CN205880042U - Hum bar electric induction circuit - Google Patents
Hum bar electric induction circuit Download PDFInfo
- Publication number
- CN205880042U CN205880042U CN201620206553.7U CN201620206553U CN205880042U CN 205880042 U CN205880042 U CN 205880042U CN 201620206553 U CN201620206553 U CN 201620206553U CN 205880042 U CN205880042 U CN 205880042U
- Authority
- CN
- China
- Prior art keywords
- circuit
- signal
- mcu
- amplifier
- input
- 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.)
- Active
Links
- 230000006698 induction Effects 0.000 title claims abstract description 34
- 238000012545 processing Methods 0.000 claims abstract description 45
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000004458 analytical method Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- 230000003321 amplification Effects 0.000 abstract description 2
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 abstract 1
- 230000008054 signal transmission Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005314 correlation function Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Landscapes
- Transmitters (AREA)
Abstract
The utility model relates to a hum bar electric induction circuit, including power supply circuit, signal reception circuit, gear control circuit, processing circuit, MCU control circuit, warning circuit and MCU input circuit, MCU control circuit output gear control signal give the gear control circuit, keeps off the selection of position, the gear control circuit is connected with signal reception circuit electricity for controlled access processing circuit's sampling resistor, the signal reception circuit detects the signal of telecommunication, gives processing circuit with the electric signal transmission who detects, the signal of telecommunication that processing circuit received signal receiving circuit detected to carry out behind the filtering amplification transmission and give MCU input circuit, the switching on of control triode, output signal gives MCU control circuit, and MCU control circuit receives MCU input circuit's signal, the electric pressure of analysis and detection's the signal of telecommunication, and control alarm circuit reports to the police. It can be when whether the check out test set be electrified, electric pressure that can also the check out test set.
Description
Technical field
This utility model relates to electrical verification field, particularly relates to a kind of hum bar electric induction circuit.
Background technology
In recent years, along with China's expanding economy, modernization construction as the power industry of lifelines of the national economy has embodied increasing importance, electric energy is as modern society and the important energy thereof, very important effect is played in national economy and people's lives, demand and the dependence of electric power are increased severely by people with day, it is ensured that the safe and reliable operation of electric power system has become as the top priority of electric administrative department.
Electroscope is a kind of to detect that object is the most charged and the instrument of rough estimate carried charge size, it is divided into low pressure electroscope and high voltage electroscope, low pressure electroscope is used for checking voltage-to-ground at 250V and following low voltage electrical equipment, high voltage electroscope is mainly used to the inspection equipment voltage-to-ground high voltage electric equipment at more than 250V, in prior art, high voltage electroscope can only carry out live detection to the equipment of the electric pressure of nominal, and different electric pressures need different electroscopies.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, it is provided that a kind of hum bar electric induction circuit, it is the most charged that it can detect 220V/380V voltage Above Transmission Lines, and can go out charged type and charged grade with automatic distinguishing.
The purpose of this utility model is achieved in that a kind of hum bar electric induction circuit, including power circuit, signal receiving circuit, shift control circuit, signal processing circuit, MCU control circuit, warning circuit and MCU input circuit, described power circuit is for powering to whole device, described MCU control circuit is used for exporting shift control signal to shift control circuit, carry out the selection of gear, and store gear information;Described shift control circuit electrically connects with signal receiving circuit, for controlling to access the sample resistance of signal processing circuit;Described signal receiving circuit is used for detecting the signal of telecommunication, and the signal of telecommunication of detection is passed to signal processing circuit;Described signal processing circuit is for receiving the signal of telecommunication of signal receiving circuit detection, and passes to MCU input circuit after being amplified Filtering Processing, controls the conducting of its audion;Described MCU input circuit is for receiving the signal of telecommunication after signal processing circuit processes, outputs level signals is to MCU control circuit, described MCU control circuit is for receiving the level signal of MCU input circuit output, and the electric pressure of the signal of telecommunication detected according to this level signal and the gear information analysis corresponding with this level signal, and control warning circuit and report to the police.Described MCU control circuit controls gear according to pre-set programs and selects the switch Guan Bi t second successively.T sets according to practical situation.
Described shift control circuit includes that multiple gear selects switch, and multiple gears select switch for controlling to access the sample resistance of signal processing circuit respectively, and each gear selects switch to control its break-make by MCU control circuit respectively.
