CN116719093B - Circuit and method for detecting ground power supply system immersion and entering of living things - Google Patents
Circuit and method for detecting ground power supply system immersion and entering of living things Download PDFInfo
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- 238000007654 immersion Methods 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 206
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- 230000005856 abnormality Effects 0.000 claims abstract description 103
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- 238000012216 screening Methods 0.000 description 3
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- 238000002791 soaking Methods 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/088—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices operating with electric fields
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
- G01F23/266—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors measuring circuits therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/1203—Circuits independent of the type of conversion
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Abstract
The specification provides a circuit and a method for detecting water immersion and living matter entering of a ground power supply system. The circuit at least comprises a first equivalent capacitance polar plate, a second equivalent capacitance polar plate and a detection circuit; the detection circuit at least comprises a square wave generating module, an RC oscillating circuit and an abnormality detection module which are connected in sequence; the abnormality detection module at least comprises a frequency detector; the first equivalent capacitance polar plate is arranged on the bottom of the power supply system and is insulated from the bottom of the power supply system; the second equivalent capacitance polar plate is arranged at a position far away from the bottom of the power supply system; the first equivalent capacitance polar plate and the second equivalent capacitance polar plate are respectively and electrically connected with the cathode and the anode of the RC oscillation circuit; the abnormality detection module acquires and determines whether abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit. Based on the circuit, the abnormality such as water immersion and/or living matter entering inside the power supply system can be accurately and safely automatically detected.
Description
Technical Field
The specification belongs to the technical field of electrical equipment, and particularly relates to a circuit and a method for detecting immersion of a ground power supply system and entry of living things.
Background
Because the power supply system is usually fixed on the ground (ground power supply system), the inside of the power supply system is easy to be immersed, or the power supply system can be mistakenly entered into living things such as mice, snakes and the like, so that the running safety of the power supply system is threatened.
Based on the existing method, most of the water level sensors arranged inside the power supply system are used for detecting the water level inside the power supply system. However, when the method detects the water immersion condition in the power supply system, the detection accuracy is relatively low, and usually relatively more water needs to enter the power supply system, so that the water immersion can be successfully detected after the internal water level reaches a certain height. In addition, the living matter entering the power supply system cannot be effectively detected based on the method.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The specification provides a circuit and a method for detecting water immersion and entering living things of a ground power supply system, which can accurately and safely automatically detect abnormal conditions such as water immersion and/or entering living things in the power supply system.
The ground power supply system immersion detection and living matter entering detection circuit at least comprises a first equivalent capacitance plate, a second equivalent capacitance plate and a corresponding detection circuit; wherein,,
The detection circuit at least comprises a square wave generating module, an RC oscillating circuit and an abnormality detection module which are connected in sequence; the abnormality detection module at least comprises a frequency detector;
the first equivalent capacitance pole plate is arranged on the bottom of the power supply system, and the first equivalent capacitance pole plate is insulated from the bottom of the power supply system;
the second equivalent capacitance polar plate is arranged at a position far away from the bottom of the power supply system;
the first equivalent capacitance polar plate and the second equivalent capacitance polar plate are respectively and electrically connected with the negative electrode and the positive electrode of the RC oscillation circuit;
the abnormality detection module determines whether abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit detected by the frequency detector.
In one embodiment, the abnormality detection module determines whether an abnormality occurs in the power supply system based on the change data of the oscillation frequency of the RC oscillation circuit detected by the frequency detector, and includes:
the abnormality detection module determines that the following abnormality occurs inside the power supply system according to the change data of the oscillation frequency detected by the frequency detector, in the case where it is determined that the oscillation frequency becomes small: the power system is internally immersed in water and/or the power system is internally accessed into living things.
In one embodiment, the anomaly detection module further comprises an operational amplifier; the operational amplifier is electrically connected with the frequency detector.
In one embodiment, the anomaly detection module further comprises: a processing chip; the processing chip is electrically connected with the operational amplifier in the abnormality detection module; the processing chip is used for determining whether the power supply system is abnormal or not according to the amplified change data of the oscillation frequency.
In one embodiment, in the case of determining that an abnormality occurs in the power supply system, the processing chip is further configured to calculate a change characteristic of the oscillation frequency in the current time period according to the amplified change data of the oscillation frequency; and determining the immersion height of the power supply system and/or determining the size of a living matter entering the power supply system according to the change characteristics of the oscillation frequency in the current time period.
In one embodiment, the ground power supply system submergence detection and living matter entry detection circuit of the ground power supply system further comprises a disconnection circuit; the disconnecting circuit is associated with a power supply main loop of the power supply system and is electrically connected with the abnormality detection module; the disconnecting circuit is used for receiving and responding to the abnormal signal sent by the abnormal detection module and disconnecting the power supply main loop of the power supply system; the abnormality detection module is configured to generate the abnormality signal in a case where it is determined that an abnormality occurs inside the power supply system.
In one embodiment, the disconnect circuit includes a relay coil pull-in circuit, and the relay coil pull-in circuit is connected to a switch on a power supply main loop of the power supply system.
