CN203596395U - Detection adaptor with suspension voltage detection function - Google Patents
Detection adaptor with suspension voltage detection function Download PDFInfo
- Publication number
- CN203596395U CN203596395U CN201320794300.2U CN201320794300U CN203596395U CN 203596395 U CN203596395 U CN 203596395U CN 201320794300 U CN201320794300 U CN 201320794300U CN 203596395 U CN203596395 U CN 203596395U
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- control circuit
- usb
- detection
- output
- plug
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model relates to a detection adaptor with the suspension voltage detection function. The detection adaptor is provided with a 3-pin alternating current input plug, a main control circuit board, a 2-pin output plug jack, a USB output port and a USB detection connecting line, wherein a basic power supply circuit, a control circuit and a suspension voltage detection circuit are arranged on the main control circuit board; a USB plug is at one end of the USB detection connecting line, and the other end of the USB detection connecting line is provided with two end branches, one end branch is connected with the suspension voltage detection circuit, and the other end branch is connected with the USB output port; the 3-pin alternating current input plug is respectively connected with the basic power supply circuit of the main control circuit board and the 2-pin output jack socket, and a normally closed relay is further connected between the 3-pin alternating current input plug and the 2-pin output jack socket; the normally closed relay is further connected with a control circuit on the main control circuit board. The detection adaptor with the suspension voltage detection function can detect suspension voltage between a charger output end and the ground in real time, and the input of the charger can be automatically switched off when dangerous voltage occurs.
Description
Technical field:
The utility model relates to power supply, technical field of charger products, refers in particular to a kind of detection adapter with suspended voltage measuring ability.
Background technology:
The Charger (portable round) of the electronic products such as most smart mobile phones, digital product is all 2pin, and their " ground wire " is to be connected on product casing, and this is not ground wire truly, therefore between charger and the earth, just has suspended voltage.In the ordinary course of things, suspended voltage is less, and due to the resistance approach infinity between charger (suspended voltage source) and the earth, so human body is at contact charging device or while using the electronic product charging, substantially do not have electric current to pass through human body, electric shock accidents can not occur.But under specific environment, suspended voltage is also detected more than the human safety voltage who exceedes 36V even reaches 220V, so just exists undoubtedly potential safety hazard.At present, after a lot of USB output chargers, connecing device housings most of is metal shell, and charger is in the time giving equipment charge, if charger electric leakage or user's staff under wet environment touch metal shell, civil power, human body, between the earth, form loop, electric shock or Danger Electric shock risk just likely occur.And in actual life, also frequently have because using the products such as the mobile phone that charging to be electrically shocked the even dead electric shock accidents that waits and occur.But there are not associated mechanisms or enterprise these to be taked to corresponding defensive measure always or do relevant improvement for product.
Utility model content:
The purpose of this utility model is the above-mentioned weak point of prior art, provides a kind of detection adapter with suspended voltage measuring ability, to realize safe charging.
The technical solution adopted in the utility model is: a kind of detection adapter with suspended voltage measuring ability, this detection adapter has 3pin and exchanges input plug, master control circuit plate, 2pin output plughole, USB output port and USB detection connecting line, and described master control circuit plate is provided with basic power supply circuits, control circuit and suspended voltage testing circuit; One end that described USB detects connecting line is USB plug, and the other end has two branch end, and one of them branch end is connected with described suspended voltage testing circuit, and another branch end is connected with described USB output port; Described 3pin exchanges input plug and is connected with basic power supply circuits and the 2pin output plughole of master control circuit plate respectively, and exchange between input plug and 2pin output plughole and be also connected with a normal closing type relay at 3pin, described normal closing type relay is also connected with the control circuit on master control circuit plate.
Particularly, described suspended voltage testing circuit includes two bridge rectifiers, a filter circuit, a voltage-stabiliser tube and a comparator, wherein, an input of each bridge rectifier connects its USB plug, another input end grounding by described USB detection connecting line; The output of each bridge rectifier is connected with the positive input terminal of comparator after circuit, voltage-stabiliser tube after filtering; The negative input end of comparator connects basic power supply circuits, and the output of comparator connects control circuit.
Comparator in described suspended voltage testing circuit is also connected with reset switch.
On described master control circuit plate, be also provided with the red led and the green indicating lamp that are connected with control circuit.
The detection adapter that the utility model band suspended voltage detects is to coordinate existing user's charger to use; it can detect the suspended voltage between charger output and the earth in real time; and judge its whether dangerous voltage; in the time occurring that the abnormal conditions such as charger electric leakage produce dangerous voltage; can automatically cut off the input of charger; stop power supply, thereby avoid occurring electric shock accidents, protection personal safety.
Accompanying drawing explanation:
Fig. 1 is the structured flowchart of detection adapter and the schematic diagram of charging method of the utility model band suspended voltage measuring ability;
Fig. 2 is the internal circuit schematic diagram of the detection adapter of the utility model band suspended voltage measuring ability.
Embodiment:
Below in conjunction with specific embodiments and the drawings, the utility model is further illustrated.
As shown in Fig. 1～Fig. 2, what the utility model disclosed is that a kind of detection adapter with suspended voltage measuring ability is realized safe charging.
Particularly, this detection adapter 1 has 3pin and exchanges input plug 11, master control circuit plate 12,2pin output plughole 13, adapter USB output port 14 and USB detection connecting line 15, and described master control circuit plate 12 is provided with basic power supply circuits 121, control circuit 122 and suspended voltage testing circuit 123; One end that described USB detects connecting line 15 is USB plug (being used for connecting the USB output port of user's charger 2), the other end has two branch end, one of them branch end is connected (making suspended voltage testing circuit 123 carry out voltage detecting to the USB output port of user's charger 2) with described suspended voltage testing circuit 123, another branch end is connected (the electric energy of the USB output port of user's charger 2 is led to the adapter USB output port 14 detecting on adapter 1) with the adapter USB output port 14 of described detection adapter 1; Described 3pin exchanges input plug 11 and is connected with basic power supply circuits 121 and the 2pin output plughole 13 of master control circuit plate 12 respectively, and exchange between input plug 11 and 2pin output plughole 13 and be also connected with a normal closing type relay K1 at 3pin, described normal closing type relay K1 is also connected with the control circuit 122 on master control circuit plate 12; In the time that suspended voltage testing circuit 123 detects that the USB output port voltage of user's charger 2 has extremely or exceedes safe voltage; suspended voltage testing circuit 123 sends signal and makes control circuit 122 control normal closing type relay K1 to open; cut off 3pin on detection adapter 1 and exchange the circuit between input plug 11 and 2pin output plughole 13; cut off the input of user's charger 2; adapter USB output port 14 outputs on the detection adapter 1 that makes the charger USB output port 22 of user's charger 2 and be attached thereto are zero, thereby guarantee user's personal safety.
In use, the 2pin input plug 21 of user's charger 2 is connected with the 2pin output port 13 that detects adapter 1, USB is detected to the USB plug of connecting line 15 and the charger USB output port 22 of user's charger 2 is connected, the USB plug of the USB charging wire of user's charger 2 autogamys is connected with the adapter USB output port 14 detecting on adapter 1, and the other end of the USB charging wire of user's charger 2 autogamys connects the electrical appliances such as mobile phone.
Particularly, described suspended voltage testing circuit 123 includes two bridge rectifier BD2/BD3, a filter circuit being made up of capacitor C 5 and resistance R 22, a voltage-stabiliser tube ZD1 and a comparator U2, wherein, an input of each bridge rectifier BD2/BD3 detects connecting line 15 by described USB and connects its USB plug, another input end grounding, to be connected with the charger USB output port 22 of user's charger 2 in use, record the USB+ of suspended voltage over the ground and the USB-of charger USB output port 22; The output of each bridge rectifier BD2/BD3 is connected with the positive input terminal of comparator U2 after circuit, voltage-stabiliser tube ZD1 after filtering; The negative input end of comparator U2 connects basic power supply circuits 121, and the output of comparator U2 connects control circuit 122.
On described master control circuit plate 12, be also provided with the red led and the green indicating lamp that are connected with control circuit 122.Wherein, red led LED1 lights detecting that voltage has when abnormal, and reminding user charger is inputted in off-state; Green indicating lamp LED2 lights under normal circumstances at voltage, and reminding user charger, in normal connection status, can be used safely.
In conjunction with the circuit diagram shown in Fig. 2, the specific works process that the utility model detects adapter is:
The suspended voltage over the ground of USB+/USB-connects voltage-stabiliser tube ZD1 after rectification, filtering, in the time that the suspended voltage over the ground of USB+/USB-is all less than the voltage of the voltage-stabiliser tube ZD1 other end, not conducting of voltage-stabiliser tube ZD1, therefore comparator anode is without input, its output output low level, now not conducting of diode D6, therefore not conducting of control relay circuit, normal closing type relay K1 does not work, and basic charging circuit keeps conducting luminous to product charging and green indicating lamp LED1.
In the time there are abnormal conditions, for example, as long as when the suspended voltage over the ground of USB+/USB-has one to be greater than reference voltage (the safe voltage 36V in the present embodiment), the breakdown conducting of voltage-stabiliser tube ZD1, and the anode input of device U2 as a comparison, now, the input of comparator anode is inputted higher than negative terminal, the output OUT2 output high level of comparator, now diode D6 conducting, red led LED2 also conducting is luminous, green indicating lamp LED1 is extinguished by short circuit, and normal closing type relay K1 conducting action disconnect, then make basic charging circuit disconnect, 2pin output plughole L2/N2 stops output, no longer power to user's charger 2, therefore the USB output port of user's charger 2 is not exported, just do not have the danger that electric shock occurs yet.
Comparator U2 in described suspended voltage testing circuit 123 is also connected with reset switch 16, after abnormal conditions are got rid of, press reset switch 16 and make comparator U2 output OUT2 and anode input short circuit, comparator U2 feeds back formation, because comparator U2 positive input voltage level is now lower than negative signal voltage level, comparator U2 reversion, output low level, control circuit 122 disconnects, and red LED lamp is extinguished, normal closing type relay K1 stops action and recovers normally off, thereby user can be recycled.
The detection adapter that the utility model band suspended voltage detects is to coordinate existing user's charger to use; it can detect the suspended voltage between charger output and the earth in real time; and judge its whether dangerous voltage; in the time occurring that the abnormal conditions such as charger electric leakage produce dangerous voltage; can automatically cut off the input of charger; stop power supply, thereby avoid occurring electric shock accidents, protection personal safety.
Claims (4)
1. the detection adapter with suspended voltage measuring ability, it is characterized in that: this detection adapter has 3pin and exchanges input plug, master control circuit plate, 2pin output plughole, USB output port and USB detection connecting line, and described master control circuit plate is provided with basic power supply circuits, control circuit and suspended voltage testing circuit; One end that described USB detects connecting line is USB plug, and the other end has two branch end, and one of them branch end is connected with described suspended voltage testing circuit, and another branch end is connected with described USB output port; Described 3pin exchanges input plug and is connected with basic power supply circuits and the 2pin output plughole of master control circuit plate respectively, and exchange between input plug and 2pin output plughole and be also connected with a normal closing type relay at 3pin, described normal closing type relay is also connected with the control circuit on master control circuit plate.
2. the detection adapter with suspended voltage measuring ability according to claim 1, it is characterized in that: described suspended voltage testing circuit includes two bridge rectifiers, a filter circuit, a voltage-stabiliser tube and a comparator, wherein, one input of each bridge rectifier detects connecting line by described USB and connects its USB plug, another input end grounding; The output of each bridge rectifier is connected with the positive input terminal of comparator after circuit, voltage-stabiliser tube after filtering; The negative input end of comparator connects basic power supply circuits, and the output of comparator connects control circuit.
3. the detection adapter with suspended voltage measuring ability according to claim 2, is characterized in that: the comparator in described suspended voltage testing circuit is also connected with reset switch.
4. the detection adapter with suspended voltage measuring ability according to claim 1, is characterized in that: on described master control circuit plate, be also provided with the red led and the green indicating lamp that are connected with control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320794300.2U CN203596395U (en) | 2013-12-04 | 2013-12-04 | Detection adaptor with suspension voltage detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320794300.2U CN203596395U (en) | 2013-12-04 | 2013-12-04 | Detection adaptor with suspension voltage detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596395U true CN203596395U (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320794300.2U Withdrawn - After Issue CN203596395U (en) | 2013-12-04 | 2013-12-04 | Detection adaptor with suspension voltage detection function |
Country Status (1)
| Country | Link |
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| CN (1) | CN203596395U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606717A (en) * | 2013-12-04 | 2014-02-26 | 东莞市东颂电子有限公司 | Anti-electric shock charging method and detection adapter with floating voltage detection function |
-
2013
- 2013-12-04 CN CN201320794300.2U patent/CN203596395U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606717A (en) * | 2013-12-04 | 2014-02-26 | 东莞市东颂电子有限公司 | Anti-electric shock charging method and detection adapter with floating voltage detection function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140514 Effective date of abandoning: 20151007 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |