Intelligent metering equipment of railway locomotive instrument

Abstract

The invention discloses intelligent metering equipment for a railway locomotive instrument, relates to the technical field of railway locomotive instrument detection and verification equipment, and aims to solve the problem of low operation efficiency caused by single function and scattered layout of metering equipment. Wherein the cabinet is divided into a metering working bin and a device mounting bin; the metering working bin is positioned above the device mounting bin; the metering working bin is provided with a sealing door, and a shifting assembly is arranged on the side wall, opposite to the sealing door, in the metering working bin. An image acquisition assembly is mounted on the displacement assembly; a ventilation window is arranged on the bottom surface in the metering working bin; a mounting seat is arranged in the metering working bin; the mounting seat is positioned between the image acquisition assembly and the sealing door; the mounting seat is connected with a corresponding signal source; the device installation bin is provided with a metering control assembly, an environment control assembly and a signal source. The power supply is electrically connected with the metering control assembly, the environment control assembly, the signal source, the image acquisition assembly and the displacement assembly. According to the metering equipment, the working efficiency and quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of railway locomotive instrument detection and calibration equipment, and specifically to an intelligent metering device for railway locomotive instruments. Background Art

[0002] Metrology plays an increasingly important basic guarantee role in the fields of railway operation management, engineering construction, equipment manufacturing, and goods trade, strongly supporting the high-quality development of railways. As a very important railway equipment, during the operation of a locomotive, various instruments, sensors, etc. are needed to monitor and display various parameters for the driver and relevant on-board personnel to observe in real time whether the various parameters of the locomotive operation are normal; therefore, whether the locomotive instruments can accurately reflect the true condition of the locomotive is a major issue related to train operation safety.

[0003] Therefore, it is necessary to regularly calibrate or verify locomotive instruments. At present, the following problems exist in the calibration or verification of locomotive instruments and related management work in each locomotive depot in China: (1) The existing locomotive instrument metering (calibration, verification) equipment has a single function. The locomotive instrument metering work needs to go through the following process: instrument classification and sorting, separately transporting to the corresponding metering workstations according to the classification, and the operators at each workstation separately perform metering calibration or metering verification. The work is complicated and the work efficiency is low; (2) The existing metering equipment (workstations) is scattered; as the number of instruments (including sensors) that need to be removed from the locomotive for metering work decreases, the workload borne by each operator decreases; however, if only the number of operators is simply reduced, it will increase the time for the operators to shuttle back and forth between different metering workstations, and the operators need to master the skills of operating different metering equipment, which requires relatively high personal abilities and qualities.

[0004] For this reason, the utility model patent with the authorization announcement number of "CN207317830U" and the name of "a railway locomotive vehicle instrument detection device" solves the above problems by integrating the detection devices of several locomotive instruments on the same workbench. However, this device does not essentially change the operation mode, and the instrument calibration and detection work is still completed manually. At present, the instruments configured on locomotives mainly include locomotive pressure gauges, voltmeters, ammeters, speedometers, etc. Most of these instruments on locomotives are mainly pointer-type (single-needle or double-needle) instruments. The calibration or verification process is complex, and it is necessary to record and manually read the indicated values of the instruments, and there is a large amount of data. Moreover, after the locomotive instruments are removed from the locomotive, they need to be left standing in a constant temperature and humidity environment for a certain period of time (usually 24 hours) before carrying out metrological calibration (or metrological verification) work. Therefore, the operation process is not continuous. Generally speaking, this patent (a railway locomotive vehicle instrument detection device) only makes some improvements to the single function of existing metrological equipment and the scattered layout of metrological equipment (workstations), and does not bring substantial changes to the work efficiency of locomotive instrument metrology.

[0005] As can be seen from the above, there is still a need to develop a metrological device that can truly solve the existing problems in current locomotive instrument metrological verification. Summary of the Invention

[0006] The technical problem to be solved by the present invention is the low operation efficiency and high personnel requirements in the locomotive instrument metrological verification work caused by the single function and scattered layout of locomotive instrument metrological equipment. For this reason, the present invention provides a railway locomotive instrument intelligent metrological device that can efficiently complete the locomotive instrument metrological verification work in one stop.

