CN109374946A - A kind of detection sensor for high-power charging equipment - Google Patents
A kind of detection sensor for high-power charging equipment Download PDFInfo
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- CN109374946A CN109374946A CN201811124960.3A CN201811124960A CN109374946A CN 109374946 A CN109374946 A CN 109374946A CN 201811124960 A CN201811124960 A CN 201811124960A CN 109374946 A CN109374946 A CN 109374946A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
- G01R15/202—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices using Hall-effect devices
Abstract
The invention discloses a kind of detection sensors for high-power charging equipment, including signal generating unit, detection unit, power supply unit, signal processing unit and connection unit, this sensor passes through included 15V voltage regulator circuit, and the negative voltage generated by oscillating circuit mode, the low voltage power supply provided using the battery in additional charging equipment is only provided, it is usually no more than 24V DC power supply, it may dispense with additional power module in this way, simultaneously, using the principle of Hall effect closed-loop sensors, solve the anti-interference problem of circuit, improve the detection accuracy and stability of sensor；In addition, the present invention by increasing by 485 bus communication modes on a sensor, it is only necessary to the output signal port of each sensor is serially connected in both threads, access master control borad, cabling high number reduces, and also increases the reliability that equipment detects and controls.
Description
Technical field
The present invention relates to a kind of detection sensors for high-power charging equipment, belong to intelligent measurement field.
Background technique
The charging current detection sensor used on charging equipment at present, the mainly chip that small device uses
Current sensor, working sensor voltage 5V, output voltage 2.5V+0.625V, which stablizes, the disadvantage is that needing
Additional 5V power-switching circuit, and output is influenced bigger by power supply, anti-interference ability is weak；Large-scale charging equipment, uses
Hall closed-loop current sensors, the sensor performance is superior, and stability and noiseproof feature are all relatively good, the disadvantage is that needing additional
± 15V power supply, the current power of negative supply all the way are in waste state at work；In multichannel charging equipment, use at present
Sensor, be all analog output, every group requires power supply line and signal wire, once the interface of charging equipment is more than 10 groups,
Tens conducting wires will be had to need to access master control borad, bring great inconvenience to actual assembled operation and maintenance.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention provides a kind of detection sensings for high-power charging equipment
Device.
In order to achieve the above object, the invention adopts the following technical scheme: a kind of detection for high-power charging equipment
Sensor, it is characterised in that: including signal generating unit, detection unit, power supply unit, signal processing unit and connection unit,
The signal generating unit includes RC oscillating circuit, for generating sine wave；The detection unit includes Hall element, it is described suddenly
You connect element with signal processing unit, and the signal of generation is simultaneously transferred at signal by the magnetic field generated for detection circuit electric current
Manage unit；Said supply unit includes -10V power supply source, 15V power supply source and 3.3V the power supply source, -10V power supply source and signal
Generating unit connection, the sine wave transmissions that the signal generating unit generates to -10V power supply source formation negative voltage signal, described -
10V power supply source is connect with detection unit, the normal work of the circuit for guaranteeing detection unit；The 15V power supply source with it is described
Detection unit connection, provides 15V voltage regulator circuit, for providing pressure stabilizing positive circuit to detection unit；The 3.3V power supply source with
Signal processing unit connection, for providing power supply to signal processing unit；The signal processing unit includes digiverter
And single-chip microcontroller, the input terminal of the digiverter are connect with detection unit, the digiverter is for receiving detection
The signal of unit simultaneously converts the signal to digital signal, and the input terminal of the single-chip microcontroller and the output end of digiverter connect
It connects, the single-chip microcontroller is used to receive the digital signal of digiverter and transmits a signal to connection unit；The connection is single
Member uses 485 communication bus structures, is transferred to high-power fill for receiving the signal of several single-chip microcontrollers transmission and being integrated
In electric equipment, the output end of several single-chip microcontrollers is serially connected in the both threads of the input terminal of the connection unit.
