Elevator motor brake voltage monitoring system, monitoring method, medium and application

Abstract

This invention belongs to the field of braking system control technology, and discloses a monitoring system, method, medium, and application for monitoring the brake voltage of a lifting platform motor. A rectified voltage signal line is led out from the output terminal of the brake rectifier and connected to a DC instrument to display the current output voltage value of the brake rectifier. The range of parameters is set within the DC instrument; the voltage value is recorded, and the trend of the brake rectifier output voltage is statistically analyzed to determine whether the brake rectifier shows signs of deterioration. This invention's visual monitoring of the brake voltage of a cross-shaped lifting platform can promote weather management or be incorporated into daily inspection and confirmation items, quantifying the brake voltage value. This invention sets an output voltage range of DC 150V-180V; if the voltage is lower or higher than this range, the touchscreen will output an alarm, achieving automation. The performance degradation of the rectifier is easier to assess; the alarm during voltage anomalies allows for simple judgment, improving operability.

Description

Technical Field

[0001] This invention belongs to the field of braking system control technology, and particularly relates to a monitoring system, monitoring method, medium and application for monitoring the brake voltage of an elevator motor. Background Technology

[0002] In existing technologies, it is possible to determine whether the output voltage range of the brake rectifier is normal, and the output voltage value of the rectifier can be checked periodically and recorded to form a monitoring system.

[0003] In case of a fault, the presence or absence of output voltage from the rectifier can help determine whether the fault lies in the electrical control circuit or the mechanical components, thus shortening the MTTR (Mean Time To Turn). Adding a signal for abnormal rectifier output voltage allows alarm information to be displayed on the HMI (Human Machine Interface) when the rectifier malfunctions, improving the operability of fault handling. Setting an effective range for the rectifier output voltage, with an alarm message displayed on the HMI when it falls below the effective value (indicating rectifier degradation), provides preventative protection.

[0004] Furthermore, the painting workshop uses a large number of conveyor equipment with brake motors, resulting in frequent failures of the motor brake system, which often lead to prolonged shutdowns. These failures significantly impact mobility, and equipment failures within the drying oven area can result in scrapped vehicles and return trips. Troubleshooting is inconvenient because it's difficult to distinguish between faults in the brake system's electrical control circuit and mechanical components. Currently, there are regular inspections and part-time inspections (PM) for the brake mechanical components, but there are no inspection items for the brake electrical control circuit, especially the rectifier. Therefore, the controllability of faults is insufficient.

[0005] Based on the above analysis, the problems and defects of the existing technology are as follows: (1) The display instrument has a voltage pulsation of a few tenths of a volt under static conditions, and the signal line is easily interfered with by the power line, resulting in inaccurate detection. (2) At the moment of motor start-up and stop, due to the presence of reverse voltage, the DC voltage display will show a negative value momentarily, which is prone to erroneous signal output and false alarm. Summary of the Invention

[0006] To overcome the problems existing in related technologies, the present invention discloses an embodiment of a lifting platform motor brake voltage monitoring system, monitoring method, medium, and application. Specifically, it relates to a method for monitoring the brake voltage of a cross-shaped lifting platform motor.

[0007] The technical solution is as follows: A method for monitoring the brake voltage of a lift motor includes the following steps:

[0008] Step 1: Lead out the rectified voltage signal line from the output terminal of the brake rectifier and connect it to the DC instrument to display the current output voltage value;

[0009] Step two: Set the range value through the parameters inside the DC instrument;

[0010] Step 3: Record the voltage value and perform trend statistics on the output voltage of the brake rectifier to determine whether the brake rectifier has a deterioration tendency; Judgment method: when the output voltage is lower than 150V, it is judged that the rectifier performance has deteriorated.

[0011] In one embodiment of the present invention, step two, setting the range value of parameters inside the DC instrument, includes the following steps:

[0012] Instrument selection: Determine the rectifier output voltage as DC180V; based on the site conditions, determine the rectifier's effective operating voltage range as 150V-180V; select an instrument with a withstand voltage rating exceeding the maximum output voltage by ±199V; select an instrument series with a function module featuring event contact output.

[0013] Parameter adjustment: Set the input signal type, including: Input type A DC voltage ±199.99V; Set the voltage comparison output mode; Set the decimal point position; Select the voltage sampling state; Set the voltage range value, HH:180V, H:150V; Set the current noise voltage to 0V.

[0014] In one embodiment of the present invention, after setting the range value of the parameters inside the DC instrument in step two, the following steps are also required:

[0015] Overall signal cable wiring design;

[0016] Setting the software parameters for the program and human-computer interface.

[0017] In one embodiment of the present invention, the setting of the software parameters of the program and human-machine interface includes the following steps: when the rectifier output voltage exceeds the set range, the instrument event output contact is ON, and the external control DC24V relay ON / OFF action is activated, and the 24V relay contact outputs a signal to the PLC; the PLC needs to perform circuit design and editing according to the working conditions. When the elevator operates, if the rectifier output voltage exceeds the range within 0.5 seconds, the PLC outputs an alarm message, which is displayed in the human-machine interface and conveyed through the voice alarm system.

[0018] In one embodiment of the present invention, when the rectifier output voltage exceeds the set range, an alarm signal is output, indicating that the brake rectifier voltage is abnormal, and the cause of the fault is determined. The determination method is as follows: if the brake voltage is normal, it means that there is no problem with the power supply and rectifier output of the brake circuit, and it is directly determined to be a motor drive fault or a mechanical part fault.

[0019] In one embodiment of the present invention, step three involves visually displaying information about whether the brake rectifier exhibits a tendency to deteriorate through a human-machine interface.

[0020] Another object of the present invention is to provide a monitoring system for the brake voltage of a lift motor, comprising:

[0021] The output voltage signal line of the brake rectifier is connected to a DC instrument to display the current output voltage value of the rectifier.

[0022] The rectifier voltage anomaly detection module is used to output alarm signals for signals that exceed the voltage setting range of the DC instrument and to determine the cause of the fault; at the same time, it periodically records the voltage value to perform trend statistics on the output voltage of the brake rectifier and to determine whether the brake rectifier has a deterioration tendency.

[0023] The human-machine interface is used to provide feedback and visually display information on whether the brake rectifier shows signs of deterioration.

[0024] The DC instrument also integrates a voltage parameter range setting module, which is used to set the range of output parameters of the DC instrument.

[0025] Another object of the present invention is to provide a storage medium for receiving user input programs, wherein the stored computer programs enable electronic devices to execute the elevator motor brake voltage monitoring method.

[0026] Another object of the present invention is to provide a painting workshop conveying equipment, wherein the painting workshop conveying equipment is equipped with the aforementioned elevator motor brake voltage monitoring system.

[0027] Combining all the above technical solutions, the advantages and positive effects of this invention are as follows:

[0028] The method for monitoring the brake voltage of a lifting platform motor provided in this invention involves selecting and adjusting the DC instrument and its internal parameters, designing the overall signal cable wiring, and setting the software parameters of the program and human-machine interface. This achieves the following positive effects: the visual monitoring of the brake voltage of the cross-shaped lifting platform can promote weather management or be incorporated into daily inspection and confirmation items, allowing for the quantification of brake voltage values.

[0029] This invention sets the output voltage range to DC 150V-180V. If the voltage is lower or higher than the range, the touch screen will output an alarm (**rectifier voltage abnormality), thus achieving automation.

[0030] The performance degradation of the rectifier in this invention is easier to assess, and can be easily determined through alarms indicating abnormal voltage, thus improving operability. When an abnormal brake voltage alarm occurs, it indicates a fault in the brake circuit power supply or the rectifier. This can be addressed by directly measuring the rectifier's output power supply. If it is normal, simply replace the rectifier; if abnormal, investigate the rectifier's power supply circuit. This saves time wasted in determining whether the fault is due to a motor or mechanical issue.

[0031] In case of a fault, this invention allows for simpler fault location identification by monitoring the rectifier's voltage status, shortening response time and improving MTTR (Mean Time Tolerance). Before adopting this detection system, encountering motor overload faults required 3-5 manual operation tests to diagnose the problem. Furthermore, due to the influence of equipment structure and power distribution circuit location, diagnosing electrical or mechanical faults posed certain operational risks and typically took around 20 minutes, significantly impacting on-site production. With this detection system, when such a problem occurs, the fault range can be easily determined simply by checking for rectifier alarm signals, greatly reducing investigation time.

[0032] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit the disclosure of the present invention. Attached Figure Description

[0033] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0034] Figure 1 This is a flowchart of the elevator motor brake voltage monitoring method provided in an embodiment of the present invention;

[0035] Figure 2 This is a schematic diagram of the elevator motor brake voltage monitoring system provided in this embodiment of the invention;

[0036] Figure 3 This is a physical image of the elevator motor brake voltage monitoring system provided in this embodiment of the invention.

[0037] Figure 4 This is a schematic diagram of the elevator motor brake voltage monitoring system provided in an embodiment of the present invention;

[0038] Figure 5 The three internal relay signals provided in this embodiment of the invention provide alarm information through the human-machine interface;

[0039] Figure 6 This is a schematic diagram provided by an embodiment of the present invention for directly determining whether a fault is a motor drive fault or a mechanical fault;

[0040] Figure 7 This is a circuit diagram of the elevator motor brake voltage monitoring system provided in an embodiment of the present invention;

[0041] Figure 8 is a diagram of the alarm information display interface of the human-machine interface for voltage abnormality provided in an embodiment of the present invention.

[0042] In the figures: Figure 8(a) shows the alarm information display interface of elevator #16; Figure 8(b) shows the alarm information display interface of elevator #18; Figure 8(c) shows the alarm information display interface of elevator #20. Detailed Implementation

[0043] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] The elevator motor brake voltage monitoring method provided in this embodiment of the invention includes the selection and adjustment of DC instruments and internal parameters, the wiring design of the overall signal lines, and the setting of software parameters for the program and human-machine interface.

[0045] like Figure 1 As shown, the elevator motor brake voltage monitoring method provided in this embodiment of the invention includes:

[0046] S101, from the output terminal of the brake rectifier, leads out the rectified voltage signal line and connects it into the instrument to display the current output voltage value of the brake rectifier.

[0047] S102, by setting a range of parameters within the instrument, an alarm signal will be output if the value exceeds the range, indicating an abnormal rectified voltage, to determine the cause of the fault. Troubleshooting method: If the brake voltage is normal, it indicates that the brake circuit power supply and rectified output are not the problem, and the fault can be directly determined to be a motor drive fault or a mechanical fault. Figure 6 As shown, the line connecting BK represents the brake circuit, and the black part of the line connecting QL represents the motor drive circuit.

[0048] S103, simultaneously records voltage values ​​periodically to statistically analyze the output voltage trend of the brake rectifier and determine whether the brake rectifier shows signs of deterioration. This information is then displayed visually through the human-machine interface. Judgment method: When the output voltage drops below 150V, it is considered that the rectifier performance has deteriorated.

[0049] like Figure 2 As shown, the present invention provides a monitoring system for the brake voltage of a lift motor, comprising:

[0050] The voltage signal line at the output end of the brake rectifier 1 is connected to the DC instrument 2 to display the current output voltage value of the rectifier;

[0051] The rectifier voltage abnormality judgment module 3 is used to output an alarm signal when the signal exceeds the voltage setting range of the DC instrument 2 and to determine the cause of the fault; at the same time, it periodically records the voltage value to perform trend statistics on the output voltage of the brake rectifier 1 and determines whether the brake rectifier 1 has a deterioration tendency.

[0052] The human-machine interface 4 is used to provide feedback and visually display information on whether the brake rectifier 1 has a tendency to deteriorate.

[0053] The DC instrument 2 also integrates a voltage parameter range setting module 2-1, which is used to set the output parameter range value of the DC instrument.

[0054] Figure 3 This is the physical structure of the elevator motor brake voltage monitoring system provided in this embodiment of the invention.

[0055] The software parameter settings for the program and human-machine interface of this invention include: when the rectifier output voltage exceeds the set range, the instrument event output contact turns ON, controlling the external DC24V relay to ON / OFF, and the 24V relay contact outputs a signal to the PLC. The PLC needs to be designed and edited according to the working conditions. When the elevator operates (motor operates), if the rectifier output voltage exceeds the range within 0.5 seconds, the PLC will output an alarm message (JTEKT PC10 series CPU). This alarm message will be displayed on the human-machine interface and conveyed to maintenance personnel through a voice alarm system.

[0056] The technical solution of the present invention will be further described below with reference to specific embodiments.

[0057] Example

[0058] The present invention provides the selection of DC instruments and the setting and adjustment of their internal parameters; specifically including:

[0059] Instrument selection requirements: The output voltage of this rectifier must be DC180V (model 05F-4FB2); the effective operating voltage range of the rectifier (150V-180V) must be determined according to the on-site working conditions; an instrument with a withstand voltage rating exceeding the maximum output voltage (Omron K3HB-V series) ±199V must be selected; and an instrument in this series with a function module featuring event contact output must be selected.

[0060] Parameter adjustment requirements: Set the input signal type (input type A DC voltage ±199.99V); set the voltage comparison output mode (zone output type); set the decimal point position (display two decimal places); select the voltage sampling state (continuous normal state); set the voltage range value (HH:180V, H:150V); to eliminate noise voltage display, set the current noise voltage to 0V (force 0 digit).

[0061] In a preferred embodiment, the settings of the software parameters for the program and the human-machine interface include:

[0062] When the rectifier output voltage exceeds the set range, the instrument's event output contact turns ON, controlling the external DC24V relay to ON / OFF, and the 24V relay contact outputs a signal to the PLC. The PLC needs to be designed and edited according to the operating conditions. When the elevator operates (motor operates), if the rectifier output voltage exceeds the range within 0.5 seconds, the PLC will output an alarm message (JTEKT PC10 series CPU). This alarm message will be displayed on the HMI and communicated to maintenance personnel via a voice alarm system. Figure 4 This is the principle of the elevator motor brake voltage monitoring system provided in this embodiment of the invention.

[0063] Figure 5 The procedure provided in this embodiment of the invention sends instructions to the control room via the FL-NET network and provides feedback alarm voice information.

[0064] Under normal conditions, the rectifier malfunction signal X1cc is contact B, which is in the OFF state in the circuit. When the elevator rises or falls, if the rectifier does not reach the set value range (150-180V) within 0.5 seconds (timer T002), the timer turns ON and outputs alarm signal GM0012 (see...). Figure 5 );

[0065] Figure 5 The rectifier malfunction signal X1CD provided in this embodiment of the invention is a B contact, which is in the OFF state in the circuit. When the elevator rises or falls, if the rectifier does not reach the set value range (150-180V) within 0.5 seconds (T003 timer), the timer turns ON and outputs alarm signal GM0013 (see...). Figure 5 );

[0066] Under normal conditions, the rectifier malfunction signal X1CE is contact B, which is in the OFF state in the circuit. When the elevator rises or falls, if the rectifier does not reach the set value range (150-180V) within 0.5 seconds (timer T005), the timer turns ON and outputs alarm signal GM0014 (see...). Figure 5 ).

[0067] In this embodiment of the invention, an alarm signal is output when the value exceeds the range, indicating an abnormal brake rectifier voltage, and the cause of the fault is determined. The determination method is as follows: a normal brake voltage indicates that the power supply and rectifier output of the brake circuit are not problematic, and the fault can be directly determined to be a motor drive fault or a mechanical fault. Figure 6As shown, the line connecting BK represents the brake circuit, and the black part of the line connecting QL represents the motor drive circuit.

[0068] In an embodiment of the present invention, Figure 7 This is the circuit principle of the elevator motor brake voltage monitoring system provided in the embodiment.

[0069] The positive effects of the present invention will be further described below with reference to specific experimental data.

[0070] As shown in Figure 8, the voltage abnormality human-machine interface provided in this embodiment of the invention will display alarm information. Figure 8(a) shows the alarm information display interface of elevator #16; Figure 8(b) shows the alarm information display interface of elevator #18.

[0071] Figure 8(c) shows the alarm information display interface of elevator #20.

[0072] The monitoring method of the present invention was used to conduct experiments on elevators #16, #18, and #20. The experimental data are shown in the table below.

[0073]

[0074] Effect: By confirming the daily output voltage value of the rectifier, the trend of abnormality of the rectifier can be determined, so that the fault can be predicted before it occurs and preventive maintenance activities can be carried out.

[0075] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

[0076] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure should be limited by the appended claims.

Claims

1. A method for monitoring the voltage of an elevator machine brake, characterized by The elevator motor brake voltage monitoring method comprises the following steps: Step one: a rectified voltage signal line is led out from the brake rectifier output end and connected to the DC instrument to display the current output voltage value; Step two: the parameter setting range value in the DC instrument is set; Step three: the voltage value is recorded and the trend of the brake rectifier output voltage is counted to determine whether the brake rectifier has a deterioration tendency; the determination method is that when the output voltage is lower than 150V, the rectifier performance is determined to be deteriorated; The step two of setting the parameter range value in the DC instrument comprises the following steps: Instrument selection: the rectifier output voltage is determined to be DC 180V; the rectifier effective voltage range is determined to be 150V-180V according to the field working conditions; the instrument with a voltage level exceeding the maximum output voltage ±199V is selected; the functional module with event contact output in the series instrument is selected; Parameter adjustment: the type of input signal is set, including: input type A DC voltage ±199.99V; the voltage comparison output mode is set; the decimal point position is set; the voltage sampling state is selected; the voltage range value is set, HH: 180V, H: 150V; the current noise voltage is set to 0V; After the step two of setting the parameter range value in the DC instrument, the following steps are further needed: Overall signal line wiring design; Program and software parameter setting of human-machine interface; The program and software parameter setting of human-machine interface comprise the following steps: when the rectifier output voltage exceeds the set range, the instrument event output contact ON is connected to the external control DC 24V relay ON / OFF action, and the 24V relay contact outputs a signal to the PLC; the PLC needs to be designed and edited according to the working conditions; when the elevator moves, if the rectifier output voltage exceeds the range within 0.5 seconds, the PLC outputs an alarm information, which is displayed on the human-machine interface and conveyed through the voice alarm system; When the rectifier output voltage exceeds the set range, the alarm signal is output, the brake rectifier voltage is abnormal, and the fault reason is determined; the determination method is that the brake voltage is normal, indicating that the brake circuit power supply and rectifier output are normal, and the motor drive fault or mechanical part fault is directly determined.

2. The elevator machine brake voltage monitoring method of claim 1, wherein, The step three feeds back the information of whether the brake rectifier has a deterioration tendency through the human-machine interface for visual display.

3. An elevator motor brake voltage monitoring system for implementing the method of any one of claims 1 to 2, wherein The elevator motor brake voltage monitoring system comprises: A brake rectifier, the voltage signal line of the output end is connected to the DC instrument to display the current output voltage value; A rectifier voltage abnormality determination module for outputting an alarm signal to the signal exceeding the voltage setting range value of the DC instrument and determining the fault reason; at the same time, the voltage value is recorded regularly to count the trend of the brake rectifier output voltage and determine whether the brake rectifier has a deterioration tendency; A human-machine interface for feeding back the information of whether the brake rectifier has a deterioration tendency and visually displaying.

4. The elevator machine brake voltage monitoring system of claim 3, wherein, The DC instrument further integrates a voltage parameter range setting module for setting the output parameter range value of the DC instrument.

5. A program storage medium receiving user input, the stored computer program causing an electronic device to execute the elevator motor brake voltage monitoring method of any one of claims 1 to 2.

6. A painting plant transfer apparatus characterized by comprising: The painting plant transport equipment is equipped with the elevator motor brake voltage monitoring system of any one of claims 3 to 4.

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