RU2801051C1 - Stand for checking device for monitoring and recording fuel consumption on vehicle with diesel engine - Google Patents

Abstract

FIELD: testing equipment.

SUBSTANCE: testing stand for the device for monitoring and recording fuel consumption on a vehicle with a diesel engine contains a power supply unit, a computer unit in which a bench program is installed for testing the communication channels of the data acquisition unit, a diesel fuel pressure simulator, including a pressure setting press and a digital pressure gauge to control the pressure setting. The diesel fuel pressure simulator is connected to the diesel fuel quantity sensors of the tested device via branched flexible piping with flanges and power clamps to create a normalized effect on the sensitive elements of these sensors in order to check their operability, as well as to simultaneously check operability of the communication channels of the data collection unit with diesel fuel quantity sensors of the tested device, while in addition to the computer unit of the stand, an interface signal conversion unit is connected.

EFFECT: simultaneous check of operability of the diesel fuel quantity sensors and the communication channels between these sensors and the data collection unit included in the tested device, without using containers with diesel fuel, which reduces the overall dimensions of the stand and ensure fire safety during work.

1 cl, 1 dwg

Description

The invention relates to stands for testing equipment, namely, to stands for checking devices for monitoring and recording fuel consumption on traction vehicles and track machines of railway transport, as well as on other vehicles with a diesel engine.

Known stand for testing and calibrating elements of the on-board accounting system for diesel fuel, designed to test the characteristics of its elements. The stand allows you to calibrate the fuel level sensor and test the channels for measuring the fuel level by the on-board system. The stand includes a personal computer and a locomotive fuel tank simulator, which is a tank with bypass valves. To create an impact on the sensitive element of the fuel level sensor, the tank is filled with diesel fuel, raising the fuel level several times, then the fuel is drained, the fuel level value measured by the checked on-board fuel metering system is compared with the set value. The stand is also designed to test the channels for measuring the mass, density and temperature of the fuel. Tests are carried out using diesel fuel (see website www.aviskom.pro/products/view.php?ID=438).

The disadvantages of this stand is that during the tests flammable diesel fuel is used, which creates an increased fire hazard. The stand also includes a vehicle fuel tank simulator, which has large overall dimensions, which limits the possibility of placing the stand indoors.

A calibration complex IPK-3 is known, designed for preventive testing and testing of complexes for collecting and recording data and operating parameters of a vehicle with a diesel engine, in which fuel level sensors are used to measure diesel fuel consumption, made in the form of float magnetostrictive transducers (PMP). The IPK-3 complex is located in a metal case with connectors for connecting additional blocks and devices. The operation of the IPK-3 complex is controlled by a personal computer. In accordance with the control program, electrical input signals are received on the tested devices and the operating parameters of the locomotive are simulated, functional checks and troubleshooting are carried out. Information about the test results is displayed on the monitor and, if necessary, the test protocol is printed (see www.elmeh.ru/catalog/railway-transport/diagnostics-and-calibration/complex-span-ipk-3).

The disadvantage of the IPK-3 verification complex is that the operation of the fuel-measuring function of the complexes of means for collecting and recording data and operation parameters of a vehicle with a diesel engine is carried out without checking the operability of fuel level sensors.

The technical result of the invention is the creation of a stand that allows you to simultaneously check the performance of diesel fuel quantity sensors and communication channels of the data collection unit with diesel fuel quantity sensors, which are part of the tested device for monitoring and recording fuel consumption on a vehicle with a diesel engine, without the use of containers with diesel fuel, which will lead to a reduction in the overall dimensions of the stand, as well as ensure fire safety during work.

The specified technical result is achieved by the fact that in the stand for checking the device for monitoring and recording fuel consumption on a vehicle with a diesel engine, including a power supply unit, a computer unit in which a bench program is installed for testing communication channels of a data collection unit, a diesel fuel pressure simulator, including a press for setting pressure and a digital pressure gauge for controlling the set pressure, the computer unit is connected to the data collection unit of the tested device via an antenna capable of operating in three frequency bands (Wi-Fi/GSM/GPRS/Glonass), the diesel fuel pressure simulator is connected to the quantity sensors of diesel fuel of the device under test by means of a branched flexible hose with flanges and power clamps to create a normalized effect on the sensitive elements of these sensors in order to check their operability and simultaneously check the operability of the communication channels of the data collection unit with the sensors of the amount of diesel fuel of the device under test, in addition to the computer unit of the stand is connected interface signal conversion unit designed to transmit signals to the data acquisition unit of the device under test and protect it from impulse noise.

The essence of the invention is illustrated in the drawing.

The drawing shows a diagram of a bench for checking the device for monitoring and recording fuel consumption on a vehicle with a diesel engine (hereinafter referred to as the bench).

