CN110095674A - A kind of grounded continuous detection circuit - Google Patents
A kind of grounded continuous detection circuit Download PDFInfo
- Publication number
- CN110095674A CN110095674A CN201810084947.3A CN201810084947A CN110095674A CN 110095674 A CN110095674 A CN 110095674A CN 201810084947 A CN201810084947 A CN 201810084947A CN 110095674 A CN110095674 A CN 110095674A
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- China
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- terminals
- capacitor
- continuous detection
- voltage output
- direct voltage
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Fire Alarms (AREA)
Abstract
The invention belongs to circuit detection technique fields, more particularly to a kind of grounded continuous detection circuit, including firewire L and zero curve N, firewire L is connected to the first terminals A by capacitor Y1, zero curve N is connected to the first terminals A by capacitor Y2, first terminals A by electricity consumption connection to ground terminal PE, with being arranged in parallel resistance R1, capacitor C1 and direct voltage output route T in electric line；The input terminal in parallel of resistance R1, capacitor C1 and direct voltage output route T are the second terminals B, and the route between the second terminals B and the first terminals A is equipped with diode D1；Direct voltage output route T is for output smoothing DC voltage to Chip Microcomputer A/D simulation input interface.The beneficial effects of the present invention are: grounded continuous detection circuit of the invention can be integrated in charging device of electric automobile, meet standard GB/T/T18487.1-2015, can be realized reliable grounded continuous detection function.
Description
Technical field
The invention belongs to circuit detection technique fields, and in particular to a kind of grounded continuous detection circuit.
Background technique
Charging device of electric automobile is a kind of equipment of Vehicular battery charging for aiming at electric car, when being to battery charging
That uses has the power inverter of specific function.Currently, the standard GB/T of newest appearance/T18487.1-2015 requires electricity
There must be grounded continuous detection function inside electrical automobile charging unit, and have no dedicated grounded continuous detection electricity at present
Road.
Summary of the invention
The purpose of the present invention is overcoming defect of the existing technology, charging device of electric automobile can be integrated in by providing one kind
In, meet standard GB/T/T18487.1-2015, can be realized the grounded continuous of reliable grounded continuous detection function
Detection circuit.
The technical solution adopted by the present invention to solve the technical problems is: a kind of grounded continuous detection circuit comprising
Firewire L and zero curve N, firewire L are connected to the first terminals A by capacitor Y1, and zero curve N is connected to the first terminals by capacitor Y2
A, the first terminals A by electricity consumption connection to ground terminal PE, with being arranged in parallel resistance R1, capacitor C1 and straight in electric line
Flow voltage output lines T；The input terminal in parallel of resistance R1, capacitor C1 and direct voltage output route T are the second terminals B, the
Route between two terminals B and the first terminals A is equipped with diode D1；First terminals A, the anode of diode D1, two
The cathode of pole pipe D1 and the second terminals B are set gradually；Direct voltage output route T is for output smoothing DC voltage to monolithic
Machine AD simulation input interface.
Due to the logical exchange resistance direct current of capacitor Y1, voltage difference is formed between firewire L and ground terminal PE；Therefore in resistance R1 two
End, firewire L can induce alternating voltage to ground terminal PE；Diode D1 can end negative voltage, and alternating voltage passes through two poles
After pipe D1, by capacitor C1 pressure stabilizing；Finally, in direct voltage output route T, output smoothing DC voltage to Chip Microcomputer A/D is simulated
Input interface, single-chip microcontroller can directly judge whether ground connection is reliable by measuring voltage.
Grounded continuous detection circuit of the invention can be integrated in charging device of electric automobile, meet standard GB/T/
T18487.1-2015 can be realized reliable grounded continuous detection function.
Specifically, with being additionally provided with zener diode ZW1 in electric line, zener diode ZW1, resistance R1, capacitor C1 and straight
Stream voltage output lines T is arranged in parallel, the parallel connection of zener diode ZW1, resistance R1, capacitor C1 and direct voltage output route T
Input terminal is third terminals C, and diode D1 is set between third terminals C and the second terminals B.Zener diode ZW1 can
To protect voltage clamp in certain point, over-voltage breakdown capacitor C1 is avoided, further there is pressure stabilization function.
Further, capacitor C1 is ceramic disc capacitor, has the function of wear-resisting high direct voltage, voltage regulation result is good.
A kind of beneficial effect of grounded continuous detection circuit of the invention is: grounded continuous detection circuit of the invention
It can be integrated in charging device of electric automobile, meet standard GB/T/T18487.1-2015, can be realized reliable ground connection and connect
Continuous property detection function.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a kind of grounded continuous detection circuit figure of the invention.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
A kind of specific embodiment of grounded continuous detection circuit of the invention as shown in Figure 1 comprising firewire L and zero
Line N, firewire L are connected to the first terminals A by capacitor Y1, and zero curve N is connected to the first terminals A by capacitor Y2, and first connects
Line end A is by electricity consumption connection to ground terminal PE, and with being arranged in parallel in electric line, resistance R1, capacitor C1 and DC voltage are defeated
Route T out；The input terminal in parallel of resistance R1, capacitor C1 and direct voltage output route T are the second terminals B, the second terminals B
And the first route between terminals A is equipped with diode D1；First terminals A, the anode of diode D1, diode D1 it is negative
Pole and the second terminals B are set gradually；Direct voltage output route T simulates defeated for output smoothing DC voltage to Chip Microcomputer A/D
Incoming interface.
Due to the logical exchange resistance direct current of capacitor Y1, voltage difference is formed between firewire L and ground terminal PE；Therefore in resistance R1 two
End, firewire L can induce alternating voltage to ground terminal PE；Diode D1 can end negative voltage, and alternating voltage passes through two poles
After pipe D1, by capacitor C1 pressure stabilizing；Finally, in direct voltage output route T, output smoothing DC voltage to Chip Microcomputer A/D is simulated
Input interface, single-chip microcontroller can directly judge whether ground connection is reliable by measuring voltage.
The grounded continuous detection circuit of the present embodiment can be integrated in charging device of electric automobile, meet national standard
GB/T18487.1-2015 can be realized reliable grounded continuous detection function.
Specifically, with being additionally provided with zener diode ZW1 in electric line, zener diode ZW1, resistance R1, capacitor C1 and straight
Stream voltage output lines T is arranged in parallel, the parallel connection of zener diode ZW1, resistance R1, capacitor C1 and direct voltage output route T
Input terminal is third terminals C, and diode D1 is set between third terminals C and the second terminals B.Zener diode ZW1 can
To protect voltage clamp in certain point, over-voltage breakdown capacitor C1 is avoided, further there is pressure stabilization function.
Further, capacitor C1 is ceramic disc capacitor, has the function of wear-resisting high direct voltage, voltage regulation result is good.
It should be appreciated that described above, the specific embodiments are only for explaining the present invention, is not intended to limit the present invention.By
The obvious changes or variations that spirit of the invention is extended out are still in the protection scope of this invention.
Claims (3)
1. a kind of grounded continuous detection circuit, it is characterised in that: pass through capacitor Y1 including firewire L and zero curve N, the firewire L
It is connected to the first terminals A, the zero curve N the first terminals A, the first terminals A is connected to by capacitor Y2 and pass through use
Electric line is connected to ground terminal PE, described with being arranged in parallel resistance R1, capacitor C1 and direct voltage output route in electric line
T；The input terminal in parallel of the resistance R1, capacitor C1 and direct voltage output route T are the second terminals B, second wiring
The route between B and the first terminals A is held to be equipped with diode D1；The first terminals A, the anode of diode D1, two poles
The cathode of pipe D1 and the second terminals B are set gradually；The direct voltage output route T is for output smoothing DC voltage to list
Piece machine AD simulation input interface.
2. a kind of grounded continuous detection circuit according to claim 1, it is characterised in that: described with also being set in electric line
There is zener diode ZW1, the zener diode ZW1, resistance R1, capacitor C1 and direct voltage output route T are arranged in parallel, institute
The input terminal in parallel for stating zener diode ZW1, resistance R1, capacitor C1 and direct voltage output route T is third terminals C, institute
Diode D1 is stated to be set between third terminals C and the second terminals B.
3. a kind of grounded continuous detection circuit according to claim 2, it is characterised in that: the capacitor C1 is tile electricity
Hold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810084947.3A CN110095674A (en) | 2018-01-29 | 2018-01-29 | A kind of grounded continuous detection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810084947.3A CN110095674A (en) | 2018-01-29 | 2018-01-29 | A kind of grounded continuous detection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110095674A true CN110095674A (en) | 2019-08-06 |
Family
ID=67442467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810084947.3A Withdrawn CN110095674A (en) | 2018-01-29 | 2018-01-29 | A kind of grounded continuous detection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110095674A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419265A (en) * | 2008-12-05 | 2009-04-29 | 韩俊 | Signal generating circuit for detecting protective earthing connecting status |
| CN106066443A (en) * | 2016-06-07 | 2016-11-02 | 浙江医药高等专科学校 | The sample circuit of a kind of safety ground detector and safety ground detector |
| CN206311693U (en) * | 2016-11-07 | 2017-07-07 | 深圳巴斯巴科技发展有限公司 | A kind of ground connection of new-energy automobile charging box and wrong phase detecting circuit |
| CN206671461U (en) * | 2017-03-20 | 2017-11-24 | 深圳市思达仪表有限公司 | Grounding monitor circuit |
-
2018
- 2018-01-29 CN CN201810084947.3A patent/CN110095674A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419265A (en) * | 2008-12-05 | 2009-04-29 | 韩俊 | Signal generating circuit for detecting protective earthing connecting status |
| CN106066443A (en) * | 2016-06-07 | 2016-11-02 | 浙江医药高等专科学校 | The sample circuit of a kind of safety ground detector and safety ground detector |
| CN206311693U (en) * | 2016-11-07 | 2017-07-07 | 深圳巴斯巴科技发展有限公司 | A kind of ground connection of new-energy automobile charging box and wrong phase detecting circuit |
| CN206671461U (en) * | 2017-03-20 | 2017-11-24 | 深圳市思达仪表有限公司 | Grounding monitor circuit |
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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 | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190806 |
|
| WW01 | Invention patent application withdrawn after publication |