CN202561804U - Electronic impulse ignition control device - Google Patents
Electronic impulse ignition control device Download PDFInfo
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- CN202561804U CN202561804U CN2012200208720U CN201220020872U CN202561804U CN 202561804 U CN202561804 U CN 202561804U CN 2012200208720 U CN2012200208720 U CN 2012200208720U CN 201220020872 U CN201220020872 U CN 201220020872U CN 202561804 U CN202561804 U CN 202561804U
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- 238000001514 detection method Methods 0.000 claims abstract description 38
- 238000002955 isolation Methods 0.000 claims description 24
- 238000004804 winding Methods 0.000 claims description 24
- 239000000446 fuel Substances 0.000 claims description 6
- 238000013016 damping Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000002093 peripheral effect Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
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Abstract
The utility model discloses an electronic impulse ignition control device, comprising an MCU, a switch circuit, an electromagnetic valve circuit, a voltage booster circuit, an ignition circuit and a feedback circuit, wherein the switch circuit, the electromagnetic valve circuit, the voltage booster circuit, the ignition circuit and the feedback circuit are respectively connected with the MCU; the voltage booster circuit comprises a transformer and a voltage boost feedback module; the primary side of the transformer is connected with the MCU to receive first voltage signals or second voltage signals from the MCU; the secondary side of the transformer is connected with the ignition circuit to correspondingly output ignition signals or flame detection and control signals to the ignition circuit; and two ends of the voltage boost feedback module are respectively connected with the secondary side of the transformer and the MCU to feed back the ignition signals or the flame detection and control signals output by the transformer to the MCU. Because an input end is adopted in the voltage boost circuit to input different first voltage signals and second voltage signals, and therefore many peripheral components used for transformer operation are not needed, and space and manufacturing costs are saved. The ignition signals or flame detection and control signals output from the transformer can be fed back to the MCU.
Description
Technical Field
The utility model relates to an ignition controller especially relates to an electronic pulse ignition controller.
Background
The conventional electronic pulse ignition controller includes an MCU100, and a switching circuit 600 respectively connected to the MCU100 for transmitting an on or off command to the MCU100, a solenoid valve circuit 200 for controlling the conduction or the cutoff of a fuel path based on a voltage signal received from the MCU100, a booster circuit 300 for generating a high voltage signal when the solenoid valve circuit 200 controls the conduction of the fuel path, an ignition circuit 400 for performing ignition based on the high voltage signal generated by the booster circuit 300, and a feedback circuit 500 for feeding back an operating state of the ignition circuit 400 to the MCU 100. Referring specifically to fig. 1, fig. 1 illustrates a logic block diagram of a conventional electronic pulse ignition controller. Fig. 2 shows an example of an existing booster circuit 300 for the booster circuit 300 therein. As shown in fig. 2, a general conventional booster circuit 300 includes a self-oscillation module connected to the MCU 100. The self-oscillation module comprises an isolation unit and a self-oscillation unit. Specifically, the isolation unit 1 includes a resistor R12 and a transistor Q5, and the isolation unit 2 includes resistors R9 and Q4. When the switch is turned ON, the 6 th pin or the 7 th pin of the MCU100 outputs a high level, the transistor Q5 is turned ON, that is, the isolation unit 1 is turned ON, and the self-oscillating unit including the transformer 310T1 outputs an ignition signal to the secondary side through self-oscillation to perform an ignition operation. At this time, pin 8 of the MCU100 outputs a low level, the transistor Q4 is turned off, the isolation unit 2 does not operate, and the oscillation circuit for transmitting the flame detection control signal is in an off state. When the ignition is successful, the pin 6 or the pin 7 of the MCU100 outputs a low level, and the transistor Q5 is turned off, i.e., the oscillation circuit for transmitting the ignition signal is in an off state, and the ignition operation is not performed. Meanwhile, pin 8 of the MCU100 outputs a high level, the transistor Q4 is turned on, and the isolation unit 2 operates such that the oscillation circuit for transmitting the flame detection control signal is in a turned-on state. In operation, the voltage of the flame detection control signal output by the voltage boost circuit 300 is lower than the voltage of the ignition signal. As can be seen from the above, in the conventional voltage boost circuit 300, the self-oscillation module includes two input terminals, one input voltage signal is input from the 6 th pin or the 7 th pin of the MCU100, and the other input voltage signal is input from the 8 th pin of the MCU100, and each input voltage signal is controlled by a respective isolation unit. The self-oscillation unit includes a transformer 310T1 and a plurality of auxiliary components for self-oscillation, wherein the primary of the transformer 310T1 must include two windings to maintain self-oscillation during both ignition operation and flame detection control operation. In addition, the secondary output terminal of the transformer 310 is connected only to the ignition circuit 400, and thus the high voltage signal output from the booster circuit 300 is used only for the ignition circuit 400 to perform ignition, and the MCU100 cannot know the high voltage signal used for ignition.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, boost circuit has two independent inputs among the electronic pulse ignition controller to among the prior art to make the peripheral spare part that supports the transformer and carry out work many, and MCU can't learn the transformer and export the defect to the output signal of firing circuit, provide an electronic pulse ignition controller.
