CN113311277A - Engineering machinery display and control integrated hardware and software function test system - Google Patents

Engineering machinery display and control integrated hardware and software function test system Download PDF

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Publication number
CN113311277A
CN113311277A CN202110713924.6A CN202110713924A CN113311277A CN 113311277 A CN113311277 A CN 113311277A CN 202110713924 A CN202110713924 A CN 202110713924A CN 113311277 A CN113311277 A CN 113311277A
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output
voltage
low
module
circuit
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宋永琴
吴育武
罗琅腾
叶盈海
唐国琴
孔丹
邹朝忠
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Guiyang Yongqing Instruments and Electronic Science and Technology Co Ltd
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Guiyang Yongqing Instruments and Electronic Science and Technology Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/005—Testing of electric installations on transport means
    • G01R31/006—Testing of electric installations on transport means on road vehicles, e.g. automobiles or trucks
    • 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
    • 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
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0256—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults injecting test signals and analyzing monitored process response, e.g. injecting the test signal while interrupting the normal operation of the monitored system; superimposing the test signal onto a control signal during normal operation of the monitored system

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  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Testing Electric Properties And Detecting Electric Faults (AREA)

Abstract

The invention provides a display and control integrated hardware and software function test system for engineering machinery; the device comprises an acquisition control unit, a touch screen display and a 220V power supply, wherein the acquisition control unit is communicated with the touch screen display through a CAN bus, and the 220V power supply is converted into a plurality of power supplies with different voltages through a power supply conversion module in the acquisition control unit to respectively supply power to a test module in the acquisition control unit; the invention increases the debugging means of the controller and improves the working efficiency, and can provide the debugging semaphore input and output required by different controllers or different items of the same controller; the output of each analog quantity can be adjusted within a limited range through a knob on the test bench, and the change of data can be observed in real time through a display. The controller test board is integrated with display and control, does not need an external direct-current power supply, and can directly supply power through a 220V alternating-current power supply.

Description

Engineering machinery display and control integrated hardware and software function test system
Technical Field
The invention relates to a display and control integrated hardware and software function test system for engineering machinery.
Background
Along with the continuous development of intellectualization, the engineering machinery product has more and more complex control logic, higher and more requirements on production and assembly, higher and more electric control degree of the whole vehicle, and the hardware and software of each electric control part must be ensured to be correct before the whole vehicle is assembled. This needs to introduce the detection means or equipment before loading, but the current detection means or equipment has the following disadvantages:
1. the integration level of debugging equipment is not high, and debugging a complicated electrical unit needs to be equipped with a plurality of debugging tools, and a large amount of debugging time can be wasted to the wiring between each debugging equipment, and is inefficient.
2. The signal output by the debugging equipment cannot be intuitively acquired with the specific value, the specific value of the output signal needs to be measured by other measuring devices such as a multimeter, the debugging process is not intuitive, and manual measurement factors are introduced to increase the unreliability of detection.
3. The functional modular layout is not humanized enough, and the detection ports of the same type are not concentrated and are dispersed.
Disclosure of Invention
In order to solve the technical problem, the invention provides a display and control integrated hardware and software function test system for engineering machinery.
The invention is realized by the following technical scheme.
The invention provides a display and control integrated hardware and software function test system for engineering machinery; the device comprises an acquisition control unit, a touch screen display and a 220V power supply, wherein the acquisition control unit is communicated with the touch screen display through a CAN bus, and the 220V power supply is converted into a plurality of power supplies with different voltages through a power supply conversion module in the acquisition control unit to respectively supply power to a test module in the acquisition control unit;
the test module comprises a DC voltage output test module, a frequency signal output test module, a high-low switch signal output test module, a current output test module, a voltage output test module, a resistance output test module, a DO input indication module and a PWM output indication module which are respectively connected with the touch screen display;
the DC voltage output testing module, the frequency signal output testing module, the high-low switching signal output testing module, the current output testing module, the voltage output testing module, the resistance output testing module, the DO input indicating module and the PWM output indicating module are respectively provided with a connecting port with the tested equipment.
The DC voltage output test module comprises two groups of switch voltage stabilizing circuits, wherein the input ends of the two groups of switch voltage stabilizing circuits are connected with a power supply, and the other ends of the two groups of switch voltage stabilizing circuits respectively output +5V and +12V power supplies and are grounded.
The frequency signal output test module comprises a chip IC, the input end of the chip IC is connected with an AD sampling chip, the output end of the chip IC is connected with the transport amplifier, the input end of the AD sampling chip is connected with the adjusting knob, and the output end of the operational amplifier outputs a frequency signal.
The high-low switch signal output test module comprises a high-voltage signal test circuit and a low-voltage signal test circuit, and the high-voltage signal test circuit and the low-voltage signal test circuit both comprise a diode and a light-emitting diode; the anode of a diode in the high-voltage signal test circuit is connected with the anode of a light-emitting diode, the anode of the light-emitting diode is connected with POWER + through a toggle switch, and the cathode of the diode outputs a high-voltage switch signal; the anode of a diode in the low-voltage signal test circuit is connected with the anode of a light-emitting diode, the anode of the light-emitting diode is connected with a +5V power supply, the cathode of the light-emitting diode is grounded through a toggle switch, and the anode of the diode outputs a low-voltage switch signal.
The current output test module comprises an adjusting knob, the adjusting knob is connected with the control end of the voltage-controlled current regulating chip, the input end of the voltage-controlled current regulating chip is connected with POWER +, and the output end of the voltage-controlled current regulating chip outputs 0-25mA current.
The voltage output test module comprises a voltage buffer, the input end of the voltage buffer is connected with an adjusting knob, the two ends of the adjusting knob are respectively connected with a +5V power supply and the ground, and the output end of the voltage buffer outputs 0-5V voltage.
The resistance output test module adjusts the resistance of the resistance output test module through a knob to serve as an output resistor.
The DO input indicating module comprises a low-side DO input indicating circuit and a high-side DO input indicating circuit;
the low-side DO input indicating circuit is connected with a +5V power supply through the anode of the light emitting diode, and the cathode of the low-side DO input indicating circuit is connected with a low-side output port in the detected equipment;
the high-side DO input indicating circuit is connected with a high-side output port in the detected equipment through the anode and the cathode of the light emitting diode, and the cathode of the high-side DO input indicating circuit is grounded.
The PWM input indicating module comprises a low-side PWM output circuit and a high-side PWM output circuit, the low-side PWM output circuit is triggered by a PWM signal to output a PWM level, and the input test board lights a pull-up LED indicating lamp; the high-side PWM output circuit is triggered by a PWM signal to output a PWM level, and the input test board lights the pull-down LED indicator lamp.
The invention has the beneficial effects that: the debugging means of the controller is added, the working efficiency is improved, and the debugging semaphore input and output required by different controllers or different items of the same controller can be provided; the output of each analog quantity can be adjusted within a limited range through a knob on the test bench, and the change of data can be observed in real time through a display. The controller test board is integrated with display and control, does not need an external direct-current power supply, and can directly supply power through a 220V alternating-current power supply.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of the DC voltage output circuit of the present invention;
FIG. 3 is a schematic diagram of the output circuit of the adjustable frequency signal of the present invention;
FIG. 4 is a schematic diagram of the high and low switching signal output circuit of the present invention;
FIG. 5 is a schematic diagram of the adjustable current output circuit of the present invention;
FIG. 6 is a schematic diagram of the adjustable voltage output circuit of the present invention;
FIG. 7 is a schematic diagram of the adjustable resistance output circuit of the present invention;
FIG. 8 is a schematic diagram of the DO input indicating circuit of the present invention;
FIG. 9 is a schematic diagram of a PWM input indication circuit of the present invention;
FIG. 10 is a block diagram of one embodiment of a test station operator panel of the present invention;
FIG. 11 is a block diagram of a test stand controller 81 core connector of the present invention;
figure 12 is a block diagram of a test stand controller 40 core connector of the present invention.
Detailed Description
The technical solution of the present invention is further described below, but the scope of the claimed invention is not limited to the described.
A hardware and software function test system for an engineering machinery display and control integration; the device comprises an acquisition control unit, a touch screen display and a 220V power supply, wherein the acquisition control unit is communicated with the touch screen display through a CAN bus, and the 220V power supply is converted into a plurality of power supplies with different voltages through a power supply conversion module in the acquisition control unit to respectively supply power to a test module in the acquisition control unit;
the test module comprises a DC voltage output test module, a frequency signal output test module, a high-low switch signal output test module, a current output test module, a voltage output test module, a resistance output test module, a DO input indication module and a PWM output indication module which are respectively connected with the touch screen display;
the DC voltage output test module, the frequency signal output test module, the high-low switch signal output test module, the current output test module, the voltage output test module, the resistance output test module, the DO input indication module and the PWM output indication module are respectively provided with a connecting port with tested equipment, and +5VDC/+12VDC voltage is provided by the voltage reduction and stabilization of the integrated switch voltage stabilizing circuit, and the current limiting and overheating protection are integrated in the integrated switch voltage stabilizing circuit.
The DC voltage output test module comprises two groups of switch voltage stabilizing circuits, wherein the input ends of the two groups of switch voltage stabilizing circuits are connected with a power supply, and the other ends of the two groups of switch voltage stabilizing circuits respectively output +5V and +12V power supplies and are grounded.
The frequency signal output test module comprises a chip IC, the input end of the chip IC is connected with an AD sampling chip, the output end of the chip IC is connected with a transport amplifier, the input end of the AD sampling chip is connected with an adjusting knob, the output end of an operational amplifier outputs a frequency signal, the output of the adjustable frequency signal is a square wave signal (the level is +3.3V) of which the CPU generates a corresponding proportionality coefficient through the adjusting value of the sampling frequency adjusting knob, and the input operational amplifier circuit amplifies the frequency signal (the level is +5V) and outputs the frequency signal.
The high-low switch signal output test module comprises a high-voltage signal test circuit and a low-voltage signal test circuit, and the high-voltage signal test circuit and the low-voltage signal test circuit both comprise a diode and a light-emitting diode; the anode of a diode in the high-voltage signal test circuit is connected with the anode of a light-emitting diode, the anode of the light-emitting diode is connected with POWER + through a toggle switch, and the cathode of the diode outputs a high-voltage switch signal; the anode of a diode in the low-voltage signal test circuit is connected with the anode of a light-emitting diode, the anode of the light-emitting diode is connected with a +5V POWER supply, the cathode of the light-emitting diode is grounded through a button switch, the anode of the diode outputs a low-voltage switch signal, a high-voltage switch signal is obtained by turning on a button switch on an operation panel of the test board, switching on a POWER + output high level and lighting a pull-down indicating LED lamp; the low switch signal switches on GND to output low level by toggling a twister switch on an operation panel of the test board, and lights a pull-up indicating LED lamp. .
The current output test module comprises an adjusting knob, the adjusting knob is connected with a control end of a voltage-controlled current regulation chip, an input end of the voltage-controlled current regulation chip is connected with POWER +, an output end of the voltage-controlled current regulation chip outputs 0-25mA current, the current can be output, the current adjusting knob is adjusted, current modulation voltage set by the voltage-controlled current regulation chip is input, and the voltage-controlled current regulation chip is controlled to output corresponding modulation current.
The voltage output testing module comprises a voltage buffer, the input end of the voltage buffer is connected with an adjusting knob, two ends of the adjusting knob are respectively connected with a +5V power supply and a ground, the output end of the voltage buffer outputs 0-5V voltage, the voltage can be adjusted to be output, the adjusting knob pulls up the +5V power supply, and the modulation voltage which is adjusted and divided in voltage is output after the voltage buffer passes through the buffering isolation effect of the buffer.
The resistance output test module adjusts the resistance of the resistance output test module through a knob adjusting resistor to serve as an output resistor, the adjustable resistor outputs, and an adjusting knob (an adjustable resistor) adjusts and outputs the resistor with the corresponding resistance value.
The DO input indicating module comprises a low-side DO input indicating circuit and a high-side DO input indicating circuit;
the low-side DO input indicating circuit is connected with a +5V power supply through the anode of the light emitting diode, and the cathode of the low-side DO input indicating circuit is connected with a low-side output port in the detected equipment; the low-side DO output module of the controller is triggered by a high level to output a low level, and the input test board lights the pull-up LED indicator lamp to be normally on.
The high-side DO input indicating circuit is connected with a high-side output port in the detected equipment through the anode and the cathode of the light emitting diode, the cathode of the high-side DO input indicating circuit is grounded, the high-side DO output module of the controller is triggered by a low level to output a high level, and the input test bench lights the pull-down LED indicating lamp to be normally on.
The PWM input indicating module comprises a low-side PWM output circuit and a high-side PWM output circuit, the low-side PWM output circuit is triggered by a PWM signal to output a PWM level, and the input test board lights a pull-up LED indicating lamp; the high-side PWM output circuit is triggered by a PWM signal to output a PWM level, the input test board is used for lighting the pull-down LED indicator lamp, the low-side PWM output module of the controller is triggered by the PWM signal to output the PWM level, the input test board is used for lighting the pull-up LED indicator lamp, and the LED can show light and shade changes along with the change of duty ratio.
A high-side PWM output module of the controller is triggered by a PWM signal to output a PWM level, an input test board lights a pull-down LED indicator lamp, and the LED can show light and shade changes along with the change of duty ratio.
The display consists of liquid crystal, a touch panel, a hardware circuit and software, wherein the hardware circuit provides necessary power supply requirements for the liquid crystal, the software drives the liquid crystal to be lightened and the touch screen to work, and the software is used for realizing the information display of different interfaces and the switching function of the interfaces.
Example (b): as shown in fig. 10, in order to operate the panel of the test station according to the present application,
output indication of the switching value of the controller is as follows:
Figure BDA0003134042070000071
the switching value output indication is divided into: low output indication, high output indication.
Figure BDA0003134042070000072
The total number of the low output instructions is 10, the low output instruction 1 is taken as an example to list the functions, and the rest 9 instructions are similar; when the controller ports AMP121-39(3. controller port function, enumerate port functions, please refer to) output low level, the low output indicator 1 lamp is lit, otherwise the lamp is off.
Figure BDA0003134042070000081
The high output instructions are 10 in total, taking high output instruction 1 as an example to list the functions, and the other 9 instructions are similar; when the controller ports AMP121-34 output a high level, the high output indicates that the 1 lamp is lit, otherwise the lamp is off.
And secondly, outputting an instruction for the controller PWM:
Figure BDA0003134042070000082
the PWM output indication is divided into: PWM low output indication, PWM high output indication.
Figure BDA0003134042070000083
The total number of PWM low-output instructions is 11, taking PWM low-output instruction 1 as an example, the functions are listed, and the other 10 instructions are similar; the PWM low output indicates that the 1 short circuit port is connected, the 1 and 2 interfaces are in short circuit, when the AMP121-28 of the controller outputs low and effective PWM signals, the brightness of the indicator light can be adjusted in real time according to the duty ratio of PWM, namely, the lamp is brighter when the duty ratio is larger, and the lamp is darker when the duty ratio is smaller.
Figure BDA0003134042070000084
The total number of the PWM high-output instructions is 11, the PWM high-output instruction 1 is taken as an example, the functions are listed, and the other 10 instructions are similar; the PWM high output indicates that the 1 short circuit port department, with 1 and 2 two interfaces short circuit, when controller port AMP121-83 output high effectual PWM signal, the luminance of pilot lamp can be adjusted in real time according to PWM's duty cycle, and the duty cycle is brighter the lamp more, and is darker the contrary.
Output for low switching value:
Figure BDA0003134042070000085
the total number of the low switching value outputs is 10, the low switching value output 1 is taken as an example, the functions are listed, and the rest 9 outputs are similar; when the toggle switch of the low switching value output 1 is pulled up, the corresponding indicator light is lighted, and the display>Switching value output->The low output 1 indicates "active", the output port of the panel low switching value output 1 outputs low level, the controller ports AMP121-76 output low level, otherwise the controller ports AMP121-76 output floating.
Output for high switching value:
Figure BDA0003134042070000091
the high switching value output is 10 in total, the function is listed by taking the high switching value output 1 as an example, and the rest 9 are similar; when the toggle switch of the high switching value output 1 is pulled up, the corresponding indicator light is lighted, and the display>Switching value output->The high output 1 indicates "active", the output port of the high switching value output 1 on the panel outputs high level, the controller ports AMP121-91 output high level, otherwise the controller ports AMP121-91 output floating.
And the output of a 0-5K omega resistor:
Figure BDA0003134042070000092
the total number of the 0-5K omega resistor outputs is 2, taking the 0-5K omega resistor output 1 as an example,enumerate their functions, the remaining 1 is similar;
Figure BDA0003134042070000093
calibration: short-circuit cap is short-circuited to calibration (three short-circuit holes, the leftmost two) at 0-5K omega resistor output 1 on the panel, and then the resistor output can be adjusted through knob, and display can be used>Resistance output->Resistance 1 (ohm) to observe the real-time adjusted resistance value;
Figure BDA0003134042070000094
and (3) outputting: at 0-5K Ω resistor output 1 on the panel, short cap is shorted to the output (three shorting holes, two right-most), the knob is not adjusted after calibration, the current output resistance is the current check value, and controller ports AMP121-105 output a calibrated resistance.
And sixthly, outputting voltage of 0-5V:
Figure BDA0003134042070000095
the total number of 0-5V voltage outputs is 15, the function is listed by taking 0-5V voltage output 1 as an example, and the rest 14 are similar; the voltage output 1 of 0-5V on the panel can be adjusted by the knob, and the display can be used>Voltage output->Voltage output 1 observes the regulated value, the output port at voltage output 1 of 0-5V outputs the corresponding regulated voltage, and controller ports AMP121-88 outputs a voltage of regulated voltage value.
And is output by a 0-1K omega resistor:
Figure BDA0003134042070000102
the total output of 0-1K omega resistor is 3, and the specific function refers to '0-5K omega resistor output'.
And the current output is 0-25 mA:
Figure BDA0003134042070000103
4 current outputs of 0-25mA are total, and the functions are listed by taking 0-25mA current output 1 as an example, and the other 1 current outputs are similar; the current output 1 of 0-25mA on the panel can be adjusted by the knob, and the display screen>Current output->The current output 1 observes the regulated value, the output port at the position of the current output 1 of 0-25mA outputs the corresponding regulated current, and the controller ports AMP121-50 outputs a current with a regulated current value;
ninthly is common Ground (GND):
Figure BDA0003134042070000104
the common Ground (GND) amounts to 6 for connection to the ground of the test bench, for example: the sensor is grounded.
Frequency output is r:
Figure BDA0003134042070000105
the total number of frequency outputs is 4, taking the frequency output 1 as an example, the functions are listed, and the other 3 are similar; the frequency output 1 on the panel can be adjusted by the knob, and the display>Frequency output->The frequency output 1 observes the adjusted value, the output port at the frequency output 1 outputs the corresponding adjusted frequency value, and the controller port AMP121-50 outputs a frequency signal of the adjusted frequency value;
Figure BDA0003134042070000101
are KEY _ START and KEY _ ACC
Figure BDA0003134042070000106
When the KEY _ START button switch is dialed down, the KEY _ START indicator light is lighted, and the AMPs 121-30 output high level; otherwise, the AMP121-49 outputs are suspended, and the lamp is turned off;
Figure BDA0003134042070000107
when KEY \ uWhen the ACC button switch is dialed down, a KEY _ ACC indicator lamp is lightened, and AMPs 121-109 output high level; otherwise, the output of AMP121-109 is suspended and the lamp is turned off;
Figure BDA0003134042070000111
and (3) regulating the voltage output of the system:
Figure BDA0003134042070000112
this function is used for debugging, and is not described.
Figure BDA0003134042070000113
And power supply outputs for 5V, 12V and 24V:
Figure BDA0003134042070000115
the 5V, 12V and 24V power supply outputs share 2 paths of outputs in each group, and the total output is 6 paths.
Figure BDA0003134042070000114
Communication interface extension
Figure BDA0003134042070000116
The total number of the communication interface extensions is 3, from left to right, the CAN1 communication interface extensions, the CAN2 communication interface extensions and the LAN \ serial port communication interface extensions are respectively provided, and the interfaces adopt standard RS-232 communication interfaces.
Figure BDA0003134042070000117
CAN1 communication interface extension: the first RS-232 communication interface is from left to right, and the AMP121-58 port of the controller is communicated with the 9-1, 9-4 and 9-7 ports of the communication interfaces; the port of the controller AMP121-59 is communicated with 9-2, 9-5 and 9-8 of the communication interface; the communication interface 9-6 outputs +24V, the communication interface 9-9 outputs +12V, and the communication interface 9-3 outputs GND.
Figure BDA0003134042070000118
CAN2 communication interface extension: the controller AMP121-60 is communicated with the communication interfaces 9-1, 9-4 and 9-7 of the second RS-232 communication interfaces from left to right; the controller AMP121-61 is communicated with the communication interfaces 9-2, 9-5 and 9-8; the communication interface 9-6 outputs +24V, the communication interface 9-9 outputs +12V, and the communication interface 9-3 outputs GND.
Figure BDA0003134042070000119
LAN \ serial port communication interface expansion: the third RS-232 communication interface from left to right is connected with the controller AMP121-62 and 9-1 of the communication interface; the controller AMP121-81 is connected with the communication interface 9-2; the controller AMP121-78 is connected with the communication interface 9-4; the controller AMP121-77 is connected with the communication interface 9-5; the controller AMP121-80 is connected with the communication interface 9-7; the controller AMP121-79 is switched on with 9-8 of the communication interface.
As shown in fig. 11 and 12, the test station controller port employs a 121-core connector. The controller port function table is
Core port definition of watch 181
Figure BDA0003134042070000121
Table 240 core port definition table
Figure BDA0003134042070000131
Controller port noun interpretation
Figure BDA0003134042070000132
GND: the controller is grounded;
Figure BDA0003134042070000133
+ 24V: the controller is powered by 24V;
Figure BDA0003134042070000134
CANx _ L: CAN bus low port.
Figure BDA0003134042070000135
CANx _ H: high port of CAN bus.
Figure BDA0003134042070000136
RXD: data port is received in serial ports communication
Figure BDA0003134042070000137
TXD: data port for serial communication
Figure BDA0003134042070000138
Freq _ Outx frequency output port
Figure BDA0003134042070000141
Vol _ Outx 0-5V voltage output port
Figure BDA0003134042070000142
OUT _ CURX 0-25mA current output port
Figure BDA0003134042070000143
Vol _ Outx 0-5V voltage output port
Figure BDA0003134042070000144
IN _ DOHx high input indicating port
Figure BDA0003134042070000145
IN _ DOLx low input indicating port
Figure BDA0003134042070000146
High switching value output port
Figure BDA0003134042070000147
Low switching value output port
Figure BDA0003134042070000148
IN _ PWMH1 high PWM input indicating port
Figure BDA0003134042070000149
IN _ PWMLx low PWM input indicates port.

Claims (9)

1. The utility model provides an integrative hard software function test system of engineering machine tool display and control which characterized in that: the device comprises an acquisition control unit, a touch screen display and a 220V power supply, wherein the acquisition control unit is communicated with the touch screen display through a CAN bus, and the 220V power supply is converted into a plurality of power supplies with different voltages through a power supply conversion module in the acquisition control unit to respectively supply power to a test module in the acquisition control unit;
the test module comprises a DC voltage output test module, a frequency signal output test module, a high-low switch signal output test module, a current output test module, a voltage output test module, a resistance output test module, a DO input indication module and a PWM output indication module which are respectively connected with the touch screen display;
the DC voltage output testing module, the frequency signal output testing module, the high-low switching signal output testing module, the current output testing module, the voltage output testing module, the resistance output testing module, the DO input indicating module and the PWM output indicating module are respectively provided with a connecting port with the tested equipment.
2. The engineering machine display and control integrated hardware and software function testing system of claim 1, wherein: the DC voltage output test module comprises two groups of switch voltage stabilizing circuits, wherein the input ends of the two groups of switch voltage stabilizing circuits are connected with a power supply, and the other ends of the two groups of switch voltage stabilizing circuits respectively output +5V and +12V power supplies and are grounded.
3. The engineering machine display and control integrated hardware and software function testing system of claim 1, wherein: the frequency signal output test module comprises a chip IC, the input end of the chip IC is connected with an AD sampling chip, the output end of the chip IC is connected with the transport amplifier, the input end of the AD sampling chip is connected with the adjusting knob, and the output end of the operational amplifier outputs a frequency signal.
4. The engineering machine display and control integrated hardware and software function testing system of claim 1, wherein: the high-low switch signal output test module comprises a high-voltage signal test circuit and a low-voltage signal test circuit, and the high-voltage signal test circuit and the low-voltage signal test circuit both comprise a diode and a light-emitting diode; the anode of a diode in the high-voltage signal test circuit is connected with the anode of a light-emitting diode, the anode of the light-emitting diode is connected with POWER + through a toggle switch, and the cathode of the diode outputs a high-voltage switch signal; the anode of a diode in the low-voltage signal test circuit is connected with the anode of a light-emitting diode, the anode of the light-emitting diode is connected with a +5V power supply, the cathode of the light-emitting diode is grounded through a toggle switch, and the anode of the diode outputs a low-voltage switch signal.
5. The engineering machine display and control integrated hardware and software function testing system of claim 1, wherein: the current output test module comprises an adjusting knob, the adjusting knob is connected with the control end of the voltage-controlled current regulating chip, the input end of the voltage-controlled current regulating chip is connected with POWER +, and the output end of the voltage-controlled current regulating chip outputs 0-25mA current.
6. The engineering machine display and control integrated hardware and software function testing system of claim 1, wherein: the voltage output test module comprises a voltage buffer, the input end of the voltage buffer is connected with an adjusting knob, the two ends of the adjusting knob are respectively connected with a +5V power supply and the ground, and the output end of the voltage buffer outputs 0-5V voltage.
7. The engineering machine display and control integrated hardware and software function testing system of claim 1, wherein: the resistance output test module adjusts the resistance of the resistance output test module through a knob to serve as an output resistor.
8. The engineering machine display and control integrated hardware and software function testing system of claim 1, wherein: the DO input indicating module comprises a low-side DO input indicating circuit and a high-side DO input indicating circuit;
the low-side DO input indicating circuit is connected with a +5V power supply through the anode of the light emitting diode, and the cathode of the low-side DO input indicating circuit is connected with a low-side output port in the detected equipment;
the high-side DO input indicating circuit is connected with a high-side output port in the detected equipment through the anode and the cathode of the light emitting diode, and the cathode of the high-side DO input indicating circuit is grounded.
9. The engineering machine display and control integrated hardware and software function testing system of claim 1, wherein: the PWM input indicating module comprises a low-side PWM output circuit and a high-side PWM output circuit, the low-side PWM output circuit is triggered by a PWM signal to output a PWM level, and the input test board lights a pull-up LED indicating lamp; the high-side PWM output circuit is triggered by a PWM signal to output a PWM level, and the input test board lights the pull-down LED indicator lamp.
CN202110713924.6A 2021-06-25 2021-06-25 Engineering machinery display and control integrated hardware and software function test system Pending CN113311277A (en)

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