[0007] To achieve the above object, the technical solution adopted by the present invention is: to provide a railway locomotive instrument intelligent metrological device, including a cabinet, a power supply, a signal source, a metrological control component, an environment control component, an image acquisition component, and a displacement component; the cabinet is divided into a metrological work bin and a device installation bin; the metrological work bin is an independent space located above the device installation bin; a sealing door is provided on the front of the metrological work bin, and the displacement component is provided on the side wall of the metrological work bin opposite to the sealing door; the image acquisition component is installed on the displacement component, and the displacement component drives the image acquisition component to move in a vertical plane; a ventilation window is provided on the inner bottom surface of the metrological work bin; several mounting seats are provided in the metrological work bin; the mounting seats are located between the image acquisition component and the sealing door; the mounting seats are connected to the corresponding signal sources; the metrological control component, the environment control component, and the signal source are provided in the device installation bin; the power supply is electrically connected to the metrological control component, the environment control component, the signal source, the image acquisition component, and the displacement component respectively; the environment control component is communicated with the ventilation window of the metrological work bin.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: The metering working bin in the cabinet provides a constant temperature and humidity sealed space for metering work. After the instrument is disassembled, it is directly installed on the corresponding installation slot in the metering working bin, saving the handling time of the instrument; The image acquisition component is driven by the displacement component to complete the image acquisition and indication reading of the instrument verification process on each installation slot, replacing the manual reading and recording work, and improving the operation efficiency and quality.

[0009] To achieve better technical effects, on the basis of the above technical solutions, the following improvements can be made, and the specific improvement solutions are as follows.

[0010] Further, the number and type of mounting seats in the metering working bin match the number and type of pointer-type instruments on the locomotive.

[0011] That is, according to the instruments of the assigned locomotive model, the number and type of mounting seats are customized, realizing the metering operation of all pointer-type instruments on a locomotive in a true sense of one-stop, and greatly improving the operation efficiency.

[0012] Further, the signal source includes a voltage source, a current source, a resistance source, and a pressure source; The mounting seat at least includes mounting seats for installing mechanical pressure gauges, voltage and current meters, and locomotive speedometers.

[0013] Further, the mounting seats in the metering working bin are arranged in layers.

[0014] Further, the mounting seats are arranged in layers in the vertical direction and are divided into three layers; The mounting seat for the mechanical pressure gauge is arranged on the top layer, the mounting seat for the voltage and current meter is arranged on the middle layer, and the mounting seat for the locomotive speedometer is arranged on the bottom layer.

[0015] Further, the image acquisition component includes a camera, a fill light, and a mounting bracket; The mounting bracket is fixedly installed on the displacement component, and the camera and the fill light are fixed on the mounting bracket.

[0016] Further, two surface light sources are used for the fill light, and the surface light sources are symmetrically arranged on both sides of the camera.

[0017] Further, the displacement component adopts a cross module or a series mechanical arm with three or more axes.

[0018] Further, the top edge of the sealing door is hinged to the cabinet body, and support rods are respectively connected between the two side edges of the sealing door and the cabinet. The support rods adopt gas spring type support rods.

[0019] Further, the metering control component includes an industrial control computer and an input / output module; The industrial control computer adopts a fanless embedded industrial computer; An air conditioner is used as the environmental control component. Description of the Drawings

[0020] Figure 1 is the front view of the embodiment of the present invention; Figure 2 is Figure 1 the corresponding perspective view of the embodiment of the present invention; Figure 3 is the structural schematic diagram of the cabinet in the embodiment of the present invention; Figure 4 is Figure 3 the sectional view taken along the A-A direction of the corresponding cabinet; Figure 5 is the structural schematic diagram of the image acquisition component in the embodiment of the present invention; Figure 6 is Figure 5 the top view of the image acquisition component in the embodiment of the present invention with the In the figure: cabinet 1, metering work bin 101, sealing door 1011, mounting seat 1012; device installation bin 102; image acquisition component 2, camera 201, fill light 202, mounting bracket 203; displacement component 3. Specific embodiments

[0021] The present invention will be described in detail below in conjunction with the drawings and embodiments.

[0022] The intelligent metering device for railway locomotive instruments provided in this embodiment mainly consists of a cabinet 1, a power supply, a signal source, a metering control component, an environment control component, an image acquisition component 2, and a displacement component 3.

[0023] Among them, the cabinet 1 is divided into a metering work bin 101 and a device installation bin 102. In this embodiment, the cabinet 1 is cube-shaped, close to a cuboid structure. After being cut by sheet metal processing (such as bending, punching, cutting, etc.) using a metal plate (such as a steel plate with a material of Q235 and a thickness of 1.2 mm), it is then formed by welding or riveting processes. In the implementation process, in order to strengthen the strength and stability of the cabinet 1, a support skeleton is built inside the cabinet 1 using metal profiles, and then the processed metal plate is fixed on the support skeleton.

[0024] In this embodiment, the independent space in the upper right of the cabinet 1 is the metering work bin 101; the space below the metering work bin 101 is the device installation bin 102. The space between the back of the metering work bin 101 and the inner wall of the cabinet 1 is connected to the device installation bin 102 and is used to install electrical components such as terminal blocks and relays, as well as control air circuits and other accessories.

