The invention relates to the technical field of engine detecting device, in particular to an aero-engine comprehensive testing system. The system comprises a data collecting device, a control device, an operation display device, an upper computer and a power supply. The data collecting device detects the main technical parameters of an engine, the control device intelligently controls the data collecting device, the upper computer analyzes and processes the main technical parameters, a PLC (programmable logic controller) is used for providing certain-frequency clock switching signals for the logical processing counting module in a speed tester, outputting sine wave voltage frequency according to a rotation speed sensor and controlling the logical processing counting module to achieve switching of high-speed counting and low-speed counting, and the corresponding counting mode can be intelligently switched to according to the taking off, operating and landing states of the engine of an aviation aircraft. By the system, variable-frequency rotation speed measuring of an aero-engine is achieved, and reliability and accuracy of rotation speed measuring is increased.

Aero-engine comprehensive testing system

The invention discloses an airplane porthole component performance test system comprising an industrial control computer, a programmable logic controller, an airplane porthole component test device, and an air source The industrial personal computer is used for being connected with the programmable logic controller, transmitting a pulse signal of controlling the airplane porthole component test device, and receiving a current signal, processed by the programmable logic controller, of the airplane porthole component test device The programmable logic controller is used for receiving a pulse signal whereby the industrial control computer controls the airplane porthole component test device, and receiving and processing the current signal from the airplane porthole component test device The air source is used for providing the airplane porthole component test device with air The airplane porthole component performance test system is capable of effectively simulating flight temperature and pressure parameters of an airplane, is capable of truly indicating the physical performance of airplane porthole glass during actual operation and the influence of component assembly upon the performance of the airplane porthole glass, is also capable of automatically intercepting and storing test data in performance test process into the industrial personal computer, and has an extensible test function

Airplane porthole component performance test system

The invention discloses an engine test parking protection system and a test bed measurement and control system with the engine test parking protection system The parking protection system comprises a first data acquisition module which is used for acquiring engine state parameters and test bed control parameters and transmitting the acquired parameter information to a PLC; and a second data acquisition module which is used for acquiring the engine state parameters and the test bed control parameters and transmitting the acquired parameter information to an industrial control computer The first data acquisition module and the second data acquisition module are connected with sensors used for parameter acquisition through a one-in two-out and three-terminal isolated signal isolation module The PLC and the industrial control computer independently perform parking protection on the engine test in a parallel way Complete parallel and independent engine parking protection is realized, engine test operation reliability and test bed signal fault analysis and troubleshooting efficiency are enhanced, protection parameter scanning frequency is accelerated and parking delay is reduced, and thus the protection parameter acquisition values in parking are enabled to be closer to the set value

Engine test parking protection system and test bed measurement and control system with engine test parking protection system

The invention discloses a marine diesel oil/LNG dual-fuel engine ECU hardware-in-loop simulation system, including an industrial control system and a PLC signal system An upper computer runs a dual fuel engine model sent to a lower computer via a USB bus The lower computer runs mutual conversion between USB data and RS485 data through a USB to RS485 module The USB to RS485 module is connected with an analog quantity output module and an OCROBOT microcontroller through an RS485 bus The OCROBOT microcontroller is connected with a PLC through an optical coupling isolator The PLC receives and processes current signals generated by the OCROBOT microcontroller and the analog quantity output module The PLC is connected with an Arduino microcontroller through a serial port communication bus The marine diesel oil/LNG dual-fuel engine ECU hardware-in-loop simulation system is advantaged by flexible usage, good expansibility and high stability, and the development difficulty is reduced at the same time

Marine diesel oil/LNG dual-fuel engine ECU hardware-in-loop simulation system

The invention discloses a simulator of an AXIe interface gas turbine accelerator executor, which relates to the simulation of the AXIe interface gas turbine accelerator executor and aims to solve the problem of bad simulating effect of an emulational accelerator executor simulator. The simulator comprises a gas turbine accelerator executor simulator, an upper computer, an AXIe interface and an RS422 interface, wherein the RS422 interface is used for realizing the process that the position, rotating speed and load of the accelerator executor are sent to an accelerator controller by the gas turbine accelerator executor simulator; the AXIe interface is used for realizing the process that the upper computer is communicated with the gas turbine accelerator executor simulator; the accelerator executor simulator is used for simulating the accelerator executor and obtaining the position, rotating speed and load of the accelerator executor in real time according to control signals of the accelerator controller; the upper computer is used for judging whether the accelerator executor is in a normal operating state, an overloading state or a failure state according to the position, rotating speed and load of the gas turbine accelerator executor. The simulator is used for detecting the accelerator controller.

