Elevator drive board testing device
Patent Information
- Application Number
- CN202522033895.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-22
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-09-22
AI Technical Summary
Existing elevator drive board testing equipment has a complex operation process, is prone to missed detections and false detections, has a long testing cycle and high cost, and is difficult to effectively test various encoder ports, communication methods, I/O ports and AD sampling.
An elevator drive board testing device was designed, comprising a test motherboard, a display module, and a power supply module. The test motherboard integrates a CAN communication module, an RS422 communication module, an RS485 communication module, an I/O acquisition module, an AD sampling module, an analog voltage output module, a sine and cosine encoder module, and a pulse encoder module. Through these modules, data is exchanged with the elevator drive board under test, and test steps and fault information are displayed in real time.
It simplifies the testing process, shortens testing time, reduces testing costs, improves testing accuracy and efficiency, and has strong applicability.
Smart Images
Figure CN224934112U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of elevator drive board testing technology, and specifically to an elevator drive board testing device. Background Technology
[0002] With the accelerating pace of urbanization and the continuous increase in building height, elevators have become an indispensable vertical transportation tool in modern buildings, greatly improving people's travel efficiency and experience. Within elevator systems, the elevator drive directly affects the overall safety and operational efficiency of the elevator; therefore, improving the stability and reliability of the elevator drive is of paramount importance.
[0003] Currently, major elevator manufacturers both domestically and internationally are developing and launching elevator drive solutions and mass-producing various elevator drive board hardware. Due to product quality requirements, the hardware needs to be tested before leaving the factory to ensure its functional reliability; therefore, elevator drive board testing equipment has become a necessity.
[0004] Existing elevator drive board testing requires different testing devices to detect various encoder ports, communication methods, I / O ports, and AD sampling. The operation process is complex, prone to missed detections and false detections, has a long testing cycle, and the cost of testing equipment is high. Utility Model Content
[0005] In order to overcome the above-mentioned technical problems, the purpose of this utility model is to provide an elevator drive board testing device.
[0006] The objective of this utility model can be achieved through the following technical solution: an elevator drive board testing device, comprising: Test the motherboard, display module, and power module; The test motherboard includes a CAN communication module, a sine / cosine encoder module, a pulse encoder module, an RS485 communication module, an RS422 communication module, an I / O acquisition module, an AD sampling module, an analog voltage output module, and a relay module. The power module is connected to the test motherboard and is used to supply power to the entire test device.
[0007] As a further embodiment of this utility model: the test motherboard is connected to the RS422 communication port of the elevator drive board under test through its RS422 communication module.
[0008] As a further embodiment of this utility model: the test motherboard is connected to the RS485 communication port of the elevator drive board under test through its RS485 communication module.
[0009] As a further embodiment of this invention: the test motherboard is connected to the I / O port of the elevator drive board under test through its I / O acquisition module.
[0010] As a further embodiment of this invention: the test motherboard is connected to the AD sampling port of the elevator drive board under test through its analog voltage output module.
[0011] As a further embodiment of this invention: the test motherboard is connected to the analog voltage output port of the elevator drive board under test through its AD sampling module.
[0012] As a further embodiment of this utility model: the test motherboard is connected to the sine and cosine encoder port of the elevator drive board under test through its sine and cosine encoder module.
[0013] As a further embodiment of this invention: the test motherboard is connected to the pulse encoder port of the elevator drive board under test through its pulse encoder module.
[0014] As a further aspect of this utility model: the test motherboard is connected to the power port of the elevator drive board under test through its relay module, and is used to control the power supply of the elevator drive board under test.
[0015] As a further embodiment of this invention: the display module is connected to the CAN communication module of the test motherboard, and is used to receive and display test steps, fault information and input status test data in real time. The beneficial effects of this utility model are as follows: During the test, the power supply module is used to power the entire test device. The elevator under test is tested through the CAN communication module, RS422 communication module, RS485 communication module, I / O acquisition module, AD sampling module, analog voltage output module, sine and cosine encoder module, and pulse encoder module of the test motherboard. The display module displays the test steps in real time. When one of the modules detects a fault, the testing of the subsequent modules is stopped. The display module displays the fault code and fault description in real time.
[0016] By testing the data interaction between the motherboard, display module, and elevator drive board under test, this device enables testing of various encoder ports, communication methods, I / O ports, AD sampling ports, and analog voltage output ports of the elevator drive board. This simplifies the operation process, shortens testing time, and saves testing costs. This testing device is highly modular, has abundant interfaces, and is highly adaptable. Attached Figure Description
[0017] The present invention will be further described below with reference to the accompanying drawings.
[0018] Figure 1 This is an overall schematic diagram of the elevator drive board testing device according to an embodiment of the present invention; Figure 2 This is another schematic diagram of the elevator drive board testing device according to an embodiment of the present invention.
[0019] Explanation of reference numerals in the attached diagram: 1. Test motherboard; 2. Display module; 3. Power supply module; 11. CAN communication module; 12. RS422 communication module; 13. RS485 communication module; 14. I / O acquisition module; 15. AD sampling module; 16. Analog voltage output module; 17. Sine / cosine encoder module; 18. Pulse encoder module; 19. Relay module. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.
[0021] See Figures 1-2 An elevator drive board testing device according to an embodiment of the present invention includes: a test motherboard 1, a display module 2, and a power supply module 3; the test motherboard 1 includes a CAN communication module 11, a sine / cosine encoder module 17, a pulse encoder module 18, an RS485 communication module 13, an RS422 communication module 12, an I / O acquisition module 14, an AD sampling module 15, an analog voltage output module 16, and a relay module 19; the power supply module 3 can be a switching power supply, with a 220V AC mains input connected to the test motherboard 1, and the power supply module 3 is used to power the entire testing device.
[0022] Specifically, the test motherboard 1 is the core of the entire device. The test motherboard 1 houses an MCU (Microcontroller Unit), which can be a STMicroelectronics STM32F407 series chip. This chip boasts powerful core performance and integrates various peripherals, making it ideal for this application. The MCU is responsible for executing the test process, controlling all functional modules, and processing data. During testing, the power supply module 3 supplies power to the entire test device. The elevator under test is tested through the CAN communication module 11, RS422 communication module 12, RS485 communication module 13, I / O acquisition module 14, AD sampling module 15, analog voltage output module 16, sine / cosine encoder module 17, and pulse encoder module 18 of the test motherboard 1. The display module 2 displays the test steps in real time. When one module detects a fault, the testing of subsequent modules is stopped. The display module 2 displays the fault code and fault description in real time.
[0023] Furthermore, by testing the data interaction between the mainboard 1, display module 2, and the elevator drive board under test, the system was able to test various encoder ports, communication methods, I / O ports, AD sampling ports, and analog voltage output ports of the elevator drive board. This simplified the operation process, shortened the testing time, and saved testing costs. This testing device is highly modular, has abundant interfaces, and is highly adaptable.
[0024] See Figures 1-2 Optionally, the test motherboard 1 is connected to the RS422 communication port of the elevator drive board under test through its RS422 communication module 12.
[0025] In this embodiment, the RS422 communication module 12 is implemented using an RS422 differential transceiver chip and interface circuit, and is used to establish a communication connection with the RS422 interface of the driver board under test to complete data interaction. See Figures 1-2 Optionally, the test motherboard 1 is connected to the RS485 communication port of the elevator drive board under test through its RS485 communication module 13.
[0026] In this embodiment, the RS485 communication module 13 is implemented using an RS485 transceiver chip and interface circuit, and is used to establish a communication connection with the RS485 interface of the driver board under test to complete data interaction.
[0027] See Figures 1-2 Optionally, the test motherboard 1 is connected to the I / O port of the elevator drive board under test through its I / O acquisition module 14.
[0028] In this embodiment, the I / O acquisition module 14 consists of an optocoupler isolated input circuit and a semiconductor switch drive output circuit, which is used to realize the interactive acquisition of switch signals with the I / O port of the elevator drive board under test.
[0029] See Figures 1-2 Optionally, the test motherboard 1 is connected to the AD sampling port of the elevator drive board under test through its analog voltage output module 16.
[0030] In this embodiment, the analog voltage output module 16 can utilize the DAC integrated inside the MCU or an external DAC chip, in conjunction with a voltage buffer circuit, to output a precise programmable analog voltage.
[0031] See Figures 1-2 Optionally, the test motherboard 1 is connected to the analog voltage output port of the elevator drive board under test through its AD sampling module 15.
[0032] In this embodiment, the AD sampling module 15 can utilize the 12-bit or 16-bit analog-to-digital converter integrated within the MCU, along with a conditioning circuit composed of an operational amplifier, to acquire analog voltage signals.
[0033] See Figures 1-2 Optionally, the test motherboard 1 is connected to the sine and cosine encoder port of the elevator drive board under test through its sine and cosine encoder module 17.
[0034] In this embodiment, the sine / cosine encoder module 17 can be composed of a high-precision digital-to-analog converter (DAC) chip or a dedicated encoder simulation chip, used to generate high-precision, highly synchronized analog sine / cosine (Sin / Cos) signals to simulate the feedback output of a servo system or absolute encoder, and to test the resolution accuracy and stability of the elevator drive board under test for position and speed signals. See Figures 1-2 Optionally, the test motherboard 1 is connected to the pulse encoder port of the elevator drive board under test through its pulse encoder module 18.
[0035] In this embodiment, the pulse encoder module 18 can directly utilize the output comparison function of the MCU's advanced timer, in conjunction with the optocoupler isolation circuit, to generate A and B phase pulse signals with a phase difference of 90° and a zero-position Z pulse signal, in order to simulate the output of an incremental encoder and test the response and processing capability of the elevator drive board under test to the pulse signal.
[0036] Reference 1- Figure 2 The testing process is as follows: Step 1: Test the RS422 communication port. The MCU of the test motherboard 1 sends test data to the elevator drive board under test through the RS422 communication module 12. After receiving the test data, the elevator drive board feeds it back to the test motherboard 1 through the RS422 communication port. The test motherboard 1 checks the feedback data. If the test is successful, it proceeds to the next test. The display module 2 displays the test steps in real time. If the test fails, the test stops. The display module 2 displays the fault code and fault description in real time.
[0037] Step 2: Test the RS485 communication port. After the test in Step 1 is passed, the MCU of the test motherboard 1 sends test data to the elevator drive board under test through the RS485 communication module 13. After receiving the test data, the elevator drive board feeds back to the test motherboard 1 through the RS485 communication port. The test motherboard 1 checks the feedback data. If the test is passed, it proceeds to the next test. The display module 2 displays the test steps in real time. If the test fails, the test stops. The display module 2 displays the fault code and fault description in real time.
[0038] Test Step 3: Test the I / O port. Based on the successful test in Step 2, the MCU of Test Mainboard 1 outputs test data through the I / O driver module. The elevator driver board feeds back the collected I / O status data to Test Mainboard 1 through the RS485 communication port. Test Mainboard 1 checks the feedback data. If the test is successful, it proceeds to the next test. Display Module 2 displays the test steps in real time. If the test fails, the test stops. Display Module 2 displays the fault code and fault description in real time.
[0039] Test Step 4: AD Sampling Test. Based on the successful test in Step 3, the MCU of Test Mainboard 1 outputs different preset voltage values through the analog voltage output module 16. The elevator drive board samples at the AD sampling port and feeds back the obtained AD sampling value to Test Mainboard 1 through the RS485 communication port. Test Mainboard 1 checks the feedback data. If the test is successful, it proceeds to the next test. Display Module 2 displays the test steps in real time. If the test fails, the test stops. Display Module 2 displays the fault code and fault description in real time.
[0040] Test Step 5: Test the analog voltage output port. Based on the successful test in Step 4, the MCU of the test motherboard 1 sends test data to the elevator drive board under test through the RS485 communication module 13. The elevator drive board outputs analog voltage according to the test data. The test motherboard 1 samples the data through the AD sampling module 15 and compares the sampled data with the test data. If the test is successful, the test proceeds to the next step. The display module 2 displays the test steps in real time. If the test fails, the test stops. The display module 2 displays the fault code and fault description in real time. Test Step 6: Test the sine and cosine encoder port. Based on the successful test in Step 5, the MCU of the test motherboard 1 simulates the operation of the elevator host through the sine and cosine encoder module 17. The elevator drive board calculates the host operation data and returns it to the test motherboard 1 through the RS485 communication port. The test motherboard 1 checks the feedback data. If the test is successful, it proceeds to the next test. The display module 2 displays the test steps in real time. If the test fails, the test stops. The display module 2 displays the fault code and fault description in real time.
[0041] Test Step 7: Test the pulse encoder port. Based on the successful test in Step 6, the MCU of Test Main Board 1 simulates the operation of the elevator host through the pulse encoder module 18. The elevator drive board calculates the host operation data and returns it to Test Main Board 1 through the RS485 communication port. Test Main Board 1 checks the feedback data. If the test is successful, it proceeds to the next test. Display Module 2 displays the test steps in real time. If the test fails, the test stops. Display Module 2 displays the fault code and fault description in real time.
[0042] Test Step 8: After all the above test steps are passed, the display module 2 will show that the test is complete, and the entire test process will end.
[0043] See Figures 1-2 Optionally, the test motherboard 1 is connected to the power port of the elevator drive board under test through its relay module 19 to control the power supply of the elevator drive board under test.
[0044] In this embodiment, the relay module 19 is composed of an electromagnetic relay driven by a transistor through the I / O port of the MCU, which is used to control the power supply to the elevator drive board 4 under test.
[0045] See Figures 1-2 Optionally, the display module 2 is connected to the CAN communication module 11 of the test motherboard 1 to receive and display test steps, fault information and input status test data in real time.
[0046] In this embodiment, the display module 2 can be an industrial touch screen with CAN communication function, which is connected to the CAN communication module 11 of the test motherboard 1 via a CAN bus. The function of the display module 2 is to receive data sent by the test motherboard 11 and display test data such as test steps, fault information codes and descriptions, and input / output status in real time, providing operators with a clear human-machine interface to facilitate monitoring of test progress and quick fault location.
[0047] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," and "right," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or a specific orientational structure and operation. Therefore, they should not be construed as limitations on this utility model. Furthermore, "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "multiple" means two or more.
[0048] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0049] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.
Claims
1. An elevator drive board testing device, characterized in that, include: Test the motherboard (1), display module (2) and power module (3); The test motherboard (1) includes a CAN communication module (11), a sine and cosine encoder module (17), a pulse encoder module (18), an RS485 communication module (13), an RS422 communication module (12), an I / O acquisition module (14), an AD sampling module (15), an analog voltage output module (16), and a relay module (19). The power module (3) is connected to the test motherboard (1) and is used to power the entire test device.
2. The elevator drive board testing device according to claim 1, characterized in that, The test motherboard (1) is connected to the RS422 communication port of the elevator drive board under test through its RS422 communication module (12).
3. The elevator drive board testing device according to claim 2, characterized in that, The test motherboard (1) is connected to the RS485 communication port of the elevator drive board under test through its RS485 communication module (13).
4. The elevator drive board testing device according to claim 3, characterized in that, The test motherboard (1) is connected to the I / O port of the elevator drive board under test through its I / O acquisition module (14).
5. The elevator drive board testing device according to claim 4, characterized in that, The test motherboard (1) is connected to the AD sampling port of the elevator drive board under test through its analog voltage output module (16).
6. The elevator drive board testing device according to claim 5, characterized in that, The test motherboard (1) is connected to the analog voltage output port of the elevator drive board under test through its AD sampling module (15).
7. The elevator drive board testing device according to claim 6, characterized in that, The test motherboard (1) is connected to the sine and cosine encoder port of the elevator drive board under test through its sine and cosine encoder module (17).
8. The elevator drive board testing device according to claim 7, characterized in that, The test motherboard (1) is connected to the pulse encoder port of the elevator drive board under test through its pulse encoder module (18).
9. The elevator drive board testing device according to claim 8, characterized in that, The test motherboard (1) is connected to the power port of the elevator drive board under test through its relay module (19) to control the power supply of the elevator drive board under test.
10. The elevator drive board testing device according to any one of claims 1-9, characterized in that, The display module (2) is connected to the CAN communication module (11) of the test motherboard (1) and is used to receive and display test steps, fault information and input status test data in real time.