112 transmits the measurement signal to the industrial personal computer 111, so that the industrial personal computer can calculate and process the measurement signal conveniently.
Fig. 6 is a schematic structural diagram of another testing apparatus for locomotive components according to an embodiment of the present invention, as shown in fig. 6, optionally, the intelligent control unit 112 includes an analog-to-digital converter 1121, the analog-to-digital converter 1121 is electrically connected to the detection signal output terminal 42, and the analog-to-digital converter 1121 is configured to convert the detection signal output by the signal detection module 13 into a digital signal.
The analog-to-digital converter 1121 converts the detection signal received by the intelligent control unit 112 into a digital signal, and transmits the digital signal to the industrial personal computer 111, so that the industrial personal computer can process and display the digital signal conveniently.
In summary, fig. 7 is a schematic structural diagram of another locomotive component testing device provided by the embodiment of the present invention, as shown in fig. 7, the locomotive component testing device provided by the embodiment of the present invention includes a control module 11, a signal output module 12, a signal detection module 13 and a driving module 15. The control module 11 includes an industrial personal computer 111 and an intelligent control unit 112, and the industrial personal computer 111 is electrically connected with the intelligent control unit 112. The signal output module 12 includes a pulse signal generating unit 121 and a current signal generating unit 122, the pulse signal generating unit 121 and the current signal generating unit 122 are both electrically connected to the intelligent control unit 112, the control signal receiving terminal 31 includes a first control signal receiving terminal 311 and a second control signal receiving terminal 312, and the test signal output terminal 32 includes a pulse test signal output terminal 321 and a current test signal output terminal 322. The signal detection module 13 includes a dc voltage detection unit 131, a pulse signal detection unit 132, an ac voltage detection unit 133, and a dc current detection unit 134, the dc voltage detection unit 131, the pulse signal detection unit 132, the ac voltage detection unit 133, and the dc current detection unit 134 are all electrically connected to the intelligent control unit 112, and the feedback signal receiving terminal 41 includes a first feedback signal receiving terminal 411, a second feedback signal receiving terminal 412, a third feedback signal receiving terminal 413, and a fourth feedback signal receiving terminal 414; the detection signal output terminal 42 includes a dc voltage detection signal output terminal 421, a pulse detection signal output terminal 422, an ac voltage detection signal output terminal 423, and a dc current detection signal output terminal 424. The driving module 15 comprises a servo motor driver 151 and a servo motor 152, the servo motor driver 151 is electrically connected with the servo motor 152, so that the comprehensive test of locomotive components such as a speed sensor, a speed measuring motor, a digital-to-analog conversion box and a speed display instrument is realized, and the test process is efficient and accurate.
Specifically, when the locomotive component 14 to be tested is a speed sensor, the pulse signal generating unit 121 is electrically connected to the servo motor driver 151, the servo motor 152 is connected to the speed sensor, and the speed sensor is electrically connected to the dc voltage detecting unit 131 and the pulse signal detecting unit 132, respectively. During testing, the industrial personal computer 111 is used for setting the speed of the simulated locomotive, the intelligent control unit 112 controls the pulse signal generating unit 121 to generate and output a pulse test signal with corresponding frequency according to the speed of the simulated locomotive, the servo motor driver 151 drives the servo motor 152 to rotate according to the speed of the simulated locomotive according to the pulse test signal, and further drives the speed sensor to rotate according to the speed of the simulated locomotive, the speed sensor generates and outputs a speed measurement signal according to the rotating speed, the direct current voltage detection unit 131 converts the speed measurement signal into a direct current voltage detection signal and sends the direct current voltage detection signal to the intelligent control unit 112, and the pulse signal detection unit 132 converts the speed measurement signal into a pulse detection signal and sends the pulse detection signal to the intelligent control unit 112. The intelligent control unit 112 performs analog-to-digital conversion on the direct-current voltage detection signal, the industrial personal computer 111 obtains the high-low level amplitude of the speed measurement signal output by the speed sensor according to the direct-current voltage detection signal after the analog-to-digital conversion, the intelligent control unit 112 performs analog-to-digital conversion on the pulse detection signal, and the industrial personal computer 111 obtains the duty ratio, the phase difference and the pulse number per revolution of the speed measurement signal output by the speed sensor according to the pulse detection signal after the analog-to-digital conversion, so that the performance test of the speed sensor is.
When the locomotive component 14 to be tested is a tachometer motor, the pulse signal generating unit 121 is electrically connected to the servo motor driver 151, the servo motor 152 is connected to the tachometer motor, and the tachometer motor is electrically connected to the ac voltage detecting unit 133. During testing, the industrial personal computer 111 is used for setting the speed of the simulated locomotive, the intelligent control unit 112 controls the pulse signal generating unit 121 to generate and output a pulse test signal with corresponding frequency according to the speed of the simulated locomotive, the servo motor driver 151 drives the servo motor 152 to rotate according to the speed of the simulated locomotive according to the pulse test signal, further drives the speed measuring motor to rotate according to the speed of the simulated locomotive, the speed measuring motor generates and outputs an alternating voltage speed measuring signal according to the rotating speed, the alternating voltage detecting unit 133 converts the alternating voltage speed measuring signal into an alternating voltage detection signal and sends the alternating voltage detection signal to the intelligent control unit 112, the intelligent control unit 112 performs analog-to-digital conversion on the alternating voltage detection signal, the industrial personal computer 111 obtains the level amplitude of the alternating voltage speed measuring signal according to the alternating voltage detection signal after the analog-to-digital conversion, and obtains the speed measured by, and comparing the speed measured by the speed measuring motor with the set speed of the simulated locomotive to finish the speed measuring performance test of the speed measuring motor.
When the locomotive component 14 to be tested is a digital-to-analog converter box, the pulse signal generating unit 121 is electrically connected to the digital-to-analog converter box, and the digital-to-analog converter box is electrically connected to the direct current detecting unit 134. During testing, the speed of the analog locomotive is set through the industrial personal computer 111, the intelligent control unit 112 controls the pulse signal generating unit 121 to generate a pulse test signal with a corresponding frequency according to the speed of the analog locomotive, the pulse signal generating unit 121 sends the pulse test signal to the digital-to-analog conversion box, the digital-to-analog conversion box receives the pulse test signal with the frequency corresponding to the speed of the analog locomotive and converts the pulse test signal into a direct current signal, the direct current detection unit 134 converts the direct current signal into a direct current detection signal and sends the direct current detection signal to the intelligent control unit 112, the intelligent control unit 112 performs analog-to-digital conversion on the direct current detection signal, the industrial personal computer 111 obtains the current value of the direct current detection signal according to the direct current detection signal after the analog-to-digital conversion and calculates the speed output by the current value to obtain the speed output by the digital-to-analog conversion box, and compares the speed information output by the digital-to, and detecting the conversion error of the digital-to-analog conversion box, thereby completing the performance test of the digital-to-analog conversion box.
When the locomotive component 14 to be tested is a speed display instrument, the current signal generating unit 122 is electrically connected with the speed display instrument. During testing, the speed of the simulated locomotive is set through the industrial personal computer 111, the intelligent control unit 112 controls the current signal generating unit 122 to generate a current test signal corresponding to a current value according to the speed of the simulated locomotive, the current signal generating unit 122 transmits the current test signal to the speed display instrument, the speed display instrument displays the current speed according to the current test signal, the speed indicated by the pointer of the speed display instrument is observed manually, the speed indicated by the pointer of the speed display instrument is compared with the set speed of the simulated locomotive, the error of the speed display instrument is judged, and therefore the performance test of the speed display instrument is completed.
The embodiment of the utility model provides a comprehensive testing device to multiple locomotive part when testing different locomotive parts, provides different test signal, realizes that a testing arrangement carries out the capability test to multiple locomotive part, and this testing arrangement simulation locomotive speed is stable, the function integrated level is high, degree of automation is high, system operation safe and reliable just detects the precision height.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (9)
1. The locomotive component testing device is characterized by comprising a control module, a signal output module and a signal detection module; the control module comprises a control signal output terminal and a detection signal receiving terminal, the signal output module comprises a control signal receiving terminal and a test signal output terminal, and the signal detection module comprises a feedback signal receiving terminal and a detection signal output terminal;
the control signal output terminal is electrically connected with the control signal receiving terminal, the test signal output terminal is electrically connected with a signal input end of a locomotive component to be tested, the feedback signal receiving terminal is electrically connected with a signal output end of the locomotive component to be tested, and the detection signal output terminal is electrically connected with the detection signal receiving terminal;
the locomotive component to be tested comprises at least one of a speed sensor, a speed measuring motor, a digital-to-analog conversion box and a speed display instrument which are arranged on the locomotive.
