Driver automatic detection circuit

Abstract

The invention relates to the technical field of instrument detection, and discloses a driver automatic detection circuit, which comprises a power supply unit, a plurality of control units and a plurality of execution units, and is characterized in that the power supply unit is respectively connected with all the control units and all the execution units; one end of each control unit is connected with the upper computer, and the other end of each control unit is connected with the corresponding execution unit. By setting up a plurality of mutually independent detection channels, synchronous parallel detection of a plurality of to-be-detected driving modules is supported, and the detection efficiency is remarkably improved. In addition, through efficient cooperative linkage of the control unit and the execution unit, automatic butt joint of detection interfaces, automatic execution of a detection process and automatic judgment of a detection result can be achieved in the whole process, manual subjective intervention and judgment are not needed in the whole process, the uniformity of detection standards is effectively guaranteed, and the accuracy and reliability of the detection result are remarkably improved.

Description

Technical Field

[0001] This invention relates to the field of instrument testing technology, and specifically to an automatic testing circuit for a driver. Background Technology

[0002] As a core component of precision instruments, the performance of the instrument pump directly determines its operational stability, reliability, and service life. During the production process of instrument pumps, the drive module requires rigorous testing to ensure that all functions are normal and to prevent the instrument pump from malfunctioning due to drive module failure.

[0003] Currently, the testing of instrument pump drive modules is mostly done manually. During the testing process, operators need to connect the power interface, functional interface, communication interface, and load components one by one, checking parameters such as I / O port status, communication function, and load capacity. The module's qualification is determined by manually operating switches and reading data displayed on instruments. This testing method has significant limitations: firstly, it is inefficient, requiring repeated wiring and disconnection for each module, which is far too slow for large batches in industrial production; secondly, it lacks accuracy, relying on subjective human judgment and lacking standardized quantitative criteria, making it difficult to guarantee the consistency and accuracy of the results. Summary of the Invention

[0004] This invention provides an automatic detection circuit for a driver to solve the problems of low detection efficiency and insufficient accuracy of instrument pump drive modules in the prior art.

[0005] This invention provides an automatic driver detection circuit, the circuit comprising: a power supply unit, multiple control units, and multiple execution units, wherein the control units and the execution units are configured in a one-to-one correspondence, wherein... The power supply unit is connected to all control units and all execution units respectively, and is used to provide power to all control units and all execution units; One end of each control unit is connected to the host computer, and the other end of each control unit is connected to the corresponding execution unit. The control unit is used to receive control commands issued by the host computer and drive the corresponding execution unit to perform detection actions according to the control commands. At the same time, the control unit collects the detection data of the driver to be detected and uploads the detection data to the host computer.

[0006] This invention provides an automatic driver detection circuit, including a power supply unit, multiple control units, and multiple execution units. It can establish multiple independent detection channels, supporting synchronous parallel detection of multiple driver modules under test, significantly improving detection efficiency. Furthermore, through efficient collaboration between the control units and execution units, it can achieve fully automated interface connection for detection, automated execution of the detection process, and automated judgment of detection results. No manual intervention or judgment is required throughout the process, effectively ensuring the uniformity of detection standards and significantly improving the accuracy and reliability of detection results.

[0007] In one optional embodiment, the power supply unit includes: a main control switch, multiple power supply sub-control switches, a first AC / DC converter, and multiple second AC / DC converters, wherein the power supply sub-control switches are configured in a one-to-one correspondence with the second AC / DC converters, wherein... The main control switch is connected in series to the L and N terminals of the mains power supply, and the output terminal of the main control switch is connected to the input terminals of the first AC / DC converter and all the second AC / DC converters respectively. Each of the power supply sub-control switches is connected in series between the input terminal of the corresponding second AC / DC converter and the output terminal of the main control switch; The output of the first AC / DC converter is connected to all control units and all execution units, and the output of each second AC / DC converter is connected to the control unit and execution unit of its corresponding detection channel.

[0008] In one optional embodiment, the power supply unit further includes a global power indicator light, which is connected in series between the output terminal of the main control switch and the input terminal of the first AC / DC converter, for feedback on the power supply status of the detection circuit.

[0009] In one optional implementation, each control unit includes: a first communication converter, a first relay I / O module, and an ART module, wherein, One end of the first communication converter is connected to the first USB port of the host computer, and the other end of the first communication converter is connected to the communication ports of the first relay IO module and the ART module respectively. It is used to convert the USB format control commands issued by the host computer into RS485 signals and send them to the first relay IO module and the ART module. At the same time, it converts the detection data uploaded by the first relay IO module and the ART module into USB signals and feeds them back to the host computer. The control port of the first relay I / O module is connected to the corresponding execution unit and is used to parse the host computer control instructions and generate control signals to drive the corresponding execution unit to perform detection actions; at the same time, the signal acquisition port of the first relay I / O module is connected to the digital port of the driver function interface and is used to acquire the digital detection data of the driver under test. The signal input terminal of the ART module is connected to the analog port of the driver function interface to receive analog detection data from the driver under test.

[0010] In one optional implementation, each of the control units further includes: a second communication converter and a third communication converter, wherein, One end of the second communication converter is connected to the second USB port of the host computer, and the other end of the second communication converter is connected to the RS232 communication port of the driver function interface. It is used to convert the USB format control command sent by the host computer into an RS232 protocol signal and transmit it to the driver under test. At the same time, it converts the RS232 format detection data fed back by the driver under test into a USB signal and feeds it back to the host computer. One end of the third communication converter is connected to the second USB port of the host computer, and the other end of the third communication converter is connected to the RS485 communication port of the driver function interface. It is used to convert the USB format control commands issued by the host computer into RS485 protocol signals and transmit them to the driver under test. At the same time, it converts the RS485 format detection data fed back by the driver under test into USB signals and feeds them back to the host computer.

[0011] In one alternative implementation, each of the execution units includes: a relay and a power supply plug, wherein, The coil end of the relay is connected to the normally open contact end of the first relay IO module of the corresponding control unit. The contact end of the relay is connected in series between the input end of the power supply plug and the output end of the second AC / DC converter. The output end of the power supply plug is adapted to the power supply interface of the driver under test, and is used to respond to the control signal output by the first relay IO module, thereby controlling the on / off state of the power supply circuit of the driver under test.

[0012] In one optional implementation, each of the execution units further includes a purge valve, the power input terminal of which is connected to the output terminal of the first AC / DC converter, and the control terminal of which is connected to the normally open contact terminal of the first relay IO module of the corresponding control unit, for implementing on / off action under the drive of the first relay IO module to simulate the purge condition of the driver under test.

[0013] In one optional implementation, each of the execution units further includes: a motor plug and a molecular pump plug, wherein, One end of the motor plug is connected to the common contact of the first relay IO module in the corresponding control unit, and the other end of the motor plug is adapted to the motor drive end of the driver under test, which is used to establish a load drive signal transmission link between the driver under test and the reference molecular pump. One end of the molecular pump plug is connected to the normally open contact of the first relay IO module in the corresponding control unit, and the other end of the molecular pump plug is precisely adapted to the interface of the reference molecular pump.

[0014] In one optional embodiment, the circuit further includes a status indicator unit, which is communicatively connected to a host computer. The status indicator unit is used to receive control commands issued by the host computer and drive the corresponding indicator light to operate according to the control commands.

[0015] In one optional implementation, the status indication unit includes: a fourth communication converter, a second relay I / O module, a third relay I / O module, and multiple sets of channel status indicator lights, each set of channel status indicator lights corresponding to one detection channel, wherein... One end of the fourth communication converter is connected to the third USB port of the host computer, and the other end of the fourth communication converter is connected to the communication ports of the second relay IO module and the third relay IO module respectively. The common terminal of each group of channel status indicator lights is connected to the output terminal of the first AC / DC converter, and the multiple input terminals of each group of channel status indicator lights are respectively connected to the normally open contact terminals of the second relay IO module and the third relay IO module. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the driver automatic detection circuit according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a power supply unit according to an embodiment of the present invention; Figure 3 This is a partial schematic diagram of the control unit according to an embodiment of the present invention; Figure 4This is a partial schematic diagram of the control unit according to an embodiment of the present invention; Figure 5 This is a schematic diagram of an execution unit according to an embodiment of the present invention; Figure 6 This is a partial schematic diagram of a status indication unit according to an embodiment of the present invention; Figure 7 This is a partial schematic diagram of a status indication unit according to an embodiment of the present invention. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] It is understood that before using the technical solutions disclosed in the various embodiments of the present invention, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in the present invention and their authorization should be obtained in accordance with relevant laws and regulations through appropriate means.

[0020] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0021] Currently, the testing of instrument pump drive modules generally adopts a manual testing mode. During the testing process, operators need to manually complete the wiring operations of the power interface, functional interface, communication interface and load components one by one, and then conduct tests on core parameters such as I / O port status, communication function, and load driving capability. After the test is completed, the wiring needs to be manually disconnected, and the passability of the drive module is manually determined by manually operating the switch and reading the data displayed on the instrument. This testing method has several technical drawbacks, specifically: First, it suffers from low efficiency. Testing a single drive module requires repeated wiring and disconnection, making the process cumbersome. In batch testing scenarios, the efficiency of manual operation is far from meeting the pace requirements of industrial production. Second, it lacks accuracy. The test results rely entirely on the operator's judgment, which is highly subjective and makes it difficult to ensure consistency in the implementation of testing standards, easily leading to judgment biases. Third, it carries high on-site operational risks. During manual wiring, human error can easily cause short circuits in the modules, damaging the tested drive modules and significantly increasing production costs in the testing process. Fourth, traditional testing methods lack both standardized wiring specifications and a systematic automated control mechanism, making it impossible to achieve batch synchronous testing of multiple drive modules and failing to meet the urgent need for efficient quality inspection of drive modules in industrial production. Fifth, the manual testing mode cannot collect and systematically analyze test data in real time, making it difficult to accurately locate performance defects in drive modules, resulting in inconsistent test quality and adversely affecting the quality control of the entire instrument pump product.

[0022] To address the aforementioned problems, this application provides an automatic driver detection circuit to overcome the various drawbacks of existing detection technologies.

[0023] like Figure 1 As shown, the automatic driver detection circuit includes a power supply unit, multiple control units, and multiple execution units, with each control unit and execution unit configured in a one-to-one correspondence. The power supply unit is connected to all control units and all execution units, providing power to them. One end of each control unit is connected to a host computer, and the other end is connected to the corresponding execution unit. The control unit receives control commands from the host computer and drives the corresponding execution unit to perform detection actions according to the commands. Simultaneously, the control unit collects detection data from the driver under test and uploads the data to the host computer. Figure 1 Not shown in the image.

[0024] Specifically, the automatic driver detection circuit of this application adopts a modular, multi-channel parallel architecture design, mainly including a power supply unit, multiple control units, and multiple execution units. The control units and execution units are configured in a one-to-one correspondence, which can synchronously adapt to the parallel detection needs of multiple drivers under test. The power supply unit provides the power supply guarantee for the entire circuit, providing a stable and adaptable power supply for the instruction parsing and data acquisition of all control units, as well as the execution of detection actions by all execution units. Each control unit has bidirectional data interaction capabilities. On the one hand, it receives standardized detection control commands from the host computer, completes command parsing, and accurately drives the corresponding execution unit to execute preset automated detection actions. On the other hand, during the detection process, it collects various detection data of the driver under test in real time, completes preliminary data processing, and synchronously uploads it to the host computer for data judgment and analysis. Simultaneously, the signal links of each control unit are independent and do not interfere with each other, effectively ensuring the stability of multi-channel parallel detection. The execution unit is bound to the control unit one-to-one, receiving the drive signals from the corresponding control unit to complete various actual detection operations such as power on / off switching, operating condition simulation, and signal transmission link establishment for the driver under test.

[0025] This invention provides an automatic driver detection circuit, including a power supply unit, multiple control units, and multiple execution units. It can establish multiple independent detection channels, supporting synchronous parallel detection of multiple driver modules under test, significantly improving detection efficiency. Furthermore, through efficient collaboration between the control units and execution units, it can achieve fully automated interface connection for detection, automated execution of the detection process, and automated judgment of detection results. No manual intervention or judgment is required throughout the process, effectively ensuring the uniformity of detection standards and significantly improving the accuracy and reliability of detection results.

[0026] In one optional implementation, taking the driver automatic detection circuit including 4 detection channels as an example, such as... Figure 2As shown, the power supply unit includes: a main control switch, a global power indicator light HG, multiple power supply sub-control switches (QF1~QF4), a first AC / DC converter DC05, and multiple second AC / DC converters (DC01~DC04). Each power supply sub-control switch (QF1~QF4) is configured in a one-to-one correspondence with a second AC / DC converter (DC01~DC04). Specifically, power supply sub-control switch QF1 corresponds to second AC / DC converter DC01, power supply sub-control switch QF2 corresponds to second AC / DC converter DC02, power supply sub-control switch QF3 corresponds to second AC / DC converter DC03, and power supply sub-control switch QF4 corresponds to second AC / DC converter DC04. The main control switch is connected in series to the L and N terminals of the mains power supply. The output of the main control switch is connected to the input terminals of the first AC / DC converter DC05 and all the second AC / DC converters (QF1~QF4). Each power supply sub-control switch is connected in series between the input terminal of its corresponding second AC / DC converter and the output terminal of the main control switch. The output of the first AC / DC converter DC05 is connected to all control units and all execution units, and the output of each second AC / DC converter is connected to the control unit and execution unit of its corresponding detection channel. A global power indicator HG is connected in series between the output of the master switch and the input of the first AC / DC converter DC05 to provide feedback on the power supply status of the detection circuit.

[0027] Specifically, the main control switch is connected in series to the live wire (L terminal) and neutral wire (N terminal) of the mains power supply. Its output terminals are connected to the global power indicator light, a first AC / DC converter DC05 with a specification of 24V / 5A, and four second AC / DC converters DC01~DC04 with a specification of 24V / 10A. The main control switch is used to control the overall power supply of the device, which is convenient for unified management by operators. The input terminals of the four second AC / DC converters DC01~DC04 are all connected in series with power supply control switches QF1~QF4. Through the independent on / off control of the power supply control switches QF1~QF4, precise and independent control of the power supply for the four detection channels can be achieved. Power can be independently supplied to different detection circuits according to detection needs, ensuring power supply stability and safety.

[0028] The outputs of the four sets of second AC / DC converters (DC01~DC04) are connected to the control units and execution units of the four detection channels, providing dedicated and stable power supplies for each channel's control and execution units. The output of the first AC / DC converter (DC05) is connected to all control units and execution units in the entire circuit, providing a universal power supply to each unit and ensuring the stable execution of the basic operations of all units in the entire circuit. In addition, each power supply's output circuit is connected in series with an overload protection component (such as a self-resetting fuse). This component is of 10A / 250V specification and can automatically disconnect the corresponding circuit in the event of an overload fault, achieving reliable overload protection and effectively preventing damage to the power supply itself and downstream load components due to overload, further improving the overall safety and stability of the detection circuit.

[0029] Furthermore, the first AC / DC converter DC05 and the four sets of second AC / DC converters DC01~DC04 all have wide voltage input adaptability, and the output voltage can be adaptively adjusted according to the specifications of the driver module under test; and each converter has a built-in overvoltage and overcurrent protection module, which can trigger the protection mechanism in time when the power supply is abnormal, effectively avoiding damage to the driver module under test due to power supply failure.

[0030] This power supply unit is equipped with multiple isolated power supplies, providing stable DC power to the control unit, multiple execution units, and status indication units. Each isolated power supply independently powers a corresponding detection channel. The overall design adopts DC isolation, which not only achieves electrical isolation between detection channels, but also completes electrical isolation between high-voltage circuits (load drive circuits) and low-voltage circuits (control and acquisition circuits). This effectively suppresses power supply noise coupling and prevents load fluctuations in a single channel from interfering with the detection accuracy of other channels, ensuring the stability and accuracy of multi-channel parallel detection.

[0031] In one alternative implementation, such as Figure 3As shown, each control unit includes: a first communication converter, a first relay I / O module, and an ART module. One end of the first communication converter is connected to the first USB port of the host computer, and the other end is connected to the communication ports of the first relay I / O module and the ART module, respectively. This converter converts USB-format control commands from the host computer into RS485 signals and sends them to the first relay I / O module and the ART module. Simultaneously, it converts the detection data uploaded by the first relay I / O module and the ART module into USB signals and feeds them back to the host computer. The control port of the first relay I / O module is connected to the corresponding execution unit, used to parse the host computer's control commands and generate control signals to drive the corresponding execution unit to perform detection actions. Simultaneously, the signal acquisition port of the first relay I / O module is connected to the digital input port of the driver's functional interface, used to acquire digital detection data from the driver under test. The signal input terminal of the ART module is connected to the analog input port of the driver's functional interface, used to receive analog detection data from the driver under test.

[0032] Specifically, the first communication converter can convert the USB format control commands sent by the host computer into RS485 signals and send them synchronously to the first relay IO module and ART module to ensure effective transmission of commands within the control unit. On the other hand, it can convert the digital detection data collected by the first relay IO module and the analog detection data collected by the ART module into USB format signals and feed them back to the host computer to complete the feedback interaction of detection data.

[0033] Each detection channel is equipped with one ART module and one relay I / O module, which work together to execute detection commands and process data. The signal acquisition port of the first relay I / O module is connected to the digital pins of the DB26 connector I / O interface of the driver under test. The control port of the first relay I / O module is connected to the corresponding pins of the execution unit, thereby achieving precise control of the various actions of the execution unit. After parsing the RS485 format control commands transmitted by the first communication converter, the first relay I / O module generates control signals adapted to the actions of the execution unit, driving the corresponding execution unit to perform various preset detection actions through the control port. Simultaneously, by connecting the signal acquisition port to the driver's digital port, it acquires the digital detection data of the driver under test in real time. After completing preliminary data processing such as signal filtering and format conversion, the data is uploaded to the first communication converter, realizing closed-loop acquisition of digital data and effectively improving data transmission efficiency and reliability.

[0034] The ART module receives analog detection data output by the driver under test by connecting its signal input terminal to the analog pin of the DB26 connector of the driver's functional interface. After acquisition, the data is synchronously uploaded to the first communication converter and sent back to the host computer along with the digital data, thus achieving full coverage acquisition of both digital and analog detection data of the driver.

[0035] This embodiment achieves automatic interface connection, automatic execution of the testing process, and automatic judgment of testing results through the coordinated operation of the control unit and the execution unit. It eliminates the need for manual wiring, significantly improving testing efficiency and making it suitable for mass production testing scenarios. Simultaneously, it employs standardized testing circuits and digital signal processing methods to avoid errors from subjective human judgment. This allows for accurate identification of issues such as power supply abnormalities, communication failures, and functional output deviations in the drive module, improving the reliability of testing results. It covers I / O ports, communication, multi-load driving, and collaborative control, simulating actual working conditions and enhancing testing accuracy.

[0036] In one alternative implementation, such as Figure 4 As shown, each control unit further includes a second communication converter and a third communication converter. One end of the second communication converter is connected to the second USB port of the host computer, and the other end is connected to the RS232 communication port of the driver's functional interface. This second communication converter converts USB-format control commands issued by the host computer into RS232 protocol signals for transmission to the driver under test, and simultaneously converts RS232-format detection data fed back by the driver under test into USB signals for feedback to the host computer. One end of the third communication converter is connected to the second USB port of the host computer, and the other end is connected to the RS485 communication port of the driver's functional interface. This third communication converter converts USB-format control commands issued by the host computer into RS485 protocol signals for transmission to the driver under test, and simultaneously converts RS485-format detection data fed back by the driver under test into USB signals for feedback to the host computer.

[0037] Specifically, the second communication converter, as a dedicated RS232 protocol conversion unit, is responsible for the bidirectional signal translation and transmission of RS232 communication between the host computer and the driver under test. On the one hand, it can convert the USB format communication detection control commands issued by the host computer into RS232 protocol signals and transmit them to the driver under test, thus completing the issuance of communication commands. On the other hand, it can receive the RS232 format communication detection data fed back by the driver under test in real time, convert it into USB format signals, and feed it back to the host computer, realizing the closed loop of command downlink and data uplink in the RS232 communication link, and completing the detection and verification of the driver's RS232 communication function.

[0038] The second communication converter, acting as a dedicated RS485 protocol conversion unit, enables bidirectional protocol conversion and data exchange between the host computer and the driver under test (DUT) via RS485 communication. Firstly, it converts USB-format control commands from the host computer into RS485 protocol signals, transmits them to the DUT, and issues communication test commands. Secondly, it collects RS485-format communication test data returned by the DUT, converts it to USB format, and uploads it to the host computer, forming a complete data exchange loop for the RS485 communication link, thus enabling specialized testing of the DUT's RS485 communication function.

[0039] The first and second communication converters utilize the second USB port of the host computer to achieve unified command reception and data transmission, respectively completing protocol conversion and communication testing for the RS232 and RS485 communication ports of the driver. Dual-mode communication function testing can be performed simultaneously without manual switching of communication standards. This design can verify all types of driver communication functions in one go, avoiding the limitations of single-mode testing and significantly improving the completeness and efficiency of communication testing, thus meeting the application requirements of industrial batch testing.

[0040] This embodiment is equipped with multiple communication converters, which are compatible with external control devices and testing instruments with different communication protocols. The standardized pin correspondence design of the molecular pump plug and motor socket is adapted to various models of instrument pump drive modules, and has a wide range of applications.

[0041] In one alternative implementation, such as Figure 5 As shown, each execution unit includes a relay and a power supply plug. The coil of the relay is connected to the normally open contact of the first relay I / O module of the corresponding control unit. The contact of the relay is connected in series between the input of the power supply plug and the output of the second AC / DC converter. The output of the power supply plug is adapted to connect to the power supply interface of the driver under test, and is used to respond to the control signal output by the first relay I / O module, thereby controlling the on / off state of the power supply circuit of the driver under test.

[0042] Specifically, the relay, as the core actuator for power supply circuit on / off control, responds to the control signals output by the first relay I / O module: when the first relay I / O module issues a conduction command, the relay coil is energized, its contacts close, and the power supply path from the second AC / DC converter to the power plug is opened; when the first relay I / O module issues a disconnection command, the relay coil is de-energized, its contacts open, and the power supply link to the driver is directly cut off. The power plug, as a standardized adapter component, ensures a stable connection of the power supply link through precise matching with the power supply interface of the driver under test, reliably delivering the adapted DC power output from the second AC / DC converter to the driver under test. The actuator, relying on the linkage control of the relay and the first relay I / O module, replaces the traditional manual wiring and circuit breaker operation. It can automatically complete the conduction and disconnection of the power supply circuit of the driver under test according to the instructions issued by the host computer, realizing automated control of driver power-on detection and power-off shutdown. This avoids the operational risks of manual wiring and significantly improves the automation level and efficiency of the testing process.

[0043] In one alternative implementation, such as Figure 5 As shown, each execution unit also includes a purge valve, the power input terminal of which is connected to the output terminal of the first AC / DC converter, and the control terminal of which is connected to the normally open contact terminal of the first relay IO module of the corresponding control unit, for realizing on / off action under the drive of the first relay IO module to simulate the purge condition of the driver under test.

[0044] Specifically, the purge valve, as the actuator in the operating condition simulation, simulates the purging conditions faced by the drive under test in real-world application scenarios. In industrial settings, instrument pump drive modules often need to work in conjunction with purging devices. The opening and closing of the purge valve directly affects the load state and operating environment of the drive. Therefore, simulating this operating condition is a crucial step in testing the drive's adaptability.

[0045] When the host computer issues a purging condition detection command, the first relay I / O module of the corresponding control unit parses the command and outputs a control signal to close its normally open contact. At this time, the purging valve control terminal is energized, driving the purging valve to perform a conduction action, simulating the purging start state in actual operation. When the detection is complete and the purging condition needs to be terminated, the first relay I / O module stops outputting control signals, its normally open contact opens, the purging valve control terminal is de-energized, the purging valve closes, and the purging condition simulation ends.

[0046] By linking the purge valve with the first relay I / O module, automated simulation of the purge process is achieved, eliminating the need for manual setup of the purge scenario or valve operation, significantly improving the accuracy and automation of the simulation. Simultaneously, the universal and stable power supply provided by the first AC / DC converter ensures the reliability of the purge valve's operation, preventing simulation distortion due to power fluctuations. By simulating real-world purge conditions, the core performance characteristics of the driver under test, such as load response and operational stability, can be accurately detected, making the test results more closely match actual application requirements and further enhancing the comprehensiveness and effectiveness of the testing.

[0047] In one alternative implementation, such as Figure 5 As shown, each execution unit also includes a motor connector and a molecular pump connector. One end of the motor connector connects to the common contact of the relay I / O module in the corresponding control unit, and the other end connects to the motor drive terminal of the driver under test, establishing a load drive signal transmission link between the driver under test and the reference molecular pump. One end of the molecular pump connector connects to the normally open contact of the relay I / O module in the corresponding control unit, and the other end connects precisely to the interface of the reference molecular pump.

[0048] Specifically, the motor connector transmits the motor drive signal output by the driver under test to the subsequent load link, providing drive signal support for the operation of the reference molecular pump. The molecular pump connector, through precise matching with the reference molecular pump interface, achieves a reliable connection between the driver under test and the reference load (molecular pump), allowing the driver's load driving capability to be intuitively reflected through the actual operating status of the reference molecular pump.

[0049] When the host computer issues a load drive detection command, the first relay IO module of the corresponding control unit parses the command and closes its normally open contact, simultaneously opening two paths: on the one hand, the drive signal of the driver under test transmitted by the motor plug can be smoothly transmitted to the molecular pump plug; on the other hand, the molecular pump plug forms a complete load link with the motor plug through the closed contact, and the reference molecular pump starts running after receiving the drive signal, realizing a real simulation test of the load drive capability of the driver under test; after the test is completed, the normally open contact of the first relay IO module opens, the load link is cut off, and the reference molecular pump stops running.

[0050] By precisely adapting standardized plugs (motor plugs, molecular pump plugs), the traditional manual load connection method is replaced, enabling automated setup and disconnection of the load drive link. Simultaneously, using a reference molecular pump as the actual load, the actual working load scenario of the driver under test can be accurately reproduced, making the test results of load drive capability more consistent with practical application requirements. Furthermore, the two links are linked and controlled by a relay I / O module to ensure the synchronization of signal transmission and load connection, avoiding detection distortion caused by link asynchrony, further improving the accuracy and reliability of load drive testing, and meeting the standardization and automation requirements of industrial batch testing.

[0051] Furthermore, the DB26 connector configured on the functional interface of the driver under test can be adapted to connect with an external test driver module to complete the extended acquisition of test data. The first relay IO module of each test channel is equipped with multiple sets of IO signal acquisition interfaces. Each acquisition interface is connected to the communication and control function interface of the driver under test module, and all interfaces are one-to-one adapted to the IO pins of the driver under test module. This allows for accurate acquisition of the high-level and low-level operating states of the IO ports of the driver under test module, the normally closed / normally open on / off states of various contacts, and complete acquisition of fault feedback signals output by the module (such as abnormal shutdown signals).

[0052] In one optional implementation, the circuit further includes a status indicator unit, which is communicatively connected to a host computer. The status indicator unit is used to receive control commands issued by the host computer and drive the corresponding indicator light to operate according to the control commands.

[0053] In this embodiment, as Figure 6 and Figure 7 As shown, the status indication unit includes: a fourth communication converter, a second relay I / O module, a third relay I / O module, and multiple sets of channel status indicator lights, each set corresponding to one detection channel. One end of the fourth communication converter is connected to the third USB port of the host computer, and the other end is connected to the communication ports of the second and third relay I / O modules respectively. The common terminal of each set of channel status indicator lights is connected to the output terminal of the first AC / DC converter, and the multiple input terminals of each set of channel status indicator lights are connected one-to-one to the normally open contacts of the second and third relay I / O modules.

[0054] Specifically, the fourth communication converter can convert the USB format indicator light control commands sent by the host computer into RS485 communication signals adapted to the second and third relay IO modules and send them synchronously; at the same time, it can transmit the actual operation status of the indicator light back to the host computer, realizing bidirectional data interaction between the indicator unit and the host computer.

[0055] The second and third relay I / O modules jointly receive and parse the control commands transmitted by the fourth communication converter. Through the opening and closing of their normally open contacts, they precisely drive the input terminals of the corresponding channel status indicator lights to be energized / de-energized, thereby realizing the lighting and switching of the indicator lights. The dual-relay I / O module configuration can adapt to the multi-state display requirements of indicator lights, ensuring accurate mapping of various detection states.

[0056] Each channel status indicator light is individually linked to a detection channel. Their on / off states and status switching are fully responsive to the drive signals from the second and third relay I / O modules, providing direct feedback on the operating status of the corresponding detection channel (e.g., normal detection, standby, fault alarm). The multi-input design of each group of indicator lights allows for adaptation to different lighting conditions, meeting multi-dimensional status indication requirements. For example, in this embodiment, the channel status indicator lights are tri-color indicator lights, with each color corresponding to the operating status of the detection channel; a lit green indicator light indicates that the corresponding detection channel is in normal working condition, while a lit red indicator light indicates that the corresponding detection channel is in a fault alarm state.

[0057] The host computer issues corresponding indicator light control commands based on the real-time operating data of each detection channel. After protocol conversion by the fourth communication converter, the control commands are transmitted to the second and third relay I / O modules. After parsing the commands, the two relay I / O modules control the opening and closing of their normally open contacts, driving the input terminals of the corresponding channel indicator lights to be energized / de-energized. The indicator lights then perform the corresponding actions, providing visual feedback on the channel's operating status.

[0058] Each group of channel status indicator lights is configured in a one-to-one correspondence with the detection channel. When the operating status of a single channel changes, only its corresponding indicator light is triggered to complete the action. The indication links of each channel are independent and do not interfere with each other, enabling accurate identification and positioning of the detection channel status. This status indication unit is remotely controlled by a host computer, requiring no manual intervention in the indicator light operation; it is entirely driven by host computer commands. Simultaneously, the power supply link and drive link of the indicator lights are separated. The common terminal of the indicator lights is uniformly powered by the first AC / DC converter, while the drive link is independently controlled by a dual-relay IO module. This ensures power supply stability and improves the accuracy of indicator light actions, effectively achieving real-time and intuitive feedback on the channel status during the detection process.

[0059] In one optional implementation, the host computer communicates with each control unit, acquiring current and voltage signals, as well as relay on / off status signals, during the operation of the molecular pump driven by the drive module under test. These signals are transmitted to the host computer via the communication module, where they are analyzed and processed, and a test report is automatically generated. The host computer integrates four core functions: 1) Parameter configuration: It allows flexible setting of test parameters such as I / O port level thresholds, drive duration, and purge valve action intervals to adapt to diverse test requirements of different drive modules; 2) Multi-channel control: It supports both multi-channel parallel testing and single-channel independent testing modes, allowing flexible start / stop control of each test channel; 3) Data processing: It automatically stores all test data, covering core information such as test time, drive module model, and various test parameter values; 4) Report generation: After testing, a test report is automatically generated, fully including test items, pass / fail results, and fault details, and supports export in PDF and Excel formats. The test data is uploaded to the host computer in real time, and test reports can be automatically generated. Key parameters in the test process are recorded, providing a reliable basis for product quality traceability and problem localization.

[0060] In one optional implementation, the automatic detection circuit of the driver operates as follows: The host computer sends an initialization command, which is converted by the first communication converter (USB to 485) and transmitted to the ART module and the first relay IO module, driving all relay modules to reset, and the circuit enters standby mode. The model of the instrument pump driver module is set, and the corresponding standard parameters in the host computer software are called. The four sets of instrument pump driver modules to be tested are connected to the molecular pump plugs 1-4 and the motor sockets 1-4 respectively. The sockets are secured by positioning clips and locking structures to ensure reliable connection. The detection control program is started via an external computer, powering on the power supply unit, initializing the control unit, and the ART module and the first relay IO module complete the communication protocol handshake. The power indicator light in the indicator unit illuminates (green).

[0061] An external computer outputs a high-level signal to the corresponding relay coil of the first relay IO module through the first communication converter (USB to 485). The relay is activated, the power socket supplies power to the driver under test, and the relay status indicator light illuminates (green).

[0062] The host computer issues control commands to acquire the operating parameters (such as current, voltage, and speed signals) of the module under test from the detection interface unit via USB-to-RS232 / 485 communication. It also acquires the I / O switch data of the driver under test via the first relay I / O module and receives the analog data of the driver under test via the ART module, feeding it back to the external computer. The first relay I / O module controls the energization of the purge valve, and the computer acquires load current and voltage signals via communication to determine the output capability of the driver under test. The computer analyzes and processes the data to determine whether the driver under test is functioning correctly.

[0063] If an abnormal situation such as overload or communication interruption occurs during the testing process, the abnormal output level signal of the first relay IO module will be fed back to the host computer, the driver under test will stop, the corresponding circuit status indicator light will light up (red), and the external computer will simultaneously issue an audible and visual alarm signal to prompt the staff to handle the situation.

[0064] After all tests are completed, the external computer sends a stop command, the first relay IO module controls the relay to disconnect, the power socket stops supplying power, and all indicator lights except the power indicator light go out. The module to be tested is then removed, completing one test cycle.

[0065] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An automatic detection circuit for a driver, characterized in that, The circuit includes: a power supply unit, multiple control units, and multiple execution units, wherein the control units and execution units are configured in a one-to-one correspondence. The power supply unit is connected to all control units and all execution units respectively, and is used to provide power to all control units and all execution units; One end of each control unit is connected to the host computer, and the other end of each control unit is connected to the corresponding execution unit. The control unit is used to receive control commands issued by the host computer and drive the corresponding execution unit to perform detection actions according to the control commands. At the same time, the control unit collects the detection data of the driver to be detected and uploads the detection data to the host computer.

2. The driver automatic detection circuit according to claim 1, characterized in that, The power supply unit includes: a main control switch, multiple power supply sub-control switches, a first AC / DC converter, and multiple second AC / DC converters. Each power supply sub-control switch is configured in a one-to-one correspondence with a second AC / DC converter. The main control switch is connected in series to the L and N terminals of the mains power supply, and the output terminal of the main control switch is connected to the input terminals of the first AC / DC converter and all the second AC / DC converters respectively. Each of the power supply sub-control switches is connected in series between the input terminal of the corresponding second AC / DC converter and the output terminal of the main control switch; The output of the first AC / DC converter is connected to all control units and all execution units, and the output of each second AC / DC converter is connected to the control unit and execution unit of its corresponding detection channel.

3. The driver automatic detection circuit according to claim 2, characterized in that, The power supply unit further includes a global power indicator light, which is connected in series between the output terminal of the main control switch and the input terminal of the first AC / DC converter to provide feedback on the power supply status of the detection circuit.

4. The driver automatic detection circuit according to claim 2, characterized in that, Each of the control units includes: a first communication converter, a first relay I / O module, and an ART module, wherein, One end of the first communication converter is connected to the first USB port of the host computer, and the other end of the first communication converter is connected to the communication ports of the first relay IO module and the ART module respectively. It is used to convert the USB format control commands issued by the host computer into RS485 signals and send them to the first relay IO module and the ART module. At the same time, it converts the detection data uploaded by the first relay IO module and the ART module into USB signals and feeds them back to the host computer. The control port of the first relay I / O module is connected to the corresponding execution unit and is used to parse the host computer control instructions and generate control signals to drive the corresponding execution unit to perform detection actions; at the same time, the signal acquisition port of the first relay I / O module is connected to the digital port of the driver function interface and is used to acquire the digital detection data of the driver under test. The signal input terminal of the ART module is connected to the analog port of the driver function interface to receive analog detection data from the driver under test.

5. The driver automatic detection circuit according to claim 4, characterized in that, Each of the control units further includes: a second communication converter and a third communication converter, wherein... One end of the second communication converter is connected to the second USB port of the host computer, and the other end of the second communication converter is connected to the RS232 communication port of the driver function interface. It is used to convert the USB format control command sent by the host computer into an RS232 protocol signal and transmit it to the driver under test. At the same time, it converts the RS232 format detection data fed back by the driver under test into a USB signal and feeds it back to the host computer. One end of the third communication converter is connected to the second USB port of the host computer, and the other end of the third communication converter is connected to the RS485 communication port of the driver function interface. It is used to convert the USB format control commands issued by the host computer into RS485 protocol signals and transmit them to the driver under test. At the same time, it converts the RS485 format detection data fed back by the driver under test into USB signals and feeds them back to the host computer.

6. The driver automatic detection circuit according to claim 4, characterized in that, Each of the aforementioned execution units includes: a relay and a power supply plug, wherein, The coil end of the relay is connected to the normally open contact end of the first relay IO module of the corresponding control unit. The contact end of the relay is connected in series between the input end of the power supply plug and the output end of the second AC / DC converter. The output end of the power supply plug is adapted to the power supply interface of the driver under test, and is used to respond to the control signal output by the first relay IO module, thereby controlling the on / off state of the power supply circuit of the driver under test.

7. The driver automatic detection circuit according to claim 4, characterized in that, Each of the aforementioned execution units further includes: a purge valve, wherein the power input terminal of the purge valve is connected to the output terminal of the first AC / DC converter, and the control terminal of the purge valve is connected to the normally open contact terminal of the first relay IO module of the corresponding control unit, for realizing on / off action under the drive of the first relay IO module to simulate the purge condition of the driver under test.

8. The driver automatic detection circuit according to claim 4, characterized in that, Each of the aforementioned execution units further includes: a motor plug and a molecular pump plug, wherein, One end of the motor plug is connected to the common contact of the first relay IO module in the corresponding control unit, and the other end of the motor plug is adapted to the motor drive end of the driver under test, which is used to establish a load drive signal transmission link between the driver under test and the reference molecular pump. One end of the molecular pump plug is connected to the normally open contact of the first relay IO module in the corresponding control unit, and the other end of the molecular pump plug is precisely adapted to the interface of the reference molecular pump.

9. The driver automatic detection circuit according to claim 2, characterized in that, The circuit further includes a status indicator unit, which is communicatively connected to the host computer. The status indicator unit is used to receive control commands issued by the host computer and drive the corresponding indicator light to operate according to the control commands.

10. The driver automatic detection circuit according to claim 9, characterized in that, The status indication unit includes: a fourth communication converter, a second relay I / O module, a third relay I / O module, and multiple sets of channel status indicator lights. Each set of channel status indicator lights corresponds to one detection channel. One end of the fourth communication converter is connected to the third USB port of the host computer, and the other end of the fourth communication converter is connected to the communication ports of the second relay IO module and the third relay IO module respectively. The common terminal of each group of channel status indicator lights is connected to the output terminal of the first AC / DC converter, and the multiple input terminals of each group of channel status indicator lights are respectively connected to the normally open contact terminals of the second relay IO module and the third relay IO module.

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