In one embodiment, the ground power supply system water immersion detection and living matter entry detection circuit of the ground power supply system water immersion detection and living matter entry detection circuit further comprises a communication module; the communication module is electrically connected with the abnormality detection module; the communication module is used for receiving and responding to the abnormal signal sent by the abnormal detection module and generating abnormal prompt information about the power supply system; and sending the abnormal prompt information to terminal equipment held by the user.
The specification also provides a ground power supply system water immersion detection and living matter entering detection method, which comprises the following steps:
collecting the current oscillation frequency of an RC oscillation circuit in a ground power supply system immersion detection and living matter entering detection circuit of the ground power supply system immersion detection and living matter entering detection circuit;
calculating change data of the oscillation frequency of the RC oscillation circuit according to the current oscillation frequency;
and determining whether an abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit.
In one embodiment, in the event that an abnormality is determined to occur within the power supply system, the method further comprises:
calculating the change characteristic of the oscillation frequency of the current time period according to the change data of the oscillation frequency of the RC oscillation circuit;
and determining the submerging height of the submerging inside the power supply system and/or the size of a living matter entering the power supply system according to the change characteristics of the oscillating frequency in the current time period.
The specification provides a ground power supply system immersion detection and living matter entering detection circuit and method. The ground power supply system immersion detection and living matter entering detection circuit at least comprises a first equivalent capacitance polar plate, a second equivalent capacitance polar plate and a corresponding detection circuit; the detection circuit at least comprises a square wave generating module, an RC oscillating circuit and an abnormality detection module which are sequentially connected; the abnormality detection module at least comprises a frequency detector; specifically, the first equivalent capacitance polar plate is arranged on the bottom of the power supply system and is insulated from the bottom of the power supply system; the second equivalent capacitance polar plate is arranged at a position which is opposite to the first equivalent capacitance polar plate and is away from the bottom of the power supply system by a certain distance; the first equivalent capacitance polar plate and the second equivalent capacitance polar plate are respectively and electrically connected with the cathode and the anode of the RC oscillation circuit. In the implementation process, the abnormality detection module acquires and determines whether abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit detected by the frequency detection. When the ground power supply system submergence detection and the living matter entering detection circuit are based on the ground power supply system submergence detection and the living matter entering detection circuit to perform abnormal detection on the power supply system, the current oscillation frequency of the RC oscillation circuit in the power supply system detection circuit can be collected first; calculating change data of the oscillation frequency of the RC oscillation circuit according to the current oscillation frequency; and determining whether the power supply system is abnormal or not according to the change data of the oscillation frequency of the RC oscillation circuit. Therefore, various abnormal conditions such as water immersion and/or living things entering the power supply system can be accurately and safely automatically detected. And when the abnormality in the power supply system is detected, the power supply main loop of the power supply system is disconnected in time by controlling the disconnection circuit, so that the operation safety of the power supply system is effectively protected. In addition, the detected change data of the oscillation frequency can be amplified, and then the specific immersion height of the immersion inside the power supply system and/or the specific size of a living thing entering the power supply system can be calculated and precisely determined according to the change characteristics of the oscillation frequency in the current time period based on the amplified change data of the oscillation frequency.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure, the drawings that are required for the embodiments will be briefly described below, and the drawings described below are only some embodiments described in the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of the structural components of a ground power system water immersion detection and living matter entry detection circuit provided in one embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a ground power supply system water immersion detection and living matter entry detection circuit according to another embodiment of the present disclosure;
FIG. 3 is a schematic diagram of the structural components of a ground power system water immersion detection and living matter entry detection circuit according to yet another embodiment of the present disclosure;
FIG. 4 is a schematic flow chart of a method for detecting water immersion and detecting living things entering a ground power supply system according to an embodiment of the present disclosure;
FIG. 5 is a schematic diagram of one embodiment of a ground power supply system submergence detection and living matter entry detection circuit as provided by the embodiments of the present disclosure in one example scenario;
FIG. 6 is a schematic diagram of the structural composition of an electronic device provided in one embodiment of the present disclosure;
fig. 7 is a schematic structural diagram of a ground power supply system immersion detection and living matter entry detection device according to an embodiment of the present disclosure.
Detailed Description
In order to make the technical solutions in the present specification better understood by those skilled in the art, the technical solutions in the embodiments of the present specification will be clearly and completely described below with reference to the drawings in the embodiments of the present specification, and it is obvious that the described embodiments are only some embodiments of the present specification, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are intended to be within the scope of the present disclosure.
Referring to fig. 1, an embodiment of the present disclosure provides a ground power supply system immersion detection and living matter entry detection circuit, where the ground power supply system immersion detection and living matter entry detection circuit may include at least a first equivalent capacitance plate, a second equivalent capacitance plate, and corresponding detection circuits and other structures; wherein, in particular,
The detection circuit at least comprises a square wave generating module, an RC oscillating circuit and an abnormality detection module which are sequentially connected; the abnormality detection module at least can comprise a frequency detector and other structures; the frequency detector can be particularly used for detecting and collecting the oscillation frequency of the RC oscillation circuit at any moment;
the first equivalent capacitance plate can be specifically arranged on the bottom of the power supply system, and the first equivalent capacitance plate is insulated from the power supply system;
the second equivalent capacitance plate can be specifically arranged at a position far from the bottom of the power supply system by a certain distance;
the first equivalent capacitance polar plate and the second equivalent capacitance polar plate can be electrically connected with the negative electrode and the positive electrode of the RC oscillation circuit respectively;
the abnormality detection module can specifically determine whether an abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit detected by the frequency detector.
