CN109188319A - A kind of hand-held alternating current-direct current detection of magnetic field instrument - Google Patents
A kind of hand-held alternating current-direct current detection of magnetic field instrument Download PDFInfo
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- CN109188319A CN109188319A CN201811216079.6A CN201811216079A CN109188319A CN 109188319 A CN109188319 A CN 109188319A CN 201811216079 A CN201811216079 A CN 201811216079A CN 109188319 A CN109188319 A CN 109188319A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/07—Hall effect devices
Abstract
The present invention relates to electric power overhaul equipment technical fields, provide a kind of hand-held alternating current-direct current detection of magnetic field instrument, including encapsulating housing and setting in the intracorporal circuit board of the encapsulating shell；Encapsulating housing is equipped with and is used to indicate whether there is or not the light emitting diode of magnetic field signal and the battery case for installing power supply；Circuit board includes single-chip microcontroller, magnetic field induction sensor and power supply, and magnetic field induction sensor is formed by magnetic field signal for incuding and acquiring coil；Single-chip microcontroller is for analyzing the collected magnetic field signal of magnetic field induction sensor, and when determining that the magnetic field induction sensor sensing arrives corresponding magnetic field signal, generation LED light lights signal, and the LED light of generation is lighted signal and is sent to the light emitting diode；Power supply is used to power for the single-chip microcontroller, magnetic field induction sensor and light emitting diode, and coil fault is accurately positioned and is detected to realize, detection process is quick, improves detection efficiency, reduces the workload of testing staff.
Description
Technical field
The present invention relates to electric power overhaul equipment technical field, specially a kind of hand-held alternating current-direct current detection of magnetic field instrument.
Background technique
Power equipment (power system) includes mainly generating equipment and power supply unit two major classes, generating equipment are mainly
Station boiler, steam turbine, gas turbine, the hydraulic turbine, generator, transformer etc., power supply unit are mainly various voltages etc.
Transmission line of electricity, mutual inductor, the contactor etc. of grade.
In power equipment and power supply unit use process, time for being used with equipment investment and working time it is tired
Long-pending, the devices such as coil in power equipment or power supply unit are easy to appear failure, and when a failure occurs, service personnel needs to line
The fault point of circle is searched and located.
Currently, the detection to coil fault point is mainly realized using the instruments such as traditional voltmeter, ammeter, detection process
It is cumbersome, it takes time and effort, and poor for the positional accuracy of fault point.
Summary of the invention
In order to overcome the defect of the prior art as indicated above, the present inventor has made intensive studies this, is paying
After a large amount of creative works, so as to complete the present invention.
Specifically, the technical problems to be solved by the present invention are: providing a kind of hand-held alternating current-direct current detection of magnetic field instrument, purport
It is solving in the prior art mainly to realize the detection of coil fault point using the instruments such as traditional voltmeter, ammeter, detection
Process is cumbersome, takes time and effort, and the technical problem poor for the positional accuracy of fault point.
In order to solve the above technical problems, the technical scheme is that
A kind of hand-held alternating current-direct current detection of magnetic field instrument, including encapsulating housing and setting are in the intracorporal circuit of the encapsulating shell
Plate；
The encapsulating housing is equipped with and is used to indicate whether there is or not the light emitting diode of magnetic field signal and for installing power supply
Battery case；
The circuit board includes single-chip microcontroller, magnetic field induction sensor and power supply, in which:
The magnetic field induction sensor, connect with the single-chip microcontroller, is formed by magnetic field letter for incuding and acquiring coil
Number, and collected coil magnetic field signal is passed into the single-chip microcontroller；
The single-chip microcontroller is connect with the light emitting diode, for the collected magnetic field of magnetic field induction sensor
Signal is analyzed, and when determining that the magnetic field induction sensor sensing arrives corresponding magnetic field signal, generation LED light lights letter
Number, and the LED light of generation is lighted into signal and is sent to the light emitting diode, failure of the light emitting diode to the coil
State is indicated；
The power supply is connect with the single-chip microcontroller, magnetic field induction sensor and light emitting diode respectively, for for
The single-chip microcontroller, magnetic field induction sensor and light emitting diode power supply.
