Early warning system for cable reel and power utilization detection method for cable reel

Abstract

The early warning system for the cable reel comprises a reel body, and the reel body comprises a power input interface and an output interface; the digital display module is connected with a power supply line of the disc body through a wire, and the digital display module is used for displaying voltage in real time; the early warning module comprises a current detection unit, an early warning trigger unit electrically connected with the current detection unit, and a visual warning unit; the early warning trigger unit starts early warning when detecting that the current value reaches a preset safety threshold value, the early warning trigger unit controls the on-off state of the visual warning unit, and the current detection unit comprises a current sensing switch and a relay connected with the current sensing switch in series; the current sensing switch is connected in series with a power supply circuit of the panel body, and a control coil of the relay is connected in series with the current sensing switch; a voltage and current power meter digital display device is installed on the back of the cable reel, and it is ensured that an electric worker knows the working state of the cable reel in real time.

Description

Technical Field

[0001] The present invention relates to the field of cable reels, in particular to an early warning system for a cable reel and an electricity detection method for a cable reel. Background Art

[0002] As a convenient electric tool, cable reel has been widely used in the production process of enterprises and is an indispensable equipment in temporary power operations.

[0003] When using existing cable reels, operators cannot monitor the operating voltage of the cable reel in real time, which can lead to accidental electric shock. Operators also cannot monitor the current current and power of the cable reel in real time, so they continue to connect high-power equipment, potentially overloading the cable reel. If the overload protection fails to activate, the cable reel may burn. If the overload protection activates, other normally used electrical equipment may stop working.

[0004] Therefore, operators need to know the current and voltage of the cable reel in real time while working. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is: how to enable operators to understand the current and voltage of the cable reel in real time while working.

[0006] The above technical problems are solved by the following technical solutions: The present invention proposes an early warning system for a cable reel, which includes a reel body, the reel body including a power input interface and an output interface; a digital display module, which is connected to the power supply line of the reel body through a wire, and the digital display module is used to display voltage, current and power parameters in real time; an early warning module, including a current detection unit, an early warning trigger unit electrically connected to the current detection unit, and a visual warning unit; the early warning trigger unit activates the early warning when it detects that the current value reaches a preset safety threshold, and the early warning trigger unit controls the on and off state of the visual warning unit.

[0007] In a preferred embodiment of the cable reel warning system of the present invention: the current detection unit includes a current sensing switch and a relay connected in series with the current sensing switch; the current sensing switch is connected in series with the power supply line of the reel body, and the control coil of the relay is connected in series with the current sensing switch.

[0008] In a preferred embodiment of the cable reel warning system of the present invention: the relay controls the on / off state of the visual warning unit; when the current sensing switch detects a current value greater than or equal to 90% of the rated current of the cable reel, the visual warning unit is triggered to remain on.

[0009] In a preferred embodiment of the cable reel early warning system of the present invention: it also includes a voltage identification module, which includes a voltage detection unit, which indirectly determines the voltage status by detecting the current value of the reel power supply circuit; a logic judgment unit, which presets the correspondence between the safety voltage threshold and the current value, and triggers a safety indication when it is detected that the current value meets the safety condition; a visual status indication unit, which includes at least two status identifications for distinguishing between safe voltage and dangerous voltage.

[0010] In a preferred embodiment of the cable reel warning system of the present invention: the voltage identification module also includes a voltage divider resistor network, which forms a detection circuit with the live wire and the neutral wire of the reel; the detection circuit is connected in series with the current sensing switch.

[0011] In a preferred embodiment of the cable reel warning system of the present invention: the current sensing switch controls the on / off state of the visual status indication unit, and the visual status indication unit includes a safety indicator light; the two state indicators of the safety indicator light are light color and flashing frequency.

[0012] In a preferred embodiment of the cable reel warning system of the present invention, the visual warning unit includes a buzzer, which triggers an audible and visual alarm when the current is greater than the rated current.

[0013] In order to solve the above technical problems, the present invention also provides a cable reel electricity detection method: applied to the cable reel early warning system, it also includes, first connecting the power supply to the power input interface of the reel body; collecting the input voltage and output current signals of the cable reel in real time through the current detection unit; synchronously displaying the voltage value, current value and real-time power on the digital display module; when it is detected that the current value reaches the preset safety threshold, starting the graded early warning mechanism: when the current value is greater than or equal to the first preset threshold, triggering the first level early warning measures; when the current value is greater than or equal to the second preset threshold, triggering the second level early warning measures; judging the safety of the cable reel working voltage by detecting the current state of the power supply circuit: when the detected current meets the safety conditions, activating the safe voltage indication; when the detected current exceeds the safety range, triggering the dangerous voltage alarm.