2. The locomotive component testing device of claim 1, further comprising a driver module, the driver module including a pulsed test signal receiving terminal;
the signal output module comprises a pulse signal generating unit; the pulse signal generating unit comprises a first control signal receiving terminal and a pulse test signal output terminal, the control signal output terminal comprises a first control signal output terminal, and the first control signal receiving terminal is electrically connected with the first control signal output terminal; the pulse test signal output terminal is electrically connected with the pulse test signal receiving terminal;
the driving module is connected with the locomotive component to be tested.
3. The locomotive component testing device according to claim 2, wherein the signal detection module comprises a direct current voltage detection unit and a pulse signal detection unit; the locomotive component to be tested comprises a speed sensor;
the direct-current voltage detection unit comprises a first feedback signal receiving terminal and a direct-current voltage detection signal output terminal; the pulse signal detection unit comprises a second feedback signal receiving terminal and a pulse detection signal output terminal; the detection signal receiving terminal comprises a direct-current voltage detection signal receiving terminal and a pulse detection signal receiving terminal; the first feedback signal receiving terminal and the second feedback signal receiving terminal are electrically connected with a signal output end of the speed sensor, the direct-current voltage detection signal output terminal is electrically connected with the direct-current voltage detection signal receiving terminal, and the pulse detection signal output terminal is electrically connected with the pulse detection signal receiving terminal.
4. The locomotive component testing device of claim 2, wherein the signal detection module comprises an alternating voltage detection unit; the locomotive component to be tested comprises a speed measuring motor;
the alternating voltage detection unit comprises a third feedback signal receiving terminal and an alternating voltage detection signal output terminal, the control signal receiving terminal further comprises an alternating voltage detection signal receiving terminal, the third feedback signal receiving terminal is electrically connected with a signal output end of the speed measuring motor, and the alternating voltage detection signal output terminal is electrically connected with the alternating voltage detection signal receiving terminal.
5. The locomotive component testing device of claim 2, wherein the drive module comprises a servo motor driver and a servo motor;
the servo motor driver is electrically connected with the servo motor,
the servo motor is connected with the locomotive component to be tested.
6. The locomotive component testing device of claim 1, wherein the signal output module comprises a pulse signal generating unit; the locomotive component to be tested comprises a digital-to-analog conversion box;
the pulse signal generating unit comprises a first control signal receiving terminal and a pulse test signal output terminal, the control signal output terminal comprises a first control signal output terminal, and the first control signal receiving terminal is electrically connected with the first control signal output terminal; the pulse test signal output terminal is electrically connected with the signal input end of the digital-to-analog conversion box;
the signal detection module comprises a direct current detection unit, the direct current detection unit comprises a fourth feedback signal receiving terminal and a direct current detection signal output terminal, the detection signal receiving terminal further comprises a direct current detection signal receiving terminal, the fourth feedback signal receiving terminal is electrically connected with the signal output end of the digital-to-analog conversion box, and the direct current detection signal output terminal is electrically connected with the direct current detection signal receiving terminal.
7. The locomotive component testing device of claim 1, wherein the signal output module comprises a current signal generating unit; the locomotive component to be tested comprises a speed display instrument;
the current signal generating unit comprises a second control signal receiving terminal and a current test signal output terminal, the control signal output terminal comprises a second control signal output terminal, and the second control signal receiving terminal is electrically connected with the second control signal output terminal; and the current test signal output terminal is electrically connected with the signal input end of the speed display instrument.
8. The locomotive component testing device of claim 1, wherein the control module comprises an industrial personal computer and an intelligent control unit;
the industrial computer includes test command output terminal and measurement signal receiving terminal, intelligent control unit includes test command receiving terminal and measurement signal output terminal, test command output terminal with test command receiving terminal electricity is connected, measurement signal receiving terminal with measurement signal output terminal electricity is connected.
9. The locomotive component testing device of claim 8, wherein the intelligent control unit comprises an analog-to-digital converter;
the analog-to-digital converter is electrically connected with the detection signal output terminal.
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| CN110726853A (en) * | 2019-12-02 | 2020-01-24 | 北京铁道工程机电技术研究所股份有限公司 | A locomotive component testing device |
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