Inside-pipeline detector based on magnetic induction and automatic power-on and state display method

Abstract

The invention provides a pipeline internal detector based on magnetic induction and an automatic power-on and state display method, and the method comprises the steps: sensing the change of an external magnetic field through a Hall switch disposed in a cabin cover of the detector, and generating a corresponding electric signal; when the Hall switch senses a magnetic field change meeting a preset condition, a startup trigger signal is generated; the power-on trigger signal is transmitted to the control unit, and the control unit drives the power supply management circuit to switch on a power supply of the detector electronic system so as to realize automatic power-on of the detector; in the operation process of the equipment, the working state parameters of the equipment are monitored through a control unit, and corresponding state indication signals are generated; the state indication signal is transmitted to the magnetic induction display device, and the magnetic induction display device is driven to change an externally visible display state; the current working state of the equipment is judged by observing the display state of the magnetic induction display device outside the detector cabin, so that the problem of inconvenience in opening, closing and monitoring of the detector in the pipeline is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of in-pipe detector, and particularly to an in-pipe detector based on magnetic induction and an automatic start-up and state display method. BACKGROUND

[0002] Before the in-pipe detector is put into operation, it is necessary to ensure that the electronic system thereof is reliably started and in a normal working state. Since the in-pipe detection environment requires that the equipment has good sealing performance, the electronic system is usually packaged in the sealed cabin of the detector. This brings a key requirement: how to simply and reliably control the start and stop of the equipment while maintaining the sealing of the cabin, and how to intuitively confirm the running state of the equipment outside the equipment to avoid detection task failure caused by negligence or unknown state.

[0003] To realize the start and stop of the equipment and the state indication, a common method is to set a manual switch and an indicator light in the cabin. Specifically, the operator needs to open the cabin cover before the detector enters the pipe, manually start the equipment switch, and preliminarily judge whether the equipment is powered on by observing the indicator light in the cabin, and then close the cabin cover again. When the equipment is running in the pipe, the state information thereof cannot be obtained from the outside.

[0004] However, the above method has obvious deficiencies. The main problem is that after the sealed cabin cover is closed, it is impossible to verify whether the equipment has been successfully started or is running normally from the outside. The entire operation process relies on manual steps, and if the operator forgets to start the equipment or the equipment fails after starting, it can only be discovered when the ball is collected, which has caused waste of manpower and time. Therefore, there is an urgent need for a solution that can automatically or simply trigger the start of the equipment without opening the cover, and can continuously monitor the working state of the equipment from the outside in a sealed state. SUMMARY

[0005] The present application provides an in-pipe detector based on magnetic induction and an automatic start-up and state display method to solve the inconvenience of in-pipe detector switching and monitoring.

[0006] The first aspect of the present application provides an automatic start-up and state display method of an in-pipe detector based on magnetic induction, which comprises:

[0007] A Hall switch arranged inside the cabin cover of the detector senses the change of the external magnetic field and generates a corresponding electrical signal;

[0008] When the Hall switch senses a magnetic field change meeting a preset condition, a start-up trigger signal is generated;

[0009] The start-up trigger signal is transmitted to a control unit, and a power management circuit is driven by the control unit to connect the power supply of the electronic system of the detector to realize the automatic start-up of the detector;

[0010] During the operation of the device, the working state parameters of the device are monitored by the control unit, and a corresponding state indication signal is generated;

[0011] The state indication signal is transmitted to the magnetic induction display device to drive the magnetic induction display device to change its externally visible display state;

[0012] By observing the display state of the magnetic induction display device outside the detector cabin, the current working state of the device is determined.

[0013] The above method realizes automatic start of the detector and external state display through magnetic induction, which helps to reduce the dependence on manual operation, improve the observability of the device state, reduce data acquisition failure caused by operation omission, improve the reliability and operation efficiency of the device, and solve the problem of inconvenient switching and monitoring of the detector in the pipeline.