Simulator of AXIe interface gas turbine accelerator executor

The invention discloses a measuring and controlling system for a single-cylinder engine testboard, which comprises an upper computer, an intelligent instrument, a PLC (programmable logic controller), a plurality of sensors and a first electric actuator, wherein the upper computer is respectively connected with the intelligent instrument and the PLC; the upper computer sets a stable judgment interval for the operational parameters of an engine and sets an alarming threshold value, and downloads online to the intelligent instrument; the intelligent instrument is respectively connected with the sensors and the first electric actuator, so as to obtain operational parameters of the engine at a monitoring point during the running process of a single cylinder engine; further the working state of the first electric actuator is adjusted, and an auxiliary system is controlled; the intelligent instrument is further connected with the PLC and used for conveying warning signals to the PLC; and the PLC gives an alarm for prompting according to the warning signals In the invention, through the application of the intelligent instrument, discrepancies caused by multitasking and processing speed of the upper computer can be overcome, task dispersion is achieved, and the reliability and the stability of the overall system are improved

Measuring and controlling system for single-cylinder engine testboard

The present invention provides a diesel engine connecting rod big end bearing bush temperature measurement device and method. The device comprises: an SAW (Surface Acoustic Wave) sensor installed on a diesel engine connecting rod, wherein the SAW sensor is configured to reflect temperature variation of a connecting rod bearing bush; a signal transceiver fixed at the external portion of a diesel engine body, wherein the signal transceiver is configured to control emission and receiving of electromagnetic wave signals with different frequencies of the SAW sensor and analyze temperature signals; and a signal transceiver antenna fixed at the internal portion of the diesel engine body, wherein the signal transceiver antenna is configured to emit the electromagnetic wave signals sent by the signal transceiver and receive the electromagnetic wave signals from the SAW sensor. According to the device provided by the invention, the SAW sensor is employed to reflect the temperature variation of the connecting rod bearing bush, and the diesel engine connecting rod big end bearing bush temperature measurement device has no wires or power supply, is convenient to install, high in reliability and good in maintenance, has no potential safety hazards and can be taken as a long-term monitoring device used for temperature monitoring of the connecting rod big end bearing bush.

Diesel engine connecting rod big end bearing bush temperature measurement device and method

The invention discloses a single-cylinder engine experiment measuring and controlling system with an optimization experiment function. The single-cylinder engine experiment measuring and controlling system comprises a master station, a data acquisition module, a logic control unit, a digital PID controller, an engine, a load control unit, a DoE application tool, test equipment, a DoE application tool port and an external device port, wherein the data acquisition module, the logic control unit, the digital PID controller, the engine and the load control unit are connected with the master station, and the DoE application tool port and the external device port are connected with the master station. The DoE application tool is connected with the master station through the DoE application tool port. The test equipment is connected with the master station through the external device port. According to the single-cylinder engine experiment measuring and controlling system, the integration function of the DoE application tool of the single-cylinder engine experiment measuring and controlling system, an automatic working condition operation function module and the self-diagnostic function of experimental data validity are provided, the basic and special measuring and controlling demand of single-cylinder engine experiment development is met, the degree of automation in the experiment process is enhanced, the working intensity of testers is lightened, and the effects of shortening development time and lowering development cost are achieved.

Single-cylinder engine experiment measuring and controlling system with optimization experiment function and measuring and controlling method

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Measuring and controlling system for single-cylinder engine testboard

Diesel engine connecting rod big end bearing bush temperature measurement device and method

Single-cylinder engine experiment measuring and controlling system with optimization experiment function and measuring and controlling method