Intelligent cable with adjustable cable core gears and application method thereof

Abstract

The invention discloses an intelligent cable with adjustable cable core gears and an application method of the intelligent cable. The intelligent cable comprises a cable body and a gear adjusting device. One end of the cable is connected with the power supply end, and the other end of the cable is connected with the power utilization end; power transmission from the power supply end to the power utilization end is realized through the cable; the gear adjusting device is embedded in the cable close to the power supply end; and the gear adjusting device is used for detecting the temperature in the cable core and adjusting the gear of the cable core in the cable according to the detected temperature. The wire core gears comprise the zero gear, the first gear, the second gear and the third gear. The three branch cables of the same size are arranged in the cable, and the three branch cables are powered on and off according to the preset temperature threshold value, so that the universality of the cable can be improved, the labor cost and the operation cost are reduced, and safety accidents and resource waste caused by overheating are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent cables, and in particular to an intelligent cable with adjustable core position and an application method thereof. Background Art

[0002] At present, with the rapid development of modern science and technology and industry, power transmission plays a vital role in various fields. As the key carrier of power transmission, the optimization of the performance and function of cables has become an urgent problem to be solved.

[0003] Traditional cables usually use a fixed copper core design, which means that the cables can only work effectively within a specific and fixed power range. In actual application scenarios, this limitation becomes increasingly prominent.

[0004] On the one hand, the market environment is becoming increasingly diversified, and many complex power usage scenarios require cables to operate stably in a variety of power environments. For example, in some industrial plants, the power consumption of different production stages or different equipment varies greatly; in commercial complexes, there are various types of merchants, and the power requirements during peak and trough periods are also very different.

[0005] On the other hand, traditional cables cannot automatically adjust according to actual power requirements. When the power consumption increases significantly, high-power cables must be manually replaced to avoid cable overload and heating, which may lead to safety accidents. On the contrary, when the power consumption decreases significantly, low-power cables must be manually replaced, otherwise it will cause waste of resources and unnecessary cost increase.

[0006] Therefore, this manual cable replacement method is not only cumbersome and inefficient, but may also lead to problems such as production interruption and unstable power supply due to untimely operation.

[0007] At the same time, with energy becoming increasingly scarce, the use of high-power cables in low-power electricity demand scenarios will also lead to inefficient use of energy, which is not in line with the development trend of energy conservation and emission reduction. Therefore, it is imperative to develop an intelligent cable with adjustable core position to meet the changing power requirements, improve power transmission efficiency and reduce resource waste. Summary of the invention

[0008] In response to the above technical problems, the present invention proposes an intelligent cable with adjustable core position and an application method thereof, which can improve the versatility of the cable, reduce labor costs and operating costs, and avoid safety accidents and waste of resources due to overheating.

[0009] The technical solution used in the present invention is: an intelligent cable with adjustable wire core gear position, comprising a cable and a gear position adjustment device; one end of the cable is connected to a power supply end, and the other end of the cable is connected to a power consumption end; through the cable, power is transmitted from the power supply end to the power consumption end; the gear position adjustment device is embedded in the cable close to the power supply end; the gear position adjustment device is used to detect the temperature inside the wire core, and adjust the wire core gear position inside the cable according to the detected temperature.

[0010] Furthermore, the core gears include a zeroth gear, a first gear, a second gear and a third gear.

[0011] Furthermore, the cable also includes a first branch cable L1, a second branch cable L2, a third branch cable L3, a ground wire E, a power supply end cable, a power consumption end cable and a polyvinyl chloride shell; the power supply end cable is arranged on the left side of the cable, connected to the first end of the first branch cable L1, the first end of the second branch cable L2 and the first end of the third branch cable L3, and embedded in the gear adjustment device; the power consumption end cable is arranged on the right side of the cable, connected to the second end of the first branch cable L1, the second end of the second branch cable L2 and the second end of the third branch cable L3.

[0012] Furthermore, the core cross-sectional area of ​​the power supply end cable is equal to the core cross-sectional area of ​​the power consumption end cable; the core cross-sectional area of ​​the first branch cable L1, the core cross-sectional area of ​​the second branch cable L2 and the core cross-sectional area of ​​the third branch cable L3 are one third of the core cross-sectional area of ​​the power supply end cable 105 or the power consumption end cable.

[0013] Furthermore, the first branch cable L1, the second branch cable L2, the third branch cable L3, the ground wire E, the power supply end cable and the power consumption end cable are all composed of a wire core and an insulating casing.

[0014] Furthermore, the first branch cable L1, the second branch cable L2 and the third branch cable L3 include mutually entangled and mutually non-entangled modes in the cables.

[0015] Furthermore, the gear adjustment device further includes a first IGBT, a second IGBT, a third IGBT, a main control unit, a temperature detection unit and a display unit; the first IGBT is arranged on the insulating shell of the first branch cable L1, the first end pin and the second end pin of the first IGBT are connected to the wire core of the first branch cable L1, the wire core between the first end pin and the second end pin of the first IGBT is disconnected, and the gate pin of the first IGBT is connected to the main control unit; the second IGBT is arranged on the insulating shell of the second branch cable L2, the first end pin and the second end pin of the second IGBT are connected to the wire core of the first branch cable L1, the wire core between the first end pin and the second end pin of the first IGBT is disconnected, and the gate pin of the first IGBT is connected to the main control unit; The core of the second branch cable L2 is connected, the core of the first end pin and the second end pin of the second IGBT is disconnected, and the gate pin of the second IGBT is connected to the main control unit; the third IGBT is arranged on the insulating shell of the third branch cable L3, the first end pin and the second end pin of the third IGBT are connected to the core of the third branch cable L3, the core of the first end pin and the second end pin of the third IGBT is disconnected, and the gate pin of the third IGBT is connected to the main control unit; the temperature detection unit is arranged on the insulating shells of the first branch cable L1, the second branch cable L2 and the third branch cable L3, and is used to detect the internal temperature of the cables; the display unit is arranged on the surface of the first IGBT, the second IGBT, the third IGBT, the main control unit and the temperature detection unit, and is used to display the current gear status information; the gear status information includes the current real-time temperature of the cable, the use status of the first branch cable L1, the second branch cable L2 and the third branch cable L3; the use status includes power-on state, idle state and damaged state.

[0016] Further, the zeroth gear position means that the main control unit controls the first IGBT, the second IGBT and the third IGBT to be turned off at the same time; the first gear position means that the main control unit controls any two of the first IGBT, the second IGBT and the third IGBT to be turned on at the same time; the second gear position means that the main control unit controls any one of the first IGBT, the second IGBT and the third IGBT to be turned on; the third gear position means that the main control unit controls the first IGBT, the second IGBT and the third IGBT to be turned on at the same time.

[0017] A method for automatically adjusting the position of a wire core is applied to an intelligent cable with adjustable position of the wire core, comprising the following steps: Step S110, the cable is powered on, so that the first branch cable L1, the second branch cable L2 and the third branch cable L3 are powered on at the same time; Step S210, the temperature sensor detects the temperature inside the current cable; Step S310, judging whether the temperature inside the current cable is lower than a threshold value T1, if so, proceeding to step S410, if not, proceeding to step S910; Step S410, disconnecting the power supply of the third branch cable L3, keeping the power supply of the first branch cable L1 and the second branch cable L2; Step S510, judging whether the temperature inside the current cable is lower than the threshold value T1, if If yes, go to step S610, if not, go to step S110; in step S610, disconnect the power of the second branch cable L2 and keep the power of the first branch cable L1; in step S710, determine whether the temperature inside the current cable is lower than the threshold value T1, if so, go to step S810, if not, go to step S410; in step S810, continue to keep the first branch cable L1 powered; in step S910, determine whether the temperature inside the current cable is higher than the threshold value T2, if so, go to step S1010, if not, go to step S110; in step S1010, the cable is powered off, so that the first branch cable L1, the second branch cable L2 and the third branch cable L3 are powered off at the same time.

[0018] A method for automatically adjusting the position of a wire core is applied to an intelligent cable with adjustable wire core position, comprising the following steps: Step S120, the cable is powered on, so that the first branch cable L1 is powered on; Step S220, the temperature sensor detects the temperature inside the current cable; Step S320, judge whether the temperature inside the current cable is higher than the threshold value T2, if so, enter step S420, if not, enter step S120; Step S420, the first branch cable L1 and the second branch cable L2 are powered on at the same time; Step S520, judge whether the temperature inside the current cable is higher than the threshold value T2, if so, enter step S620, if not, enter step S420; Step S620, the first branch cable L1, the second branch cable L2 and the third branch cable L3 are powered on at the same time; Step S720, judge whether the temperature inside the current cable is higher than the threshold value T2, if so, enter step S820, if not, enter step S620; Step S820, the cable is powered off, so that the first branch cable L1, the second branch cable L2 and the third branch cable L3 are powered off at the same time.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting three branch cables of the same size and material inside the cable, and assisting the gear adjustment module to control the on-off of the cable, the temperature sensor of the gear adjustment module is used for temperature detection, the internal temperature of the current cable is obtained in real time, and the three branch cables are turned on and off according to the preset temperature threshold. Therefore, (1) the versatility of the cable is greatly improved, and the trouble of frequent replacement of cables due to power mismatch is reduced; (2) the cable is effectively prevented from overloading and heating due to excessive power consumption, the possibility of safety accidents such as fire is reduced, and the safety of personnel and property is guaranteed; (3) the excessive use of high-power cables under low power demand is avoided, resource waste is reduced, and the cable procurement cost and storage cost are reduced; (4) the labor cost caused by cable replacement and the indirect cost caused by production and operation interruption are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The figure is an overall structural diagram of a smart cable with adjustable gear position according to the present invention.

[0021] Figure 2 The figure is an internal cross-sectional view of a branch cable in an intelligent cable of the present invention.

[0022] Figure 3 It is an internal cross-sectional view of a branch cable in another intelligent cable of the present invention.

[0023] Figure 4 The present invention is a cross-sectional view of the internal structure of a gear adjustment device.

[0024] Figure 5 The present invention is a direct view of the appearance of a gear adjustment device.

[0025] Figure 6 This is a diagram showing the connection relationship between the IGBT and the branch cable of the present invention.

[0026] Figure 7 This is a functional principle diagram of the gear adjustment device of the present invention on the cable.

[0027] Figure 8 It is a front view of the appearance of the display unit of the present invention.

[0028] Fig. 9 This is a flow chart of a method for automatically adjusting the wire core position of the present invention. Fig.10 This is a flow chart of another method for automatically adjusting the wire core position of the present invention.

[0029] Figure markings: Example: 100-cable; 200-gear adjustment device; 101-first branch cable L1; 102-second branch cable L2; 103-third branch cable L3; 104-ground wire E; 105-power supply end cable; 106-power consumption end cable; 110-polyvinyl chloride shell; 201-first IGBT; 202-second IGBT; 203-third IGBT; 204-main control unit; 205-temperature detection unit; 206-display unit. DETAILED DESCRIPTION

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0034] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention. The present invention will be specifically described below in conjunction with the accompanying drawings: An intelligent cable with adjustable core position, such as Figure 1 As shown, it includes a cable 100 and a gear adjustment device 200 .

[0035] One end of the cable 100 is connected to the power supply end, and the other end of the cable 100 is connected to the power consumption end.

[0036] The cable 100 is used to transmit power from the power supply end to the power consumption end.

[0037] It can be understood that the power supply end refers to the output source of electric energy in a circuit or power supply system, which is what we understand in daily life, including the end where the power grid enters the household distribution box after the voltage is reduced by the power transformer. After the electricity is generated from the power plant, it is transmitted after the voltage is stepped up. When it reaches the vicinity of the user, it is reduced by the transformer, and then the electric energy is transmitted to the starting point of the power supply line of each household user. For example, the socket on the wall of our home is connected to the power supply line behind it. The live wire and the neutral wire on the socket introduce AC power into various electrical equipment to provide power for the normal operation of the electrical equipment. In an industrial environment, the power supply end of large three-phase AC motors and other equipment is the three-phase AC power line output from the factory's substation. These lines provide power sources for high-power equipment such as motors.

[0038] The gear adjustment device 200 is embedded in the cable 100 near the power supply end.

[0039] The gear position adjusting device 200 is used to detect the temperature inside the cable 100 and adjust the wire core gear position inside the cable 100 according to the detected temperature.

[0040] The core gear positions include a zeroth gear position, a first gear position, a second gear position and a third gear position.

[0041] It is understandable that when the internal temperature of the cable detected by the gear adjustment device 200 is within the preset range, it means that the current passing through the cable is small, and the wire core of the first gear is used; when the temperature exceeds the preset range, when the current passing through the cable is large, the wire core of the second gear is used; when the temperature still exceeds the preset range when the second gear is used, the wire core of the third gear is used; when the temperature still exceeds the preset range when the third gear is used, the wire core of the zeroth gear is used. Using the zeroth gear means that the electrical connection of the cable is disconnected by the gear adjustment device 200.

[0042] like Figure 2 and Figure 3 As shown, the cable 100 further includes a first branch cable L1 101, a second branch cable L2 102, a third branch cable L3 103, a ground wire E 104, a power supply end cable 105 ( Figure 2 Not shown, refer to Figure 4 ), an electrical end cable 106 and a polyvinyl chloride casing 110.

[0043] The power supply cable 105 is disposed on the left side of the cable 100 , connected to the first end of the first branch cable L1 101 , the first end of the second branch cable L2 102 , and the first end of the third branch cable L3 103 , and embedded in the gear adjustment device 200 .

[0044] The power-using end cable 106 is disposed on the right side of the cable 100 , and is connected to the second end of the first branch cable L1 101 , the second end of the second branch cable L2 102 , and the second end of the third branch cable L3 103 .

[0045] It can be understood that the left side of the cable 100 is close to the power supply end, and the right side of the cable 100 is close to the power consumption end.

[0046] The cross-sectional area of ​​the core of the power supply end cable 105 is equal to the cross-sectional area of ​​the core of the power consumption end cable 106 .

[0047] The core cross-sectional areas of the first branch cable L1 101 , the second branch cable L2 102 and the third branch cable L3 103 are one third of the core cross-sectional area of ​​the power supply cable 105 .

[0048] It should be noted that the first branch cable L1 101, the second branch cable L2 102, the third branch cable L3 103, the ground wire E 104, the power supply end cable 105 and the power consumption end cable 106 are all composed of a wire core and an insulating shell.

[0049] It is understandable that when the internal temperature of the cable detected by the gear adjustment device 200 is within the preset range, it means that when the current passing through the cable 100 is small, the wire core of the first gear is used, that is, any one of the three branch cables is used; when the temperature exceeds the preset range, when the current passing through the cable is large, the wire core of the second gear is used, that is, any two of the three branch cables are used; when the temperature still exceeds the preset range when the second gear is used, the wire core of the third gear is used, that is, all of the three branch cables are used; when the temperature still exceeds the preset range when the third gear is used, the wire core of the zeroth gear is used. Using the zeroth gear means disconnecting the power connection of the cable 100 through the gear adjustment device 200.

[0050] It is understandable that the power supply cable 105 is responsible for obtaining electrical energy from the power supply, and its interface with the power supply may have specific specifications and protective measures to adapt to different power supply types (such as AC power or DC power). The power consumption cable 106 transmits electrical energy to the power consumption device or circuit, and its connection with the power consumption device should also ensure good conductivity and stability, for example, it may adopt a specific plug or socket form to prevent looseness and poor contact.

[0051] It is understandable that the wire core can be made of metal materials with good conductivity, such as copper and aluminum, according to the actual power demand. Copper core wire has high conductivity and good flexibility, is suitable for long-term use and is not easy to break; aluminum core wire is relatively low in cost, but its conductivity is slightly inferior to copper core wire. It can be used in some scenarios that are more cost-sensitive and do not require extremely high conductivity. Therefore, the thickness and material selection of the wire core depends on the current and voltage level that the cable needs to carry.

[0052] It should be noted that the first branch cable L1 101 , the second branch cable L2 102 and the third branch cable L3 103 in the cable 100 include mutually entangled and mutually non-entangled modes.

[0053] It is understandable that, in addition to the above-mentioned cable connection relationship, each cable may be laid out in layers or zones inside the polyvinyl chloride shell 110. For example, the ground wire E 104 may be laid out in a relatively independent area to reduce the possibility of electromagnetic interference from other cables.

[0054] like Figure 4 As shown, the gear adjustment device 200 further includes a first IGBT 201, a second IGBT 202, a third IGBT 203, a main control unit 204, a temperature detection unit 205 and a display unit 206 ( Figure 4 Not shown, Figure 5 Supplementary Figure).

[0055] The first IGBT 201 is arranged on the insulating shell of the first branch cable L1 101, the first end pin and the second end pin of the first IGBT 201 are connected to the core of the first branch cable L1 101, the core between the first end pin and the second end pin of the first IGBT 201 is disconnected, and the gate pin of the first IGBT 201 is connected to the main control unit 204.

[0056] The second IGBT 202 is arranged on the insulating shell of the second branch cable L2 102, the first end pin and the second end pin of the second IGBT 202 are connected to the core of the second branch cable L2 102, the first end pin and the second end pin of the second IGBT 202 are disconnected from the core, and the gate pin of the second IGBT 202 is connected to the main control unit 204.

[0057] The third IGBT 203 is arranged on the insulating shell of the third branch cable L3 103, the first end pin and the second end pin of the third IGBT 203 are connected to the core of the third branch cable L3 103, the first end pin and the second end pin of the third IGBT 203 are disconnected from the core, and the gate pin of the third IGBT 203 is connected to the main control unit 204.

[0058] The main control unit 204 is an MCU chip.

[0059] The temperature detection unit 205 is a temperature sensor.

[0060] It is understandable that if Figure 6 As shown, the connection relationship between the first end pin and the second section pin of the first IGBT 201 and the first branch cable L1 101 is shown in detail; the connection relationship between the first end pin and the second section pin of the second IGBT 202 and the second branch cable L2 102 is shown in detail; the connection relationship between the first end pin and the second section pin of the third IGBT 203 and the third branch cable L3 103 is shown in detail.

[0061] It is understandable that if Figure 6 As shown, the first end pin and the second section pin of the first IGBT 201 are grafted onto the wire core of the first branch cable L1 101, and the wire core between the first end pin and the second section pin of the first IGBT 201 is disconnected, that is, the current flowing from the power supply end sequentially passes through the first end pin and the PN junction of the first IGBT 201 to the second end pin. Similarly, the second IGBT 202 and the third IGBT 203 are explained in this way.

[0062] The temperature detection unit 205 is disposed on the insulating housings of the first branch cable L1 101 , the second branch cable L2 102 , and the third branch cable L3 103 , and is used to detect the internal temperature of the cable 100 .

[0063] The display unit 206 is disposed on the surfaces of the first IGBT 201 , the second IGBT 202 , the third IGBT 203 , the main control unit 204 and the temperature detection unit 205 , and is used to display current gear status information.

[0064] like Figure 8 As shown, the gear status information includes the current real-time temperature of the cable 100 , and the use status of the first branch cable L1 101 , the second branch cable L2 102 , and the third branch cable L3 103 .

[0065] The use state includes a power-on state, an idle state, and a damaged state.

[0066] The back of the gear adjustment device 200 further includes a polyvinyl chloride shell 110 which is the same as the cable 100 and is used to wrap the exposed back area of ​​the gear adjustment device 200 .

[0067] It is understandable that the first IGBT, the second IGBT and the third IGBT have the characteristics of low on-resistance, high switching speed and good thermal stability, and can be selected according to the rated current, voltage and power of the cable. For example, in cables with high power transmission, IGBT modules with higher withstand voltage and larger current capacity are selected to ensure stable operation during long-term operation and avoid damage due to overcurrent or overvoltage.

[0068] It is understandable that the first IGBT, the second IGBT and the third IGBT may be of N-type or P-type IGBT type. For example, if an N-channel IGBT is used, the first end pin of the IGBT is the collector, and the second end pin of the IGBT is the emitter; if a P-channel IGBT is used, the first end pin of the IGBT is the emitter, and the second end pin of the IGBT is the collector.

[0069] The zeroth gear position means that the main control unit 204 controls the first IGBT 201, the second IGBT 202 and the third IGBT 203 to be turned off at the same time.

[0070] The first gear position means that the main control unit 204 controls any two IGBTs among the first IGBT 201, the second IGBT 202 and the third IGBT 203 to be turned on at the same time.

[0071] The second gear position means that the main control unit 204 controls any one of the first IGBT 201, the second IGBT 202 and the third IGBT 203 to be turned on.

[0072] The third gear position means that the main control unit 204 controls the first IGBT 201, the second IGBT 202 and the third IGBT 203 to be turned on at the same time.

[0073] It is understandable that if Figure 7 As shown, a functional schematic diagram of the gear adjustment device 200 on the cable is shown. The main control unit 204, as the control core of the entire system, can control the on and off of the first IGBT, the second IGBT and the third IGBT according to preset conditions (the temperature of the temperature detection unit 205).

[0074] It is understandable that if Figure 7 As shown, for example, the main control unit 204 may have a built-in temperature threshold setting function. When the temperature detected by the temperature detection unit 205 exceeds a certain set value, the main control unit 204 will adjust the switching state of the IGBT accordingly to achieve effective control of the cable temperature. For example, the preset temperature threshold is 60°C. When the temperature detected by the temperature sensor is lower than 60°C, it means that the current passing through the cable is small. The first gear wire core is used, and the main control unit 204 can control any IGBT of the first IGBT 201, the second IGBT 202 and the third IGBT 203 to be turned on, that is, any one of the three branch cables is used; when the temperature exceeds the preset 60°C and the current passing through the cable is large, the second gear wire core is used, and the main control unit 204 can control any two IGBTs of the first IGBT 201, the second IGBT 202 and the third IGBT 203 to be turned on, that is, any two of the three branch cables are used; when the second gear is used, if the temperature still exceeds the preset 60°C, the third gear wire core is used, and the main control unit 204 can control the first IGBT 201, the second IGBT 202 and the third IGBT 203 are all turned on, that is, all the branch cables in the three branch cables are used; when the temperature still exceeds the preset 60°C when the third gear is used, the wire core in the zeroth gear is used. When the zeroth gear is used, that is, the main control unit 204 can control the first IGBT 201, the second IGBT 202 and the third IGBT 203 to be turned off, that is, all the branch cables in the three branch cables are used, and the power connection of the entire cable is disconnected. .

[0075] It is understandable that if Figure 7As shown, for another example, the main control unit 204 may have a built-in temperature threshold setting function. When the temperature detected by the temperature detection unit 205 is lower than a certain set value, the main control unit 204 will adjust the switching state of the IGBT accordingly to achieve effective control of the cable temperature. For example, the preset temperature threshold is 50°C, and three branch cables are used at the same time. When the temperature detected by the temperature sensor is higher than 60°C, it means that the current passing through the cable is large, and the power connection of the three branch cables needs to be disconnected at the same time. The main control unit 204 can control the first IGBT 201, the second IGBT 202 and the third IGBT 203 to be disconnected; when the temperature detected by the temperature sensor is higher than 50°C but lower than 60°C, it means that the current passing through the cable is appropriate, and the three branch cables continue to be used at the same time. The main control unit 204 can continue to control the first IGBT 201, the second IGBT 202 and the third IGBT 203 to be turned on; when the temperature detected by the temperature sensor is lower than 50°C, it means that the current passing through the cable is small, and the wire core can be reduced by one gear, that is, any two of the three branch cables are used, and the main control unit 204 can control the first IGBT 201, the second IGBT 202 and the third IGBT Any two IGBTs of 203 are turned on; when two branch cables are used, when the temperature is still lower than the preset 50°C, it means that the current passing through the cable is small, and the wire core can be further lowered by one gear, that is, any one of the three branch cables is used, and the main control unit 204 can control any one of the first IGBT 201, the second IGBT 202 and the third IGBT 203 to be turned on.

[0076] It is understandable that if Figure 8 As shown, the display unit 206 can use a liquid crystal display (LCD) or a light emitting diode display (LED). When using a liquid crystal display, it can clearly display multiple lines of text information, including the temperature inside the current cable and the use status of each branch cable. The upper part of the display unit 206 displays the use status of the first branch cable L1 101, the second branch cable L2 102, and the third branch cable L3 103, and the lower part of the display unit 206 displays the real-time temperature data inside the current cable. For example, when the third branch cable L3 103 is in a damaged state, a red flashing icon can be displayed on the display to prompt the user. When using a light emitting diode display, the state can be indicated by a combination of LED lights of different colors. The use status can be distinguished by different display colors, including green for normal power-on state, yellow for idle state, and red for damaged state.

[0077] It is understandable that, in order to ensure the overall reliability during long-term operation, each component should be self-checked regularly. For example, the main control unit 204 can start the self-checking program, and check whether the switching function of the IGBT is normal by sending a specific test signal to the IGBT, and also check the working status of the temperature detection unit 205 and the display unit 206. If any component is found to be faulty, the main control unit 204 will also send the fault information to the display unit 206 for display, and can send an alarm signal to the external maintenance system through the communication interface so that maintenance personnel can perform maintenance and replacement in time.

[0078] It is understandable that the polyvinyl chloride shell 110 not only protects the exposed area on the back of the gear adjustment device 200, but also has certain fire prevention, moisture resistance and anti-aging properties. In the design of the shell, heat dissipation holes or heat dissipation fins and other structures are added according to actual needs, so that while ensuring the protective performance, the heat generated during the operation of the cable can be effectively dissipated, further improving the stability and safety of the entire device. In terms of installation, the shell is designed with a structure that is easy to disassemble and install, so that when performing equipment maintenance and overhaul, maintenance personnel can easily open the shell and operate the internal components.

[0079] Based on the technical solution, an intelligent cable with adjustable core position is provided, and two automatic adjustment methods applied to the intelligent cable are proposed.

[0080] Application method 1 A method for automatically adjusting the position of a wire core is applied to an intelligent cable with adjustable wire core position, see Fig. 9 As shown, the method for automatically adjusting the wire core position comprises the following steps: Step S110 : energizing the cables, so that the first branch cable L1 , the second branch cable L2 , and the third branch cable L3 are energized at the same time.

[0081] In this step, after the cable is connected to the circuit, the current flows into the power supply end cable 105, passes through the first end of the first branch cable L1 101 connected to it, the first end of the second branch cable L2 and the first end of the third branch cable L3 103, and then passes through each branch cable respectively, and finally flows out from the second end of each branch cable, and reaches the power consumption end through the power consumption end cable 106.

[0082] Step S210: The temperature sensor detects the current temperature inside the cable.

[0083] In this step, the temperature detection unit is set on the insulating shell of the first branch cable L1, the second branch cable L2 and the third branch cable L3, and senses the temperature inside the cable through the temperature sensor inside. The temperature sensor converts the temperature signal into an electrical signal and transmits the electrical signal to the main control unit so that the main control unit can perform subsequent gear adjustment operations according to the temperature conditions.

[0084] Step S310, determining whether the current temperature inside the cable is lower than a threshold value T1, if yes, proceeding to step S410, if no, proceeding to step S910.

[0085] In this step, after the main control unit receives the temperature signal transmitted by the temperature detection unit, it compares it with the preset temperature threshold T1. If the temperature is lower than the threshold T1 (assuming T1 is 50°C), it means that the current passing through the cable is small and the wire core position needs to be reduced to meet the power demand; if the temperature is not lower than the threshold T1, it means that the current temperature of the cable is high and the current position needs to be maintained.

[0086] It can be understood that the threshold temperature T1 is a safe temperature of the cable. If the temperature is lower than the threshold temperature T1, it means that the cable core utilization rate is not high, and the requirement for the cross-sectional area of ​​the core can be further reduced.

[0087] Step S410: disconnect the third branch cable L3 from being energized, and keep the first branch cable L1 and the second branch cable L2 energized.

[0088] In this step, the main control unit controls the third IGBT to be cut off according to the judgment result, so that the core of the third branch cable L3 is disconnected, and the current cannot pass through the third branch cable L3, while the first IGBT and the second IGBT remain in the on state, and the first branch cable L1 and the second branch cable L2 continue to be energized, thereby realizing the adjustment of the core gear position.

[0089] It can be understood that, for example, when the temperature detected by the temperature sensor is lower than the threshold value T1 of 50°C, it means that the current passing through the cable is small, and the wire core can be lowered by one gear, that is, using any two of the three branch cables, the main control unit can control the first IGBT and the second IGBT to be turned on, and control the third IGBT to be turned off.

[0090] Step S510, determining whether the current temperature inside the cable is lower than a threshold value T1, if yes, proceeding to step S610, if no, proceeding to step S110.

[0091] In this step, the temperature detection unit continues to detect the internal temperature of the cable and transmits the signal to the main control unit, which compares it with the threshold value T1 again. If the temperature is still lower than the threshold value T1, it means that the power demand of the cable has further decreased, and the core position needs to be further adjusted; if the temperature is not lower than the threshold value T1, it means that the power demand of the cable has increased, and it needs to be restored to the previous position or further increased, so return to step S110 to re-judge.

[0092] Step S610: disconnect the power supply to the second branch cable L2 and keep the power supply to the first branch cable L1.

[0093] In this step, the main control unit controls the second IGBT to be turned off, so that the core of the second branch cable L2 is disconnected. At this time, only the first branch cable L1 is powered, which further reduces the core position to better adapt to lower power requirements.

[0094] It can be understood that when using two branch cables, when the temperature is still lower than the preset threshold value T1 of 50°C, it means that the current passing through the cable is small, and the wire core can be further lowered by one level, that is, using any one of the three branch cables, the main control unit can control the first IGBT to turn on and control the second IGBT and the third IGBT to turn off.

[0095] Step S710, determining whether the current temperature inside the cable is lower than the threshold value T1, if yes, proceeding to step S810, if no, proceeding to step S410.

[0096] In this step, the internal temperature of the cable is detected again and compared with the threshold value T1. If the temperature is lower than the threshold value T1, it means that the current power transmission demand of the cable is far lower than the heat dissipation requirement of the core, that is, the power supply of a branch cable is also lower than the safe temperature of the cable, so the current gear is appropriate, and the state is continued in step S810; if the temperature is not lower than the threshold value T1, it means that the power demand has increased, and it is necessary to restore to the state when the third branch cable L3 was disconnected before, that is, to step S410.

[0097] Step S810, continue to keep the first branch cable L1 powered on.

[0098] In this step, the main control unit keeps the first IGBT turned on to ensure that the first branch cable L1 is continuously powered to meet the current lower power demand.

[0099] Step S910, determining whether the current temperature inside the cable is higher than a threshold value T2, if yes, proceeding to step S1010, if no, proceeding to step S110.

[0100] In this step, the main control unit compares the received temperature signal with the preset threshold value T2. If the temperature is higher than the threshold value T2, it means that the current passing through the cable is too large, which may cause the cable to overheat. Measures need to be taken to reduce the cable temperature to ensure the safety of equipment and personnel, that is, enter step S1010 to cut off the power; if the temperature is not higher than the threshold value T2, it means that the current temperature of the cable is within a reasonable range, and the current state continues to be maintained, that is, return to step S110 to re-judge the temperature situation.

[0101] It can be understood that the threshold temperature T2 is a dangerous temperature of the cable. If the temperature is higher than the threshold temperature T2, it means that the cable core usage is overloaded, which can further increase the requirement for the core cross-sectional area.

[0102] Step S1010: The cables are powered off, so that the first branch cable L1, the second branch cable L2 and the third branch cable L3 are powered off simultaneously.

[0103] In this step, the main control unit controls the first IGBT, the second IGBT and the third IGBT to be turned off simultaneously, so that the cores of the three branch cables are disconnected and the current cannot pass through the cables, thereby achieving power failure of the cables to avoid damage to the cables due to overheating.

[0104] It is understandable that the control unit can have a built-in temperature threshold setting function. When the temperature detected by the temperature detection unit is lower than a certain set value, the main control unit will adjust the switch state of the IGBT accordingly to achieve effective control of the cable temperature. For example, the preset temperature threshold T1 is 50°C, and three branch cables are used at the same time. When the temperature detected by the temperature sensor is higher than the threshold temperature T of 60°C, it means that the current passing through the cable is large, and the power connection of the three branch cables needs to be disconnected at the same time. The main control unit can control the first IGBT, the second IGBT and the third IGBT to be disconnected.

[0105] Application method 2 A method for automatically adjusting the position of a wire core is applied to an intelligent cable with adjustable wire core position, see Fig.10 As shown, the method for automatically adjusting the wire core position comprises the following steps: Step S120: energize the cables, so that the first branch cable L1 is energized.

[0106] In this step, after the cable is connected to the circuit, current flows in from the power supply end cable 105, passes through the first end of the first branch cable L1 connected to it, then passes through the first branch cable L1, and finally flows out from the second end of the first branch cable L1, passes through the power consumption end cable 106 to reach the power consumption end.

[0107] It can be understood that the preset temperature threshold T2 is 60°C. When the temperature detected by the temperature sensor is lower than 60°C, it means that the current passing through the cable is small. Using the first gear wire core, the main control unit can control the first IGBT to turn on, and the second IGBT and the third IGBT to turn off, that is, use the first branch cable L1 of the three branch cables.

[0108] Step S220: The temperature sensor detects the current temperature inside the cable.

[0109] In this step, the temperature detection unit is set on the insulating shell of the first branch cable L1, the second branch cable L2 and the third branch cable L3, and senses the temperature inside the cable through the temperature sensor inside. The temperature sensor converts the temperature signal into an electrical signal and transmits the electrical signal to the main control unit so that the main control unit can perform subsequent gear adjustment operations according to the temperature conditions.

[0110] It is understandable that the main control unit may have a built-in temperature threshold setting function. When the temperature detected by the temperature detection unit exceeds a certain set value, the main control unit will adjust the switching state of the IGBT accordingly to achieve effective control of the cable temperature.

[0111] Step S320, determining whether the current temperature inside the cable is higher than a threshold value T2, if yes, proceeding to step S420, if no, proceeding to step S120.

[0112] In this step, after the main control unit receives the temperature signal transmitted by the temperature detection unit, it compares it with the preset threshold value T2. If the temperature is higher than the threshold value T2 (assuming T2 is 60°C), it means that the current passing through the cable is large, which may cause the cable to overheat, and it is necessary to increase the wire core gear to meet the power demand; if the temperature is not higher than the threshold value T2, it means that the current temperature of the cable is within a reasonable range, and the current gear is maintained, that is, enter step S120 to re-judge the temperature situation.

[0113] It can be understood that the threshold temperature T2 is a dangerous temperature of the cable. If the temperature is higher than the threshold temperature T2, it means that the cable core usage is overloaded, which can further increase the requirement for the core cross-sectional area.

[0114] Step S420: energize the first branch cable L1 and the second branch cable L2 simultaneously.

[0115] In this step, the main control unit controls the second IGBT to turn on according to the judgment result, so that the core of the second branch cable L2 is connected. At this time, the first branch cable L1 and the second branch cable L2 are powered on at the same time, increasing the cross-sectional area of ​​the core to meet the greater power demand.

[0116] It can be understood that when the temperature exceeds the preset threshold temperature T2 of 60°C and the current passing through the cable is large, the main control unit can control the first IGBT and the second IGBT to be turned on and the third IGBT to be turned off by using the second gear wire core, that is, using the first branch cable L1 and the second branch cable L2 of the three branch cables.

[0117] Step S520, determining whether the current temperature inside the cable is higher than a threshold value T2, if yes, proceeding to step S620, if no, proceeding to step S420.

[0118] In this step, the temperature detection unit continues to detect the internal temperature of the cable and transmits the signal to the main control unit, which compares it with the threshold value T2 again. If the temperature is still higher than the threshold value T2, it means that the power demand of the cable has further increased and it is necessary to continue to increase the core gear; if the temperature is not higher than the threshold value T2, it means that the power demand of the cable is within a reasonable range and the current gear is maintained, that is, step S420 is entered to re-judge the temperature situation.

[0119] Step S620: energize the first branch cable L1, the second branch cable L2, and the third branch cable L3 simultaneously.

[0120] In this step, the main control unit controls the third IGBT to turn on according to the judgment result, so that the core of the third branch cable L3 is connected. At this time, the first branch cable L1, the second branch cable L2 and the third branch cable L3 are energized at the same time, further increasing the cross-sectional area of ​​the core to adapt to greater power requirements.

[0121] It can be understood that when using the second gear, when the temperature still exceeds the preset threshold temperature T2 of 60°C, the wire core of the third gear is used, and the main control unit can control the first IGBT, the second IGBT and the third IGBT to be turned on, that is, all the branch cables in the three branch cables are used.

[0122] Step S720, determine whether the current temperature inside the cable is higher than the threshold T2, if yes, proceed to step S820, if no, proceed to step S620.

[0123] In this step, the temperature detection unit continues to detect the internal temperature of the cable and transmits the signal to the main control unit, which compares it with the threshold value T2 again. If the temperature is still higher than the threshold value T2, it means that the power demand of the cable continues to increase and exceeds the tolerance range of the current core, and special measures need to be taken (such as issuing an alarm and considering whether the cable is faulty); if the temperature is not higher than the threshold value T2, it means that the power demand of the cable can be met under the current core configuration, and the current gear is maintained, that is, entering step S620 to re-judge the temperature situation.

[0124] Step S820: The cables are powered off, so that the first branch cable L1, the second branch cable L2 and the third branch cable L3 are powered off simultaneously.

[0125] In this step, the main control unit controls the first IGBT, the second IGBT and the third IGBT to be cut off at the same time, so that the cores of the three branch cables are disconnected and the current cannot pass through the cables, thereby achieving cable power off. This step will be executed when the following two situations occur: First, the cable temperature is too high and the temperature cannot be effectively controlled after multiple gear adjustments. It may be caused by a fault in the cable itself or an abnormal external environment. The power is cut off at this time to prevent the cable from damaging the equipment or causing a safety accident due to overheating; second, when the main control unit receives an external power-off command (such as an emergency power-off signal from the power system or a power-off operation manually triggered by the user), it will execute a power-off operation to ensure system safety.

[0126] It can be understood that when the temperature still exceeds the preset threshold temperature T2 of 60°C when the third gear is used, the wire core of the zeroth gear is used. When the zeroth gear is used, that is, the main control unit can control the first IGBT, the second IGBT and the third IGBT to be disconnected, that is, all the branch cables in the three branch cables are used, and the power connection of the entire cable is disconnected.

[0127] Those skilled in the art will appreciate that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present application. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario can be distributed in the devices of the implementation scenario according to the description of the implementation scenario, or can be changed accordingly and located in one or more devices different from the present implementation scenario. The modules of the above-mentioned implementation scenario can be combined into one module, or can be further split into multiple submodules.

[0128] The above serial numbers of this application are only for description and do not represent the advantages and disadvantages of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of this application, but this application is not limited to them, and any changes that can be thought of by technicians in this field should fall within the scope of protection of this application.

Claims

1. An intelligent cable with adjustable core position, characterized in that: It comprises a cable (100) and a gear adjustment device (200); One end of the cable (100) is connected to a power supply end, and the other end of the cable (100) is connected to a power consumption end; Power transmission from a power supply end to a power consumption end is achieved through the cable (100); The gear adjustment device (200) is embedded in the cable (100) close to the power supply end; The gear position adjustment device (200) is used to detect the temperature inside the cable (100), and adjust the wire core gear position inside the cable (100) according to the detected temperature.

2. The intelligent cable with adjustable core position according to claim 1, characterized in that: The core gear positions include a zeroth gear position, a first gear position, a second gear position and a third gear position.

3. The intelligent cable with adjustable core position according to claim 2, characterized in that: The cable (100) further comprises a first branch cable L1 (101), a second branch cable L2 (102), a third branch cable L3 (103), a ground wire E (104), a power supply end cable (105), a power consumption end cable (106) and a polyvinyl chloride casing (110); The power supply end cable (105) is arranged on the left side of the cable (100), connected to the first end of the first branch cable L1 (101), the first end of the second branch cable L2 (102) and the first end of the third branch cable L3 (103), and embedded in the gear adjustment device (200); The power-consuming end cable (106) is arranged on the right side of the cable (100) and is connected to the second end of the first branch cable L1 (101), the second end of the second branch cable L2 (102) and the second end of the third branch cable L3 (103).

4. The intelligent cable with adjustable core position according to claim 3, characterized in that: The cross-sectional area of ​​the wire core of the power supply end cable (105) is equal to the cross-sectional area of ​​the wire core of the power consumption end cable (106); The core cross-sectional area of ​​the first branch cable L1 (101), the core cross-sectional area of ​​the second branch cable L2 (102), and the core cross-sectional area of ​​the third branch cable L3 (103) are one third of the core cross-sectional area of ​​the power supply end cable (105) or the power consumption end cable (106).

5. The intelligent cable with adjustable core position according to claim 4, characterized in that: The first branch cable L1 (101), the second branch cable L2 (102), the third branch cable L3 (103), the ground wire E (104), the power supply end cable (105) and the power consumption end cable (106) are all composed of a wire core and an insulating casing.

6. The intelligent cable with adjustable core position according to claim 5, characterized in that: The first branch cable L1 (101), the second branch cable L2 (102) and the third branch cable L3 (103) in the cable (100) include mutually entangled and mutually non-entangled modes.

7. The intelligent cable with adjustable core position according to claim 6, characterized in that: The gear adjustment device (200) further comprises a first IGBT (201), a second IGBT (202), a third IGBT (203), a main control unit (204), a temperature detection unit (205) and a display unit (206); The first IGBT (201) is arranged on the insulating housing of the first branch cable L1 (101), the first end pin and the second end pin of the first IGBT (201) are connected to the wire core of the first branch cable L1 (101), the wire core between the first end pin and the second end pin of the first IGBT (201) is disconnected, and the gate pin of the first IGBT (201) is connected to the main control unit (204); The second IGBT (202) is arranged on the insulating housing of the second branch cable L2 (102), the first end pin and the second end pin of the second IGBT (202) are connected to the core of the second branch cable L2 (102), the first end pin and the second end pin of the second IGBT (202) are disconnected from the core, and the gate pin of the second IGBT (202) is connected to the main control unit (204); The third IGBT (203) is arranged on the insulating housing of the third branch cable L3 (103), the first end pin and the second end pin of the third IGBT (203) are connected to the wire core of the third branch cable L3 (103), the wire core of the first end pin and the second end pin of the third IGBT (203) are disconnected, and the gate pin of the third IGBT (203) is connected to the main control unit (204); The temperature detection unit (205) is arranged on the insulating casings of the first branch cable L1 (101), the second branch cable L2 (102) and the third branch cable L3 (103), and is used to detect the internal temperature of the cables (100); The display unit (206) is arranged on the surfaces of the first IGBT (201), the second IGBT (202), the third IGBT (203), the main control unit (204) and the temperature detection unit (205), and is used to display current gear status information; The gear status information includes the current real-time temperature of the cable (100), the use status of the first branch cable L1 (101), the second branch cable L2 (102) and the third branch cable L3 (103); The use state includes a power-on state, an idle state, and a damaged state.

8. The intelligent cable with adjustable core position according to claim 7, characterized in that: The zeroth gear position means that the main control unit (204) controls the first IGBT (201), the second IGBT (202) and the third IGBT (203) to be turned off simultaneously; The first gear position means that the main control unit (204) controls any two of the first IGBT (201), the second IGBT (202) and the third IGBT (203) to be turned on simultaneously; The second gear position means that the main control unit (204) controls any one of the first IGBT (201), the second IGBT (202) and the third IGBT (203) to be turned on; The third gear position means that the main control unit (204) controls the first IGBT (201), the second IGBT (202) and the third IGBT (203) to be turned on simultaneously.

9. A method for automatically adjusting the position of a wire core, applied to an intelligent cable with adjustable wire core position, characterized in that: The following steps are involved: Step S110, the cables are powered on, so that the first branch cable L1, the second branch cable L2 and the third branch cable L3 are powered on simultaneously; Step S210, the temperature sensor detects the current temperature inside the cable; Step S310, determining whether the current temperature inside the cable is lower than the threshold value T1, if yes, proceeding to step S410, if no, proceeding to step S910; Step S410, disconnecting the third branch cable L3 from being powered, and maintaining the first branch cable L1 and the second branch cable L2 from being powered; Step S510, determining whether the current temperature inside the cable is lower than the threshold value T1, if yes, proceeding to step S610, if no, proceeding to step S110; Step S610, disconnecting the second branch cable L2 from being powered, and keeping the first branch cable L1 powered; Step S710, determining whether the current temperature inside the cable is lower than the threshold value T1, if yes, proceeding to step S810, if no, proceeding to step S410; Step S810, continue to keep the first branch cable L1 powered on; Step S910, determining whether the current temperature inside the cable is higher than the threshold value T2, if yes, proceeding to step S1010, if no, proceeding to step S110; Step S1010: The cables are powered off, so that the first branch cable L1, the second branch cable L2 and the third branch cable L3 are powered off simultaneously.

10. A method for automatically adjusting the position of a wire core, applied to an intelligent cable with adjustable wire core position, characterized in that: The following steps are involved: . Step S120, the cable is powered on, so that the first branch cable L1 is powered on; Step S220, the temperature sensor detects the current temperature inside the cable; Step S320, determining whether the current temperature inside the cable is higher than the threshold value T2, if yes, proceeding to step S420, if no, proceeding to step S120; Step S420, energizing the first branch cable L1 and the second branch cable L2 simultaneously; Step S520, determining whether the current temperature inside the cable is higher than the threshold value T2, if yes, proceeding to step S620, if no, proceeding to step S420; Step S620, energizing the first branch cable L1, the second branch cable L2, and the third branch cable L3 simultaneously; Step S720, determining whether the current temperature inside the cable is higher than the threshold value T2, if yes, proceeding to step S820, if no, proceeding to step S620; Step S820: The cables are powered off, so that the first branch cable L1, the second branch cable L2 and the third branch cable L3 are powered off simultaneously.

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