Preferably, the RC oscillating circuit is by the second Integrated circuit IC 2, first resistor R1,3rd resistor R3, the first electricity
Hold C1, the second capacitor C2, second resistance R2 and the 8th resistance R8 composition, wherein one end of 3rd resistor R3 and the second capacitor C2 is simultaneously
It connects, other end ground connection, the sequential circuit of the C1 and first resistor R1 composition is in parallel with the parallel circuit that R2, R8 and IC2 are formed
And C2's and end connection, the first resistor R1,3rd resistor R3, first capacitor are met with the 3rd resistor R3 and the second capacitor
C1, the second capacitor C2 determine the frequency of concussion, the amplitude of the ratio decision concussion of second resistance R2 and the 8th resistance R8, the RC
Oscillating circuit is for generating sinusoidal ac signal；The RC oscillating circuit is followed by isolation circuit, and the isolation circuit is by third electricity
Hold C3, rectification circuit BD1 and the 11st capacitor C11 composition, the third capacitor C3 is concatenated with RC oscillating circuit, successively gone here and there thereafter
Rectification circuit BD1 and the 11st capacitor C11 are met, the rectification circuit BD1 is bridge heap circuit, for generate RC oscillating circuit
AC signal is integrated into direct current signal, the third capacitor C3 and the 11st capacitor C11 be used to integrate after direct current signal and
Original circuit is isolated, and floating ground is formed；The 8th capacitor C8 is concatenated after the isolation circuit, the 8th capacitor C8 is a great Rong
Capacitor is measured, for the voltage after integration to be formed stable voltage signal；The 15V voltage regulator circuit by the 6th Integrated circuit IC 6,
6th capacitor C6, the 7th capacitor C7, the 13rd capacitor C13 and the 14th capacitor C14 composition, the 7th Integrated circuit IC 6 are
Integrated regulator, the 6th capacitor C6, the 7th capacitor C7, the 13rd capacitor C13 and the 14th capacitor C14 are filtered electricals
Hold, the 6th capacitor C6, the 7th capacitor C7, the 13rd capacitor C13 and the 14th capacitor C14 one end be grounded, the 6th electricity
The other end for holding C6 and the 7th capacitor C7 is in parallel, and the other end of the 13rd capacitor C13 and the 14th capacitor C14 are in parallel, the 6th electricity
The parallel connected end for holding C6 and the 7th capacitor C7 is connected with the 6th Integrated circuit IC 6, the electricity of the 13rd capacitor C13 and the 14th of then connecting
Hold the parallel connected end of C14, the regulated power supply of the 15V voltage regulator circuit 15V；The 3.3V power supply source is by the 7th Integrated circuit IC 7,
Nine capacitor C9, the tenth capacitor C10, the 15th capacitor C15 and the 16th capacitor C16 composition, the 7th Integrated circuit IC 7 is steady
Integrated circuit is pressed, the 9th capacitor C9, the tenth capacitor C10, the 15th capacitor C15 and the 16th capacitor C16 are filter capacitor,
The 9th capacitor C9, the tenth capacitor C10, the 15th capacitor C15 and the 16th capacitor C16 one end be grounded, the 9th capacitor
The other end of C9 and the tenth capacitor C10 are in parallel, and the other end of the 15th capacitor C15 and the 16th capacitor C16 is in parallel, the 9th capacitor
The parallel connected end of C9 and the tenth capacitor C10 are connected with the 7th Integrated circuit IC 7, the electricity of the 15th capacitor C15 and the 16th of then connecting
Hold the parallel connected end of C16, the 3.3V power supply source generates the regulated power supply of 3.3V；The detection unit is Hall element H1, the 4th
The detection circuit of resistance R4, the 7th resistance R7, first diode D1 and the second diode D2 composition, the first diode D1,
4th resistance R4, Hall element H1, the 7th resistance R7 and the second diode D2 are sequentially connected in series, the 4th resistance R4, the 7th electricity
Resistance R7, first diode D1 and the second diode D2 are used to be divided for Hall element H1；The signal processing unit includes
Comparison circuit, power amplification circuit, current-to-voltage converting circuit, D/A converting circuit and the 4th Integrated circuit IC 4, the comparison
Circuit is made of third Integrated circuit IC 3, the tenth resistance R10 and eleventh resistor R11, the tenth resistance R10 and the 11st
One end of resistance R11 is connect with the output end of Hall element H1 respectively, the other end input terminal with third Integrated circuit IC 3 respectively
Connection, the third Integrated circuit IC 3 are comparator, and the output end and power amplification circuit of the third Integrated circuit IC 3 connect
It connects；The power amplification circuit is by the 9th resistance R9, twelfth resistor R12, the first triode Q1, the second triode Q2, third
Diode D3, the 4th diode D4, the 5th diode D5, the 6th diode D6 composition, the third diode D3 and the four or two
