JP2007174751A - Power supply device and discharge lamp lighting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply device that can easily and quickly adjust control operation, and can quickly determine whether the adjustment has been properly performed or not, and a discharge lamp lighting device. <P>SOLUTION: A control means 9 comprises an operation processing part 26a that implements an adjustment program by using an adjustment signal inputted via an external signal input part 6 at adjustment operation, and applies operation processing to control coefficients K1, K2 by controlling a high-frequency lighting circuit 3 so that an electric characteristic detected by an electric characteristic detection means 5 reaches a prescribed value. The control means makes an annunciation signal output part 7 output an annunciation signal that has been completed in adjustment or is unadjustable according to the operation processing of the control coefficients K1, K2 performed by the operation processing part 26a, and makes an nonvolatile storage means 8 store the control coefficients K1, K2 when the operation processing part 26a determines the control coefficients K1, K2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a power supply device and a discharge lamp lighting device that perform control adjustment.

  The power supply device is adjusted at the time of product shipment, for example, so that a predetermined circuit unit or load operates with desired electrical characteristics. This adjustment is conventionally performed by a person (adjuster) adjusting, for example, the resistance value of the variable resistor. For example, in the adjustment process, each of the RGB LEDs constituting the light source is caused to emit light in order, and the resistance value of each resistor corresponding to each LED is adjusted so that the luminance detected by the light receiving sensor becomes a specified value. A lighting device has been proposed that causes all LEDs to emit light and adjusts the resistance value of each resistor so that the color temperature detected by the color temperature sensor becomes a specified color temperature (see Patent Document 1). ).

  In addition, an inverter that adjusts a set value of an operation parameter by changing a variable resistor for parameter adjustment has been proposed (see Patent Document 2). In this prior art inverter, the setting content and setting value are displayed on the display in real time according to the variable resistance of the variable resistor. When the setting value reaches the target value, the adjustment is completed, and the setting value is stored in the ROM. Is.

Moreover, the adjustment method which performs the inductance adjustment of the whole induction line of a non-contact electric power feeding apparatus, without using a measuring device is proposed (refer patent document 3). In this prior art adjustment method, when the indicator lamp that instructs to adjust the variable inductor in the direction of increasing the inductance is lit until the indicator lamp that indicates that the adjustment is good is lit, the variable inductor is placed on the inductance increasing side. When the indicator lamp for instructing to adjust the variable inductor in the direction in which the inductance decreases is turned on, the variable inductor is adjusted to the inductance decreasing side.
Japanese Patent Laying-Open No. 2005-11628 (page 6-7, FIG. 1) Japanese Utility Model Publication No. 5-33686 (5th page, Fig. 1) Japanese Patent Laying-Open No. 2005-168220 (page 9, FIG. 5)

  The lighting device disclosed in Patent Document 1 has a drawback that a person adjusts the resistance value of the resistor so that the luminance and color temperature of the light source become the specified values, and thus the adjustment requires time and effort. May cause human adjustment errors such as misconfiguration of measuring instruments and misreading of measured values.

  In addition, the inverter of Patent Document 2 adjusts so that the set value becomes a target value by changing the resistance value of the variable resistor while visually observing the set value displayed on the display unit. And has the disadvantages of requiring a lot of time and human adjustment errors.

  In addition, since the inductance adjustment method of Patent Document 3 changes the inductance of the variable inductor while observing the lighting of each display lamp, it is possible to reduce the time and effort of adjustment and reduce the occurrence of human adjustment errors. However, since the adjustment member changes the variable inductor, it still takes time and effort for adjustment. In addition, since the variable inductor is adjusted until the indicator lamp that indicates that the adjustment is good is lit, it may take a long time to determine that the adjustment cannot be made when the internal circuit is defective and cannot be adjusted. .

  An object of the present invention is to provide a power supply device and a discharge lamp lighting device that can easily and quickly adjust the control operation and can quickly determine whether the adjustment is good or bad.

  The power supply device according to the first aspect of the present invention includes: an electric characteristic detection unit that detects at least one electric characteristic of a DC power supply, a power supply circuit, and a load; an external signal input unit that inputs an adjustment signal from the outside; A notification signal output unit for outputting a non-adjustable notification signal to the outside; a non-volatile storage means for storing a control coefficient; and input via an external signal input unit during an adjustment operation in which an adjustment load is connected to the power supply circuit An arithmetic processing unit that executes an adjustment program based on the adjusted signal and controls the power supply circuit so that the electric characteristic detected by the electric characteristic detecting means becomes a predetermined value and arithmetically processes the control coefficient. Depending on the control coefficient calculation processing by the control signal, the notification signal output unit outputs an adjustment completion or non-adjustable notification signal, and the control coefficient is not used when the calculation processing unit determines the control coefficient. Characterized in that it comprises a; and configured the control means so as to be stored in sexual storage means.

  In the present invention and each of the following inventions, each configuration is as follows unless otherwise specified.

  The DC power supply may be any battery that outputs a DC voltage, such as a battery, a commercial AC voltage rectified or rectified and smoothed, or a chopper circuit connected thereto.

