CN101634835B - Load control module - Google Patents

Load control module Download PDF

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Publication number
CN101634835B
CN101634835B CN2008101340382A CN200810134038A CN101634835B CN 101634835 B CN101634835 B CN 101634835B CN 2008101340382 A CN2008101340382 A CN 2008101340382A CN 200810134038 A CN200810134038 A CN 200810134038A CN 101634835 B CN101634835 B CN 101634835B
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China
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coupled
signal
level
microprocessor
switch
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CN101634835A (en
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蔡文贵
王纯健
周文豪
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GE Investment Co Ltd
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GE Investment Co Ltd
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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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

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Abstract

The invention relates to a load control module, which is applicable to electrical equipment, wherein the electrical equipment is coupled to a switch. The load control module comprises a power storage unit, a microprocessor and a pulse control unit. The power storage unit can still continuously output a reserved voltage during a preset time period when the switch is turned off. In addition, the power storage unit can switch a level of an indicating signal according to the on and off state of the switch. With the change of the level of the switched indicating signal, the microprocessor adjusts the work period of a modulating signal in different control modes within and beyond a fine tuning period respectively. Therefore, the load control module of the invention can correspondingly adjust and control the level of the voltage according to the switching of the switch so as to execute more diversified control functions.

Description

Load control module
Technical field
The present invention relates to a kind of load control module, and be particularly related to a kind of adjustment that can cooperate switch point switching time and switch speed, produce the load control module of control voltage accordingly with varying level.
Background technology
Along with 18th century, the U.S. has found electricity in the Franklin, and human civilized world has strided forward major step immediately.In this CYBERSPACE, the application of electricity not only has influence on the production of social material, also is penetrated into each aspect of human lives widely.For example, all kinds of electric equipments such as the lighting device among the human lives, Climate Control Module, fan, food heater all must be by the driving ability operate as normal of power supply.
Electric equipment is in the process of using, and normally the mutual control by a switch and a load control module decides its whether operate as normal.For instance, with reference to the circuit block diagram of lighting device in practical application that Fig. 1 illustrated, wherein, lighting device 120 comprises light emitting diode 121 and diode (led) driver 122.Please continue with reference to Fig. 1, in integrated operation, when switch 130 conductings (turn on), conventional load control module 110 and light emitting diode 121 will receive the supply voltage V from switch 130 P1At this moment, lighting device 120 makes light emitting diode 121 according to supply voltage V normal running P1And drive.
On the other hand, conventional load control module 110 will be from the supply voltage V of switch 130 P1Convert control voltage V to fixed level C1By this, diode (led) driver 122 can be according to control voltage V C1, the light source that light emitting diode 121 is sent is adjusted to fixing brightness.Relatively, when switch 130 opened circuit (turn off), light emitting diode 121 was not having under the situation of powering with conventional load control module 110, and lighting device 120 can't provide light source normally, and remain under the pattern of shut-down operation.
According to above-mentioned, can learn that lighting device 120 is under the mutual control of switch 130 and conventional load control module 110, its operator scheme can only be selected one in normal running and shut-down operation.By this, the brightness of the light source that produced of lighting device 120 also can only bright with do not work in select a switching.In other words, under the controlling of switch 130 and conventional load control module 110, lighting device 120 can't produce the light source of multiple brightness.
In sum, general lighting device or electric equipment are under the control of switch and conventional load control module, and its circuit performance often enjoys restriction and can't satisfy the demand of consumer for convenience.Therefore, how load control module cooperates the change action of switch to reach diversified control function, has been each manufacturer problem that the utmost point need solve in the exploitation load control module.
The invention provides a kind of load control module,, produce control voltage accordingly with varying level along with the adjustment of switch point switching time and the difference of switch speed.By this, load control module of the present invention can cooperate the switching of switch, reach diversified control function.
The present invention proposes a kind of load control module, is applicable to an electric equipment, and this electric equipment is coupled to an end of switch, and the other end of switch is then in order to receive supply voltage.At this, described load control module comprises energy-storage units, microprocessor and pulse control unit.Wherein, energy-storage units is in order to conversion electric power voltage when the switch conduction, and according to this output deposit voltage with have the indicator signal of first level.In addition, energy-storage units not only continues output deposit voltage and the level of indicator signal is switched to second level more when switch opens circuit in a schedule time.
By this, microprocessor will be according to deposit voltage and starting, with within the fine setting time with outside, adjust work period of its modulation signal of being exported respectively with different control modes.Wherein, within the fine setting time, microprocessor can constantly increase the work period of modulation signal, is adjusted to the best effort cycle up to the work period of modulation signal, or the level of indicator signal switches to till second level.In addition, outside the fine setting time, and when the time that this switch is in off state is not more than the schedule time, this microprocessor will be selected a switching with the work period of modulation signal according to the indicator signal with second level in a plurality of default work periods; This microprocessor is outside this fine setting time and when time that this switch is in off state during greater than the schedule time, this microprocessor will be switched to disabled status, and restart this load control module.
On the other hand, pulse control unit will be adjusted the level of control voltage according to the work period of modulation signal, and output control voltage is regulated and control the characterisitic parameter of electric equipment.Thus, described load control module can cooperate the switching of switch, carry out diversified control function.
In one embodiment of this invention, load control module also comprises bus, over-temperature protection unit and feedback unit.Wherein, bus has first signal wire to the, three signal wires, and an end of first signal wire to the, three signal wires is coupled to microprocessor respectively.At this, the signal that microprocessor can be transmitted according to first signal wire resets fine setting time, best effort cycle and a plurality of default work period of its inside.
In addition, over-temperature protection unit starts according to deposit voltage, produces the temperature alarm signal with the temperature that detects electric equipment.On the other hand, microprocessor will determine whether to readjust the work period of modulation signal according to the temperature alarm signal.Moreover feedback unit produces corresponding feedback signal in order to the level according to control voltage, and microprocessor will be differentiated whether normal operation of pulse control unit according to feedback signal.
The present invention utilizes energy-storage units to cause the load control module can be at switch for during opening circuit, still ongoing operation in a schedule time.In addition, energy-storage units also can switch the level of indicator signal along with the conducting state of switch.By this, microprocessor will be according to the variation of the level that switches indicator signal, respectively within the fine setting time with outside, adjust work period of modulation signal with different control modes.Thus, load control module of the present invention will be along with the switching of switch, and generation accordingly has the control voltage of varying level, and then reaches diversified control function.
For above-mentioned feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. are described in detail below.
Description of drawings
Fig. 1 illustrates and is the circuit block diagram of lighting device in practical application.
Fig. 2 illustrates the circuit block diagram into the load control module of foundation one embodiment of the invention.
Fig. 3 A and Fig. 3 B illustrate respectively and are the waveform sequential chart in order to key diagram 2 embodiment.
Fig. 4 illustrates the detailed circuit diagram into the energy-storage units of foundation one embodiment of the invention.
Fig. 5 illustrates the detailed circuit diagram into the pulse control unit of foundation one embodiment of the invention.
Fig. 6 illustrates the detailed circuit diagram into the over-temperature protection unit of foundation one embodiment of the invention.
[main element symbol description]
110: the conventional load control module
120: lighting device
121: light emitting diode
122: diode (led) driver
130,230: switch
210: load control module
220: electric equipment
211: energy-storage units
212: microprocessor
213: pulse control unit
214: bus
214a～214c: signal wire
215: over-temperature protection unit
216: feedback unit
217: the gamma correction unit
410: voltage stabilizer
610: analog-to-digital converter
D 1～D 3: diode
R 1～R 3: resistance
VR 1: thermistor
C 1～C 3: electric capacity
Embodiment
Fig. 2 illustrates the circuit block diagram into the load control module of foundation one embodiment of the invention, and wherein, load control module 210 is applicable to electric equipment 220, and electric equipment 220 is coupled to an end of switch 230.With reference to Fig. 2, load control module 210 comprises energy-storage units 211, microprocessor 212 and pulse control unit 213.Wherein, energy-storage units 211 couples an end of switch 230.Microprocessor 212 couples energy-storage units 211.213 couplings of pulse control unit are between microprocessor 212 and electric equipment 220.
In integrated operation, when switch 230 conductings, energy-storage units 211 meetings will be from the supply voltage V of switch 230 P2, convert deposit voltage V to STWith indicator signal S with first level L1 IDOn the other hand, when switch 230 opened circuit, energy-storage units 211 can be in a schedule time T PThe interior output deposit voltage V that continues ST, and with indicator signal S IDLevel switch to the second level L2.
In addition, microprocessor 212 is according to deposit voltage V STAnd start, to finely tune time T in regular turn FAWithin with outside, produce modulation signal S with different control modes respectively PWMWherein, in the fine setting time T FAWithin, microprocessor 212 can constantly increase modulation signal S PWMWork period, up to modulation signal S PWMWork period be adjusted to the best effort cycle, or indicator signal S IDLevel be switched till the second level L2.Relatively, in the fine setting time T FAOutside, microprocessor 212 can be according to the indicator signal S with second level L2 ID, with modulation signal S PWMWork period in a plurality of default work periods, select a switching.By this, pulse control unit 213 will be according to modulation signal S PWMWork period, the control voltage V that output is corresponding CL2Regulate and control the characterisitic parameter of electric equipment 220.
In order to allow those skilled in the art can more understand the spirit of present embodiment, below the waveform sequential chart that will be illustrated with Fig. 3 A and Fig. 3 B respectively is an example, and the operation mechanism of load control module 210 is described further.
Please be simultaneously with reference to Fig. 2 and Fig. 3 A.At this, switch 230 can decide its conducting state according to switching signal S31.For example, when the level of switching signal S31 switched to the first level L1, switch 230 was with its two ends of conducting.Relatively, when the level of switching signal S31 switches to the second level L2, the two ends of switch 230 will maintain the state that opens circuit.At this, present embodiment supposes that the described first level L1 is a logical one, and the described second level L2 is a logical zero.For convenience of description, below each embodiment will describe with the above-mentioned prerequisite that is assumed to be.
Please continue with reference to Fig. 2 and Fig. 3 A, at the beginning, at time point t 0The time, because switch 230 is switched to conducting state,, energy-storage units 211 lays in voltage V so beginning output STWith indicator signal S with first level L1 IDAfterwards, switch 230 is in regular turn at time point t 1With t 2Switch.At this moment, maintain the time T that opens circuit by switch 230 S1Less than schedule time T PSo, at time point t 1With t 2Between, energy-storage units 211 is output deposit voltage V constantly ST, and with indicator signal S IDSwitch to the second level L2.Similarly, at time point t 4To t 5Between, energy-storage units 211 also can be exported deposit voltage V constantly ST, and with indicator signal S IDSwitch to the second level L2.
Because microprocessor 212 can be according to deposit voltage V STAnd start, so at time point t 0To t 7Between, microprocessor 212 will maintain under the state of startup, and constantly adjust the modulation signal S that it is exported PWMWork period.Wherein, in the fine setting time T FAWithin, microprocessor 212 can constantly increase modulation signal S PWMWork period, up at time point t 1To t 2Between, indicator signal S IDLevel switch to till the second level L2.Relatively, along with modulation signal S PWMWork period constantly increase, pulse control unit 213 will progressively promote control voltage V accordingly CL2Level, make control voltage V CL2Level maintain level LV31.
Moreover, in the fine setting time T FAOutside, just at time point t 3Afterwards, microprocessor 212 can be according to the indicator signal S with second level L2 ID, with modulation signal S PWMWork period in a plurality of default work periods, select a switching.By this, pulse control unit 213 will cause control voltage V CL2Level in a plurality of predetermined level, select a switching.
For example, if the modulation signal S that microprocessor 212 is produced PWMHave 3 kinds of different default work period PD1～PD3, and these default work period PD 1～PD3 are corresponding mutually with 3 kinds of different predetermined level LAT1～LAT3.At time point t 3To t 6Between, receive indicator signal S with second level L2 when microprocessor 212 IDThe time, modulation signal S PWMWork period will be switched to default work period PD1.Relatively, pulse control unit 213 will produce the control voltage V with predetermined level LAT1 accordingly CL2
Afterwards, switch 230 is at time point t 6With t 8The switching of being carried out will cause microprocessor 212 at time point t 7Be switched to disabled status.In addition, at time point t 8The time, microprocessor 212 will be activated again, to repeat at time point t 0To t 8Between operation mechanism.It should be noted that as deposit voltage V STElectrical level rising to a predetermined level (for example be 0.5*V ST) time, microprocessor 212 can be carried out the action of resetting.In other words, microprocessor 212 also can be carried out the action of replacement when restarting.
On the other hand, if the waveform sequential chart that is illustrated with Fig. 3 B is an example.Similarly, switch 230 can decide its conducting state according to switching signal S31.In addition, along with the switching of the conducting state of switch 230, switch 230 maintains the time T that opens circuit S1With T S2, will be respectively less than schedule time T PTherefore, at time point t 0To t 7Between, energy-storage units 211 will constantly be exported deposit voltage V ST, and be switched during open circuit at switch 230 in regular turn, with indicator signal S IDLevel switch to the second level L2.
Yet the maximum difference of Fig. 3 B and Fig. 3 A is, if with the fine setting time T of 212 standards of microprocessor FABe benchmark, the switching signal S31 among Fig. 3 B and Fig. 3 A, the time point that its level switches is also inequality.Therefore, at the waveform sequential chart that Fig. 3 B is illustrated, finely tuning time T FAWithin, microprocessor 212 can constantly increase modulation signal S PWMWork period, up to modulation signal S PWMWork period at time point t 1Be adjusted to till the best effort cycle.Relatively, along with modulation signal S PWMWork period constantly increase, pulse control unit 213 will progressively promote control voltage V accordingly CL2Level, make control voltage V CL2Level maintain level LV32.It should be noted that with Fig. 3 A in comparison, level LV32 is greater than level LV31.
On the other hand, in the fine setting time T FAOutside, just at time point t 2Afterwards, microprocessor 212 can be according to the indicator signal S with second level L2 ID, with modulation signal S PWMWork period in a plurality of default work periods, select a switching.Therefore, at time point t 3To t 4Between, receive indicator signal S with second level L2 when microprocessor 212 IDThe time, modulation signal S PWMWork period will be switched to default work period PD1.By this, pulse control unit 213 will produce the control voltage V with predetermined level LAT1 accordingly CL2
Similarly, at time point t 5To t 6Between, receive indicator signal S with second level L2 when microprocessor 212 IDThe time, modulation signal S PWMWork period will be switched to default work period PD2.By this, pulse control unit 213 will produce the control voltage V with predetermined level LAT2 accordingly CL2Afterwards, because switch 230 maintains the time T that opens circuit S3Greater than schedule time T PSo microprocessor 212 will be at time point t 8Be switched to disabled status, and at time point t 9The time, be activated again, to repeat at time point t 0To t 9Between operation mechanism.
In sum, work as switching signal S31 at the beginning at time point t 0When being switched to the first level L1, load control module 210 is just in the fine setting time T FAWithin constantly adjust control voltage V CL2Level, up to the conducting state of the quick change-over switch 230 of switching signal S31, or modulation signal S PWMThe work period adjusted to the best effort cycle.Afterwards, in the fine setting time T FAOutside, load control module 210 more can be according to the indicator signal S with second level L2 IDAdjust control voltage V CL2On the other hand, be in the time T that opens circuit when switch 230 S3Greater than schedule time T PThe time, load control module 210 will be activated again, to repeat above-mentioned operation mechanism.Thus, load control module 210 can cooperate the change action of switch 230, cause electric equipment 220 to carry out diversified function control.
For example, when electric equipment 220 is a lighting device, because in the fine setting time T FAWithin received control voltage V CL2, its level constantly changes, so lighting device can be according to control voltage V CL2Level, constantly the brightness of the light source that it provided is improved, be switched fast up to the conducting state of switch 230, or the brightness of light source is according to modulation signal S PWMThe best effort cycle be adjusted to optimal brightness.Afterwards, in the fine setting time T FAOutside, lighting device can be along with the quick switching of switch 230, and the brightness of its light source is switched in a plurality of predetermined luminance.Otherwise, surpass schedule time T when switch 230 switches to the time of opening circuit PWhen (for example 2 seconds), then load control module 210 will be activated again, to cooperate the change action of switch 230 once more, regulate and control the brightness of the light source that lighting device provides.
In view of the above, the contrast known technology, conventional load control module 110 can only cooperate the change action of switch 130, make lighting device bright with do not work in select a switching.And the load control module 210 of present embodiment can cooperate the change action of switch 230, adjusts the brightness of the light source that lighting device provided under driving condition.In other words, an electric equipment that is controlled by switch under the control of load control module 210 of collocation present embodiment, can be carried out diversified function and control.
Similarly, when electric equipment 220 is a food heater, in the fine setting time T FAWithin, food heater will be according to control voltage V CL2Level, constantly the temperature of the thermal source that it provided is improved, be switched fast up to the conducting state of switch 230, or the temperature of thermal source has been promoted to optimum temperature.Afterwards, in the fine setting time T FAOutside, food heater will be according to control voltage V CL2, the temperature of its thermal source that provides is switched in a plurality of predetermined temperatures.
In addition, when electric equipment 220 is an air conditioner facility, in the fine setting time T FAWithin, air conditioner facility will be according to control voltage V CL2Level, come the corresponding indoor temperature that reduces, be switched fast up to the conducting state of switch 230, or indoor temperature adjusted is to optimum temperature.Afterwards, in the fine setting time T FAOutside, air conditioner facility just can be according to control voltage V CL2, make indoor temperature in a plurality of predetermined temperatures, switch.
Please continue with reference to Fig. 2, load control module 210 also comprises bus 214, over-temperature protection unit 215 and feedback unit 216.Wherein, bus 214 has signal wire 214a～214c, and the end of signal wire 214a～214c is coupled to microprocessor 212 respectively.Over-temperature protection unit 215 is coupled to the other end of energy-storage units 211 and signal wire 214.Feedback unit 216 is coupled between microprocessor 212 and the pulse control unit 213.
In integrated operation, the user can come loader to microprocessor 212 by signal wire 214a.By this, but microprocessor 212 resets fine setting time, best effort cycle and these default work periods of original institute standard with the signal that basis signal line 214a is transmitted.In addition, over-temperature protection unit 215 is according to deposit voltage V STAnd start.Under the state that starts, over-temperature protection unit 215 can detect the temperature of electric equipment 220, produces temperature alarm signal S with the foundation testing result TARelatively, microprocessor 212 will be according to temperature alarm signal S TADetermine whether readjusting modulation signal S PWMWork period.Thus, when the operating temperature of electric equipment 220 was too high, load control module 210 will be according to temperature alarm signal S TAIn time adjust control voltage V CL2Level, to reduce the power consumption of electric equipment 220.
On the other hand, feedback unit 216 can constantly detect whole control voltage V CL2Level, with according to control voltage V CL2Level produce corresponding feedback signal S FBSimilarly, microprocessor 212 will be according to feedback signal S FBDifferentiate whether normal operation of pulse control unit 213, with the operation mechanism of instant control pulse control unit 213.
Further, if the described electric equipment 220 of Fig. 2 embodiment is in order to a light source to be provided, and the brightness of this light source is along with control voltage V CL2Level variation and when changing, load control module 210 also comprises gamma correction unit 217.Wherein, gamma correction unit 217 is coupled to the other end of energy-storage units 211 and signal wire 214c.In addition, gamma correction unit 217 is according to deposit voltage V STAnd start.Under the state that starts, gamma correction unit 217 can utilize its inner sensing element to detect mobile object and brightness in the electric equipment 220 place environment, produces brightness fine adjustment signal S with the foundation testing result BTWherein, the sensing element of 217 inside, gamma correction unit comprises OPTICAL SENSORS and infrared sensor, and described OPTICAL SENSORS for example is photoresistance, optotransistor ... etc.
Afterwards, microprocessor 212 will be according to brightness fine adjustment signal S BTAutomatically revise modulation signal S PWMWork period.By this, the light source that electric equipment 220 is provided, the adjustment of its brightness changes up and down according to a particular percentile.Thus, when the brightness of electric equipment 220 place environment is too high, and gamma correction unit 217 detects again under the situation less than mobile object, and load control module 210 can be according to brightness fine adjustment signal S BTAutomatic Correction and Control voltage V CL2Level, make the brightness of the light source that electric equipment 220 is provided descend a little.Relatively, when the brightness of electric equipment 220 place environment is crossed when low, and gamma correction unit 217 detects again under the situation of mobile object, and load control module 210 can be according to brightness fine adjustment signal S BT, increase the brightness of the light source that electric equipment 220 provided a little.
In order to allow those skilled in the art can more understand the spirit of present embodiment, below will do further explanation at the inside structure of energy-storage units 211, pulse control unit 213, over-temperature protection unit 215.
Fig. 4 illustrates the detailed circuit diagram into the energy-storage units of foundation one embodiment of the invention.Wherein, for convenience of description for the purpose of, Fig. 4 more shows switch 230.Please refer to Fig. 4, energy-storage units 211 comprises diode D 1, resistance R 1～R 2, capacitor C 1～C 2And voltage stabilizer 410.At this, diode D 1Anode couple switch 230.Resistance R 1First end couple diode D 1Negative electrode, and its second end is in order to produce indicator signal S IDResistance R 2First end be coupled to resistance R 1Second end, and its second end is coupled to ground.Capacitor C 1First end be coupled to resistance R 1Second end, and its second end is coupled to ground.Voltage stabilizer 410 is coupled to resistance R 1Second end.Capacitor C 2First end be coupled to voltage stabilizer 410, and its second end is coupled to ground.
In integrated operation, when switch 230 conductings, from the supply voltage V of switch 230 P2Can be by diode D 1Pressure drop is in resistance R 1With R 2On.By this, resistance R 1With R 2Formed dividing potential drop will be stored in capacitor C 1In, have the indicator signal S of the first level L1 with formation IDIn addition, voltage stabilizer 410 also can be with resistance R 1With R 2Formed dividing potential drop converts deposit voltage V to STOn the other hand, when switch 230 opens circuit, capacitor C 1The component voltage of originally being stored can be discharged to resistance R 2, so that indicator signal S IDLevel switch to the second level L2.Moreover, because capacitor C 2Capacitance much larger than capacitor C 1Capacitance, so when switch 230 opened circuit, voltage stabilizer 410 still can continue output deposit voltage V STReach a schedule time T P
Fig. 5 illustrates the detailed circuit diagram into the pulse control unit of foundation one embodiment of the invention.Please refer to Fig. 5, pulse control unit 213 comprises diode D 2～D 3, inductance L 1And capacitor C 3Wherein, diode D 2Anode be coupled to microprocessor 212.Diode D 3Negative electrode be coupled to diode D 2Negative electrode, and its anode is coupled to ground.Inductance L 1First end be coupled to diode D 2Negative electrode, and its second end is in order to produce control voltage V CL2Capacitor C 3First end be coupled to inductance L 1Second end, and its second end is coupled to ground.
Please continue with reference to Fig. 5 modulation signal S PWMVia diode D 2With D 3Rectification, will convert a pulsating direct current signal to.Afterwards, inductance L 1With capacitor C 3Formed low-pass filter will extract the flip-flop of pulsating direct current signal, and then produces control voltage V CL2Because the waveform of pulsating direct current signal depends on modulation signal S PWMThe size of work period, therefore along with modulation signal S PWMThe variation of work period, control voltage V CL2Level also will change thereupon.In other words, pulse control unit 213 can be according to modulation signal S PWMThe size of work period, adjust control voltage V CL2Level.
Fig. 6 illustrates the detailed circuit diagram into the over-temperature protection unit of foundation one embodiment of the invention.Please refer to Fig. 6, over-temperature protection unit 215 comprises thermistor VR 1, resistance R 3And analog-to-digital converter 610.Wherein, thermistor VR 1First end be coupled to deposit voltage V STResistance R 3First end be coupled to thermistor VR 1Second end, and its second end is coupled to ground.In addition, analog-to-digital converter 610 is coupled in thermistor VR 1Second end and signal wire 214b between.
Please continue with reference to Fig. 6 deposit voltage V STThrough thermistor VR 1With resistance R 3Dividing potential drop after, will form a sensing voltage V SNAfterwards, analog-to-digital converter 610 can be with sensing voltage V SNConvert digital signal to, to produce temperature alarm signal S TAIt should be noted that because thermistor VR 1Resistance value can be along with the rising of the temperature of electric equipment 220 and descend, so when the temperature of electric equipment 220 is too high, sensing voltage V SNAlso will change.Thus, analog-to-digital converter 610 can be according to sensing voltage V SNLevel, produce corresponding temperature alarm signal S TA
In sum, the present invention utilizes energy-storage units to cause the load control module can be at switch for during opening circuit, still ongoing operation in a schedule time.In addition, energy-storage units also can switch the level of indicator signal along with the conducting state of switch.By this, microprocessor will be according to the variation of the level that switches indicator signal, respectively within the fine setting time with outside, adjust work period of modulation signal with different control modes.Thus, along with the adjustment of switch point switching time and the difference of switch speed, load control module of the present invention will produce the control voltage with varying level accordingly, and then reach diversified control function.
Though the present invention with preferred embodiment openly as above; right its is not in order to qualification the present invention, those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little adjustment and retouching, so protection scope of the present invention is as the criterion when looking the appended claims person of defining.

Claims (10)

1. a load control module is applicable to an electric equipment, and wherein, this electric equipment is coupled to an end of a switch, and the other end of this switch is in order to receive a supply voltage, and this load control module comprises:
One energy-storage units, couple an end of this switch, in order to change this supply voltage when this switch conduction, to export a deposit voltage and to have an indicator signal of one first level, this energy-storage units not only continues this deposit voltage of output and the level of this indicator signal is switched to one second level more when this switch opens circuit in a schedule time;
One microprocessor, couple this energy-storage units, start according to this deposit voltage, with within the fine setting time, constantly increase the work period of a modulation signal, be adjusted to a best effort cycle up to the work period of this modulation signal, or the level of this indicator signal switches to till this second level, this microprocessor is more outside this fine setting time, and when the time that this switch is in off state is not more than the schedule time, this microprocessor is selected a switching with the work period of this modulation signal according to having this indicator signal of this second level in a plurality of default work periods; This microprocessor is outside this fine setting time and when time that this switch is in off state during greater than the schedule time, this microprocessor will be switched to disabled status, and restart this load control module; And
One pulse control unit is coupled to this microprocessor and this electric equipment, adjusts the level of a control voltage according to work period of this modulation signal, regulates and control the characterisitic parameter of this electric equipment to export this control voltage.
2. load control module as claimed in claim 1, wherein this energy-storage units comprises:
One first diode, its anode is coupled to this switch;
One first resistance, its first end is coupled to the negative electrode of this first diode, and second end of this first resistance is in order to produce this indicator signal;
One second resistance, its first end is coupled to second end of this first resistance, and second end of this second resistance is coupled to ground;
One first electric capacity, its first end is coupled to second end of this first resistance, and second end of this first electric capacity is coupled to ground;
One voltage stabilizer is coupled to second end of this first resistance, in order to produce this deposit voltage; And
One second electric capacity, its first end is coupled to this voltage stabilizer, and second end of this second electric capacity is coupled to ground.
3. load control module as claimed in claim 1, wherein this pulse control unit comprises:
One second diode, its anode is coupled to this microprocessor;
One the 3rd diode, its negative electrode is coupled to the negative electrode of this second diode, and the anode of the 3rd diode is coupled to ground;
One inductance, its first end is coupled to the negative electrode of this second diode, and second end of this inductance is in order to produce this control voltage; And
One the 3rd electric capacity, its first end is coupled to second end of this inductance, and second end of the 3rd electric capacity is coupled to ground.
4. load control module as claimed in claim 1 also comprises:
One bus, have one first signal wire, a secondary signal line and one the 3rd signal wire, this first signal wire a to end of the 3rd signal wire is coupled to this microprocessor respectively, wherein, this microprocessor resets this fine setting time, this best effort cycle and these default work periods according to the signal that this first signal wire is transmitted.
5. load control module as claimed in claim 4 also comprises:
One over-temperature protection unit is coupled to the other end of this energy-storage units and this secondary signal line, starts according to this deposit voltage, produces a temperature alarm signal with the temperature that detects this electric equipment,
Wherein, this microprocessor determines whether to readjust the work period of this modulation signal according to this temperature alarm signal.
6. load control module as claimed in claim 5, wherein this over-temperature protection unit comprises:
One thermistor, its first end is coupled to this deposit voltage;
One the 3rd resistance, its first end is coupled to second end of this thermistor, and second end of the 3rd resistance is coupled to ground; And
One analog-to-digital converter is coupled between second end and this secondary signal line of this thermistor, in order to produce this temperature alarm signal.
7. load control module as claimed in claim 4, wherein this electric equipment is in order to providing a light source, and the brightness of this light source changes along with the variation of the level of this control voltage, and this load control module also comprises:
One gamma correction unit is coupled to the other end of this energy-storage units and the 3rd signal wire, detects mobile object and brightness in this electric equipment place environment with a sensing element that utilizes its inside, and produces a brightness fine adjustment signal according to testing result,
Wherein, this microprocessor is revised work period of this modulation signal automatically according to this brightness fine adjustment signal, makes the adjustment of brightness of this light source change up and down according to a particular percentile.
8. load control module as claimed in claim 7, wherein this sensing element comprises an OPTICAL SENSORS and an infrared sensor.
9. load control module as claimed in claim 1, also comprise a feedback unit, be coupled between this microprocessor and this pulse control unit, produce a corresponding feedback signal in order to level according to this control voltage, wherein, this microprocessor is differentiated the whether normal operation of this pulse control unit according to this feedback signal.
10. load control module as claimed in claim 1, wherein when this laid in electrical level rising to a predetermined level of voltage, this microprocessor can be carried out the action of replacement.
CN2008101340382A 2008-07-22 2008-07-22 Load control module Expired - Fee Related CN101634835B (en)

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CN112672462B (en) * 2020-12-11 2024-04-02 光华临港工程应用技术研发(上海)有限公司 Lighting adjusting device and lighting system

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