This hum bar electric induction circuit also includes that automatic detecting switchs J4, one end of described automatic detecting switch J4 is connected with positive source, the other end of automatic detecting switch J4 is connected with the input of signal processing circuit, and described automatic detecting switch J4 controls its break-make by MCU control circuit.
Being connected between described signal processing circuit and the base stage of audion and have self-maintained circuit, described self-maintained circuit, for receiving the signal of telecommunication of signal processing circuit output, is vibrated, and output pulse signal, to the base stage of audion, controls the conducting of audion.
This hum bar electric induction circuit also includes that a buzzer, one end of described buzzer are connected with the emitter stage of audion, and the colelctor electrode of audion is connected with one end of power supply, and the other end of described buzzer is connected with the other end of power supply.
Described MCU input circuit includes audion, and the base stage of described audion, for receiving the signal of telecommunication after signal processing circuit processes, carries out on or off, and outputs level signals is to MCU control circuit.
Described MCU input circuit also includes photoelectrical coupler, the first input end of described photoelectrical coupler is connected with the emitter stage of audion, the colelctor electrode of audion is connected with one end of power supply, second input of described photoelectrical coupler is connected with the other end of power supply, first outfan of described photoelectrical coupler is connected with positive source, and the second outfan of photoelectrical coupler is connected with MCU control circuit.
Described signal processing circuit includes amplifying circuit and frequency selection circuit, described amplifying circuit includes the first amplifier A1, the second amplifier A2, the 3rd amplifier A3, the in-phase input end of described first amplifier A1 is connected with signal receiving circuit, the inverting input of described first amplifier A1 is connected with positive source, the outfan of described first amplifier A1 and the in-phase input end of the second amplifier A2, inverting input connect, and arrange frequency selection circuit between outfan and the in-phase input end of the 3rd amplifier A3 of the second amplifier A2.
Described self-maintained circuit includes the 3rd amplifier A3 and four high guaily unit A4, the inverting input of described 3rd amplifier A3 and one end of the 6th resistance R6 connect, the other end of the 6th resistance R6 is connected with one end, one end of the 3rd electric capacity C3 of the 7th resistance R7 respectively, the other end of the 7th resistance R7 and the outfan of the 3rd amplifier A3 connect, the other end of the 3rd electric capacity C3 and the outfan of four high guaily unit A4 connect, and the outfan of the 3rd amplifier A3 and the in-phase input end of four high guaily unit A4, inverting input connect.The described outfan of four high guaily unit A4 is connected with the base stage of audion.Described frequency selection circuit uses RC frequency selection circuit.
It is provided with commutation diode D1 between outfan and the in-phase input end of the 3rd amplifier A3 of described second amplifier A2.
Described warning circuit uses NV040C speech chip.
Described signal receiving circuit includes that RC detecting circuit and a bar receive dedicated antenna, described RC detecting circuit includes the second sample resistance R2, 3rd sample resistance R3, first electric capacity C1, one end of described second sample resistance R2 respectively with receive dedicated antenna, one end of first electric capacity C1, the input of signal processing circuit connects, the other end ground connection of the first electric capacity C1, the other end of the second sample resistance R2 respectively with one end of the 3rd sample resistance R3, one end of 4th sample resistance R4, third gear position selects one end of switch J3 to connect, the other end of the 3rd sample resistance R3 connects power cathode, the other end of the 4th sample resistance R4 selects switch J2 to connect power cathode through the second gear, third gear position selects the other end of switch J3 to connect power cathode.First gear selects the one end switching J1 unsettled, and the first gear selects the other end of switch J1 to connect power cathode.
The beneficial effects of the utility model are: it is the most charged that the hum bar electric detection means that this utility model provides can detect 220V/380V voltage Above Transmission Lines, and charged type and charged grade can be gone out with automatic distinguishing, respectively 35KV is charged, 10KV is charged and induction charging, it is applicable to situation during electric pressure the unknown of Devices to test, can be widely applied to power equipment or the cable of all electric pressures, this utility model has the features such as the suitability is strong, safe, easy to carry.This utility model is owing to have employed twin-stage amplifying circuit, and highly sensitive and all direct detection components and parts all have employed physical isolation, still has good warning stability in the environment of climate variability, and alarm velocity is fast.