[0025] Such as Figure 1As shown in the figure, a sealing door 1011 is provided on the front of the metering working bin 101. A displacement assembly 3 is provided on the side wall of the metering working bin 101 opposite to the sealing door 1011. In this embodiment, bolts are used to fix the fixed part (stator) of the displacement assembly 3 on the side wall; the moving part (rotor) of the displacement assembly 3 is used to install the image acquisition assembly 2, and the image acquisition assembly 2 is fixed on the moving part of the moving assembly.

[0026] The displacement assembly 3 drives the image acquisition assembly 2 to move in the vertical plane, and the moving range at least covers the range where all the mounting seats 1012 are located, that is, to ensure that the image acquisition assembly 2 can move to the front of any meter to be calibrated (or the preset indication reading position, that is, the image acquisition position).

[0027] As Figure 2 As shown in the figure, ventilation windows are respectively provided at the inner bottom surface of the metering working bin 101 near the left and right side walls. The ventilation windows are of rectangular structure and are covered with covers provided with ventilation holes. Since the structures of the ventilation windows and the covers are relatively simple and the position requirements are not very strict, they are not shown in the drawings.

[0028] Several mounting seats 1012 are provided in the metering working bin 101. The mounting seats 1012 are used to mount the meters to be calibrated (verified). The mounting seats 1012 are located between the image acquisition assembly 2 and the sealing door 1011; the mounting seats 1012 are connected to the corresponding signal sources to provide the signals required for the meter calibration (verification) operation. In the specific implementation process, the quantity and type of the mounting seats 1012 should be planned according to specific needs.

[0029] The metering control assembly, the environment control assembly and the signal source are all installed in the device installation bin 102.

[0030] The power supply is electrically connected to the metering control assembly, the environment control assembly, the signal source, the image acquisition assembly 2 and the displacement assembly 3 respectively; the power supply uses AC220V, 50Hz.

[0031] The environment control assembly is communicated with the ventilation window of the metering working bin 101, and the temperature and humidity of the metering working bin 101 are regulated through the ventilation window.

[0032] In the specific implementation process, in order to obtain better effects, the following preferred implementation schemes can also be adopted, and the details are as follows.

[0033] As a preferred implementation scheme, the quantity and type of the mounting seats 1012 in the metering working bin 101 match the quantity and type of the pointer-type meters on the locomotive.

[0034] In the specific implementation process, according to the types of locomotives allocated within a section, the quantity and types of pointer-type instruments are counted, and corresponding mounting seats 1012 are set in the metering work bin 101. That is, according to the instruments of the allocated locomotive types, the quantity and types of the mounting seats 1012 are customized, so as to truly complete the metrological verification operations of all pointer-type instruments on a locomotive in one-stop, greatly improving the operation efficiency.

[0035] As a preferred implementation scheme, the signal sources include a voltage source, a current source, a resistance source, and a pressure source; the mounting seats 1012 at least include the mounting seats 1012 for installing mechanical pressure gauges, voltage and current meters, and locomotive speedometers. Each mounting seat 1012 is connected to the corresponding signal source.

[0036] Among the voltage source, the current source, and the resistance source, a multifunctional calibrator is used as the generating device for voltage and current signals. When selecting the type, a multifunctional calibrator with a wide range, fine grading, high precision, and good stability is selected; a standard resistor is used as the resistance source to output resistance signals mainly for calibrating mechanical pressure gauges.

[0037] The pressure source adopts a pressure generating device with a built-in pressure generator, which does not require an external gas source, and the generated pressure is fast, stable, and without overshoot; and a high-precision pressure sensor is installed at the outlet of the pressure generating device to collect the generated pressure in real time.

[0038] As a preferred implementation scheme, as Figure 1 、 2 shown, the mounting seats 1012 in the metering work bin 101 are arranged in layers. A layer board is made of bent steel plates, and the corresponding number of mounting seats 1012 are set on the layer board, and the corresponding signal sources are connected to the mounting seats 1012 from below the layer board.

[0039] In the specific implementation, as Figure 4 shown, ( Figure 4 the mounting seats are omitted in the figure, which is mainly used to show the "layered arrangement"), the mounting seats 1012 are three layers in the vertical direction; the mounting seats 1012 for mechanical pressure gauges are set on the top layer, the mounting seats 1012 for voltage and current meters are set on the middle layer, and the mounting seats 1012 for locomotive speedometers are set on the bottom layer. Specifically, for example, eight mounting seats 1012 for calibrating mechanical pressure gauges are set on the top layer, ten mounting seats 1012 for calibrating arc-shaped square meters (this meter is an electrical signal instrument, that is, a voltage and current meter) are set on the middle layer, and one mounting seat 1012 for calibrating a circular speedometer and one mounting seat 1012 for calibrating a mechanical tachometer are set on the bottom layer.

[0040] In the specific implementation process, in the metering work bin 101, a corresponding simulated tapping mechanism is set above each mounting seat on the top layer. Under the control of the metering control component, the simulated tapping mechanism replaces manual labor to perform the action of tapping the instrument during the verification process of the mechanical pressure gauge.

[0041] As a preferred implementation scheme, the image acquisition component 2 includes a camera 201 , a fill light 202 and a mounting frame 203 ; the mounting frame 203 is fixedly mounted on the shift component 3 , and the camera 201 and the fill light 202 are fixed on the mounting frame 203 .

[0042] The mounting frame 203 of the image acquisition component 2 (i.e., the machine vision component) includes a light source mounting portion and a camera mounting portion, such as Figure 5 The camera 201 used in this embodiment is a binocular camera, and two groups of binocular cameras are configured to meet the needs of collecting instrument value images of different postures. Figure 5 As shown, the horizontally arranged binocular camera is used to read the indications of the pressure gauge, locomotive speedometer and other instruments with vertical dials to be tested, and another set of double-sided cameras is used to read the indications of the arc-shaped square meter.

[0043] In addition, the image acquisition component 2 preferably selects a camera 201 with low noise, high resolution and excellent image quality; the camera 201 of the image acquisition component 2 transmits the uncompressed image to the metering control component in real time through the USB3.0 interface for image analysis. The fill light 202 fills the light for the camera 201 to make the captured image noise-free and of high quality, which is convenient for image analysis.

[0044] As a preferred implementation, the fill light 202 uses two surface light sources, which are symmetrically arranged on both sides of the camera 201 .

[0045] The light source selected by the fill light 202 uses LED lamp beads to form a surface light source through a diffuser plate. Figure 3 As shown, two surface light sources are symmetrically arranged on both sides of the camera 201 so that the illumination range covers the entire dial of the instrument to be tested. In order to facilitate the adjustment of the light source position, the camera mounting part and the light source mounting part of the mounting frame 203 are hingedly connected, and the hinge axis is in the vertical direction. The two are hingedly connected by a damping hinge, so that the light source can be adjusted according to the required illumination angle. For example, the plane where the surface light source on both sides of the camera 201 is located can be adjusted to a position with an angle of 50° as needed, that is, Figure 6 As shown, there is an angle of 25° with the symmetry plane.

[0046] As a preferred embodiment, the displacement assembly 3 adopts a cross module.

[0047] A cross module is used as the shifting component 3 to drive the image acquisition component 2 to move to the indication reading position of the instrument to be calibrated (verified). The measurement control component controls the shifting component 3 to achieve accurate alignment between the image acquisition component 2 and the instrument to be verified.

[0048] In addition, a serial manipulator with more than three axes can be used as the displacement component 3. The base of the serial manipulator is fixed on the inner wall of the metering working bin 101 as the stator of the displacement component 3; the end of the serial manipulator is the mover of the displacement component 3, and the image acquisition component 2 is fixedly installed on it.

[0049] As a preferred implementation, the top edge of the sealing door 1011 is hinged to the cabinet body, and support rods are respectively connected between the two side edges of the sealing door 1011 and the cabinet 1. The support rods are pneumatic spring type support rods. The sealing door 1011 is made of tempered glass or other transparent materials (such as acrylic plates, etc.).

[0050] As a preferred implementation, the metering control component includes an industrial control computer and an input / output module; the industrial control computer uses a fanless embedded industrial computer; an air conditioner is used as the environmental control component.

[0051] The metering control component serves as the control core. It is connected to an imported IO control module through the industrial control computer, and different signal sources are connected to different instrument signal terminals through different signal lines controlled by IO channels, ensuring that the signal types required by different instruments are conducted with the signals emitted by the signal sources. Using bus technology, the computer controls the pressure source, voltage and current source, resistance source, and speed generating device to send the required signals to the current instrument, controls the motion component to move the vision component to the position of the instrument to be metered, controls the camera 201 to take pictures, and performs three-dimensional reconstruction and difference processing on the obtained pictures to automatically analyze the current indication value of the instrument.

[0052] In addition, a display, a mouse, and a keyboard for displaying the metering process, setting relevant parameters, and connected to the industrial control computer in the metering control component are also provided on the side wall of the cabinet 1; for the convenience of printing and viewing the verification results, a wireless or wired printer can also be configured.

