State indication system for cable circulation device

Abstract

The invention relates to the technical field of power line fault indication, in particular to a state indication system for a cable circulation device, which comprises a light-emitting module, a color filtering module and a control module which are respectively connected with the light-emitting module, the color filtering module and the cable circulation device, the processor is used for determining the state of the cable according to the cable current collected by the cable circulation device, determining the stroke position of the corresponding filter film roller according to the state of the cable, and determining the indication state of the filter film belt according to the variation of the thickness of the filter film belt on the filter film roller and the variation of the width of the filter film belt; the problem that in the prior art, in a strong light environment, an indication part with a fault indication function is not clear in display, and whether a line breaks down or not is not easy to distinguish is solved, and the cable state can still be indicated under different ambient lights.

Description

Technical Field

[0001] The present invention relates to the technical field of power line fault indication, and particularly to a status indication system for a cable circulating current device. Background Art

[0002] In the prior art, cable circulating current sensors are widely used to monitor the operating status of cables to ensure the safety and stability of the power system. However, these sensors are usually installed at high altitudes or in dangerous areas that are difficult to directly access, such as high-voltage utility poles, underground passages, or other concealed locations. Although the circulating current sensors can upload abnormal statuses to the background monitoring system, it is difficult for on-site maintenance personnel to directly and intuitively observe the operating status of the sensors during daily line inspections without system support. This limitation may prevent maintenance personnel from discovering problems in a timely manner and may even pose potential safety hazards.

[0003] Chinese Patent Publication No.: CN103091600B discloses a power line fault indicator, which includes a housing, a wire clamping part, a control circuit part with detection and judgment functions; an indication part with fault indication functions; the indication part includes a display body, which is located at the bottom of the housing, contains a light-emitting diode array, and is connected to the control circuit inside the housing through a driving line. It can be seen that the indication part indicates line faults by the light-emitting diode array, and there is a problem that when in a strong light environment, the indication part with fault indication functions is not clearly displayed, and it is not easy to distinguish whether the line is faulty. Summary of the Invention

[0004] Therefore, the present invention provides a status indication system for a cable circulating current device to overcome the problem in the prior art that when in a strong light environment, the indication part with fault indication functions is not clearly displayed, and it is not easy to distinguish whether the line is faulty.

[0005] To achieve the above object, the present invention provides a status indication system for a cable circulating current device, including: a light-emitting module, including a light-emitting sheet for generating light of a corresponding indication color, a C-shaped opening and closing frame disposed between the light-emitting sheet and the cable circulating current device for fixing the light-emitting sheet on the cable circulating current device, and a light sensor disposed at one end of the cable circulating current device for collecting the ambient light intensity;

[0006] a color filtering module, which is connected to the light-emitting module for filtering out non-corresponding indication colors, including a filter film band disposed around the light-emitting sheet, and two sets of rotating components connected to the filter film band and respectively disposed at two open ends of the C-shaped opening and closing frame for driving the filter film band to rotate. For a single rotating component, it includes a filter film roller and a stepping motor connected to the filter film roller;

[0007] A control module, which is respectively connected to the light-emitting module, the color filter module, and the cable circulating current device, is used to determine the state of the cable according to the cable current collected by the cable circulating current device, determine the stroke position of the corresponding filter film roller according to the state of the cable, and determine the indication state of the filter film belt according to the change amount of the thickness and the change amount of the width of the filter film belt on the filter film roller;

[0008] Among them, the stroke position of the filter film belt is determined according to the operating current of the stepper motor; the light-emitting state of the light-emitting chip is determined according to the cable state and the ambient light intensity.

[0009] Further, the filter film belt includes at least two color segments, the length of each color segment is the arc length of the C-shaped opening and closing frame, the ends of the filter film belt are respectively fixed on two filter film rollers, and the segments of the filter film belt that do not correspond to the indicated color are wound on the filter film rollers, and the segments corresponding to the indicated color are wound around the outside of the light-emitting chip.

[0010] Further, the C-shaped opening and closing frame includes two mutually hinged C-shaped opening and closing sub-frames.

[0011] Further, the control module is respectively connected to the light sensor and the current sensor built in the cable circulating current device, is used to obtain the ambient light intensity, the cable current, and the operating current of the stepper motor, determine that the cable is in an abnormal state according to the cable current being greater than or equal to the set current threshold, and determine that the light is sufficient and the light is insufficient according to the ambient light intensity being greater than or equal to / less than the set light intensity threshold respectively.

[0012] Further, the control module controls the corresponding filter film roller to rotate to the corresponding stroke position according to the cable being in an abnormal state and the light being sufficient, and controls the corresponding filter film roller to rotate to the corresponding stroke position and controls the light-emitting chip to emit light of the corresponding indicated color according to the cable being in an abnormal state and the light being insufficient.

[0013] Further, the control module is used to control two filter film rollers to rotate in opposite directions to release the filter film belt, and record the current obtained by the current sensor at the moment when the filter film belt is released as the reference current;

[0014] The control module is used to control two filter film rollers to rotate in the reverse direction to recover the filter film belt so as to restore the filter film belt to the original state before it is released;

[0015] The control module is used to control two stepper motors to rotate clockwise with low torque and record the number of pulses of the stepper motors. According to the moment when the operating current of the stepper motor reaches the reference current, it is determined that the filter film belt runs to the end position on one side;

[0016] The control module is used to control two stepper motors to rotate counterclockwise and execute the number of pulses of the stepper motors to restore the filter film strip to its initial position.

[0017] Further, the control module is used to configure and store the stroke positions of the filter film rollers corresponding to the respective color segments in the filter film strip that are respectively wound around the outside of the light-emitting sheet.

[0018] Further, the control module calculates the rotation angle of each stepper motor during the process of rotating the filter film roller from the current stroke position to the stroke position corresponding to the indicated color segment according to the stroke position of the filter film roller corresponding to the indicated color segment stored in the configuration, the thickness of the filter film strip, the diameter of the filter film roller, and the current stroke position of the filter film roller, and determines the number of pulses of each corresponding stepper motor according to the rotation angle;

[0019] The control module is used to control each stepper motor to execute the number of pulses to rotate the filter film roller from the current stroke position to the stroke position corresponding to the indicated color segment.

[0020] Further, the control module is connected to an ultrasonic sensor to obtain the thickness and width of the filter film strip under the condition of the same number of rolling circles, and determines to reduce the reverse rotation frequency of the filter film strip according to that the change amount of the thickness of the filter film strip is greater than a preset first thickness change amount and the change amount of the width is less than a preset first width change amount.

[0021] Further, the control module is connected to the ultrasonic sensor and is also used to correct the rotation speed of the corresponding filter film roller according to the actual rotation speed of the filter film roller under the condition that the change amount of the thickness of the filter film strip is less than a preset second thickness change amount and the change amount of the width is greater than a preset second width change amount.

[0022] Compared with the prior art, the beneficial effect of the present invention is that by providing a light-emitting module, a color-filtering module, and a control module respectively connected to the light-emitting module, the color-filtering module, and the cable circulating current device, the control module determines the state of the cable according to the cable current collected by the cable circulating current device, determines the stroke position of the corresponding filter film roller according to the state of the cable, and determines the light-emitting state of the light-emitting sheet according to the cable state and the ambient light intensity, solving the problem in the prior art that when in a strong light environment, the indication part with a fault indication function is not clearly displayed and it is not easy to distinguish whether the line is faulty, and realizing the indication of the cable state for different ambient lights.

[0023] Furthermore, the C-shaped opening and closing frame includes two mutually hinged C-shaped opening and closing sub-frames for fixing the light-emitting sheet on the cable circulation device. With the two mutually hinged C-shaped opening and closing sub-frames, it is convenient to be directly installed on the cable circulation device without the aid of tools.

[0024] Furthermore, the light-emitting sheet is disposed around the C-shaped opening and closing frame, and the filter film strip is disposed around the light-emitting sheet, so that the state of the cable can be indicated by the light-emitting sheet and the filter film strip within the arc length range of the entire C-shaped opening and closing frame, solving the problem that the display part with the state indication function in the prior art occupies a small proportion of the surface area of the entire device.

[0025] Furthermore, the control module determines the stroke position of the filter film strip according to the operating current of the stepping motor, solving the problem of losing the stroke position of the filter film strip in case of power failure or abnormality.

[0026] Furthermore, it is determined to reduce the reverse rotation frequency of the filter film strip according to the condition that the change amount of the thickness of the filter film strip is greater than a preset first thickness change amount and the change amount of the width is less than a preset first width change amount. It solves the problem that the temperature rises due to the fast rotation speed of the filter film strip, and the particulate pollutants in the environment are inhaled into the filter film strip, resulting in an increase in the particulate pollutants attached to the filter film strip and causing the color of the filter film strip to become thinner.