The above power supply system is specifically understood to be a power supply system having an abnormality detection device built therein, and capable of supporting automatic abnormality detection such as flooding and/or entry into living things for the power supply system. Specifically, the above-described power supply system may be a ground power supply system, for example, a power supply cabinet or the like provided on the ground.
Based on the ground power supply system immersion detection and living matter entering detection circuit, the abnormality detection module can acquire the oscillation frequency of the RC oscillation circuit in the ground power supply system immersion detection and living matter entering detection circuit in real time or at fixed time, and calculate the change data of the oscillation frequency; and then according to the change data of the oscillation frequency, the abnormality such as water immersion and/or living matter entering and the like in the power supply system is accurately detected and judged, the sensitivity is higher, the potential safety hazard in the power supply system can be timely found, and the equipment damage caused by the water immersion and/or living matter entering short circuit of the power supply system is avoided.
In some embodiments, the square wave generating module may be a square wave generating circuit.
In some embodiments, the abnormality detection module determines whether an abnormality occurs inside the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit detected by the frequency detector, including:
the abnormality detection module determines that the following abnormality occurs inside the power supply system according to the change data of the oscillation frequency detected by the frequency detector, in the case where it is determined that the oscillation frequency becomes small: the power system is internally immersed in water and/or the power system is internally accessed into living things.
Specifically, referring to fig. 1, the first equivalent capacitance plate may be electrically connected to the negative electrode of the RC oscillation circuit through a wire, to form an equivalent capacitance negative plate; the second equivalent capacitance polar plate can be electrically connected with the positive electrode of the RC oscillation circuit through a lead to form an equivalent capacitance positive plate. In this way, an equivalent capacitance can be formed between the first equivalent capacitance plate and the second equivalent capacitance plate, and the equivalent capacitance can be connected into the RC oscillation circuit.
Therefore, the equivalent capacitance between the first equivalent capacitance plate and the second equivalent capacitance plate satisfies the following relationship: c=εs/4pi kd. Wherein C represents the equivalent capacitance between the first equivalent capacitance plate and the second equivalent capacitance plate, epsilon represents the dielectric constant between the first equivalent capacitance plate and the second equivalent capacitance plate, d represents the distance between the first equivalent capacitance plate and the second equivalent capacitance plate, k represents the electrostatic force constant, and S represents the facing area of the first equivalent capacitance plate and the second equivalent capacitance plate.
Accordingly, the oscillation frequency of the RC oscillation circuit acquired by the frequency detector in the abnormality detection module may be expressed as follows:. Wherein R may represent an equivalent resistance of the RC oscillating circuit. The equivalent resistance may specifically be a fixed value.
Normally, only air exists between the first equivalent capacitance plate and the second equivalent capacitance plate, and the relative dielectric constant of the air is a fixed value close to 1. Meanwhile, the distance between the first equivalent capacitance plate and the second equivalent capacitance plate is also a fixed value. Therefore, the equivalent capacitance between the first equivalent capacitance plate and the second equivalent capacitance plate is also a fixed value. Correspondingly, the oscillation frequency of the RC oscillation circuit acquired by the frequency detector in the abnormality detection module is also a fixed value.
Because the first equivalent capacitance polar plate is arranged on the bottom shell of the power supply system, when the power supply system is immersed in water, water is always present between the first equivalent capacitance polar plate and the second equivalent capacitance polar plate except air, so that the actual dielectric constant between the first equivalent capacitance polar plate and the second equivalent capacitance polar plate is changed, the equivalent capacitance of the RC oscillation circuit is further changed, and finally the oscillation frequency of the acquired RC oscillation circuit is also changed.
Specifically, since the relative dielectric constant of water is 82 and is greater than that of air, the actual dielectric constant between the first equivalent capacitance plate and the second equivalent capacitance plate becomes large, so that the value of the equivalent capacitance becomes large, and finally the value of the oscillation frequency becomes small.
Because the first equivalent capacitance polar plate is arranged on the bottom shell of the power supply system, when living things such as mice and snakes enter the power supply system, the living things can contact the first equivalent capacitance polar plate at high probability, and because the living things can conduct electricity, the actual distance between the first equivalent capacitance polar plate and the second equivalent capacitance polar plate is changed, the equivalent capacitance of the RC oscillating circuit is further changed, and finally the oscillation frequency of the collected RC oscillating circuit is also changed.
Specifically, when the living matter contacts the first equivalent capacitance plate, the actual distance between the first equivalent capacitance plate and the second equivalent capacitance plate becomes smaller, so that the value of the equivalent capacitance becomes larger, and finally the value of the oscillation frequency becomes smaller.