The utility model provides a technical scheme that its technical problem adopted is: the electronic pulse ignition controller comprises an MCU (microprogrammed control unit) and a switching circuit which is respectively connected with the MCU and is used for sending an opening or closing instruction to the MCU, an electromagnetic valve circuit which is used for controlling the conduction or the disconnection of a fuel passage based on a voltage signal received from the MCU, a booster circuit which is used for generating a high-voltage signal when the electromagnetic valve circuit controls the conduction of the fuel passage, an ignition circuit which is used for igniting based on the high-voltage signal generated by the booster circuit and a feedback circuit which is used for feeding back the working state of the ignition circuit to the MCU, wherein the booster circuit comprises:
a transformer, a primary of the transformer being connected with the MCU to receive a first voltage signal or a second voltage signal from the MCU; the secondary of the transformer is connected with the ignition circuit to output an ignition signal or a flame detection control signal to the ignition circuit correspondingly;
and the two ends of the boosting feedback module are respectively connected with the secondary side of the transformer and the MCU so as to feed back the ignition signal or the flame detection control signal output by the transformer to the MCU.
In the electronic pulse ignition controller according to an embodiment of the present invention, the first voltage signal and the second voltage signal are pulse width modulation signals, respectively.
In an electronic pulse ignition controller according to an embodiment of the present invention, the primary winding of the transformer includes an equivalent winding.
In an electronic pulse ignition controller according to an embodiment of the present invention, the equivalent winding includes one winding.
In an electronic pulse ignition controller according to an embodiment of the present invention, the equivalent winding includes a plurality of windings connected in series.
In an electronic pulse ignition controller according to an embodiment of the present invention, the transformer comprises a plurality of available secondary outputs.
In the basis the utility model discloses in the electronic pulse ignition controller, the feedback module that steps up includes damping resistor, wherein damping resistor's both ends respectively with the secondary of transformer with MCU connects.
According to the utility model discloses in the electronic pulse ignition controller, the feedback module that steps up still includes divider resistor, divider resistor's one end is connected MCU with between the decay resistance, other end ground connection.
In the electronic pulse ignition controller according to the embodiment of the present invention, the boost circuit further includes an isolation module, and both ends of the isolation module are respectively connected to the transformer and the MCU; wherein,
the isolation module comprises a current limiting resistor and a transistor; one end of the current limiting resistor is connected with the MCU and used for receiving the voltage signal from the MCU; the base electrode of the transistor is connected with the other end of the current-limiting resistor, the emitting electrode of the transistor is grounded, and the collector electrode of the transistor is connected with the primary electrode of the transformer.
In the electronic pulse ignition controller according to the embodiment of the present invention, the isolation module is integrated in the MCU.
The utility model discloses, following beneficial effect has: adopt the utility model discloses an ignition controller because adopt an input in boost circuit, both input first voltage signal, input second voltage signal again, consequently saved many peripheral components and parts that are used for transformer work, for example, saved two triodes, two diodes, two electric capacity, four resistance and a winding. Thereby saving space and manufacturing cost. In addition, an ignition signal or a flame detection control signal output from the transformer can be fed back to the MCU, the MCU can perform analysis processing on the fed-back ignition signal or flame detection control signal to adjust a first voltage signal or a second voltage signal output next time, so that the ignition operation or the flame detection operation is correspondingly changed by changing the ignition signal or the flame detection control signal output by the transformer, and the work of the booster circuit is more intelligent. In other words, the first voltage signal or the second voltage signal output each time is output feedback based on the last output ignition signal or the last output flame detection control signal, so that the consistency of the output signals is ensured, the requirement on the consistency of components is reduced, the yield of mass production of products is improved, and the production cost is reduced.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a logic block diagram of a prior art electronic pulse ignition controller;
fig. 2 is a circuit diagram of a conventional booster circuit 300;
fig. 3 is a logic block diagram of an electronic pulse ignition controller in accordance with an embodiment of the present invention;
fig. 4 is an example circuit diagram of a boost circuit 300 in accordance with an embodiment of the present invention;
fig. 5 is a logic block diagram of an electronic pulse ignition controller in accordance with a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
In the preferred embodiment of the present invention, as shown in fig. 3, the boosting circuit 300 includes a transformer 310 and a boosting feedback module 320. Wherein the primary of the transformer 310 is connected with the MCU100 to receive the first voltage signal or the second voltage signal from the MCU 100; the secondary of the transformer 310 is connected with the ignition circuit 400 to output an ignition signal or a flame detection control signal to the ignition circuit 400 accordingly. In addition, two ends of the boost feedback module 320 are respectively connected to the secondary side of the transformer 310 and the MCU100 to feed back the ignition signal or the flame detection control signal output by the transformer 310 to the MCU100 after voltage reduction processing. Fig. 4 shows a specific circuit diagram of the boost circuit 300 according to the preferred embodiment of the present invention, and the boost circuit 300 of the present invention will be explained by taking this preferred embodiment as an example.
Specifically, the MCU100 can adopt various models of central processing units available on the market, and can be customized as needed. The MCU100 is configured to modulate and output electrical signals (including a first voltage signal and a second voltage signal), and may further receive an ignition signal or a flame detection control signal output by the transformer 310, so that the output signal may be analyzed and the first voltage signal or the second voltage signal input next time may be adjusted based thereon. In the preferred embodiment of the present invention, the 2 nd pin of the MCU100 is a signal output pin, through which the first voltage signal or the second voltage signal is output to the transformer 310. The 15 th pin is a signal input pin, and is configured to receive an ignition signal or a flame detection control signal output by the transformer 310, where the ignition signal or the flame detection control signal corresponds to the output first voltage signal or the output second voltage signal, respectively. The 16 th pin is connected to the power source VCC and to ground through a capacitor C10. The 1 st pin is directly grounded. In actual operation, the first voltage signal is different from the second voltage signal, so in order to output both the first voltage signal and the second voltage signal from the output pin, two different signal sources may be adopted in the MCU100, and the MCU100 controls the switching of the two signal sources, for example, one signal source is switched on to output the first voltage signal when performing an ignition operation, and the other signal source is switched on to output the second voltage signal when performing a flame detection operation. Of course, other methods can be used as long as the switching of different voltage signals can be realized at the input pin. In the present invention, it is preferable to use a pulse width modulation signal (PWM) as the output signal (the first voltage signal or the second voltage signal). Specifically, signals of different voltages can be obtained by adjusting the duty ratio of the PWM signal, for example, a PWM signal having a large duty ratio can be used as the first voltage signal, and a PWM signal having a small duty ratio can be used as the second voltage signal.
The transformer 310 (i.e., transformer T shown in fig. 4) includes a primary winding and a secondary winding, each having a primary input and a secondary output. In the present invention, the primary winding of the transformer 310 includes an equivalent winding, which may be a winding or an equivalent winding formed by a plurality of windings connected in series, and can be specifically set as required in actual operation. The primary winding includes a power supply terminal, which is connected to power supply VDD and to ground through capacitor C14, and a primary input terminal, which is connected to the collector of transistor Q1. The secondary winding of the transformer 310T includes a secondary output terminal and a ground terminal, wherein the ground terminal is directly grounded. The transformer 310 has a plurality of available secondary outputs, two of which are shown in fig. 4, a secondary output a and a secondary output B, respectively. The following discussion will be described with the secondary output terminal a operating as an example. The secondary output terminal a is connected to the ignition circuit 400, thereby outputting an ignition signal or a flame detection control signal to the ignition circuit 400.
The boost feedback module 320 comprises an attenuation resistor R31, wherein one end of the attenuation resistor R31 is connected to the secondary output terminal a for receiving the ignition signal or the flame detection control signal output by the transformer 310; the other end is connected to a 15 th pin (i.e., a signal input end) of the MCU100, and is configured to input the attenuated ignition signal or the flame detection control signal to the MCU 100. In this process, the ignition signal and the flame detection control signal are both high-voltage signals and cannot be directly input to the MCU100 for analysis, so the ignition signal or the flame detection control signal output from the secondary output terminal a can be attenuated to a low-voltage signal suitable for the MCU100 by the boost feedback module 320 (the attenuating resistor R31), and the MCU100 is not damaged.
In a preferred embodiment of the present invention, the boost feedback module 320 further includes a voltage dividing resistor R32, wherein one end of the voltage dividing resistor R32 is connected between the MCU100 and the attenuating resistor R31, and the other end is grounded. The voltage dividing resistor R32 may divide the high voltage signal output from the secondary output terminal a, thereby further reducing the voltage value of the high voltage signal output from the secondary output terminal a at point X. The voltage dividing resistor R32 may be provided or the voltage dividing resistor R32 may not be provided.