  The load may be either an adjustment load or an original load.

  The adjustment load may be a resistor equivalent to the rated impedance of the original load, for example.

  The original load may be anything that consumes power in various electric devices such as a heat transfer wire such as a motor and a heater, an air conditioner, a ventilation fan, and a blower.

  The electrical characteristics include, for example, the input (output) voltage, input (output) current and input (output) power and load current, load voltage and load power of each DC power supply and power supply circuit, as well as each of the DC power supply and power supply circuit. Current, voltage and power of the components.

  “Control coefficient” refers to a coefficient of an arithmetic expression when the arithmetic processing unit performs arithmetic processing. By determining this coefficient, it is possible to control the power supply circuit so that the electric characteristic detected by the electric characteristic detecting means becomes a predetermined value.

  The adjustment program controls the adjustment load connected to the power supply circuit. The original load is controlled based on the normal program.

  According to the present invention, when the adjustment load is connected to the power supply circuit and the adjustment signal is input to the external signal input unit, the arithmetic processing unit executes the adjustment program and obtains the electric characteristics detected by the electric characteristic detection unit. A control coefficient of a control equation for controlling the power supply circuit to be a predetermined value is calculated. Then, when the arithmetic processing unit determines the control coefficient, the control unit stores the control coefficient in the nonvolatile storage unit, and causes the notification signal output unit to output an adjustment completion notification signal. In addition, when the arithmetic processing unit cannot determine the control coefficient, the control unit causes the notification signal output unit to output an unadjustable notification signal. Whether or not adjustment with respect to the control operation of the adjustment load is acceptable is determined based on the notification signal indicating that adjustment has been completed or cannot be controlled.

  The invention of the discharge lamp lighting device according to claim 2 includes: an electric characteristic detecting means for detecting at least one electric characteristic of a direct current power source, a high frequency lighting circuit and a discharge lamp; an external signal input unit for inputting an adjustment signal from the outside; A notification signal output unit for outputting an adjustment completion or non-adjustable notification signal to the outside; a non-volatile storage means for storing a control coefficient; and an external signal input during an adjustment operation in which an adjustment load is connected to the high-frequency lighting circuit An arithmetic processing unit that executes an adjustment program in accordance with an adjustment signal input via the control unit and controls the high-frequency lighting circuit so that the electric characteristic detected by the electric characteristic detecting means becomes a predetermined value, and calculates a control coefficient. In accordance with the calculation processing of the control coefficient by the calculation processing unit, the notification signal output unit outputs an adjustment completion or non-adjustable notification signal, and the calculation processing unit Characterized in that it comprises a; the control coefficient and configured the control means so as to be stored in non-volatile storage means when determined.

  According to the present invention, when the adjustment load is connected to the high-frequency lighting circuit and the adjustment signal is input to the external signal input unit, the arithmetic processing unit executes the adjustment program, and the electric characteristic detected by the electric characteristic detection unit A control coefficient of a control equation for controlling the high frequency lighting circuit with a predetermined value is calculated. Then, when the arithmetic processing unit determines the control coefficient, the control unit stores the control coefficient in the nonvolatile storage unit, and causes the notification signal output unit to output an adjustment completion notification signal. In addition, when the arithmetic processing unit cannot determine the control coefficient, the control unit causes the notification signal output unit to output an unadjustable notification signal. Whether or not adjustment with respect to the control operation of the adjustment load is acceptable is determined based on the notification signal indicating that adjustment has been completed or cannot be controlled.

  The discharge lamp lighting device according to claim 3 is the discharge lamp lighting device according to claim 2, wherein the external signal input unit inputs the adjustment signal by a radio signal, and the notification signal output unit reports by the radio signal. It is characterized by being configured to output a signal.

  According to the present invention, the external signal input unit is configured to input the adjustment signal as a radio signal, and the notification signal output unit is configured to output the notification signal as a radio signal. Is not required to be connected to the external signal input unit and the notification signal output unit. Therefore, the adjustment work is facilitated and speeded up.

  The discharge lamp lighting device according to claim 4 is the discharge lamp lighting device according to claim 2 or 3, wherein the control means determines a control coefficient among the electrical characteristics detected by the electrical characteristic detection means. A notification signal that cannot be adjusted with respect to electrical characteristics that cannot be output is output from a notification signal output unit.

  According to the present invention, an unadjustable notification signal is output from the notification signal output unit for an electrical characteristic for which a control coefficient cannot be determined, and thus an unadjustable electrical characteristic is specified.

  The discharge lamp lighting device according to claim 5 is the discharge lamp lighting device according to any one of claims 2 to 4, wherein the arithmetic processing unit performs arithmetic processing on the electrical characteristic detected by the electrical characteristic detecting means. The order is set, and the control means outputs the order from the notification signal output unit as an unadjustable notification signal for an electrical characteristic for which a control coefficient cannot be determined.

  According to the present invention, since the order of calculation processing for the electrical characteristics for which the control coefficient cannot be determined is output from the notification signal output unit as an unadjustable notification signal, the unadjustable electrical characteristics are identified by the order. Is done.

  A discharge lamp lighting device according to a sixth aspect of the present invention is the discharge lamp lighting device according to any one of the second to fifth aspects, wherein the control means is within a range between an upper limit value and a lower limit value set in advance by the arithmetic processing unit. When the control coefficient is determined, the adjustment end notification signal is output, and when the control coefficient cannot be determined within the range, the adjustment impossible notification signal is output.

  According to the present invention, the control coefficient is processed within the range of the upper limit value and the lower limit value set in advance, so that a desired control coefficient that can control lighting of the discharge lamp with predetermined electrical characteristics is quickly determined. .

  According to the first aspect of the present invention, an adjustment completion or non-adjustment notification signal is output according to whether or not the control coefficient can be determined by the arithmetic processing unit. Judgment can be made. Then, the adjustment load is connected to the power supply circuit, the adjustment signal is input to the external signal input unit, and the DC power supply is turned on, so that the adjustment of the control operation for the adjustment load is automatically performed. It is possible to prevent human error in the adjustment without requiring time and effort.

  According to the second aspect of the present invention, the adjustment end or non-adjustment notification signal is output according to whether or not the control coefficient can be determined by the arithmetic processing unit. Judgment can be made. Then, the adjustment load is connected to the high-frequency lighting circuit, the adjustment signal is input to the external signal input unit, and the DC power supply is turned on, so that the adjustment of the control operation for the adjustment load is automatically performed. Therefore, it is possible to prevent human error in the adjustment without requiring labor and time.

  According to the invention of claim 3, the external signal input unit is configured to input the adjustment signal by a radio signal, and the notification signal output unit is configured to output the notification signal by a radio signal. In addition, the adjustment work can be performed more easily and quickly without the need to connect the notification signal output unit and at least one external device that outputs the adjustment signal and inputs the notification signal.

  According to the invention of claim 4, since the notification signal that cannot be adjusted is output from the notification signal output unit with respect to the electrical characteristics for which the control coefficient cannot be determined, the information on the electrical characteristics that cannot be adjusted is manufactured and designed. Feedback can be given to the process.

  According to the fifth aspect of the present invention, since the order in which the arithmetic processing unit performs arithmetic processing is set for the electric characteristics detected by the electric characteristic detecting means, adjustment is performed in order from the detection values of the electric characteristics that are functionally important. It is possible to improve the accuracy of the adjustment. Since the order of the electrical characteristics that cannot be adjusted is output as a notification signal from the notification signal output unit, it is possible to feed back to the manufacturing process or the design process by specifying the electrical characteristics that cannot be adjusted based on the order.

  According to the sixth aspect of the present invention, the arithmetic processing unit calculates the control coefficient for the electrical characteristics within the range of the upper limit value and the lower limit value set in advance, so that a desired control coefficient is determined. Can be stably lit at a predetermined value.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. First, a first embodiment of the present invention will be described.

  1 to 4 show a first embodiment of the present invention, FIG. 1 is a schematic circuit diagram of a discharge lamp lighting device, FIG. 2 is a flow chart showing selection of adjustment operation and normal operation of a control means, and FIG. FIG. 4 is a flow chart during the adjustment operation of the control means, and FIG. 4 is a flow chart during the normal operation of the control means.

  In FIG. 1, a discharge lamp lighting device 1 includes a DC power source 2, a high-frequency lighting circuit 3, a fluorescent lamp 4 as a discharge lamp, an electrical characteristic detection means 5, an external signal input unit 6, a notification signal output unit 7, a non-volatile memory. It has a non-volatile memory 8 and a control means 9 as means.

  The DC power supply 2 includes a rectifier 10 that rectifies the AC voltage of the commercial AC power supply Vs and converts it to a DC voltage.

  The high frequency lighting circuit 3 is formed by a boost chopper circuit 11, an inverter circuit 12 and a resonance circuit 13. The step-up chopper circuit 11 includes a series circuit of an inductor L1 and a field effect transistor FET1 connected between the outputs of the rectifier 10, and a backflow prevention diode D1 and a smoothing capacitor C1 connected between both ends of the field effect transistor FET1. It consists of a series circuit. The step-up chopper circuit 11 converts the DC voltage from the DC power source 2 into a predetermined voltage by the on / off operation of the field effect transistor FET1, and outputs the voltage between both ends of the smoothing capacitor C1.

  The inverter circuit 12 includes field effect transistors FET2 and FET3 connected in series between both ends of the smoothing capacitor C1, and the field effect transistors FET2 and FET3 are alternately turned on and off to change the DC voltage into a high frequency AC voltage. The signal is converted and output between the drain and source of the field effect transistor FET3.

  The resonance circuit 13 includes a DC cut capacitor C2, an inductor L2, and a starting capacitor C3 connected between the drain and source of the field effect transistor FET3 via the fluorescent lamp 4, and resonates according to the high frequency AC voltage. The fluorescent lamp 4 is turned on. As described above, the high-frequency lighting circuit 3 converts the DC voltage from the DC power source 2 into a high-frequency voltage and outputs it, and the fluorescent lamp 4 is lit by the high-frequency lighting circuit 3.

  The electrical characteristic detection means 5 includes an input voltage detection circuit 14 that detects the input voltage of the boost chopper circuit 11, an output voltage detection circuit 15 that detects the output voltage, a lamp voltage detection circuit 16 that detects the lamp voltage of the fluorescent lamp 4, and The lamp current detection circuit 17 detects the lamp current.

  The external signal input unit 6 includes an external signal input interface (I / F) circuit 18 and signal input terminals 19a and 19b. Then, for example, an adjustment signal of a pulse signal is input from the outside to the external signal input I / F circuit 18 via the signal input terminals 19a and 19b. The adjustment signal is input to the external signal input unit 6 when an adjustment load is connected to the high-frequency lighting circuit 3. The adjustment load is a resistor having an impedance equivalent to that of the fluorescent lamp 4, for example.

  The notification signal output unit 7 is configured to output an adjustment completion or non-adjustment notification signal to the signal output terminals 20a to 20e. The notification signal is, for example, DC 5V. That is, when the input voltage of the boost chopper circuit 11 cannot be adjusted (cannot be adjusted), DC5V is output to the signal output terminal 20a, and when the output voltage is also not adjustable, the signal output terminal 20b is output. DC5V is output. When the lamp voltage of the fluorescent lamp 4 cannot be adjusted, DC5V is output to the signal output terminal 20c, and when the lamp current cannot be adjusted, DC5V is output to the signal output terminal 20d. When all the electrical characteristics can be adjusted (adjustment is completed), DC5V is output to the signal output terminal 20e.

  And the display apparatus 21 installed in the exterior is connected to the signal output terminals 20a-20e. That is, the signal output terminal 20a is connected to the light emitting diode PD1 through the current limiting resistor R1, and the signal output terminals 20b to 20d are connected to the light emitting diodes PD2 to PD4 through the resistors R2 to R4, respectively. The terminal 20e is connected to the light emitting diode PD5 through the resistor R5.

  When a notification signal (DC5V) is output from the notification signal output unit 7 to the signal output terminals 20a to 20e, the light emitting diodes PD1 to PD5 are turned on. That is, when the light emitting diode PD1 is turned on, it is displayed that the input voltage of the boost chopper circuit 11 cannot be adjusted, and when the light emitting diode PD2 is turned on, it is also displayed that the output voltage cannot be adjusted. . Further, when the light emitting diode PD3 is turned on, it is displayed that the lamp voltage of the fluorescent lamp 4 cannot be adjusted, and when the light emitting diode PD4 is turned on, it is also displayed that the lamp current cannot be adjusted. When the light emitting diode PD5 is turned on, it is displayed that the adjustment has been completed for all the electrical characteristics.

  The nonvolatile memory 8 is configured to store predetermined values (target values) of each electrical characteristic, upper and lower limits of control coefficients, control coefficients of the determined arithmetic expression, and the like.

  The control means 8 has a main control including an arithmetic processing unit 26a having an analog-digital (AD) converter 22, a drive circuit 23, a nonvolatile memory 8, a program memory 24, a main memory 25, and a central processing unit (CPU). A portion 26 is formed, and these are connected by a bus 27.

  The AD converter 22 converts the detection value (electric characteristic) detected by the electric characteristic detection means 5 into a digital value and sends it to the main control unit 26. The drive circuit 23 generates drive voltages for turning on and off the field effect transistor FET1 and the field effect transistors FET2 and FET3 in response to a control signal from the main control unit 26. The program memory 24 includes a ROM and stores an adjustment program and a normal program. The main memory 25 includes a RAM and stores data calculated by the main control unit 26.

  When the adjustment load is connected to the high frequency lighting circuit 3 and the adjustment signal is input from the external signal input unit 6, the main control unit 26 reads the adjustment program from the program memory 24, and the adjustment program Is configured to perform. The arithmetic processing unit 26a takes in the detection value (electric characteristic) detected by the electric characteristic detection means 5 from the AD converter 22 at a constant sampling interval, and the detection value (electric characteristic) becomes a predetermined value (target value). Further, the high-frequency lighting circuit 3 is controlled via the drive circuit 23, and a control coefficient is calculated for each detected value (electrical characteristic).

  The control coefficient is, for example, a control gain or a control response time of the control equation. The control expression is: U (n) for the control amount, U (n-1) for the control amount at the immediately preceding (immediate) timing, K1 for the control gain coefficient, K2 for the control response time coefficient, and Vd for the current detection value. (N) If the detection value at the previous timing is Vd (n-1) and the target value of the detection value is Vm, U (n) = U (n-1) + K1 * (Vm-Vd (n) ) + K2 * (Vm−Vd (n−1)). Here, the detected value is converted into a voltage value. The control amount U (n) is an on / off frequency for driving the field effect transistor FET1 and the field effect transistors FET2 and FET3, an on duty of driving, and the like.

  The control coefficients K1 and K2 are stored in the nonvolatile memory 8 with an upper limit value and a lower limit value set in advance for each detection value (electrical characteristic) detected by the electrical characteristic detecting means 5. The arithmetic processing unit 26a calculates a control amount U (n) for controlling the high-frequency lighting circuit 3 from the control expression so that the detected value becomes a predetermined value (target value). At this time, the calculation processing unit 26a calculates the control coefficients K1 and K2 so as to be determined from the range between the upper limit value and the lower limit value.

  When the control coefficients K1 and K2 are determined from the range of the upper limit value and the lower limit value for all the detected values (electrical characteristics) detected by the electrical characteristic detection means 5, the main control unit 26 determines the control coefficient K1. , K2 are stored in the non-volatile memory 8 and the notification signal output unit 7 is controlled to output a notification signal indicating the completion of adjustment. The notification signal output unit 7 outputs DC 5V to the signal output terminal 20e. Thereby, the light emitting diode PD5 of the display device 21 connected to the signal output terminals 20a to 20e is turned on. When the light emitting diode PD5 is turned on, the end of adjustment is notified (visually recognized).

  Further, in the arithmetic processing by the arithmetic processing unit 26a, the control amount U (n) of the above control formula for controlling the high-frequency lighting circuit 3 so that the detected value detected by the electrical characteristic detecting means 5 becomes a predetermined value (target value). The main control unit 26 controls the notification signal output unit 7 to output an unadjustable notification signal when it cannot be determined from the range between the upper limit value and the lower limit value of the control coefficients K1 and K2.

  The notification signal output unit 7 outputs DC5V to the signal output terminal 20a (signal output terminal 20b) when the arithmetic processing by the arithmetic processing unit 26a is not adjustable with respect to the input voltage (output voltage) of the boost chopper circuit 11. . Thereby, the light emitting diode PD1 (light emitting diode PD2) of the display device 21 is turned on. When the light-emitting diode PD1 (light-emitting diode PD2) is turned on, an inability to adjust the input voltage (output voltage) of the boost chopper circuit 11 is notified (visually recognized).

  The notification signal output unit 7 outputs DC 5V to the signal output terminal 20c (signal output terminal 20d) when the calculation processing by the calculation processing unit 26a is not adjustable with respect to the lamp voltage (lamp current) of the fluorescent lamp 4. To do. Thereby, the light emitting diode PD3 (light emitting diode PD4) of the display device 21 is turned on. When the light-emitting diode PD3 (light-emitting diode PD4) is turned on, an inability to adjust the lamp voltage (lamp current) of the fluorescent lamp 4 is notified (visually recognized).

  When the fluorescent lamp 4 is connected to the high-frequency lighting circuit 3 and the commercial AC power supply Vs is turned on, the main control unit 26 reads the normal program from the program memory 24 and controls based on the normal program. It is configured to perform an operation. That is, the control coefficients K1 and K2 determined by the arithmetic processing unit 26a are read from the nonvolatile memory 8, and the control amount U (n) is calculated by the above control equation using the control coefficients K1 and K2. Thereby, the high frequency lighting circuit 3 is controlled so that the detection value (electric characteristic) detected by the electric characteristic detection means 5 becomes a predetermined value (target value). The fluorescent lamp 4 is stably lit at the rated value or near the rated value.

  Next, the operation of the first embodiment of the present invention will be described with reference to FIGS.

  In FIG. 2, when the commercial AC power supply Vs (DC power supply 2) is turned on, the main control unit 26 (arithmetic processing unit 26a) determines whether or not an adjustment signal is input from the external signal input I / F unit 18. Judgment is made (step S1). When the adjustment signal is input, the adjustment program is read from the program memory 24, and a control operation is executed based on the adjustment program (step S2). If no adjustment signal is input, the normal program is read from the program memory 24 and the normal program is executed (step S3).

  In FIG. 3, when the adjustment program is executed, it is determined whether or not an adjustment load is connected to the high-frequency lighting circuit 3 instead of the fluorescent lamp 4. If the adjustment load is not connected, the adjustment operation is performed. Not performed (step S4).

  When the adjustment load is connected to the high-frequency lighting circuit 3, the main control unit 26 reads the upper limit value and the lower limit value of the control coefficients K1 and K2 from the nonvolatile memory 8 (step S5). Then, among the detection values (electrical characteristics) detected by the electrical characteristic detecting means 5, the detection value that is first subjected to arithmetic processing by the arithmetic processing unit 26a is selected (step S6).

  Next, the detection value calculated by the arithmetic processing unit 26a is fetched from the AD converter 22 at a constant sampling interval (step S7). Then, the control amount U (n) for controlling the on / off operations of the field effect transistor FET1 and the field effect transistors FET2 and FET3 of the high-frequency lighting circuit 3 through the drive circuit 23 so that the detected value becomes a predetermined value (target value). ) And control coefficients K1 and K2 are calculated from the control equation (step S8).

  Then, the main control unit 26 determines whether or not the control coefficients K1 and K2 are determined (step S9). When the control coefficients K1 and K2 are not determined, the calculation of the control amount U (n) and the control coefficients K1 and K2 is continued (step S8). Here, when the control coefficients K1 and K2 cannot be determined even after performing the calculation for a predetermined time, the control coefficients K1 and K2 are determined outside the range of the upper limit value and the lower limit value. Alternatively, the adjustment is impossible and the process proceeds to step S12.

  When the control coefficients K1 and K2 are determined, it is determined whether or not the control coefficients K1 and K2 are within the upper limit value and the lower limit value (step S10). When the control coefficients K1 and K2 are within the range between the upper limit value and the lower limit value, the adjustment with respect to the current detection value (electrical characteristic) is completed, and the control coefficients K1 and K2 are temporarily written in the main memory 25. (Step S11).

  If the control coefficients K1 and K2 are outside the upper limit and lower limit ranges, the current detection value (electrical characteristic) cannot be adjusted, and the main control unit 26 cannot be adjusted from the notification signal output unit 7. A notification signal (DC5V) is output (step S12).

  Then, it is determined whether or not the calculation processing of the control coefficients K1 and K2 has been performed on all the detected values (electrical characteristics) detected by the electrical characteristic detecting means 5 (step S13). When calculation processing is not performed for all detection values, a detection value to be calculated next is selected (step S14). Thereafter, steps S7 to S13 are executed.

  Further, when the calculation processing of the control coefficients K1 and K2 is executed for all the detected values (electrical characteristics) detected by the electrical characteristic detecting means 5, it is determined whether there is an uncontrollable detected value (step S15). If there is an uncontrollable detection value, an adjustment signal is output in step S12, and the adjustment operation is terminated.

  If there is no uncontrollable detection value, the adjustment for all the detection values (electrical characteristics) detected by the electrical characteristic detection means 5 has been completed satisfactorily. The coefficients K1 and K2 are read and stored (written) in the nonvolatile memory 8 (step S16). Furthermore, the notification signal output unit 7 outputs a notification signal (DC5V) indicating completion of adjustment (step S17). As a result, the light emitting diode PD5 of the display device 21 is turned on, and it is notified that the adjustment of the discharge lamp lighting device 1 has been successfully completed.

  As described above, an adjustment load is connected to the high-frequency lighting circuit 3, an adjustment signal is input to the signal input terminals 19a and 19b, and the commercial AC power supply Vs (DC power supply 2) is turned on. Since the adjustment program is executed and the control coefficients K1 and K2 of the control formula are determined, the adjustment for controlling the high-frequency lighting circuit 3 and the fluorescent lamp 4 is automatically performed. In addition, since a notification signal indicating completion of adjustment is output from the notification signal output unit 7, the completion of adjustment is confirmed by visually confirming that the light emitting diode PD5 is turned on on the display device 21. Therefore, it is possible to prevent the human error in the adjustment without requiring time and effort for the adjustment, and it is possible to quickly grasp the quality of the adjustment.

  Of the detected values (electrical characteristics) detected by the electrical characteristic detecting means 5, the detected values (electrical characteristics) that cannot be determined within the range between the upper limit value and the lower limit value set in advance for the control coefficients K1 and K2 cannot be adjusted. As a result, it is possible to feed back information on detected values that cannot be adjusted to the manufacturing process and the design process. As a result, the quality of the discharge lamp lighting device 1 is improved. Can be improved.

  In FIG. 2, when the fluorescent lamp 4 is connected to the high frequency lighting circuit 3 and the adjustment signal is not input to the signal input terminals 19a and 19b, the commercial AC power supply Vs (DC power supply 2) is turned on. The unit 26a reads the normal program from the program memory 24, and controls the high frequency lighting circuit 3 based on the normal program (step S3). That is, the arithmetic processing unit 26a performs a normal operation by a normal program.

  In FIG. 4, the arithmetic processing unit 26a reads the control coefficients K1 and K2 from the nonvolatile memory 8 (step S18) and stores (writes) them in the main memory 25 (step S19). By storing the control coefficients K1 and K2 in the main memory 25, the reading and writing of the control coefficients K1 and K2 to and from the main memory 25 are speeded up in the arithmetic processing in the arithmetic processing unit 26a.

  And the arithmetic processing part 26a feedback-controls the high frequency lighting circuit 3 so that the detection value which the electrical property detection means 5 detected becomes a predetermined value (target value) (step S20). For example, the on / off operations of the field effect transistor FET1 and the field effect transistors FET2 and FET3 are controlled so that the fluorescent lamp 4 is lit at the rated lamp power so that the output voltage of the boost chopper circuit 11 becomes a predetermined value 400V. . Then, when the commercial AC power supply Vs (DC power supply 2) is cut off (OFF), the control operation of the main control unit 26 is stopped (step S21).

  Next, a second embodiment of the present invention will be described.

  FIG. 5 is a schematic circuit diagram of a discharge lamp lighting device showing a second embodiment of the present invention. Note that the same parts as those in FIG.

  The discharge lamp lighting device 28 shown in FIG. 5 differs from the discharge lamp lighting device 1 shown in FIG. 1 in the adjustment operation of the main control unit 26 (arithmetic processing unit 26a) and the notification signal output unit 29.

  The arithmetic processing unit 26a sets in advance the order in which arithmetic processing is performed on the detection value (electric characteristic) detected by the electric characteristic detecting means 5. In other words, the control coefficients K1 and K2 of the control formula are determined in order from the detected value important for realizing the function of the discharge lamp lighting device 1. For example, the arithmetic processing is executed in the order of the detected values of the input voltage of the boost chopper circuit 11 (the output voltage of the DC power supply 2), the output voltage, the lamp current of the fluorescent lamp 4, and the lamp voltage.

  Then, the main control unit 26 performs arithmetic processing on the detected values that cannot determine the control coefficients K1 and K2 among the detected values (electrical characteristics) detected by the electrical characteristic detecting means 5 in step S12 of FIG. The order of calculation processing in the unit 26a is configured to be output from the notification signal output unit 29 as an unadjustable notification signal. The notification signal output unit 29 outputs a pulse signal having a voltage width corresponding to the order to the signal output terminals 30a and 30b.

  A display device 31 is connected to the signal output terminals 30a and 30b. The display device 31 displays the numbers in the order on the display unit 31a according to the pulse signal. By visually recognizing this number, it is possible to specify a detection value (electrical characteristic) that cannot be adjusted.

  When the notification signal output unit 29 is controlled to output the adjustment completion notification signal from the main control unit 26 in step S17 of FIG. 3, the notification signal output unit 29 outputs a pulse signal having a voltage width corresponding to the notification signal to the signal output terminal 30a. , 30b. The display device 31 displays, for example, an adjustment end character on the display unit 31a according to the pulse signal.

  Next, a third embodiment of the present invention will be described.

  6 and 7 show a third embodiment of the present invention, FIG. 6 is a schematic circuit diagram of a discharge lamp lighting device, and FIG. 7 is a flowchart at the time of adjusting operation of the control means. The same parts as those in FIG. 1 and FIG.

  In the discharge lamp lighting device 32 shown in FIG. 6, in the discharge lamp lighting device 1 shown in FIG. 1, the main control unit 26 sets one detection value for the detection value (electric characteristic) detected by the electric characteristic detection means 5. When the adjustment failure occurs, the notification signal output unit 33 outputs an adjustment error notification signal, and when all the detected values have been successfully adjusted, the adjustment completion notification signal is output. That is, as shown in FIG. 7, in place of step S12 in FIG. 3, non-adjustable information is written into the main memory 25 (step S18), and in step S15, non-adjustable information is written into the main memory 25. If so, a notification signal that cannot be adjusted is output (step S19).

  The notification signal output unit 33 outputs an unadjustable notification signal (DC5V) to the signal output terminal 34a, and outputs an adjustment end notification signal (DC5V) to the signal output terminal 34b. A display device 35 is connected to the signal output terminals 34a and 34b. The signal output terminal 34a is connected to the light emitting diode PD1 through the resistor R1, and the signal output terminal 34b is connected to the light emitting diode PD5 through the resistor R5.

  When the notification signal output unit 33 outputs an unadjustable notification signal (DC5V) to the signal output terminal 34a, the light emitting diode PD1 is turned on, and the adjustment completion notification signal (DC5V) is output to the signal output terminal 34b. And the light emitting diode PD5 is turned on. By visually confirming the lighting of the light emitting diode PD1 and the light emitting diode PD5, it is possible to quickly determine whether the adjustment is good or bad.

  Next, a fourth embodiment of the present invention will be described.

  FIG. 8 is a schematic circuit diagram of a discharge lamp lighting device showing a fourth embodiment of the present invention. Note that the same parts as those in FIG.

  The discharge lamp lighting device 36 shown in FIG. 8 is the same as the discharge lamp lighting device 1 shown in FIG. 1 except that the external signal input unit 6 and the notification signal output unit 7 are replaced with a receiving circuit 37 and a radio signal. A transmission circuit 38 for outputting a notification signal indicating that adjustment is impossible or adjustment is completed is provided.

  For example, the adjustment signal can be transmitted as a radio signal to the reception circuit 37 using a remote control device (not shown), and the notification signal can be received from the transmission circuit 38 to display the information of the notification signal on the display screen. Therefore, there is no need to connect the signal input terminals 19a and 19b to the external device for sending the adjustment signal and the signal output terminals 20a to 20e to the display device 21 for inputting the notification signal. Adjustment work for determining K2 can be performed more easily and quickly.

  Note that the reception circuit 37 and the transmission circuit 38 may be formed as an integrated transmission / reception circuit.

  Next, a fifth embodiment of the present invention will be described.

  FIG. 9 is a schematic circuit diagram of a power supply device showing a fifth embodiment of the present invention. Note that the same parts as those in FIG.

  A power supply device 39 shown in FIG. 9 includes a power supply circuit 40 instead of the high-frequency lighting circuit 3 in the discharge lamp lighting device 1 shown in FIG. 1, and a load 41 is connected between the outputs of the power supply circuit 40. The power supply circuit 40 is configured similarly to the boost chopper circuit 11 shown in FIG. The load 41 is, for example, a motor. Further, in place of the lamp voltage detection circuit 16 and the lamp current detection circuit 17, a load current detection circuit 42 for detecting a load current is provided to form an electrical characteristic detection means 43.

  In the same way as the discharge lamp lighting device 1 shown in FIG. 1, the power supply device 39 executes the adjustment program during the adjustment operation, and the detection value (electric characteristic) detected by the electric characteristic detection means 43 is a predetermined value (target value). Thus, control coefficients K1 and K2 of the control equation for controlling the power supply circuit 40 are determined. In the display device 44, the inadequate adjustment of each detection value is determined by the lighting of the light emitting diodes PD1, PD2, PD4, and the end of the adjustment is determined by the lighting of the light emitting diode PD5.

1 is a schematic circuit diagram of a discharge lamp lighting device showing a first embodiment of the present invention. Similarly, the flowchart which shows selection of adjustment operation and normal operation of a control means. Similarly, the flowchart at the time of adjustment operation of a control means. Similarly, the flowchart at the time of the normal operation | movement of a control means. The schematic circuit diagram of the discharge lamp lighting device which shows the 2nd Embodiment of this invention. The schematic circuit diagram of the discharge lamp lighting device which shows the 3rd Embodiment of this invention. Similarly, the flowchart at the time of adjustment operation of a control means. The schematic circuit diagram of the discharge lamp lighting device which shows the 4th Embodiment of this invention. The schematic circuit diagram of the power supply device which shows the 5th Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,28,32,36 ... Discharge lamp lighting device 2 ... DC power supply 3 ... High frequency lighting circuit 4 ... Fluorescent lamp 5 as a discharge lamp 5, 43 ... Electrical characteristic detection means 6 ... External signal input unit 7, 29, 33 ... Notification Signal output unit 8 ... Nonvolatile memory 9 as nonvolatile storage means ... Control means 37 ... Reception circuit 38 as external signal input part ... Transmission circuit 39 as notification signal output part ... Power supply device 40 ... Power supply circuit 41 ... Load

Claims (6)

Electrical characteristic detection means for detecting at least one electrical characteristic of a DC power supply, a power supply circuit and a load;
An external signal input unit for inputting an adjustment signal from the outside;
A notification signal output unit for outputting an adjustment completion or non-adjustment notification signal to the outside;
Non-volatile storage means for storing control coefficients;
During the adjustment operation when the adjustment load is connected to the power supply circuit, the adjustment program is executed with the adjustment signal input via the external signal input unit, and the power supply is set so that the electric characteristic detected by the electric characteristic detection means becomes a predetermined value. An arithmetic processing unit that controls the circuit to perform arithmetic processing on the control coefficient is provided, and an adjustment completion or non-adjustable notification signal is output from the notification signal output unit according to the control coefficient calculation processing by the calculation processing unit, and the calculation is performed. Control means configured to store the control coefficient in a non-volatile storage means when the processing unit determines the control coefficient;
A power supply device comprising: Electrical characteristic detection means for detecting at least one electrical characteristic of a DC power supply, a high-frequency lighting circuit and a discharge lamp;
An external signal input unit for inputting an adjustment signal from the outside;
A notification signal output unit for outputting an adjustment completion or non-adjustment notification signal to the outside;
Non-volatile storage means for storing control coefficients;
During the adjustment operation in which the adjustment load is connected to the high frequency lighting circuit, the adjustment program is executed by the adjustment signal input via the external signal input unit so that the electric characteristic detected by the electric characteristic detection means becomes a predetermined value. An arithmetic processing unit that controls the high-frequency lighting circuit to calculate the control coefficient, and outputs an adjustment end or non-adjustable notification signal from the notification signal output unit according to the control coefficient calculation processing by the calculation processing unit. Control means configured to store the control coefficient in a non-volatile storage means when the arithmetic processing unit determines the control coefficient;
A discharge lamp lighting device comprising:   3. The discharge lamp lighting device according to claim 2, wherein the external signal input unit is configured to input an adjustment signal as a radio signal, and the notification signal output unit is configured to output the notification signal as a radio signal.   The control means causes the notification signal output section to output a notification signal that cannot be adjusted with respect to an electrical characteristic that cannot determine a control coefficient among the electrical characteristics detected by the electrical characteristic detection means. Or the discharge lamp lighting device of 3.   The order in which the arithmetic processing unit performs the arithmetic processing on the electrical characteristics detected by the electrical characteristic detecting means is set, and the control means is a notification signal indicating that the order cannot be adjusted for the electrical characteristics for which the control coefficient cannot be determined. 5. The discharge lamp lighting device according to claim 2, wherein the discharge lamp lighting device is output from a notification signal output unit.   When the control unit determines the control coefficient within the range of the upper limit value and the lower limit value set in advance, the control unit outputs a notification signal of completion of adjustment, and when the control coefficient cannot be determined within the range The discharge lamp lighting device according to any one of claims 2 to 5, wherein an unadjustable notification signal is output.

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