Therefore, the abnormality detection module may determine that the inside of the power supply system is immersed in water and/or that the inside of the power supply system is abnormal such as a living thing, if it is determined that the oscillation frequency becomes small, based on the change data of the oscillation frequency detected by the frequency detector.
In contrast, the abnormality detection module can determine that the inside of the power supply system is not immersed in water or enters a living matter according to the change data of the oscillation frequency detected by the frequency detector under the condition that the oscillation frequency is unchanged, and is in a normal state.
Based on the embodiment, whether the power supply system is immersed in water or not and/or whether a living matter enters or not is detected by constructing and utilizing the equivalent capacitors, so that on one hand, the detection precision and sensitivity can be improved, and on the other hand, the operation safety of the power supply system is improved because the equivalent capacitors are not directly conductive under most conditions.
In some embodiments, the first equivalent capacitance plate and the second equivalent capacitance plate may be copper foil.
In some embodiments, during implementation, copper foil with an area close to the bottom area of the power supply system can be selected as far as possible to serve as the first equivalent capacitance polar plate and the second equivalent capacitance polar plate, so that the bottom of the power supply system can be comprehensively covered, and whether the inside of the power supply system is abnormal or not can be accurately detected.
In some embodiments, the first equivalent capacitance plate and the second equivalent capacitance plate may be specifically disposed in the power supply system at a region adjacent to the gap, so as to more sensitively detect abnormal situations such as water immersion and/or entering into a living matter in the power supply system.
In some embodiments, the first equivalent capacitive plate may be disposed on the bottom of the power supply system in close proximity to the bottom of the power supply system as much as possible to minimize the distance between the first equivalent capacitive plate and the bottom housing of the power supply system. Then, the second equivalent capacitance plate may be disposed at a position opposite to the first equivalent capacitance plate and spaced apart from the first equivalent capacitance plate by a predetermined distance.
In the implementation, the capacitor plate can be arranged under the top of the power supply system as close as possible to the top of the power supply system, so that an equivalent capacitor area formed by the first equivalent capacitor plate and the second equivalent capacitor plate can cover the internal space of the power supply system as much as possible.
In some embodiments, an insulating medium such as a ceramic plate may be disposed between the first equivalent capacitive plate and the bottom of the power system for insulation. The first equivalent capacitance polar plate can be coated with insulating paint, an insulating waterproof layer and the like on the surface close to the bottom of the power supply system for insulation.
Specifically, the negative electrode of the RC oscillating circuit electrically connected to the first equivalent capacitance plate may be Grounded (GND).
Therefore, the first equivalent capacitance polar plate and the bottom of the power supply system can be prevented from generating electricity leakage, and the safety of the power supply system is further improved.
In some embodiments, referring to fig. 2, the anomaly detection module may specifically further include an operational amplifier; the operational amplifier is electrically connected with the frequency detector and is used for amplifying the change data of the oscillation frequency of the RC oscillation circuit detected by the frequency detector.
Specifically, the operational amplifier may be configured to amplify a signal in a circuit. The frequency detector may be a structure for detecting and collecting the frequency of a signal in a circuit, for example, a frequency detection circuit.
In the implementation, the oscillation frequency of the RC oscillation circuit acquired by the frequency detector in the abnormality detection module is firstly transmitted to the dynamic operation amplifier for amplification processing, and the amplified oscillation frequency is obtained. Then, the abnormality detection module may calculate the change data of the oscillation frequency after current amplification according to the oscillation frequency after current amplification and the oscillation frequency after amplification at the previous time. Therefore, the frequency difference value with smaller numerical value among the oscillation frequencies can be effectively prevented from being ignored, and the detection precision and sensitivity are improved.
In some embodiments, referring to fig. 2, the anomaly detection module may specifically further include: a processing chip; the processing chip is electrically connected with the operational amplifier in the abnormality detection module; the processing chip is used for determining whether the power supply system is abnormal or not according to the amplified change data of the oscillation frequency.
The processing chip may be an MCU (Microcontroller Unit, micro control unit) or a main control chip, and can support a certain degree of data processing and instruction execution.
In the specific implementation, the processing chip receives and calculates corresponding change data of the amplified oscillation frequency according to the amplified oscillation frequency output by the operational amplifier; and then accurately determining whether the power supply system is abnormal or not according to the amplified change data of the oscillation frequency.
In some embodiments, when determining that an abnormality occurs in the power supply system, the processing chip may be further configured to calculate a change characteristic of the oscillation frequency in the current time period according to the amplified change data of the oscillation frequency; and determining the immersion height of the power supply system and/or determining the size of a living matter entering the power supply system according to the change characteristics of the oscillation frequency in the current time period.
The current time period may be understood as a smaller current time period. For example, currently within 1 minute.
The above-described characteristic of the change in the oscillation frequency of the current period may include, in particular, one or more of the following listed characteristics: maximum value of oscillation frequency in the current period, minimum value of oscillation frequency in the current period, instantaneous variation amplitude of oscillation frequency in the current period, variation average value of oscillation frequency in the current period, slope of variation curve of oscillation frequency in the current period, and the like.
