Power transmission system for an elevator and elevator

Abstract

The application relates to an elevator power transmission system and an elevator, which comprises the following steps: respectively arranging a control cabinet end associated box and at least one device end associated box at a control cabinet and a shaft terminal device, connecting the control cabinet end associated box and the device end associated box through a power line, connecting the control cabinet end associated box to a main power output end of an elevator control cabinet to receive external multi-channel signal source input, and connecting the device end associated box to a power input end of the shaft terminal device, so that multi-channel digital signals of different frequency bands are coupled to the power line, power line synchronous transmission of electric energy and high-frequency communication signals is realized, wiring of the shaft is effectively reduced, and the debugging and maintenance difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to a power transmission system for elevators and an elevator, belonging to the field of elevator technology. Background Technology

[0002] As the core channel of a vertical transportation system, the internal cable layout of elevator shafts directly restricts equipment safety and maintenance efficiency. Currently, elevator systems require dedicated cables for control cabinets, landing calls, car lighting, video surveillance, and intercom devices, resulting in high cable density within the shaft. This high-density cabling leads to three structural contradictions: firstly, significant space encroachment; secondly, dramatically increased installation and commissioning complexity; and thirdly, uncontrolled maintenance costs, as cable fault location requires segment-by-segment troubleshooting, resulting in high maintenance costs. Even more serious is the fact that with the intelligent upgrade of elevators, the addition of new sensors (such as vibration monitoring and facial recognition) will further exacerbate cable redundancy, pushing traditional cabling methods to near physical limits. Therefore, structural innovation is urgently needed to simultaneously reduce cable length, simplify the number of cables, and streamline maintenance processes while ensuring functional integrity, fundamentally optimizing shaft space utilization and system maintainability. Utility Model Content

[0003] The purpose of this utility model is to provide an elevator power transmission system and an elevator to solve the above-mentioned problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a power transmission system for elevators, the power transmission system comprising;

[0005] The enclosure includes a control cabinet-side associated enclosure and at least one equipment-side associated enclosure;

[0006] A power transmission module is built into the enclosure. The power transmission module includes a signal modulation unit, a signal coupling amplification unit, and a signal demodulation unit that are connected in sequence.

[0007] A power cord connects the control cabinet-side associated box and the equipment-side associated box. The control cabinet-side associated box is connected to the main power output terminal of the elevator control cabinet to receive input from multiple external signal sources. The equipment-side associated box is connected to the power input terminal of the hoistway terminal equipment. The power transmission module is used to couple multiple digital signals of different frequency bands to the power cord. The power cord is used to synchronously transmit electrical energy and high-frequency communication signals.

[0008] Furthermore, the signal source includes at least two of the following: communication bus signal, digital telephone signal, camera video stream signal, and dry contact switch signal, and at least two of the signal sources are connected to the signal modulation unit.

[0009] Furthermore, the power transmission module also includes an error correction coding module and an adaptive equalization module for suppressing electromagnetic interference in the elevator shaft and compensating for signal attenuation.

[0010] Furthermore, the associated enclosure includes a shielded metal shell and a magnetic ring filter, the magnetic ring filter being fitted onto the port where the power line enters the shielded metal shell.

[0011] Furthermore, the voltage rating of the power supply line is AC220V or DC24V.

[0012] Furthermore, the device-side associated enclosure is deployed in the car top maintenance box, the landing call box, or the pit equipment box and connected to the local interface of the terminal equipment to restore the demodulated signal.

[0013] This application also provides an elevator, including the elevator power transmission system described above.

[0014] The beneficial effects of this utility model are as follows: This application sets up a control cabinet-end association box and at least one equipment-end association box at the control cabinet and the hoistway terminal equipment respectively, and connects the control cabinet-end association box and the equipment-end association box through a power line. The control cabinet-end association box signal is connected to the main power output terminal of the elevator control cabinet to receive external multi-channel signal source input, and the equipment-end association box signal is connected to the power input terminal of the hoistway terminal equipment. This realizes the coupling of multiple digital signals of different frequency bands to the power line, thereby realizing the synchronous transmission of electrical energy and high-frequency communication signals on the power line, effectively reducing the wiring in the hoistway and reducing the difficulty of debugging and maintenance.

