CN109459798A - A kind of concealed wire detector - Google Patents
A kind of concealed wire detector Download PDFInfo
- Publication number
- CN109459798A CN109459798A CN201811451628.8A CN201811451628A CN109459798A CN 109459798 A CN109459798 A CN 109459798A CN 201811451628 A CN201811451628 A CN 201811451628A CN 109459798 A CN109459798 A CN 109459798A
- Authority
- CN
- China
- Prior art keywords
- foot
- feet
- resistance
- power supply
- operational amplifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
- G01V9/005—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00 by thermal methods, e.g. after generation of heat by chemical reactions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Chemical & Material Sciences (AREA)
- Electromagnetism (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a kind of concealed wire detectors, by box body, liquid crystal display, phonetic alarm, transmitting coil, Fresnel Lenses, pyroelectric infrared sensor, receiver, control circuit board composition, utilize the specific location of electromagnetic induction principle and pyroelectric effect principle fusion detection concealed wire, when concealed wire is not powered, periodically variable magnetic field is generated by transmitting coil, periodically variable magnetic field generates eddy electric field in space, and eddy electric field is if encountering conducting wire, it will form eddy current, the change information of the eddy current is detected by receiver, and receiver can shield the magnetic field of transmitting coil generation completely.But it will not shield the magnetic field transmitted from concealed wire；When concealed wire is powered, the location information of energization concealed wire is detected by the principle for the heat that can be generated on pyroelectric infrared sensor and receiver fusion detection electrified wire.And the specific location where concealed wire is shown by liquid crystal display, and provide warning message by phonetic alarm for user.
Description
Technical field
The present invention relates to automatic detection and warning instrument more particularly to a kind of concealed wire detectors.
Background technique
Concealed wire, which refers to, is embedded in route in the slot picked in wall or ground.In order to beautify household, many residents by electric wire,
Cable, telephone wire etc. are embedded in wall or mixed mud floor.However, when these lines need repairing, due to that cannot know it
Specific location, staff drilled along the general direction of line using impact drill and found, the serious overall structure for destroying wall,
Great hidden danger is left to house；Furthermore when resident follows closely iron nail extension object on the wall, the position as where forgeting conducting wire,
When iron nail touches the conducting wire for being connected with electricity, it is easy to happen electric shock accidents.
In the prior art, have the method for following several detection concealed wires: 1. universal metal survey meters are examined using high frequency oscillator
The eddy current of electric wire is surveyed so that it is determined that metal approximate location；2. signal type fault locating instrument, by the way that transmitter is loaded into failure electricity
Line receives transmitting signal with receiving instrument to determine wire position；3. radiography instrument, according to penetrating the ray of wall on egative film
The image conditions of photosensitive formation obtain the approximate location of object within the walls.
But these methods have the defects that it is certain, it may be assumed that 1. universal metal survey meters are low to object resolution within the walls, no
The metals such as live wire within the walls and reinforcing bar can effectively be distinguished；2. signal type fault locating instrument is expensive, bulky, emission part
Part need to access in circuit, belong to the detection for having injury to metope and electric wire；3. radiography instrument is expensive, bulky, hair
The ray of injection has serious radiation injury to periphery crowd.
Summary of the invention
To solve the above-mentioned problems, the purpose of the present invention is to provide a kind of concealed wire detector, electromagnetic induction principle is utilized
With the specific location of pyroelectric effect principle fusion detection concealed wire, when concealed wire is not powered, electromagnetic induction principle detects concealed wire, and concealed wire is logical
When electric, electromagnetic induction principle and pyroelectric effect principle fusion detection concealed wire, and pass through the tool where liquid crystal display display concealed wire
Body position, and warning message is provided by phonetic alarm for user.The present invention can not only detect the concealed wire for having led to electricity, also can
The conducting wire being not powered on is detected, false detection rate is low.
To achieve the above object, a kind of concealed wire detector provided by the invention is achieved in that
A kind of concealed wire detector, is characterized in: including plastic casing, liquid crystal display, phonetic alarm, transmitting coil, Fei Nie
That lens, pyroelectric infrared sensor, receiver, control circuit board, liquid crystal display is embedded at the top of plastic casing, for showing
Detect the specific location of concealed wire, phonetic alarm, transmitting coil, pyroelectric infrared sensor, receiver, control circuit board peace
Inside plastic casing, Fresnel Lenses is embedded in plastic box bottom, and the detection for improving pyroelectric infrared sensor is sensitive
Degree, when detecting concealed wire, phonetic alarm provides warning message for user, and transmitting coil utilizes this for generating electromagnetic field
Induction concealed wire is removed in magnetic field, so that concealed wire is issued magnetic field, and receiver is mounted among transmitting coil, generates whirlpool electricity for detecting conducting wire
Change information, the pyroelectric infrared sensor of stream are mounted on inside Fresnel Lenses, for detecting the concealed wire for having led to electricity, control electricity
Road plate for receiving pyroelectric infrared sensor, the concealed wire information that receiver detects, and control liquid crystal display, audio alert
Device provides warning message.
The present invention utilizes the specific location of electromagnetic induction principle and pyroelectric effect principle fusion detection concealed wire, and concealed wire is not powered
When, periodically variable magnetic field is generated by transmitting coil, periodically variable magnetic field generates eddy electric field in space, and is vortexed
Electric field will form eddy current if encountering conducting wire, and the change information of the eddy current, and receiver energy are detected by receiver
The magnetic field of shielding transmitting coil generation completely.But it will not shield the magnetic field transmitted from concealed wire；When concealed wire is powered, pass through infrared heat
The principle for the heat that can be generated on electric transducer and receiver fusion detection electrified wire is released to detect the position letter of energization concealed wire
Breath.
Control circuit board control pyroelectric infrared sensor of the invention preferentially detects, when pyroelectric infrared sensor detects
When to heat source, then control transmitting coil and receiver goes to detect whether as concealed wire.
Control circuit board of the invention is equipped with amplifying circuit, magnetic field data Acquisition Circuit, coil oscillating circuit, filtered electrical
Road, A/D conversion circuit, singlechip minimum system circuit are generated by coil oscillating circuit control transmitting coil and are periodically become
The magnetic field of change, the change information and pyroelectric infrared sensor for the conducting wire generation eddy current that receiver will test detect red
External radiation information is sent to amplifying circuit and amplifies processing, and the change information of amplified eddy current and infra-red radiation are believed
Breath is transmitted to filter circuit and is filtered, and is sent to A/D conversion circuit progress analog-to-digital conversion by filtered information and is
Digital signal, and by the digital data transmission of the change information of eddy current and infra-red radiation information to singlechip minimum system circuit
Carry out fusion treatment.
The present invention utilizes the structure of the specific location of electromagnetic induction principle and pyroelectric effect principle fusion detection concealed wire, thus
It is available following the utility model has the advantages that
1. the present invention generates periodically variable magnetic field by transmitting coil, is examined by receiver when concealed wire is not powered
The change information for the eddy current surveyed on conducting wire detects the location information of concealed wire, and the overall structure without destroying wall can both examine
Measure the position where conducting wire.
2. the present invention when concealed wire is powered, passes through meeting on pyroelectric infrared sensor and receiver fusion detection electrified wire
The principle of the heat of generation detects the location information of energization concealed wire, and the electromagnetic field for effectively preventing electrified wire from generating is to reception
Device causes erroneous detection.
3. the present invention shows the specific location where concealed wire by liquid crystal display, and is mentioned by phonetic alarm for user
For warning message, when can effectively reduce resident and following closely iron nail on the wall and hang object, position as where forgeting conducting wire and send out
Raw electric shock accidents.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the installation for the concealed wire detector that one embodiment of the invention provides；
Fig. 2 is the detection faces schematic diagram for the concealed wire detector that one embodiment of the invention provides；
Fig. 3 is the working principle diagram for the concealed wire detector that one embodiment of the invention provides；
Fig. 4 is the transmitting coil oscillating circuit figure for the concealed wire detector that one embodiment of the invention provides；
Fig. 5 is the acceptor circuit figure for the concealed wire detector that one embodiment of the invention provides；
Fig. 6 is amplifying circuit, filter circuit, the A/D conversion circuit figure for the concealed wire detector that one embodiment of the invention provides；
Fig. 7 is the singlechip minimum system circuit figure for the concealed wire detector that one embodiment of the invention provides.
Main element symbol description.
| Plastic casing | 1 | Liquid crystal display | 2 |
| Phonetic alarm | 3 | Transmitting coil | 4 |
| Fresnel Lenses | 5 | Pyroelectric infrared sensor | 6 |
| Receiver | 7 | Control circuit board | 8 |
Specific embodiment
Below with reference to embodiment and compares attached drawing invention is further described in detail.
Fig. 1 to 7 is please referred to, one of one embodiment of the invention concealed wire detector, including box body 1, liquid crystal are shown
Display screen 2, phonetic alarm 3, transmitting coil 4, Fresnel Lenses 5, pyroelectric infrared sensor 6, receiver 7, control circuit board
8, wherein box body 1 specifically uses plastic box body 1.
As shown in Figure 1, the liquid crystal display 2 is embedded in 1 top of plastic casing, the specific of concealed wire is detected for showing
Position, phonetic alarm 3, transmitting coil 4, pyroelectric infrared sensor 6, receiver 7, control circuit board 8 are mounted on plastic casing 1
Inside, Fresnel Lenses 5 are embedded in 1 bottom of plastic casing and work as spy for improving the detectivity of pyroelectric infrared sensor 6
When measuring concealed wire, phonetic alarm 3 provides warning message for user, and transmitting coil 4 is gone for generating electromagnetic field using the magnetic field
Incude concealed wire, so that concealed wire is issued magnetic field, and receiver 7 is mounted among transmitting coil 4, generates eddy current for detecting conducting wire
Change information, pyroelectric infrared sensor 6 are mounted on inside Fresnel Lenses 5, for detecting the concealed wire for having led to electricity, control circuit
Plate 8 for receiving pyroelectric infrared sensor 6, the concealed wire information that receiver 7 detects, and control liquid crystal display 2, voice reporting
Alert device 3 provides warning message.
The specific location using electromagnetic induction principle and pyroelectric effect principle fusion detection concealed wire, concealed wire are not powered
When, the electric current of transmitting coil 4 can generate an electromagnetic field, and the polarity in magnetic field is perpendicular to 4 place plane of transmitting coil, whenever electric current
Change direction, the polarity in magnetic field can all change correspondingly, it may be assumed that if transmitting coil is parallel to concealed wire, the direction in magnetic field can not
Disconnectedly alternately change, it is a little while downward perpendicular to concealed wire, a little while again it is upward perpendicular to concealed wire, magnetic direction on concealed wire repeatedly
Variation, it can have an effect with concealed wire, cause concealed wire itself that can also generate faint magnetic field, the transmitting coil 4 of the Weak magentic-field
The polarity in magnetic field is just the opposite, if transmitting coil 4 generate the vertical concealed wire of magnetic direction it is downward, concealed wire magnetic field just perpendicular to
Concealed wire is upward, so, when receiver 7 is located at just above the concealed wire in 4 magnetic field of transmitting coil, will generate on receiver
One faint electric current.The change information of the electric current is detected by receiver 7, and receiver 7 can shield the production of transmitting coil 4 completely
Raw magnetic field.But it will not shield the magnetic field transmitted from concealed wire；When concealed wire is powered, by pyroelectric infrared sensor 6 and receive
Device fusion detects the principle for the heat that can be generated on electrified wire to detect the location information of energization concealed wire.
The control circuit board 8 controls pyroelectric infrared sensor 6 and preferentially detects, when pyroelectric infrared sensor 6 is examined
When measuring heat source, then control transmitting coil 4 and receiver 7 goes to detect whether can effectively prevent other heat sources to red for concealed wire
Outer pyroelectric sensor 6, external electromagnetic field interfere receiver 7.
The liquid crystal display 2 uses 12864 liquid crystal displays.
The phonetic alarm 3 uses buzzer.
As shown in figure 3, the control circuit board 8 is equipped with amplifying circuit, magnetic field data Acquisition Circuit, coil oscillation electricity
Road, filter circuit, A/D conversion circuit, singlechip minimum system circuit, wherein the circuit of receiver 7 is magnetic field data acquisition
Circuit generates periodically variable magnetic field by coil oscillating circuit control transmitting coil 4, and magnetic field data Acquisition Circuit will test
Conducting wire generate the change information of eddy current and the infra-red radiation information that detects of pyroelectric infrared sensor 6 is sent to amplification electricity
Road amplifies processing, and the change information of amplified eddy current and infra-red radiation information are transmitted to filter circuit and filtered
Wave processing, being sent to A/D conversion circuit to carry out analog-to-digital conversion by filtered information is digital signal, and by the change of eddy current
The digital data transmission for changing information and infra-red radiation information carries out fusion treatment to singlechip minimum system circuit.
The coil oscillating circuit includes the first LM359 dual operational amplifier U1, first diode D1, the 1-11st electricity
Resistance: R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, the 1-5th capacitor: C1, C2, C3, C4, C5, three pole of first crystal
Pipe Q1, first resistor R1 be connected on 7 foot of the first LM359 dual operational amplifier U1 non-inverting input terminal and 5V regulated power supply VCC it
Between, it is connected on the first LM359 dual operational amplifier U1's with second resistance R2 after first diode D1 is in parallel with the 4th resistance R4
Between 2 foot of 6 foot of reverse input end and signal output end, first capacitor C1 is connected on one end and the 5V regulated power supply of second resistance R2
GND between, 3rd resistor R3 is connected on 12 foot of positive power source terminal and 5V regulated power supply of the first LM359 dual operational amplifier U1
Between VCC, the 5th resistance R5 be connected on the first LM359 dual operational amplifier U1 3 foot of compensating end and 5V regulated power supply VCC it
Between, the 6th resistance R6 is connected between 2 foot of 7 foot of non-inverting input terminal and signal output end of the first LM359 dual operational amplifier U1,
7th resistance R7 is connected on 1 foot of 8 foot of reference signal input terminal and reference signal output end of the first LM359 dual operational amplifier U1
Between, the second capacitor C2 is connected on 2 foot of signal output end and first crystal triode Q1 of the first LM359 dual operational amplifier U1
Base stage between, the 8th resistance R8 is connected between the base stage of first crystal triode Q1 and the VCC of 5V regulated power supply, the 9th electricity
Resistance R9 is connected between the base stage of first crystal triode Q1 and the GND of 5V regulated power supply, and the tenth resistance R10 is connected on the first crystalline substance
Between the collector of body triode Q1 and the VCC of 5V regulated power supply, eleventh resistor R11 and the 5th capacitor C5 are connected in parallel on the first crystalline substance
Between the emitter of body triode Q1 and the GND of 5V regulated power supply, after the 4th capacitor C4 is in parallel with transmitting coil 4 with third capacitor
C3 is connected between the collector of first crystal triode Q1 and the GND of 5V regulated power supply.
The magnetic field data Acquisition Circuit includes the 12-18th resistance R12, R13, R14, R15, R16, R17, R18, the
Two LM358 dual operational amplifier U2, the 3rd LM358 dual operational amplifier U3, UGN3503U linear hall sensor, the two or two pole
Pipe D2, the 18th resistance R18 are connected on the VCC of positive power source terminal 1 foot and 5V regulated power supply of UGN3503U linear hall sensor
Between, 2 foot of negative power end of UGN3503U linear hall sensor meets the GND of 5V regulated power supply, and UGN3503U linear Hall passes
3 foot of signal output end of sensor and 3 foot of non-inverting input terminal of the 2nd LM358 dual operational amplifier U2, twelfth resistor R12 series connection
Between 1 foot of 2 foot of reverse input end and signal output end of the 2nd LM358 dual operational amplifier U2, thirteenth resistor R13 series connection
In 1 foot of signal output end of the 2nd LM358 dual operational amplifier U2 and the signal output end of the 3rd LM358 dual operational amplifier U3
Between 1 foot, the 14th resistance R14 is connected on 1 foot of signal output end and the 3rd LM358 of the 2nd LM358 dual operational amplifier U2
Between 2 foot of reverse input end of dual operational amplifier U3, the second diode D2 and the 15th resistance R15 are connected in reverse parallel in third
Between 1 foot of 2 foot of reverse input end and signal output end of LM358 dual operational amplifier U3, the 16th resistance R16 is connected on third
Between 1 foot of 3 foot of noninverting input and signal output end of LM358 dual operational amplifier U3, the 17th resistance R17 is connected on third
Between 3 foot of noninverting input and the GND of 5V regulated power supply of LM358 dual operational amplifier U3.
The amplifying circuit, filter circuit, A/D conversion circuit include the 4th LM358 dual operational amplifier U4, AD843
Operational amplifier U5, the first LM324 four-operational amplifier U6, the 2nd LM324 four-operational amplifier U7, third diode D3,
Four diode D4, the 19-37th resistance: R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31,
R32, R33, R34, R35, R36, R37, the 6-18th capacitor: C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16,
C17, C18, the first ADC0804 analog-digital converter U8, the 2nd ADC0804 analog-digital converter U9, the electricity of the 19th resistance R19 and the 6th
Hold C6 to be connected in parallel between the power positive end of pyroelectric infrared sensor 6 and the VCC of 5V regulated power supply, the 21st resistance R21
It is connected in parallel between 1 foot of 2 foot of reverse input end and signal output end of the 4th LM358 dual operational amplifier U4 with the 7th capacitor C7,
The signal output end of pyroelectric infrared sensor 6 is connect with 2 foot of reverse input end of the 4th LM358 dual operational amplifier U4, red
The negative power end of outer pyroelectric sensor 6 is connect with the GND of 5V regulated power supply, and the 8th capacitor C8 is connected on the bis- fortune of the 4th LM358
Between 2 foot of reverse input end and the GND of 5V regulated power supply for calculating amplifier U4, it is bis- that the 20th resistance R20 is connected on the 4th LM358
Between 3 foot of non-inverting input terminal and the GND of 5V regulated power supply of operational amplifier U4, one end and the 4th of the 22nd resistance R22
1 foot of signal output end of LM358 dual operational amplifier U4 connects, and the 23rd resistance R23 is connected on the 22nd resistance R22's
Between the other end and 2 foot of reverse input end of the first LM324 four-operational amplifier U6, the 9th capacitor C9 is connected on the 22nd electricity
It hinders between the other end of R22 and the GND of 5V regulated power supply, the 24th resistance R24 is connected on the first LM324 four-operational amplifier
Between 3 foot of non-inverting input terminal and the GND of 5V regulated power supply of U6, the tenth capacitor C10 and the 25th resistance R25 are connected in parallel on first
Between 1 foot of 2 foot of reverse input end and signal output end of LM324 four-operational amplifier U6, the 26th resistance R26 is connected on
Between the signal output end of three LM358 dual operational amplifier U3 and 2 foot of reverse input end of AD843 operational amplifier U5, AD843
3 foot of non-inverting input terminal of operational amplifier U5 is connect with the GND of 5V regulated power supply, and the 11st capacitor C11 is connected on AD843 operation
Between 2 foot of reverse input end and the GND of 5V regulated power supply of amplifier U5, the 27th resistance R27 and the 12nd capacitor C12 are simultaneously
After connection with third diode D3 differential concatenation AD843 operational amplifier U5 2 foot of reverse input end and 1 foot of signal output end it
Between, the 28th resistance R28 and the 29th resistance R29 are connected on 1 foot of signal output end and of AD843 operational amplifier U5
Between 3 foot of non-inverting input terminal of two LM324 four-operational amplifier U7, the 13rd capacitor C13 is connected on tetra- operation of the 2nd LM324 and puts
Between 3 foot of non-inverting input terminal and the GND of 5V regulated power supply of big device U7, the 14th capacitor C14 be connected on 28 resistance R28 with
Between 29th junction resistance R29 and 1 foot of signal output end of the 2nd LM324 four-operational amplifier U7, the 30th resistance
R30 is connected between 2 foot of inverting input terminal and the GND of 5V regulated power supply of the 2nd LM324 four-operational amplifier U7, and the 31st
Resistance R31 and the 4th diode D4 be connected in reverse parallel in the 2nd LM324 four-operational amplifier U7 2 foot of inverting input terminal and signal it is defeated
Between 1 foot of outlet, the 32nd resistance R32 is connected on the positive power source terminal and 5V pressure stabilizing electricity of the first ADC0804 analog-digital converter U8
Between the VCC in source, the 15th capacitor C15 is connected between the VCC and GND of 5V regulated power supply, and the 16th capacitor C16 is connected on
Between 4 foot of clock signal input terminal and the GND of 5V regulated power supply of one ADC0804 analog-digital converter U8, the 33rd resistance R33
It is connected on 4 foot of clock signal input terminal of the first ADC0804 analog-digital converter U8 and the external resistance terminal of internal clock generator
Between 19 feet, the 34th resistance R34 is connected on 9 foot of reference level input terminal and 5V of the first ADC0804 analog-digital converter U8
Between the VCC of regulated power supply, the signal output end and the first ADC0804 analog-digital converter of the first LM324 four-operational amplifier U6
6 foot of input end of analog signal of U8 connects, 7 foot of input end of analog signal, the analog power of the first ADC0804 analog-digital converter U8
8 foot of ground terminal, 10 foot of digital power ground terminal meet the GND of 5V regulated power supply, and the 35th resistance R35 is connected on second
Between the positive power source terminal of ADC0804 analog-digital converter U9 and the VCC of 5V regulated power supply, the 17th capacitor C17 is connected on 5V pressure stabilizing
Between the VCC and GND of power supply, the 18th capacitor C18 is connected on the clock signal input terminal of the 2nd ADC0804 analog-digital converter U9
Between 4 feet and the GND of 5V regulated power supply, the 36th resistance R36 is connected on the clock letter of the 2nd ADC0804 analog-digital converter U9
Number between 4 foot of input terminal and 19 foot of external resistance terminal of internal clock generator, the 34th resistance R37 is connected on second
Between 9 foot of reference level input terminal and the VCC of 5V regulated power supply of ADC0804 analog-digital converter U9, tetra- operation of the 2nd LM324 is put
The signal output end of big device U7 is connect with 6 foot of input end of analog signal of the 2nd ADC0804 analog-digital converter U9, and second
7 foot of input end of analog signal, 8 foot of analog power ground terminal, 10 foot of digital power ground terminal of ADC0804 analog-digital converter U9 connects
The GND of 5V regulated power supply.
The singlechip minimum system circuit includes the first 74HC573 latch U10, the 2nd 74HC573 latch
U11, AT89C51 single-chip microcontroller U12, the 19-21st capacitor C19, C20, C21, the 38-41st resistance R38, R39, R40, R41, second
Transistor Q2, exclusion J, crystal oscillator Y1, reset switch S1,1 foot of three-state enable output end of the first 74HC573 latch U10
The GND of 5V regulated power supply is met with 10 foot of ground terminal, the positive supply termination 5V regulated power supply of the first 74HC573 latch U10
2 foot of data input pin of VCC, the first 74HC573 latch U10,3 feet, 4 feet, 5 feet, 6 feet, 7 feet, 8 feet, 9 feet are respectively with first
18 foot of digital signal output end, 17 feet, 16 feet, 15 feet, 14 feet, 13 feet, 12 feet, 11 feet of ADC0804 analog-digital converter U8 connect
It connects, 19 foot of tri-state latch output, 18 feet, 17 feet, 16 feet, 15 feet, 14 feet, 13 feet, 12 of the first 74HC573 latch U10
Foot is connect with 1 foot of I/O mouth, 2 feet, 3 feet, 4 feet, 5 feet, 6 feet, 7 feet, 8 feet of AT89C51 single-chip microcontroller U12 respectively, and first
Enabled 11 foot of input terminal of the latch of 74HC573 latch U10 is connect with 13 foot of I/O mouth of AT89C51 single-chip microcontroller U12, exclusion J string
The conversion for being associated in the first ADC0804 analog-digital converter U8 finishes interruption and provides 5 foot of end, write signal input terminal 3, read signal input terminal
2, the conversion of chip selection signal input terminal 1, the 2nd ADC0804 analog-digital converter U9 finishes interruption and provides 5 foot of end, write signal input terminal
3, read signal input terminal 2,39 foot of I/O mouth of chip selection signal input terminal 1 and AT89C51 single-chip microcontroller U12,38 feet, 37 feet, 36 feet,
35 feet, 34 feet, 33 feet, between 32 feet, 10 foot of 1 foot of three-state enable output end and ground terminal of the 2nd 74HC573 latch U111
Meet the GND of 5V regulated power supply, the VCC, the 2nd 74HC573 of the positive supply termination 5V regulated power supply of the 2nd 74HC573 latch U11
2 foot of data input pin of latch U11,3 feet, 4 feet, 5 feet, 6 feet, 7 feet, 8 feet, 9 feet respectively with the 2nd ADC0804 analog-to-digital conversion
18 foot of digital signal output end of device U9,17 feet, 16 feet, 15 feet, 14 feet, 13 feet, 12 feet, the connection of 11 feet, the 2nd 74HC573 lock
19 foot of tri-state latch output, 18 feet, 17 feet, 16 feet, 15 feet, 14 feet, 13 feet, 12 feet of storage U11 are mono- with AT89C51 respectively
1 foot of I/O mouth of piece machine U12,2 feet, 3 feet, 4 feet, 5 feet, 6 feet, 7 feet, the connection of 8 feet, the latch of the 2nd 74HC573 latch U11
Enabled 11 foot of input terminal is connect with 12 foot of I/O mouth of AT89C51 single-chip microcontroller U12, and it is mono- that the 19th capacitor C19 is connected on AT89C51
Between 19 foot of external clock leads ends and the GND of 5V regulated power supply of piece machine U12, it is mono- that the 20th capacitor C20 is connected on AT89C51
Between 18 foot of external clock leads ends and the GND of 5V regulated power supply of piece machine U12, crystal oscillator Y1 is connected on AT89C51 single-chip microcontroller U12
18 foot of 19 foot of external clock leads ends and external clock leads ends between, the 38th resistance R38 connects with reset switch S1
It is connected between 9 foot of reset terminal of AT89C51 single-chip microcontroller U12 and the VCC of 5V regulated power supply with the 21st capacitor C21 afterwards,
31 foot of outside access end of AT89C51 single-chip microcontroller U12 meets the VCC of 5V regulated power supply, and the 39th resistance R39 is connected on
9 foot of reset terminal and 20 foot of negative power end of AT89C51 single-chip microcontroller U12 are followed by the GND, AT89C51 single-chip microcontroller U12 of 5V regulated power supply
40 foot of positive power source terminal and exclusion J positive supply termination 5V regulated power supply VCC, the 41st resistance R41 is connected on AT89C51
Between 21 foot of I/O mouth and the base stage of the second transistor Q2 of single-chip microcontroller U12, the 40th resistance R40 is connected on the second crystal
Between the collector of triode Q2 and the VCC of 5V regulated power supply, buzzer be connected on the emitter of the second transistor Q2 with
Between the GND of 5V regulated power supply, 1 foot of power supply ground terminal and 20 foot of backlight electric power cathode of 12864 liquid crystal displays connect 5V pressure stabilizing electricity
The GND in source, positive 19 feet of 17 foot of reset terminal, backlight electric power, 2 foot of power positive end of 12864 liquid crystal displays connect 5V pressure stabilizing electricity
The VCC in source, the 42nd resistance R42 are connected on 3 foot of liquid crystal display contrast adjustable side and the 5V pressure stabilizing of 12864 liquid crystal displays
Between the VCC of power supply, 4 foot of chip select terminal of 12864 liquid crystal displays, read/write select 5 foot of end, 6 foot of enable end, parallel/serial selection end
15 feet, 7 foot of data port end, 8 feet, 9 feet, 10 feet, 11 feet, 12 feet, 13 feet, 14 the feet I/O with AT89C51 single-chip microcontroller U12 respectively
Mouth 15 feet, 16 feet, 14 feet, 17 feet, 23 feet, 24 feet, 25 feet, 26 feet, 27 feet, 28 feet, 10 feet, 11 feet.
The working principle and working process of the present invention is as follows:
As shown in figure 3, using the specific location of electromagnetic induction principle and pyroelectric effect principle fusion detection concealed wire, concealed wire does not have
When energization, periodically variable magnetic field is generated by transmitting coil 4, periodically variable magnetic field generates eddy electric field in space,
And eddy electric field will form eddy current if encountering conducting wire, and the change information of the eddy current is detected by receiver 7, and
Receiver 7 can shield the magnetic field of the generation of transmitting coil 4 completely.But it will not shield the magnetic field transmitted from concealed wire；When concealed wire is powered,
It is powered by the principle for the heat that can be generated on pyroelectric infrared sensor 6 and the fusion detection electrified wire of receiver 7 to detect
The location information of concealed wire；That is: periodically variable magnetic field is generated by coil oscillating circuit control transmitting coil 4, magnetic field data is adopted
The infra-red radiation letter that the conducting wire that collector will test generates the change information of eddy current and pyroelectric infrared sensor 6 detects
Breath is sent to amplifying circuit and amplifies processing, and the change information of amplified eddy current and infra-red radiation information are transmitted to
Filter circuit is filtered, and being sent to A/D conversion circuit to carry out analog-to-digital conversion by filtered information is digital signal,
And the digital data transmission of the change information of eddy current and infra-red radiation information is merged to singlechip minimum system circuit
Processing, when detecting concealed wire, singlechip minimum system circuit controls phonetic alarm 3 and provides warning message for user, and controls
Liquid crystal display 2 processed shows the more specific location information of concealed wire.
Claims (9)
1. a kind of concealed wire detector, is characterized in: saturating including box body, liquid crystal display, phonetic alarm, transmitting coil, Fresnel
Mirror, pyroelectric infrared sensor, receiver, control circuit board, liquid crystal display are embedded at the top of box body, are detected for showing
The specific location of concealed wire, phonetic alarm, transmitting coil, pyroelectric infrared sensor, receiver, control circuit board are mounted on box
Internal portion, Fresnel Lenses are embedded in plastic box bottom, for improving the detectivity of pyroelectric infrared sensor, work as detection
When to concealed wire, phonetic alarm provides warning message for user, and transmitting coil goes to incude for generating electromagnetic field using the magnetic field
Concealed wire makes concealed wire issue magnetic field, and receiver is mounted among transmitting coil, and the variation letter of eddy current is generated for detecting conducting wire
Breath, pyroelectric infrared sensor are mounted on inside Fresnel Lenses, and for detecting the concealed wire for having led to electricity, control circuit board is for connecing
It receives pyroelectric infrared sensor, the concealed wire information that receiver detects, and liquid crystal display, phonetic alarm offer alarm is provided
Information.
2. a kind of concealed wire detector according to claim 1, it is characterised in that: the control circuit board controls infrared thermal releasing
Electric transducer preferentially detects, and when pyroelectric infrared sensor detects heat source, then controls transmitting coil and receiver goes to detect
It whether is concealed wire.
3. a kind of concealed wire detector according to claim 1, it is characterised in that: the control circuit board is equipped with amplification electricity
Road, magnetic field data Acquisition Circuit, coil oscillating circuit, filter circuit, A/D conversion circuit, singlechip minimum system circuit, by line
It encloses oscillating circuit control transmitting coil and generates periodically variable magnetic field, the conducting wire that receiver will test generates the change of eddy current
The infra-red radiation information that change information and pyroelectric infrared sensor detect is sent to amplifying circuit and amplifies processing, and will put
The change information and infra-red radiation information of eddy current after big are transmitted to filter circuit and are filtered, by filtered letter
It is digital signal that breath, which is sent to A/D conversion circuit and carries out analog-to-digital conversion, and by the change information of eddy current and infra-red radiation information
Digital data transmission give singlechip minimum system circuit carry out fusion treatment.
4. a kind of concealed wire detector according to claim 3, it is characterised in that: the coil oscillating circuit includes first
LM359 dual operational amplifier U1, first diode D1, the 1-11st resistance: R1, R2, R3, R4, R5, R6, R7, R8, R9, R10,
R11, the 1-5th capacitor: C1, C2, C3, C4, C5, first crystal triode Q1, first resistor R1 are connected on the bis- fortune of the first LM359
Calculate between 7 foot of amplifier U1 non-inverting input terminal and the VCC of 5V regulated power supply, after first diode D1 is in parallel with the 4th resistance R4 and
Second resistance R2 is connected between 2 foot of 6 foot of reverse input end and signal output end of the first LM359 dual operational amplifier U1, the
One capacitor C1 is connected between one end of second resistance R2 and the GND of 5V regulated power supply, and 3rd resistor R3 is connected on the first LM359
Between 12 foot of positive power source terminal and the VCC of 5V regulated power supply of dual operational amplifier U1, it is bis- that the 5th resistance R5 is connected on the first LM359
Between 3 foot of compensating end and the VCC of 5V regulated power supply of operational amplifier U1, the 6th resistance R6 is connected on the first bis- operations of LM359
Between 2 foot of 7 foot of non-inverting input terminal and signal output end of amplifier U1, the 7th resistance R7 is connected on the first bis- operations of LM359 and puts
Between 1 foot of 8 foot of reference signal input terminal and reference signal output end of big device U1, it is bis- that the second capacitor C2 is connected on the first LM359
Between 2 foot of signal output end of operational amplifier U1 and the base stage of first crystal triode Q1, the 8th resistance R8 is connected on first
Between the base stage of transistor Q1 and the VCC of 5V regulated power supply, the 9th resistance R9 is connected on the base of first crystal triode Q1
Between pole and the GND of 5V regulated power supply, the tenth resistance R10 is connected on the collector and 5V regulated power supply of first crystal triode Q1
VCC between, eleventh resistor R11 and the 5th capacitor C5 are connected in parallel on the emitter and 5V regulated power supply of first crystal triode Q1
GND between, the current collection of first crystal triode Q1 is connected on after the 4th capacitor C4 is in parallel with transmitting coil with third capacitor C3
Between pole and the GND of 5V regulated power supply.
5. a kind of concealed wire detector according to claim 3, it is characterised in that: the magnetic field data Acquisition Circuit includes the
12-18 resistance R12, R13, R14, R15, R16, R17, R18, the 2nd LM358 dual operational amplifier U2, the 3rd bis- operations of LM358
Amplifier U3, UGN3503U linear hall sensor, the second diode D2, it is linear that the 18th resistance R18 is connected on UGN3503U
Between 1 foot of positive power source terminal and the VCC of 5V regulated power supply of Hall sensor, the negative power end of UGN3503U linear hall sensor
2 feet meet the GND of 5V regulated power supply, and 3 foot of signal output end and the 2nd bis- operations of LM358 of UGN3503U linear hall sensor are put
3 foot of non-inverting input terminal of big device U2, twelfth resistor R12 are connected on the reverse input end 2 of the 2nd LM358 dual operational amplifier U2
Between 1 foot of foot and signal output end, thirteenth resistor R13 is connected on the signal output end 1 of the 2nd LM358 dual operational amplifier U2
Between foot and 1 foot of signal output end of the 3rd LM358 dual operational amplifier U3, it is bis- that the 14th resistance R14 is connected on the 2nd LM358
Between 1 foot of signal output end of operational amplifier U2 and 2 foot of reverse input end of the 3rd LM358 dual operational amplifier U3, second
Diode D2 and the 15th resistance R15 is connected in reverse parallel in 2 foot of reverse input end and signal of the 3rd LM358 dual operational amplifier U3
Between 1 foot of output end, the 16th resistance R16 is connected on 3 foot of noninverting input and signal of the 3rd LM358 dual operational amplifier U3
Between 1 foot of output end, the 17th resistance R17 be connected on the 3rd LM358 dual operational amplifier U3 3 foot of noninverting input and 5V it is steady
Between the GND of voltage source.
6. a kind of concealed wire detector according to claim 3, it is characterised in that: the amplifying circuit, filter circuit, A/D
Conversion circuit includes the 4th LM358 dual operational amplifier U4, AD843 operational amplifier U5, the first LM324 four-operational amplifier
U6, the 2nd LM324 four-operational amplifier U7, third diode D3, the 4th diode D4, the 19-37th resistance: R19, R20,
R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R32, R33, R34, R35, R36, R37, the 6-18th electricity
Hold: C6, C7, C8, C9, C10, C11, C12, C13, C14, C15, C16, C17, C18, the first ADC0804 analog-digital converter U8, the
Two ADC0804 analog-digital converter U9, the 19th resistance R19 and the 6th capacitor C6 are being connected in parallel on the power supply of pyroelectric infrared sensor just
Extremely between the VCC of 5V regulated power supply, the 21st resistance R21 and the 7th capacitor C7 is connected in parallel on the 4th bis- operations of LM358 and puts
Between 1 foot of 2 foot of reverse input end and signal output end of big device U4, the signal output end of pyroelectric infrared sensor and the 4th
2 foot of reverse input end of LM358 dual operational amplifier U4 connects, the negative power end and 5V regulated power supply of pyroelectric infrared sensor
GND connection, the 8th capacitor C8 be connected on the 4th LM358 dual operational amplifier U4 2 foot of reverse input end and 5V regulated power supply
GND between, the 20th resistance R20 is connected on 3 foot of non-inverting input terminal and 5V pressure stabilizing electricity of the 4th LM358 dual operational amplifier U4
Between the GND in source, 1 foot of signal output end of one end of the 22nd resistance R22 and the 4th LM358 dual operational amplifier U4 connect
It connects, the 23rd resistance R23 is connected on the anti-of the other end of the 22nd resistance R22 and the first LM324 four-operational amplifier U6
To between 2 foot of input terminal, the 9th capacitor C9 is connected between the other end of the 22nd resistance R22 and the GND of 5V regulated power supply,
24th resistance R24 is connected on the GND of non-inverting input terminal 3 foot and 5V regulated power supply of the first LM324 four-operational amplifier U6
Between, the tenth capacitor C10 and the 25th resistance R25 are connected in parallel on 2 foot of reverse input end of the first LM324 four-operational amplifier U6
Between 1 foot of signal output end, the 26th resistance R26 is connected on the signal output end of the 3rd LM358 dual operational amplifier U3
Between 2 foot of reverse input end of AD843 operational amplifier U5,3 foot of non-inverting input terminal and 5V of AD843 operational amplifier U5 is steady
The GND connection of voltage source, the 11st capacitor C11 are connected on 2 foot of reverse input end and 5V pressure stabilizing electricity of AD843 operational amplifier U5
Between the GND in source, with third diode D3 differential concatenation in AD843 after the 27th resistance R27 is in parallel with the 12nd capacitor C12
Between 1 foot of 2 foot of reverse input end and signal output end of operational amplifier U5, the 28th resistance R28 and the 29th resistance
R29 is connected on 1 foot of signal output end of AD843 operational amplifier U5 and the homophase input of the 2nd LM324 four-operational amplifier U7
It holds between 3 feet, the 13rd capacitor C13 is connected on 3 foot of non-inverting input terminal and 5V pressure stabilizing electricity of the 2nd LM324 four-operational amplifier U7
Between the GND in source, the 14th capacitor C14 is connected on 28 resistance R28 and the 29th junction resistance R29 and second
Between 1 foot of signal output end of LM324 four-operational amplifier U7, the 30th resistance R30 is connected on tetra- operation amplifier of the 2nd LM324
Between 2 foot of inverting input terminal and the GND of 5V regulated power supply of device U7, the 31st resistance R31 and the 4th diode D4 are reversely simultaneously
It is associated between 1 foot of 2 foot of inverting input terminal and signal output end of the 2nd LM324 four-operational amplifier U7, the 32nd resistance R32
It is connected between the positive power source terminal of the first ADC0804 analog-digital converter U8 and the VCC of 5V regulated power supply, the 15th capacitor C15 string
It is associated between the VCC and GND of 5V regulated power supply, the 16th capacitor C16 is connected on the clock of the first ADC0804 analog-digital converter U8
Between 4 foot of signal input part and the GND of 5V regulated power supply, the 33rd resistance R33 is connected on the first ADC0804 analog-digital converter
Between 4 foot of clock signal input terminal of U8 and 19 foot of external resistance terminal of internal clock generator, the series connection of the 34th resistance R34
Between 9 foot of reference level input terminal and the VCC of 5V regulated power supply of the first ADC0804 analog-digital converter U8, the first LM324 tetra-
The signal output end of operational amplifier U6 is connect with 6 foot of input end of analog signal of the first ADC0804 analog-digital converter U8, and first
7 foot of input end of analog signal, 8 foot of analog power ground terminal, 10 foot of digital power ground terminal of ADC0804 analog-digital converter U8 connects
The GND of 5V regulated power supply, the 35th resistance R35 be connected on the 2nd ADC0804 analog-digital converter U9 positive power source terminal and 5V it is steady
Between the VCC of voltage source, the 17th capacitor C17 is connected between the VCC and GND of 5V regulated power supply, the 18th capacitor C18 series connection
Between 4 foot of clock signal input terminal and the GND of 5V regulated power supply of the 2nd ADC0804 analog-digital converter U9, the 36th electricity
Resistance R36 is connected on 4 foot of clock signal input terminal of the 2nd ADC0804 analog-digital converter U9 and the external electricity of internal clock generator
It hinders between 19 foot of end, the 34th resistance R37 is connected on the reference level input terminal 9 of the 2nd ADC0804 analog-digital converter U9
Between foot and the VCC of 5V regulated power supply, the signal output end and the 2nd ADC0804 modulus of the 2nd LM324 four-operational amplifier U7
6 foot of input end of analog signal of converter U9 connects, 7 foot of input end of analog signal, the mould of the 2nd ADC0804 analog-digital converter U9
Quasi- 8 foot of ground-side of power, 10 foot of digital power ground terminal meet the GND of 5V regulated power supply.
7. a kind of concealed wire detector according to claim 3, it is characterised in that: the singlechip minimum system circuit packet
Include the first 74HC573 latch U10, the 2nd 74HC573 latch U11, AT89C51 single-chip microcontroller U12, the 19-21st capacitor C19,
C20, C21, the 38-41st resistance R38, R39, R40, R41, the second transistor Q2, exclusion J, crystal oscillator Y1, reset switch S1,
1 foot of three-state enable output end and 10 foot of ground terminal of first 74HC573 latch U10 meet the GND of 5V regulated power supply, and first
The VCC of the positive supply termination 5V regulated power supply of 74HC573 latch U10, the data input pin 2 of the first 74HC573 latch U10
Foot, 3 feet, 4 feet, 5 feet, 6 feet, 7 feet, 8 feet, 9 the feet digital signal output end 18 with the first ADC0804 analog-digital converter U8 respectively
Foot, 17 feet, 16 feet, 15 feet, 14 feet, 13 feet, 12 feet, the connection of 11 feet, the tri-state of the first 74HC573 latch U10 latch output
Hold 19 feet, 18 feet, 17 feet, 16 feet, 15 feet, 14 feet, 13 feet, 12 feet respectively with 1 foot of I/O mouth of AT89C51 single-chip microcontroller U12,2
Foot, 3 feet, 4 feet, 5 feet, 6 feet, 7 feet, the connection of 8 feet, the latch of the first 74HC573 latch U10 enable 11 foot of input terminal with
13 foot of I/O mouth of AT89C51 single-chip microcontroller U12 connects, and the conversion that exclusion J is connected on the first ADC0804 analog-digital converter U8 finishes
It interrupts and 5 foot of end, write signal input terminal 3, read signal input terminal 2, chip selection signal input terminal 1, the 2nd ADC0804 analog-to-digital conversion is provided
The conversion of device U9 finish interruption provide 5 foot of end, write signal input terminal 3, read signal input terminal 2, chip selection signal input terminal 1 with
39 foot of I/O mouth of AT89C51 single-chip microcontroller U12,38 feet, 37 feet, 36 feet, 35 feet, 34 feet, 33 feet, between 32 feet, second
1 foot of three-state enable output end and 10 foot of ground terminal of 74HC573 latch U111 meet the GND, the 2nd 74HC573 of 5V regulated power supply
The VCC of the positive supply termination 5V regulated power supply of latch U11,2 foot of data input pin of the 2nd 74HC573 latch U11,3 feet,
4 feet, 5 feet, 6 feet, 7 feet, 8 feet, 9 feet respectively with 18 foot of digital signal output end of the 2nd ADC0804 analog-digital converter U9,17
Foot, 16 feet, 15 feet, 14 feet, 13 feet, 12 feet, the connection of 11 feet, the tri-state latch output 19 of the 2nd 74HC573 latch U11
Foot, 18 feet, 17 feet, 16 feet, 15 feet, 14 feet, 13 feet, 12 feet respectively with 1 foot of I/O mouth, 2 feet, 3 of AT89C51 single-chip microcontroller U12
Foot, 4 feet, 5 feet, 6 feet, 7 feet, the connection of 8 feet, the latch of the 2nd 74HC573 latch U11 enable 11 foot of input terminal and AT89C51
12 foot of I/O mouth of single-chip microcontroller U12 connects, and the 19th capacitor C19 is connected on the external clock leads ends of AT89C51 single-chip microcontroller U12
Between 19 feet and the GND of 5V regulated power supply, the 20th capacitor C20 is connected on the external clock leads ends of AT89C51 single-chip microcontroller U12
Between 18 feet and the GND of 5V regulated power supply, crystal oscillator Y1 be connected on 19 foot of external clock leads ends of AT89C51 single-chip microcontroller U12 with
Between 18 foot of external clock leads ends, the 38th resistance R38 connects after connecting with reset switch S1 with the 21st capacitor C21
Between 9 foot of reset terminal and the VCC of 5V regulated power supply of AT89C51 single-chip microcontroller U12, the outside access of AT89C51 single-chip microcontroller U12
31 feet are held to meet the VCC of 5V regulated power supply, the 39th resistance R39 is connected on 9 foot of reset terminal of AT89C51 single-chip microcontroller U12 and bears
20 foot of power end is followed by the GND of 5V regulated power supply, the positive power source terminal of positive power source terminal 40 foot and exclusion J of AT89C51 single-chip microcontroller U12
The VCC of 5V regulated power supply is met, the 41st resistance R41 is connected on 21 foot of I/O mouth and the second crystal of AT89C51 single-chip microcontroller U12
Between the base stage of triode Q2, the 40th resistance R40 is connected on the collector and 5V regulated power supply of the second transistor Q2
Between VCC, buzzer is connected between the emitter of the second transistor Q2 and the GND of 5V regulated power supply, liquid crystal display
1 foot of power supply ground terminal and 20 foot of backlight electric power cathode connect the GND of 5V regulated power supply, 17 foot of reset terminal of liquid crystal display, backlight
19 foot of positive pole, 2 foot of power positive end meet the VCC of 5V regulated power supply, and the 42nd resistance R42 is connected on liquid crystal display
Between 3 foot of liquid crystal display contrast adjustable side and the VCC of 5V regulated power supply, 4 foot of chip select terminal of liquid crystal display, read/write selection
Hold 5 feet, 6 foot of enable end, parallel/serial 15 foot of selection end, 7 foot of data port end, 8 feet, 9 feet, 10 feet, 11 feet, 12 feet, 13 feet, 14 feet
Respectively with 15 foot of I/O mouth, 16 feet, 14 feet, 17 feet, 23 feet, 24 feet, 25 feet, 26 feet, 27 feet, 28 of AT89C51 single-chip microcontroller U12
Foot, 10 feet, 11 feet.
8. a kind of concealed wire detector according to claim 1, it is characterised in that: the liquid crystal display uses 12864
Liquid crystal display.
9. a kind of concealed wire detector according to claim 1, it is characterised in that: the phonetic alarm uses buzzing
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811451628.8A CN109459798A (en) | 2018-11-30 | 2018-11-30 | A kind of concealed wire detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811451628.8A CN109459798A (en) | 2018-11-30 | 2018-11-30 | A kind of concealed wire detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109459798A true CN109459798A (en) | 2019-03-12 |
Family
ID=65612083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811451628.8A Pending CN109459798A (en) | 2018-11-30 | 2018-11-30 | A kind of concealed wire detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109459798A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110806525A (en) * | 2019-10-11 | 2020-02-18 | 沈阳化工大学 | Aging detection system for concealed engineering power line |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441023A (en) * | 1981-07-29 | 1984-04-03 | Eltec Instruments, Inc. | High output differential pyroelectric sensor |
| JPH10281867A (en) * | 1997-04-09 | 1998-10-23 | Matsushita Electric Works Ltd | Pyroelectric infrared detector |
| CN2694270Y (en) * | 2004-03-31 | 2005-04-20 | 中国电子科技集团公司第五十研究所 | Hand-held resoluble metal detector circuit |
| CN101539637A (en) * | 2009-04-08 | 2009-09-23 | 广东工业大学 | Indoor wall-buried wire non-destructive detection instrument |
| CN203587817U (en) * | 2013-11-22 | 2014-05-07 | 南京信息工程大学 | Handheld digital metal detector |
| CN103854404A (en) * | 2014-02-27 | 2014-06-11 | 苏州中崟传感股份有限公司 | Passive infrared detection warning device |
| DE212013000038U1 (en) * | 2013-09-13 | 2014-07-29 | Tianjin Changhe Technology Co. Ltd. | A radio system for temperature control |
| CN104216029A (en) * | 2014-07-30 | 2014-12-17 | 河南科技大学 | Temperature effect based concealed wire detector |
| CN206696449U (en) * | 2017-04-28 | 2017-12-01 | 郁志昂 | Wall hidden line detector |
| CN207799106U (en) * | 2017-12-29 | 2018-08-31 | 重庆远为科技有限责任公司 | Multi-functional domestic electric wire detection device within the walls |
| CN108562641A (en) * | 2018-04-17 | 2018-09-21 | 西南大学 | A kind of cable core material quality detecting device based on current vortex sensor |
-
2018
- 2018-11-30 CN CN201811451628.8A patent/CN109459798A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4441023A (en) * | 1981-07-29 | 1984-04-03 | Eltec Instruments, Inc. | High output differential pyroelectric sensor |
| JPH10281867A (en) * | 1997-04-09 | 1998-10-23 | Matsushita Electric Works Ltd | Pyroelectric infrared detector |
| CN2694270Y (en) * | 2004-03-31 | 2005-04-20 | 中国电子科技集团公司第五十研究所 | Hand-held resoluble metal detector circuit |
| CN101539637A (en) * | 2009-04-08 | 2009-09-23 | 广东工业大学 | Indoor wall-buried wire non-destructive detection instrument |
| DE212013000038U1 (en) * | 2013-09-13 | 2014-07-29 | Tianjin Changhe Technology Co. Ltd. | A radio system for temperature control |
| CN203587817U (en) * | 2013-11-22 | 2014-05-07 | 南京信息工程大学 | Handheld digital metal detector |
| CN103854404A (en) * | 2014-02-27 | 2014-06-11 | 苏州中崟传感股份有限公司 | Passive infrared detection warning device |
| CN104216029A (en) * | 2014-07-30 | 2014-12-17 | 河南科技大学 | Temperature effect based concealed wire detector |
| CN206696449U (en) * | 2017-04-28 | 2017-12-01 | 郁志昂 | Wall hidden line detector |
| CN207799106U (en) * | 2017-12-29 | 2018-08-31 | 重庆远为科技有限责任公司 | Multi-functional domestic electric wire detection device within the walls |
| CN108562641A (en) * | 2018-04-17 | 2018-09-21 | 西南大学 | A kind of cable core material quality detecting device based on current vortex sensor |
Non-Patent Citations (1)
| Title |
|---|
| 何钢: "《检测与控制器件》", 中国轻工业出版社, pages: 72 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110806525A (en) * | 2019-10-11 | 2020-02-18 | 沈阳化工大学 | Aging detection system for concealed engineering power line |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2819239Y (en) | Infrared built-in pipeline detector | |
| CN201311311Y (en) | Groundwater level detecting instrument | |
| CN103742194A (en) | Subsurface source positioning method and mining area illegal mining prevention monitoring system | |
| CN109459798A (en) | A kind of concealed wire detector | |
| BRPI0607998A2 (en) | electromagnetic prospecting system, receiver system for an electromagnetic prospecting system and method for collecting data in an electromagnetic prospecting system | |
| CN106405659A (en) | Automatic door security protection intelligent monitoring method and gas detection method | |
| CN204945396U (en) | A kind of with the multifunctional wall body detection instrument apart from display and level meter | |
| CN209311708U (en) | A kind of concealed wire detector | |
| CN102080976A (en) | Wide-range gas flow detector | |
| CN107782284A (en) | A kind of Dam Deformation Monitoring system | |
| CN206147946U (en) | Vehicle detector | |
| CN208548052U (en) | A kind of shared parking space management system in parking lot | |
| CN208367243U (en) | Life-information survey meter | |
| CN206863122U (en) | Phase angle cable identifier | |
| CN209132433U (en) | A kind of α, beta activity Measurement of surface contamination circuit | |
| CN103064037B (en) | Burglar alarm device based on magnetic field sensor | |
| CN209231532U (en) | A kind of volume body coils formula electromagnetism interference pulse metal detector | |
| CN205608201U (en) | Oil gas pipe -line equipment fixes a position compound sensor | |
| CN107424372A (en) | A kind of Internet of Things safety-protection system | |
| CN203572980U (en) | Water-exploring CT instrument | |
| CN208366422U (en) | Level measurement device based on Na-22 radioactive source | |
| CN206147304U (en) | Automatic door safety precaution intelligent monitoring system | |
| CN108074402A (en) | Vehicle detector | |
| JP4127976B2 (en) | Gas leak detection method | |
| CN207181705U (en) | A kind of nuclear matter pedestrian monitoring system for keeping sensitivity uniformity |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |