CN106714420A - Circuit for controlling stable output of lamp tube intensity - Google Patents

Circuit for controlling stable output of lamp tube intensity Download PDF

Info

Publication number
CN106714420A
CN106714420A CN201611169617.1A CN201611169617A CN106714420A CN 106714420 A CN106714420 A CN 106714420A CN 201611169617 A CN201611169617 A CN 201611169617A CN 106714420 A CN106714420 A CN 106714420A
Authority
CN
China
Prior art keywords
circuit
fluorescent tube
analog switch
digital control
exported
Prior art date
Application number
CN201611169617.1A
Other languages
Chinese (zh)
Inventor
陈耀进
Original Assignee
上海希格玛高技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 上海希格玛高技术有限公司 filed Critical 上海希格玛高技术有限公司
Priority to CN201611169617.1A priority Critical patent/CN106714420A/en
Publication of CN106714420A publication Critical patent/CN106714420A/en

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B47/00Circuit arrangements for operating light sources in general, i.e. where the type of the light source is not relevant
    • H05B47/10Controlling the light source
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B47/00Circuit arrangements for operating light sources in general, i.e. where the type of the light source is not relevant
    • H05B47/20Responsive to malfunctions or to light source life; for protection

Abstract

The invention discloses a circuit for controlling stable output of the lamp tube intensity, which comprises a digital control analog switch, a lamp tube temperature measuring circuit, a main control chip, a lamp tube voltage measuring circuit, a voltage conversion circuit, an overvoltage and short circuit detection circuit and a sampling circuit, wherein the lamp tube temperature measuring circuit is connected with an end A of the digital control analog switch, the lamp tube voltage measuring circuit is connected with the overvoltage and short circuit detection circuit, the overvoltage and short circuit detection circuit is connected with an end D of the digital control analog switch, the voltage conversion circuit is connected with an end C of the digital control analog switch, the sampling circuit is connected with the main control chip, and the main control chip is connected with a common end of the digital control analog switch. The circuit for controlling stable output of the lamp tube intensity detects whether a lamp tube is turned on or not while controlling the lamp tube intensity, and detects the current operating temperature of the lamp tube. In addition, the circuit disclosed by the invention can detect whether two lines of the lamp tube are short-circuited or open-circuited, and can better be compatible with a civil battery.

Description

A kind of circuit for controlling fluorescent tube intensity stabilization to export

Technical field

The present invention relates to lamp tube control circuit, more particularly to a kind of circuit for controlling fluorescent tube intensity stabilization to export.

Background technology

Emergency light is the general name of the light fixture of emergency lighting, and when there is emergency, guiding trapped personnel is evacuated or opened up Open rescue action and set.But in daily inspection, emergency light often has many, such as the intensity of fluorescent tube The output that can not stablize, causes lighting tube brightness flickering, or even can not illuminate;Cannot detect whether fluorescent tube is lighted, also without Method measures the Current Temperatures of fluorescent tube, it is impossible to judge the state of fluorescent tube;When fluorescent tube cannot be lighted, it is impossible to detect fluorescent tube whether two Line short circuit or open circuit, maintenance is not utilized.In addition, the general incompatible Civil battery of emergency light.

Therefore, those skilled in the art is devoted to developing a kind of circuit for controlling fluorescent tube intensity stabilization to export, to solve Above mentioned problem.

The content of the invention

In view of the drawbacks described above of prior art, it is strong that the technical problems to be solved by the invention are to provide a kind of control fluorescent tube The circuit of degree stabilization output, while fluorescent tube intensity is controlled, whether detecting fluorescent tube is lit, the current work temperature of detection fluorescent tube Degree, and can detect fluorescent tube whether the short circuit of two lines or open circuit, more can compatible Civil battery.

To achieve the above object, the invention provides a kind of circuit for controlling fluorescent tube intensity stabilization to export, including numeral control Analog switch processed, lamp hole temperature measuring circuit, main control chip, light tube electric voltage measuring circuit, voltage conversion circuit, overvoltage and short circuit Detection circuit and sample circuit;Wherein, lamp hole temperature measuring circuit is connected with the A ends of digital control analog switch, light tube electric voltage Measuring circuit is connected with overvoltage and short-circuit detecting circuit, the D ends phase of over-pressed and short-circuit detecting circuit and digital control analog switch Even, voltage conversion circuit is connected with the C-terminal of digital control analog switch, and sample circuit is connected with main control chip, main control chip and The common end of digital control analog switch is connected.

Further, digital control analog switch selects the digital control analog switch of difference four-way.

Further, lamp hole temperature measuring circuit includes negative temperature thermistor, negative temperature thermistor and sampling resistor R13 is in parallel, is connected with resistance R26, R27, and resistance R26, R27 select high-ohmic resistor.

Further, overvoltage and short-circuit detecting circuit include unilateral diode D2, the anode and fluorescent tube of unilateral diode D2 Tension measuring circuit is connected, the negative terminal connection high-ohmic resistor of unilateral diode D2.

Further, light tube electric voltage measuring circuit is set to be connected with fluorescent tube, and fluorescent tube high-frequency and high-voltage and input is low Pressure connection.

Further, voltage conversion circuit is set to be connected with main control chip pin by digital control analog switch.

Further, also including key circuit, the key circuit includes the first key circuit, the second key circuit, the Three key circuits, the first key circuit includes resistance R22 and the first button, and the second key circuit is pressed including resistance R23 and second Key, the 3rd key circuit includes resistance R24 and the 3rd button, and the first key circuit ground connection, the second key circuit is grounded, and the 3rd presses Key circuit is grounded.

Further, also including digital pipe display circuit.

Further, lamp hole temperature measuring circuit also includes temp probe.

Further, temp probe is popped one's head in intensity and replaced.

The circuit of control fluorescent tube intensity stabilization output of the present invention has the following technical effect that:

1st, the stabilization output of fluorescent tube intensity can be controlled, and to the stabilization output of variety classes fluorescent tube intensity, is conducive to The present invention is applying upper accurate output;

2nd, whether detecting fluorescent tube is lit;

3rd, the current operating temperature of detecting fluorescent tube;

4th, detection fluorescent tube whether two lines short circuit or open circuit;

5th, compatible Civil battery, such as battery of mobile phone;

6th, yield is high, is easy to variety classes used interchangeably.

The technique effect of design of the invention, concrete structure and generation is described further below with reference to accompanying drawing, with It is fully understood from the purpose of the present invention, feature and effect.

Brief description of the drawings

Fig. 1 is the lamp hole temperature measurement of the circuit of the control fluorescent tube intensity stabilization output of a preferred embodiment of the invention Circuit diagram;

Fig. 2 is the light tube electric voltage measurement of the circuit of the control fluorescent tube intensity stabilization output of a preferred embodiment of the invention Circuit diagram;

Fig. 3 is the over-pressed and short-circuit inspection of the circuit of the control fluorescent tube intensity stabilization output of a preferred embodiment of the invention Slowdown monitoring circuit schematic diagram;

Fig. 4 is the voltage conversion circuit of the circuit of the control fluorescent tube intensity stabilization output of a preferred embodiment of the invention Schematic diagram;

Fig. 5 is that the main control chip of the circuit of the control fluorescent tube intensity stabilization output of a preferred embodiment of the invention is illustrated Figure;

Fig. 6 is that the sample circuit of the circuit of the control fluorescent tube intensity stabilization output of a preferred embodiment of the invention is illustrated Figure.

Specific embodiment

A preferred embodiment of the invention provides a kind of circuit for controlling fluorescent tube intensity stabilization to export, including digital control Analog switch, lamp hole temperature measuring circuit, main control chip, light tube electric voltage measuring circuit, voltage conversion circuit, overvoltage and short circuit inspection Slowdown monitoring circuit and sample circuit;Wherein, lamp hole temperature measuring circuit is connected with the A ends of digital control analog switch, and light tube electric voltage is surveyed Amount circuit is connected with overvoltage and short-circuit detecting circuit, and overvoltage and short-circuit detecting circuit are connected with the D ends of digital control analog switch, Voltage conversion circuit is connected with the C-terminal of digital control analog switch, and sample circuit is connected with main control chip, main control chip with numeral The common end of analog switch is controlled to be connected.

Digital control analog switch selects the digital control analog switch of difference four-way, it is preferable that selection CD4052.

As shown in figure 1, lamp hole temperature measuring circuit includes negative temperature thermistor R1, negative temperature thermistor R1 and sampling Resistance R13 is in parallel, is connected with resistance R26, R27, and resistance R26, R27 select high-ohmic resistor.Due to ultraviolet fluorescent lamp operationally Send substantial amounts of heat, it is contemplated that internal various components can be influenceed substantially by temperature change, while temperature is more than a timing, Fluorescent lamp is automatically switched off, to reach the effect of overheat protector, meanwhile, low-power consumption is ensured again, because lamp hole temperature measuring circuit Also include temp probe, it is preferable that temp probe is from high accuracy, the temp probe of high stability;Temp probe will measure temperature Degree sensing, and temperature sense is delivered to main control chip, and converted by technology, obtain the operating temperature of current fluorescent tube.Resistance R26, R27 select high resistance, it is preferable that be 100 ohm, and resistance R26, R27 have temperature control function, temperature range control Between 10 °~60 °.Wherein negative temperature thermistor Rt is consistent with place environment temperature, meanwhile, it be placed on fluorescent tube and Reflector lower section, such fluorescent tube heating radiates reflector, and Rt can reflect that lamp hole temperature changes.Temp probe is popped one's head in intensity Instead of.

As shown in Fig. 2 light tube electric voltage measuring circuit is set to be connected with fluorescent tube, and fluorescent tube high-frequency and high-voltage and input is low Pressure connection.Electric capacity C20 two ends are connected with the two ends of fluorescent tube 12, two poles in one end and overvoltage and short-circuit detecting circuit of electric capacity C20 Pipe D2 anodes are connected.Light tube electric voltage measuring circuit includes the loop of magnetic field energy 1, the loop of magnetic field energy 2, drive signal Q1 and drive signal Q2, the loop of magnetic field energy 1 includes 1 end, 2 ends, 4 ends, 6 ends and 9 ends, and the loop of magnetic field energy 2 includes 7 ends, 8 ends, 9 ends and 10 ends, wherein 1 End and 6 ends ground connection, 2 ends, 4 ends, 7 ends and 8 termination power anodes.Drive signal Q1 includes a light emitting diode and drive signal Q2 includes a light emitting diode.Electric capacity C20 is 6.8nF/1200V.

As shown in figure 3, overvoltage and short-circuit detecting circuit include unilateral diode D2, the anode and fluorescent tube of unilateral diode D2 Tension measuring circuit is connected, the negative terminal connection high-ohmic resistor R47 of unilateral diode D2, it is preferable that R47 selects 10M ohm.Resistance R47 connects with resistance R10, R11, R12, and is grounded;Resistance R47 is grounded after being connected with electric capacity C8, and resistance R10 and electric capacity C19 goes here and there It is grounded after connection.Overvoltage and short-circuit detecting circuit can not influence fluorescent lamp operation.Unilateral diode D2 is just terminating fluorescent tube high pressure side, For positive half-wave shaping, then by R47 high-impedance resistors isolate (and being effectively isolated interference), and C9, R10, C19, R11, R12 steady voltage and partial pressure, form at R11 two ends and form certain association with lamp tube ends.Adopted by voltage on R11 again Sample (as shown in Figure 6), can significantly offer an explanation open circuit or short circuit phenomenon on software.

As shown in figure 4, in voltage conversion circuit resistance R29 it is in parallel with electric capacity C11, connected with R25, R19 respectively, then R19 is grounded;One end of electric capacity C10 is connected with resistance R33, and the other end of R33 is connected with electric capacity C12, electric capacity C12 and electric capacity C10 One end ground connection of connection, one end that electric capacity C10 is connected with resistance R33 is connected with resistance R30, the other end and input voltage of R30 It is connected.

As shown in figure 5, the pin 26 of main control chip is grounded, pin 25 is connected with electric capacity C7, and pin 21 is connected with electric capacity C2, Pin 18 is connected with electric capacity C3.

As shown in Figure 4 and Figure 5, voltage conversion circuit is set to connect by digital control analog switch and main control chip pin Connect.Output voltage, input voltage and the temperature sense that lamp hole temperature measuring circuit and light tube electric voltage measuring circuit are measured are by electricity Pressure translation circuit is input on the chip of digital control analog switch, then is connected by digital control analog switch and master chip pin Connect.

Light tube electric voltage measuring circuit includes voltage sensor, light tube electric voltage signal can be delivered to by voltage conversion circuit Main control chip, main control chip is converted by technology and obtains the current voltage of fluorescent tube.Input voltage, working frequency in programming And work pulsewidth, while lamp hole temperature has certain relation with intensity, budget fluorescent tube obtains power, then the work shape for obtaining fluorescent tube Condition.

Main control chip compares the normal temperature in current temperature information and programming, while becoming according to input voltage Change, the working frequency and work pulsewidth of fluorescent tube are adjusted with the numerical value for comparing, the intensity output to fluorescent tube is compensated, such as lamp The Current Temperatures of pipe are 50 DEG C, and normal temperature is 45 DEG C, and main control chip will increase certain power back-off:

A:Input voltage it is constant and work pulsewidth it is constant when, working frequency increase can increase power output.

B:Input voltage is constant and during constant working frequency, work pulsewidth increase can increase power output.

C:Working frequency it is constant and and work pulsewidth it is constant when, input voltage increase can also increase power output.

To keep fluorescent tube certain voltage, while when voltage and temperature are into certain relation, it is possible to by increasing and decreasing power output, Meet the stabilization output of fluorescent tube intensity.

A kind of circuit of control fluorescent tube intensity stabilization output that the present invention is provided also includes key circuit, the key circuit Including the first key circuit, the second key circuit, the 3rd key circuit, the first key circuit includes resistance R22 and the first button, Second key circuit includes resistance R23 and the second button, and the 3rd key circuit includes resistance R24 and the 3rd button, the first button Circuit ground, the second key circuit ground connection, the 3rd key circuit ground connection.

A kind of circuit of control fluorescent tube intensity stabilization output that the present invention is provided also includes digital pipe display circuit.And can To use civilian lithium battery, such as mobile phone 3.7v lithium batteries.

Fluorescent tube intensity is by fluorescent tube institute wasted work rate, lamp works temperature, lamp tube ends voltage influence, and fluorescent tube institute wasted work rate Influenceed by input voltage size, working frequency size and work pulsewidth size.

Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without Need creative work just can make many modifications and variations with design of the invention.Therefore, all technologies in the art Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea Technical scheme, all should be in the protection domain being defined in the patent claims.

Claims (10)

1. the circuit that a kind of control fluorescent tube intensity stabilization is exported, it is characterised in that including digital control analog switch, lamp hole temperature Measuring circuit, main control chip, light tube electric voltage measuring circuit, voltage conversion circuit, overvoltage and short-circuit detecting circuit and sample circuit; Wherein, the lamp hole temperature measuring circuit is connected with the A ends of the digital control analog switch, the light tube electric voltage measuring circuit Be connected with the overvoltage and short-circuit detecting circuit, the D of described over-pressed and short-circuit detecting circuit and the digital control analog switch End is connected, and the voltage conversion circuit is connected with the C-terminal of the digital control analog switch, the sample circuit and the master control Chip is connected, and the main control chip is connected with the common end of the digital control analog switch.
2. the circuit that a kind of control fluorescent tube intensity stabilization as claimed in claim 1 is exported, it is characterised in that described digital control Analog switch selects the digital control analog switch of difference four-way.
3. the circuit that a kind of control fluorescent tube intensity stabilization as claimed in claim 1 is exported, it is characterised in that the lamp hole temperature Measuring circuit includes negative temperature thermistor, and the negative temperature thermistor is in parallel with sampling resistor R13, with resistance R26, R27 Series connection, described resistance R26, R27 select high-ohmic resistor.
4. the circuit that a kind of control fluorescent tube intensity stabilization as claimed in claim 1 is exported, it is characterised in that described over-pressed and short Alignment detection circuit includes unilateral diode D2, and the anode of the unilateral diode D2 is connected with the light tube electric voltage measuring circuit, The negative terminal connection high-ohmic resistor of the unilateral diode D2.
5. the circuit that a kind of control fluorescent tube intensity stabilization as claimed in claim 1 is exported, it is characterised in that the light tube electric voltage Measuring circuit is set to be connected with fluorescent tube, and fluorescent tube high-frequency and high-voltage is connected with input low pressure.
6. the circuit that a kind of control fluorescent tube intensity stabilization as claimed in claim 1 is exported, it is characterised in that the voltage transformation Circuit is set to be connected with main control chip pin by digital control analog switch.
7. the circuit that a kind of control fluorescent tube intensity stabilization as claimed in claim 6 is exported, it is characterised in that also including button electricity Road, the key circuit includes the first key circuit, the second key circuit, the 3rd key circuit, the first key circuit bag Resistance R22 and the first button are included, second key circuit includes resistance R23 and the second button, the 3rd key circuit bag Include resistance R24 and the 3rd button, the first key circuit ground connection, the second key circuit ground connection, the 3rd button electricity Road is grounded.
8. the circuit that a kind of control fluorescent tube intensity stabilization as claimed in claim 7 is exported, it is characterised in that also including charactron Display circuit.
9. the circuit that a kind of control fluorescent tube intensity stabilization as claimed in claim 3 is exported, it is characterised in that the lamp hole temperature Measuring circuit also includes temp probe.
10. the circuit that a kind of control fluorescent tube intensity stabilization as claimed in claim 9 is exported, it is characterised in that the temperature is visited Head is popped one's head in intensity and replaced.
CN201611169617.1A 2016-12-16 2016-12-16 Circuit for controlling stable output of lamp tube intensity CN106714420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611169617.1A CN106714420A (en) 2016-12-16 2016-12-16 Circuit for controlling stable output of lamp tube intensity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611169617.1A CN106714420A (en) 2016-12-16 2016-12-16 Circuit for controlling stable output of lamp tube intensity

Publications (1)

Publication Number Publication Date
CN106714420A true CN106714420A (en) 2017-05-24

Family

ID=58939086

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611169617.1A CN106714420A (en) 2016-12-16 2016-12-16 Circuit for controlling stable output of lamp tube intensity

Country Status (1)

Country Link
CN (1) CN106714420A (en)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101909392A (en) * 2010-08-25 2010-12-08 四川省桑瑞光辉标识系统制造有限公司 LED intelligent dynamic control system and control method
CN101925214A (en) * 2009-06-17 2010-12-22 海洋王照明科技股份有限公司 LED constant current circuit and method
CN101969725A (en) * 2010-10-11 2011-02-09 复旦大学 Intelligent general light-emitting diode (LED) street lamp illuminating power supply system
WO2011055533A1 (en) * 2009-11-04 2011-05-12 ローム株式会社 Circuit and method for driving led string for backlight, and backlight and display device using the circuit
CN201909684U (en) * 2011-01-18 2011-07-27 浙江恒强科技有限公司 Temperature measuring circuit
CN103200748A (en) * 2013-04-27 2013-07-10 光明国际(镇江)电气有限公司 LED (light-emitting diode) road lamp circuit capable of automatically adjusting current, voltage and temperature
CN103490380A (en) * 2012-06-13 2014-01-01 北海市深蓝科技发展有限责任公司 Current limit control method for currents
CN204498429U (en) * 2015-04-07 2015-07-22 甘肃光辉太阳能科技有限公司 High power DC LED constant current driving power
CN106211491A (en) * 2015-04-29 2016-12-07 海洋王(东莞)照明科技有限公司 A kind of LED illumination circuit and lighting

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101925214A (en) * 2009-06-17 2010-12-22 海洋王照明科技股份有限公司 LED constant current circuit and method
WO2011055533A1 (en) * 2009-11-04 2011-05-12 ローム株式会社 Circuit and method for driving led string for backlight, and backlight and display device using the circuit
CN101909392A (en) * 2010-08-25 2010-12-08 四川省桑瑞光辉标识系统制造有限公司 LED intelligent dynamic control system and control method
CN101969725A (en) * 2010-10-11 2011-02-09 复旦大学 Intelligent general light-emitting diode (LED) street lamp illuminating power supply system
CN201909684U (en) * 2011-01-18 2011-07-27 浙江恒强科技有限公司 Temperature measuring circuit
CN103490380A (en) * 2012-06-13 2014-01-01 北海市深蓝科技发展有限责任公司 Current limit control method for currents
CN103200748A (en) * 2013-04-27 2013-07-10 光明国际(镇江)电气有限公司 LED (light-emitting diode) road lamp circuit capable of automatically adjusting current, voltage and temperature
CN204498429U (en) * 2015-04-07 2015-07-22 甘肃光辉太阳能科技有限公司 High power DC LED constant current driving power
CN106211491A (en) * 2015-04-29 2016-12-07 海洋王(东莞)照明科技有限公司 A kind of LED illumination circuit and lighting

Similar Documents

Publication Publication Date Title
CN101969725B (en) Intelligent general light-emitting diode (LED) street lamp illuminating power supply system
CN104577977A (en) Voltage and current switchable type electric leakage protection device
CN103491682A (en) Linear switching constant-current LED drive circuit for control over peak current
CN202721866U (en) New type driving circuit which is compatible with LED lamp tube
CN204291528U (en) Intelligent multifunction LED desk lamp
CN102677237B (en) Adaptive photoelectric electronic yarn cleaner
CN102842935A (en) Lithium battery emergency starting power supply with low temperature automatic pre-heating function
CN204104200U (en) A kind of Novel light-operated LED drive circuit
CN203413481U (en) Intelligent light-emitting diode (LED) street lamp
CN104270863A (en) Wireless intelligent single-firing-wire switch
CN103263216A (en) Glass heating kettle with far infrared heating film
CN101778510A (en) LED signal indicator light and multipath LED drive circuits thereof
CN102438267A (en) Device for detecting energy consumption and faults of Zigbee wireless sensor network node
CN104952217A (en) High-sensitivity gas detection and alarm system based on phase-sensitive detection circuit
CN103096585A (en) Light emitting diode (LED) intelligent lighting and energy saving control system based on web of things and method
CN203980113U (en) A kind of solar street light
CN102279365B (en) Electric tool control circuit and method of operating thereof
CN101453815A (en) Constant current outputting adaptive LED lamp controller
CN202713690U (en) Dimming interface circuit used for LED drive power
CN105142282A (en) MCU-based LED sectional type alternative conduction circuit and driving method thereof
CN106841809B (en) Multifunctional cable tester
CN107135572A (en) Sense lamp
CN203840609U (en) LED circuit having overheating protection function
CN203526752U (en) Digital temperature measuring type welding heat gun
CN106304490A (en) The control system of a kind of lithium electricity type solar LED street lamp and method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170524