When the method is implemented, the processing chip can distinguish whether the power supply system is immersed in water or enters a living matter in the power supply system according to the change characteristics of the oscillation frequency in the current time period; further, the specific immersion height of the immersion inside the power supply system and/or the specific size of the living matter entering the power supply system can be determined finely according to the change characteristics of the oscillation frequency in the current time period.
In some embodiments, before implementation, the ground power system immersion detection and living matter entry detection circuit of the ground power system immersion detection and living matter entry detection circuit may be used to perform a large number of immersion tests and living matter entry tests, respectively, to collect and obtain change data of oscillation frequencies under a plurality of different conditions, as a plurality of test data. And grouping the plurality of test data to obtain a test data set of the water immersion test and a test data set of the entering living matter test. Then according to the test data set of the soaking test, extracting to obtain a corresponding first change characteristic set; and simultaneously, extracting a corresponding second change characteristic set according to the test data set entering the living matter test. Performing feature clustering on the first change feature group to obtain a first change feature clustering result; and carrying out feature group feature distance on the second change feature group to obtain a second change feature clustering result. The first change characteristic clustering result comprises oscillation frequency change characteristics which can indicate soaking and correspond to different soaking heights. The second change feature cluster result comprises an oscillation frequency change feature which can indicate the entering of the living things and corresponds to different sizes of the living things. Cross screening is carried out according to the first change characteristic clustering result and the second change characteristic clustering result, and a first reference characteristic set is obtained by screening out oscillation frequency change characteristics which are independent of living things detection, can indicate water immersion and correspond to different water immersion heights from the first change characteristic clustering result; and meanwhile, screening out oscillation frequency change characteristics which are independent of water immersion detection and can indicate to enter a living matter and correspond to different living matter sizes from a second change characteristic clustering result, and constructing and obtaining a second reference characteristic set.
In the implementation, the processing chip can perform feature matching with the first reference feature set and the second reference feature set according to the change feature of the oscillation frequency in the current time period; determining whether the power supply system is immersed or the power supply system enters a living matter at present according to the matching result; further, the specific immersion height of the interior of the power supply system and/or the specific size of the living matter entering the interior of the power supply system can be determined more precisely according to the matching result.
In some embodiments, referring to fig. 2, the ground power system water immersion detection and living matter entering detection circuit of the ground power system water immersion detection and living matter entering detection circuit may specifically further include an open circuit; the disconnecting circuit is associated with a power supply main loop of the power supply system and is electrically connected with the abnormality detection module; the disconnecting circuit is used for receiving and responding to the abnormal signal sent by the abnormal detection module and disconnecting the power supply main loop of the power supply system; the abnormality detection module is configured to generate the abnormality signal in a case where it is determined that an abnormality occurs inside the power supply system.
Based on the disconnection circuit, the ground power supply system immersion detection and living matter entering detection circuit can automatically disconnect the power supply main loop of the power supply system when the ground power supply system immersion detection and living matter entering detection circuit detects that an abnormality occurs, so as to avoid short circuit occurring in the power supply system and damage to the power supply system, thereby being capable of better protecting the operation safety of the power supply system; meanwhile, the damage to living things which enter the power supply system by mistake can be reduced to a certain extent, and the safety of the living things is protected.
In some embodiments, referring to fig. 2, the disconnection circuit may specifically include a relay coil actuation circuit, and the relay coil actuation circuit is connected to a switch on a power supply main loop of the power supply system.
In particular, when the processing chip in the abnormality detection module determines that an abnormality occurs inside the power supply system, a corresponding abnormality signal may be generated and sent to the relay coil pull-in circuit in the open circuit. The relay coil attracting circuit receives and responds to the abnormal signal, and attracts and pulls down a switch on the power supply main loop, so that the effect of automatically cutting off the power supply main loop of the power supply system is achieved.
In addition, a driving circuit composed of a MOS or other switching device may be used as the off circuit.
In some embodiments, referring to fig. 3, the ground power system water immersion detection and living matter entry detection circuit of the ground power system water immersion detection and living matter entry detection circuit may specifically further include a communication module; the communication module is electrically connected with the abnormality detection module; the communication module is used for receiving and responding to the abnormal signal sent by the abnormal detection module and generating abnormal prompt information about the power supply system; and sending the abnormal prompt information to terminal equipment held by the user.
The user may be an operation and maintenance person of the power supply system. The terminal equipment can be electronic equipment such as a mobile phone, a tablet personal computer and the like held by a user.
When the abnormality detection module detects that an abnormality occurs in the power supply system, the abnormality detection module can generate a corresponding abnormality signal and send the generated abnormality signal to the communication module so as to trigger the communication module to generate corresponding abnormality prompt information and touch the abnormality prompt information to a user.
Based on the embodiment, when the ground power supply system water immersion detection and living matter entering detection circuit automatically detects the internal abnormality, the ground power supply system water immersion detection and living matter entering detection circuit can prompt corresponding users in time so as to eliminate the abnormality in time.
In some embodiments, referring to fig. 3, the ground power system water immersion detection and living matter entry detection circuit of the ground power system water immersion detection and living matter entry detection circuit may specifically further include an alarm sounder; the alarm sounder is electrically connected with the abnormality detection module.
In the implementation, the abnormality detection module may further send the generated abnormality signal to the alarm sounder when detecting that an abnormality occurs in the power supply system. The alarm sounder receives and responds to the abnormal signal, and plays an alarm prompt sound outwards to prompt a user that the power supply system has abnormal conditions such as water immersion and/or living things entering and the like, and the abnormal conditions need to be treated in time to eliminate the abnormal conditions.
From the above, the ground power supply system water immersion detection and living matter entering detection circuit provided by the embodiment of the present specification at least comprises a first equivalent capacitance plate, a second equivalent capacitance plate, and a corresponding detection circuit; the detection circuit at least comprises a square wave generating module, an RC oscillating circuit and an abnormality detection module which are connected in sequence; the abnormality detection module at least comprises a frequency detector; the first equivalent capacitance polar plate is arranged on the bottom of the power supply system and is insulated from the bottom of the power supply system; the second equivalent capacitance polar plate is arranged at a position far away from the bottom of the power supply system; the first equivalent capacitance polar plate and the second equivalent capacitance polar plate are respectively and electrically connected with the cathode and the anode of the RC oscillation circuit; the abnormality detection module determines whether abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit. When abnormality detection is carried out based on the power supply system, the current oscillation frequency of the RC oscillation circuit in the power supply system detection circuit is firstly collected; calculating change data of the oscillation frequency of the RC oscillation circuit according to the current oscillation frequency; and determining whether an abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit. Therefore, various abnormal conditions such as water immersion and/or living things entering the power supply system can be accurately and safely automatically detected. And moreover, when the abnormality in the power supply system is detected, the power supply main loop of the power supply system can be timely disconnected, so that the operation safety of the power supply system is effectively protected. In addition, the acquired change data of the oscillation frequency can be amplified, and then the immersion height of the power supply system in which the power supply system is immersed and/or the size of a living matter entering the power supply system can be finely determined based on the amplified change data of the oscillation frequency and calculated according to the change characteristics of the oscillation frequency in the current time period.
Referring to fig. 4, the present disclosure further provides a ground power supply system immersion detection and living matter entry detection method based on the ground power supply system immersion detection and living matter entry detection circuit, which specifically includes the following steps:
s401: collecting the current oscillation frequency of an RC oscillation circuit in a ground power supply system immersion detection and living matter entering detection circuit of the ground power supply system immersion detection and living matter entering detection circuit;
s402: calculating change data of the oscillation frequency of the RC oscillation circuit according to the current oscillation frequency;
s403: and determining whether an abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit.
In some embodiments, referring to fig. 5, in a case where it is determined that an abnormality occurs in the power supply system, the method may further include the following steps when implemented:
s1: calculating the change characteristic of the oscillation frequency of the current time period according to the change data of the oscillation frequency of the RC oscillation circuit;
s2: and determining the submerging height of the submerging inside the power supply system and/or the size of a living matter entering the power supply system according to the change characteristics of the oscillating frequency in the current time period.
In addition, in the implementation, whether the abnormality is caused by the water immersion in the power supply system or the abnormality caused by the living matter entering the power supply system can be finely distinguished according to the change characteristics of the oscillation frequency in the current time period.
The embodiment of the specification also provides an electronic device, including a processor and a memory for storing instructions executable by the processor, where the processor may execute the following steps according to the instructions when the processor is implemented: calculating the change characteristic of the oscillation frequency of the current time period according to the change data of the oscillation frequency of the RC oscillation circuit; and determining the submerging height of the submerging inside the power supply system and/or the size of a living matter entering the power supply system according to the change characteristics of the oscillating frequency in the current time period.
In order to more accurately complete the above instructions, referring to fig. 6, the embodiment of the present disclosure further provides a specific electronic device, where the electronic device includes a detection circuit 601, a processor 602, and a memory 603, and the above structures are connected by an internal cable, so that each structure may perform specific data interaction.
The detection circuit 601 may be specifically configured to collect a current oscillation frequency of an RC oscillation circuit in a ground power system immersion detection and living matter entry detection circuit of the ground power system immersion detection and living matter entry detection circuit.
The processor 602 may be specifically configured to calculate, according to the current oscillation frequency, change data of the oscillation frequency of the RC oscillation circuit; and determining whether an abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit.
The memory 603 may be used for storing a corresponding program of instructions.
In this embodiment, the detection circuit 601 may at least include a square wave generating module, an RC oscillating circuit, and an abnormality detecting module connected in sequence; the anomaly detection module includes at least a frequency detector. The negative electrode and the positive electrode of the RC oscillation circuit are respectively connected with the first equivalent capacitance polar plate and the second equivalent capacitance polar plate; the first equivalent capacitance pole plate is arranged on the bottom of the power supply system, and the first equivalent capacitance pole plate is insulated from the bottom of the power supply system; the second equivalent capacitance plate is arranged at a position far away from the bottom of the power supply system.
In this embodiment, the processor 602 may be implemented in any suitable manner. For example, the processor may take the form of, for example, a microprocessor or processor, and a computer-readable medium storing computer-readable program code (e.g., software or firmware) executable by the (micro) processor, logic gates, switches, an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a programmable logic controller, and an embedded microcontroller, among others. The description is not intended to be limiting.
In this embodiment, the memory 603 may include multiple levels, and in a digital system, the memory may be any memory as long as it can hold binary data; in an integrated circuit, a circuit with a memory function without a physical form is also called a memory, such as a RAM, a FIFO, etc.; in the system, the storage device in physical form is also called a memory, such as a memory bank, a TF card, and the like.
In specific implementation, the electronic device may be disposed in a conventional power supply system, so that the power supply system may automatically detect whether the inside is immersed in water and/or whether the inside is in a living matter or not.
The embodiment of the specification also provides a computer readable storage medium of the ground power system water immersion detection and living matter entry detection method based on the ground power system water immersion detection and living matter entry detection circuit, wherein the computer readable storage medium stores computer program instructions which when executed realize the following steps: collecting the current oscillation frequency of an RC oscillation circuit in a ground power supply system immersion detection and living matter entering detection circuit of the ground power supply system immersion detection and living matter entering detection circuit; calculating change data of the oscillation frequency of the RC oscillation circuit according to the current oscillation frequency; and determining whether an abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit.
In the present embodiment, the storage medium includes, but is not limited to, a random access Memory (Random Access Memory, RAM), a Read-Only Memory (ROM), a Cache (Cache), a Hard Disk (HDD), or a Memory Card (Memory Card). The memory may be used to store computer program instructions. The network communication unit may be an interface for performing network connection communication, which is set in accordance with a standard prescribed by a communication protocol.
In this embodiment, the functions and effects of the program instructions stored in the computer readable storage medium may be explained in comparison with other embodiments, and are not described herein.
Referring to fig. 7, on a software level, the embodiment of the present disclosure further provides a ground power system immersion detection and living matter entry detection device of the ground power system immersion detection and living matter entry detection circuit, where the device may specifically include the following structural modules:
the acquisition module 701 is specifically configured to acquire a current oscillation frequency of an RC oscillation circuit in a ground power system immersion detection and active object entering detection circuit of the ground power system immersion detection and active object entering detection circuit;
The calculating module 702 may be specifically configured to calculate, according to the current oscillation frequency, change data of the oscillation frequency of the RC oscillation circuit;
the determining module 703 may be specifically configured to determine whether an abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit.
In some embodiments, in the case of determining that an abnormality occurs in the power supply system, the determining module 703 may be further configured to calculate a change characteristic of the oscillation frequency in the current time period according to the change data of the oscillation frequency of the RC oscillation circuit when the determining module is specifically implemented; and determining the submerging height of the submerging inside the power supply system and/or the size of a living matter entering the power supply system according to the change characteristics of the oscillating frequency in the current time period.
It should be noted that, the units, devices, or modules described in the above embodiments may be implemented by a computer chip or entity, or may be implemented by a product having a certain function. For convenience of description, the above devices are described as being functionally divided into various modules, respectively. Of course, when the present description is implemented, the functions of each module may be implemented in the same piece or pieces of software and/or hardware, or a module that implements the same function may be implemented by a plurality of sub-modules or a combination of sub-units, or the like. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
From the above, based on the ground power supply system immersion detection and living matter entering detection device of the ground power supply system immersion detection and living matter entering detection circuit provided by the embodiment of the specification, various abnormal conditions such as the immersion and/or entering of living matter inside the power supply system can be accurately and safely automatically detected.
Although the present description provides method operational steps as described in the examples or flowcharts, more or fewer operational steps may be included based on conventional or non-inventive means. The order of steps recited in the embodiments is merely one way of performing the order of steps and does not represent a unique order of execution. When implemented by an apparatus or client product in practice, the methods illustrated in the embodiments or figures may be performed sequentially or in parallel (e.g., in a parallel processor or multi-threaded processing environment, or even in a distributed data processing environment). The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, it is not excluded that additional identical or equivalent elements may be present in a process, method, article, or apparatus that comprises a described element. The terms first, second, etc. are used to denote a name, but not any particular order.
Those skilled in the art will also appreciate that, in addition to implementing the controller in a pure computer readable program code, it is well possible to implement the same functionality by logically programming the method steps such that the controller is in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers, etc. Such a controller can be regarded as a hardware component, and means for implementing various functions included therein can also be regarded as a structure within the hardware component. Or even means for achieving the various functions may be regarded as either software modules implementing the methods or structures within hardware components.
The description may be described in the general context of computer-executable instructions, such as program modules, being executed by a computer. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform particular tasks or implement particular abstract data types. The specification may also be practiced in distributed computing environments where tasks are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules may be located in both local and remote computer-readable storage media including memory storage devices.
From the above description of embodiments, it will be apparent to those skilled in the art that the present description may be implemented in software plus a necessary general hardware platform. Based on such understanding, the technical solutions of the present specification may be embodied essentially in the form of a software product, which may be stored in a storage medium, such as a ROM/RAM, a magnetic disk, an optical disk, etc., and include several instructions to cause a computer device (which may be a personal computer, a mobile terminal, a server, or a network device, etc.) to perform the methods described in the various embodiments or portions of the embodiments of the present specification.