[0014] Optionally, the step of sensing the change of the external magnetic field by the Hall switch arranged inside the cabin cover of the detector comprises:

[0015] At least one Hall switch sensor is arranged on the cabin cover sealing wall of the detector;

[0016] The Hall switch sensor senses the magnetic field generated by the magnet close to the cabin cover;

[0017] When the magnet moves to a distance less than a preset threshold from the Hall switch sensor, the Hall switch sensor senses that the magnetic field strength exceeds the action threshold and changes its output level.

[0018] The Hall switch sensor arranged on the sealing wall of the detector cabin senses the magnetic field generated by the permanent magnet close to it, and changes its output level when the magnetic field strength exceeds the preset action threshold, providing a signal for subsequent control, which helps to realize non-contact triggering of the internal circuit from the outside while maintaining the sealing structure of the detector cabin.

[0019] Optionally, when the Hall switch senses a magnetic field change that meets the preset condition, the step of generating a start trigger signal comprises:

[0020] The preset condition is to continuously sense that the magnetic field strength exceeds the first threshold and maintain for more than a first time period;

[0021] The Hall switch switches its output level from low to high, and the high level signal is the start trigger signal;

[0022] The start trigger signal is sent to the switching circuit to control the relay switch or electronic switch element to close.

[0023] When the Hall switch senses that the magnetic field strength exceeds the first threshold value and lasts for more than the first time period, the output level thereof is switched from low to high to generate a power-on trigger signal, which then controls the relay or electronic switch element in the switching circuit to close, which helps to reduce the probability of false triggering caused by transient magnetic field interference and improve the reliability of the device power-on control.

[0024] Optionally, the power-on trigger signal is transmitted to a control unit, and the step of driving the power management circuit to turn on the power supply of the detector electronic system by the control unit comprises:

[0025] The control unit is a microcontroller or programmable logic device;

[0026] After the control unit receives the power-on trigger signal, it executes an initialization program and outputs a power enable signal;

[0027] The power enable signal controls the power management module to deliver the power of the battery to the data acquisition unit, the storage unit and the signal processing unit.

[0028] The control unit executes an initialization program and outputs a power enable signal after receiving the power-on trigger signal, and the power management module distributes the battery power to the data acquisition, storage and signal processing units according to the signal, which helps to realize the timing control of power-on and improve the stability of the system power-on process.

[0029] Optionally, the step of monitoring the working state parameters of the device by the control unit and generating corresponding state indication signals comprises:

[0030] The working state parameters include at least one of the power supply voltage value, the central processing unit load rate, the data storage space remaining amount and the sensor signal strength;

[0031] The control unit compares the collected working state parameters with the preset normal working range;

[0032] According to the comparison result, different state indication signals for indicating normal, warning or abnormal are generated.

[0033] The control unit compares the collected working state parameters with the preset normal working range;

[0034] Optionally, the state indication signal is transmitted to a magnetic induction display device, and the step of driving the magnetic induction display device to change its externally visible display state comprises:

[0035] The magnetic induction display device comprises a signal driving coil arranged inside the detector cabin and a state indicator arranged outside the detector cabin.

[0036] The state indication signal controls the signal driving coil to pass current in different directions or different duty cycles to generate a varying magnetic field.

[0037] The state indicator switches different color light-emitting diodes to light up or changes the flashing frequency according to the sensed varying magnetic field.

[0038] The state indication signal controls the signal driving coil inside the cabin to pass current in different directions or duty cycles to generate a varying magnetic field, and drives the state indicator outside the cabin to sense the magnetic field and switch the color of the light-emitting diode or change the flashing frequency, which helps to visually transmit the internal device state to the outside under the condition of maintaining the sealing of the detector cabin.

[0039] Optionally, the state indicator is a magnetic control multi-color indicator light; the magnetic control multi-color indicator light is internally packaged with a magnetic sensitive element capable of responding to magnetic field changes and at least two light sources of different colors; after the magnetic sensitive element senses the magnetic field changes from the signal driving coil inside the detector cabin, it switches on the circuit of light sources of different colors.

[0040] The magnetic control multi-color indicator light senses the magnetic field changes generated by the signal driving coil inside the cabin through the internal magnetic sensitive element, and switches on the circuit of light sources of different colors accordingly, which helps to realize intuitive external display of multiple device states without physically penetrating the cabin wall.

[0041] The second aspect of the present application provides a pipeline internal detector based on magnetic induction, which is used to realize the automatic start-up and state display method of the pipeline internal detector based on magnetic induction of the first aspect, and the detector comprises:

[0042] A sealed detector cabin for accommodating an electronic system;

[0043] At least one Hall switch arranged inside the detector cabin for sensing an external magnetic field and generating an electrical signal;

[0044] A control unit arranged inside the detector cabin and electrically connected to the Hall switch for processing the electrical signal and controlling the power supply and state display;

[0045] A magnetic induction display device partially arranged inside the detector cabin and partially exposing the display unit to the outside of the detector cabin for displaying the state according to the instruction of the control unit;

[0046] The Hall switch senses the magnetic field to trigger the control unit to start up, and the control unit controls the magnetic induction display device to display the state.

[0047] The pipeline detector provided in the application triggers the control unit to start up by sensing the external magnetic field through the internal Hall switch, and drives the magnetic induction display device to display the state externally, which helps to realize non-contact automatic start-up and external state monitoring while maintaining the sealing of the detector cabin, thereby reducing the dependence on manual operation and improving the convenience and maintainability of the equipment.

[0048] Optionally, the magnetic induction display device comprises:

[0049] The signal driving unit is arranged inside the detector cabin and connected with the control unit, and is used for generating an alternating magnetic field according to the state indication signal;

[0050] The state display unit is arranged outside the detector cabin and comprises a magnetic sensitive element and a visual indication element, the magnetic sensitive element senses the alternating magnetic field and controls the visual indication element to change the display mode.

[0051] The signal driving unit generates an alternating magnetic field in the cabin according to the state indication signal, and the state display unit senses the magnetic field through the magnetic sensitive element and controls the visual indication element to change the display mode, which helps to realize the information transmission of the equipment working state to the external environment while maintaining the structural integrity and sealing of the detector cabin.

[0052] Optionally, the visual indication element is a multi-color light emitting diode array.

[0053] The display mode comprises a constant green color representing normal operation, a flashing yellow color representing a warning state, and a flashing red color representing an abnormal state.

[0054] The magnetic sensitive element is a reed switch or a Hall element, which switches the display mode of the multi-color light emitting diode array according to the sensed magnetic field frequency or polarity.

[0055] The multi-color light emitting diode array senses the magnetic field frequency or polarity through the magnetic sensitive element, and switches the display constant green, flashing yellow or flashing red to correspond to different equipment states, which helps the operator to intuitively distinguish normal operation, warning and abnormal conditions, and improves the explicitness of state identification.

[0056] From the above technical solutions, the application provides a pipeline detector based on magnetic induction and an automatic starting and state display method. A Hall switch arranged inside a cover of the detector senses changes in an external magnetic field and generates corresponding electrical signals. When the Hall switch senses a magnetic field change meeting a preset condition, a starting trigger signal is generated. The starting trigger signal is transmitted to a control unit, and a power management circuit is driven by the control unit to turn on a power supply of an electronic system of the detector to realize automatic starting of the detector. During operation of the device, the control unit monitors working state parameters of the device and generates corresponding state indication signals. The state indication signals are transmitted to a magnetic induction display device to drive the magnetic induction display device to change its externally visible display state. By observing the display state of the magnetic induction display device presented outside the detector cabin, the current working state of the device is determined to solve the problem of inconvenience in switching and monitoring of the pipeline detector. BRIEF DESCRIPTION OF DRAWINGS

[0057] In order to more clearly illustrate the technical solutions of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0058] Fig. 1 A flowchart of an automatic starting and state display method of a pipeline detector based on magnetic induction provided by the embodiments of the present application is shown in the figure.

[0059] Fig. 2 A principle diagram of an automatic starting and state display method of a pipeline detector based on magnetic induction provided by the embodiments of the present application is shown in the figure. DETAILED DESCRIPTION

[0060] The embodiments will be described in detail below, and examples are shown in the drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementation described in the following embodiments does not represent all the implementations consistent with the present application. It is only an example of systems and methods consistent with some aspects of the present application.

[0061] To solve the problem of inconvenience in switching and monitoring of the pipeline detector, referring to Figs. 1-2 The embodiments of the present application provide an automatic starting and state display method of a pipeline detector based on magnetic induction. The method comprises the following steps.

[0062] S100: A Hall switch arranged inside a cover of the detector senses changes in an external magnetic field and generates corresponding electrical signals.

[0063] In some embodiments, the step of sensing the external magnetic field change by the Hall switch arranged inside the hatch of the detector comprises: arranging at least one Hall switch sensor on the sealing cabin wall of the hatch of the detector; the Hall switch sensor senses the magnetic field generated by the magnet close to the hatch; when the magnet moves to a distance less than a preset threshold from the Hall switch sensor, the Hall switch sensor senses that the magnetic field strength exceeds the action threshold and changes its output level.

[0064] It should be understood that in the above steps, the position of the Hall switch sensor arranged on the sealing cabin wall of the detector cabin body needs to be accurately calculated to ensure that it can effectively sense the external magnetic field change and is not affected by other electromagnetic interference inside the detector cabin body; when the Hall switch sensor senses the magnetic field generated by the magnet close to the hatch, the magnetic field strength and distribution characteristics of the permanent magnet need to be measured in advance to ensure that the Hall switch sensor can respond stably and accurately; when the magnet moves to a distance less than a preset threshold from the Hall switch sensor, the preset threshold is set according to the actual detection requirements and the sensitivity of the Hall switch sensor; after the Hall switch sensor senses that the magnetic field strength exceeds the action threshold and changes its output level, the level signal is transmitted to the subsequent control circuit to trigger the automatic start of the detector or other corresponding operations.

[0065] S200: When the Hall switch senses a magnetic field change that meets the preset condition, a start trigger signal is generated.

[0066] In some embodiments, when the Hall switch senses a magnetic field change that meets the preset condition, the step of generating a start trigger signal comprises: the preset condition is to continuously sense that the magnetic field strength exceeds a first threshold and maintain for more than a first time period; the Hall switch switches its output level from low to high, and the high level signal is the start trigger signal; the start trigger signal is sent to the switching circuit to control the relay switch or the electronic switch element to close.

[0067] It should be understood that the preset condition involved in the above steps is to ensure that the Hall switch sensor can accurately and stably respond to the external magnetic field change and avoid false triggering due to transient magnetic field fluctuations or interference. Continuously sensing that the magnetic field strength exceeds the first threshold and maintaining for more than the first time period can effectively filter out those transient and unstable magnetic field changes, thereby improving the reliability and stability of the system. When the Hall switch switches its output level from low to high, this change indicates that the magnetic field strength has reached a condition sufficient to trigger the start, and the high level signal as the start trigger signal is sent to the subsequent switching circuit. In the switching circuit, the high level signal controls the relay switch or the electronic switch element to close, thereby realizing the turn-on of the detector power supply and enabling the detector to automatically start and enter the working state.

[0068] S300: transmitting the start-up trigger signal to the control unit, and driving the power management circuit to turn on the power supply of the detector electronic system to realize automatic start-up of the detector.

[0069] In some embodiments, the step of transmitting the start-up trigger signal to the control unit and driving the power management circuit to turn on the power supply of the detector electronic system by the control unit comprises: the control unit is a microcontroller or a programmable logic device; after the control unit receives the start-up trigger signal, it executes an initialization program and outputs a power enable signal; the power enable signal controls the power management module to deliver the power of the battery to the data acquisition unit, the storage unit and the signal processing unit.

[0070] It should be understood that the control unit can be a microcontroller or a programmable logic device, which can be selected according to specific needs and design considerations. These devices have high flexibility and programmability, and can meet the control needs in different scenarios. Further, the control unit receives the start-up trigger signal, executes an initialization program and outputs a power enable signal, which describes the working process of the control unit after receiving the start-up trigger signal in detail. The initialization program is to ensure that the control unit and the modules connected thereto can be in a determined and stable working state, laying a foundation for subsequent normal work. The output of the power enable signal is to inform the power management module to start working and provide the required power for the units of the detector. Finally, the power enable signal controls the power management module to deliver the power of the battery to the data acquisition unit, the storage unit and the signal processing unit, which clearly defines the specific task of the power management module after receiving the power enable signal, i.e. to distribute the power of the battery to the data acquisition unit, the storage unit and the signal processing unit according to the requirements, to ensure that these units can work normally, thereby completing the automatic start-up process of the detector.

[0071] S400: During the operation of the device, the working state parameters of the device are monitored by the control unit, and corresponding state indication signals are generated.

[0072] In some embodiments, the step of monitoring the working state parameters of the device by the control unit and generating corresponding state indication signals comprises: the working state parameters include at least one of the power voltage value, the central processing unit load rate, the data storage space remaining amount and the sensor signal strength; the control unit compares the collected working state parameters with the preset normal working range; and different state indication signals for indicating normal, warning or abnormal are generated according to the comparison results.

[0073] It should be understood that the monitoring of the control unit on the working state parameters is continuous and real-time, to ensure that any abnormal changes in the process of equipment operation can be captured in time. When the collected working state parameters are within the preset normal working range, the control unit generates a normal state signal indicating that the current equipment is in good condition and each unit can function normally. If the collected working state parameters are outside the preset normal working range but have not reached a serious abnormal degree, the control unit generates a warning state signal to remind the relevant personnel that the equipment may have potential problems and needs further inspection and attention. When the collected working state parameters seriously deviate from the preset normal working range, the control unit generates an abnormal state signal, at which time the equipment may not be able to work normally and immediate measures need to be taken to troubleshoot and repair to avoid more serious consequences.

[0074] S500: transmitting the state indication signal to the magnetic induction display device to drive the magnetic induction display device to change its externally visible display state.

[0075] In some embodiments, the step of transmitting the state indication signal to the magnetic induction display device to drive the magnetic induction display device to change its externally visible display state includes that the magnetic induction display device includes a signal driving coil arranged inside the detector cabin and a state indicator arranged outside the detector cabin; the state indication signal controls the signal driving coil to pass current in different directions or different duty cycles, thereby generating a changing magnetic field; and the state indicator switches different color light-emitting diodes to light up or changes the flashing frequency according to the sensed changing magnetic field.

[0076] It should be understood that the signal driving coil passes current in different directions or different duty cycles to generate magnetic fields with different strengths and directions. The magnetic fields with different strengths and directions will cause the magnetic induction elements in the state indicator to produce different induction effects. The state indicator is designed with corresponding circuits and logic controls inside, which can accurately control different color light-emitting diodes to light up or change their original flashing frequency according to the sensed magnetic field changes. For example, when the state indication signal indicates that the equipment is in a normal working state, the signal driving coil passes current in a specific direction and duty cycle to generate a corresponding magnetic field, and the state indicator lights up a green light-emitting diode and flashes at a stable frequency after sensing the magnetic field; when the state indication signal is in a warning state, the direction and duty cycle of the current passing through the signal driving coil change, and the generated magnetic field also changes accordingly, and the state indicator switches to light up a yellow light-emitting diode and adjusts the flashing frequency appropriately; when the state indication signal is in an abnormal state, the signal driving coil passes another set of current in a specific direction and duty cycle, and the state indicator lights up a red light-emitting diode and flashes at a significantly faster frequency after sensing the corresponding magnetic field, to directly display the current working state of the equipment to the outside.