As an improvement scheme, the light emitting diode includes red light emitting diodes and green LED；
The red light emitting diodes are used to indicate the signal whether there is or not alternating current magnetic field；
The green LED is used to indicate that whether there is or not D.C. magnetic field signals.
As an improvement scheme, the single-chip microcontroller includes magnetic field induction signal receiving module, main control module, first
LED light lights signal generation module and the second LED light lights signal generation module；
Magnetic field induction signal receiving module is adopted for receiving the magnetic field induction sensor from the magnetic field induction sensor
The magnetic field signal that the coil collected is formed；
The main control module is connect with the magnetic field induction signal receiving module, for connecing to the magnetic field induction signal
It receives the magnetic field signal that module receives to be sampled and analyzed, judges the type of the magnetic field signal, the class of the magnetic field signal
Type includes alternating current magnetic field signal and D.C. magnetic field signal；
First LED light lights signal generation module, is connected to the main control module, for determining institute when the main control module
When to state magnetic field signal be D.C. magnetic field signal, generate the first LED light and light signal, wherein it is raw that first LED light lights signal
It is connect at module with the green LED, and first LED light lights signal for driving the green emitting two
Pole pipe is lighted；
Second LED light lights signal generation module, is connected to the main control module, for determining institute when the main control module
When to state magnetic field signal be alternating current magnetic field signal, generate the second LED light and light signal, wherein it is raw that second LED light lights signal
It is connect at module with the red light emitting diodes, and second LED light lights signal for driving the emitting red light two
Pole pipe is lighted.
As an improvement scheme, be additionally provided with three yellow light-emitting diodes on the encapsulating housing, be denoted as respectively
One yellow light-emitting diode, the second yellow light-emitting diode and third yellow light-emitting diode；
Three yellow light-emitting diodes are used to characterize the intensity for the magnetic field signal that the main control module analyzes.
As an improvement scheme, the single-chip microcontroller further include:
Magnetic field intensity signal comparison module, the main control module connection, is used for according to the main control module to described respectively
The sampling and analysis of magnetic field signal, the magnetic field signal that will acquire are compared with pre-stored magnetic field strength referential data,
It obtains present coil and is formed by magnetic field strength, the magnetic field strength includes three grades, is denoted as the first level of field strength, the
Two level of field strength and third level of field strength, wherein first level of field strength corresponds to the first yellow hair
Optical diode is lighted, and second level of field strength corresponds to first yellow light-emitting diode and the second Yellow luminous two pole
It manages while lighting, the third level of field strength corresponds to first yellow light-emitting diode, the second yellow light-emitting diode
It is lighted simultaneously with third yellow light-emitting diode；
Magnetic field intensity signal generation module, respectively with the magnetic field intensity signal comparison module, three it is described Yellow luminous
Diode connection, the present coil for being got according to the magnetic field intensity signal comparison module are formed by magnetic field strength,
The magnetic field intensity signal for driving the yellow light-emitting diode is generated, and the magnetic field intensity signal of generation is delivered to correspondence
The light emitting diode.
As an improvement scheme, a buzzer, the buzzer and the monolithic are additionally provided on the encapsulating housing
Machine connection, for exporting buzzing alarm sound.
As an improvement scheme, the single-chip microcontroller further include:
Buzzerphone generation module is connect with the buzzer and main control module, for getting when the main control module
When the coil is formed by magnetic field signal, the buzzerphone for driving the buzzer is generated, and the buzzing of generation is believed
Number it is sent to the buzzer.
As an improvement scheme, the model STC15W404S of the single-chip microcontroller, the single-chip microcontroller U2 are equipped with pin
P1.0, pin P1.1, pin P2.5, pin P2.4, pin P2.3, pin P2.2, pin P2.1, pin VCC and pin
GND；
The power supply includes lithium battery and voltage conversion chip U1, the lithium battery and the voltage conversion chip U1
Connection, the model B628, the voltage conversion chip U1 of the voltage conversion chip U1 are equipped with pin SW, pin GND, pin
FB, pin NC, pin IN and pin EN；
Model YS49E the Hall sensor U3, the Hall sensor U3 of the magnetic field induction sensor are equipped with stitch
Vin, stitch Gnd and stitch Vout；
The negative pole end of the lithium battery is via the pin IN and pin after single knife switch S1 with the voltage conversion chip U1
EN connection, the positive terminal of the lithium battery are connect with the pin GND of the voltage conversion chip, the positive terminal of the lithium battery with
The first current node is equipped between the pin GND of the voltage conversion chip, the route difference that first current node is drawn
The stitch Gnd of the Hall sensor and the stitch 1 of the buzzer are connected, first current node and the Hall pass
Route between the stitch Gnd of sensor is equipped with the second current node, the route and the list that second current node is drawn
Piece machine U1 pin GND connection is successively arranged on the route between the pin GND of the single-chip microcontroller U1 and second current node
Third current node, the 4th current node, the 5th current node, the 6th current node, the 7th current node and the 8th electric current
Node；
Connect after the route concatenation red diode that 4th current node is drawn with the pin P2.5 of the single-chip microcontroller U1
It connects, is connect after the route concatenation green diode that the 5th current node is drawn with the pin P2.4 of the single-chip microcontroller U1, institute
It is connect after stating route the first green diode of concatenation of the 6th current node extraction with the pin P2.3 of the single-chip microcontroller U1, it is described
The route that 7th current node is drawn is connect after concatenating the second green diode with the pin P2.2 of the single-chip microcontroller U1, and described the
It is connect after the route concatenation third green diode that eight current nodes are drawn with the pin P2.1 of the single-chip microcontroller U1；
The route that the third current node is drawn is sequentially connected in series after resistance R2, resistance R1 and diode D1 and the voltage
Conversion chip U2 pin SW connection is equipped with the 9th current node, the 9th electricity between the diode D1 and the resistance R1
It flows on the connection to the pin VCC of the single-chip microcontroller U2 that node is drawn, the 9th current node and the single-chip microcontroller U2
Pin VCC between route be equipped with the tenth current node, the connection that the tenth current node is drawn to it is described suddenly
The stitch Vin of your sensor U3, the route between the resistance R2 and the resistance R1 is equipped with the 11st current node, described
11st current node draw connection to the voltage conversion chip U1 pin FB；
Route between the stitch 1 of the buzzer and second current node is equipped with the 12nd current node, institute
The route for stating the extraction of the 12nd current node is connect with the stitch Gnd of the Hall sensor U3；
The pin P1.0 of the single-chip microcontroller U1 is connect with the stitch Vout of the Hall sensor U3, stitch P1.1 with it is described
The stitch 2 of buzzer connects.
As an improvement scheme, between the stitch P1.1 of the single-chip microcontroller U2 and the stitch 2 of the buzzer
Equipped with resistance R3；
After lithium battery both ends parallel connection one capacitor C1, the route serial capacitance C2 that the 9th current node is drawn with institute
State the connection of third current node.
In embodiments of the present invention, hand-held alternating current-direct current detection of magnetic field instrument includes encapsulating housing and is arranged in the encapsulating shell
Intracorporal circuit board；Encapsulating housing is equipped with and is used to indicate whether there is or not the light emitting diode of magnetic field signal and for installing power supply
Battery case；Circuit board includes single-chip microcontroller, magnetic field induction sensor and power supply, and magnetic field induction sensor is for incuding and adopting
Collection coil is formed by magnetic field signal；Single-chip microcontroller is used to analyze the collected magnetic field signal of magnetic field induction sensor, when
It when determining the magnetic field induction sensor sensing to corresponding magnetic field signal, generates LED light and lights signal, and by the LED of generation
Lamp lights signal and is sent to the light emitting diode；Power supply is used to be the single-chip microcontroller, magnetic field induction sensor and hair
Optical diode power supply, is accurately positioned and is detected to coil fault to realize, detection process is quick, improves detection efficiency,
Reduce the workload of testing staff.
Detailed description of the invention
Fig. 1 is the structure principle chart of hand-held alternating current-direct current detection of magnetic field instrument provided by the invention；
Fig. 2 is the structural block diagram of single-chip microcontroller provided by the invention；
Fig. 3 is the circuit diagram of circuit board provided by the invention；
Wherein, 1- single-chip microcontroller, 2- magnetic field induction sensor, 3- power supply, 4- red light emitting diodes, 5- green emitting
Diode, 6- magnetic field induction signal receiving module, 7- main control module, the first LED light of 8- light signal generation module, 9- second
LED light lights signal generation module, the first yellow light-emitting diode of 10-, the second yellow light-emitting diode of 11-, 12- third yellow
Light emitting diode, 13- magnetic field intensity signal comparison module, 14- magnetic field intensity signal generation module, 15- buzzer, 16- buzzing
Signal generation module, the first current node of 17-, the second current node of 18-, 19- third current node, the 4th current node of 20-,
The 5th current node of 21-, the 6th current node of 22-, the 7th current node of 23-, the 8th current node of 24-, the 9th electric current section of 25-
Point, the tenth current node of 26-, the 11st current node of 27-, the 12nd current node of 28-.
Specific embodiment
It is described in detail below in conjunction with embodiment of the attached drawing to technical solution of the present invention.Following embodiment is only used for
Clearly illustrate technical solution of the present invention, therefore be only used as example, and cannot be used as a limitation and limit protection model of the invention
It encloses.
Fig. 1 shows the structure principle chart of hand-held alternating current-direct current detection of magnetic field instrument provided in an embodiment of the present invention, in order to just
Part related to the embodiment of the present invention is only gived in explanation, figure.
Hand-held alternating current-direct current detection of magnetic field instrument includes encapsulating housing and is arranged in the intracorporal circuit board of the encapsulating shell, wherein
The hand-held alternating current-direct current detection of magnetic field instrument can be fabricated to rod-shaped structure, easy to carry and use；
The encapsulating housing is equipped with and is used to indicate whether there is or not the light emitting diode of magnetic field signal and for installing power supply 3
Battery case；
The circuit board includes single-chip microcontroller 1, magnetic field induction sensor 2 and power supply 3, in which:
The magnetic field induction sensor 2, connect with the single-chip microcontroller 1, is formed by magnetic field for incuding and acquiring coil
Signal, and collected coil magnetic field signal is passed into the single-chip microcontroller 1；
The single-chip microcontroller 1, connect with the light emitting diode, for the collected magnetic of the magnetic field induction sensor 2
Field signal is analyzed, and when determining that the magnetic field induction sensor 2 senses corresponding magnetic field signal, is generated LED light and is lighted
Signal, and the LED light of generation is lighted into signal and is sent to the light emitting diode, event of the light emitting diode to the coil
Barrier state is indicated；
The power supply 3 is connect with the single-chip microcontroller 1, magnetic field induction sensor 2 and light emitting diode respectively, is used
It powers in for the single-chip microcontroller 1, magnetic field induction sensor 2 and light emitting diode.
Wherein, above-mentioned light emitting diode be used to indicate magnetic field whether there is or not state, such as have magnetic field signal, i.e., coil without therefore
When barrier point, then the light emitting diode is lighted, and when not having magnetic field signal, then light emitting diode is not lighted, in order to further perfect
The function of the hand-held alternating current-direct current detection of magnetic field instrument, is arranged as follows:
Light emitting diode includes red light emitting diodes 4 and green LED 5；
The red light emitting diodes 4 are used to indicate the signal whether there is or not alternating current magnetic field；
The green LED 5 is used to indicate that whether there is or not D.C. magnetic field signals, naturally it is also possible to other colors are used,
This does not have to the limitation present invention.
In this embodiment, as shown in Fig. 2, single-chip microcontroller 1 includes magnetic field induction signal receiving module 6, main control module 7, the
One LED light lights signal generation module 8 and the second LED light lights signal generation module 9；
Magnetic field induction signal receiving module 6, for receiving the magnetic field induction sensor from the magnetic field induction sensor 2
The magnetic field signal that 2 collected coils are formed；
The main control module 7 is connect with the magnetic field induction signal receiving module 6, for the magnetic field induction signal
The magnetic field signal that receiving module 6 receives is sampled and is analyzed, and judges the type of the magnetic field signal, the magnetic field signal
Type includes alternating current magnetic field signal and D.C. magnetic field signal, wherein the main control module 7 is mainly used for sampling magnetic field signal
And analysis, belong to the scope of the prior art, details are not described herein；
First LED light lights signal generation module 8, connect with the main control module 7, for sentencing when the main control module 7
When the fixed magnetic field signal is D.C. magnetic field signal, generates the first LED light and light signal, wherein first LED light lights letter
Number generation module 8 is connect with the green LED 5, and first LED light lights signal for driving the green
Light emitting diode 5 is lighted；
Second LED light lights signal generation module 9, connect with the main control module 7, for sentencing when the main control module 7
When the fixed magnetic field signal is alternating current magnetic field signal, generates the second LED light and light signal, wherein second LED light lights letter
Number generation module 9 is connect with the red light emitting diodes 4, and second LED light lights signal for driving the red
Light emitting diode 4 is lighted.
