CN202110191U - Portable Locomotive Speedometer Testing Equipment - Google Patents

Abstract

The utility model relates to portable locomotive speedometer detection equipment, which is used for detection of double pointer speedometers on CRH type locomotives. The portable locomotive speedometer detection equipment comprises a suitcase, and a signal input unit, a USB data acquisition card, an industrial computer and a signal output unit which are arranged inside the suitcase, wherein the signal input unit comprises speed signal input and mileage signal input, the input end of the speed signal input is connected with a speed regulation turn button on the panel of the suitcase body, one output end of the speed signal input is connected with a speedometer through a signal output port on the panel of the suitcase body, the other output end of the speed signal input is connected with the USB data acquisition card, the USB data acquisition card is respectively connected with the industrial computer and the signal output unit, the signal output unit is connected with the speedometer through the signal output port on the panel of the suitcase body, and the industrial computer controls the mileage signal input. The portable locomotive speedometer detection equipment is small and exquisite, thereby being convenient for carrying; and can perform on-site detection on dismounted speedometers, thereby saving time and increasing work efficiency.

Description

Portable Locomotive Speedometer Testing Equipment

technical field

The utility model belongs to the detection equipment of the locomotive speedometer, in particular to a portable locomotive network pressure gauge detection equipment for the detection of the double-needle speedometer on the harmony type locomotive.

Background technique

The rapid development of my country's economy has brought about the rapid development of railway transportation. The locomotive is mainly used to pull or push other railway vehicles to run on the railway, and it is an important tool for railway transportation, so the normal operation of the locomotive must be guaranteed. In our country, the locomotive adopts the system of preventive regular maintenance, replacement repair and professional and centralized repair of main parts. At present, there are many locomotive maintenance items, heavy workload, cumbersome operation, and low work efficiency. The specific performance is: because the inspection equipment is heavy and not easy to carry, the parts that need to be overhauled can only be disassembled from the locomotive, and then transported to the overhaul Location for maintenance work. The routine testing work of the speedometer of Harmony locomotives is as follows: maintenance personnel first remove the speedometer from the locomotive, then send it to the maintenance point, and test various indicators of the speedometer on the speedometer test bench, mainly including the appearance Inspection and verification of instrument readings. Adopt this mode of work, troublesome operation, a lot of time will be wasted on the way from the speedometer to the maintenance point, the number of maintenance locomotives in a certain period of time is reduced, and the work efficiency is not high. In addition, the speedometer is easily damaged during transportation. Therefore urgently wait for a kind of convenient to carry, simple to operate, economical and safe, efficient higher locomotive speedometer detection equipment.

Utility model content

The utility model provides a portable locomotive speedometer detection device aiming at the deficiencies in the above-mentioned prior art. The device has the advantages of being easy to carry, easy to operate, and capable of detecting the dismantled locomotive speedometer on the spot.

The technical scheme adopted by the utility model for solving the above-mentioned problems is: a portable locomotive speedometer detection device, including a suitcase and a signal input part placed in the box, a USB data acquisition card, an industrial computer and a signal output part; the signal input part includes a speed signal input and a mileage signal input, the input end of the speed signal input is connected with the speed control knob on the box panel, and one output end of the speed signal input passes through the signal output port on the box body panel Connect with the speedometer, the other output end of the speed signal input is connected with the USB data acquisition card; the USB data acquisition card is respectively connected with the industrial computer and the signal output part, and the signal output part is connected with the speedometer through the signal output port on the box panel , the industrial computer controls the mileage signal input.

According to the above scheme, the signal from the speed control knob is a 0-20mA direct current signal.

According to the solution above, the signal output by the signal output part is a pulse signal.

According to the above solution, the industrial computer has a touch screen and has its own battery.

According to the above scheme, the industrial computer has a miniature digital keyboard.

According to the above scheme, the industrial computer is connected with the data output port on the panel of the box body.

According to the above solution, the box body is made of aluminum alloy material.

Among them: the speed control knob provides a 0-20mA DC current signal for the detection equipment; the signal input part converts the signal sent by the speed control knob into an analog signal that can be recognized by the signal processing part, and the USB data acquisition card sends the signal to the signal input part The signal is collected, processed and sent; the signal output part transmits the pulse signal sent by the USB data acquisition card to the speedometer, and the industrial computer processes and analyzes the data sent by the signal processing part through the software compiled to obtain the verification result .

The working principle is: after adjusting the reading of the speedometer to be calibrated to a certain value through the speed control knob on the control panel, compare the speed value collected by the speedometer under test with the speed value collected by the industrial computer to judge whether the reading of the speedometer under test is correct. Mileage detection is by controlling the industrial computer to output a pulse to the speedometer to observe whether the speedometer is working to judge whether it is normal.

During detection, the speed control knob is controlled to output a 0-20mA DC current signal to the locomotive speedometer, and the corresponding speed of the locomotive speedometer is 0-160Km/h. At the same time, this signal is processed by the signal input part and transmitted to the USB data acquisition card. Different speed signals can be output through the speed control knob, and the current indication value of the speedometer can be input into the industrial computer, and the industrial computer can automatically calculate the current error. The mileage check outputs a pulse to the speedometer through the USB data acquisition card controlled by the industrial computer, and observes whether the speedometer works to judge whether the odometer test result is correct.

The beneficial effects of the utility model are: 1. The equipment is compact and easy to carry, and the disassembled speedometer can be detected on the spot, which saves the time that the speedometer must be transported to the detection station before, and improves the work efficiency; the possibility of damage to the speedometer. 2. Simple structure and convenient operation.

Description of drawings

Fig. 1 is a structural block diagram of the utility model.

Fig. 2 is the operation interface of the utility model.

Detailed ways

Further illustrate structure and operation of the present utility model below in conjunction with accompanying drawing.

Referring to Fig. 1, the portable locomotive speedometer detection equipment includes a suitcase and a signal input part placed in the box, a USB data acquisition card, an industrial computer and a signal output part; the signal input part includes a speed signal input and a mileage signal input, and the speed The input terminal of the signal input is connected with the speed control knob on the panel of the cabinet that outputs a 0-20mA DC current signal, and one output terminal of the speed signal input is connected with the speedometer through the signal output port on the panel of the cabinet. The other output end is connected with the USB data acquisition card; the USB data acquisition card is connected with the industrial computer and the signal output part respectively, and the signal output part is connected with the speedometer through the signal output port on the cabinet panel, and the industrial computer is programmed by software Input a pulse signal for the mileage signal of the signal input section. The industrial computer has its own battery and a miniature digital keyboard, has a touch screen, and is connected to the data output port on the panel of the cabinet. The box is made of aluminum alloy.

The interior of the cabinet is mainly divided into two parts, large and small. A panel is installed on the large partition. The panel is equipped with an industrial computer touch screen, power switch, power switch indicator light, data output port, signal output port and speed control knob. There are industrial computer body, USB data acquisition card, signal input part, signal output part and connecting lines, etc. The power switch and power switch indicator light are connected to the industrial computer; there is no panel in the small partition, and the signal transmission line is placed inside.

See Figure 2, operation interface description:

①The speed detection starts immediately after entering the detection interface, and the mileage test can be performed by clicking "Mileage Test";

② "Value collected by industrial computer" means the speed value collected by the industrial computer after turning the speed control knob to adjust the detected speedometer to a certain value;

③ "Instrument manual reading" means to manually read the value on the speedometer when the speed control knob is turned to adjust the speedometer to a certain value;

④ Click "Show Soft Keyboard" on the touch screen to input the manual reading on the speedometer into the column of "Manual Reading of Instrument";

⑤ Click "Confirm" in the soft keyboard, the industrial computer will automatically record the measurement data of this group, and display the time, measurement value, instrument value and error value;

⑥Select a set of wrong measurement data, and click the "Delete Record" column to delete it;

⑦Click "Up" and "Down" to view historical measurement data;

⑧Click "Report" to print out the measured data in the form of paper;

⑨Click "Exit" to exit the detection interface;

⑩Click "Shutdown" to shut down the industrial computer directly from the verification interface.

Use the concrete detection step of the utility model to be:

(1) Remove the speedometer from the locomotive console with a screwdriver, and disassemble the signal line connecting the locomotive to the speedometer;

(2) Turn on the testing equipment, start the power-on button of the industrial computer on the operation panel, turn on the power switch on the panel, and after turning on the machine, select to enter the locomotive speedometer detection interface on the touch screen;

(3) Take out the signal line from the small partition, connect one end to the signal input port of the speedometer, and connect the other end to the signal output port of the operation panel;

(4) Turn the speed control knob to adjust the speed to the preset value, that is, the value of the detected speedometer, read out the value of the detected speedometer, and input it into the column of "manual reading of the instrument" through the soft keyboard. At this time, the industrial computer collects When the standard speed value is reached, that is, "value collected by industrial computer", click "OK", and the industrial computer will automatically record the measurement information and perform error analysis;

(5) Click "Mileage Test" to observe whether the speedometer works, and select "Yes" or "No" in the newly pop-up dialog box "Is the odometer test result correct?", and the industrial computer will automatically record the measurement information;

(6) Repeat the above operations, and the industrial computer can record multiple sets of measurement data. After the detection is completed, the detection results can be dumped or printed through the USB interface.

The design of this device is a portable box structure. The box body is made of high-strength aluminum alloy material, which can cope with a variety of harsh working environments and ensure that the internal components are not easily damaged. When using, you should pay attention to the following points:

(1) In order to keep the equipment in good performance for a long time, it should avoid falling from a high place or being under heavy pressure;

(2) Before testing, pre-check that each component of the equipment can work normally to ensure that the testing is carried out smoothly;

(3) The operation of the man-machine interface should be done lightly with fingers, and it is strictly forbidden to hit the man-machine interface with force or hard objects, otherwise the interface will be damaged;

(4) After the test, the power switch on the industrial computer and the operation panel should be turned off, and the signal transmission line should be tidied up and put back into the small compartment in the box;

(5) The external positive and negative poles must not be directly connected, otherwise the switching power supply will be burned.

The utility model is light in weight and easy to carry, and maintenance personnel can directly take it to the locomotive, and then start testing, and immediately start checking the speedometer of another locomotive after use, and the efficiency is greatly improved.

Claims (5)

1. a kind of portable locomotive speedometer detection equipment is characterized in that: comprise a suitcase and place signal input part, USB data acquisition card, industrial computer and signal output part in its casing; Signal input part comprises speed signal input and Mileage signal input, the input end of the speed signal input is connected with the speed control knob on the box body panel, one output end of the speed signal input is connected with the speedometer through the signal output port on the box body panel, and the other end of the speed signal input One output port is connected with the USB data acquisition card; the USB data acquisition card is respectively connected with the industrial computer and the signal output part, and the signal output part is connected with the speedometer through the signal output port on the box body panel, and the industrial computer controls the mileage signal input . 2. The portable locomotive speedometer detection device as claimed in claim 1, characterized in that: said industrial computer has a touch screen and has its own battery. 3. The portable vehicle speedometer detection device as claimed in claim 1 or 2, characterized in that: said industrial computer has a miniature numeric keypad. 4. The portable locomotive speedometer detection device as claimed in claim 3, characterized in that: said industrial computer is connected to the data output port on the box body panel. 5. The portable vehicle speedometer testing device according to claim 1, characterized in that: the box is made of aluminum alloy. the

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