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- Nachgewiesen in: USPTO Patent Applications
- Sprachen: English
- Document Number: 20170215263
- Publication Date: July 27, 2017
- Appl. No: 15/393615
- Application Filed: December 29, 2016
- Assignees: (Guangzhou, CN), (Guangzhou, CN)
- Claim: 1. A starting device for a CDM lamp, characterized in that the starting device comprises: a full-bridge inverter, which at least provides an output as a starting power source to initiate the CDM lamp to work normally; a driving circuit for driving the full-bridge inverter; a single-chip microcomputer, which is connected to the driving circuit; an ignition determining module, one end of which is connected to the full-bridge inverter to sense whether the output of the full-bridge inverter has powered on the CDM lamp, so as to determine whether ignition of the CDM lamp succeeds and then output a result of the determining to the single-chip microcomputer via the other end; wherein: if the single-chip microcomputer knows that the ignition succeeds, then the single-chip microcomputer controls the driving circuit to regulate the output of the full-bridge inverter so that the CDM lamp enters into a normal working state from a starting state; otherwise: in a preset time limit which allows multiple attempts of CDM lamp ignition, the single-chip microcomputer controls the driving circuit to regulate the output of the full-bridge inverter once every certain time, till the single-chip microcomputer knows that the ignition succeeds; if the ignition fails always and exceeds the time limit of ignition, the single-chip microcomputer switches off the driving circuit and suspends starting of the CDM lamp.
- Claim: 2. The starting device according to claim 1, characterized in that, preferably, the starting apparatus further comprises: a chopper circuit an output end of which is connected to the full-bridge inverter so as to provide input to the full-bridge inverter, and a control end of which is connected to the single-chip microcomputer such that the single-chip microcomputer can regulate output of the chopper circuit.
- Claim: 3. The starting device according to claim 1, characterized in that, when current flows through the CDM lamp, the ignition determining module can sense the current flowing through the CDM lamp, and/or obtaining a tube voltage of the CDM lamp.
- Claim: 4. The starting device according to claim 2, characterized in that the starting device further comprises: a full-bridge rectifier which provides an output for the chopper circuit to use.
- Claim: 5. The starting device according to claim 4, characterized in that the starting device further comprises: a power factor correcting circuit, an input end of which is connected to an output end of the full-bridge rectifier, while a bus line voltage output end of which is connected to an input end of the chopper circuit; moreover, the power factor correction circuit is controlled by the single-chip microcomputer.
- Claim: 6. The starting device according to claim 4, characterized in that the starting device further comprises: a fault displaying module which can display fault information to alert the user whether an input side of the full-bridge inverter has abnormalities.
- Claim: 7. A starting method for a CDM lamp, wherein the starting method is applied to a starting device for the CDM lamp, the starting device comprises a full bridge inverter connected to the CDM lamp, a driving circuit, a single-chip microcomputer and an ignition determining module; characterized in that the starting method specifically comprises steps below: S100: when the starting device is powered up, detecting whether a DC input voltage is present at an input side of the full-bridge inverter; if not, determining that the input side of the full-bridge inverter is abnormal; if present, proceeding to next step; S200: if the DC input voltage is present at the input side of the full-bridge inverter, the driving circuit being controlled by the single-chip microcomputer; within a set time length T0, continuously outputting, according to a certain set period, pulse of the period, so that the full-bridge inverter provides output to the CDM lamp; S300: determining, by the ignition determining module, whether the output provided by the full-bridge inverter within the time length T0 successfully ignites the CDM lamp, and outputting, by the ignition determining module, a result of the determining to the single-chip microcomputer; S400: if the single-chip microcomputer knows that the ignition succeeds through the step S300, controlling, by the single-chip microcomputer the driving circuit to regulate the output of the full-bridge inverter, so that the CDM lamp enters into a normal working state from a starting state; S500: if the single-chip microcomputer knows that the ignition failed through the step S300 and the DC input voltage is still present at the input side of the full-bridge inverter, the drive circuit being still controlled by the single-chip microcomputer; changing the previously set period, and continuously outputting, according to the changed set period within the time length T0, pulse of the period, so that the full-bridge inverter provides a new output to the CDM lamp; then, continuing to execute step S300; if the ignition determining module still determines that the ignition failed, executing step S600; otherwise, jumping to step S400; S600: accumulating the time length T0 in the executed step S500 and the time length T0 in the executed step S200, and determining whether the accumulated time length has exceeded a preset total time length T; if not, iteratively executing the step S500; otherwise, switching off pulse output of the driving circuit, confirming that a starting time-out fault is present, and transmitting an alert of starting time-out fault to the single-chip microcomputer.
- Claim: 8. The method according to claim 7, characterized in that: the DC input voltage in the step S100 is provided through an output of the chopper circuit, and the single-chip microcomputer can regulate the output of the chopper circuit.
- Claim: 9. The method according to claim 7, characterized in that: in step S300, when current flows through the CDM lamp, the ignition determining module can sense current flowing through the CDM lamp and/or obtain a tube voltage of the CDM lamp.
- Claim: 10. The method according to claim 7, characterized in that: an input of the chopper circuit is a DC current, and the DC current is obtained through an output of the full-bridge rectifier.
- Claim: 11. The method according to claim 10, characterized in that: the starting device further comprises a power factor correcting circuit, an input end of which is connected to an output end of the full-bridge rectifier, while a bus line voltage output end of which is connected to an input end of the chopper circuit; moreover, the power factor correction circuit is controlled by the single-chip microcomputer.
- Claim: 12. The method according to claim 7, characterized in that: the starting device further comprises: a fault displaying module which can display fault information to alert the user whether an input side of the full-bridge inverter has abnormalities in the step S100.
- Current International Class: 05; 02
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