CN206740945U - LED light bar detects circuit - Google Patents
LED light bar detects circuit Download PDFInfo
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- CN206740945U CN206740945U CN201720057362.3U CN201720057362U CN206740945U CN 206740945 U CN206740945 U CN 206740945U CN 201720057362 U CN201720057362 U CN 201720057362U CN 206740945 U CN206740945 U CN 206740945U
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Abstract
The utility model provides a kind of LED light bar detection circuit, including the short-circuit detecting module of common ground connection, detection of electrical leakage module and power supply, the short-circuit detecting module are provided with positive terminal and negative terminal, be connected respectively with the positive pole and negative pole of LED light bar to be measured；The detection of electrical leakage module is provided with first voltage detection terminal and second voltage detection terminal, wherein, first voltage detection terminal is connected to the negative pole of LED light bar to be measured, and second voltage detection terminal is connected to the bottom plate of LED light bar；The power supply is connected with detection of electrical leakage module.The beneficial effects of the utility model are：Resistance is obtained by the voltage in detection of electrical leakage module, the bottom plate of LED light bar is detected, judges that LED light bar whether there is drain conditions according to the powered situation of the bottom plate of LED light bar, adds the ability intercepted to unqualified LED light bar.
Description
Technical field
LED detection field of circuit technology is the utility model is related to, relates in particular to a kind of LED light bar detection circuit.
Background technology
LED lamp bead is because with energy saving, low-carbon environment-friendly, no stroboscopic, radiationless, brightness is high, is generating heat low advantage just
In the fluorescent lamp of gradual substitution on the market, its application constantly expands, although LED haves many advantages, such as, if made
Or misoperation, it may appear that the phenomenon of obtained LED light bar electric leakage.The reason for LED leaks electricity has a lot：Such as electrostatic damage, chip
Board debugging is improper when electric leakage itself, elargol problem, routing are welded, encapsulate partially, encapsulate after artificial origin cause to leak electricity etc., therefore
Lamp bar assembling is both needed to carry out electro-detection after completing, can shipment after detection is qualified.
Traditional LED light bar detects circuit as shown in figure 1, LED light bar to be detected is connected into connector, so that LED
The positive pole of lamp bar is connected with positive source, and the negative pole of LED light bar is connected to external LED positive pole, and external LED negative pole is connected to
The negative pole of power supply, after energization, if the negative pole of LED light bar occurs short-circuit, external LED does not work, if the positive pole of LED light bar occurs
When short-circuit, LED light bar and external LED do not work, and the whether up-to-standard of lamp bar can be judged by above-mentioned phenomenon, if but just
Negative pole drain conditions do not influence lamp bar it is luminous when, can not accurate judgement LED light bar whether have leaky, be easily caused bad
Product outflows.
Utility model content
Technical problem to be solved in the utility model is：Lamp bar can accurately be detected with the presence or absence of electric leakage feelings by providing one kind
Condition, lifting detect circuit to a kind of LED light bar for the lamp bar interdiction capability that leaks electricity.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：Short circuit inspection including common ground connection
Survey module, detection of electrical leakage module and power supply, the short-circuit detecting module are provided with positive terminal and negative terminal, respectively with it is to be measured
The positive pole of LED light bar is connected with negative pole；The detection of electrical leakage module is provided with first voltage detection terminal and second voltage detects
Terminal, wherein, first voltage detection terminal is connected to the negative pole of LED light bar to be measured, and second voltage detection terminal is connected to LED light bar
Bottom plate；The power supply is connected with detection of electrical leakage module.
Further, the short-circuit detecting module includes external LED and the short-circuit detecting being arranged in series with LED light bar to be measured
Power supply, the positive pole of short-circuit detecting power supply are connected with the positive terminal of short-circuit detecting module, the negative pole of short-circuit detecting power supply with it is external
LED negative pole is connected, and external LED positive pole is connected with the negative terminal of short-circuit detecting module.
Further, the detection of electrical leakage module includes first voltage acquisition resistance, second voltage obtains resistance, processing is single
Member and output unit, the end that the first voltage obtains resistance is connected to first voltage detection terminal, another to be terminated at processing list
One input of member；The end that second voltage obtains resistance is connected to second voltage detection terminal, another to be terminated at processing unit
Another input；The output end of processing unit is connected with output unit.
Further, the input of the first voltage acquisition resistance is connected with the first resistance to earth, output end pair over the ground
Ground is connected with the first direct-to-ground capacitance；The second voltage obtains resistance input and is connected with the second resistance to earth, output end over the ground
The second direct-to-ground capacitance is connected with over the ground.
Further, the output unit includes the first relay, the second relay, PASS indicator lamps, FAIL indicator lamps
And buzzer, wherein, the shut-off of the first Control PASS indicator lamps；The FAIL instructions that second Control is arranged in series
The shut-off of lamp and buzzer.
The beneficial effects of the utility model are：Resistance is obtained by the voltage in detection of electrical leakage module, to LED light bar
Bottom plate is detected, and is judged that LED light bar whether there is drain conditions according to the powered situation of the bottom plate of LED light bar, is added
The ability intercepted to unqualified LED light bar.
Brief description of the drawings
Concrete structure of the present utility model is described in detail below in conjunction with the accompanying drawings：
Fig. 1 is the electrical block diagram that traditional LED light bar detects circuit；
Fig. 2 is circuit function module schematic diagram of the present utility model；
Fig. 3 is the electrical block diagram that LED light bar of the present utility model detects circuit；
Reference is expressed as in figure：1- short-circuit detecting modules；2- detection of electrical leakage modules；3- LED light bars to be measured；4- processing
Unit；5- output units；21- first voltages obtain resistance；22- second voltages obtain resistance；23- metal baffles.
Embodiment
To describe technology contents of the present utility model, construction feature, the objects and the effects in detail, below in conjunction with implementation
Mode simultaneously coordinates accompanying drawing to be explained in detail.
Fig. 2 and Fig. 3 is referred to, a kind of LED light bar detects circuit, including the short-circuit detecting module 1 of common ground connection, electric leakage
Detection module 2 and power supply 6, the short-circuit detecting module 1 are provided with positive terminal and negative terminal, respectively with LED light bar 3 to be measured
Positive pole is connected with negative pole；The detection of electrical leakage module 2 is provided with first voltage detection terminal and second voltage detection terminal, its
In, first voltage detection terminal is connected to the negative pole of LED light bar to be measured, and second voltage detection terminal is connected to the bottom of LED light bar to be measured
Plate；The power supply 6 is connected with detection of electrical leakage module 2.
It was found from foregoing description, the beneficial effects of the utility model are：Obtained by the voltage in detection of electrical leakage module
Resistance, the bottom plate of LED light bar to be measured is detected, LED to be measured is judged according to the powered situation of the bottom plate of LED light bar to be measured
Lamp bar whether there is drain conditions, add the ability intercepted to unqualified LED light bar.
Embodiment 1
The short-circuit detecting module 1 includes the external LED and short-circuit detecting power supply being arranged in series with LED light bar 3 to be measured, short
The positive pole of road detection power supply is connected with the positive terminal of short-circuit detecting module 1, and the negative pole of short-circuit detecting power supply is negative with external LED's
Extremely it is connected, external LED positive pole is connected with the negative terminal of short-circuit detecting module 1.
By the way that external LED and LED light bar to be measured are arranged in series, it can quickly judge that the short circuit of LED light bar to be measured is asked
Topic, when the negative pole of LED light bar to be measured is with bottom plate short circuit, LED light bar to be measured is bright, and external LED does not work；When LED light bar to be measured
When positive pole is with bottom plate short circuit, LED light bar to be measured does not work, and external LED does not also work.
Embodiment 2
The detection of electrical leakage module 2 includes first voltage and obtains resistance 21, second voltage acquisition resistance 22, processing unit 4
With output unit 5, the end that the first voltage obtains resistance 21 is connected to first voltage detection terminal, another to be terminated at processing list
One input of member 4；The end that second voltage obtains resistance 22 is connected to second voltage detection terminal, another to be terminated at processing list
Another input of member 4；The output end of processing unit 4 is connected with output unit 5.
Processing unit obtains resistance by first voltage can detect the voltage condition of LED light bar negative pole to be measured, if to be measured
There are short-circuit conditions in LED light bar, i.e., when the voltage of LED light bar negative pole to be measured is zero, processing unit can export not to output unit
Qualifying signal；
Processing unit can detect the voltage condition of the bottom plate of LED light bar to be measured by second voltage acquisition resistance, if treating
When the bottom plate of survey LED light bar carries voltage, then processing unit can export unqualified signal to output unit, in order to ensure the second electricity
Pressure obtains resistance and the contacts baseplate of LED light bar to be measured is good, can obtain resistance input in second voltage and set metal baffle
23, pass through the contacts baseplate of metal baffle 23 and LED light bar to be measured.
Embodiment 3
The input that the first voltage obtains resistance 21 is connected with the first resistance to earth over the ground, and output end is connected with over the ground
First direct-to-ground capacitance；The second voltage obtains the input of resistance 22 and is connected with the second resistance to earth over the ground, and output end connects over the ground
It is connected to the second direct-to-ground capacitance.
The input that resistance is obtained in voltage sets resistance to earth, and the output end that resistance is obtained in voltage sets electricity over the ground
Hold, the reliability of voltage signal input processing unit can be improved.
Embodiment 4
The output unit 5 includes the first relay, the second relay, PASS indicator lamps, FAIL indicator lamps and buzzer,
Wherein, the shut-off of the first Control PASS indicator lamps；The FAIL indicator lamps and buzzing that second Control is arranged in series
The shut-off of device.
When processing unit exports qualifying signal, the work of the first relay, PASS indicator lamps are switched on power, refer to PASS
Show that lamp lights；
When processing unit exports unqualified signal, the work of the second relay, FAIL indicator lamps are connected into electricity with buzzer
Source, light FAIL indicator lamps, buzzer warning.
Embodiment of the present utility model is the foregoing is only, not thereby limits the scope of the claims of the present utility model, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical areas, similarly it is included in scope of patent protection of the present utility model.
Claims (5)
1. a kind of LED light bar detects circuit, it is characterised in that：Short-circuit detecting module, detection of electrical leakage module including common ground connection
And power supply, the short-circuit detecting module are provided with positive terminal and negative terminal, respectively with the positive pole and negative pole phase of LED light bar to be measured
Connection；The detection of electrical leakage module is provided with first voltage detection terminal and second voltage detection terminal, wherein, first voltage detection
Terminal is connected to the negative pole of LED light bar to be measured, and second voltage detection terminal is connected to the bottom plate of LED light bar；The power supply is examined with electric leakage
Survey module connection.
2. LED light bar as claimed in claim 1 detects circuit, it is characterised in that：The short-circuit detecting module include with it is to be measured
The external LED and short-circuit detecting power supply that LED light bar is arranged in series, the positive pole of short-circuit detecting power supply and the positive pole of short-circuit detecting module
Terminal is connected, and the negative pole of short-circuit detecting power supply is connected with external LED negative pole, external LED positive pole and short-circuit detecting module
Negative terminal is connected.
3. LED light bar as claimed in claim 1 detects circuit, it is characterised in that：The detection of electrical leakage module includes the first electricity
Pressure obtains resistance, second voltage obtains resistance, processing unit and output unit, and the end that the first voltage obtains resistance is connected to
First voltage detection terminal, an another input for being terminated at processing unit；The end that second voltage obtains resistance is connected to the
Two voltage detection terminals, another another input for being terminated at processing unit；The output end of processing unit and output unit phase
Even.
4. LED light bar as claimed in claim 3 detects circuit, it is characterised in that：The first voltage obtains the input of resistance
End is connected with the first resistance to earth over the ground, and output end is connected with the first direct-to-ground capacitance over the ground；It is defeated that the second voltage obtains resistance
Enter end and be connected with the second resistance to earth over the ground, output end is connected with the second direct-to-ground capacitance over the ground.
5. LED light bar as claimed in claim 3 detects circuit, it is characterised in that：The output unit include the first relay,
Second relay, PASS indicator lamps, FAIL indicator lamps and buzzer, wherein, the shut-off of the first Control PASS indicator lamps；
The shut-off of FAIL indicator lamps and buzzer that second Control is arranged in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720057362.3U CN206740945U (en) | 2017-01-18 | 2017-01-18 | LED light bar detects circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720057362.3U CN206740945U (en) | 2017-01-18 | 2017-01-18 | LED light bar detects circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206740945U true CN206740945U (en) | 2017-12-12 |
Family
ID=60556103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720057362.3U Active CN206740945U (en) | 2017-01-18 | 2017-01-18 | LED light bar detects circuit |
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| CN (1) | CN206740945U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110764018A (en) * | 2019-10-16 | 2020-02-07 | 六安市国能光电照明有限公司 | High-power LED lamp leakage screening instrument |
-
2017
- 2017-01-18 CN CN201720057362.3U patent/CN206740945U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110764018A (en) * | 2019-10-16 | 2020-02-07 | 六安市国能光电照明有限公司 | High-power LED lamp leakage screening instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230117 Address after: No. 71, Fengming North Road, Wuhu Area, Free Trade Pilot Zone, Wuhu City, Anhui Province, 241007 Patentee after: WUHU JUFEI PHOTOELECTRIC TECHNOLOGY Co.,Ltd. Address before: 518000 Building C, 1-3 and E, Building 4, Egongling Industrial Zone, Egongling Community, Pinghu Street, Longgang District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN JUFEI OPTOELECTRONICS Co.,Ltd. |
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| TR01 | Transfer of patent right |