[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the power transmission module of an elevator power transmission system according to an embodiment of this application;

[0017] Figure 2 This is a topology diagram of an elevator power transmission system according to an embodiment of this application. Detailed Implementation

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0019] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They 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 be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

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

[0021] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. Furthermore, in this utility model, unless otherwise explicitly specified and limited, "on" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium.

[0022] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0023] Please refer to Figures 1 to 2 An embodiment of this application illustrates an elevator power transmission system, which includes a housing 10, power transmission modules 11, and a power line 40. By setting power transmission modules 11 at both ends of the power line 40 for signal modulation and demodulation, synchronous transmission of electrical energy and high-frequency communication signals can be achieved through the power line 40, thereby reducing the wiring in the shaft and lowering the difficulty of debugging and maintenance.

[0024] The enclosure 10 includes a control cabinet-side associated enclosure and at least one equipment-side associated enclosure. The number of equipment-side associated enclosures is matched to the number of terminal devices in the hoistway. It should be noted that the control end here refers to the elevator control cabinet 20, and the equipment end refers to the hoistway and the elevator car installed therein.

[0025] The power transmission module 11 is built into the enclosure 10. The power transmission module 11 includes a signal modulation unit, a signal coupling amplification unit, and a signal demodulation unit connected sequentially. The input terminal of the signal modulation unit of the power transmission module 11 located in the control cabinet-side enclosure is electrically connected to the multi-channel external signal source interface 12. The input terminal of the signal coupling amplification unit is electrically connected to the signal modulation unit, and its output terminal is physically coupled to the power line 40. The input terminal of the signal demodulation unit in the equipment-side enclosure is electrically connected to the power line 40, and its output terminal is electrically connected to the terminal equipment interface. The signal modulation unit, signal coupling amplification unit, and signal demodulation unit are connected via a signal transmission unit, which consists of a PCB microstrip line, filter circuit, gold-plated pins, etc. By eliminating the inter-unit wires, the number of low-voltage cables in the shaft is directly reduced. The signal modulation unit, signal coupling amplification unit, signal transmission unit, and signal demodulation unit are all existing technologies and will not be described in detail here.

[0026] Power cable 40 connects the control cabinet-side associated box and the equipment-side associated box. The control cabinet-side associated box signal is connected to the main power output terminal of the elevator control cabinet 20 to receive external multi-channel signal input. The equipment-side associated box signal is connected to the power input terminal of the hoistway terminal equipment. Power transmission module 11 is used to couple multiple digital signals of different frequency bands to power cable 40. Power cable 40 is used to synchronously transmit electrical energy and high-frequency communication signals. The enclosure 10 is also equipped with a multi-position power input interface 13 and a power output interface 14 electrically connected to the power transmission module 11 to facilitate signal reception and coupling of modulated multi-channel communication signals to power cable 40.

[0027] In one embodiment, the signal source includes at least two of the following: communication bus signal, digital telephone signal, camera video stream signal, and dry contact switch signal. These at least two signal sources are connected to the signal modulation unit. Communication, camera, voice call, and dry contact digital signals are received and parsed through different functional link interfaces, thereby achieving the goal of efficient multi-channel transmission.

[0028] In one embodiment, the power transmission module 11 further includes an error correction coding module and an adaptive equalization module for suppressing electromagnetic interference in the elevator shaft and compensating for signal attenuation. The core of the error correction coding module is an FPGA chip, which uses elevator-specific shortened RS coding to physically implement 16-byte error correction capability. The core of the adaptive equalization module is a feedback circuit composed of an adjustable resistor array and an operational amplifier, which is used to detect the frequency domain attenuation curve caused by the length of the power line 40 in real time. The two work together to reduce the bit error rate to within a safe threshold using physical circuitry. This is existing technology and will not be described in detail here.

[0029] In one embodiment, the associated enclosure includes a shielded metal shell and a magnetic ring filter, with the magnetic ring filter fitted at the port where the power line 40 enters the shielded metal shell. By setting up the shielded metal shell and the magnetic ring filter, the normal operation of the signal modulation unit, signal coupling amplification unit, and signal demodulation unit is ensured, thereby achieving high-frequency noise suppression and signal integrity protection.

[0030] In one embodiment, the voltage rating of the power supply line 40 is AC220V or DC24V. Admittedly, in other embodiments, the voltage rating of the power supply line 40 may be other ratings, which can be set as needed.

[0031] In one embodiment, the device-associated enclosure is deployed in the car top maintenance box, the landing call box, or the pit equipment box and is connected to the terminal equipment via a local interface to restore the demodulated signal.

[0032] In one embodiment, the number of output cables of the terminal device interface is less than the number of input cables of the multi-channel external signal source interface 12, and there are no independently laid communication cables connecting the control cabinet end and the associated box of the equipment end, thereby reducing the number of independent cables and improving anti-interference and installation efficiency.

[0033] Please refer to Figure 2 In this embodiment, the elevator power transmission system includes a control cabinet-side associated box located at the control cabinet 20 and three device-side associated boxes 10 respectively located on the hoistway terminal equipment. The control cabinet-side associated box contains a control cabinet power transmission module 11a, and the three device-side associated boxes contain a hoistway power transmission module 11b, a pit bottom power transmission module 11c, and a car top power transmission module 11d respectively. The hoistway power transmission module 11b is mainly used to connect to the external communication 31, the pit bottom power transmission module 11c is used to connect to the pit I / O communication interface 32, and the car top power transmission module 11d is used to connect the car top I / O interface to the main board communication signal interface 33, the car monitoring video signal interface 34, and the voice call signal interface 35.

[0034] This application also provides an elevator, including the elevator power transmission system described above.

[0035] This application sets up a control cabinet-side associated box and at least one device-side associated box at the control cabinet and the hoistway terminal equipment, respectively, and connects the control cabinet-side associated box and the device-side associated box via a power line. The control cabinet-side associated box signal is connected to the main power output terminal of the elevator control cabinet to receive input from multiple external signal sources, and the device-side associated box signal is connected to the power input terminal of the hoistway terminal equipment. This enables the coupling of multiple digital signals of different frequency bands to the power line, thereby achieving synchronous transmission of electrical energy and high-frequency communication signals on the power line, effectively reducing the wiring in the hoistway and lowering the difficulty of debugging and maintenance.

[0036] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0037] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A power transmission system for elevators, characterized in that, The power transmission system includes; The enclosure includes a control cabinet-side associated enclosure and at least one equipment-side associated enclosure; A power transmission module is built into the enclosure. The power transmission module includes a signal modulation unit, a signal coupling amplification unit, and a signal demodulation unit that are connected in sequence. A power cord connects the control cabinet-side associated box and the equipment-side associated box. The control cabinet-side associated box is connected to the main power output terminal of the elevator control cabinet to receive input from multiple external signal sources. The equipment-side associated box is connected to the power input terminal of the hoistway terminal equipment. The power transmission module is used to couple multiple digital signals of different frequency bands to the power cord. The power cord is used to synchronously transmit electrical energy and high-frequency communication signals.

2. The elevator power transmission system as described in claim 1, characterized in that, The signal source includes at least two of the following: communication bus signal, digital telephone signal, camera video stream signal, and dry contact switch signal. At least two of the signal sources are connected to the signal modulation unit.

3. The elevator power transmission system as described in claim 1, characterized in that, The power transmission module also includes an error correction coding module and an adaptive equalization module for suppressing electromagnetic interference in the elevator shaft and compensating for signal attenuation.

4. The elevator power transmission system as described in claim 1, characterized in that, The associated enclosure includes a shielded metal shell and a magnetic ring filter, with the magnetic ring filter fitted at the port where the power line enters the shielded metal shell.

5. The elevator power transmission system as described in claim 1, characterized in that, The voltage rating of the power supply line is AC220V or DC24V.

6. The elevator power transmission system as described in claim 1, characterized in that, The associated equipment box is deployed in the car top maintenance box, landing call box, or pit equipment box and connected to the local interface of the terminal equipment to restore the demodulated signal.

7. An elevator, characterized in that, Including the power transmission system for elevators as described in any one of claims 1 to 6.

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