Stand 1 includes a power supply unit 2, from which the data acquisition unit 5 of the tested device 3 is powered, a computer unit 4 in which a bench program is installed for testing communication channels of the data acquisition unit 5 of the tested device 3, a diesel fuel pressure simulator 6, including a press 7 to set the pressure, and digital pressure gauge 8 to control the set pressure. The diesel fuel pressure simulator 6 is connected to the diesel fuel quantity sensors 9 via a branched flexible hose 10 with flanges and power clamps (not shown in the figure). In addition to the unit 4 of the computer stand 1 is connected to the unit 11 conversion of interface signals, designed to transmit signals to the unit 5 of the data collection of the tested device 3 and protect it from impulse noise. Block 4 of the computer of stand 1 is also connected to the block 5 of data collection of the tested device 3 via an antenna capable of operating in three frequency bands (Wi-Fi/GSM/GPRS/Glonass).

The declared stand works as follows.

Tested device 3 is connected to stand 1: computer unit 4 is connected using a LAN network cable and interface signal converter unit 11 with data acquisition unit 5 of tested device 3. Diesel fuel pressure simulator 6 is connected via flanges and power clamps of a flexible branched connection 10 with sensors 9 amount of diesel fuel. The power supply unit 2 is connected to the data collection unit 5 of the tested device 3. The power supply unit 2, the computer unit 4, the data collection unit 5 of the tested device 3 are turned on. -browser, set the address of the web interface in it, enter the login and password of the checked device 3, given in the technical documentation for it. Stand 1 is ready to go.

To check the operability of the data acquisition channel by the data collection unit 5 over the local area network (LAN), the local network is diagnosed using the Ping2 command line utility. The check is completed if the computer block 4 receives a response from the data collection block 5.

To check the operability of the radio channel for data transmission from the data collection unit 5 to the computer unit 4, the antenna 12 is placed in the zone of reliable reception of the Wi-Fi/GSM/GPRS signal. According to the status of the indicator in the window of the web-interface of the block 5 of data collection on the block 4 of the computer, the operability of the radio channel is determined.

Block 11 of the interface signal converter provides the possibility of transmitting a signal between the communication channels of the computer unit 4 and the data collection unit 5 of the tested device 3, which have different interfaces, as well as protection of the receiving channel of the data collection unit 5 from impulse noise. To check the operability of serial communication channels with external devices of the data collection unit 5 of the tested device 3, a bench program for testing communication channels is launched on the computer unit 4, simulating the transmission of signals from the on-board computer of the vehicle. Then, in the bench program, the channels for receiving data from external devices of the data collection unit 5 are sequentially selected, they are opened and their performance is checked. The operability of the selected channel is determined by the state of the indicator in the program for testing communication channels.

To simultaneously check the operability of the sensors 9 of the amount of diesel fuel and the operability of the communication channels of the sensors 9 of the amount of diesel fuel with the data collection unit 5 of the tested device 3, pressure is created using a press 7 and a digital pressure gauge 8 according to the test table given in the technical documentation for stand 1. Branched flexible the liner 10 is intended for hermetic connection of the sensors 9 of the amount of diesel fuel through flanges and clamps to the simulator 6 of the pressure of diesel fuel. The readings of the diesel fuel quantity sensors 9 are monitored in the web interface window of the data collection block 5 on the computer block 4 and compared with the normalized values of the fuel quantity in kilograms given in the test table in the technical documentation for stand 1. The check is performed if the readings of the quantity sensors 9 diesel fuel correspond to the normalized values of the amount of fuel given in the check table.

After the completion of the checks, the device under test 3 is disconnected from stand 1.

As block 4 of the computer can be used a personal computer or a laptop with a built-in Ethernet network card.

The DC power supply GPS-73030DD can be used as power supply 2.

As block 11 of the interface signal converter, a USB-RS485/RS232 converter of the CableExpert UAS111 type can be used.

Thus, the claimed stand will allow simultaneously checking the operability of the diesel fuel quantity sensors and the communication channels of the data collection unit with the diesel fuel quantity sensors, which are part of the checked device for monitoring and recording fuel consumption on a vehicle with a diesel engine, without the use of containers with diesel fuel, which will lead to a reduction in the overall dimensions of the stand, as well as ensure fire safety during work.

Claims (1)

A stand for testing a device for monitoring and recording fuel consumption on a vehicle with a diesel engine, including a power supply unit, a computer unit in which a bench program is installed for testing communication channels of the data acquisition unit, a diesel fuel pressure simulator, including a pressure setting press and a digital pressure gauge for control of the set pressure, the computer unit is connected to the data acquisition unit of the device under test by means of an antenna operating in three Wi-Fi/GSM/GPRS/Glonass frequency bands, characterized in that the diesel fuel pressure simulator is connected to the diesel fuel quantity sensors of the device under test by means of a branched flexible piping with flanges and power clamps to create a normalized effect on the sensitive elements of these sensors in order to check their operability and simultaneously check the operability of the communication channels of the data collection unit with the sensors of the amount of diesel fuel of the device under test, in addition to the computer unit of the stand, an interface signal conversion unit is connected for transmitting signals to the data acquisition unit of the tested device and protecting it from impulse noise.