[0053] When using the intelligent metering device for railway locomotive instruments provided by the present invention to complete all the instruments on a locomotive (referring to the pointer-type instruments that need to be disassembled for metering calibration or verification), the metering calibration (verification) steps are as follows: Step 1: Disassemble all the pointer-type instruments that need to be metered off the vehicle. Step 2: Install the disassembled pointer-type instruments on the corresponding mounting seats 1012 in the metering working bin 101 according to their types. Step 3: Set the relevant information of the instrument through the metering control component, and start the timed automatic verification mode after the information setting is completed. Step 4: After the temperature and humidity in the metering work bin 101 reach the set values (it is advisable to select a temperature of 23 °C and a humidity of 50%, and these parameters meet the calibration requirements of all meters to be tested), start timing. After the timing is completed, under the action of the metering control component, the calibration of the meters is completed in the order from top to bottom and from left to right.

[0054] During the meter calibration process, the metering control component controls the shifting component 3 to move the image acquisition component 2 to the position for reading the indication value of the meter to be calibrated; then, it controls the signal source to send signals of corresponding values according to the calibration procedure, and the image acquisition component 2 takes pictures of each detection point and transmits the taken pictures to the metering control component. Finally, the metering control component analyzes the images, "reads out" the corresponding indication values, and gives the meter metering calibration results according to the calibration procedure, that is, whether it is qualified or not.

[0055] Step 5: After completing the calibration of all meters in the metering work bin 101, the operation is completed, and relevant signals are sent to the operators.

Claims

1. An intelligent metering device for railway locomotive instruments, comprising a cabinet, a power supply, and a signal source, characterized in that: It also includes a metering control component, an environmental control component, an image acquisition component, and a displacement component; The cabinet is divided into a metering working bin and a device installation bin; The metering working bin is an independent space located above the device installation bin; A sealed door is provided on the front of the metering working bin, and the displacement component is provided on the side wall of the metering working bin opposite to the sealed door; The image acquisition component is installed on the displacement component, and the displacement component drives the image acquisition component to move in a vertical plane; A ventilation window is provided on the inner bottom surface of the metering working bin; Several mounting seats are provided in the metering working bin; The mounting seats are located between the image acquisition component and the sealed door; The mounting seats are connected to the corresponding signal sources; The metering control component, the environmental control component, and signal sources are provided in the device installation bin; The power supply is electrically connected to the metering control component, the environmental control component, the signal sources, the image acquisition component, and the displacement component respectively; The environmental control component is communicated with the ventilation window of the metering working bin.

2. The intelligent metering device for railway locomotive instruments according to claim 1, characterized in that: The number and type of the mounting seats in the metering working bin match the number and type of the pointer-type instruments on the locomotive.

3. The intelligent metering device for railway locomotive instruments according to claim 1, wherein: The signal sources include a voltage source, a current source, a resistance source, and a pressure source; The mounting seats at least include the mounting seats for installing mechanical pressure gauges, voltage and current meters, and locomotive speedometers.

4. The intelligent metering device for railway locomotive instruments according to claim 2 or 3, characterized in that: The mounting seats in the metering working bin are arranged in layers.

5. The intelligent metering device for railway locomotive instruments according to claim 4, characterized in that: The mounting seats arranged in layers are arranged in layers in the vertical direction and are divided into three layers; The mounting seat for the mechanical pressure gauge is arranged on the top layer, the mounting seat for the voltage and current meter is arranged on the middle layer, and the mounting seat for the locomotive speedometer is arranged on the bottom layer.

6. The intelligent metering device for railway locomotive instruments according to claim 1, wherein: The image acquisition component includes a camera, a fill light, and a mounting bracket; The mounting bracket is fixedly installed on the displacement component, and the camera and the fill light are fixed on the mounting bracket.

7. The intelligent metering device for railway locomotive instruments according to claim 6, characterized in that: The fill light adopts two surface light sources, and the surface light sources are symmetrically arranged on both sides of the camera.

8. The intelligent metering device for railway locomotive instruments according to claim 1, characterized in that: The displacement component adopts a cross module or a series robotic arm with three or more axes.

9. The intelligent metering device for railway locomotive instruments according to claim 1, characterized in that: The top edge of the sealed door is hinged to the cabinet body, and support rods are respectively connected between the two side edges of the sealed door and the cabinet, and the support rods adopt gas spring type support rods.

10. The intelligent metering device for railway locomotive instruments according to claim 1, characterized in that: The metering control component includes an industrial control computer and an input / output module; The industrial control computer adopts a fanless embedded industrial computer; An air conditioner is used as the environmental control component.

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