In this embodiment, it is additionally provided with three yellow light-emitting diodes on the encapsulating housing, is denoted as the first yellow respectively
Light emitting diode 10, the second yellow light-emitting diode 11 and third yellow light-emitting diode 12；
Three yellow light-emitting diodes are used to characterize the intensity for the magnetic field signal that the main control module 7 analyzes, when
The expression of magnetic field strength can also be so realized with more light emitting diodes, details are not described herein.
Accordingly, as shown in connection with fig. 2, the single-chip microcontroller 1 further include:
Magnetic field intensity signal comparison module 13, the main control module 7 connects respectively, for right according to the main control module 7
The sampling and analysis of the magnetic field signal, the magnetic field signal that will acquire are compared with pre-stored magnetic field strength referential data
It is right, it obtains present coil and is formed by magnetic field strength, the magnetic field strength includes three grades, is denoted as first magnetic field strength etc.
Grade, the second level of field strength and third level of field strength, wherein it is yellow that first level of field strength corresponds to described first
Color light emitting diode 10 is lighted, and second level of field strength corresponds to first yellow light-emitting diode 10 and the second yellow
Light emitting diode 11 is lighted simultaneously, and it is yellow that the third level of field strength corresponds to first yellow light-emitting diode 10, second
Color light emitting diode 11 and third yellow light-emitting diode 12 are lighted simultaneously；
Magnetic field intensity signal generation module 14, respectively with 13, three yellow of the magnetic field intensity signal comparison module
Light emitting diode connection, the present coil for being got according to the magnetic field intensity signal comparison module 13 are formed by magnetic field
Intensity generates the magnetic field intensity signal for driving the yellow light-emitting diode, and the magnetic field intensity signal of generation is conveyed
To the corresponding light emitting diode.
In embodiments of the present invention, as shown in connection with fig. 1, a buzzer 15, the buzzing are additionally provided on the encapsulating housing
Device 15 is connect with the single-chip microcontroller 1, for exporting buzzing alarm sound；
As shown in connection with fig. 2, buzzerphone generation module 16 is connect with the buzzer 15 and main control module 7, for working as institute
When stating main control module 7 and getting the coil and be formed by magnetic field signal, generate for driving the buzzing of the buzzer 15 to believe
Number, and the buzzerphone of generation is sent to the buzzer 15.
In embodiments of the present invention, as shown in figure 3, the model STC15W404S of the single-chip microcontroller 1, the single-chip microcontroller
1U2 is equipped with pin P1.0, pin P1.1, pin P2.5, pin P2.4, pin P2.3, pin P2.2, pin P2.1, pin VCC
And pin GND；
The power supply 3 includes lithium battery and voltage conversion chip U1, the lithium battery and the voltage conversion chip
U1 connection, the model B628 of the voltage conversion chip U1, the voltage conversion chip U1 are equipped with pin SW, pin GND, draw
Foot FB, pin NC, pin IN and pin EN；
Model YS49E the Hall sensor U3, the Hall sensor U3 of the magnetic field induction sensor 2 are equipped with stitch
Vin, stitch Gnd and stitch Vout；
The negative pole end of the lithium battery is via the pin IN and pin after single knife switch S1 with the voltage conversion chip U1
EN connection, the positive terminal of the lithium battery are connect with the pin GND of the voltage conversion chip, the positive terminal of the lithium battery with
The first current node 17, the route that first current node 17 is drawn are equipped between the pin GND of the voltage conversion chip
It is separately connected the stitch Gnd of the Hall sensor and the stitch 1 of the buzzer 15, first current node 17 and institute
It states the route between the stitch Gnd of Hall sensor and is equipped with the second current node 18, what second current node 18 was drawn
Route is connect with the single-chip microcontroller 1U1 pin GND, between the pin GND of the single-chip microcontroller 1U1 and second current node 18
