CN216083464U - Flame ion induction control circuit with adjustable sensitivity - Google Patents
Flame ion induction control circuit with adjustable sensitivity Download PDFInfo
- Publication number
- CN216083464U CN216083464U CN202122696625.4U CN202122696625U CN216083464U CN 216083464 U CN216083464 U CN 216083464U CN 202122696625 U CN202122696625 U CN 202122696625U CN 216083464 U CN216083464 U CN 216083464U
- Authority
- CN
- China
- Prior art keywords
- resistor
- voltage
- flame
- battery
- circuit unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000006698 induction Effects 0.000 title claims abstract description 48
- 230000035945 sensitivity Effects 0.000 title claims abstract description 46
- 238000001514 detection method Methods 0.000 claims abstract description 45
- 230000010355 oscillation Effects 0.000 claims abstract description 34
- 230000009466 transformation Effects 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 18
- 238000013019 agitation Methods 0.000 claims 1
- 230000005284 excitation Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- 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
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
Landscapes
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The utility model discloses a flame ion induction control circuit with adjustable sensitivity, which comprises: the device comprises a battery voltage detection circuit unit, a control unit, an oscillation voltage transformation circuit, a flame detection circuit unit and an induction sensitivity adjusting unit, wherein the battery voltage detection circuit unit, the oscillation voltage transformation circuit unit, the induction sensitivity adjusting unit and the flame detection circuit unit are all in electric control connection with the control unit; the battery voltage detection circuit unit monitors the voltage state of the battery, when the voltage of the battery is lower than a set threshold value, the oscillation voltage transformation circuit unit generates an oscillation voltage VP, and the induction sensitivity adjusting unit adjusts the voltage through the control unit. The utility model solves the problem of false alarm and flameout when the existing ion induction type igniter or the battery is ignited with low electric quantity by detecting the voltage and the ignition instruction of the battery in real time and adjusting the sensitivity of the flame ion signal when the igniter is ignited or the battery is low in electric quantity.
Description
Technical Field
The utility model relates to the field related to igniter detection, in particular to a flame ion induction control circuit with adjustable sensitivity.
Background
The kitchen range point firearm generally adopts the dry battery power supply, to relying on the some firearms of flame ion signal detection flame, when some firearms are igniteed, because the air punctures and switches on, flame ion induction time shortens this moment, corresponds the sensitivity of induction and weakens. Simultaneously, when the battery electric quantity was low, battery voltage step-down, high frequency transformer's vary voltage thereupon reduces, and the excitation voltage of flame descends promptly, and negative voltage signal intensity that flame ionization produced just reduces, corresponds the sensitivity weakening, influences the accuracy that flame judged, triggers the unexpected flame-out protection mechanism of ignition circuit easily, influences user experience.
SUMMERY OF THE UTILITY MODEL
To overcome the disadvantages of the prior art, the present invention aims to provide a flame ion induction control circuit with adjustable sensitivity.
The utility model is realized by the following technical measures, and comprises a flame ion induction control circuit with adjustable sensitivity, which comprises a battery voltage detection circuit unit, a control unit, an oscillation voltage transformation circuit, a flame detection circuit unit and an induction sensitivity adjustment unit, wherein the battery voltage detection circuit unit, the oscillation voltage transformation circuit unit, the induction sensitivity adjustment unit and the flame detection circuit unit are electrically connected with the control unit; the battery voltage detection circuit unit monitors the voltage state of the battery, when the voltage of the battery is lower than a set threshold value, the oscillation voltage transformation circuit unit generates an oscillation voltage VP, and the induction sensitivity adjusting unit adjusts the voltage through the control unit.
Preferably, the control unit comprises a single chip microcomputer U1, and pin 10 of the single chip microcomputer U1 is grounded.
Preferably, the battery voltage detection circuit comprises resistors R16 and R17 which are connected in series, and the resistors R16 and R17 divide the voltage of the battery and then are connected to a pin 2 of the single chip microcomputer U1.
Preferably, the oscillation transforming circuit unit includes a transformer, a battery Vbat, a resistor R1, a resistor R2, a resistor R4, a transistor Q1, a capacitor C4 and a transistor Q2 are connected to a primary side coil of the transformer, and a secondary side coil of the transformer generates a flame surge voltage VP and outputs an ac oscillation voltage to the flame detecting circuit unit, wherein the resistor R2 is connected to a pin 9 of the single chip microcomputer U1.
Preferably, the flame detection circuit unit comprises a comparator U2, a capacitor C6, a capacitor C7, a diode D3, a resistor R7, a resistor R8, a resistor R12, a resistor R13, a resistor R14, a resistor R15 and a flame sensing needle, wherein the capacitor C6 is connected in series with a resistor R14 and then connected in parallel with a resistor R12 and a resistor R13, the resistor R12 is connected with the resistor R8, one end of the diode D9 is grounded, the capacitor C7 is connected in parallel with the resistor R7 and the resistor R11 and then respectively connected with a voltage node VCC 8296 of the comparator U2, a pin 5 of the comparator is grounded, and a pin 16 of the singlechip U1 is connected in series with the resistor R11; the resistor R13 is connected with the flame sensing needle, one end of the flame sensing needle is connected with one end of a digital ground J3, and the other end of the digital ground J3 is connected with a resistor R15 in series and then grounded.
Preferably, the sensing sensitivity adjusting unit comprises a resistor R9, a triode Q5 and a resistor R10, the resistor R9 is connected with the flame detection circuit unit, and the resistor R10 is connected with a pin 17 of the single chip microcomputer U1.
According to the flame ion induction control circuit with adjustable sensitivity, the battery voltage and the ignition command are monitored in real time, when the ignition command is received or the battery voltage drops to the set threshold value Vset, the induction sensitivity adjusting unit is set to be at a high level, the triode Q5 is conducted, the resistor R8 and the resistor R9 are connected in parallel, the bias voltage drops, the negative voltage amplitude at the negative end of the comparator is increased, and the sensitivity of flame detection is improved.
Drawings
FIG. 1 is a circuit schematic of an embodiment of the present invention;
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings.
The scheme is applied to a circuit of an ion induction type igniter, the ion induction type igniter boosts a battery voltage Vbat into a hundred-volt high-voltage pulse VP mainly through a high-frequency transformer and an oscillating circuit, and flames are ionized under the excitation of the high-voltage pulse to form a flame detection loop.
In one embodiment, referring to fig. 1, the device specifically includes a battery voltage detection circuit unit, a control unit, an oscillation voltage transformation circuit, a flame detection circuit unit, and an induction sensitivity adjustment unit, wherein the battery voltage detection circuit unit, the oscillation voltage transformation circuit unit, the induction sensitivity adjustment unit, and the flame detection circuit unit are electrically connected to the control unit; the battery voltage detection circuit unit monitors the voltage state of the battery, when the voltage of the battery is lower than a set threshold value, the oscillation voltage transformation circuit unit generates an oscillation voltage VP, and the induction sensitivity adjusting unit adjusts the voltage through the control unit. And monitoring the voltage of the battery and an ignition command in real time, and when the ignition command is received or the voltage of the battery is reduced to a set threshold value Vset, adjusting the bias voltage by the control system through the induction sensitivity adjusting unit to increase the negative voltage amplitude at the negative end of the comparator, and adjusting the sensitivity of the flame ion signal when the igniter is ignited or the battery is low in electric quantity.
The control unit comprises a single chip microcomputer U1, and a pin 10 of the single chip microcomputer U1 is grounded. Pin 2 of the single chip microcomputer U1 is connected with the battery voltage detection circuit unit, pin 9 is connected with the induction sensitivity adjustment unit, pin 17 is connected with the oscillation transformation circuit unit, pin 16 is connected with the flame detection circuit unit, and pin 20 is connected with VCC.
The battery voltage detection circuit comprises resistors R16 and R17 which are connected in series, and the resistors R16 and R17 divide the voltage of the battery and then are connected to a pin 2 of a single chip microcomputer U1. The resistor R16 and the resistor R17 divide the voltage of the battery, the single chip microcomputer U1 samples the VBat of the battery, and the voltage condition of the battery is detected.
The oscillation transformation circuit unit comprises a transformer, a coil on the primary side of the transformer is connected with a battery Vbat, a resistor R1, a resistor R2, a resistor R4, a triode Q1, a capacitor C4 and a triode Q2, a coil on the secondary side of the transformer generates a flame oscillation voltage VP and outputs an alternating-current oscillation voltage to the flame detection circuit unit, and the resistor R2 is connected with a pin 9 of a single chip U1. The device comprises a resistor R4, a capacitor C4, a triode Q2 and a primary coil of a transformer T1, wherein the primary coil of the transformer T1 generates oscillation, a secondary coil of the transformer T1 generates flame oscillation voltage Vp, a battery Vbat provides bias voltage for the triode Q1 through the resistor R2 and the resistor R1, a pin 9 of a singlechip U1 sends a PWM signal to a resistor R2, the PWM signal is a sine wave, the capacitor C4 performs filtering, an alternating current voltage is output from the secondary coil of the transformer T1, and the alternating current voltage passes through the capacitor C6 and the resistor R14 which are connected in series.
The flame detection circuit unit comprises a comparator U2, a capacitor C6, a capacitor C7, a diode D3, a resistor R7, a resistor R8, a resistor R12, a resistor R13, a resistor R14, a resistor R15 and a flame sensing needle, wherein the capacitor C6 is connected with the resistor R14 in series and then connected with a resistor R12 and a resistor R13 in parallel, the resistor R12 is connected with the resistor R8, one end of the diode D9 is grounded, the capacitor C7 is connected with the resistor R7 and the resistor R11 in parallel and then respectively connected with a voltage node VCC and a pin 6 of the comparator U2, the pin 5 of the comparator is grounded, and the pin 16 of the singlechip U1 is connected with the resistor R11 in series; a negative voltage signal generated by the flame detection circuit under the action of the excitation voltage is input from a pin 6 of the comparator U2, and the negative voltage signal input from the pin 6 is compared with a pin 5 with a set voltage value and is output after being compared with a ground signal;
the resistor R13 is connected with the flame sensing needle, one end of the flame sensing needle is connected with one end of a digital ground J3, the other end of the digital ground J3 is connected with a resistor R15 in series and then is grounded, and the circuit is conducted in a single-way mode and allows forward level to pass through.
The induction sensitivity adjusting unit comprises a resistor R9, a triode Q5 and a resistor R10, the resistor R9 is connected with the flame detection circuit unit, and the resistor R10 is connected with a pin 17 of the single chip microcomputer U1. The single chip microcomputer IO port controls the conduction and the cut-off of the triode Q5 to realize the adjustment of the bias voltage, when the battery voltage Vbat is larger than the set threshold value Vset, the sampling and the comparison are continuously maintained, the control system outputs low level, the triode Q5 is cut off, the R9 is cut off, and the normal induction sensitivity is maintained. When the battery voltage Vbat is less than or equal to the set threshold Vset, the control system outputs a high level, the transistor Q5 is turned on, and the resistors R9 and R8 are connected in parallel to the ground, so that the sensing sensitivity is increased.
Based on the control circuit, the control circuit further comprises a flame ion induction control method with adjustable sensitivity, and the control method specifically comprises the following steps:
s1, electrifying the igniter, outputting low level by the control system after receiving an ignition instruction, and starting working and timing by the oscillation voltage transformation circuit unit; after the igniter receives an ignition instruction, the control system starts to output a low level, a transformer coil of the oscillation transformation circuit unit generates oscillation in a primary coil, and a secondary coil generates flame oscillation voltage Vp;
s2, judging whether the timing period T is less than or equal to the set time T2, and further judging whether the flame induction is successful, and the method specifically comprises the following steps:
when the timing period T is less than or equal to the set time T2, the control system outputs high level, the triode Q5 is conducted, and the resistors R9 and R8 are grounded in parallel, so that the induction is judged to be successful; when the timing period T is greater than or equal to the set time T2, the control system outputs high level, the triode Q5 is turned on, the resistors R9 and R8 are connected to the ground in parallel, and the induction sensitivity is increased.
When the timing period T is greater than the programmed time T2 and within the period, the flame detection circuit unit is connected to the pin 16 of the singlechip U1, and if the level is not inverted from low level to high level, the flame sensing is judged to fail. When the timing period T is greater than the set time T2 and the level of the pin 16 of the flame detection circuit connected to the single chip microcomputer U1 is not turned from low level to high level in the period, the flame sensing fails, the control system outputs low level, the triode Q5 is cut off, and the R9 is disconnected.