[0014] In a preferred embodiment of the cable reel power consumption detection method of the present invention: the first preset threshold is 90% of the cable reel rated current, and the second preset threshold is 100% of the cable reel rated current; the first-level early warning measures include: starting the yellow early warning indicator light to light continuously; sending a load reduction instruction to the associated equipment; the second-level early warning measures include: starting the red alarm indicator light to flash; cutting off the main power supply circuit and locking the circuit until manually reset.

[0015] In a preferred embodiment of the cable reel power consumption detection method of the present invention, a voltage-dividing resistor network is connected in series in the power supply circuit to form a detection branch; the current value of the detection branch is detected in real time; and the equivalent voltage value is calculated according to the formula V=I×R, where:

[0016] when When , it is determined to be a safe voltage;

[0017] when When it is detected, it is judged as dangerous voltage;

[0018] The voltage status is visually displayed through a dual-color LED indicator.

[0019] The beneficial effect of the present invention is that a voltage, current and power meter digital display device is installed on the back of the cable drum, ensuring that electrical operators can understand the working status of the cable drum in real time.

[0020] The cable reel is installed with voltage indicator lights of different colors to indicate the voltage status. For example, when the "green light is on", it means the voltage is lower than 36V, and when the "green light is off", it means the voltage is higher than 36V.

[0021] The cable reel is equipped with a current indicator light, which displays the current status through the flashing frequency of the indicator light. For example, when the cable working current reaches more than 90% of the rated current of the cable reel, the current indicator light will light up continuously, reminding the electrical operator to pay attention to the power size of the connected equipment to prevent overload tripping and affecting the normal operation of other electrical appliances. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0023] Figure 1 Shows the overall structural schematic diagram of the cable reel;

[0024] Figure 2 The following is a flow chart of a method for detecting power consumption of a cable reel;

[0025] Figure 3 Shows the wiring diagram of the digital display module of the cable reel;

[0026] Figure 4 Shows a circuit diagram of a visual warning unit of a cable reel;

[0027] Figure 5 Shows the circuit schematic diagram of the visual status indication unit of the cable reel.

[0028] In the figure: 1. Digital display module; 11. Power supply; 2. Current detection unit; 3. Rectification circuit; 4. Early warning trigger unit; 5. Visual warning unit; 6. Voltage detection unit; 7. Filter circuit; 8. Logic judgment unit; 9. Visual status indication unit. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0030] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0031] Reference Figure 1 - Figure 3 and Figure 4 As shown, this embodiment provides an early warning system for a cable reel, including a reel body, which includes an input interface and an output interface of a power supply 11; a digital display module 1, which is connected to the power supply line of the reel body through a wire, and the digital display module 1 is used to display voltage, current and power parameters in real time; an early warning module, including a current detection unit 2, an early warning trigger unit 4 electrically connected to the current detection unit 2, and a visual warning unit 5; the early warning trigger unit 4 starts the early warning when it detects that the current value reaches a preset safety threshold, and the early warning trigger unit 4 controls the on and off state of the visual warning unit 5.

[0032] Specifically, the current detection unit 2 includes a current sensing switch and a relay connected in series with the current sensing switch; the current sensing switch is connected in series with the power supply circuit of the disk, and the control coil of the relay is connected in series with the current sensing switch.

[0033] Furthermore, the relay controls the on / off state of the visual warning unit 5; when the current sensing switch detects that the current value is greater than or equal to 90% of the rated current of the cable reel, the visual warning unit 5 is triggered to remain on.

[0034] It should be noted that the visual warning unit 5 can use LED lights of different colors to display whether the detected current value is greater than the rated current of the cable reel.

[0035] Reference Figure 1 - Figure 3 and Figure 5As shown, in one embodiment provided in the present application, a voltage identification module is also included, which includes a voltage detection unit 6, which indirectly determines the voltage state by detecting the current value of the disk power supply circuit; a logic judgment unit 8, which presets the correspondence between the safety voltage threshold and the current value, and triggers a safety indication when it is detected that the current value meets the safety condition; a visual status indication unit 9, which includes at least two status identifications for distinguishing between safe voltage and dangerous voltage.

[0036] Specifically, the voltage identification module further includes a voltage-dividing resistor network, which forms a detection loop with the live wire and the neutral wire of the disk; the detection loop is connected in series with the current sensing switch.

[0037] Furthermore, the current sensing switch controls the on / off state of the visual status indicating unit 9, which includes a safety indicator light; the two state identifiers of the safety indicator light are light color and flashing frequency.

[0038] Furthermore, the visual warning unit 5 includes a buzzer, which triggers an audible and visual alarm when the current is greater than the rated current.

[0039] Reference Figure 2 As shown, in one embodiment provided in the present application, a cable reel power detection method is also provided, including a cable reel early warning system, which also includes: first connecting the power supply 11 to the power supply 11 input interface of the reel body; collecting the input voltage and output current signals of the cable reel in real time through the current detection unit 2; synchronously displaying the voltage value, current value and real-time power on the digital display module 1; when it is detected that the current value reaches a preset safety threshold, starting a graded early warning mechanism: when the current value is greater than or equal to the first preset threshold, triggering the first level early warning measures; when the current value is greater than or equal to the second preset threshold, triggering the second level early warning measures; judging the safety of the cable reel working voltage by detecting the current state of the power supply circuit: when the detected current meets the safety conditions, activating the safe voltage indication; when the detected current exceeds the safety range, triggering the dangerous voltage alarm.

[0040] Specifically, the first preset threshold is 90% of the rated current of the cable reel, and the second preset threshold is 100% of the rated current of the cable reel; the first-level early warning measures include: starting the yellow warning indicator light to light continuously; sending a load reduction instruction to the associated equipment; the second-level early warning measures include: starting the red alarm indicator light to flash; cutting off the main power supply circuit and locking the circuit until manually reset.

[0041] Furthermore, a voltage-dividing resistor network is connected in series in the power supply circuit to form a detection branch; the current value of the detection branch is detected in real time; and the equivalent voltage value is calculated according to the formula V=I×R, where:

[0042] when When , it is determined to be a safe voltage;

[0043] when When it is detected, it is judged as dangerous voltage;

[0044] The voltage status is visually displayed through a dual-color LED indicator.

[0045] Working principle: Refer to Figure 4 and Figure 5 As shown, the present invention also incorporates two independent detection circuits within the cable reel, connected to the voltage and current signal acquisition terminals of the digital display device. The voltage sampling circuit converts the high-voltage input signal into a low-voltage signal via a voltage-divider resistor network. A rectifier circuit 3 filters the AC component of the pulsating DC voltage through a filter circuit 7, retaining the DC component. This reduces the ripple factor of the output voltage and smoothes the waveform. After analog-to-digital conversion via an ADC chip, the voltage value is calculated in real time by a microcontroller. The current sampling circuit utilizes a Hall-effect sensor connected in series to the load output terminal. This sensor detects magnetic field changes and outputs a voltage signal proportional to the current, enabling high-precision current monitoring within a specified range. After processing these two signals, the digital display module 1 simultaneously displays the voltage, current, and power parameters. The response time is controlled within 100ms, with an accuracy of ±1.5% FS, allowing operators to intuitively understand the real-time operating status of the cable reel.

[0046] It should also be noted that the current sensing switch mainly uses a Hall sensor, which is connected in series to the main power supply circuit. When it is detected that the load current reaches 90% of the rated value, the sensor outputs a voltage signal to trigger the relay coil to energize, thereby controlling the yellow indicator light to remain on, and at the same time sending a load reduction instruction to the associated equipment through the RS485 interface; when the current further increases to 100% of the rated value, the relay contact switches state to cut off the main circuit power supply, the red indicator light flashes at a high frequency and activates the sound and light alarm, and the circuit breaker state is locked by the mechanical locking mechanism until it is manually reset; by setting different ranges for the dynamic threshold, such as setting it to 90% to 100% of the rated current, a gradient response of the overload protection is achieved, which not only avoids frequent false triggering, but also reserves an operation window for emergency response.