[0077] S600: judging the current working state of the device by observing the display state of the magnetic induction display device presented outside the detector cabin.

[0078] The above method realizes automatic start of the detector and external state display through magnetic induction, which helps to reduce dependence on manual operation, improve the observability of the device state, reduce data acquisition failure caused by operation omission, improve the reliability and operation efficiency of the device operation, and solve the problem of inconvenience of detector switching and monitoring in the pipeline.

[0079] In some embodiments, the state indicator is a magnetic control multi-color indicator light; the magnetic control multi-color indicator light is internally packaged with a magnetic sensitive element capable of responding to magnetic field changes and at least two light sources of different colors; after the magnetic sensitive element senses the magnetic field changes from the signal driving coil inside the detector cabin, it switches on the circuit of light sources of different colors.

[0080] It should be understood that the magnetic sensitive element in the magnetic control multi-color indicator light has high magnetic field sensitivity, which can accurately identify different magnetic field characteristics generated by the signal driving coil. When the signal driving coil inside the detector cabin passes current in a specific direction and duty cycle and generates corresponding magnetic field changes due to different working states of the device such as normal, warning or abnormal, the magnetic sensitive element will quickly capture these changes.

[0081] Based on the magnetic field changes sensed by the magnetic sensitive element, it will switch on the circuit of light sources of different colors through the internal circuit control mechanism. For example, when the device is in normal working state, the magnetic sensitive element senses a specific magnetic field and turns on the green light source circuit, so that the green light-emitting diode is lit and flashes at a stable frequency; when in warning state, the magnetic field change causes the magnetic sensitive element to switch on the yellow light source circuit, and the yellow light-emitting diode is lit and the flashing frequency is adjusted; and in abnormal state, the magnetic sensitive element senses another group of magnetic field changes, turns on the red light source circuit, and the red light-emitting diode is lit and the flashing frequency is significantly accelerated.

[0082] This design enables the magnetic control multi-color indicator light to intuitively and accurately convey the current working condition of the device to the outside through the display of light sources of different colors and the change of flashing frequency according to the actual working state inside the device.

[0083] Some embodiments of the present application also provide a pipeline detector based on magnetic induction, which is used to realize the automatic start and state display method of the pipeline detector based on magnetic induction in the above embodiments. The detector comprises:

[0084] A sealed detector cabin for accommodating an electronic system;

[0085] At least one Hall switch arranged in the cabin cover of the detector for sensing an external magnetic field and generating an electrical signal.

[0086] a control unit disposed inside the detector cabin and electrically connected with the Hall switch, for processing electrical signals and controlling power supply and state display;

[0087] a magnetic induction display device, partially disposed in the detector cabin cover and partially exposing the display unit outside the detector cabin, for displaying states according to the instruction of the control unit;

[0088] wherein the Hall switch senses the magnetic field to trigger the control unit to start, and the control unit controls the magnetic induction display device to display states.

[0089] It should be understood that the detector cabin and the cabin cover are connected, and the detector cabin is provided with a relay switch, a detector circuit and a coil; the relay switch, the detector circuit and the coil are connected in sequence, when a magnet is close to the Hall switch of the cabin cover, the Hall switch detects the magnetic field information, sends a high level to trigger the relay switch, the device starts to run the corresponding program to make the coil generate a magnetic signal, and another Hall switch of the cabin cover controls the indicator light to emit different colors according to different magnetic field information, so that the staff can understand the running state of the device outside.

[0090] The pipeline detector provided by the application triggers the control unit to start by the internal Hall switch sensing the external magnetic field, and drives the magnetic induction display device to display states outside by the control unit, which helps to realize non-contact automatic start and external state monitoring while maintaining the sealing of the detector cabin, thereby reducing the dependence on manual operation and improving the convenience and maintainability of the device.

