84results about How to "Add test function" patented technology

The invention provides a modularized open PCBA (Printed Circuit Board Assembly) functional circuit test platform, system and method. The quality of a PCBA product is effectively controlled by using a half-automatic test manner. When a test table uses a needle bed and a relay switching group controlled by a single chip microcomputer to test different PCBAs, probes of the needle bed are reconfigured, and then one ends of the probes are connected with a relay, so that the expansibility is improved. In view of the system reusability, the test table matched with one type of the PCBA is pre-manufactured. When the PCBA is tested by only using the corresponding test table and opening an attest file, the test efficiency is greatly improved. A test instrument can be replaced according to test demands, so as to expand a system test function. The modularization open PCBA functional circuit test platform is a core of an entire test platform to control the operation state of the entire test process and is used for judging and recording the test content and result of each step, so that the test result is finally obtained. The modularized open PCBA functional circuit test platform is convenient to store and output the data.

The invention discloses a lever type tester for tension and compression rheology of rock. The lever type tester comprises a lever bracket, a primary lever, a secondary lever and a loading plate. The primary lever is hinged on the lever bracket; the secondary lever is formed by detachable connection from two lever segments; a first end of the secondary lever is hinged on the bracket lever, while a second end of the secondary lever is connected with the primary lever; a second fulcrum device is connected on the loading plate; and one lever segment of the secondary lever, connected with the primary lever, is detachably connected with the second fulcrum device. The lever type tester has the advantages that the load can be amplified at two stages by the primary lever and the second lever, the application of a big test load on a rock sample under the conditions of few weights and short levers is realized and the loading range is expanded; a compression rheology test of rock can be realized through the lever type tester under the condition that the second fulcrum device is removed; and a tension rheology test of rock can be realized through the lever type tester under the condition that the second fulcrum device is installed and the two lever segments of the secondary lever are detached from each other, thus the testing functions of the lever type tester are increased.

The invention provides an automatic test system. The automatic test system comprises a communication module which is connected with a device to be tested so as to perform data communication with the device to be tested, a function module used for defining test items of the device to be tested and test processes corresponding to the test items, a loading module used for loading the test items to be tested of the device to be tested as current test items, a display module used for displaying test data and test results, and a processing module used for calling the information of the test items loaded by the loading module to execute test processes corresponding to the test items; and the communication module is in data communication with the device to be tested, so that a test be completed, and then, the test data are transmitted to the display module to be displayed. The invention also provides an automatic test method. According to the automatic test system and method of the invention, modular design is adopted, and therefore, test functions can be increased in follow-up stages, and therefore, scalability is high, test efficiency can be improved, and the quality of outgoing products can be improved.

The disclosure relates to a process for making an electric testing of electronic devices DUT, of the type comprising the steps of: connecting at least one electronic device DUT to an automatic testing apparatus or ATE apparatus suitable for making the testing of digital circuits; sending, through said ATE apparatus, control signals for the electric testing to said electronic device DUT. Advantageously, the process also comprises the steps of: making the electric testing of said electronic device DUT through at least one reconfigurable digital interface RDI connected to said ATE apparatus through a dedicated digital communication channel and comprising a limited number of communication or connection lines strictly appointed to the exchange of the testing information; and sending from said electronic device DUT to said ATE apparatus response messages, if any, containing measures, failure information and data in response to said control signals and through said digital communication channel.

A computer-based automated testing framework tests a multimedia application (such as a Flash application running in a player module) that includes one or more Flash objects by executing test scripts in an external Java-based test module that uses proxy objects in the test module to represent the Flash objects in the player module. Correspondence between the proxy object and Flash objects is maintained by translating the first test script into a command, sending the command from the external test module to the player module, interpreting the command by accessing a lookup table at the player module, and then returning a value to the external test module in response to the command.