If the flame induction fails, the control system outputs a high level, the oscillation voltage transformation circuit unit stops working until the singlechip U1 turns from the low level to the high level, and the flame induction succeeds; if the flame induction is successful, the control system maintains the output low level, the oscillation voltage transformation circuit unit maintains the work, the igniter maintains the fire detection state, the triode Q5 is cut off, and the R9 is disconnected. The control system outputs high level, and the oscillation voltage transformation circuit unit stops working; when the level of a pin 16 of the flame detection circuit connected to the single chip microcomputer U1 is turned from low level to high level, flame induction is successful, the control system maintains output low level, the oscillation transformation circuit unit maintains work, the igniter maintains a fire detection state, the control system outputs low level, the triode Q5 is cut off, and R9 is disconnected.
And S3, when the flame induction is successful and the igniter maintains the fire detection state, the control system detects the battery voltage Vbat, compares the current battery voltage Vbat with a set threshold value vest, and determines whether the induction sensitivity needs to be increased according to the comparison result. When the igniter is in a fire detection state, the control system samples the resistor R16 and the R17 voltage dividing circuit and detects the battery voltage Vbat.
The S3 further includes: when the battery voltage Vbat is greater than a set threshold value vest, the control system outputs a low level, the triode Q5 is cut off, the R9 is cut off, and the normal induction sensitivity is maintained; when the battery voltage Vbat is less than or equal to the set threshold value vest, the control system outputs high level, the triode Q5 is turned on, and at the moment, the resistor R9 and the resistor R8 are connected to the ground in parallel, so that the induction sensitivity is increased. The control system controls the level potential output by comparing the battery voltage Vbat with a set threshold value Vset, when the battery voltage Vbat is greater than the set threshold value Vset, the sampling and the comparison are continuously maintained, the control system outputs a low level, the triode Q5 is cut off, the R9 is disconnected, and the normal induction sensitivity is maintained. When the battery voltage Vbat is less than or equal to the set threshold Vset, the control system outputs a high level, the transistor Q5 is turned on, and the resistors R9 and R8 are connected in parallel to the ground, so that the sensing sensitivity is increased.
The flame ion sensing control circuit with adjustable sensitivity of the present invention is described above for the purpose of facilitating understanding of the present invention, but the embodiments of the present invention are not limited to the above embodiments, and any changes, modifications, substitutions, combinations, and simplifications which do not depart from the principle of the present invention shall be considered as equivalent replacements within the protection scope of the present invention.
Claims (6)
1. A flame ion induction control circuit with adjustable sensitivity is characterized by comprising a battery voltage detection circuit unit, a control unit, an oscillation voltage transformation circuit, a flame detection circuit unit and an induction sensitivity adjustment unit, wherein the battery voltage detection circuit unit, the oscillation voltage transformation circuit unit, the induction sensitivity adjustment unit and the flame detection circuit unit are electrically connected with the control unit;
the battery voltage detection circuit unit monitors the voltage state of the battery, when the voltage of the battery is lower than a set threshold value, the oscillation voltage transformation circuit unit generates an oscillation voltage VP, and the induction sensitivity adjusting unit adjusts the voltage through the control unit.
2. The adjustable sensitivity flame ion sensing control circuit of claim 1, wherein the control unit comprises a single-chip U1, and pin 10 of the single-chip U1 is grounded.
3. The flame ion induction control circuit with adjustable sensitivity of claim 2, wherein the battery voltage detection circuit comprises resistors R16 and R17 which are connected in series, and the resistors R16 and R17 divide the voltage of the battery and then connect to pin 2 of the single chip microcomputer U1.
4. The adjustable sensitivity flame ion induction control circuit of claim 2, wherein the oscillation transformation circuit unit comprises a transformer, a coil on a primary side of the transformer is connected with a battery Vbat, a resistor R1, a resistor R2, a resistor R4, a transistor Q1, a capacitor C4 and a transistor Q2, a coil on a secondary side of the transformer generates a flame agitation voltage VP and outputs an alternating current oscillation voltage to the flame detection circuit unit, and the resistor R2 is connected with a pin 9 of a single chip microcomputer U1.
5. The flame ion induction control circuit with adjustable sensitivity according to claim 4, wherein the flame detection circuit unit comprises a comparator U2, a capacitor C6, a capacitor C7, a diode D3, a resistor R7, a resistor R8, a resistor R12, a resistor R13, a resistor R14, a resistor R15 and a flame sensing needle, the capacitor C6 is connected in series with a resistor R14 and then connected in parallel with a resistor R12 and a resistor R13, the resistor R12 is connected with a resistor R8, one end of the diode D9 is grounded, the capacitor C7 is connected in parallel with the resistor R7 and the resistor R11 and then respectively connected with a voltage node VCC and a pin 6 of the comparator U2, a pin 5 of the comparator is grounded, and a pin 16 of a singlechip U1 is connected in series with the resistor R11; the resistor R13 is connected with the flame sensing needle, one end of the flame sensing needle is connected with one end of a digital ground J3, and the other end of the digital ground J3 is connected with a resistor R15 in series and then grounded.
6. The flame ion induction control circuit with adjustable sensitivity of claim 1, wherein the induction sensitivity adjusting unit comprises a resistor R9, a triode Q5 and a resistor R10, the resistor R9 is connected with the flame detection circuit unit, and the resistor R10 is connected with a pin 17 of a single chip U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122696625.4U CN216083464U (en) | 2021-11-05 | 2021-11-05 | Flame ion induction control circuit with adjustable sensitivity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122696625.4U CN216083464U (en) | 2021-11-05 | 2021-11-05 | Flame ion induction control circuit with adjustable sensitivity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216083464U true CN216083464U (en) | 2022-03-18 |
Family
ID=80659448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122696625.4U Expired - Fee Related CN216083464U (en) | 2021-11-05 | 2021-11-05 | Flame ion induction control circuit with adjustable sensitivity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216083464U (en) |
-
2021
- 2021-11-05 CN CN202122696625.4U patent/CN216083464U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2020572B1 (en) | Automatic device for the ignition and control of a gas apparatus and relative driving method | |
| US11050222B2 (en) | Concurrent method for resonant frequency detection in corona ignition systems | |
| CA2132061C (en) | Synchronization circuit for visual/audio alarms | |
| CN103597202B (en) | For control the system and method that electric arc forms at corona point ignition system | |
| CN107440157A (en) | Dry burning prevention device of electronic cigarette and dry burning prevention control method thereof | |
| CN111917398B (en) | Flame ion signal detection circuit and control method thereof | |
| CN101922396B (en) | Method for operating a multi-spark ignition system, and multi-spark ignition system | |
| CN111829017B (en) | Ion induction flameout protection device and control method thereof | |
| CN216083464U (en) | Flame ion induction control circuit with adjustable sensitivity | |
| CN113934177A (en) | Flame ion induction control circuit and method with adjustable sensitivity | |
| CN205505078U (en) | Novel ignition of gas hanging stove | |
| CN213119162U (en) | Pulse ignition compensation circuit | |
| CN105509093B (en) | A kind of low power-consumption intelligent electric-arc lighter circuit and sparking method | |
| CN111520742B (en) | Pulse ignition compensation circuit and control method thereof | |
| CN210834848U (en) | Carbon monoxide alarm protection system for generator set | |
| JPH02245478A (en) | Ignition device for internal combustion engine | |
| CN113819494A (en) | Low-power-consumption flame ion detection circuit and method with adjustable sensitivity | |
| CN106523240B (en) | TCI ignitor circuit with speed limiting function | |
| CN210511788U (en) | Thermocouple electromagnetic valve instant suction type single needle sensing gas cooker pulse ignition controller | |
| CN112032761B (en) | Flame ion signal compensation circuit and control method | |
| CN212723272U (en) | Leakage protector for christmas lamp | |
| KR102545351B1 (en) | Electric mat protection device to prevent overheating | |
| CN212909463U (en) | Flame ion signal detection circuit | |
| CN215808654U (en) | Low-power-consumption flame ion detection circuit with adjustable sensitivity | |
| US11356024B2 (en) | Ignition exciter assembly and method for charging a tank capacitor for an ignition exciter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220318 |