One end of pole pipe D4 is separately connected the output end of third Integrated circuit IC 3, the 9th resistance R9 and the 5th diode D5 composition
Sequential circuit and the first triode Q1 and connect, one end of the parallelled circuit is connect with the other end of third diode D3, described
Sequential circuit and the second triode Q2 of twelfth resistor R12 and the 6th diode D6 composition simultaneously connect, one end of the parallelled circuit
It is connect with the other end of the 4th diode D4, the other end of both of the aforesaid parallelled circuit is connect with current-to-voltage converting circuit；Institute
It states current-to-voltage converting circuit to be made of the first inductor L1, the 15th resistance R15 and the 8th Integrated circuit IC 8, described first
One end of inductor L1 is connect with the power amplification circuit, and the other end is separately connected the integrated electricity of the 15th resistance R15 and the 8th
The output end of road IC8, the 8th Integrated circuit IC 8 are connect with D/A converting circuit；The D/A converting circuit includes first
Integrated circuit IC 1, first Integrated circuit IC 1 are used to turn analog signal using the digital analog converter of model ADC0809
It is changed to digital signal；The output end of first Integrated circuit IC 1 is connect with the 4th Integrated circuit IC 4, the described 4th integrated electricity
Road IC4 uses the single-chip microcontroller of model 80C51, and the 5th capacitor C5, the 12nd capacitor C12, first are connected on the single-chip microcontroller
The oscillating circuit of crystal oscillator Y1 and the 14th resistance R14 composition, the oscillating circuit is for providing the oscillation frequency of single-chip microcontroller；
The 485 communication bus structure is by the 5th Integrated circuit IC 5, the 16th resistance R16, the 17th resistance R17, the 18th resistance
R18, the 19th resistance R19 and the 20th resistance R20 composition, the 5th Integrated circuit IC 5 use model MAX485EEPA
Interface, the 16th resistance R16, the 17th resistance R17, the 18th resistance R18, the 19th resistance R19 and the 20th electricity
Hinder the bus communication part that R20 is 485 communication bus structures.
Preferably, the connecting pin of the tenth resistance R10 and third Integrated circuit IC 3 is also sequentially connected in series the 4th capacitor C4
With the negative feedback loop of thirteenth resistor R13 composition, turn after the thirteenth resistor R13 with power amplification circuit and Current Voltage
Change the connecting pin connection of circuit.
Preferably, the detection unit further includes the 5th resistance R5, the 6th resistance R6 and the first rheostat TR1 composition
Zeroing circuit, one end of the 5th resistance R5 is in parallel with one end of the 6th resistance R6, the other end and the 4th resistance R4 and suddenly
The connecting pin connection of your element H1, the other end of the 6th resistance R6 and the connecting pin of the 7th resistance R7 and Hall element H1 connect
It connects, the 5th resistance R5 is connect with the parallel connected end of the 6th resistance R6 with one end of the first rheostat TR1, first rheostat
The other end of TR1 is connect with the eleventh resistor R11 with the connecting pin of third Integrated circuit IC 3.
The utility model has the advantages that compared with prior art, the invention has the following advantages that the 15V that the present invention is carried by sensor
Voltage regulator circuit, and the negative voltage generated by oscillating circuit mode, it is only necessary to be provided using the battery in additional charging equipment
Low voltage power supply can be usually no more than 24V DC power supply.In this manner it is possible to additional power module is saved, meanwhile, it uses
The principle of Hall effect closed-loop sensors solves the anti-interference problem of circuit, improves the detection accuracy and stability of sensor；This
Outside, the present invention by increasing by 485 bus communication modes on a sensor, it is only necessary to go here and there the output signal port of each sensor
It connects in both threads, accesses master control borad, cabling high number reduces, and also increases the reliability that equipment detects and controls.
Detailed description of the invention
Fig. 1 is functional schematic of the invention；
Fig. 2 is the structure chart of signal generating unit and power supply unit of the invention；
The circuit structure diagram of the above-mentioned remainder of the position Fig. 3 present invention.
Specific embodiment
In the following with reference to the drawings and specific embodiments, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
It the present invention rather than limits the scope of the invention, after the present invention has been read, those skilled in the art are to of the invention each
The modification of kind equivalent form falls within the application range as defined in the appended claims.