The invention relates to an external endurance test bed with two covers for an automobile, which comprises a bench and the following components: a master cylinder arranged in the bench, a first upwards-pulling rope one end of which is fixedly connected with a piston rod of the master cylinder, while the other end is connected with an automobile cover; a countercylinder arranged in the bench, and the end part of the piston rod of which is connected with one upwards-pulling movable pulley; a second upwards-pulling rope one end of which is fixed on the bench and passes through the upwards-pulling movable pulley and at least one upwards-pulling dead pulley, while the other end is connected with the automobile cover; a first downwards-pulling rope one end of which is fixedly connected with the piston rod of the master cylinder and passes through at least one transitional dead pulley, while the other end is connected with a downwards-pulling movable pulley; and a second downwards-pulling rope one end of which is fixed on the bench and passes through the downwards-pulling movable pulley and at least one downwards-pulling dead pulley, while the other end is connected with the automobile cover. The external endurance test bed has the advantages of high reliability, low cost and small volume.

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

The invention provides a motor stalling testing device, which comprises a testing frame (10), a rotating disc (20), a locking part (40) and a positioning part (30), wherein the rotating disc (20) sleeves the output shaft of a to-be-tested motor (70), the rotating disc (20) rotates along with the output shaft of the to-be-tested motor (70), and the rotating disc (20) is provided with multiple fixing grooves (21) along the circumference; the locking part (40) is provided with a locking position and an unlocking position; the positioning part (30) is arranged on the testing frame (10) in a rotatable mode, the positioning part (30) sleeves the rotating disc (20) and is arranged coaxially with the rotating disc (20), the locking part (40) is arranged on the positioning part (30), and the different positions of the positioning part (30) on the testing frame (10) are adjusted to carry out stalling test on the multiple positions of the to-be-tested motor (70). The technical scheme of the invention can effectively solve the problem that stalling measurement can only be carried out on one position of the rotation shaft of the motor in the prior art.

The invention relates to a programmer for MTM anti-fuse PROM. According to the invention, basic air detection, reading, programming and verification functions of a PROM circuit are included, and a test function of a redundancy anti-fuse unit of the MTM anti-fuse PROM is also increased. Functions under normal mode of the programmer can satisfy basic operations of the PROM circuit for users, and functions under test mode can preprogram and screen PROM in advance under the condition of not influencing normal anti-fuse array of PROM so as to remove defective circuits and raise programming success rate and the MTM anti-fuse PROM and data reliability after the programming.

The invention provides a universal computer product testing system and method. The system comprises a mechanical arm, a mechanical arm controller, a force sensor, a terminal tool, a clamp, a standard table facet and a master control computer. The clamp is formed by a plurality of clamp units with C-shaped contour characteristics. The clamp has the advantages of being capable of performing suspension clamping, provided with various combination changes, high in adjusting flexibility and good in rigidity and is matched with the mechanical arm, the force sensor and the terminal tool to complete various tests, so that function and expansibility defects of traditional test equipment are overcome. The method comprises the steps of first, calculation method decomposition; second, test action planning; third, intermediate parameter measurement; fourth, test action running and result processing. By calculation process decomposition, parameter measurement method base establishment and the like, the testing method can be applied to various test tasks of computer product use reliability universally, and test results are accurate and credible.

The invention provides a test case generation method and device and a server. The method comprises the steps of obtaining a test demand of a to-be-tested business object; setting a plurality of test parameters according to test requirements; wherein each test parameter comprises a plurality of parameter values; generating a plurality of test cases and an expected result corresponding to each testcase according to the plurality of parameter values corresponding to each test parameter; wherein each test case comprises at least one parameter value of each test parameter. According to the test case generation method and device, the corresponding expected result is generated while the test case is generated, the test requirements of white box tests and the like needing the expected result of the test case are met, and therefore the test function of the test case is expanded.

The invention provides an in-situ test system for mechanical properties of a nano material. The in-situ test system comprises a scanning electronic microscope, a scanning probe test unit, a control unit and a computer; the scanning probe test unit comprises a base, an adjusting table arranged at one side of the upper surface of the base, and a measuring mechanism arranged at the other side of the upper surface of the base; the scanning electronic microscope comprises an electron microscope pole shoe, and the adjusting table is provided with a sample table, an X-axis adjusting apparatus, a Y-axis adjusting apparatus and a Z-axis adjusting apparatus; the measuring mechanism comprises a laser light path adjusting apparatus, a probe foundation support arranged on the base, and a probe arranged on the probe foundation support, the probe is positioned below the electron microscope pole shoe, and the laser light path adjusting apparatus is used for collimating and focusing laser. By adopting the in-situ test system and the in-situ test method, an acting process of the scanning probe and a sample and an evolution process of a sample microstructure under a physical mechanical function of an external field in the test process can be actually observed in site, and micro images of a series event and mechanical property test data are transmitted to a computer.

The invention provides a signal analysis interface intelligent matching method based on a switching matrix. Low-frequency signal test matching is automatically achieved as a hardware matrix switch is combined with software to perform pre-judgment and control; according to the requirement of a tested signal, hardware includes multiple multiplex switches, single-pole single-throws, double-pole double-throws and the like is involved in forming the switching matrix so as to achieve the aim of increasing or decreasing the number of tesingt ports and later-class analysis channels and realize the function of multiple-parameter measurement on a single-path signal and on a multi-path signal. The tested signal undergoes rough testing and comparison, finally, the automatic identification function of a coupling manner and a measuring range is achieved and a signal channel is automatically divided. According to the signal analysis interface intelligent matching method based on the switching matrix, a matrix switch and the concept of intelligent control are introduced, hardware resources can be saved and in addition, the testing ports can be flexibly expanded. The testing function is added, the automatic identification function of multiple coupling manners, multiple kinds of impedance and multiple kinds of measurement ranges can be realized and design is flexible.

The invention method is to build wiring passage channel, wire incoming guid hole, testing hole, wire cutting hole, wire outletting hole, wire incoming hole sign and gland pool. The wire incoming guide hole, wiring passage channel, wire outletting hole and testing hole are at same axle centre, a press-cut lid is set in upper part of the gland pool, fixed plug and jointing clip and fit in the press-cut lid, pedestal is fixed in locating slot of wire position line frame, after finishing core wir threading operation in coming and going direction, to press the press-cut lid by a tool to make it completely into the gland pool, the insulatnig layer of core wire is broken by wire cutting clip set relatively parallel in pairs, metal wire in the core wire is squeezed into mouth of wire cutting clip and is connected with jointing clip.

The invention discloses a silicon wafer-level frequency testing method. Frequency testing is performed on a tester which is special for testing a memory type chip, namely a memory tester, by using a fail address memory resource of the tester. The method at least comprises the following steps of: selecting a scanning frequency to scan a waveform to be tested; selecting a reference voltage and converting an analogue signal obtained by scanning into a digital signal; storing the digital signal by using the fail address resource; and processing the stored data, calculating number of cycles in a fixed time and finally calculating the frequency. In the method, the memory type tester is directly utilized to test the frequency, so the testing function of the memory tester is expanded, the utilization rate is improved and the testing cot is reduced.

The invention discloses a sub-element test method and device, which belong to the technical field of network. The method comprises the steps of acquiring target sub-element identifiers in a first page; determining a target set according to the target sub-element identifiers; extracting target sub-elements from the target set according to determined index values, wherein the index values are used for indicating positions of the target sub-elements in the target set; carrying out simulation operation on the target sub-elements, and obtaining a test result of the simulation operation. According to the sub-element test method and the device provided by the invention, multiple sub-elements with same classification in different elements can be integrated in the same target set according to the target sub-element identifiers, so that the positions of the sub-elements in the target set are indicated through the index values, the target sub-elements are accurately identified and positioned according to the determined index values so as to be further tested, and a test function is extended.

The invention discloses control motor test equipment, and particularly relates to the field of motor testing. The control motor test equipment comprises a bottom plate, wherein a sensor base is fixedly mounted on one side of the top of the bottom plate, a torque rotating speed sensor is fixedly mounted on the top of the sensor base, the left end and the right end of the torque rotating speed sensor are fixedly connected with a first coupler and a second coupler through shafts respectively, the end, which is away from the torque rotating speed sensor, of the second coupler is fixedly connected with a speed reducer, and the side, which is away from the second coupler, of the speed reducer is fixedly connected with a load. According to the invention, through rotation of arc-shaped through holes, pressing rods can slide in limiting sliding grooves, and when a gear ring rotates clockwise, the three pressing rods make centripetal motion, so that a motor shell is clamped in three directions, the function that a to-be-tested motor is automatically clamped and fixed by the test equipment is achieved, the steps of installing the to-be-tested motor by workers are greatly simplified, the installation time is shortened, and the test efficiency is improved.

The invention discloses a combination device for testing large current aging and vacuum degree of a vacuum arc extinguish chamber. An aging switch of an aging bench (1) is connected with a conversion cylinder (6); a pneumatic switch of the aging bench (1) is connected with a clamping cylinder (4) and a pull-down cylinder (5); a pair of conductive blocks A and B and another pair of conductive blocks C and D are arranged on the conversion cylinder (6); the conductive A is connected with an aging clip line (7); the conductive B is connected to the aging bench (1) through an aging line (8); the conductive C is connected with the aging clip line (7); the conductive D is connected to a vacuum gauge (2) through a high-voltage line (9); and the vacuum gauge (2) is connected with a contact Ja-1, acontact Ja-2 and a contact Ja-4 of an alternating current contactor Ja respectively. In the invention, test functions of large current aging and vacuum degree are combined, so the conductive blocks at a static end are prevented from being collided in an original test process, the labor intensity of an operator is reduced, the working time is shortened, and the production efficiency is improved.

The invention discloses a clock intelligent tester, and belongs to the technical field of clock test. The clock intelligent tester comprises a tester shell. Volume and power buttons are inserted in the left side wall of the tester shell. A display screen is embedded in the front wall of the tester shell. Mode control buttons and a parameter adjusting knob are transversely arranged in the middle part of the front wall of the tester shell. The mode control buttons and the parameter adjusting knob are arranged at the lower part of the display screen. The mode control buttons are arranged at the upper side of the parameter adjusting knob. Sound playing holes are transversely and uniformly arranged at the top part of the front wall of the tester shell. According to the clock intelligent tester, accurate time obtained by satellite positioning acts as reference time, the measurement accuracy can be fundamentally enhanced, the current value and the voltage value in the clock can be measured through mode adjustment, the test function of the tester can be enhanced, and the test personnel are enabled to accurately acquire measurement information through simultaneous display of image display and voice play.

The invention discloses a high-precision DAC testing system based on an FPGA, and belongs to the field of semiconductor chip testing. The high-precision DAC test system based on the FPGA comprises an FPGA development board, a power supply, a DAC test board, a spectrum analyzer, an oscilloscope and a digital multimeter, the power supply is connected with the FPGA development board and the DAC test board and provides stable voltage for the FPGA development board and the DAC test board; the FPGA development board sends parallel digital signals and clock signals to the DAC test board, and the DAC test board converts the digital signals into analog quantity and outputs the analog quantity; and the DAC test board is respectively connected with the spectrum analyzer, the oscilloscope and the digital multimeter, and is used for analyzing the output analog quantity. The FPGA design technology is adopted, static parameter testing and dynamic parameter testing of the digital-to-analog converter can be completed, the testing efficiency of the digital-to-analog converter is improved. Meanwhile, the testing function can be expanded according to the actual testing requirement, and the testing cost is low.

The invention discloses a method of automated online program programming of an embedded single-chip microcomputer. The method comprises the steps of: receiving and storing a to-be-programmed-chip fileby a system; starting to program after crimping completion of a target board is detected by the system; after the system detects programming success of the target board, reporting a result to a database, and continuing to program; and turning to repairing or replacing the target board after the system detects programming failure of the target board. The invention also discloses the system of automated online program programming of the embedded single-chip microcomputer. The system includes a file receiving module and a programming module. An entire process thereof does not need manual participation. An operator only needs to put the target board into a device and then wait for a programming result, the result is visual and straightforward, human factor interference is circumvented, and production efficiency is effectively improved. Only programming devices need to be added when expansion of multi-station parallel-operations is needed, an expansion fee is much lower than that of PC hosts, production efficiency is also higher at the same time, and the method and the system are widely used in the field of single-chip microcomputers.

The invention discloses a detection system of a sulfur hexafluoride density relay. The detection system having the precise calibration function is capable of calibrating temperature compensation values of multiple groups of density relays once and is capable of recycling sulfur hexafluoride gas. The detection system is composed of a calibration assembly and a high-and-low-temperature test box. Thehigh-and-low-temperature test box consists of a box body, a refrigeration system, a refrigeration system box, a compressor, a control module and an electrical cabinet; the electrical cabinet is arranged at one side of the box body; a control module and a memory are arranged in the electrical cabinet; and a compressor and a refrigeration system are arranged in the refrigeration system box. The boxbody is divided into a test chamber, a return air passage and a refrigeration system box by a lower chamber bottom plate and a test chamber sidewall; a condenser, a heater and a centrifugal fan are arranged in the return air passage; and an air outlet and a return air outlet are formed in the test chamber sidewall. A test frame for supporting density relays and a standard pressure gauge are arranged at a test rack. The calibration assembly includes a controller.

The invention discloses a multifunctional platform device for testing electrical properties of solid oxide. The multifunctional platform device comprises a heating unit, a supporting platform, an external connection box, a testing base, a sample supporting assembly, a protective sleeve and testing accessories, wherein the heating unit is fixedly arranged on the supporting platform; the low part ofthe bottom of the testing base is connected with the external connection box; a plurality of electrode and thermocouple interfaces which are connected with external testing instrument equipment as well as internal and external air inlet interfaces and internal and external air outlet interfaces which are used for controlling a testing atmosphere are formed in the external connection box; one endof the sample supporting assembly, one end of the protective sleeve and one end of each testing accessory are respectively in sealing connection with corresponding interfaces in the testing base; thetesting accessories and the sample supporting assembly are both located in the protective sleeve; the other ends, which are used for accommodating testing samples, of the protective sleeve, the testing accessories and the sample supporting assembly are located in the heating unit. According to the multifunctional platform device disclosed by the invention, the operation is simple, the cost is low,space occupation volume is small, the running is stable and reliable, multiple function tests can be carried out on a sample, the universality is good, the testing time can be greatly saved, and thetesting efficiency can be increased.

The application discloses a chip testing device and system. The chip testing device comprises an upper computer interface connected with an upper computer and used for receiving a control signal fromthe upper computer so as to control a testing mode of the chip; a testing interface connected with a chip and used for providing a testing signal corresponding to the testing mode for the chip; a light source interface connected with an external light source and used for providing a light source signal for the external light source; and a control module connected with the upper computer interface,the testing interface and the light source interface, wherein the control module controls the light source signal according to the testing signal, so that the external light source and a testing timesequence of the chip are synchronously started and closed. The light source interface is added on the testing device disclosed by the application, and the testing function of the chip testing deviceis expanded through the connection of the light source interface and the external light source.

The invention provides a multi-zone integrated seawater environment test device. The multi-zone integrated seawater environment test device comprises a device main body, wherein the device main body is of a combined frame structure, and comprises a full-immersion zone test frame, a tidal range zone test frame, a splashing zone test frame and a sample frame, each zone test frame is loaded with a sample frame, the full-immersion zone test frame is arranged at the lowermost part of the device, the tidal range zone test frame is arranged in the middle of the device, the lower end of the tidal range zone test frame is fixed on the full-immersion zone test frame, and the splashing zone test frame is fixed on the tidal range zone test frame. The multi-zone integrated seawater environment test device is simple and compact in structure, can simultaneously conduct a large number of material environment tests, can carry out environmental factor testing and material in-situ electrochemical testingsimultaneously, and can receive test data synchronously in a laboratory. By means of the multi-zone integrated seawater environment test device, evaluation and research of the conventional corrosionaging performance of the materials can be carried out in the open sea, related data are obtained, and basic data guarantee is provided for the material selection and design of open sea equipment and the conduction of indoor simulated marine environment corrosion research.

The invention provides a charging pile automatic detection system and method. The charging pile automatic detection system comprises a charging pile TCU simulation module, an interconnection and intercommunication detection module, an industrial control display module and a fault diagnosis module, wherein the charging pile TCU simulation module communicates with a charging pile and is used for simulating a TCU to automatically control the charging pile to start, stop and return to the initial charging state, collecting charging pile alarm and fault information and uploading the charging pile alarm and fault information to the industrial control display module; the interconnection and intercommunication detection module is connected with the charging pile through a charging gun and is usedfor simulating an interoperation test project to test the charging pile; the industrial control display module is responsible for starting a detection process, displaying the detection process and stopping the detection process, receiving and automatically summarizing the charging pile alarm and fault information and the test result uploaded by the interconnection and intercommunication detectionmodule, and generating a currently detected database; and the fault diagnosis module is used for pushing a fault diagnosis scheme according to the currently detected database and guiding the detectionpersonnel to change corresponding components in the charging pile for repeated detection.

The invention discloses a radiator performance wind tunnel test device capable of simulating a multiphase flow air inlet environment, which belongs to the technical field of radiator performance testdevices. The test device provided by the invention comprises a sand and dust generation device, a rain generation device, an upstream section, a radiator, a hot side circulation system, a downstream section, a separation and recovery section, an induced draft fan and a measurement controller. Performance wind tunnel tests of radiators in sand and dust environments with different sand and dust concentrations and different sand grain temperatures, performance wind tunnel tests of radiators in rain environments with different rainfall amounts and different raindrop temperatures and performance wind tunnel tests of radiators in sand and dust and rain composite environments can be carried out, and meanwhile, performance wind tunnel tests of radiators in conventional natural environments can becarried out, so that the applicability is wide; the parameter range of test conditions is large, and the test function is broadened; sand grains and water can be recycled, and the economical efficiency is high; air exhaust is thorough, and feasibility is high; the structure is compact, and the occupied area is saved.

The invention method is to build wiring passage channel, wire incoming guid hole, testing hole, wire cutting hole, wire outletting hole, wire incoming hole sign and gland pool. The wire incoming guide hole, wiring passage channel, wire outletting hole and testing hole are at same axle centre, a press-cut lid is set in upper part of the gland pool, fixed plug and jointing clip and fit in the press-cut lid, pedestal is fixed in locating slot of wire position line frame, after finishing core wir threading operation in coming and going direction, to press the press-cut lid by a tool to make it completely into the gland pool, the insulatnig layer of core wire is broken by wire cutting clip set relatively parallel in pairs, metal wire in the core wire is squeezed into mouth of wire cutting clip and is connected with jointing clip.

The invention provides a device for simulating the walls and the bottom of towing tanks, which belongs to the technical field of tank test. The device mainly comprises a tank wall support frame, a tank wall simulation apparatus and a tank bottom simulation apparatus. The tank wall support frame is directly fixed on the tank wall. The tank wall simulation apparatus is fixed on the tank wall supportframe by an aluminum profile and a right angle connector. The bottom of the tank wall simulation apparatus is arranged with the tank bottom simulation apparatus, and is composed of a tank bottom apparatus and a lifting apparatus. The upper end of the lifting apparatus is connected with the tank wall support frame, and the lower end is connected with the tank bottom apparatus. The device for simulating the walls and the bottoms of towing tanks is mainly used for simulating the walls and the bottoms of tanks such as towing tanks and deepwater tanks, and is convenient for shallow water tests andblocking tests of structures on the basis of existing tank laboratories. The device has the advantages of fast installation speed, simple operation, good stability, various functions, low cost and the like, which effectively expands the test functions of existing tanks, and makes tanks develop in the direction of functional diversities.

The invention provides an electric energy meter comprehensive tester, which saves social resources, simplifies work links for staff of power supply departments, and improves working efficiency. The electric energy meter comprehensive tester comprises a slave machine and a host machine, wherein the slave machine comprises a remote control operational amplifier, a 16-bit multichannel ADC, a measurement core, a GPS module and a wireless module, the remote control operational amplifier, the 16-bit multichannel ADC and the measurement core are connected in sequence, and the GPS module and the wireless module communicate with the measurement core; and the host machine comprises an active compensation current transformer, an active compensation circuit, a 485-to-232 communication module, a man-machine interface industrial control computer and an error calculation unit, the active compensation current transformer and the active compensation circuit are connected with the remote control operational amplifier through a relay selection module, the measurement core communicates with the man-machine interface industrial control computer via the 485-to-232 communication module, output of the measurement core is connected with the error calculation unit, and the error calculation unit communicates with the man-machine interface industrial control computer via the 485-to-232 communication module.