Route on be successively arranged third current node 19, the 4th current node 20, the 5th current node 21, the 6th current node 22,
7th current node 23 and the 8th current node 24；
Pin P2.5 after the route concatenation red diode that 4th current node 20 is drawn with the single-chip microcontroller 1U1
It connects, connects after the route concatenation green diode that the 5th current node 21 is drawn with the pin P2.4 of the single-chip microcontroller 1U1
It connects, the pin P2.3 after route the first green diode of concatenation that the 6th current node 22 is drawn with the single-chip microcontroller 1U1
It connects, the pin after route the second green diode of concatenation that the 7th current node 23 is drawn with the single-chip microcontroller 1U1
P2.2 connection is drawn with the single-chip microcontroller 1U1 after the route concatenation third green diode that the 8th current node 24 is drawn
Foot P2.1 connection；
The route that the third current node 19 is drawn is sequentially connected in series after resistance R2, resistance R1 and diode D1 and the electricity
Conversion chip U2 pin SW connection is pressed, equipped with the 9th current node 25 between the diode D1 and the resistance R1, described the
Nine current nodes 25 draw connection to the pin VCC of the single-chip microcontroller 1U2 on, the 9th current node 25 with it is described
Route between the pin VCC of single-chip microcontroller 1U2 is equipped with the tenth current node 26, the route that the tenth current node 26 is drawn
It is connected to the stitch Vin of the Hall sensor U3, the route between the resistance R2 and the resistance R1 is equipped with the 11st
Current node 27, the pin FB of the connection that the 11st current node 27 is drawn to the voltage conversion chip U1；
Route between the stitch 1 of the buzzer 15 and second current node 18 is equipped with the 12nd current node
28, the route that the 12nd current node 28 is drawn is connect with the stitch Gnd of the Hall sensor U3；
The pin P1.0 of the single-chip microcontroller 1U1 is connect with the stitch Vout of the Hall sensor U3, stitch P1.1 and institute
The stitch 2 for stating buzzer 15 connects.
Wherein, resistance R3 is equipped between the stitch P1.1 of the single-chip microcontroller 1U2 and the stitch 2 of the buzzer 15；
After lithium battery both ends parallel connection one capacitor C1, the route serial capacitance C2 that the 9th current node 25 is drawn with
The third current node 19 connects.
In embodiments of the present invention, which uses YS49E linear hall sensor, detection magnetic field strength
Size is spent, through the sampling of single-chip microcontroller 1, analysis, automatic identification is distinguished alternating current-direct current magnetic field, shown respectively by two indicator lights.Simultaneously
Magnetic field strength is divided into 3 grades, is shown with 3 LED light, while with the prompt of 15 sound of the buzzer of 3 kinds of different frequencies.
In embodiments of the present invention, in embodiments of the present invention, hand-held alternating current-direct current detection of magnetic field instrument includes encapsulating housing
With setting in the intracorporal circuit board of the encapsulating shell；Encapsulating housing is equipped with the light emitting diode being used to indicate whether there is or not magnetic field signal
With the battery case for installing power supply 3；Circuit board includes single-chip microcontroller 1, magnetic field induction sensor 2 and power supply 3, magnetic field
Inductive pick-up 2 is formed by magnetic field signal for incuding and acquiring coil；Single-chip microcontroller 1 is for adopting magnetic field induction sensor 2
The magnetic field signal collected is analyzed, and when determining that the magnetic field induction sensor 2 senses corresponding magnetic field signal, is generated
LED light lights signal, and the LED light of generation is lighted signal and is sent to the light emitting diode；Power supply 3 is for being described
Single-chip microcontroller 1, magnetic field induction sensor 2 and light emitting diode power supply, are accurately positioned and are examined to coil fault to realize
It surveys, detection process is quick, improves detection efficiency, reduces the workload of testing staff.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme should all cover within the scope of the claims and the description of the invention.
