CN117193247A - Automatic test system for electronic injection control unit of unmanned aerial vehicle engine - Google Patents
Automatic test system for electronic injection control unit of unmanned aerial vehicle engine Download PDFInfo
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- CN117193247A CN117193247A CN202311235179.4A CN202311235179A CN117193247A CN 117193247 A CN117193247 A CN 117193247A CN 202311235179 A CN202311235179 A CN 202311235179A CN 117193247 A CN117193247 A CN 117193247A
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Abstract
The invention relates to the technical field of electronic injection control engines, in particular to an automatic test system for an electronic injection control unit of an unmanned aerial vehicle engine, which comprises a power supply box, a signal box, an air pressure box, a touch integrated machine, a control unit and a network switch, wherein the power supply box is connected with the signal box; wherein the control unit comprises a control unit of a plurality of engines. The invention can test 8 electronic spray control units simultaneously, not only retains the manual test function, but also supports the automatic test function, can simultaneously meet the normal temperature test and the environment test of 8 electronic spray control units in an automatic test mode, can complete one-key test within 3 minutes, and generates an automatic test report.
Description
Technical Field
The invention relates to the technical field of electronic injection control engines, in particular to an automatic test system for an electronic injection control unit of an unmanned aerial vehicle engine.
Background
In the production acceptance process, the electronic control unit ECU needs to perform environment test such as normal temperature test, vibration, impact, high and low temperature work, high and low temperature storage, low air pressure, damp heat and the like, and the performance parameters of the electronic control unit ECU directly influence the working stability of the engine, so that the guarantee of the test precision is particularly important. In addition, in the production, debugging and acceptance process of the existing electronic injection control unit, debugging personnel are required to set in a matching mode at the atmospheric temperature and the temperature and resistance of the cylinder, a rotating speed signal generator is set, and links such as oil injection pulse width oscilloscope setting, atmosphere comprehensive tester setting, test record data filling and the like are time-consuming in a large amount of manual debugging, so that the production, acceptance period of the ECU is greatly influenced.
And the cost of test equipment such as an atmosphere comprehensive tester, a signal generator, an oscilloscope and the like is high, and the test state is random connection and lacks of integration level. Particularly, the testing capability of the manual debugging mode can only test one ECU at a time, the testing efficiency is low, and the mass production progress of the electronic injection control unit is severely restricted.
Disclosure of Invention
In order to solve the technical problems, the method mainly aims at the technical problems that only one ECU can be tested at a time through the testing capability of a manual debugging mode, the testing efficiency is low, and the mass production progress of the electronic injection control unit is seriously restricted. The invention provides an automatic test system for an electronic injection control unit of an unmanned aerial vehicle engine, which can test 8 electronic injection control units simultaneously, not only maintains a manual test function, but also supports an automatic test function, can simultaneously meet the normal temperature test and the environment test of the 8 electronic injection control units in an automatic test mode, can complete one-touch test within 3 minutes, and generates an automatic test report.
The invention provides an automatic test system for an electronic injection control unit of an unmanned aerial vehicle engine, which is used for automatically testing electronic injection control units of a plurality of unmanned aerial vehicle engines and comprises the following components: the system comprises a power supply box, a signal box, an air pressure box and a network switch;
the power supply box, the signal box and the air pressure box are in communication connection with the plurality of electronic spray control units through the network switch;
the power supply box is used for supplying power to and controlling the plurality of electronic injection control units;
the signal box is used for simulating input signals required by the test of the plurality of electronic injection control units and measuring output signals of the electronic injection control units;
the air pressure box is used for simulating and controlling air pressure height signals of the plurality of electronic injection control units;
the control unit is used for communication connection and data processing among the modules;
each electronic injection control unit comprises a power interface, a signal interface and an air path interface;
the power interface is connected with the power box through a cable, the signal interface is connected with the signal box in a communication way, and the air channel interface is communicated with the air pressure box through an air pressure pipeline.
Preferably, the power box comprises a programmable power module, a power output control unit and a power acquisition module;
the programmable power supply module is in communication connection with each electronic spray control unit by adopting a programmable voltage-regulating power supply;
the power output control unit realizes control of each channel by adopting a multi-path relay board card which is in communication connection with each electronic spray control unit;
and the power acquisition module is used for testing the full-load working current and power of each electronic injection control unit.
The signal box comprises a cylinder temperature simulation module, an atmospheric temperature simulation module, a throttle valve signal output module, a rotating speed signal output module and a pulse width acquisition module;
the cylinder temperature simulation module is used for providing cylinder temperature resistance values under different temperature values for each electronic injection control unit;
the atmospheric temperature simulation module is used for providing an atmospheric temperature resistance value under different temperature values for each electronic injection control unit;
the throttle valve signal output module is used for controlling the throttle valve opening analog voltage signal of the engine, each electronic injection control unit issues a command to the module through the switch and the serial server, and the module outputs a corresponding voltage value;
the rotating speed signal output module is used for outputting a plurality of paths of engine rotating speed analog signals;
and the pulse width acquisition module is used for testing the oil injection pulse width of each electronic injection control unit and carrying out oil injection pulse width acquisition and measurement.
Preferably, the signal box further comprises a communication function module, and the communication function module is used for being in communication connection with each electronic injection control unit.
Preferably, the air pressure box comprises a negative pressure proportional valve, a positive pressure pump, a negative pressure pump, an air bottle, an electromagnetic valve, an air pressure sensor and a communication voltage output module;
the output interfaces of the positive pressure pump and the negative pressure pump are respectively connected to a positive pressure air inlet and a negative pressure air inlet of the negative pressure proportional valve through air pipes;
the negative pressure proportional valve output interface is connected with the input end of the gas cylinder;
each channel is provided with an independent electromagnetic valve for controlling a pagoda interface for external output;
the air pressure sensor is used for measuring the air pressure value of the output end of the air cylinder, serving as a measured value of the air pressure regulating loop and feeding back the measured value to each electronic injection control unit;
each electronic injection control unit sends an instruction to a communication voltage output module, the communication voltage output module outputs corresponding voltage to a signal control end of a negative pressure proportional valve, and the negative pressure proportional valve is adjusted to the required pressure by opening/closing the opening of a positive and negative pressure air inlet.
Preferably, each electronic injection control unit further comprises an electronic injection data receiving module, a power acquisition module, an environment test module, a pulse width acquisition module, an analog output module, a pneumatic valve control module, a power-on control module, a manual test module, a communication module, a temperature test module, a system initialization module, an oil pump control module, a rotating speed control module, an automatic test module and an automatic test recording module which are in communication connection.
Preferably, the touch integrated machine is used for human-computer interaction interface configuration design; and the printer is connected with the network switch in a networking communication way.
Preferably, the touch integrated machine comprises an initial interface, a power control interface, a comprehensive test interface, a temperature test interface and an oil injection pulse width test interface, and is used for man-machine data information interaction; the initial interface comprises test parameter input, system initialization, environment test selection and report printout, wherein the environment test comprises vibration, impact, high-low temperature work, high-low temperature storage, low air pressure, damp heat and other tests.
Preferably, the plurality of electronic injection control units comprises at least 8 engine electronic injection control units.
Preferably, all the boxes and the unit modules are independently powered and are connected with the 220V alternating current power strip through alternating current power lines.
The invention has at least the following beneficial effects:
the invention provides an automatic test system for an electronic injection control unit of an unmanned aerial vehicle engine, which can test a plurality of electronic injection control units simultaneously, not only maintains a manual test function, but also supports an automatic test function, can simultaneously meet the normal temperature test and the environment test of the plurality of electronic injection control units in an automatic test mode, can complete one-touch test within 3 minutes, and generates an automatic test report.
The invention adopts a 1-piece ZQWL-EthRS-E8 serial server (8-path RS422 serial port), and is communicated with a control unit through a switch, the control unit is transmitted to the serial server through an Ethernet, and the serial server is communicated with 8 electronic spray control units through the RS422 serial port and a test cable.
Drawings
Fig. 1 is a block diagram of the overall design of the present invention.
Fig. 2 is a schematic structural design of the present invention.
Fig. 3 is a block diagram of a power box control scheme of the present invention.
Fig. 4 is a block diagram of a signal box control scheme of the present invention.
FIG. 5 is a block diagram of a pneumatic box control scheme of the present invention.
FIG. 6 is a flow chart of the software functions of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide an automatic test system for an unmanned aerial vehicle engine electronic injection control unit, which can test 8 electronic injection control units simultaneously, not only maintains a manual test function, but also supports an automatic test function, can simultaneously meet the normal-temperature test and the environment test of the 8 electronic injection control units in an automatic test mode, can complete one-touch test within 3 minutes, and generates an automatic test report.
The invention provides an automatic test system for an electronic injection control unit of an unmanned aerial vehicle engine, which is used for automatically testing the electronic injection control units of a plurality of unmanned aerial vehicle engines and comprises a power supply box, a signal box, an air pressure box, a touch integrated machine and a network switch;
the power supply box, the signal box, the air pressure box and the touch integrated machine are all in communication connection with the plurality of electronic spray control units through the network switch;
the power supply box is used for supplying power to and controlling the plurality of electronic injection control units;
the signal box is used for simulating input signals required by the test of the plurality of electronic injection control units and measuring output signals of the electronic injection control units;
the air pressure box is used for simulating and controlling air pressure height signals of the plurality of electronic injection control units;
the control unit is used for communication connection and data processing among the modules;
each electronic injection control unit comprises a power interface, a signal interface and an air path interface;
the power interface is connected with the power box through a cable, the signal interface is connected with the signal box in a communication way, and the air channel interface is communicated with the air pressure box through an air pressure pipeline.
The touch integrated machine is used for designing the configuration of the human-computer interaction interface;
the control unit is used for communication connection and data processing among the modules.
The system also comprises a printer which is connected with the network switch in a networking communication way. The plurality of engine control units comprises at least 8 engine control units.
In this embodiment, an automatic test system for an electronic injection control unit of an unmanned aerial vehicle engine is provided, and the automatic test system comprises a power supply box, a signal box, an air pressure box, a touch integrated machine, a control unit, a printer, a network switch, a test cable and an air pressure pipeline. The power supply box, the signal box, the air pressure box, the control unit and the touch all-in-one machine are connected to the network switch through Ethernet lines to carry out networking communication. The 8 Engine Control Units (ECU) are connected with corresponding interfaces in the automatic test system of the electronic injection control unit through test cables and air pressure pipelines,
each electronic injection control unit comprises a power interface, a signal interface and an air path interface;
the power interface is connected with the power box through a cable, the signal interface is connected with the signal box in a communication way, and the air channel interface is communicated with the air pressure box through an air pressure pipeline.
All the box bodies and the unit modules adopt independent power supply and are connected with a 220V alternating current power supply socket through alternating current power supply wires. The power box is used for supplying power and controlling 8 ECU power supplies; the signal box is used for simulating input signals required by the test of the electronic injection control unit and measuring output signals of the electronic injection control unit; the air pressure box is used for simulating and controlling air pressure height signals of the electronic injection control unit; the touch integrated machine is used for designing the configuration of the human-computer interaction interface; the control unit is used for communication connection and data processing among the modules.
According to the invention, the power box comprises a programmable power module, a power output control unit and a power acquisition module;
the programmable power supply module adopts a programmable voltage-regulating power supply and is in communication connection with the control unit;
the power output control unit is used for realizing control of each channel by adopting a multi-path relay board card which is in communication connection with the control unit;
and the power acquisition module is used for testing the full-load working current and power of the plurality of engine control units.
In this embodiment, the power box includes a programmable power module, a power output control module, and a power acquisition module. The programmable power supply module adopts a programmable voltage regulating module to carry out serial port communication with the control unit through the Ethernet-to-485 module so as to realize the adaptability test of the ECU power supply voltage of +18V to +32V; the power output control module adopts 8 paths of relay boards to realize control of each channel, the 8 paths of relay boards and the control unit are communicated through the Ethernet to 485 module, and the control button is powered on by touching an interface of the integrated machine to realize the control of the functions of simultaneously powering on and powering off a plurality of electronic injection control units and independently powering on and powering off a single electronic injection control unit; the power acquisition module and the control unit are communicated through the Ethernet-to-485 module in serial port, 8 paths of ECU working voltage, working current, power and other parameters are acquired and transmitted to the touch integrated machine interface for display, and meanwhile, in order to test the driving capability of the ECU oil pump, each channel adopts a mode that an oil pump simulation load is independently connected, and the full-load working current and power of the ECU are tested through the power acquisition module, so that the driving capability test of the ECU oil pump is realized.
The signal box comprises a cylinder temperature simulation module, an atmospheric temperature simulation module, a throttle valve signal output module, a rotating speed signal output module and a pulse width acquisition module;
the cylinder temperature simulation module is used for providing cylinder temperature resistance values under different temperature values for the control unit;
the atmospheric temperature simulation module is used for providing atmospheric temperature resistance values under different temperature values for the control unit;
the throttle valve signal output module is used for controlling the throttle valve opening analog voltage signal of the engine, the control unit issues a command to the module through the switch and the serial server, and the module outputs a corresponding voltage value;
the rotating speed signal output module is used for outputting a plurality of paths of engine rotating speed analog signals;
and the pulse width acquisition module is used for testing the oil injection pulse width of the control unit and acquiring and measuring the oil injection pulse width.
The signal box also comprises a communication function module which is used for being in communication connection with the control unit.
In this embodiment, the signal box is used as a tooling signal core processing unit and comprises a control unit module, a cylinder temperature simulation module, an atmospheric temperature simulation module, a throttle valve signal output module, a rotating speed signal output module, a pulse width acquisition module and the like. The core control unit adopts S71500PLC configuration control program to establish data communication with other modules through internal integrated TCP communication resources.
The serial port communication function test adopts 8 paths of RS422 communication, adopts 1 ZQWL-EthRS-E8 serial port servers (8 paths 422), communicates with the control unit through the switch, the control unit transmits the data to the serial port servers through the Ethernet, the serial port servers send the data to the electronic spray control unit through the RS422 serial port, and the electronic spray control unit processes the data and feeds back the output value to the control unit through the serial port servers.
The cylinder temperature simulation module is used for providing cylinder temperature resistance values under different temperature values for the ECU, realizing the cylinder temperature function acquisition test of 8 point positions of 4 paths of cylinder temperatures of the ECU, and the control unit issues instructions to the resistance board card through the switch and the serial server, and the resistance board outputs corresponding resistance values to simulate the cylinder temperature.
The atmospheric temperature simulation module is used for providing the atmospheric temperature resistance values under different temperature values for the ECU, realizing the acquisition and test of the atmospheric temperature functions of 7 point positions of the 1 path of the atmospheric temperature of the ECU, and the control unit sends instructions to the resistance board card through the exchanger and the serial port server, and the resistance board outputs corresponding resistance values to simulate the atmospheric temperature.
The throttle valve signal output module adopts an 8-path analog quantity isolation output module to realize 8-path voltage output, is used for controlling the throttle valve opening analog voltage signal of the engine, and the control unit issues instructions to the module through the switch and the serial server, and the module outputs corresponding voltage values.
The rotating speed signal output module adopts a BNG-FB16 signal board card to realize 8 paths of engine rotating speed analog signal output, the rotating speed analog signal is a sine signal, and the larger the frequency value of the sine signal is, the larger the rotating speed value is. The BNG-FB16 signal generating board card adopts 485 communication mode, and the control unit issues instructions to the signal generating board card through the switch and the serial port server, and the signal generating board card outputs sine signals with corresponding frequencies.
The pulse width acquisition module adopts a PSA-P1-RS485 module to acquire and measure the pulse width of engine fuel injection, and a single PSA-P1-RS485 module has 4 paths of pulse width acquisition functions, each ECU has two paths of pulse width channels, and 4 blocks are adopted to realize 16 paths of pulse width acquisition. The PSA-P1-RS485 pulse width acquisition module uses 485 communication mode, the control unit communicates with the module through the exchanger and the serial port server, and the touch integrated machine displays the acquired pulse width data.
According to the invention, the air pressure box comprises a negative pressure proportional valve, a positive pressure pump, an air bottle, an electromagnetic valve, an air pressure sensor and a communication voltage output module;
the output interfaces of the positive pressure pump and the negative pressure pump are respectively connected to a positive pressure air inlet and a negative pressure air inlet of the negative pressure proportional valve through air pipes;
the negative pressure proportional valve output interface is connected with the input end of the gas cylinder;
each channel is provided with an independent electromagnetic valve for controlling a pagoda interface for external output;
the air pressure sensor is used for measuring the air pressure value of the output end of the air cylinder, serving as a measured value of the air pressure regulating loop and feeding back to the control unit;
the control unit sends an instruction to the communication voltage output module, the communication voltage output module outputs corresponding voltage to the signal control end of the negative pressure proportional valve, and the negative pressure proportional valve adjusts the required pressure by opening/closing the opening of the positive and negative pressure air inlets.
In this embodiment, the air pressure tank includes a negative pressure proportional valve, a positive and negative pressure pump, and an air cylinder for providing negative pressure for the ECU to simulate different air pressure heights. The positive pressure pump and the negative pressure pump are matched with each other, the output interfaces of the pumps are respectively connected to the positive pressure air inlet and the negative pressure air inlet of the negative pressure proportional valve through air pipes, the rapid adjustment of different air pressure is realized, and the flow of the selected pump is regulated faster than the atmospheric pressure. The negative pressure proportional valve is controlled by voltage, and different voltage values correspond to different air pressure acquisition conversion values. The negative pressure proportional valve output interface is connected with the input end of the gas cylinder, and the gas cylinder is used as a buffer container, so that the stability of different air pressure value testing processes is ensured. The control unit sends a command to the negative pressure proportional valve through the exchanger and the net port 485, and the negative pressure proportional valve is adjusted to the required pressure by opening/closing the positive and negative pressure air inlets inside. Each channel is provided with an independent electromagnetic valve for controlling the pagoda interface which outputs outwards. When 8 ECUs are not connected at the same time, the control unit controls the corresponding unconnected channel electromagnetic valves to be closed so as to keep the whole air pressure loop in a closed state.
The control unit comprises an electronic injection data receiving module, a power acquisition module, an environment test module, a pulse width acquisition module, an analog output module, a pneumatic valve control module, a power-on control module, a manual test module, a communication module, a temperature test module, a system initialization module, an oil pump control module, a rotating speed control module, an automatic test module and an automatic test recording module which are in communication connection.
The touch integrated machine comprises an initial interface, a power control interface, a comprehensive test interface, a temperature test interface and an oil injection pulse width test interface, and is used for man-machine data information interaction; the initial interface comprises test parameter input, system initialization, environment test selection and report printout, wherein the environment test comprises vibration, impact, high-low temperature work, high-low temperature storage, low air pressure, damp heat and other tests.
The invention provides an operation method of an automatic test system of an unmanned aerial vehicle electronic injection control unit, which comprises the following steps:
step a, a manual test is carried out,
in the manual test mode, the manual test is connected with the engine electronic injection control unit through a test cable and an air pressure pipeline, and the manual test is selected on a man-machine interaction interface, so that ECU test items can be tested one by one, and the mode test capability is that 8 ECUs are tested simultaneously. Specific test items include: and (3) manually testing the rotating speed, the opening degree of a throttle valve, the atmospheric pressure, the air temperature, the air cylinder temperature and the oil injection precision.
In the step a, the manual rotation speed test step comprises the following steps: clicking a 'comprehensive interface' button on a task bar at the lowest part of any interface to enter a comprehensive test interface, selecting a corresponding rotating speed value button on a rotating speed bar, and simultaneously displaying 8 ECU rotating speed measured values on a rotating speed IO output domain.
In the step a, the throttle opening manual testing step is as follows: clicking a 'comprehensive interface' button on a task bar at the lowest part of any interface to enter a comprehensive test interface, selecting a corresponding throttle opening value button on a throttle opening column, and simultaneously displaying 8 ECU throttle opening measured values on a throttle opening IO output domain.
In step a, the atmospheric pressure manual test step is: the method comprises the steps of connecting an ECU atmospheric pressure test interface to be tested through an air pipe, clicking a pneumatic pump on button on an oil injection test interface, clicking a pneumatic valve full on button (note: when the number of EUs connected is smaller than 8, only corresponding channel pneumatic valves are opened, other channel electromagnetic valves are closed to ensure the air tightness in the test process), clicking a comprehensive interface button to enter the comprehensive test interface, selecting a corresponding atmospheric pressure value button on an atmospheric pressure column, and simultaneously displaying 8 ECU atmospheric pressure measurement values on an atmospheric pressure IO output domain.
In the step a, the manual atmospheric temperature test step is as follows: clicking a temperature interface button on the lowest taskbar of any interface to enter a temperature test interface, selecting a corresponding atmospheric temperature value button on an atmospheric temperature column, and simultaneously displaying 8 ECU atmospheric temperature measurement values on an atmospheric temperature IO output domain.
In the step a, the manual testing of the cylinder temperature comprises the following steps: clicking a temperature interface button on the lowermost taskbar of any interface to enter a temperature test interface, firstly selecting a cylinder temperature number to be tested on a cylinder temperature bar, then clicking a corresponding cylinder temperature value button, and simultaneously displaying 8 ECU cylinder temperature measured values on a cylinder temperature IO output field.
In the step a, the manual testing step of the oil injection precision is as follows: the oil injection precision is required to be tested under the conditions that the atmospheric pressure is 97kPa and the atmospheric temperature is 0 ℃, a 'oil injection interface' button is clicked on a task bar at the lowest part of any interface to enter an oil injection test interface, and a corresponding oil injection pulse width button is selected, wherein the 7.8ms corresponding rotating speed value is 1500rpm and the oil injection pulse width value under the condition that the throttle opening is 46 degrees; 7.2ms is corresponding to the oil injection pulse width value under the condition that the rotating speed value is 3500rpm and the throttle opening is 46 degrees; and 6.0ms corresponds to a fuel injection pulse width value under the condition that the rotating speed value is 6500rpm and the throttle opening is 46 degrees. 8 ECU first-path fuel injection time communication measured values can be displayed simultaneously in the fuel injection time 1 output domain, and 8 ECU second-path fuel injection time communication measured values can be displayed simultaneously in the fuel injection time 2 output domain. 8 ECU first-path oil injection pulse width measurement module measurement values can be displayed at the same time in a pulse width 1 output domain, and 8 ECU second-path oil injection pulse width measurement module measurement values can be displayed at the same time in a pulse width 2 output domain; the difference value between the measured value of the first path of oil injection communication of 8 ECUs and the measured value of the oil injection pulse width measuring module can be displayed at the same time in the oil injection precision 1 output domain, and the difference value between the measured value of the second path of oil injection communication of 8 ECUs and the measured value of the oil injection pulse width measuring module can be displayed at the same time in the oil injection precision 2 output domain.
Step b, automatic test is carried out,
in the automatic test mode, the test system can synchronously test each test item, the automatic test time is 2 minutes, each sub-interface can be sequentially switched to observe test data in the automatic test process, the background of the automatic test program can automatically record data results, and the automatic test button is flashing green after the automatic test is completed. At the moment, a 'print report' button is clicked, a PDF format data report is automatically generated, the form format is consistent with the check acceptance form, and the data can be directly printed out through a connecting printer to be used as the ECU to submit the acceptance data.
In step b, the automatic test is specifically implemented as follows: connecting an ECU and a device cable, inputting corresponding ECU numbers at an initial interface, clicking a 'system initialization' button, completing the functions of 'ECU powering-on, triggering communication energy, opening a positive pressure pump and a negative pressure pump, opening an electromagnetic valve, setting atmospheric pressure to be an initial air pressure value' and the like by one key during system initialization, clicking an 'automatic test' button after a communication state indicator light turns green, entering automatic test, clicking a printing report button after the automatic test button flashes green, and outputting a test result.
The automatic test system of the unmanned aerial vehicle electronic injection control unit provided by the invention not only has a manual test function of each test index of 8 ECU normal temperature tests, but also can automatically and simultaneously perform the automatic one-key test of the 8 ECU normal temperature tests and the environment tests, and output and print corresponding test reports.
The following specifically describes a specific scheme of an automatic test system for an electronic injection control unit of an unmanned aerial vehicle engine.
Referring to fig. 1-2, the automatic testing system for the electronic injection control unit of the unmanned aerial vehicle engine provided by the embodiment adopts a 28U standard cabinet (19 inches) to integrate each module, and comprises a power supply box, a signal box, an air pressure box, a touch integrated machine, a control unit, a printer, a network switch, a testing cable and an air pressure pipeline. The power supply box, the signal box, the air pressure box, the control unit and the touch all-in-one machine are all connected to the network switch through Ethernet wires for networking communication, the 8 Engine Control Units (ECU) are connected with the test system through test cables and air pressure pipelines, all the box bodies and the unit modules are independently powered, and are connected with the 220V alternating current power supply socket through alternating current power supply wires. The power box is used for supplying power and controlling 8 ECU power supplies; the signal box is used for simulating input signals required by the test of the electronic injection control unit and measuring output signals of the electronic injection control unit; the air pressure box is used for simulating and controlling air pressure height signals of the electronic injection control unit; the touch integrated machine is used for designing the configuration of the human-computer interaction interface; the control unit is used for communication connection and data processing among the modules.
Referring to fig. 3, the power box includes a programmable power module, a power output control module, and a power acquisition module. The programmable power supply module adopts a programmable voltage regulating module to carry out serial port communication with the control unit through the Ethernet-to-485 module so as to realize the adaptability test of the ECU power supply voltage of +18V to +32V; the power output control module adopts 8 paths of relay boards to realize control of each channel, the 8 paths of relay boards and the control unit are communicated through the Ethernet to 485 module, and the control button is powered on by touching an interface of the integrated machine to realize the control of the functions of simultaneously powering on and powering off a plurality of electronic injection control units and independently powering on and powering off a single electronic injection control unit; the power acquisition module and the control unit are communicated through the Ethernet-to-485 module in serial port, 8 paths of ECU working voltage, working current, power and other parameters are acquired and transmitted to the touch integrated machine interface for display, and meanwhile, in order to test the driving capability of the ECU oil pump, each channel adopts a mode that an oil pump simulation load is independently connected, and the full-load working current and power of the ECU are tested through the power acquisition module, so that the driving capability test of the ECU oil pump is realized.
Referring to fig. 4, the signal box is used as a tooling signal core processing unit and comprises a control unit module, a cylinder temperature simulation module, an atmospheric temperature simulation module, a throttle valve signal output module, a rotating speed signal output module, a pulse width acquisition module and the like. The core control unit adopts S71500PLC configuration control program to establish data communication with other modules through internal integrated TCP communication resources.
The serial port communication function test adopts 8 paths of RS422 communication, adopts 1 ZQWL-EthRS-E8 serial port servers (8 paths 422), communicates with the control unit through the switch, the control unit transmits the data to the serial port servers through the Ethernet, the serial port servers send the data to the electronic spray control unit through the RS422 serial port, and the electronic spray control unit processes the data and feeds back the output value to the control unit through the serial port servers. When in actual test, the equipment test cable is connected first, the communication connection button is clicked on the initial interface, and after the communication is established, the interface communication indicator lamp flashes green to represent that the communication connection between the test system and the ECU is established.
The cylinder temperature simulation module is used for providing cylinder temperature resistance values under different temperature values for the ECU, realizing the cylinder temperature function acquisition test of 8 point positions of 4 paths of cylinder temperatures of the ECU, and the control unit issues instructions to the resistance board card through the switch and the serial server, and the resistance board outputs corresponding resistance values to simulate the cylinder temperature. The atmospheric temperature simulation module is used for providing the atmospheric temperature resistance values under different temperature values for the ECU, realizing the acquisition and test of the atmospheric temperature functions of 7 point positions of the 1 path of the atmospheric temperature of the ECU, and the control unit sends instructions to the resistance board card through the exchanger and the serial port server, and the resistance board outputs corresponding resistance values to simulate the atmospheric temperature.
The throttle valve signal output module adopts an 8-path analog quantity isolation output module to realize 8-path voltage output, is used for controlling the throttle valve opening analog voltage signal of the engine, and the control unit issues instructions to the module through the switch and the serial server, and the module outputs corresponding voltage values.
The rotating speed signal output module adopts a BNG-FB16 signal board card to realize 8 paths of engine rotating speed analog signal output, the rotating speed analog signal is a sine signal, and the larger the frequency value of the sine signal is, the larger the rotating speed value is. The BNG-FB16 signal generating board card adopts 485 communication mode, and the control unit issues instructions to the signal generating board card through the switch and the serial port server, and the signal generating board card outputs sine signals with corresponding frequencies.
The pulse width acquisition module adopts a PSA-P1-RS485 module to acquire and measure the pulse width of engine fuel injection, and a single PSA-P1-RS485 module has 4 paths of pulse width acquisition functions, each ECU has two paths of pulse width channels, and 4 blocks are adopted to realize 16 paths of pulse width acquisition. The PSA-P1-RS485 pulse width acquisition module uses 485 communication mode, the control unit communicates with the module through the exchanger and the serial port server, and the touch integrated machine displays the acquired pulse width data.
Referring to fig. 5, the air pressure tank includes a negative pressure proportional valve, a positive and negative pressure pump, and an air cylinder for providing negative pressure to the ECU to simulate different air pressure heights. The positive pressure pump and the negative pressure pump are matched with each other, the output interfaces of the pumps are respectively connected to the positive pressure air inlet and the negative pressure air inlet of the negative pressure proportional valve through air pipes, the rapid adjustment of different air pressure is realized, and the flow of the selected pump is regulated faster than the atmospheric pressure. The negative pressure proportional valve is controlled by voltage, and different voltage values correspond to different air pressure acquisition conversion values. The negative pressure proportional valve output interface is connected with the input end of the gas cylinder, and the gas cylinder is used as a buffer container, so that the stability of different air pressure value testing processes is ensured. The control unit sends a command to the negative pressure proportional valve through the exchanger and the net port 485, and the negative pressure proportional valve is adjusted to the required pressure by opening/closing the positive and negative pressure air inlets inside. Each channel is provided with an independent electromagnetic valve for controlling the pagoda interface which outputs outwards. When 8 ECUs are tested at different time, the control unit controls the electromagnetic valve of the unconnected channel to be closed so as to keep the whole air pressure loop in a closed state. The air pressure test and regulation process is a closed-loop control process, a corresponding air pressure value is clicked on a touch screen 'comprehensive test interface' - 'atmospheric pressure' test column, the air pressure value is used as a set value of an air pressure regulation module of the control unit, the air pressure value is converted into a voltage control output value corresponding to a 485-conversion voltage output module through digital-analog conversion, closing and opening of a positive and negative pressure air inlet interface of the negative pressure proportional regulating valve are controlled, and an air pressure sensor is used for measuring an air pressure value at an output end of an air cylinder to be used as a measured value of an air pressure regulation loop and fed back to the control unit. And controlling the voltage output value to be continuously increased or decreased according to the difference value between the air pressure set value and the air pressure measured value of the closed loop, so that the final air pressure output value is stabilized within the set value error range. The length of the adjustment process depends on the flow of the positive and negative pressure pump and the accuracy of the given air pressure error.
Referring to fig. 6, the software design of the automatic test system of the electronic injection control unit of the unmanned aerial vehicle engine provided by the invention is developed through the configuration environment of a blog, and comprises a three-layer design architecture of a presentation layer, a functional layer and a data layer. The representation layer is designed for human-computer interaction interfaces and comprises an initial interface, a power supply test interface, a comprehensive test interface and an oil injection test interface; the functional layer corresponds to each test functional item of the ECU and comprises a communication function test, a fuel injection test, a cylinder temperature test, an atmospheric temperature test, a throttle opening test, an atmospheric pressure test, a rotating speed test and an oil pump test; the data layer comprises functions of communication protocol data analysis, automatic test data recording, data result qualification judgment, test report generation and the like.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. An unmanned aerial vehicle engine electronic injection control unit automatic test system for to many unmanned aerial vehicle engine electronic injection control unit automatic test, its characterized in that includes: the system comprises a power supply box, a signal box, an air pressure box and a network switch;
the power supply box, the signal box and the air pressure box are in communication connection with the plurality of electronic spray control units through the network switch;
the power supply box is used for supplying power to and controlling the plurality of electronic injection control units;
the signal box is used for simulating input signals required by the test of the plurality of electronic injection control units and measuring output signals of the electronic injection control units;
the air pressure box is used for simulating and controlling air pressure height signals of the plurality of electronic injection control units;
the control unit is used for communication connection and data processing among the modules;
each electronic injection control unit comprises a power interface, a signal interface and an air path interface;
the power interface is connected with the power box through a cable, the signal interface is connected with the signal box in a communication way, and the air channel interface is communicated with the air pressure box through an air pressure pipeline.
2. The unmanned aerial vehicle engine electronic spray control unit automatic test system of claim 1, wherein,
the power box comprises a programmable power module, a power output control unit and a power acquisition module;
the programmable power supply module is in communication connection with each electronic spray control unit by adopting a programmable voltage-regulating power supply;
the power output control unit realizes control of each channel by adopting a multi-path relay board card which is in communication connection with each electronic spray control unit;
and the power acquisition module is used for testing the full-load working current and power of each electronic injection control unit.
3. The automatic test system of an unmanned aerial vehicle engine electronic injection control unit according to claim 1, wherein the signal box comprises a cylinder temperature simulation module, an atmospheric temperature simulation module, a throttle valve signal output module, a rotating speed signal output module and a pulse width acquisition module;
the cylinder temperature simulation module is used for providing cylinder temperature resistance values under different temperature values for each electronic injection control unit;
the atmospheric temperature simulation module is used for providing an atmospheric temperature resistance value under different temperature values for each electronic injection control unit;
the throttle valve signal output module is used for controlling the throttle valve opening analog voltage signal of the engine, each electronic injection control unit issues a command to the module through the switch and the serial server, and the module outputs a corresponding voltage value;
the rotating speed signal output module is used for outputting a plurality of paths of engine rotating speed analog signals;
and the pulse width acquisition module is used for testing the oil injection pulse width of each electronic injection control unit and carrying out oil injection pulse width acquisition and measurement.
4. The unmanned aerial vehicle engine electronic spray control unit automatic test system of claim 3, wherein the signal box further comprises a communication function module for communication connection with each electronic spray control unit.
5. The automatic test system of an unmanned aerial vehicle engine electronic injection control unit according to claim 2, wherein the air pressure tank comprises a negative pressure proportional valve, a positive and negative pressure pump, an air bottle, an electromagnetic valve, an air pressure sensor and a communication voltage output module;
the output interfaces of the positive pressure pump and the negative pressure pump are respectively connected to a positive pressure air inlet and a negative pressure air inlet of the negative pressure proportional valve through air pipes;
the negative pressure proportional valve output interface is connected with the input end of the gas cylinder;
each channel is provided with an independent electromagnetic valve for controlling a pagoda interface for external output;
the air pressure sensor is used for measuring the air pressure value of the output end of the air cylinder, serving as a measured value of the air pressure regulating loop and feeding back the measured value to each electronic injection control unit;
each electronic injection control unit sends an instruction to a communication voltage output module, the communication voltage output module outputs corresponding voltage to a signal control end of a negative pressure proportional valve, and the negative pressure proportional valve is adjusted to the required pressure by opening/closing the opening of a positive and negative pressure air inlet.
6. The automated test system of unmanned aerial vehicle engine electronic spray control units of claim 1, wherein each electronic spray control unit further comprises an electronic spray data receiving module, a power acquisition module, an environmental test module, a pulse width acquisition module, an analog output module, a pneumatic valve control module, a power-on control module, a manual test module, a communication module, a temperature test module, a system initialization module, an oil pump control module, a rotational speed control module, an automatic test module, and an automatic test recording module, which are in communication connection.
7. The unmanned aerial vehicle engine electronic spray control unit automatic test system of claim 1, further comprising a touch all-in-one machine for human-machine interaction interface configuration design; and the printer is connected with the network switch in a networking communication way.
8. The automatic test system of an unmanned aerial vehicle engine electronic injection control unit according to claim 7, wherein the touch integrated machine comprises an initial interface, a power control interface, a comprehensive test interface, a temperature test interface and an oil injection pulse width test interface, and is used for man-machine data information interaction; the initial interface comprises test parameter input, system initialization, environment test selection and report printout, wherein the environment test comprises vibration, impact, high-low temperature work, high-low temperature storage, low air pressure, damp heat and other tests.
9. The unmanned aerial vehicle engine electronic spray control unit automatic test system of claim 7, wherein the plurality of electronic spray control units comprises at least 8 electronic spray control units.
10. The automatic test system of an unmanned aerial vehicle engine electronic injection control unit according to claim 1, wherein all the boxes and the unit modules are independently powered and are connected with a 220V alternating current power supply socket through alternating current power supply wires.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311235179.4A CN117193247A (en) | 2023-09-22 | 2023-09-22 | Automatic test system for electronic injection control unit of unmanned aerial vehicle engine |
| PCT/CN2024/107783 WO2025060678A1 (en) | 2023-09-22 | 2024-07-26 | Automatic test system for engine electronic fuel injection control unit of unmanned aerial vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311235179.4A CN117193247A (en) | 2023-09-22 | 2023-09-22 | Automatic test system for electronic injection control unit of unmanned aerial vehicle engine |
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| CN117193247A true CN117193247A (en) | 2023-12-08 |
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| CN202311235179.4A Pending CN117193247A (en) | 2023-09-22 | 2023-09-22 | Automatic test system for electronic injection control unit of unmanned aerial vehicle engine |
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| CN (1) | CN117193247A (en) |
| WO (1) | WO2025060678A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025060678A1 (en) * | 2023-09-22 | 2025-03-27 | 西安爱生技术集团有限公司 | Automatic test system for engine electronic fuel injection control unit of unmanned aerial vehicle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201191455Y (en) * | 2008-04-21 | 2009-02-04 | 中国人民解放军军事交通学院 | Multimedia network training educating system for electric spraying engine |
| CN103631256B (en) * | 2013-12-03 | 2016-02-10 | 北京亚新科天纬油泵油嘴股份有限公司 | A kind of method of engine signal analog simulation test board and test ECU thereof |
| CN109753050A (en) * | 2019-01-28 | 2019-05-14 | 西安爱生技术集团公司 | A portable unmanned aerial vehicle manipulation controller test system and test method |
| CN209795860U (en) * | 2019-04-04 | 2019-12-17 | 西安爱生技术集团公司 | An automatic test system for a certain type of UAV steering gear |
| CN111911306B (en) * | 2020-07-27 | 2022-10-04 | 山东飞奥航空发动机有限公司 | Test simulation system of unmanned aerial vehicle electronic injection system and implementation method thereof |
| US20220341369A1 (en) * | 2021-04-26 | 2022-10-27 | Viettel Group | Closed-loop control method for EFI internal combustion engine on an unmanned aerial vehicle |
| CN117193247A (en) * | 2023-09-22 | 2023-12-08 | 西安爱生技术集团有限公司 | Automatic test system for electronic injection control unit of unmanned aerial vehicle engine |
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2023
- 2023-09-22 CN CN202311235179.4A patent/CN117193247A/en active Pending
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2025060678A1 (en) * | 2023-09-22 | 2025-03-27 | 西安爱生技术集团有限公司 | Automatic test system for engine electronic fuel injection control unit of unmanned aerial vehicle |
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