As shown in Figure 1, a kind of detection sensor for high-power charging equipment, including signal generating unit, detection list
Member, power supply unit, signal processing unit and connection unit, signal generating unit includes RC oscillating circuit, for generating sine wave；
Detection unit includes Hall element, and Hall element is connect with signal processing unit, and the magnetic field for the generation of detection circuit electric current is simultaneously
The signal of generation is transferred to signal processing unit；Power supply unit includes -10V power supply source, 15V power supply source and 3.3V power supply source, -
10V power supply source is connect with signal generating unit, and the sine wave transmissions that signal generating unit generates to -10V power supply source form negative electricity
Signal is pressed, -10V power supply source is connect with detection unit, the normal work of the circuit for guaranteeing detection unit；15V power supply source with
Detection unit connection, provides 15V voltage regulator circuit, for providing pressure stabilizing positive circuit to detection unit；3.3V power supply source and signal
Processing unit connection, for providing power supply to signal processing unit；Signal processing unit includes digiverter and single-chip microcontroller,
The input terminal of digiverter is connect with detection unit, and digiverter is used to receive the signal of detection unit and by signal
It is converted into digital signal, the input terminal of single-chip microcontroller and the output end of digiverter connect, and single-chip microcontroller turns for receiving digital-to-analogue
The digital signal of changing device simultaneously transmits a signal to connection unit；Connection unit uses 485 communication bus structures, if for receiving
It does a signal for single-chip microcontroller transmission and is integrated and is transferred in high-power charging equipment, the output end concatenation of several single-chip microcontrollers
In the both threads of the input terminal of connection unit.
Circuit diagram as Figure 2-3, RC oscillating circuit is by the second Integrated circuit IC 2, first resistor R1,3rd resistor
R3, first capacitor C1, the second capacitor C2, second resistance R2 and the 8th resistance R8 are formed, wherein 3rd resistor R3 and the second capacitor
One end of C2 simultaneously connects, other end ground connection, the electricity in parallel that the sequential circuit of C1 and first resistor R1 composition is formed with R2, R8 and IC2
Road is in parallel and C2's and connects end with 3rd resistor R3 and the second capacitor and connects, first resistor R1,3rd resistor R3, first capacitor
C1, the second capacitor C2 determine the frequency of concussion, the amplitude of the ratio decision concussion of second resistance R2 and the 8th resistance R8, RC concussion
Circuit is for generating sinusoidal ac signal；RC oscillating circuit is followed by isolation circuit, and isolation circuit is by third capacitor C3, rectification circuit
BD1 and the 11st capacitor C11 composition, third capacitor C3 concatenates with RC oscillating circuit, is sequentially connected in series rectification circuit BD1 and the thereafter
11 capacitor C11, rectification circuit BD1 are bridge heap circuit, and the AC signal for generating RC oscillating circuit is integrated into direct current letter
Number, third capacitor C3 and the 11st capacitor C11 are used to for the direct current signal after integration being isolated with original circuit, are formed floating
Ground；The 8th capacitor C8 is concatenated after isolation circuit, the 8th capacitor C8 is a large bulk capacitance, for forming surely the voltage after integration
Fixed voltage signal；15V voltage regulator circuit is by the 6th Integrated circuit IC 6, the 6th capacitor C6, the 7th capacitor C7, the 13rd capacitor C13
It is formed with the 14th capacitor C14, the 7th Integrated circuit IC 6 is integrated regulator, the 6th capacitor C6, the 7th capacitor C7, the tenth
Three capacitor C13 and the 14th capacitor C14 are filter capacitors, the 6th capacitor C6, the 7th capacitor C7, the 13rd capacitor C13 and the tenth
One end of four capacitor C14 is grounded, and the other end of the 6th capacitor C6 and the 7th capacitor C7 are in parallel, the 13rd capacitor C13 and the tenth
The other end of four capacitor C14 is in parallel, and the parallel connected end of the 6th capacitor C6 and the 7th capacitor C7 are connected with the 6th Integrated circuit IC 6, with
The parallel connected end of the 13rd capacitor C13 and the 14th capacitor C14 of series connection afterwards, the regulated power supply of 15V voltage regulator circuit 15V；3.3V power supply
Source is made of the 7th Integrated circuit IC 7, the 9th capacitor C9, the tenth capacitor C10, the 15th capacitor C15 and the 16th capacitor C16,
7th Integrated circuit IC 7 is integrated regulator, the 9th capacitor C9, the tenth capacitor C10, the electricity of the 15th capacitor C15 and the 16th
Appearance C16 is filter capacitor, the 9th capacitor C9, the tenth capacitor C10, the 15th capacitor C15 and the 16th capacitor C16 one end connect
The other end of ground, the 9th capacitor C9 and the tenth capacitor C10 are in parallel, and the other end of the 15th capacitor C15 and the 16th capacitor C16 are simultaneously
The parallel connected end of connection, the 9th capacitor C9 and the tenth capacitor C10 are connected with the 7th Integrated circuit IC 7, and then connect the 15th capacitor C15
With the parallel connected end of the 16th capacitor C16,3.3V power supply source generates the regulated power supply of 3.3V；Detection unit is Hall element H1, the
The detection circuit of four resistance R4, the 7th resistance R7, first diode D1 and the second diode D2 composition, first diode D1, the
Four resistance R4, Hall element H1, the 7th resistance R7 and the second diode D2 are sequentially connected in series, the 4th resistance R4, the 7th resistance R7,
One diode D1 and the second diode D2 is used to be divided for Hall element H1；Signal processing unit includes comparison circuit, function
Rate amplifying circuit, current-to-voltage converting circuit, D/A converting circuit and the 4th Integrated circuit IC 4, comparison circuit are integrated by third
IC circuit 3, the tenth resistance R10 and eleventh resistor R11 composition, one end of the tenth resistance R10 and eleventh resistor R11 respectively with
The output end of Hall element H1 connects, and the other end is connect with the input terminal of third Integrated circuit IC 3 respectively, third integrated circuit
IC3 is comparator, and the output end of third Integrated circuit IC 3 is connect with power amplification circuit；Power amplification circuit is by the 9th resistance
R9, twelfth resistor R12, the first triode Q1, the second triode Q2, third diode D3, the 4th diode D4, the five or two pole
One end of pipe D5, the 6th diode D6 composition, third diode D3 and the 4th diode D4 are separately connected third Integrated circuit IC 3
Output end, sequential circuit and the first triode Q1 of the 9th resistance R9 and the 5th diode D5 composition simultaneously connect, the parallelled circuit
One end connect with the other end of third diode D3, twelfth resistor R12 and the 6th diode D6 composition sequential circuit with
Second triode Q2 simultaneously connects, and one end of the parallelled circuit is connect with the other end of the 4th diode D4, both of the aforesaid parallelled circuit
The other end connect with current-to-voltage converting circuit；Current-to-voltage converting circuit by the first inductor L1, the 15th resistance R15 and
8th Integrated circuit IC 8 composition, one end of the first inductor L1 are connect with power amplification circuit, and the other end is separately connected the 15th
Resistance R15 and the 8th Integrated circuit IC 8, the output end of the 8th Integrated circuit IC 8 are connect with D/A converting circuit；Digital-to-analogue conversion electricity
Road includes the first Integrated circuit IC 1, and the first Integrated circuit IC 1 is used to simulate using the digital analog converter of model ADC0809
Signal is converted to digital signal；The output end of first Integrated circuit IC 1 is connect with the 4th Integrated circuit IC 4, the 4th integrated circuit
IC4 uses the single-chip microcontroller of model 80C51, and the 5th capacitor C5, the 12nd capacitor C12, first crystal vibration are connected on single-chip microcontroller
The oscillating circuit of device Y1 and the 14th resistance R14 composition is swung, the oscillating circuit is for providing the oscillation frequency of single-chip microcontroller；485 is logical
Bus structures are interrogated by the 5th Integrated circuit IC 5, the 16th resistance R16, the 17th resistance R17, the 18th resistance R18, the 19th
Resistance R19 and the 20th resistance R20 composition, interface of the 5th Integrated circuit IC 5 using model MAX485EEPA, the 16th electricity
Hindering R16, the 17th resistance R17, the 18th resistance R18, the 19th resistance R19 and the 20th resistance R20 is 485 communication bus knots
The bus communication part of structure.
In addition, the connecting pin of the tenth resistance R10 and third Integrated circuit IC 3 is also sequentially connected in series the 4th capacitor C4 and the 13rd
The negative feedback loop of resistance R13 composition, the connection after thirteenth resistor R13 with power amplification circuit and current-to-voltage converting circuit
End connection.Detection unit further includes the zeroing circuit of the 5th resistance R5, the 6th resistance R6 and the first rheostat TR1 composition simultaneously,
One end of 5th resistance R5 is in parallel with one end of the 6th resistance R6, the connecting pin of the other end and the 4th resistance R4 and Hall element H1
Connection, the other end of the 6th resistance R6 are connect with the connecting pin of the 7th resistance R7 and Hall element H1, the 5th resistance R5 and the 6th
The parallel connected end of resistance R6 is connect with one end of the first rheostat TR1, the other end and eleventh resistor R11 of the first rheostat TR1
It is connect with the connecting pin of third Integrated circuit IC 3.