The utility model is described in further detail with detailed description of the invention below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the theory diagram of hum bar electric induction circuit of the present utility model;
Fig. 2 is the circuit diagram of the single-chip microcomputer of hum bar electric induction circuit of the present utility model;
Fig. 3 is the circuit diagram of the shift control circuit of hum bar electric induction circuit of the present utility model;
Fig. 4 is the circuit diagram of the power circuit of hum bar electric induction circuit of the present utility model;
Fig. 5 is the circuit diagram of the warning circuit of hum bar electric induction circuit of the present utility model;
Fig. 6 is the first embodiment (basic circuit) of hum bar electric induction circuit figure of the present utility model;
Fig. 7 is second embodiment (adding self-oscillation) of hum bar electric induction circuit figure of the present utility model;
Fig. 8 is the 3rd embodiment (adding self-oscillation and buzzer) of hum bar electric induction circuit figure of the present utility model;
Fig. 9 is the 4th embodiment (add self-oscillation, buzzer and add light-coupled isolation) of hum bar electric induction circuit figure of the present utility model.
Detailed description of the invention
Specific embodiment 1:
See Fig. 1 to Fig. 6, a kind of hum bar electric induction circuit, including power circuit, signal receiving circuit, shift control circuit, signal processing circuit, MCU control circuit, warning circuit and MCU input circuit, power circuit is for powering to whole device, described MCU control circuit is used for exporting shift control signal to shift control circuit, carry out the selection of gear, and store gear information;Described shift control circuit electrically connects with signal receiving circuit, for controlling to access the sample resistance of signal processing circuit;Described signal receiving circuit is used for detecting the signal of telecommunication, and the signal of telecommunication of detection is passed to signal processing circuit;Described signal processing circuit is for receiving the signal of telecommunication of signal receiving circuit detection, and passes to MCU input circuit after being amplified Filtering Processing, controls the conducting of its first audion Q1;Described MCU input circuit is for receiving the signal of telecommunication after signal processing circuit processes, outputs level signals is to MCU control circuit, described MCU control circuit is for receiving the level signal of MCU input circuit output, and the electric pressure of the signal of telecommunication detected according to this level signal and the gear information analysis corresponding with this level signal, and control warning circuit and report to the police.Described MCU input circuit includes the first audion Q1, and the base stage of described first audion Q1, for receiving the signal of telecommunication after signal processing circuit processes, carries out on or off, and outputs level signals is to MCU control circuit.Described MCU control circuit controls gear according to pre-set programs and selects the switch Guan Bi t second successively.T sets according to practical situation.According to the correlation function that hum bar electric induction circuit is to be realized, the present embodiment selects STM32 single-chip minimum system as MCU control circuit.Minimum system is made up of power circuit, reset circuit, clock circuit, download circuit etc..The single-chip microcomputer model of the present embodiment is STM32F103C8T6.Described warning circuit uses NV040C speech chip.Described warning circuit uses NV040C speech chip.NV040C speech chip is the technical grade OTP speech chip of a applicable factory yield production type.It has low cost, stable performance, many remarkable advantages such as tonequality is high, easy to control, and circuit is simple.NV040C speech chip supports the external power amplifier of DAC, supports to play the chord MIDI music that sound is graceful.In view of volume heat radiation and the problem such as be easy to carry, the present embodiment has selected the heavy-duty battery of small size as power supply.Power circuit includes battery and manostat, and battery 5V voltage is converted to the output of 3.3V voltage by described manostat.
Described shift control circuit includes that multiple gear selects switch, and multiple gears select switch for controlling to access the sample resistance of signal processing circuit respectively, and each gear selects switch to control its break-make by MCU control circuit respectively.The present embodiment is provided with three gears and selects switch, three gears to select switch to be respectively adopted relay J 1, relay J 2, relay J 3.One end of the coil of relay J 1 connects 5V voltage, and the other end of the coil of relay J 1 is connected with the colelctor electrode of second switch pipe Q2, the grounded emitter of second switch pipe Q2, and the base stage of second switch pipe Q2 is connected with single-chip microcomputer.One end of the coil of relay J 2 connects 5V voltage, and the other end of the coil of relay J 2 and the colelctor electrode of the 3rd switching tube Q3 connect, and the grounded emitter of the 3rd switching tube Q3, the base stage of the 3rd switching tube Q3 is connected with single-chip microcomputer.One end of the coil of relay J 3 connects 5V voltage, and the other end of the coil of relay J 3 and the colelctor electrode of the 4th switching tube Q4 connect, and the grounded emitter of the 4th switching tube Q4, the base stage of the 4th switching tube Q4 is connected with single-chip microcomputer.
Described signal receiving circuit includes that RC detecting circuit and a bar receive dedicated antenna, described RC detecting circuit includes the second sample resistance R2, 3rd sample resistance R3, first electric capacity C1, one end of described second sample resistance R2 respectively with receive dedicated antenna, one end of first electric capacity C1, the input of signal processing circuit connects, the other end ground connection of the first electric capacity C1, the other end of the second sample resistance R2 respectively with one end of the 3rd sample resistance R3, one end of 4th sample resistance R4, normally opened contact one end of 3rd relay J 3 connects, the other end of the 3rd sample resistance R3 connects power cathode, the other end of the 4th sample resistance R4 connects power cathode through the normally opened contact of the second relay J 2, the normally opened contact other end of the 3rd relay J 3 connects power cathode.Normally opened contact one end of first relay J 1 is unsettled, and the normally opened contact other end of the first relay J 1 connects power cathode.
This hum bar electric induction circuit also includes that automatic detecting switchs J4, one end of described automatic detecting switch J4 is connected with positive source, the other end of automatic detecting switch J4 is connected with the input of signal processing circuit, and described automatic detecting switch J4 controls its break-make by MCU control circuit.Described automatic detecting switch uses relay J 4.One end of the coil of relay J 4 connects 5V voltage, and the other end of the coil of relay J 4 and the colelctor electrode of the 5th switching tube Q5 connect, and the grounded emitter of the 5th switching tube Q5, the base stage of the 5th switching tube Q5 is connected with single-chip microcomputer.One end of the normally opened contact of relay J 4 is connected with positive source, and the other end of the normally opened contact of relay J 4 is connected with the input of signal processing circuit.
Described signal processing circuit includes amplifying circuit and frequency selection circuit, described amplifying circuit includes the first amplifier A1, the second amplifier A2, the 3rd amplifier A3, the in-phase input end of described first amplifier A1 is connected with signal receiving circuit, the inverting input of described first amplifier A1 is connected with positive source, the outfan of described first amplifier A1 and the in-phase input end of the second amplifier A2, inverting input connect, and arrange frequency selection circuit between outfan and the in-phase input end of the 3rd amplifier A3 of the second amplifier A2.Described frequency selection circuit uses RC frequency selection circuit.It is provided with commutation diode D1 between outfan and the in-phase input end of the 3rd amplifier A3 of described second amplifier A2.The inverting input of the 3rd amplifier A3 is connected with in-phase input end, and the outfan of the 3rd amplifier A3 and the base stage of the first audion Q1 connect.The colelctor electrode of the first audion Q1 is connected with positive source, and the emitter stage of the first audion Q1 is connected with single-chip microcomputer.
In view of data amplifier has the highest common mode rejection ratio, higher input resistance, higher open-loop gain, relatively low offset voltage, offset current, noise and drift etc..We use three amplifier data amplifying circuits.Input impedance is high, and output impedance is low, and imbalance and drift are the least, and amplification is the most adjustable.Frequency selection circuit is for receiving the useful signal in a certain frequency band range, and eliminates high band and the interference of low-frequency range and noise.
Specific embodiment 2:
See Fig. 7, being connected between described signal processing circuit with MCU input circuit and have self-maintained circuit, described self-maintained circuit, for receiving the signal of telecommunication of signal processing circuit output, is vibrated, output pulse signal, to MCU input circuit, controls the conducting of its first audion Q1.Described MCU input circuit is for being received from the pulse signal of excited oscillation circuit output, outputs level signals is to MCU control circuit, described MCU control circuit is for receiving the level signal of MCU input circuit output, and the electric pressure of the signal of telecommunication detected according to this level signal and the gear information analysis corresponding with this level signal, and control warning circuit and report to the police.Described signal processing circuit includes amplifying circuit and frequency selection circuit, described amplifying circuit includes the first amplifier A1, the second amplifier A2, the 3rd amplifier A3, the in-phase input end of described first amplifier A1 is connected with signal receiving circuit, the inverting input of described first amplifier A1 is connected with positive source, the outfan of described first amplifier A1 and the in-phase input end of the second amplifier A2, inverting input connect, and arrange frequency selection circuit between outfan and the in-phase input end of the 3rd amplifier A3 of the second amplifier A2.Described frequency selection circuit uses RC frequency selection circuit.It is provided with commutation diode D1 between outfan and the in-phase input end of the 3rd amplifier A3 of described second amplifier A2.Described self-maintained circuit includes the 3rd amplifier A3 and four high guaily unit A4, the inverting input of described 3rd amplifier A3 and one end of the 6th resistance R6 connect, the other end of the 6th resistance R6 is connected with one end, one end of the 3rd electric capacity C3 of the 7th resistance R7 respectively, the other end of the 7th resistance R7 and the outfan of the 3rd amplifier A3 connect, the other end of the 3rd electric capacity C3 and the outfan of four high guaily unit A4 connect, and the outfan of the 3rd amplifier A3 and the in-phase input end of four high guaily unit A4, inverting input connect.The outfan of described four high guaily unit A4 and the base stage of the first audion Q1 connect.The colelctor electrode of the first audion Q1 is connected with positive source, and the emitter stage of the first audion Q1 is connected with single-chip microcomputer.Other features are identical with specific embodiment 1.
Specific embodiment 3:
Seeing Fig. 8, this hum bar electric induction circuit also includes that a buzzer, one end of described buzzer are connected with the emitter stage of the first audion Q1, and the colelctor electrode of the first audion Q1 is connected with one end of power supply, and the other end of described buzzer is connected with the other end of power supply.Other features are identical with specific embodiment 2.
Specific embodiment 4:
See Fig. 9, described MCU input circuit also includes photoelectrical coupler, the first input end of described photoelectrical coupler and the emitter stage of the first audion Q1 connect, and the colelctor electrode of the first audion Q1 is connected with one end of power supply, and the second input of described photoelectrical coupler is connected with the other end of power supply.First outfan of described photoelectrical coupler is connected with positive source, and the second outfan of photoelectrical coupler is connected with single-chip microcomputer.Other features are identical with specific embodiment 3.
Operation principle of the present utility model:
Antenna detection is to signal, this signal is more weak, need to be amplified through signal processing circuit, rectification, after filtering, entering self-maintained circuit, self-maintained circuit is vibrated, and output pulse signal is to the base stage of audion, control triode ON, buzzer is energized, and input signal is to single-chip microcomputer, Single-chip Controlling alarm device audio alert.
Open detection device, relay J 4, J3, J2, J1 are closed successively by Single-chip Controlling.J1 is as detecting faradic gear, and J2 is the gear as detection 10kV electricity, and J3 is the gear as detection 35kV electricity, and J4 is then automatic detecting gear.
When relay J 4 closes, the sample resistance of access is R2, R3 of series connection, if triode ON, buzzer sends sound, then represent normal circuit operation;If audion is not turned on, buzzer does not rings, then represent circuit and there is fault.
When relay J 3 closes, the sample resistance of access is R2, if triode ON, buzzer sends sound, then represent and detect that electric wire has the voltage of 35kV and more than 35kV;If audion is not turned on, buzzer does not rings, then explanation electric wire is not charged or electrified voltage is less than 35kV.
When relay J 2 closes, the sample resistance of access is to connect with R2 after R4 with R3 parallel connection, if triode ON, buzzer sends sound, then represent and detect that electric wire has the voltage of 10kV and more than 10kV;If audion is not turned on, buzzer does not rings, then explanation electric wire is not charged or electrified voltage is less than 10kV.
When relay J 1 closes, the sample resistance of access is R2, R3 of series connection, if triode ON, buzzer sends sound, then represent and detect that electric wire has induced voltage;If audion is not turned on, buzzer does not rings, then explanation electric wire is not charged.
The monitoring signal of reception is carried out frontal chromatography process by hum bar electric induction circuit, takes out 45-65HZ power frequency component, excludes the interference signal through digital filtering, analyze its signal intensity and grade, reminds staff with the form of voice reading.The hum bar electric induction circuit of the present embodiment the voltage early warning to more than 220V power frequency 45-65HZ, circuit is anti-interference by digital filtering, reliable and stable.
This utility model is not limited solely to above-described embodiment, carries out the technical scheme of few modifications in the case of without departing substantially from technical solutions of the utility model spirit, should fall into protection domain of the present utility model.
Claims (10)
1. a hum bar electric induction circuit, it is characterized in that: include power circuit, signal receiving circuit, shift control circuit, signal processing circuit, MCU control circuit, warning circuit and MCU input circuit, described power circuit is for powering to whole device, described MCU control circuit is used for exporting shift control signal to shift control circuit, carry out the selection of gear, and store gear information;Described shift control circuit electrically connects with signal receiving circuit, for controlling to access the sample resistance of signal processing circuit;Described signal receiving circuit is used for detecting the signal of telecommunication, and the signal of telecommunication of detection is passed to signal processing circuit;Described signal processing circuit is for receiving the signal of telecommunication of signal receiving circuit detection, and passes to MCU input circuit after being amplified Filtering Processing, controls the conducting of its audion;Described MCU input circuit is for receiving the signal of telecommunication after signal processing circuit processes, outputs level signals is to MCU control circuit, described MCU control circuit is for receiving the level signal of MCU input circuit output, and the electric pressure of the signal of telecommunication detected according to this level signal and the gear information analysis corresponding with this level signal, and control warning circuit and report to the police.
Hum bar electric induction circuit the most according to claim 1, it is characterized in that: described shift control circuit includes that multiple gear selects switch, multiple gears select switch for controlling to access the sample resistance of signal processing circuit respectively, and each gear selects switch to control its break-make by MCU control circuit respectively.
Hum bar electric induction circuit the most according to claim 1, it is characterized in that: also include that automatic detecting switchs (J4), one end of described automatic detecting switch (J4) is connected with positive source, the other end of automatic detecting switch (J4) is connected with the input of signal processing circuit, and described automatic detecting switch (J4) controls its break-make by MCU control circuit.
Hum bar electric induction circuit the most according to claim 1, it is characterized in that: being connected between described signal processing circuit with MCU input circuit has self-maintained circuit, described self-maintained circuit is for receiving the signal of telecommunication of signal processing circuit output, vibrate, output pulse signal, to MCU input circuit, controls the conducting of its audion.
Hum bar electric induction circuit the most according to claim 4, it is characterized in that: also include a buzzer, one end of described buzzer is connected with the emitter stage of audion, and the colelctor electrode of audion is connected with one end of power supply, and the other end of described buzzer is connected with the other end of power supply.
6. according to the hum bar electric induction circuit described in claim 1 or 4 or 5, it is characterized in that: described MCU input circuit also includes photoelectrical coupler, the first input end of described photoelectrical coupler is connected with the emitter stage of audion, the colelctor electrode of audion is connected with one end of power supply, second input of described photoelectrical coupler is connected with the other end of power supply, first outfan of described photoelectrical coupler is connected with positive source, and the second outfan of photoelectrical coupler is connected with MCU control circuit.
Hum bar electric induction circuit the most according to claim 1, it is characterized in that: described signal processing circuit includes amplifying circuit and frequency selection circuit, described amplifying circuit includes the first amplifier (A1), second amplifier (A2), 3rd amplifier (A3), the in-phase input end of described first amplifier (A1) is connected with signal receiving circuit, the inverting input of described first amplifier (A1) is connected with positive source, the outfan of described first amplifier (A1) and the in-phase input end of the second amplifier (A2), inverting input connects, between outfan and the in-phase input end of the 3rd amplifier (A3) of the second amplifier (A2), frequency selection circuit is set.
Hum bar electric induction circuit the most according to claim 7, it is characterised in that: it is provided with commutation diode (D1) between outfan and the in-phase input end of the 3rd amplifier (A3) of described second amplifier (A2).
Hum bar electric induction circuit the most according to claim 1, it is characterised in that: described warning circuit uses NV040C speech chip.
nullHum bar electric induction circuit the most according to claim 1,It is characterized in that: described signal receiving circuit includes that RC detecting circuit and a bar receive dedicated antenna,Described RC detecting circuit includes the second sample resistance (R2)、3rd sample resistance (R3)、First electric capacity (C1),One end of described second sample resistance (R2) respectively with receive dedicated antenna、One end of first electric capacity (C1)、The input of signal processing circuit connects,The other end ground connection of the first electric capacity (C1),The other end of the second sample resistance (R2) respectively with one end of the 3rd sample resistance (R3)、One end of 4th sample resistance (R4)、Third gear position selects one end of switch (J3) to connect,The other end of the 3rd sample resistance (R3) connects power cathode,The other end of the 4th sample resistance (R4) selects switch (J2) to connect power cathode through the second gear,Third gear position selects the other end of switch (J3) to connect power cathode.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201620206553.7U CN205880042U (en) | 2016-03-17 | 2016-03-17 | Hum bar electric induction circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201620206553.7U CN205880042U (en) | 2016-03-17 | 2016-03-17 | Hum bar electric induction circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
CN205880042U true CN205880042U (en) | 2017-01-11 |
Family
ID=57687151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201620206553.7U Active CN205880042U (en) | 2016-03-17 | 2016-03-17 | Hum bar electric induction circuit |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN205880042U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105823922A (en) * | 2016-03-17 | 2016-08-03 | 国家电网公司 | AC charged induction device |
CN107727977A (en) * | 2017-11-18 | 2018-02-23 | 广东电网有限责任公司清远供电局 | The overvoltage protection device wireless monitoring device that a kind of band logical severed finger shows |
CN107854818A (en) * | 2017-08-31 | 2018-03-30 | 海南电网有限责任公司保亭供电局 | Multi-functional climbers |
-
2016
- 2016-03-17 CN CN201620206553.7U patent/CN205880042U/en active Active
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105823922A (en) * | 2016-03-17 | 2016-08-03 | 国家电网公司 | AC charged induction device |
CN105823922B (en) * | 2016-03-17 | 2019-01-08 | 国家电网公司 | Hum bar electrical induction device |
CN107854818A (en) * | 2017-08-31 | 2018-03-30 | 海南电网有限责任公司保亭供电局 | Multi-functional climbers |
CN107854818B (en) * | 2017-08-31 | 2019-08-20 | 海南电网有限责任公司保亭供电局 | Multi-functional climbers |
CN107727977A (en) * | 2017-11-18 | 2018-02-23 | 广东电网有限责任公司清远供电局 | The overvoltage protection device wireless monitoring device that a kind of band logical severed finger shows |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105823922A (en) | AC charged induction device | |
CN205880042U (en) | Hum bar electric induction circuit | |
CN201562007U (en) | Intelligent non-contact type high-voltage electroscope | |
CN108627748A (en) | A kind of fault arc detection method based on electric arc time pulse signal characteristic | |
CN105717425A (en) | Supersonic online detection system of 1000kV GIS | |
CN204215209U (en) | For the signal conditioning circuit of data collector in drawout cubicle | |
CN109270580B (en) | Chargeable, sensitivity-adjustable and high-sensitivity handheld metal detector | |
CN203276448U (en) | Alarm circuit | |
CN205607928U (en) | Acoustic emission vibration detection device based on piezoceramics piece | |
CN204945699U (en) | A kind of intelligent sound with infrared induction identification | |
CN205067417U (en) | Soil pH detector | |
CN205209626U (en) | Sensor based on discernment of characteristic audio frequency | |
CN206832942U (en) | Ultrasonic amplifier and portable GIS partial discharge electrification detection system | |
CN207427481U (en) | A kind of microphone test device | |
CN206270411U (en) | A kind of Micro Energy Lose analyzer based on Internet of Things | |
CN105223458B (en) | A kind of coke-oven locomotive electric mill rail short-circuit detecting circuit | |
CN103353566A (en) | Cell in-place detection circuit for simulation circuit apparatus | |
CN201838993U (en) | Multiple protection device for monitoring faults of motor | |
CN205280864U (en) | Family's circuit breakpoint detector based on electric field principle | |
CN201449655U (en) | Sound-prompt wireless door magnetic sensor | |
CN203165132U (en) | Novel bank safety alarm with infrared monitoring and relay output control | |
CN205941793U (en) | Transformer partial discharge detection device | |
CN106327767A (en) | Anti-theft device and method for keyboard or mouse | |
CN204789738U (en) | Early warning electric leakage alarm | |
CN206301050U (en) | Not clear line alignment tester |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant |