CN110580036A - IPCU test bench - Google Patents
IPCU test bench Download PDFInfo
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- CN110580036A CN110580036A CN201910888351.3A CN201910888351A CN110580036A CN 110580036 A CN110580036 A CN 110580036A CN 201910888351 A CN201910888351 A CN 201910888351A CN 110580036 A CN110580036 A CN 110580036A
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- 230000003287 optical effect Effects 0.000 claims description 8
- 238000012423 maintenance Methods 0.000 claims description 6
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- 238000001514 detection method Methods 0.000 claims description 4
- 238000007689 inspection Methods 0.000 abstract description 6
- 238000004590 computer program Methods 0.000 abstract description 5
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- 238000006243 chemical reaction Methods 0.000 description 3
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
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Abstract
The invention discloses an IPCU test bench which comprises a host, a cabinet, a control box and a load simulation box, wherein the host is respectively connected with the control box and the load simulation box through a USB-485; the upper end of the cabinet is provided with a plurality of loads, and the load simulation box is connected with the loads at the upper end of the cabinet. The invention is uniformly controlled by a host computer upper computer program, the host computer is communicated with the control box and the load box in real time, the test flow is preset and matched with each other, and each resource of the system is called, thereby realizing the automatic completion of all test items of the IPCU, wherein the test items have the functions of mechanical and electrical inspection, WIPU direct current power consumption, serial interfaces and over-temperature control.
Description
Technical Field
The invention belongs to the technical field of IPCU testing devices, and particularly relates to an IPCU testing table.
Background
The aircraft can be iced when flying under icing meteorological conditions, and particularly, an air inlet channel of an engine of the aircraft is easier to be iced under the action of engine suction. Icing of the inlet may alter the profile of the inner surface of the engine inlet, resulting in a reduction in the effective intake area of the engine inlet, which may cause engine thrust droop and surge. In addition, ice build-up in the engine intake may shed ice that may damage engine fan blades, and in severe cases may even cause the engine to stall, thereby affecting flight safety. Therefore, there is a need to activate aircraft anti-icing systems in time during icing weather conditions to prevent and/or remove ice accretion on aircraft in flight, particularlyIs the accumulated ice in the air inlet channel. It is noted that reference to the term "ice" in this application shall include all kinds of ice, frost and mixtures thereof(patent application No. 201210243673.0, filing date: 2012.07.13, patent name: aircraft anti-icing device. Aircraft anti-icing devices are particularly important for aircraft, and therefore aircraft control assemblies (IPCUs) are regularly tested.
Disclosure of Invention
The invention discloses an IPCU test board which is uniformly controlled by a host computer upper computer program, wherein the host computer is communicated with a control box and a load box in real time, a test flow is preset and matched with each other, and each resource of a system is called, so that all test items of the IPCU can be automatically completed, wherein the test items have the functions of mechanical and electrical inspection, WIPU direct current power supply consumption, serial interfaces and over-temperature control.
the invention is mainly realized by the following technical scheme: an IPCU test bench comprises a host, a cabinet, a control box and a load simulation box, wherein the host is respectively connected with the control box and the load simulation box through a USB-485; the upper end of the cabinet is provided with a plurality of loads, and the load simulation box is connected with the loads at the upper end of the cabinet.
the IPCU can automatically perform anti-icing protection on the waterway, the floor panel, the bypass installation joint and the auxiliary equipment. The IPCU consists of 1 main board, 1 interface board, 8 heating control boards and 4 power supply boards. The IPCU is directly related to the flight safety of the aircraft.
In order to better implement the invention, the load simulation box further comprises a relay matrix module, an MCU module and a load combination selection module, the load simulation box is provided with a thermal load output interface, and the IPCU is correspondingly provided with a J1-D interface respectively; the IPCU is connected with a relay matrix module through a J1-D interface and a heat load output interface, the relay matrix module is respectively connected with a load combination selection module and an MCU module, and the load combination selection module is connected with a load in the cabinet; the host is connected with the MCU module through the USB-485.
In order to better realize the invention, the load box adopts a singlechip of ATMEGA16L type as a main control chip, an isolation type 485 is used for communicating with a host, an output is isolated by an optical coupler, a relay matrix connection method is used for load switching, and the singlechip controls the on and off of a relay through 574 and an ULN2803 so as to realize the load switching of each channel.
in order to better implement the invention, a panel of the load simulation box is further provided with a thermal load output interface, a thermal load input interface, a +5V power switch and a test hole, a +12V power switch and a test hole, a 220VAC power switch and an indicator light.
In order to better implement the invention, the control box is further provided with an IO control-power interface and a Sensor interface, and the IPCU is respectively and correspondingly provided with a J1-B interface and a J1-A interface; the control box comprises an MCU module, a function selection module, a relay board card, and a first switch and a second switch which are arranged on the relay board card; the relay board card is connected with the IO control-power interface through switching of the first switch and connected with the function selection module through switching of the second switch, the function selection module is connected with the Sensor interface, and the host is connected with the relay board card and the MCU module through the USB-485 interface respectively.
In order to better realize the invention, the control box further comprises an automatic temperature simulation module and a manual temperature simulation module, the relay board is respectively connected with the automatic temperature simulation module and the manual temperature simulation module through second switch switching, and the MCU module is connected with the automatic temperature simulation module.
In order to better realize the invention, a panel of the control box is further provided with an RS232 and CAN communication signal testing hole, a voltage signal testing interface, a maintenance mode testing hole, a 1.5 ~ 5V voltage adjusting knob, a communication interface, a testing interface, a 28VDC power voltmeter, a 28VDC power ammeter, a testing platform power detecting testing hole, a power switch and a temperature simulation adjusting knob.
In order to better realize the invention, the control box adopts a singlechip of ATMEGA16L model as a main control chip, an isolation type 485 is used for communicating with a host, the input and the output are isolated by an optical coupler, the temperature simulation adopts an adjustable potentiometer and a fixed resistance mode and is switched by a relay board card, and the IO discrete quantity control adopts the relay board card to connect 28V, GND and OPEN.
in order to better implement the invention, the MCU module is further connected with the IPCU through a WIPDU interface and IIC communication respectively.
In order to better realize the invention, the control box and the load simulation box are respectively provided with a 220VAC interface and a switch power supply, and the 220VAC power supply of the workshop is respectively connected with the switch power supply through the 220VAC interface; the load simulation box is also provided with a 115VAC interface and a heat load input interface, and the IPCU is correspondingly provided with a J1-C interface respectively; and the workshop 3-phase 115VAC power supply is connected with the J1-C interface of the IPCU through the 115VAC interface and the heat load input interface in sequence.
The USB-485 is a serial port converter and adopts photoelectric isolation. 574 is 74HCT574D, which is a D-type tri-state rising edge flip-flop for bus data control. The ULN2803 is a darlington driver for driving a relay with open collector output and freewheeling clamp diode for suppressing transients.
The invention has the beneficial effects that:
(1) The IPCU is an aircraft anti-icing control assembly, and the test board is suitable for PN: 300-040-628/300-060-750/300-067-265 IPCU. The user operates various control switches on the panel of the test board, tests through special test software, and can effectively complete various performance tests of the IPCU.
(2) The invention adopts an automatic working mode, CAN provide a 28V direct current power supply required by a tested piece according to various regulations in a test flow in a CMM manual, and provides power supply voltage, current monitoring, discrete quantity input control, discrete quantity output indication, load simulation, temperature sensor simulation, I2C, CAN and RS232 communication so as to effectively test the UUT performance.
(3) the test equipment can complete automatic test of the IPCU, simplify complicated manual steps, be fully automatic and improve the working efficiency of testers. Automatic modularization more accurately avoids manual error and test deviation of testers.
(4) The load box adopts single chip microcomputer control, bus extension and switch matrix, can automatically set and switch the load change of each channel, reduces manual errors and improves efficiency.
(5) The control box adopts single chip microcomputer control, bus extension and switch matrix, contains CAN and RS232 communication, CAN automatically provide temperature, IO and communication work of each channel, completes IPCU test, reduces manual error and improves efficiency.
(6) The whole system is uniformly controlled by a host computer upper computer program, is communicated with the control box and the load box in real time, is preset with a test flow, is matched with each other, calls each resource of the system, and automatically completes all test items of the IPCU, wherein the test items are as follows: mechanical and electrical inspection, WIPU direct current power consumption, serial interface, and over-temperature control.
Drawings
FIG. 1 is a schematic diagram of a load simulation box panel;
FIG. 2 is a schematic diagram of a panel structure of the control box;
FIG. 3 is a diagram of a manual test software interface;
FIG. 4 is a diagram of an automated test software interface;
FIG. 5 is a functional block diagram of the present invention;
FIG. 6 is a schematic circuit diagram of an MCU module of the load simulation box;
FIG. 7 is a schematic diagram of a load resistance switching circuit of the load simulation box;
FIG. 8 is a schematic circuit diagram of an MCU module of the control box;
FIG. 9 is a schematic diagram of a temperature simulation circuit for the control box;
FIG. 10 is a schematic diagram of a discrete quantity control circuit of the control box.
The device comprises a thermal load output interface 1, a thermal load input interface 2, a 3, +5V power switch and test hole, a 4, +12V power switch and test hole, a 5, 220VAC power switch and indicator lamp, a 21, RS232 and CAN communication signal test hole, a 22 voltage signal test interface 23, a maintenance mode test hole, a 24, 1.5 ~ 5V voltage adjusting knob 25, a communication interface 26, a test interface, a 27, 28VDC power voltmeter, a 28, 28VDC power ammeter 29, a test board power detection test hole 210, a power switch 211 and a temperature simulation adjusting knob.
Detailed Description
example 1:
An IPCU test bench is shown in figure 5 and comprises a host, a cabinet, a control box and a load simulation box, wherein the host is connected with the control box and the load simulation box through USB-485 respectively; the upper end of the cabinet is provided with a plurality of loads, and the load simulation box is connected with the loads at the upper end of the cabinet.
The invention adopts an automatic working mode, CAN provide a 28V direct current power supply required by a tested piece according to various regulations in a test flow in a CMM manual, and provides power supply voltage, current monitoring, discrete quantity input control, discrete quantity output indication, load simulation, temperature sensor simulation, I2C, CAN and RS232 communication so as to effectively test the UUT performance.
The whole system is uniformly controlled by a host computer upper computer program, is communicated with the control box and the load box in real time, is preset with a test flow, is matched with each other, calls each resource of the system, and automatically completes all test items of the IPCU, wherein the test items are as follows: mechanical and electrical inspection, WIPU direct current power consumption, serial interface, and over-temperature control.
Example 2:
The present embodiment is optimized based on embodiment 1, and as shown in fig. 1, a thermal load output interface 1, a thermal load input interface 2, a +5V power switch 210, a test hole 3, a +12V power switch 210, a test hole 4, a 220VAC power switch 210, and an indicator lamp 5 are provided on a panel of the load simulation box.
As shown in fig. 5, the load simulation box includes a relay matrix module, an MCU module, and a load combination selection module, and the load simulation box is provided with a thermal load output interface 1, and the IPCU is correspondingly provided with J1-D interfaces; the IPCU is connected with a heat load output interface 1 through a J1-D interface and a relay matrix module, the relay matrix module is respectively connected with a load combination selection module and an MCU module, and the load combination selection module is connected with a load in the cabinet; the host is connected with the MCU module through the USB-485.
As shown in fig. 6-7, the load box uses a single chip microcomputer of ATMEGA16L model as a main control chip, communicates with a host through an isolation type 485, outputs are isolated through an optical coupler, and the load switching uses a relay matrix connection method, and the single chip microcomputer controls the on and off of a relay through 574 and a ULN2803 to realize the load switching of each channel.
The load box adopts single chip microcomputer control, bus extension and switch matrix, can automatically set and switch the load change of each channel, reduces manual errors and improves efficiency.
Other parts of this embodiment are the same as embodiment 1, and thus are not described again.
Example 3:
The embodiment is optimized on the basis of embodiment 1 or 2, and as shown in fig. 2, an RS232 and CAN communication signal testing hole 21, a voltage signal testing interface 2622, a maintenance mode testing hole 23, a 1.5 ~ 5V voltage adjusting knob 24, a communication interface 25, a testing interface 26, a 28VDC power voltmeter 27, a 28VDC power ammeter 28, a testing platform power detecting testing hole 29, a power switch 210 and a temperature simulation adjusting knob 211 are arranged on a panel of the control box.
As shown in fig. 5, the control box is provided with an IO control-power interface and a Sensor interface, and the IPCU is respectively provided with a J1-B interface and a J1-a interface; the control box comprises an MCU module, a function selection module, a relay board card, and a first switch and a second switch which are arranged on the relay board card; the relay board card is connected with the IO control-power interface through switching of the first switch and connected with the function selection module through switching of the second switch, the function selection module is connected with the Sensor interface, and the host is connected with the relay board card and the MCU module through the USB-485 interface respectively.
The control box further comprises an automatic temperature simulation module and a manual temperature simulation module, the relay board card is respectively connected with the automatic temperature simulation module and the manual temperature simulation module through second switch switching, and the MCU module is connected with the automatic temperature simulation module. And the MCU module is respectively connected with the IPCU through a WIPDU interface and IIC communication.
As shown in fig. 8-10, the control box uses a single chip microcomputer of ATMEGA16L model as a main control chip, and communicates with a host computer by using an isolation type 485, the input and the output are isolated by using an optical coupler, the temperature simulation uses an adjustable potentiometer and a fixed resistance mode, and uses a relay board card for switching, and the IO discrete quantity control uses the relay board card to switch on 28V, GND and OPEN.
The control box adopts single chip microcomputer control, bus extension, switch matrix to contain CAN, RS232 communication, CAN provide the temperature, IO and the communication work of each passageway automatically, accomplish IPCU's test, reduce manual error, and raise the efficiency.
the rest of this embodiment is the same as embodiment 1 or 2, and therefore, the description thereof is omitted.
example 4:
the embodiment is optimized on the basis of any one of embodiments 1 to 3, as shown in fig. 5, the control box and the load simulation box are respectively provided with a 220VAC interface and a switching power supply, and the 220VAC power supply of the workshop is respectively connected with the switching power supply through the 220VAC interface; the load simulation box is also provided with a 115VAC interface and a heat load input interface 2, and the IPCU is correspondingly provided with a J1-C interface respectively; and the workshop 3 phase 115VAC power supply is connected with the J1-C interface of the IPCU through the 115VAC interface and the heat load input interface 2 in sequence. And a switching power supply in the control box is respectively connected with the MCU module and the relay board card.
Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.
Example 5:
An IPCU test bench comprises a cabinet, a load simulation box, a control box, an industrial personal computer and a test cable. As shown in fig. 1, the panel of the load simulation box is provided with a thermal load output interface 1, a thermal load input interface 2, a +5V power switch 210, a test hole 3, a +12V power switch 210, a test hole 4, a 220VAC power switch 210 and an indicator lamp 5.
As shown in FIG. 2, the panel of the control box is provided with an RS232 and CAN communication signal test hole 21, a voltage signal test interface 2622, a maintenance mode test hole 23, a 1.5 ~ 5V voltage adjusting knob 24, a communication interface 25, a test interface 26, a 28VDC power voltmeter 27, a 28VDC power ammeter 28, a test board power detection test hole 29, a power switch 210 and a temperature simulation adjusting knob 211.
As shown in fig. 5, the present invention adopts an automatic operating mode, and CAN provide a 28V dc power supply required by a tested piece according to various regulations in a test flow in a CMM manual, and provide power supply voltage, current monitoring, discrete quantity input control, discrete quantity output indication, load simulation, temperature sensor simulation, I2C, CAN, RS232 communication, so as to effectively test the performance of a UUT.
The whole system is uniformly controlled by a host computer upper computer program, is communicated with the control box and the load box in real time, is preset with a test flow, is matched with each other, calls each resource of the system, and automatically completes all test items of the IPCU, wherein the test items are as follows: mechanical and electrical inspection, WIPU direct current power consumption, serial interface, and over-temperature control.
as shown in fig. 6 and 7, the load simulation box is designed by using an ATMEGA16L high-performance single chip as a main control chip, communicating with a host by using an isolation type 485, isolating output by using an optical coupler, and switching load by using a relay matrix connection method, wherein the single chip controls the on and off of a relay through 574 and a ULN2803, so as to realize load switching of each channel.
as shown in fig. 8-10, the control box adopts an ATMEGA16L high-performance single chip as a main control chip, and communicates with a host computer by an isolation type 485, and the input and output are isolated by an optical coupler. The temperature simulation adopts the mode of an adjustable potentiometer and a fixed resistor, and the relay board is used for switching in time. The IO discrete quantity control adopts the states of the relay board card such as 28V, GND and OPEN.
Signal supply:
a. Outputting the discrete quantity: 6 paths of reaction;
b. Inputting discrete quantity: 50 paths of the solution;
c, RS232: 2-path; CAN: 1 path; i is2c: 1 path;
d. Temperature simulation: 32 routes of the reaction;
e. Load simulation: 32 routes.
1. the use conditions of the test bench are as follows:
power supply:
An alternating current power supply: 220VAC + -5%/50 Hz + -5%, 2A.
three-phase AC power supply: 115VAC + -5%/400 Hz + -5%, 10A.
environment:
the temperature is-10 ℃ ~ +50 ℃;
Humidity 10% RH ~ 85% RH;
Air pressure: and (4) field voltage.
Indoor fixed points are used in the environment without dust, acid, alkali and other corrosive gases, strong mechanical vibration impact and strong electromagnetic field.
2. The test bench comprises the following steps:
1) Preparation before testing
step 1: the front panel "220 VAC" power switch 210 is thrown down, all the toggle switches are thrown down, and after confirming that no excess wires or other conductive substances are present on the test stand, the shop 220VAC power and 115VAC power are respectively connected to the test stand by means of power cables.
Step 2: and starting the computer, and connecting the communication interface 25 on the test board to a USB interface of the computer through a corresponding serial port conversion line.
And 3, step 3: the tested piece is connected to the test bench through the test cable.
2) Testing
And 4, step 4: and opening the test software on the computer, and testing according to the CMM test flow.
3) test completion
and 5, step 5: the front panel "220 VAC" power switch 210 is thrown off.
And 6, step 6: all the connecting wires are disconnected, and the equipment is stored according to the regulations.
3. Note that:
1) Before power-on, the front panel "220 VAC" power switch 210 was confirmed to throw, and careful inspection ensured that there were no excess conductors such as suspended wires on the test stand.
2) And (4) the plug of the tested piece is not plugged in and pulled out in a hot-line manner, and all the switches are disconnected or thrown down after the test is finished, so that all the cables are disconnected.
3) In the event of an emergency, the "220 VAC" power switch 210 is thrown first.
4. Checking:
(1) Device detection
The equipment is tested according to YMGHCSN-97-YG 'test outline of test board acceptance of driving IPCU'.
(2) Gauge outfit check
And taking down the voltage and ammeter and sending the voltage and ammeter to a regular check unit for checking.
(3) Check period
The check cycle of the device is once every two years.
5. And (3) fault analysis:
5.1 power failure:
1) The 220VAC power indicator is not on: and checking whether a 220VAC power line is broken, whether the fuse is burnt out or not and whether the indicator light is damaged or not.
2) No power output of 28VDC, 12VDC/5 VDC: and (4) checking whether each switching power supply works normally, whether the LM317 voltage stabilizing module is damaged or not, and whether each power supply circuit is disconnected or not.
5.2 Signal failure:
1) If each discrete quantity output signal is incorrect: and (5) checking whether the relay board is damaged or not, and whether the discrete quantity wiring is broken or not.
2) If no load output or output load exceeds the error range: and (4) checking whether the wiring of each load resistor on the upper part of the cabinet is broken or not, and whether the load control relay board is damaged or not.
The operation of the test software of the present invention is as follows:
As shown in fig. 3, the manual interface of the test software is mainly divided into four functional areas: r232 command sending and receiving area, function switch setting area, analog temperature-current setting area and data reading area.
1) R232 command transmitting and receiving area
this part of the functionality is mainly used for manually sending the DEU _ B command and the maintenance interface command.
2) Function switch setting area
The function of the part is mainly to adjust the on and off control of a PIN-Programming PIN.
3) Simulated temperature-current setting zone
The function of the part is mainly that the 'setting of a temperature sensor' can set 1-32 channel temperatures and 1-32 load current values respectively.
4) data reading area
The partial functions are mainly' reading CAN receiving identifiers and data, WIPDU direct current power consumption, and reading current values and temperature values of the current sensors.
as shown in fig. 4, the automatic test mainly includes: the method comprises the following steps of measuring IPCU power consumption, testing current, testing heater temperature, testing L/G-Signals, testing overload current of a heater, testing power failure, testing WIPDU, PIN-Programming, verifying Flash-EPROM and the like.
1) Measuring IPCU Power consumption
the part has two states of 'operating all heaters OFF' and 'operating all heaters ON' to test the voltage and current values of the IPCU.
2) Current testing
the part is divided into a small current test part and a large current test part.
1. Wherein, the small current test is divided into 1-32 paths: 150 milliamp test "and" 1-32 lanes: 1A test "
The test results show the value of each way in a drop-down text box, and if the test value exceeds the desired value, the value is shown in an "error data box".
2. the ' heavy current test ' is divided into ' 25-32 paths: 4.2 amp test, 5.8 amp test "and" lanes 9-16: the 4.2 amp test, 5.8 amp test "test results show the value of each way in a drop-down text box, and if the test value exceeds the required value, the value is shown in an" error data box ".
3) heater temperature test
This section has four tests "set 3.2 ℃ test", "set 80.2 ℃ test", "set 109.2 ℃ test" and "set-75.8 ℃ test". The test results show the value of each way in a drop-down text box, and if the test value exceeds the desired value, the value is shown in an "error data box".
4) testing L/G-Signals
The part has 'L/G-GND signal test', 'L/G-28V signal test', 'load management state test'
And (5) testing three states. The test results show the value of each way in a drop-down text box, and if the test value exceeds the desired value, the value is shown in an "error data box".
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. The IPCU test bench is characterized by comprising a host, a cabinet, a control box and a load simulation box, wherein the host is respectively connected with the control box and the load simulation box through a USB-485; the upper end of the cabinet is provided with a plurality of loads, and the load simulation box is connected with the loads at the upper end of the cabinet.
2. The IPCU test bench according to claim 1, wherein the load simulation box comprises a relay matrix module, an MCU module and a load combination selection module, the load simulation box is provided with a thermal load output interface, and the IPCU is correspondingly provided with a J1-D interface respectively; the IPCU is connected with a relay matrix module through a J1-D interface and a heat load output interface, the relay matrix module is respectively connected with a load combination selection module and an MCU module, and the load combination selection module is connected with a load in the cabinet; the host is connected with the MCU module through the USB-485.
3. the IPCU test bench according to claim 2, wherein a single chip microcomputer of an ATMEGA16L model is adopted as a main control chip of the load box, an isolation type 485 is used for communicating with a host, an optical coupler is used for isolating output, a relay matrix connection method is used for load switching, and the single chip microcomputer controls the connection and disconnection of relays through 574 and a ULN2803 so as to realize load switching of each channel.
4. the IPCU test bench of claim 1, wherein a thermal load output interface, a thermal load input interface, a +5V power switch and test hole, a +12V power switch and test hole, a 220VAC power switch and an indicator light are disposed on the panel of the load simulation box.
5. The IPCU test bench according to any one of claims 1 to 4, wherein an IO control-power interface and a Sensor interface are arranged on the control box, and the IPCU is correspondingly provided with a J1-B interface and a J1-A interface respectively; the control box comprises an MCU module, a function selection module, a relay board card, and a first switch and a second switch which are arranged on the relay board card; the relay board card is connected with the IO control-power interface through switching of the first switch and connected with the function selection module through switching of the second switch, the function selection module is connected with the Sensor interface, and the host is connected with the relay board card and the MCU module through the USB-485 interface respectively.
6. the IPCU test bench according to claim 5, wherein the control box further comprises an automatic temperature simulation module and a manual temperature simulation module, the relay board card is respectively connected with the automatic temperature simulation module and the manual temperature simulation module through second switch switching, and the MCU module is connected with the automatic temperature simulation module.
7. the IPCU test bench according to claim 6, wherein a single chip microcomputer of an ATMEGA16L model is adopted as a main control chip of the control box, an isolation type 485 is used for communicating with a host, input and output are isolated by an optical coupler, temperature simulation is achieved by an adjustable potentiometer and a fixed resistor mode and switching is achieved by a relay board card, and IO discrete quantity control is achieved by switching 28V, GND and OPEN through the relay board card.
8. The IPCU test bench according to claim 5, wherein the MCU module is connected to the IPCU through WIPDU interface and IIC communication respectively.
9. The IPCU test bench according to claim 1, wherein an RS232 and CAN communication signal test hole, a voltage signal test interface, a maintenance mode test hole, a 1.5 ~ 5V voltage adjusting knob, a communication interface, a test interface, a 28VDC power voltmeter, a 28VDC power ammeter, a test bench power detection test hole, a power switch and a temperature simulation adjusting knob are arranged on a panel of the control box.
10. The IPCU test bench according to claim 1, wherein the control box and the load simulation box are respectively provided with a 220VAC interface and a switch power supply, and the 220VAC power supply of the workshop is respectively connected with the switch power supply through the 220VAC interface; the load simulation box is also provided with a 115VAC interface and a heat load input interface, and the IPCU is correspondingly provided with a J1-C interface respectively; and the workshop 3-phase 115VAC power supply is connected with the J1-C interface of the IPCU through the 115VAC interface and the heat load input interface in sequence.
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| CN201910888351.3A CN110580036A (en) | 2019-09-19 | 2019-09-19 | IPCU test bench |
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| CN201910888351.3A CN110580036A (en) | 2019-09-19 | 2019-09-19 | IPCU test bench |
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