[0091] In some embodiments, the magnetic induction display device comprises:

[0092] a signal driving unit disposed inside the detector cabin and connected with the control unit, for generating an alternating magnetic field according to a state indication signal;

[0093] a state display unit disposed outside the detector cabin and comprising a magnetic sensitive element and a visual indication element, the magnetic sensitive element senses the alternating magnetic field and controls the visual indication element to change the display mode.

[0094] The signal driving unit generates an alternating magnetic field in the cabin according to the state indication signal, and the state display unit senses the magnetic field through the magnetic sensitive element and controls the visual indication element to change the display mode, which helps to realize the information transmission of the device working state to the external environment while maintaining the structural integrity and sealing of the detector cabin.

[0095] In some embodiments, the visual indication element is a multi-color light emitting diode array;

[0096] The display mode includes constant green indicating normal operation, flashing yellow indicating warning state, and flashing red indicating abnormal state;

[0097] The magnetic sensitive element is a dry reed or a Hall element, which switches the display mode of the multi-color light emitting diode array according to the frequency or polarity of the induced magnetic field.

[0098] The multi-color light emitting diode array senses the frequency or polarity of the magnetic field through the magnetic sensitive element, switches the display of constant green, flashing yellow or flashing red to correspond to different device states, which helps the operator to intuitively distinguish normal operation, warning and abnormal situation, and improves the explicitness of state identification.

[0099] From the above technical solutions, the embodiment of the present application provides a pipeline detector based on magnetic induction and an automatic start-up and state display method. A Hall switch arranged inside the hatch of the detector senses the external magnetic field change and generates a corresponding electrical signal. When the Hall switch senses a magnetic field change that meets the preset condition, a start-up trigger signal is generated. The start-up trigger signal is transmitted to the control unit, and the power management circuit is driven by the control unit to connect the power supply of the detector electronic system, so as to realize the automatic start-up of the detector. During the operation of the device, the control unit monitors the working state parameters of the device and generates a corresponding state indication signal. The state indication signal is transmitted to the magnetic induction display device to drive the magnetic induction display device to change its externally visible display state. By observing the display state of the magnetic induction display device outside the detector cabin, the current working state of the device is determined, so as to solve the problem of inconvenient switching and monitoring of the pipeline detector.

[0100] The similar parts between the embodiments provided by the present application can be referred to each other, and the specific embodiments provided above are only several examples under the general concept of the present application, and do not constitute the limitation of the protection scope of the present application. For those skilled in the art, any other embodiments extended according to the present application scheme without creative labor are within the protection scope of the present application.

Claims

1. A method for automatic start-up and status display of a magnetic induction based in-pipe detector, characterized in that, The method comprises: a Hall switch arranged inside the cover of the detector senses the change of the external magnetic field and generates a corresponding electrical signal; when the Hall switch senses a magnetic field change meeting a preset condition, a power-on trigger signal is generated; the power-on trigger signal is transmitted to a control unit, and the control unit drives a power management circuit to turn on the power supply of the detector electronic system to realize automatic start of the detector; during the operation of the device, the control unit monitors the working state parameters of the device and generates a corresponding state indication signal; the state indication signal is transmitted to a magnetic induction display device to drive the magnetic induction display device to change its externally visible display state; the current working state of the device is determined by observing the display state of the magnetic induction display device outside the detector cabin.

2. The automatic power-on and status display method for a magnetic induction based in-pipe detector according to claim 1, characterized in that, The step of sensing the change of the external magnetic field by the Hall switch arranged inside the cover of the detector comprises: at least one Hall switch sensor is arranged on the cabin wall of the detector cabin cover; the Hall switch sensor senses the magnetic field generated by the magnet close to the cabin cover; when the magnet moves to a distance less than a preset threshold from the Hall switch sensor, the Hall switch sensor senses that the magnetic field strength exceeds the action threshold and changes its output level.

