Method for testing adhesion of contacts of star sealing contactor of elevator

Abstract

The invention discloses an elevator star sealing contactor contact adhesion test method, which comprises a display system, a control system, a driving system and an execution system, and is characterized in that the control system comprises a solid-state relay, and the display system comprises a switch; the test method comprises the following steps: S1, a variable voltage regulator is adopted to supply power to a system, and voltage is regulated to a voltage value matched with the load demand of a tested elevator star sealing contactor; s2, outputting a solid-state signal through a control system, controlling a solid-state relay to work in a random voltage switching SCR output mode, and shortening the link transmission time and controlling the detected star sealing contactor to act at high frequency by utilizing the high-speed response low-delay characteristic of the solid-state relay; meanwhile, feedback signals of a solid-state relay are collected, and the delay time of a control system of the system is obtained through calculation of a built-in algorithm of the control system, so that the contact feedback time of the star sealing contactor is accurately calculated. The testing process is transparent, data are clear, real-time monitoring is achieved, and results are judged in real time.

Description

Technical Field

[0001] This invention relates to the field of elevator sealing contactor testing technology, specifically a method for testing the adhesion of elevator sealing contactor contacts. Background Technology

[0002] Currently, the test method for contact adhesion of elevator sealing contactors is still based on GB / T14048.4 contactor test method. According to the duty cycle requirements, the working status of the contacts is checked after a specified number of operations.

[0003] The shortcomings of existing technologies are: they cannot view variables in the process, the process of product quality changes cannot be accurately recorded, and the contact time changes from each contact opening to closing or closing to opening cannot be recorded. Therefore, it is impossible to detect and analyze process variables in real time, view real-time trend charts, and detect inflection points of abnormal changes. Summary of the Invention

[0004] The purpose of this invention is to provide a test method for contact adhesion of elevator sealing contactors, in order to solve the problems in the prior art that the variables in the process cannot be viewed, the process of product quality changes cannot be accurately recorded, and the contact time changes from contact opening to closing or closing to opening each time cannot be recorded. As a result, it is impossible to detect and judge the process variables in real time, view real-time trend graphs, and find the inflection points of abnormal changes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a method for testing the adhesion of contacts of an elevator sealing contactor, comprising a display system, a control system, a drive system, and an execution system, wherein the control system includes a solid-state relay, and the display system includes a switch; The control system uses the high-speed response and low-delay characteristics of solid-state relays to shorten the link transmission time and control the operation of the star-sealing contactor at high frequency. At the same time, by collecting the feedback from the solid-state relays and processing it through the controller algorithm, the delay time of the control system itself can be collected, thereby more accurately calculating the contact feedback time of the star-sealing contactor.

[0006] The display system uses a Siemens display and a switch for data display and control. The control system uses a Siemens control system with solid-state output, controllable opening and closing times, and random voltage switching SCR output for solid-state relays. To further shorten the feedback time, the feedback time of each action is used as the system's feedback input through the control system program design, thereby enabling more precise control of the measured object.

[0007] The testing method includes the following steps: S1. A variable voltage regulator is used to power the system, and the voltage is adjusted to a value that matches the load requirements of the elevator sealing contactor under test. S2. By outputting solid-state signals through the control system, the solid-state relay is controlled to switch the SCR output mode at random voltage. The high-speed response and low-delay characteristics of the solid-state relay are utilized to shorten the link transmission time and control the operation of the tested sealing contactor at high frequency. At the same time, the feedback signal of the solid-state relay is collected and processed by the built-in algorithm of the control system to obtain the delay time of the system's own control system, and then the contact feedback time of the sealing contactor is accurately calculated. S3. Collect the action parameters of the tested sealing contactor contacts in each test, including the contact time from opening to closing and from closing to opening. Compare the collected test data for each test and determine the contact adhesion result through the preset program algorithm. S4. Data interaction between the display system and the control system is achieved through the switch. The display system displays test data, real-time trend charts and contact adhesion judgment results in real time, and also supports remote monitoring of the test status and cumulative number of tests of the contactor under test.

[0008] Preferably, the control system uses MOSFET solid-state output, with an operating voltage range of 20.4-28.8VDC, a maximum turn-on delay of 3.0μs, and a maximum turn-on delay of 1.0μs.

[0009] Preferably, the solid-state relay has an input voltage range of 4-32VDC and an output voltage range of 48-600VAC; the response time meets the following requirements: the turn-on response time is 0.1ms and the turn-off response time is 0.5 cycles.

[0010] Preferably, in the S2 control system program, the feedback time of each action of the tested sealing contactor is used as the feedback input of the system, and the control parameters of the control system for the tested sealing contactor are dynamically adjusted.

[0011] Preferably, the action parameters collected in S3 also include the action times of the main contacts, the sealing contacts and the auxiliary contacts of the tested sealing contactor, and the fault time thresholds of different contacts are recorded respectively. When the action time of a contact exceeds the corresponding fault time threshold, it is determined that the contact has an abnormal risk.

[0012] Preferably, the display system is used to display test data of multiple tested contactors, including the action time, failure time, cumulative number of tests and real-time operating status of each contactor, and also supports the generation of trend curves for parameters of each monitoring channel.

[0013] Preferably, the electrical circuit of the test system includes a power input circuit, a contactor detection point input circuit, and a contactor control coil output circuit. The power input circuit is overload protected by a circuit breaker. The contactor detection point input circuit can simultaneously receive detection signals from at least two contactors under test. The contactor control coil output circuit is directly controlled by the control system to output signals.

[0014] Preferably, the remote monitoring in S4 can acquire the status information of at least 5 tested sealing contactors in real time, including whether the device is in the start-up state, whether the remote control mode is used, and the cumulative number of tests for each device, and supports the generation of test reports.

[0015] Preferably, the trend curve is used to visually present the change pattern of touch point action time with the test cycle, making it easier to capture inflection points of abnormal changes; the test report supports local storage and remote export, and is used for test data traceability and compliance checks.

[0016] Preferably, the contactor detection point input circuit is connected to at least two detection signals from the contactor under test, supporting parallel testing of multiple contactors under test.

[0017] Compared with the prior art, the beneficial effects of the present invention are: The control system uses the high-speed response and low-delay characteristics of solid-state relays to shorten the link transmission time and control the operation of the star-sealing contactor at high frequency. At the same time, by collecting the feedback from the solid-state relays and processing it through the controller algorithm, the delay time of the control system itself can be collected, thereby more accurately calculating the contact feedback time of the star-sealing contactor.

[0018] The display system uses a Siemens monitor and a switch for data display and control. The control system also uses a Siemens system with solid-state outputs and controllable opening and closing times. The solid-state relays (SCRs) use random voltage switching outputs. To further shorten feedback time, the control system program incorporates the feedback time of each action as the system's feedback input, resulting in more precise control of the tested object. The testing process is transparent, the data is clear, and monitoring and result interpretation are performed in real time.

[0019] The trend curve visualizes the trajectory of touch point action time changes, which can locate abnormal nodes of parameter mutation (such as sudden extension of action time), upgrading from "post-judgment" to "process early warning"; the storage and export function of test reports is based on the actual needs of quality traceability and industry compliance, transforming test data into retainable and verifiable vouchers, realizing the binding of technical functions with actual use needs.

[0020] By customizing the fault time threshold and voltage adjustment range for different contacts, it adapts to elevator star-mounted contactors of different specifications, meeting the testing needs of factory inspection, operation and maintenance monitoring, or R&D verification scenarios. Customizable voltage adjustment range matches the load voltage requirements of different contactors, and customizable fault time threshold adapts to the normal operating time standards of different contacts. This allows the same testing method to cover multiple scenarios, including factory inspection (batch rapid screening), operation and maintenance monitoring (targeted re-inspection), and R&D verification (extreme parameter testing). The core is breaking the limitations of a single scenario through configurable parameters. The contactor detection point input circuit connects to at least two detection signals from the contactors under test, supporting parallel testing of multiple star-mounted contactors. Utilizing the multi-channel design of the electrical circuit, the control system can simultaneously receive and process the operating signals of multiple contactors under test. Through time-division multiplexing or parallel processing logic, the number of tests per unit time is increased without reducing test accuracy, solving the problem of traditional testing's "single-unit testing, low efficiency." The core is improving test efficiency through "channel multiplexing and parallel signal processing." Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a system diagram of the present invention; Figure 2 The electrical principle of this invention Figure 1 A schematic diagram; Figure 3 The electrical principle of this invention Figure 2 A schematic diagram. Detailed Implementation

[0022] 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 a part of the embodiments of the present invention, not all of them. 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. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0023] Please see Figure 1-3 In this embodiment of the invention, a method for testing the adhesion of contacts of an elevator sealing contactor includes a display system, a control system, a drive system, and an execution system. The control system includes a solid-state relay, and the display system includes a switch. The control system uses the high-speed response and low-delay characteristics of solid-state relays to shorten the link transmission time and control the operation of the star-sealing contactor at high frequency. At the same time, by collecting the feedback from the solid-state relays and processing it through the controller algorithm, the delay time of the control system itself can be collected, thereby more accurately calculating the contact feedback time of the star-sealing contactor.

[0024] The display system uses a Siemens display and a switch for data display and control. The control system uses a Siemens control system with solid-state output, controllable opening and closing times, and random voltage switching SCR output for solid-state relays. To further shorten the feedback time, the feedback time of each action is used as the system's feedback input through the control system program design, thereby enabling more precise control of the measured object.

[0025] The testing method includes the following steps: S1. A variable voltage regulator is used to power the system, and the voltage is adjusted to a value that matches the load requirements of the elevator sealing contactor under test. S2. By outputting solid-state signals through the control system, the solid-state relay is controlled to switch the SCR output mode at random voltage. The high-speed response and low-delay characteristics of the solid-state relay are utilized to shorten the link transmission time and control the operation of the tested sealing contactor at high frequency. At the same time, the feedback signal of the solid-state relay is collected and processed by the built-in algorithm of the control system to obtain the delay time of the system's own control system, and then the contact feedback time of the sealing contactor is accurately calculated. S3. Collect the action parameters of the tested sealing contactor contacts in each test, including the contact time from opening to closing and from closing to opening. Compare the collected test data for each test and determine the contact adhesion result through the preset program algorithm. S4. Data interaction between the display system and the control system is achieved through the switch. The display system displays test data, real-time trend charts and contact adhesion judgment results in real time, and also supports remote monitoring of the test status and cumulative number of tests of the contactor under test.

[0026] The control system uses MOSFET solid-state output, with an operating voltage range of 20.4-28.8VDC, a maximum turn-on delay of 3.0μs, and a maximum turn-on delay of 1.0μs.

[0027] The solid-state relay has an input voltage range of 4-32VDC and an output voltage range of 48-600VAC; the response time meets the following requirements: turn-on response time is 0.1ms and turn-off response time is 0.5 cycles.

[0028] The control system program in S2 uses the feedback time of each action of the tested sealing contactor as the feedback input of the system to dynamically adjust the control parameters of the tested sealing contactor.

[0029] The action parameters collected in S3 also include the action times of the main contacts, sealing contacts and auxiliary contacts of the tested sealing contactor, and record the fault time thresholds of different contacts. When the action time of a contact exceeds the corresponding fault time threshold, it is determined that the contact has an abnormal risk.

[0030] The display system is used to display test data of multiple tested contactors, including the action time, failure time, cumulative number of tests and real-time operating status of each contactor. It also supports the generation of trend curves for parameters of each monitoring channel to intuitively present the change pattern of parameters with test time.

[0031] The electrical circuit of the test system includes a power input circuit, a contactor detection point input circuit, and a contactor control coil output circuit. The power input circuit is overload protected by a circuit breaker. The contactor detection point input circuit can simultaneously receive detection signals from at least two contactors under test. The contactor control coil output circuit is directly controlled by the control system to output signals.

[0032] The remote monitoring in S4 can acquire the status information of at least 5 tested sealing contactors in real time, including whether the equipment is in the start-up state, whether the remote control mode is used, and the cumulative number of tests for each equipment. It also supports the generation of test reports, which facilitates subsequent data traceability and analysis.

[0033] The trend curve visually presents the changing pattern of touch point action time over the test cycle, facilitating the capture of inflection points of abnormal changes. The test report supports local storage and remote export for test data traceability and compliance checks. The trend curve, by visually presenting the trajectory of touch point action time changes, can locate abnormal nodes with sudden parameter changes (such as a sudden extension of action time), upgrading from "post-event judgment" to "process early warning." The storage and export functions of the test report are based on the actual needs of quality traceability and industry compliance, transforming test data into retainable and verifiable evidence, thus binding technical functions with actual usage requirements.

[0034] By customizing the fault time threshold and voltage adjustment range for different contacts, it adapts to elevator star-mounted contactors of different specifications, meeting the testing needs of factory inspection, operation and maintenance monitoring, or R&D verification scenarios. Customizable voltage adjustment range matches the load voltage requirements of different contactors, and customizable fault time threshold adapts to the normal operating time standards of different contacts. This allows the same testing method to cover multiple scenarios, including factory inspection (batch rapid screening), operation and maintenance monitoring (targeted re-inspection), and R&D verification (extreme parameter testing). The core is breaking the limitations of a single scenario through configurable parameters. The contactor detection point input circuit connects to at least two detection signals from the contactors under test, supporting parallel testing of multiple star-mounted contactors. Utilizing the multi-channel design of the electrical circuit, the control system can simultaneously receive and process the operating signals of multiple contactors under test. Through time-division multiplexing or parallel processing logic, the number of tests per unit time is increased without reducing test accuracy, solving the problem of traditional testing's "single-unit testing, low efficiency." The core is improving test efficiency through "channel multiplexing and parallel signal processing."

[0035] The system's control links (such as controllers and signal transmission channels) have inherent delays. If the time corresponding to the feedback signal is directly regarded as the actual feedback time of the contact, system errors will occur. By subtracting this inherent delay through algorithms, interference from non-contact factors can be eliminated, making the calculation results closer to the actual action state of the contact. This is the key technical support for achieving "accurate test data".

[0036] The working principle of this invention is as follows: the control system adopts the high-speed response and low-delay characteristics of solid-state relays, thereby shortening the link transmission time and controlling the operation of the star-sealing contactor at high frequency. At the same time, by collecting the feedback from the solid-state relays and processing it through the controller algorithm, the delay time of the control system itself can be collected, thereby more accurately calculating the contact feedback time of the star-sealing contactor.

[0037] The display system uses a Siemens display and a switch for data display and control. The control system uses a Siemens control system with solid-state output, controllable opening and closing times, and random voltage switching SCR output for solid-state relays. To further shorten the feedback time, the feedback time of each action is used as the system's feedback input through the control system program design, thereby enabling more precise control of the measured object.

[0038] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for testing the adhesion of contacts in an elevator sealing contactor, characterized in that: It includes a display system, a control system, a drive system, and an execution system. The control system includes solid-state relays, and the display system includes a switch. The testing method includes the following steps: S1. A variable voltage regulator is used to power the system, and the voltage is adjusted to a value that matches the load requirements of the elevator sealing contactor under test. S2. By outputting solid-state signals through the control system, the solid-state relay is controlled to operate in SCR output mode by randomly switching voltages. The high-speed response and low-delay characteristics of the solid-state relay are utilized to control the operation of the tested star-sealing contactor at high frequency. At the same time, the feedback signal of the solid-state relay is collected, and the delay time of the system's own control system is obtained through the built-in algorithm of the control system. Then, the contact feedback time of the star-sealing contactor is calculated. S3. Collect the action parameters of the tested sealing contactor contacts in each test, including the contact time from opening to closing and from closing to opening. Compare the collected test data for each test and determine the contact adhesion result through the preset program algorithm. S4. Data interaction between the display system and the control system is achieved through the switch. The display system displays test data, real-time trend charts and contact adhesion judgment results in real time, and also supports remote monitoring of the test status and cumulative number of tests of the contactor under test.

2. The method for testing the contact adhesion of an elevator sealing contactor according to claim 1, characterized in that: The control system uses MOSFET solid-state output, with an operating voltage range of 20.4-28.8VDC, a maximum turn-on delay of 3.0μs, and a maximum turn-on delay of 1.0μs.

3. The method for testing the contact adhesion of an elevator sealing contactor according to claim 1, characterized in that: The solid-state relay has an input voltage range of 4-32VDC and an output voltage range of 48-600VAC; the response time meets the following requirements: turn-on response time is 0.1ms and turn-off response time is 0.5 cycles.

4. The method for testing the contact adhesion of an elevator sealing contactor according to claim 1, characterized in that: The control system program in S2 uses the feedback time of each action of the tested sealing contactor as the feedback input of the system to dynamically adjust the control parameters of the tested sealing contactor.

5. The method for testing the contact adhesion of an elevator sealing contactor according to claim 1, characterized in that: The action parameters collected in S3 also include the action times of the main contacts, sealing contacts and auxiliary contacts of the tested sealing contactor, and record the fault time thresholds of different contacts. When the action time of a contact exceeds the corresponding fault time threshold, it is determined that the contact has an abnormal risk.

6. The method for testing the contact adhesion of an elevator sealing contactor according to claim 1, characterized in that: The display system is used to display test data of multiple tested contactors, including the action time, failure time, cumulative number of tests and real-time operating status of each contactor, and also supports the generation of trend curves for parameters of each monitoring channel.

7. The method for testing the contact adhesion of an elevator sealing contactor according to claim 1, characterized in that: The electrical circuit of the test system includes a power input circuit, a contactor detection point input circuit, and a contactor control coil output circuit. The power input circuit is overload protected by a circuit breaker. The contactor detection point input circuit is simultaneously connected to the detection signals of at least two contactors under test. The contactor control coil output circuit is directly controlled by the control system to output signals.

8. The method for testing the contact adhesion of an elevator sealing contactor according to claim 1, characterized in that: The S4 remote monitoring system acquires real-time status information of at least 5 tested sealing contactors, including whether the devices are in the start-up state, whether they are in remote control mode, and the cumulative number of tests for each device, and supports the generation of test reports.

9. The method for testing the contact adhesion of an elevator sealing contactor according to claim 1, characterized in that: The trend curve is used to visually present the change pattern of the contact action time with the test cycle, making it easier to capture inflection points of abnormal changes. The test reports support local storage and remote export, and are used for test data traceability and compliance checks.

10. The method for testing the adhesion of elevator sealing contactor contacts according to claim 1, characterized in that: The contactor detection point input circuit is connected to at least two detection signals from the contactor under test, supporting parallel testing of multiple contactors under test.

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