[0047] When detecting voltage, a detection branch circuit can be formed by connecting 500Ω and 1000Ω precision resistors in series between the live and neutral wires. When the line voltage is normal (≤36V), the current flowing through the resistor is less than 0.72A (36V / 500Ω), the internal contacts of the current sensing switch close, triggering the relay to operate, and the green indicator light stays on, indicating that the voltage is safe. When the voltage rises abnormally (>36V), the current in the detection branch exceeds the threshold, the current sensing switch opens, causing the relay to release, the green indicator light goes out, and the red indicator light starts flashing as an alarm. Dimming technology is used to achieve gradual brightness changes to enhance the visual warning effect. The combination of current value and resistor voltage divider can effectively eliminate the risk of misjudgment of a single detection method and ensure the accuracy of safe voltage identification.

[0048] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. An early warning system for a cable reel, characterized by: include, A disk body, the disk body including a power supply (11) input interface and an output interface; A digital display module (1) is connected to the power supply line of the disk through a wire, and the digital display module (1) is used to display voltage, current and power parameters in real time; An early warning module comprises a current detection unit (2), an early warning trigger unit (4) electrically connected to the current detection unit (2), and a visual warning unit (5); The early warning trigger unit (4) starts an early warning when it detects that the current value reaches a preset safety threshold value, and the early warning trigger unit (4) controls the on / off state of the visual warning unit (5).

2. The cable reel warning system according to claim 1, characterized in that: The current detection unit (2) comprises a current sensing switch and a relay connected in series with the current sensing switch; The current sensing switch is connected in series with the power supply circuit of the disk, and the control coil of the relay is connected in series with the current sensing switch.

3. The cable reel warning system according to claim 2, characterized in that: The relay controls the on / off state of the visual warning unit (5); When the current sensing switch detects a current value greater than or equal to 90% of the rated current of the cable reel, the visual warning unit (5) is triggered to be continuously turned on.

4. The cable reel warning system according to claim 3, characterized in that: Also included is a voltage identification module, which includes, A voltage detection unit (6) indirectly determines the voltage status by detecting the current value of the disk power supply circuit; A logic judgment unit (8) presets a corresponding relationship between a safety voltage threshold and a current value, and triggers a safety indication when it is detected that the current value meets a safety condition; The visual status indication unit (9) includes at least two status identifiers for distinguishing between safe voltage and dangerous voltage.

5. The cable reel warning system according to claim 4, characterized in that: The voltage identification module further includes a voltage-dividing resistor network, which forms a detection circuit with the live wire and the neutral wire of the disk; The detection circuit is connected in series with the current sensing switch.

6. The cable reel warning system according to claim 5, characterized in that: The current sensing switch controls the on / off state of the visual status indication unit (9), and the visual status indication unit (9) includes a safety indicator light; The two status identifiers of the safety indicator light are light color and flashing frequency.

7. The cable reel warning system according to claim 6, characterized in that: The visual warning unit (5) comprises a buzzer, which triggers an audible and visual alarm when the current is greater than the rated current.

8. A method for detecting power consumption of a cable reel, characterized in that: The cable reel warning system according to any one of claims 1 to 7 further comprises: First, connect the power supply (11) to the power supply (11) input interface of the disk; The input voltage and output current signals of the cable drum are collected in real time through the current detection unit (2); The voltage value, current value and real-time power are synchronously displayed on the digital display module (1); When the current value is detected to have reached the preset safety threshold, the hierarchical warning mechanism is activated: when the current value is greater than or equal to the first preset threshold, the first level warning measures are triggered; When the current value is greater than or equal to the second preset threshold, the second level warning measure is triggered; By detecting the current status of the power supply circuit, the safety of the cable reel working voltage is judged: when the detected current meets the safety conditions, the safe voltage indication is activated; when the detected current exceeds the safety range, the dangerous voltage alarm is triggered.

9. The cable reel power consumption detection method according to claim 8, characterized in that: The first preset threshold is 90% of the rated current of the cable reel, and the second preset threshold is 100% of the rated current of the cable reel; The first-level early warning measures include: Start the yellow warning indicator light to light up continuously; Send load reduction instructions to associated equipment; The second-level early warning measures include: Start the red alarm indicator light to flash; Cut off the main power supply circuit and lock the circuit until it is manually reset.

10. The cable reel power consumption detection method according to claim 9, characterized in that: A voltage-dividing resistor network is connected in series in the power supply circuit to form a detection branch; Real-time detection of the current value of the detection branch; Calculate the equivalent voltage value according to the formula V = I × R, where: when When , it is determined to be a safe voltage; when When it is detected, it is judged as dangerous voltage; The voltage status is visually displayed through a dual-color LED indicator.

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