In a preferred embodiment of the present invention, as shown in fig. 4 and 5, the voltage boost circuit 300 further includes an isolation module 330. The isolation module 330 is connected between the primary side of the transformer 310 and the MCU100, and is configured to control the operating state of the transformer 310, so as to isolate the transformer 310 from the MCU100, and avoid the influence of the voltage signal on the transformer 310 on the MCU 100. The isolation module 330 includes a current limiting resistor R8 and a transistor Q1. One end of the current limiting resistor R8 is connected to the 2 nd pin (i.e., the signal output pin) of the MCU100 to receive the first voltage signal or the second voltage signal from the MCU 100. The transistor Q1 has a base connected to the other end of the current limiting resistor R8, an emitter connected to ground, and a collector connected to the primary input of the transformer 310. When the base voltage signal of the input transistor Q1 is at a high level, the transistor Q1 is turned on, and the isolation module 330 is turned on; when the input base voltage signal is low, the transistor Q1 is turned off and the isolation module 330 is turned off. The isolation module 330 may be provided or the isolation module 330 may not be provided. In a preferred embodiment of the present invention, the isolation module 330 may be integrated into the MCU100, thereby reducing space.
The operation of the boost circuit 300 according to the embodiment of the present invention will be discussed. When the ignition operation is required, the 2 nd pin of the MCU100 outputs a PWM signal with a large duty ratio as a first voltage signal, the isolation module 330 is turned on, the first voltage signal is boosted to an ignition signal through the transformer 310, and the ignition signal is input to the ignition circuit 400 for the ignition operation. Since the duty ratio of the input first voltage signal is large, the voltage of the output ignition signal is correspondingly high. In addition, the ignition signal is reduced by the voltage boosting feedback module 320 and then fed back to the MCU100 from the 15 th pin of the MCU100, so that the MCU100 can process and analyze the ignition signal fed back, and can know whether the ignition signal can be normally ignited, and adjust the first voltage signal during the next ignition operation based on the result. After the ignition is successful, the MCU100 adjusts the duty ratio of the PWM signal output from the 2 nd pin, so as to output the PWM signal with a smaller duty ratio as the second voltage signal, and accordingly outputs the flame detection control signal from the secondary output terminal of the transformer 310, where the voltage of the flame detection control signal output accordingly is lower because the duty ratio of the second voltage signal is relatively smaller. Similarly, the flame detection control signal is input to the ignition circuit 400 to control the flame detection, and the flame detection control signal is stepped down by the step-up feedback module 320 and then fed back to the MCU 100. From above operation process can see, according to the utility model discloses when booster circuit 300 exports ignition signal or flame detection control signal, still can feed back MCU100 with the ignition signal or the flame detection control signal of this output after the step-down of feedback module 320 that steps up and handle the analysis, MCU100 can adjust the first voltage signal or the second voltage signal of next output according to the result of analysis processes. Taking the ignition operation as an example, in the process, the MCU100 can adjust both the duty ratio of the output first voltage signal to adjust the voltage value of the ignition signal for the ignition operation of the ignition circuit 400, and the frequency of the first voltage signal to match the operation of the transformer to obtain the optimal ignition signal, etc.
It can be seen from the above that, adopt the utility model discloses an ignition controller, because adopt an input in boost circuit, both input first voltage signal, input second voltage signal again, consequently saved many peripheral components and parts that are used for transformer work, for example, compare with current boost circuit in fig. 2, the utility model provides a boost circuit (as shown in fig. 4) has saved two triodes, two diodes, two electric capacity, four resistance and a winding. Thereby saving space and manufacturing cost. In addition, an ignition signal or a flame detection control signal output from the transformer can be fed back to the MCU, the MCU can perform analysis processing on the fed-back ignition signal or flame detection control signal to adjust a first voltage signal or a second voltage signal output next time, so that the ignition operation or the flame detection operation is correspondingly changed by changing the ignition signal or the flame detection control signal output by the transformer, and the work of the booster circuit is more intelligent. In addition, the transformer performing self-oscillation has a plurality of selectable secondary output terminals, improving the flexibility of the circuit.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (10)
1. An electronic pulse ignition controller comprising an MCU and, connected to the MCU respectively, a switching circuit for sending an on or off command to the MCU, an electromagnetic valve circuit for controlling the conduction or the shutdown of a fuel passage based on a voltage signal received from the MCU, a booster circuit for generating a high voltage signal when the electromagnetic valve circuit controls the conduction of the fuel passage, an ignition circuit for controlling an ignition operation based on the high voltage signal generated by the booster circuit, and a feedback circuit for feeding back an operating state of the ignition circuit to the MCU, characterized in that the booster circuit comprises:
a transformer, a primary of the transformer being connected with the MCU to receive a first voltage signal or a second voltage signal from the MCU; the secondary of the transformer is connected with the ignition circuit to output an ignition signal or a flame detection control signal to the ignition circuit correspondingly;
and the two ends of the boosting feedback module are respectively connected with the secondary side of the transformer and the MCU so as to feed back the ignition signal or the flame detection control signal output by the transformer to the MCU.
2. The electronic pulse ignition controller of claim 1, wherein the first voltage signal and the second voltage signal are each pulse width modulated signals.
3. The electronic pulse ignition controller of claim 1, wherein the primary winding of the transformer comprises an equivalent winding.
4. The electronic pulse ignition controller of claim 3, wherein the equivalent winding comprises one winding.
5. The electronic pulse ignition controller of claim 3, wherein the equivalent winding comprises a plurality of windings in series.
6. The electronic pulse ignition controller of claim 1, wherein the transformer includes a plurality of available secondary outputs.
7. The electronic pulse ignition controller of claim 1, wherein the boost feedback module comprises a damping resistor, wherein two ends of the damping resistor are connected to the secondary of the transformer and the MCU, respectively.
8. The electronic pulse ignition controller of claim 7, wherein the boost feedback module further comprises a voltage divider resistor, one end of the voltage divider resistor is connected between the MCU and the attenuation resistor, and the other end of the voltage divider resistor is grounded.
9. The electronic pulse ignition controller according to any one of claims 1 to 8, wherein the boost circuit further comprises an isolation module, and both ends of the isolation module are respectively connected with the transformer and the MCU; wherein,
the isolation module comprises a current limiting resistor and a transistor; one end of the current limiting resistor is connected with the MCU and used for receiving the voltage signal from the MCU; the base electrode of the transistor is connected with the other end of the current-limiting resistor, the emitting electrode of the transistor is grounded, and the collector electrode of the transistor is connected with the primary electrode of the transformer.
10. The electronic pulse ignition controller of claim 9, wherein the isolation module is integrated in the MCU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200208720U CN202561804U (en) | 2012-01-17 | 2012-01-17 | Electronic impulse ignition control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200208720U CN202561804U (en) | 2012-01-17 | 2012-01-17 | Electronic impulse ignition control device |
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| Publication Number | Publication Date |
|---|---|
| CN202561804U true CN202561804U (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200208720U Expired - Fee Related CN202561804U (en) | 2012-01-17 | 2012-01-17 | Electronic impulse ignition control device |
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| CN (1) | CN202561804U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713126A (en) * | 2013-12-12 | 2015-06-17 | 罗震威 | Bluetooth electronic cigarette lighter and use method thereof |
| CN105716109A (en) * | 2014-12-22 | 2016-06-29 | 阿自倍尔株式会社 | Ignition device and combustion control device |
| CN109780570A (en) * | 2019-01-25 | 2019-05-21 | 珠海格力电器股份有限公司 | Ignition fire detection circuit based on BOOST principle and gas wall-mounted furnace |
| CN109780569A (en) * | 2019-01-25 | 2019-05-21 | 珠海格力电器股份有限公司 | Pulse ignition circuit and gas hanging stove based on Buck principle |
| CN110906362A (en) * | 2019-12-06 | 2020-03-24 | 深圳市中微半导体有限公司 | Ignition control circuit for single-cell thermocouple kitchen range |
-
2012
- 2012-01-17 CN CN2012200208720U patent/CN202561804U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104713126A (en) * | 2013-12-12 | 2015-06-17 | 罗震威 | Bluetooth electronic cigarette lighter and use method thereof |
| CN105716109A (en) * | 2014-12-22 | 2016-06-29 | 阿自倍尔株式会社 | Ignition device and combustion control device |
| CN109780570A (en) * | 2019-01-25 | 2019-05-21 | 珠海格力电器股份有限公司 | Ignition fire detection circuit based on BOOST principle and gas wall-mounted furnace |
| CN109780569A (en) * | 2019-01-25 | 2019-05-21 | 珠海格力电器股份有限公司 | Pulse ignition circuit and gas hanging stove based on Buck principle |
| CN109780569B (en) * | 2019-01-25 | 2020-06-26 | 珠海格力电器股份有限公司 | Pulse ignition circuit and gas hanging stove based on Buck principle |
| CN110906362A (en) * | 2019-12-06 | 2020-03-24 | 深圳市中微半导体有限公司 | Ignition control circuit for single-cell thermocouple kitchen range |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20210117 |