When in use, by RC oscillating circuit, an a few K hertz of sine wave is generated, sine wave is rectified by bridge heap,
Then, a d. c. voltage signal is obtained by filtering, the anode of the signal and power ground is shorted, then the DC voltage is believed
Number negative terminal, be exactly a negative voltage signal, adjust the frequency and amplitude of oscillating circuit, so that it may obtain desired voltage value.It should
Negative voltage bearing power is limited, and due to the one-way of charging current, negative supply is not in working condition, thus, the part
Output power can guarantee that the normal work of circuit, the result of real work also demonstrate this point.Utilize the Hall of Hall effect
Element, the magnetic field that detection electric current generates, and it is linear export to comparator, through power amplifier by Current amplifier, secondary coil
Electric current is generated, magnet ring is acted on, the magnetic field generated with primary current is offset, and the magnetic field in magnet ring remains Zero flux shape
State.Since the circuit part is using negative feedback loop, test speed is fast, and precision is high, strong antijamming capability.
The 15V voltage regulator circuit that the present invention is carried by sensor, and the negative voltage generated by oscillating circuit mode, only
The low voltage power supply provided using the battery in additional charging equipment is provided.In this manner it is possible to save additional power supply mould
Block, meanwhile, using the principle of Hall effect closed-loop sensors, the anti-interference problem of circuit is solved, improves the detection essence of sensor
Degree and stability.
Furthermore the present invention by increasing by 485 bus communication modes on a sensor, it is only necessary to by the output of each sensor
Signal port is serially connected in both threads, accesses master control borad, and cabling high number reduces, also increases equipment and detect and control
Reliability.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (4)
1. a kind of detection sensor for high-power charging equipment, it is characterised in that: single including signal generating unit, detection
Member, power supply unit, signal processing unit and connection unit,
The signal generating unit includes RC oscillating circuit, for generating sine wave；
The detection unit includes Hall element, and the Hall element is connect with signal processing unit, is used for detection circuit electric current
The signal of generation is simultaneously transferred to signal processing unit by the magnetic field of generation；
Said supply unit includes -10V power supply source, 15V power supply source and 3.3V power supply source, and -10V the power supply source and signal occur
Unit connection, the sine wave transmissions that the signal generating unit generates to -10V power supply source form the negative voltage signal, -10V
Power supply source is connect with detection unit, the normal work of the circuit for guaranteeing detection unit；
The 15V power supply source is connect with the detection unit, provides 15V voltage regulator circuit, for providing pressure stabilizing to detection unit
Positive circuit；
The 3.3V power supply source is connect with signal processing unit, for providing power supply to signal processing unit；
The signal processing unit includes digiverter and single-chip microcontroller, and the input terminal of the digiverter and detection are single
Member connection, the digiverter are used to receive the signal of detection unit and convert the signal to digital signal, the monolithic
The input terminal of machine and the output end of digiverter connect, and the single-chip microcontroller is used to receive the digital signal of digiverter
And transmit a signal to connection unit；
The connection unit uses 485 communication bus structures, for receiving the signal of several single-chip microcontrollers transmission and being integrated
It is transferred in high-power charging equipment, the output end of several single-chip microcontrollers is serially connected in the two of the input terminal of the connection unit
On root line.
2. the detection sensor according to claim 1 for high-power charging equipment, it is characterised in that:
The RC oscillating circuit is by the second Integrated circuit IC 2, first resistor R1,3rd resistor R3, first capacitor C1, the second capacitor
C2, second resistance R2 and the 8th resistance R8 composition, wherein one end of 3rd resistor R3 and the second capacitor C2 and connect, another termination
Ground, the C1 and first resistor R1 composition sequential circuit it is in parallel with the parallel circuit that R2, R8 and IC2 are formed and with the third
Resistance R3 and the second capacitor C2's and connect end connection, the first resistor R1,3rd resistor R3, first capacitor C1, the second capacitor
C2 determines the frequency of concussion, the amplitude of the ratio decision concussion of second resistance R2 and the 8th resistance R8, and the RC oscillating circuit is used
In generation sinusoidal ac signal；
The RC oscillating circuit is followed by isolation circuit, and the isolation circuit is by third capacitor C3, rectification circuit BD1 and the 11st electricity
Hold C11 composition, the third capacitor C3 is concatenated with RC oscillating circuit, is sequentially connected in series rectification circuit BD1 and the 11st capacitor thereafter
C11, the rectification circuit BD1 are bridge heap circuit, and the AC signal for generating RC oscillating circuit is integrated into direct current signal, institute
Third capacitor C3 and the 11st capacitor C11 is stated for the direct current signal after integration to be isolated with original circuit, forms floating ground；
The 8th capacitor C8 is concatenated after the isolation circuit, the 8th capacitor C8 is a large bulk capacitance, for it will integrate after
Voltage forms stable voltage signal；
The 15V voltage regulator circuit is by the 6th Integrated circuit IC 6, the 6th capacitor C6, the 7th capacitor C7, the 13rd capacitor C13 and
14 capacitor C14 composition, the 7th Integrated circuit IC 6 is integrated regulator, the 6th capacitor C6, the 7th capacitor C7,
13rd capacitor C13 and the 14th capacitor C14 is filter capacitor, the 6th capacitor C6, the 7th capacitor C7, the 13rd capacitor
One end of C13 and the 14th capacitor C14 are grounded, and the other end of the 6th capacitor C6 and the 7th capacitor C7 is in parallel, the 13rd capacitor
The other end of C13 and the 14th capacitor C14 are in parallel, the parallel connected end and the 6th integrated circuit of the 6th capacitor C6 and the 7th capacitor C7
IC6 series connection, the parallel connected end for the 13rd capacitor C13 and the 14th capacitor C14 that then connect, the pressure stabilizing of the 15V voltage regulator circuit 15V
Power supply；
The 3.3V power supply source is by the 7th Integrated circuit IC 7, the 9th capacitor C9, the tenth capacitor C10, the 15th capacitor C15 and
16 capacitor C16 composition, the 7th Integrated circuit IC 7 be integrated regulator, the 9th capacitor C9, the tenth capacitor C10,
15th capacitor C15 and the 16th capacitor C16 is filter capacitor, the 9th capacitor C9, the tenth capacitor C10, the 15th capacitor
One end of C15 and the 16th capacitor C16 are grounded, and the other end of the 9th capacitor C9 and the tenth capacitor C10 is in parallel, the 15th capacitor
The other end of C15 and the 16th capacitor C16 are in parallel, the parallel connected end and the 7th integrated circuit of the 9th capacitor C9 and the tenth capacitor C10
IC7 series connection, the parallel connected end for the 15th capacitor C15 and the 16th capacitor C16 that then connect, the 3.3V power supply source generate 3.3V's
Regulated power supply；
The detection unit is Hall element H1, the 4th resistance R4, the 7th resistance R7, first diode D1 and the second diode D2
The detection circuit of composition, the first diode D1, the 4th resistance R4, Hall element H1, the 7th resistance R7 and the second diode
D2 is sequentially connected in series, and the 4th resistance R4, the 7th resistance R7, first diode D1 and the second diode D2 are used to be Hall element
H1 is divided；
The signal processing unit include comparison circuit, power amplification circuit, current-to-voltage converting circuit, D/A converting circuit and
4th Integrated circuit IC 4,
The comparison circuit is made of third Integrated circuit IC 3, the tenth resistance R10 and eleventh resistor R11, the tenth resistance
One end of R10 and eleventh resistor R11 are connect with the output end of Hall element H1 respectively, the other end respectively with third integrated circuit
The input terminal of IC3 connects, and the third Integrated circuit IC 3 is comparator, the output end and power of the third Integrated circuit IC 3
Amplifying circuit connection；
The power amplification circuit is by the 9th resistance R9, twelfth resistor R12, the first triode Q1, the second triode Q2, third
Diode D3, the 4th diode D4, the 5th diode D5, the 6th diode D6 composition, the third diode D3 and the four or two
One end of pole pipe D4 is separately connected the output end of third Integrated circuit IC 3, the 9th resistance R9 and the 5th diode D5 composition
Sequential circuit and the first triode Q1 and connect, one end of the parallelled circuit is connect with the other end of third diode D3, described
Sequential circuit and the second triode Q2 of twelfth resistor R12 and the 6th diode D6 composition simultaneously connect, one end of the parallelled circuit
It is connect with the other end of the 4th diode D4, the other end of both of the aforesaid parallelled circuit is connect with current-to-voltage converting circuit；
The current-to-voltage converting circuit is made of the first inductor L1, the 15th resistance R15 and the 8th Integrated circuit IC 8, institute
The one end for stating the first inductor L1 is connect with the power amplification circuit, and the other end is separately connected the 15th resistance R15 and the 8th
The output end of Integrated circuit IC 8, the 8th Integrated circuit IC 8 is connect with D/A converting circuit；
The D/A converting circuit includes the first Integrated circuit IC 1, and first Integrated circuit IC 1 uses model ADC0809
Digital analog converter, for converting analog signals into digital signal；
The output end of first Integrated circuit IC 1 is connect with the 4th Integrated circuit IC 4, and the 4th Integrated circuit IC 4 uses
The single-chip microcontroller of model 80C51 connects the 5th capacitor C5, the 12nd capacitor C12, first crystal oscillator on the single-chip microcontroller
The oscillating circuit of Y1 and the 14th resistance R14 composition, the oscillating circuit is for providing the oscillation frequency of single-chip microcontroller；
The 485 communication bus structure is by the 5th Integrated circuit IC 5, the 16th resistance R16, the 17th resistance R17, the 18th electricity
R18, the 19th resistance R19 and the 20th resistance R20 composition are hindered, the 5th Integrated circuit IC 5 uses model
The interface of MAX485EEPA, the 16th resistance R16, the 17th resistance R17, the 18th resistance R18, the 19th resistance R19
It is the bus communication part of 485 communication bus structures with the 20th resistance R20.
3. the detection sensor according to claim 2 for high-power charging equipment, it is characterised in that: the tenth electricity
The connecting pin of resistance R10 and third Integrated circuit IC 3 is also sequentially connected in series the negative-feedback of the 4th capacitor C4 and thirteenth resistor R13 composition
Circuit is connect after the thirteenth resistor R13 with the connecting pin of power amplification circuit and current-to-voltage converting circuit.
4. the detection sensor according to claim 2 for high-power charging equipment, it is characterised in that: the detection
Unit further includes the zeroing circuit of the 5th resistance R5, the 6th resistance R6 and the first rheostat TR1 composition, the 5th resistance R5's
One end is in parallel with one end of the 6th resistance R6, and the other end is connect with the connecting pin of the 4th resistance R4 and Hall element H1, and described
The other end of six resistance R6 is connect with the connecting pin of the 7th resistance R7 and Hall element H1, the 5th resistance R5 and the 6th resistance
The parallel connected end of R6 is connect with one end of the first rheostat TR1, the other end of the first rheostat TR1 and the eleventh resistor
R11 is connect with the connecting pin of third Integrated circuit IC 3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811124960.3A CN109374946A (en) | 2018-09-26 | 2018-09-26 | A kind of detection sensor for high-power charging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811124960.3A CN109374946A (en) | 2018-09-26 | 2018-09-26 | A kind of detection sensor for high-power charging equipment |
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| CN109374946A true CN109374946A (en) | 2019-02-22 |
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| CN201811124960.3A Pending CN109374946A (en) | 2018-09-26 | 2018-09-26 | A kind of detection sensor for high-power charging equipment |
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| CN2888717Y (en) * | 2006-04-07 | 2007-04-11 | 杨建华 | Energy-saving secondary battery rapid charging device |
| CN102496987A (en) * | 2011-12-10 | 2012-06-13 | 常州永旭车辆配件厂 | Charger detection device for electric vehicle |
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| CN206330762U (en) * | 2016-12-28 | 2017-07-14 | 河南理工大学 | Based on self-powered electric automobile power consumption real-time measurement apparatus |
| CN108536053A (en) * | 2018-03-15 | 2018-09-14 | 无锡职业技术学院 | A kind of intelligent humidity sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2888717Y (en) * | 2006-04-07 | 2007-04-11 | 杨建华 | Energy-saving secondary battery rapid charging device |
| CN102496987A (en) * | 2011-12-10 | 2012-06-13 | 常州永旭车辆配件厂 | Charger detection device for electric vehicle |
| CN203101477U (en) * | 2012-12-27 | 2013-07-31 | 江苏茶花电气有限公司 | Hall closed-loop current sensor |
| CN103399258A (en) * | 2013-08-09 | 2013-11-20 | 安徽继远电网技术有限责任公司 | Traveling wave fault location front-end analog acquisition board based on high-precision Hall effect |
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