Claims (9)
1. a kind of hand-held alternating current-direct current detection of magnetic field instrument, which is characterized in that including encapsulating housing and be arranged in the encapsulating housing
Interior circuit board；
The encapsulating housing is equipped with and is used to indicate whether there is or not the light emitting diode of magnetic field signal and the electricity for installing power supply
Pond slot；
The circuit board includes single-chip microcontroller, magnetic field induction sensor and power supply, in which:
The magnetic field induction sensor, connect with the single-chip microcontroller, is formed by magnetic field signal for incuding and acquiring coil, and
Collected coil magnetic field signal is passed into the single-chip microcontroller；
The single-chip microcontroller is connect with the light emitting diode, for the collected magnetic field signal of magnetic field induction sensor
It is analyzed, when determining that the magnetic field induction sensor sensing arrives corresponding magnetic field signal, generation LED light lights signal, and
The LED light of generation is lighted into signal and is sent to the light emitting diode, malfunction of the light emitting diode to the coil
It is indicated；
The power supply is connect with the single-chip microcontroller, magnetic field induction sensor and light emitting diode respectively, for being described
Single-chip microcontroller, magnetic field induction sensor and light emitting diode power supply.
2. hand-held alternating current-direct current detection of magnetic field instrument according to claim 1, which is characterized in that the light emitting diode includes
Red light emitting diodes and green LED；
The red light emitting diodes are used to indicate the signal whether there is or not alternating current magnetic field；
The green LED is used to indicate that whether there is or not D.C. magnetic field signals.
3. hand-held alternating current-direct current detection of magnetic field instrument according to claim 2, which is characterized in that the single-chip microcontroller includes magnetic field
Inductive signal receiving module, main control module, the first LED light light signal generation module and the second LED light lights signal generation
Module；
Magnetic field induction signal receiving module is collected for receiving the magnetic field induction sensor from the magnetic field induction sensor
Coil formed magnetic field signal；
The main control module is connect with the magnetic field induction signal receiving module, for receiving mould to the magnetic field induction signal
The magnetic field signal that block receives is sampled and is analyzed, and judges the type of the magnetic field signal, the type packet of the magnetic field signal
Include alternating current magnetic field signal and D.C. magnetic field signal；
First LED light lights signal generation module, is connected to the main control module, for determining the magnetic when the main control module
When field signal is D.C. magnetic field signal, generates the first LED light and light signal, wherein first LED light lights signal and generates mould
Block is connect with the green LED, and first LED light lights signal for driving the green LED
It lights；
Second LED light lights signal generation module, is connected to the main control module, for determining the magnetic when the main control module
When field signal is alternating current magnetic field signal, generates the second LED light and light signal, wherein second LED light lights signal and generates mould
Block is connect with the red light emitting diodes, and second LED light lights signal for driving the red light emitting diodes
It lights.
4. hand-held alternating current-direct current detection of magnetic field instrument according to claim 3, which is characterized in that also set on the encapsulating housing
There are three yellow light-emitting diodes, are denoted as the first yellow light-emitting diode, the second yellow light-emitting diode and third yellow respectively
Light emitting diode；
Three yellow light-emitting diodes are used to characterize the intensity for the magnetic field signal that the main control module analyzes.
5. hand-held alternating current-direct current detection of magnetic field instrument according to claim 4, which is characterized in that the single-chip microcontroller further include:
Magnetic field intensity signal comparison module, the main control module connection, is used for according to the main control module to the magnetic field respectively
The sampling and analysis of signal, the magnetic field signal that will acquire are compared with pre-stored magnetic field strength referential data, obtain
Present coil is formed by magnetic field strength, and the magnetic field strength includes three grades, is denoted as the first level of field strength, the second magnetic
Field intensity grade and third level of field strength, wherein first level of field strength corresponds to described first Yellow luminous two
Pole pipe is lighted, and second level of field strength corresponds to first yellow light-emitting diode and the second yellow light-emitting diode is same
When light, the third level of field strength corresponds to first yellow light-emitting diode, the second yellow light-emitting diode and
Three yellow light-emitting diodes are lighted simultaneously；
Magnetic field intensity signal generation module, respectively with the magnetic field intensity signal comparison module, three Yellow luminous two poles
Pipe connection, the present coil for being got according to the magnetic field intensity signal comparison module are formed by magnetic field strength, generate
The magnetic field intensity signal of the yellow light-emitting diode is driven, and the magnetic field intensity signal of generation is delivered to corresponding institute
State light emitting diode.
6. hand-held alternating current-direct current detection of magnetic field instrument according to claim 5, which is characterized in that also set on the encapsulating housing
There is a buzzer, the buzzer is connect with the single-chip microcontroller, for exporting buzzing alarm sound.
7. hand-held alternating current-direct current detection of magnetic field instrument according to claim 6, which is characterized in that the single-chip microcontroller further include:
Buzzerphone generation module is connect with the buzzer and main control module, described in getting when the main control module
When coil is formed by magnetic field signal, the buzzerphone for driving the buzzer is generated, and the buzzerphone of generation is sent out
Give the buzzer.
8. hand-held alternating current-direct current detection of magnetic field instrument according to claim 7, which is characterized in that the model of the single-chip microcontroller
STC15W404S, the single-chip microcontroller U2 are equipped with pin P1.0, pin P1.1, pin P2.5, pin P2.4, pin P2.3, pin
P2.2, pin P2.1, pin VCC and pin GND；
The power supply includes lithium battery and voltage conversion chip U1, and the lithium battery and the voltage conversion chip U1 connect
It connects, the model B628, the voltage conversion chip U1 of the voltage conversion chip U1 is equipped with pin SW, pin GND, pin
FB, pin NC, pin I N and pin EN；
The model YS49E Hall sensor U3 of the magnetic field induction sensor, the Hall sensor U3 be equipped with stitch Vi n,
Stitch Gnd and stitch Vout；
The negative pole end of the lithium battery connects via after single knife switch S1 with the pin I N and pin EN of the voltage conversion chip U1
Connect, the positive terminal of the lithium battery is connect with the pin GND of the voltage conversion chip, the positive terminal of the lithium battery with it is described
The first current node is equipped between the pin GND of voltage conversion chip, the route that first current node is drawn is separately connected
The stitch Gnd of the Hall sensor and the stitch 1 of the buzzer, first current node and the Hall sensor
Stitch Gnd between route be equipped with the second current node, the route and the single-chip microcontroller that second current node is drawn
The GND connection of U1 pin is successively arranged third on the route between the pin GND of the single-chip microcontroller U1 and second current node
Current node, the 4th current node, the 5th current node, the 6th current node, the 7th current node and the 8th current node；
It is connect after the route concatenation red diode that 4th current node is drawn with the pin P2.5 of the single-chip microcontroller U1, institute
It is connect after stating the route concatenation green diode of the 5th current node extraction with the pin P2.4 of the single-chip microcontroller U1, the described 6th
The route that current node is drawn is connect after concatenating the first green diode with the pin P2.3 of the single-chip microcontroller U1, the 7th electricity
The route that stream node is drawn is connect after concatenating the second green diode with the pin P2.2 of the single-chip microcontroller U1, the 8th electric current
It is connect after the route concatenation third green diode that node is drawn with the pin P2.1 of the single-chip microcontroller U1；
The route that the third current node is drawn is converted after being sequentially connected in series resistance R2, resistance R1 and diode D1 with the voltage
Chip U2 pin SW connection is equipped with the 9th current node, the 9th electric current section between the diode D1 and the resistance R1
On the connection to the pin VCC of the single-chip microcontroller U2 that point is drawn, the 9th current node is drawn with the single-chip microcontroller U2's
Route between foot VCC is equipped with the tenth current node, and connection to the Hall that the tenth current node is drawn passes
The stitch Vi n of sensor U3, route between the resistance R2 and the resistance R1 are equipped with the 11st current node, and described the
11 current nodes draw connection to the voltage conversion chip U1 pin FB；
Route between the stitch 1 of the buzzer and second current node is equipped with the 12nd current node, and described the
The route that 12 current nodes are drawn is connect with the stitch Gnd of the Hall sensor U3；
The pin P1.0 of the single-chip microcontroller U1 is connect with the stitch Vout of the Hall sensor U3, stitch P1.1 and the buzzing
The stitch 2 of device connects.
9. hand-held alternating current-direct current detection of magnetic field instrument according to claim 8, which is characterized in that the single-chip microcontroller U2's
Resistance R3 is equipped between stitch P1.1 and the stitch 2 of the buzzer；
With described the after lithium battery both ends parallel connection one capacitor C1, the route serial capacitance C2 that the 9th current node is drawn
The connection of three current nodes.
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Cited By (1)
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Application publication date: 20190111 |