Elevator balance coefficient detection device

Abstract

The utility model discloses an elevator balance coefficient detection device which comprises a main control module, a detection module, a power supply module, an operation module and a communication module, and the main control module is respectively connected with the detection module, the power supply module, the operation module and the communication module. The master control module comprises a central processing unit, an analog-to-digital conversion unit, a power management unit, a first interface unit, a second interface unit and a third interface unit. The central processing unit is connected with the analog-to-digital conversion unit, the power management unit, the first interface unit, the second interface unit and the third interface unit. The detection module comprises a voltage detection module and a current detection module, and the voltage detection module and the current detection module are connected with the analog-to-digital conversion unit; the communication module is connected with the first interface unit. According to the utility model, the elevator balance coefficient is rapidly and automatically detected, and the safety and the stability of elevator operation are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator safety, in particular to an elevator balance coefficient detection device. Background Art

[0002] Most of the current vertical lifts use traction elevators. In order to ensure the normal operation of traction elevators, the balance coefficient of the elevator needs to be tested. If the test result is wrong or the error is large, it may cause a safety accident in the elevator and cause economic losses. The existing elevator balance coefficient detection process usually requires the elevator car to run to the same horizontal position with the counterweight under different loads, collect current or voltage, and draw a load curve based on current or voltage. The balance coefficient is determined by the intersection of the upward and downward running curves, so multiple tests are required. At present, the moment when the elevator car and the counterweight run to the same horizontal position is determined by the inspector observing the mark on the wire rope. The balance coefficient is also read manually by the inspector from the load curve diagram. There is interference from human factors, which is more likely to cause errors. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art. The utility model provides an elevator balance coefficient detection device, which realizes rapid and automatic detection of the elevator balance coefficient and effectively improves the safety and stability of elevator operation.

[0004] The utility model provides an elevator balance coefficient detection device, comprising a main control module, a detection module, a power module, an operation module, and a communication module, wherein the main control module is connected to the detection module, the power module, the operation module, and the communication module respectively;

[0005] The main control module includes a central processing unit, an analog-to-digital conversion unit, a power management unit, a first interface unit, a second interface unit, and a third interface unit, and the central processing unit is connected to the analog-to-digital conversion unit, the power management unit, the first interface unit, the second interface unit, and the third interface unit respectively;

[0006] The detection module includes a voltage detection module and a current detection module, and the voltage detection module and the current detection module are connected to the analog-to-digital conversion unit;

[0007] The communication module is connected to the first interface unit.

[0008] Furthermore, the operation module includes a built-in operation unit and a remote operation unit, the built-in operation unit is connected to the second interface unit and the communication module, and the remote operation unit is connected to the third interface unit and the communication module.

[0009] Furthermore, the communication module is a Bluetooth communication module.

[0010] Furthermore, the first interface unit is an SCI interface unit.

[0011] Furthermore, the second interface unit is an I / O interface unit.

[0012] Furthermore, the third interface unit is a CAN BUS interface unit.

[0013] Furthermore, the power module includes a charging unit, a BMS battery management unit, a battery, and a DC / DC conversion unit. The charging unit is connected to the BMS battery management unit, the BMS battery management unit is connected to the battery, the battery is connected to the DC / DC conversion unit, and the DC / DC conversion unit is respectively connected to the power management unit, the voltage detection module, and the current detection module.

[0014] Furthermore, the voltage detection module is provided with a first proportional integral circuit, a high impedance circuit and three high voltage probes.

[0015] Furthermore, the current detection module is provided with a second proportional integral circuit and two open-close type Hall current sensors.

[0016] Furthermore, the central processing unit is a high-speed DSP processor.

[0017] The utility model provides an elevator balance coefficient detection device. By setting a main control module with a high-speed DSP central processing unit as the core and a detection module, the voltage signal and current signal of the elevator motor are collected at the same time. After a single detection, the balance coefficient of the elevator can be calculated by the central processing unit. Compared with manual detection, the obtained elevator balance coefficient is more accurate and efficient, and automatic detection of the elevator balance coefficient is realized, effectively improving the safety and stability of elevator operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 It is a structural diagram of the elevator balance coefficient detection device in an embodiment of the present utility model. DETAILED DESCRIPTION

[0020] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] An embodiment of the present utility model provides an elevator balance coefficient detection device, which includes a main control module, a detection module, a power module, an operation module, and a communication module. The main control module is connected to the detection module, the power module, the operation module, and the communication module respectively.

[0022] In an optional implementation of this embodiment, as Figure 1 As shown, Figure 1 The figure shows the architecture diagram of the elevator balance coefficient detection device in the embodiment of the present utility model. The elevator balance coefficient detection device includes a main control module, a detection module, a power module, an operation module, and a communication module. The main control module is connected to the detection module, power module, operation module, and communication module respectively.

[0023] In an optional implementation of this embodiment, the main control module includes a central processing unit, an analog-to-digital conversion unit, a power management unit, a first interface unit, a second interface unit, and a third interface unit, and the central processing unit is respectively connected to the analog-to-digital conversion unit, the power management unit, the first interface unit, the second interface unit, and the third interface unit.

[0024] In an optional implementation of this embodiment, the detection module includes a voltage detection module and a current detection module, and the voltage detection module and the current detection module are connected to the analog-to-digital conversion unit.

[0025] In an optional implementation of this embodiment, three high-voltage voltage probes are provided on the voltage detection module.

[0026] Specifically, the three high-voltage voltage probes are respectively connected to the U-phase, V-phase, and W-phase power supply terminals of the elevator motor to collect the three-phase line voltage signals of the U-phase, V-phase, and W-phase of the elevator motor, and send the line voltage signals to the analog-to-digital conversion unit of the main control module.

[0027] Furthermore, a first proportional integral circuit and a high impedance circuit are provided between the voltage detection module and the analog-to-digital conversion unit. The high impedance circuit attenuates the high-voltage line voltage signal collected by the high-voltage voltage probe, and then converts the attenuated high-voltage line voltage signal into a signal that can be directly received by the analog-to-digital conversion unit through the first proportional integral circuit. The signal is then converted into a digital signal by the analog-to-digital conversion unit and transmitted to the central processing unit for processing.

[0028] A high-impedance circuit is set here to directly detect the elevator motor AC voltage with a peak value of up to 800V without going through isolation processing.

[0029] In an optional implementation of this embodiment, two open-close type Hall current sensors are provided on the current detection module.

[0030] Specifically, the two opening and closing Hall current sensors are respectively connected to the U-phase and V-phase power supply terminals of the elevator motor, and are used to collect the U-phase and V-phase line current signals of the elevator motor and send the line current signals to the analog-to-digital conversion unit of the main control module.

[0031] Furthermore, a second proportional integral circuit is provided between the current detection module and the analog-to-digital conversion unit. The second proportional integral circuit converts the line current signal collected by the current sensor into a model that can be directly received by the analog-to-digital conversion unit, and then converts it into a digital signal through the analog-to-digital conversion unit and transmits it to the central processing unit for processing.

[0032] In an optional implementation of this embodiment, the communication module is a Bluetooth communication module.

[0033] In an optional implementation of this embodiment, the first interface unit is an SCI interface unit.

[0034] Specifically, the SCI interface unit is a serial communication interface, and communicates using an SCI serial communication method.

[0035] In an optional implementation of this embodiment, the second interface unit is an I / O interface unit.

[0036] In an optional implementation of this embodiment, the third interface unit is a CAN BUS interface unit.

[0037] Specifically, the CAN BUS interface unit communicates using a CAN bus communication method.

[0038] In an optional implementation of this embodiment, the communication module is connected to the first interface unit.

[0039] In an optional implementation of this embodiment, the operation module includes a built-in operation unit and a remote operation unit, the built-in operation unit is connected to the second interface unit and the communication module, and the remote operation unit is connected to the third interface unit and the communication module.

[0040] Specifically, the built-in operation unit directly exchanges data with the second interface unit of the main control module, namely the I / O interface unit, to achieve direct operation of the device, parameter setting, detection, display and data storage functions.

[0041] Furthermore, the remote operation unit exchanges data with the third interface unit of the main control module, namely the CAN BUS interface unit, via the CAN BUS protocol to achieve remote operation of the device.

[0042] It should be noted that the built-in operation unit and the remote operation unit can also exchange data with the first interface unit through the SCI serial communication protocol by connecting to the communication module.

[0043] In an optional implementation of this embodiment, the built-in operating unit is provided with a liquid crystal display and operating buttons.

[0044] In an optional implementation of this embodiment, the power module includes a charging unit, a BMS battery management unit, a battery, and a DC / DC conversion unit. The charging unit is connected to the BMS battery management unit, the BMS battery management unit is connected to the battery, the battery is connected to the DC / DC conversion unit, and the DC / DC conversion unit is respectively connected to the power management unit, the voltage detection module, and the current detection module.

[0045] Specifically, the charging unit is connected to a 220V AC power supply, and the charging unit outputs the power to the BMS battery management unit after isolation, rectification, voltage reduction, voltage stabilization and other transformations.

[0046] Furthermore, the BMS is used to manage the battery's charging current, charging voltage, temperature and other parameters, while limiting the battery's discharge current to prevent short circuits and other battery faults, thereby ensuring stable power supply and reliable operation.

[0047] More preferably, the battery is a single 3.6V lithium-ion battery.

[0048] Furthermore, the DC / DC conversion unit is used to convert the electric energy of the battery into a power supply of the voltage level required by each module and unit of the device.

[0049] In an optional implementation of this embodiment, the central processing unit is a high-speed DSP processor.

[0050] Specifically, the central processing unit processes the voltage data and current data collected by the detection module, samples the instantaneous voltage value and the instantaneous current value of the elevator motor, and obtains the voltage composite vector and the current composite vector in the two-phase coordinate system after Calrk transformation, and then calculates the elevator balance coefficient.

[0051] In summary, the embodiment of the present invention proposes an elevator balance coefficient detection device. By setting a main control module with a high-speed DSP central processor as the core and a detection module, the voltage signal and current signal of the elevator motor are collected at the same time. The balance coefficient of the elevator can be calculated after a single detection. Compared with manual calculation, the obtained elevator balance coefficient is more accurate and efficient, and automatic detection of the elevator balance coefficient is realized, effectively improving the safety and stability of elevator operation.

[0052] The above is a detailed introduction to an elevator balance coefficient detection device provided by an embodiment of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. An elevator balance coefficient detection device, characterized in that: It includes a main control module, a detection module, a power module, an operation module, and a communication module, wherein the main control module is connected to the detection module, the power module, the operation module, and the communication module respectively; The main control module includes a central processing unit, an analog-to-digital conversion unit, a power management unit, a first interface unit, a second interface unit, and a third interface unit, and the central processing unit is connected to the analog-to-digital conversion unit, the power management unit, the first interface unit, the second interface unit, and the third interface unit respectively; The detection module includes a voltage detection module and a current detection module, and the voltage detection module and the current detection module are connected to the analog-to-digital conversion unit; The communication module is connected to the first interface unit; The operation module includes a built-in operation unit and a remote operation unit, the built-in operation unit is connected to the second interface unit and the communication module, and the remote operation unit is connected to the third interface unit and the communication module; The voltage detection module is provided with a first proportional integral circuit, a high impedance circuit and three high voltage voltage probes; The current detection module is provided with a second proportional integral circuit and two open-close type Hall current sensors; The central processing unit is a high-speed DSP processor; The first interface unit is an SCI interface unit; The second interface unit is an I / O interface unit; The third interface unit is a CAN BUS interface unit.

2. The elevator balance coefficient detection device according to claim 1, characterized in that: The communication module is a Bluetooth communication module.

3. The elevator balance coefficient detection device according to claim 1, characterized in that: The power module includes a charging unit, a BMS battery management unit, a battery, and a DC / DC conversion unit. The charging unit is connected to the BMS battery management unit, the BMS battery management unit is connected to the battery, the battery is connected to the DC / DC conversion unit, and the DC / DC conversion unit is respectively connected to the power management unit, the voltage detection module, and the current detection module.

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