3. The method of claim 2, wherein the method further comprises: The step of generating a power-on trigger signal when the Hall switch senses a magnetic field change meeting a preset condition comprises: the preset condition is to continuously sense that the magnetic field strength exceeds a first threshold and maintain for more than a first time period; the Hall switch switches its output level from low to high, and the high level signal is the power-on trigger signal; the power-on trigger signal is sent to a switching circuit to control the closure of a relay switch or an electronic switch element.

4. The method of claim 1, wherein the method further comprises: The step of transmitting the power-on trigger signal to the control unit and driving the power management circuit to turn on the power supply of the detector electronic system by the control unit comprises: the control unit is a microcontroller or a programmable logic device; after receiving the power-on trigger signal, the control unit executes an initialization program and outputs a power enable signal; the power enable signal controls the power management module to deliver the power of the battery to the data acquisition unit, the storage unit and the signal processing unit.

5. The method of claim 1, wherein the method further comprises: The step of monitoring the working state parameters of the device by the control unit and generating a corresponding state indication signal comprises: the working state parameters include at least one of the power supply voltage value, the central processing unit load rate, the data storage space remaining amount and the sensor signal strength; the control unit compares the collected working state parameters with the preset normal working range; different state indication signals are generated according to the comparison results to indicate normal, warning or abnormal.

6. The method of claim 1, wherein the method further comprises: The step of transmitting the state indication signal to the magnetic induction display device and driving the magnetic induction display device to change its externally visible display state comprises: the magnetic induction display device comprises a signal driving coil arranged inside the detector cabin and a state indicator arranged outside the detector cabin; the state indication signal controls the signal driving coil to pass in different directions or different duty cycles to generate a changing magnetic field; The state indicator switches different color light-emitting diodes to light or changes the flashing frequency according to the sensed change in the magnetic field.

7. The method of claim 6, wherein the method further comprises: The state indicator is a magnetic control multicolor indicator light; the magnetic control multicolor indicator light is internally packaged with a magnetic sensitive element and at least two light sources of different colors that can respond to changes in the magnetic field; after the magnetic sensitive element senses the change in the magnetic field from the signal driving coil inside the detector cabin, it switches on the circuit of light sources of different colors.

8. A magnetically induced based in-pipe detector, characterized in that, The method for automatically turning on and displaying the state of a magnetic induction-based pipeline detector according to any one of claims 1-7, the detector comprising: a sealed detector cabin for accommodating an electronic system; at least one Hall switch arranged inside the detector cabin for sensing an external magnetic field and generating an electrical signal; a control unit arranged inside the detector cabin and electrically connected to the Hall switch for processing the electrical signal and controlling the power supply and state display; a magnetic induction display device, part of which is arranged inside the detector cabin and part of which is exposed outside the detector cabin, for displaying the state according to the instruction of the control unit; wherein the Hall switch senses the magnetic field to trigger the control unit to turn on, and the control unit controls the magnetic induction display device to display the state.

9. The magnetic-induction-based in-pipe detector of claim 8, wherein, The magnetic induction display device comprises: a signal driving unit arranged inside the detector cabin and connected to the control unit for generating an alternating magnetic field according to the state indication signal; a state display unit arranged outside the detector cabin and comprising a magnetic sensitive element and a visual indication element, the magnetic sensitive element senses the alternating magnetic field and controls the visual indication element to change the display mode.

10. The magnetic induction based in-pipe detector of claim 9, wherein, The visual indication element is an array of multicolor light-emitting diodes; The display mode includes a constant green color representing normal operation, a flashing yellow color representing a warning state, and a flashing red color representing an abnormal state; The magnetic sensitive element is a reed switch or a Hall element that switches the display mode of the array of multicolor light-emitting diodes according to the sensed magnetic field frequency or polarity.

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