Various embodiments in this specification are described in a progressive manner, and identical or similar parts are all provided for each embodiment, each embodiment focusing on differences from other embodiments. The specification is operational with numerous general purpose or special purpose computer system environments or configurations. For example: personal computers, server computers, hand-held or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set top boxes, programmable electronic devices, network PCs, minicomputers, mainframe computers, distributed computing environments that include any of the above systems or devices, and the like.
Although the present specification has been described by way of example, it will be appreciated by those skilled in the art that there are many variations and modifications to the specification without departing from the spirit of the specification, and it is intended that the appended claims encompass such variations and modifications as do not depart from the spirit of the specification.
Claims (8)
1. The ground power supply system immersion detection and living matter entering detection circuit is characterized by at least comprising a first equivalent capacitance plate, a second equivalent capacitance plate and a corresponding detection circuit; wherein,,
the detection circuit at least comprises a square wave generating module, an RC oscillating circuit and an abnormality detection module which are connected in sequence; the abnormality detection module at least comprises a frequency detector;
the first equivalent capacitance pole plate is arranged on the bottom of the power supply system, and the first equivalent capacitance pole plate is insulated from the bottom of the power supply system;
the second equivalent capacitance polar plate is arranged at a position far away from the bottom of the power supply system;
the first equivalent capacitance polar plate and the second equivalent capacitance polar plate are respectively and electrically connected with the negative electrode and the positive electrode of the RC oscillation circuit;
The abnormality detection module determines whether abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit detected by the frequency detector; the ground power supply system water immersion detection and living matter entering detection circuit further comprises a disconnection circuit; the disconnecting circuit is associated with a power supply main loop of the power supply system and is electrically connected with the abnormality detection module;
the abnormality detection module further comprises an operational amplifier and a processing chip; the operational amplifier is electrically connected with the frequency detector; the processing chip is electrically connected with the operational amplifier; the processing chip is used for determining whether the power supply system is abnormal or not according to the amplified change data of the oscillation frequency.
2. The ground power supply system flooding detection and living matter entering detection circuit according to claim 1, wherein the abnormality detection module determines whether an abnormality occurs inside the power supply system based on the change data of the oscillation frequency of the RC oscillation circuit detected by the frequency detector, comprising:
the abnormality detection module determines that the following abnormality occurs inside the power supply system according to the change data of the oscillation frequency detected by the frequency detector, in the case where it is determined that the oscillation frequency becomes small: the power system is internally immersed in water and/or the power system is internally accessed into living things.
3. The ground power supply system flooding detection and living matter entering detection circuit according to claim 1, wherein the processing chip is further configured to calculate a change characteristic of the oscillation frequency in the current time period according to the amplified change data of the oscillation frequency in case of determining that an abnormality occurs in the power supply system; and determining the immersion height of the power supply system and/or determining the size of a living matter entering the power supply system according to the change characteristics of the oscillation frequency in the current time period.
4. The ground power supply system flooding detection and living matter entering detection circuit according to claim 1, wherein the disconnection circuit is configured to receive and respond to an abnormality signal sent by the abnormality detection module, and disconnect a power supply main loop of the power supply system; the abnormality detection module is configured to generate the abnormality signal in a case where it is determined that an abnormality occurs inside the power supply system.
5. The ground power supply system water immersion detection and living being ingress detection circuit of claim 4 wherein said disconnect circuit comprises a relay coil pull-in circuit and said relay coil pull-in circuit is connected to a switch on a main circuit of said power supply system.
6. The ground power supply system submersion detection and living being entry detection circuit of claim 1, further comprising a communication module; the communication module is electrically connected with the abnormality detection module; the communication module is used for receiving and responding to the abnormal signal sent by the abnormal detection module and generating abnormal prompt information about the power supply system; and sending the abnormal prompt information to terminal equipment held by the user.
7. A ground power supply system water intrusion detection and living matter entry detection method based on the ground power supply system water intrusion detection and living matter entry detection circuit according to any one of claims 1 to 6, characterized by comprising:
collecting the current oscillation frequency of an RC oscillation circuit in a detection circuit of a ground power supply system for water immersion detection and a detection circuit for entering a living matter;
calculating change data of the oscillation frequency of the RC oscillation circuit according to the current oscillation frequency;
and determining whether an abnormality occurs in the power supply system according to the change data of the oscillation frequency of the RC oscillation circuit.
8. The method of claim 7, wherein in the event of a determination that an anomaly has occurred within the power system, the method further comprises:
Calculating the change characteristic of the oscillation frequency of the current time period according to the change data of the oscillation frequency of the RC oscillation circuit;
and determining the submerging height of the submerging inside the power supply system and/or the size of a living matter entering the power supply system according to the change characteristics of the oscillating frequency in the current time period.
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Denomination of invention: Ground power supply system immersion detection and live object entry detection circuit and method Granted publication date: 20231020 Pledgee: Rudong sub branch of Bank of China Ltd. Pledgor: ZHONGTIAN BROADBAND TECHNOLOGY Co.,Ltd. Registration number: Y2024980021410 |
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