[0027] Furthermore, under the condition that the change amount of the thickness of the filtering film strip is less than a preset second thickness change amount and the change amount of the width is greater than a preset second width change amount, the rotation speed of the corresponding filter film roller is corrected according to the actual rotation speed of the filter film roller. It solves the problem that the speeds of the two filter film rollers are inconsistent, resulting in the elongation of the filter film strip and causing the color of the filter film strip to become thinner. Description of the Drawings

[0028] Figure 1 It is a schematic structural diagram of the state indication system according to an embodiment of the present invention;

[0029] Figure 2 It is a logic block diagram of the state indication system according to an embodiment of the present invention;

[0030] Figure 3 It is a logic block diagram of the color filter module according to an embodiment of the present invention;

[0031] Figure 4 It is a schematic diagram of the working principle of the light-emitting sheet and the filter film strip according to an embodiment of the present invention;

[0032] Description of the reference numerals: 1 - C-shaped opening and closing frame, 2 - cable circulation device, 3 - light-emitting sheet, 4 - cable, 5 - filter film strip, 6 - filter film roller. Detailed Embodiments

[0033] In order to make the objectives and advantages of the present invention more clear and understandable, the present invention will be further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present invention and do not limit the protection scope of the present invention.

[0035] It should be noted that in the description of the present invention, the terms indicating directions or positional relationships such as "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings. This is only for convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0036] In addition, it should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0037] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 as shown, which are respectively the structural schematic diagram of the status indication system for the cable circulation device, the logic block diagram of the status indication system, the logic block diagram of the color filter module, and the working principle schematic diagram of the light-emitting sheet and the color filter film strip in the embodiments of the present invention; A status indication system for a cable circulation device 2 in an embodiment of the present invention includes:

[0038] Specifically, a light-emitting module includes a light-emitting sheet 3 for generating light of a corresponding indication color, a C-shaped opening and closing frame 1 disposed between the light-emitting sheet 3 and the cable circulation device 2 for fixing the light-emitting sheet 3 on the cable circulation device 2, and a light sensor disposed at one end of the cable circulation device 2 for collecting the ambient light intensity. The cable circulation device 2 is sleeved on a cable 4.

[0039] In this embodiment, the color filter module is connected to the light emitting module and is used to filter out non-corresponding indication colors. It includes a light filtering thin film strip 5 surrounding the light emitting sheet 3, and two sets of rotating components connected to the light filtering thin film strip 5 and respectively arranged at two open ends of the C-shaped opening and closing frame 1 to drive the light filtering thin film strip 5 to rotate. For a single rotating component, it includes a light filtering thin film roller 6 and a stepping motor connected to the light filtering thin film roller 6;

[0040] Among them, the light emitting sheet 3 is surrounded and arranged on the C-shaped opening and closing frame 1, and the light filtering thin film strip 5 is surrounded and arranged on the light emitting sheet 3, so that the state of the cable can be indicated by the light emitting sheet 3 and the light filtering thin film strip 5 within the arc length range of the entire C-shaped opening and closing frame 1, solving the problem that the display part with the state indication function in the prior art occupies a small proportion of the surface area of the entire device.

[0041] The control module is respectively connected to the light emitting module, the color filter module and the cable circulating current device 2, and is used to determine the state of the cable according to the cable current collected by the cable circulating current device 2, determine the stroke position of the corresponding light filtering thin film roller 6 according to the state of the cable, and determine the indication state of the light filtering thin film strip 5 according to the change amount of the thickness and the change amount of the width of the light filtering thin film strip 5 on the light filtering thin film roller 6;

[0042] Among them, the stroke position of the light filtering thin film strip 5 is determined according to the operating current of the stepping motor; the light emitting state of the light emitting sheet 3 is determined according to the cable state and the ambient light intensity.

[0043] Specifically, the light filtering thin film strip 5 includes at least two color segments, the length of each color segment is the arc length of the C-shaped opening and closing frame 1, the end of the light filtering thin film strip 5 is respectively fixed on 2 light filtering thin film rollers 6, and the segments of the light filtering thin film strip 5 with non-corresponding indication colors are wound on the light filtering thin film rollers 6, and the segments with corresponding indication colors are surrounded outside the light emitting sheet 3.

[0044] In this embodiment, the C-shaped opening and closing frame 1 is preferably two C-shaped opening and closing sub-frames that are hinged to each other and used to fix the light emitting sheet 3 on the cable circulating current device 2. Through the two C-shaped opening and closing sub-frames that are hinged to each other, it is convenient to be directly installed on the cable circulating current device 2 without the aid of tools. Those skilled in the art can make adaptive adjustments or replacements to the number of segments of the C-shaped opening and closing sub-frame of the C-shaped opening and closing frame 1 according to the actual application scenario or implementation environment.

[0045] Specifically, the control module is respectively connected to the light sensor and the current sensor built in the cable circulating current device 2 to obtain the ambient light intensity, the cable current, and the operating current of the stepping motor. It determines that the cable is in an abnormal state according to the cable current being greater than or equal to the set current threshold, and determines that the light is sufficient or insufficient according to the ambient light intensity being greater than or equal to / less than the set light intensity threshold respectively.

[0046] Optionally, the optional range of the set current threshold is [45A, 55A].

[0047] Preferably, the preferred embodiment of the set current threshold is 50A.

[0048] Optionally, the optional range of the set light intensity threshold is [95 lux, 105 lux].

[0049] Preferably, the preferred embodiment of the set light intensity threshold is 100 lux.

[0050] Those skilled in the art can understand that the preferred embodiments of the set current threshold and the set light intensity threshold are only the preferred implementation manners of the embodiments of the present invention under the condition of an outdoor temperature of 25 degrees Celsius and non-severe weather. Those skilled in the art can make adaptive adjustments or replacements to the set current threshold and the set light intensity threshold under different application scenarios or specific conditions.

[0051] Specifically, the control module controls the corresponding filter film roller 6 to rotate to the corresponding stroke position according to the cable being in an abnormal state and sufficient light, and controls the corresponding filter film roller 6 to rotate to the corresponding stroke position and controls the light emitting piece 3 to emit light of the corresponding indication color according to the cable being in an abnormal state and insufficient light.

[0052] Specifically, the control module is used to control two filter film rollers 6 to rotate in opposite directions to release the filter film belt 5, and record the current obtained by the current sensor at the moment when the filter film belt 5 is released as the reference current;

[0053] The control module is used to control two filter film rollers 6 to rotate in the reverse direction to recover the filter film belt 5 to restore the filter film belt 5 to the original state before it is released;

[0054] The control module is used to control two stepping motors to rotate clockwise with low torque and record the number of pulses of the stepping motors. According to the moment when the operating current of the stepping motors reaches the reference current, it is determined that the filter film belt 5 runs to the end position on one side;

[0055] The control module is used to control two stepping motors to rotate counterclockwise and execute the number of pulses of the stepping motors to restore the filter film strip 5 to its initial position.

[0056] In implementation, the control module determines the travel position of the filter film strip 5 according to the running current of the stepping motor, solving the problem of losing the travel position of the filter film strip 5 in case of power failure or abnormality.

[0057] Specifically, the control module is used to configure and store the travel positions of the filter film rollers 6 corresponding to the respective color segments of the filter film strip 5 wound around the outside of the light-emitting sheet 3.

[0058] Specifically, the control module calculates the rotation angle of each stepping motor during the process of rotating the filter film roller 6 from the current travel position to the travel position corresponding to the indicated color segment according to the travel position of the filter film roller 6 corresponding to the indicated color segment stored in the configuration, the thickness of the filter film strip 5, the diameter of the filter film roller 6, and the current travel position of the filter film roller 6, and determines the number of pulses of each corresponding stepping motor according to the rotation angle. The algorithm is as follows;

[0059] Variable definition:

[0060] Diameter of the filter film roller 6: D0 = 20 mm;

[0061] Thickness of the filter film strip 5: t = 0.2 mm;

[0062] The increase in diameter on the diameter of the filter film roller 6 when the filter film roller 6 rotates one week: ΔD = 2t = 0.4 mm;

[0063] Total moving length L of the filter film strip 5;

[0064] Total rotation angle of the stepping motor: θ (unit: degree);

[0065] Number of pulses required for the stepping motor to rotate 360°: p;

[0066] Total number of pulses required for the stepping motor to rotate the target angle θ: P;

[0067] Relationship between the number of winding layers and the angle: For each rotation, the angle increases by 360 and the corresponding number of layers increases by 1 layer;

[0068] Therefore, the number of layers n corresponding to the rotation angle θ is:

[0069] Calculation of the total moving length L of the filter film strip 5:

[0070] The circumference of each layer is: C k= π(D0 + (k - 1)ΔD);

[0071] The total moving length L of the filter film strip 5 is the sum of the circumferences of all layers:

[0072]

[0073] This is the sum of an arithmetic series and can be expressed as:

[0074] Further substituting the variable n, a quadratic equation about θ can be obtained:

[0075]

[0076] Using the quadratic formula to solve this quadratic equation gives:

[0077] where c = -L;

[0078] Calculate the total number of pulses required for the stepping motor to rotate to the target angle θ:

[0079] P = pxθ;

[0080] The control module is used to control each stepping motor to execute the number of pulses, and rotate the filter film roller 6 from the current stroke position to the stroke position corresponding to the indicated color segment.

[0081] In implementation, the control module is connected to the ultrasonic sensor (not shown in the figure) to obtain the thickness and width of the filter film strip 5 under the condition of the same number of rolling circles. According to the change amount of the thickness of the filter film strip 5 being greater than the preset first thickness change amount and the change amount of the width being less than the preset first width change amount, it is determined to reduce the reverse rotation frequency of the filter film strip 5. This solves the problem that due to the fast rotation speed of the filter film strip 5, the temperature rises, and particulate pollutants in the environment are inhaled into the filter film strip 5, resulting in an increase in particulate pollutants attached to the filter film strip 5 and causing the color of the filter film strip 5 to become diluted.

[0082] Among them, the working process of the ultrasonic sensor for measuring the thickness of the filter film strip 5 is as follows:

[0083] The ultrasonic sensor vertically emits ultrasonic pulses (frequency 1 - 10 MHz) to the surface of the filter film strip 5.

[0084] When the sound wave passes through the air and reaches the upper surface of the filter film strip 5, part of the sound wave is reflected (the first echo), and the remaining sound wave penetrates the filter film strip 5 and is reflected again on the lower surface (the second echo).

[0085] By measuring the time interval (Δt) between two echoes and combining with the propagation speed (v) of sound waves in the filter film strip 5, the thickness (d) is calculated as: d = v×Δt / 2.

[0086] Wherein, the working process of the ultrasonic sensor for measuring the width of the filter film strip 5 is as follows:

[0087] The ultrasonic sensor calculates the total width of the filter film strip 5 by continuously measuring the change in the position of the film edge and integrating.

[0088] Optionally, the optional range of the preset first thickness change amount is [2.0 mm, 3.6 mm], and the optional range of the preset second thickness change amount is [0.2 mm, 1.0 mm].

[0089] Preferably, the preferred embodiment of the preset first thickness change amount is 2.6 mm, and the preferred embodiment of the preset second thickness change amount is 0.6 mm.

[0090] In implementation, the control module is connected to the ultrasonic sensor and is also used to correct the rotation speed of the corresponding filter film roller 6 according to the actual rotation speed of the filter film roller 6 under the condition that the thickness change amount of the filter film strip is less than the preset second thickness change amount and the width change amount is greater than the preset second width change amount. This solves the problem that the inconsistent speeds of the two filter film rollers 6 cause the filter film strip 5 to be stretched and the color of the filter film strip 5 to become thinner.

[0091] Optionally, the optional range of the preset first width change amount is [0.5 cm, 1 cm], and the optional range of the preset second width change amount is [1.2 cm, 1.7 cm].

[0092] Preferably, the preferred embodiment of the preset first width change amount is 0.7 cm, and the preferred embodiment of the preset second width change amount is 1.4 cm.

[0093] Specifically, the preset first thickness change amount is greater than the preset second thickness change amount, and the preset first width change amount is less than the preset second width change amount.

[0094] Specifically, the meaning of the reverse rotation frequency of the filter film strip 5 is the reverse direction of the rotation direction of the filter film strip 5 when the change amount of the thickness of the filter film strip 5 is greater than the preset first thickness change amount and the width change amount is less than the preset first width change amount.

[0095] In implementation, when the change amount of the thickness of the filter film strip exceeds the preset first thickness change amount within 2 mm, the reverse rotation frequency of the filter film strip is reduced by 1 time per hour. When the change amount of the thickness of the filter film strip exceeds the preset first thickness change amount by more than 2 mm, for every 1 mm exceeded, the reverse rotation frequency of the filter film strip is reduced by 1 time per hour. For example, the current reverse rotation frequency of the filter film strip is 10 times per hour, and the change amount of the thickness of the filter film strip is 4 mm. Therefore, the reduced reverse rotation frequency of the filter film strip is 10 times per hour - 1 time per hour = 9 times per hour: among them, when exceeding 2 mm, the part exceeding 2 mm is calculated by rounding.

[0096] In implementation, a magnet is provided on the end face of the filter film roller 6, and a Hall sensor is provided directly opposite to the rotation axis of the filter film roller 6. The Hall sensor (not marked in the figure) monitors the actual rotation speed of the filter film roller 6 in real time.

[0097] Specifically, compare the difference between the actual rotation speed and the target rotation speed of the filter film roller to obtain the error rotation speed. The control module adjusts the rotation speed of the filter film roller 6 according to the error rotation speed, and verifies whether the adjusted rotation speed meets the standard, otherwise continue to adjust; the target rotation speed = the error rotation speed + the actual rotation speed of the filter film roller.

[0098] Among them, the working process of the Hall sensor for measuring the rotation speed of the filter film roller 6 is as follows: the Hall sensor generates a pulse signal by detecting the magnetic field change; when the filter film roller 6 corresponding to the stepping motor rotates, the magnet installed on the filter film roller 6 periodically passes by the Hall sensor, and the Hall sensor outputs a pulse signal proportional to the rotation speed; the rotation speed of the filter film roller 6 can be calculated by measuring the frequency of the pulse.

[0099] For different states of the cable, when the filter film roller 6 rotates to the corresponding stroke position, the corresponding indicated color segments of the filter film strip 5 are wound around the outside of the light-emitting piece 3 to represent, for example: "normal" - "green", "warning" - "yellow", "abnormal" - "red".

[0100] The light-emitting piece 3 has multiple colors, and the states identified by each color are as follows, for example: "normal" - "green", "warning" - "yellow", "abnormal" - "red".

[0101] If the ambient light is strong, the light-emitting piece 3 will not emit light. If the ambient light is insufficient, the light-emitting piece 3 will emit light of the corresponding indicated color and flash at a certain interval to save power.

[0102] To save the power of the cable circulation device 2, the internal MCU unit enters the low-power sleep state and is periodically awakened by the internal RTC unit.

[0103] Preferably, the "small wake-up period" is 10 seconds.

[0104] Preferably, the "status check wake-up period" is 30 "small wake-up periods".

[0105] Preferably, the "network connection wake-up period" is 180 "small wake-up periods".

[0106] When waking up during the "small wake-up period", according to the current state, preferably turn on the light-emitting sheet 3 of the corresponding color for 100 ms, then turn off the light-emitting sheet 3 of the selected color, then execute other business logic algorithms, and finally return to low-power sleep.

[0107] When waking up during the "status check wake-up period", sample the cable current of the current sensor and update the new state of the cable through an algorithm. If the state changes, adjust the position of the filter film strip 5, preferably turn on the light-emitting sheet 3 of the corresponding color for 100 ms, then turn off the light-emitting sheet 3 of the selected color, then execute other business logic algorithms, and finally return to low-power sleep.

[0108] When waking up during the "network connection wake-up period", in addition to current sampling and various state updates, the sensor data collected and cached during the "status check wake-up period" will be uploaded to the cloud server through wireless communication, and instructions from the cloud server will be pulled, including the "status correction value". The "status correction value" is the new cable state recalculated by the cloud based on the latest and historical sensor data and sent down. When the cable circulation device 2 finds that the "status correction value" is different from the local "status value", it will immediately apply the cloud "status correction value" to the local "status value" and perform a state update, and then return to low-power sleep after completion.

[0109] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A status indication system for a cable circulation device, characterized in that: include: The light-emitting module comprises a light-emitting sheet for generating light of a corresponding indicated color, a C-shaped opening and closing frame arranged between the light-emitting sheet and the cable circulation device for fixing the light-emitting sheet on the cable circulation device, and a light sensor arranged at one end of the cable circulation device for collecting ambient light intensity; A color filter module, which is connected to the light emitting module and is used to filter out non-corresponding indication colors, including a filter film belt arranged around the light emitting sheet, and two sets of rotating components connected to the filter film belt and respectively arranged at two opening ends of the C-shaped opening and closing frame to drive the filter film belt to rotate. For a single rotating component, it includes a filter film roller and a stepping motor connected to the filter film roller; A control module, which is respectively connected to the light emitting module, the color filter module and the cable circulation device, and is used to determine the state of the cable according to the cable current collected by the cable circulation device, determine the stroke position of the corresponding filter film roller according to the state of the cable, and determine the indication state of the filter film belt according to the change in thickness and width of the filter film belt on the filter film roller; Wherein, the stroke position of the filter film belt is determined according to the operating current of the stepping motor; the luminous state of the luminous sheet is determined according to the cable state and the ambient light intensity.

2. The status indication system for a cable circulation device according to claim 1, characterized in that: The filter film belt includes at least two color segments, the length of each color segment is the arc length of the C-shaped opening and closing frame, and the ends of the filter film belt are respectively fixed on two filter film rollers. The segments of the filter film belt that do not correspond to the indication color are rolled up on the filter film rollers, and the segments that correspond to the indication color are surrounded on the outside of the light-emitting sheet.

3. The status indication system for a cable circulation device according to claim 1, characterized in that: The C-shaped opening and closing frame comprises two sections of C-shaped opening and closing sub-frames which are hinged to each other.

4. The status indication system for a cable circulation device according to claim 1, characterized in that: The control module is respectively connected to the light sensor and the current sensor built into the cable circulation device to obtain the ambient light intensity, the cable current and the operating current of the stepper motor, and determines that the cable is in an abnormal state based on the cable current being greater than or equal to a set current threshold, and determines whether the light is sufficient or insufficient based on the ambient light intensity being greater than or equal to / less than a set light intensity threshold.

5. The status indication system for a cable circulation device according to claim 4, characterized in that: The control module controls the corresponding filter film roller to rotate to the corresponding stroke position according to the abnormal state of the cable and sufficient light, and controls the corresponding filter film roller to rotate to the corresponding stroke position and controls the light-emitting sheet to emit light of the corresponding indication color according to the abnormal state of the cable and insufficient light.

6. The status indication system for a cable circulation device according to claim 5, characterized in that: The control module is used to control the two filter film rollers to rotate in opposite directions to make the filter film belt come out, and the current obtained by the current sensor at the time when the filter film belt comes out is recorded as the reference current; The control module is used to control the two filter film rollers to rotate in opposite directions to recycle the filter film belt, so as to restore the filter film belt to its original state before it is dislodged; The control module is used to control the two stepper motors to rotate in the clockwise direction at a low torque, and record the number of pulses of the stepper motors, and determine when the filter film belt runs to the end position of one side according to the moment when the running current of the stepper motor reaches the reference current; The control module is used to control the two stepper motors to rotate in the counterclockwise direction and execute the pulse quantity of the stepper motors to restore the filter film belt to the initial position.

7. The status indication system for a cable circulation device according to claim 1, characterized in that: The control module is configured to store the travel positions of the filter film rollers corresponding to each color segment in the filter film belt surrounding the outer side of the light-emitting sheet.

8. The status indication system for a cable circulation device according to claim 7, characterized in that: The control module calculates the rotation angle of each stepping motor in the process of rotating the filter film roller from the current stroke position to the stroke position corresponding to the corresponding indicated color segment according to the stroke position of the filter film roller corresponding to the corresponding indicated color segment stored in the configuration, the thickness of the filter film belt, the diameter of the filter film roller, and the current stroke position of the filter film roller, and determines the number of pulses of each corresponding stepping motor according to the rotation angle; The control module is used to control each stepping motor to execute the pulse quantity, so as to rotate the filter film roller from the current stroke position to the stroke position corresponding to the indicated color segment.

9. The status indication system for a cable circulation device according to claim 8, characterized in that: The control module is connected to the ultrasonic sensor to obtain the thickness and width of the filter film belt under the same number of rolling circles, and determines to reduce the reverse rotation frequency of the filter film belt based on the fact that the change in the thickness of the filter film belt is greater than a preset first thickness change and the change in the width is less than a preset first width change.

10. The status indication system for a cable circulation device according to claim 9, characterized in that: The control module is connected to the ultrasonic sensor and is also used to measure the thickness variation of the filter film strip. Under the condition that the thickness variation is less than the preset second thickness variation and the width variation is greater than the preset second width variation, The rotation speed of the corresponding filter film roller is corrected according to the actual rotation speed of the filter film roller.

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