CN108037400A - A kind of heater warm-up mode detection method - Google Patents
A kind of heater warm-up mode detection method Download PDFInfo
- Publication number
- CN108037400A CN108037400A CN201711081491.7A CN201711081491A CN108037400A CN 108037400 A CN108037400 A CN 108037400A CN 201711081491 A CN201711081491 A CN 201711081491A CN 108037400 A CN108037400 A CN 108037400A
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- Prior art keywords
- warm
- heater
- mode
- detection method
- voltage
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
Abstract
The invention belongs to aircraft finished product heater detection technique, and in particular to a kind of heater warm-up mode detection method for flush airdata sensing system device, for monitoring whether flush airdata sensing system device heater is in warm-up mode.The heater warm-up mode detection method of the present invention, connect in heater circuit sampling resistor, by sampling resistor both end voltage after isolation amplifier is isolated, digital quantity is converted into through A/D converter built in DSP, judges whether heater is in warm-up mode by the voltage swing of collection.Principle is simple, is adapted to be promoted and applied in flush airdata sensing system device.
Description
Technical field
The invention belongs to aircraft finished product heater detection technique, and in particular to one kind is used for flush airdata sensing system device
Heater warm-up mode detection method.
Background technology
According to flush airdata sensing system device design feature, there is the pressure measurement region of three erect-positions by sense panel, be
Meet anti-icing and deicing, the waterproof requirement of each erect-position, devise A, B, three groups of heaters of C pressure measured zone, each region
Heater includes panel heater and inner cylinder heater, and panel heater keeps panel outer surface not freeze, inner cylinder heater dimension
Hold that gas circuit is unobstructed and localized hyperthermia's (more than 100 DEG C), be evaporated steam at any time, and it is heat-insulated with peripheral parts.
The content of the invention
Goal of the invention：A kind of heater warm-up mode detection method is provided, for monitoring flush airdata sensing system device
Whether heater is in warm-up mode.
Technical solution：The heater warm-up mode detection method of the present invention, sampling resistor of connecting in heater circuit will
The sampled voltage at sampling resistor both ends is converted into digital quantity through the A/D converter built in DSP, and is heated by following steps
The judgement of state：
(1), the voltage signal being converted to n times collection is averaged, and voltage is detected as heating；
(2), heating detection voltage is judged whether in defined voltage range, if it is, being heated condition, continuously not
Heated condition number is reset；If not, judge whether the continuous not warm-up mode number is more than or equal to 10 times, if greater than etc.
Then it is not heated condition in 10 times；If being not greater than being equal to 10 times, the continuous not warm-up mode number adds 1 time, judges to tie
Fruit is warm-up mode；
(3), circulation performs step (1) and (2), and heater warm-up mode is detected in real time.
The resistance value of the sampling resistor is 1 Ω.
The sampled voltage is sent to the DSP after isolation amplifier is isolated.
The dsp processor uses SM320LF2407A, built-in 10 A/D converters.
The voltage range is between 0.05V-1.2V.
Beneficial effect：This method principle is simple, is adapted to be promoted and applied in flush airdata sensing system device.
Brief description of the drawings
Fig. 1 is the circuit diagram of the present invention；
Fig. 2 is the decision logic figure of heater warm-up mode detection of the present invention.
Embodiment
The present invention is described in further details below.
With reference to figure 1.It is low that the circuit of heater warm-up mode detection method of the present invention mainly includes 1 Ω sampling resistors R1, RC
Bandpass filter R2 and C1, isolation amplifier U1, zener diode D1 and dsp processor U2.
1 Ω sampling resistors are connected in heater circuit, and the electric current of heater is converted into voltage signal.Resistance R2 and electricity
Hold C1 composition RC low-pass filters, cutoff frequency 796Hz.Isolation amplifier AD202 forms voltage follower circuit by heater
Circuit is isolated with Acquisition Circuit.The burning voltage V of zener diode BWC101ZFor 3V.Built in dsp processor SM320LF2407A
Voltage signal V_HCM after isolation is converted to digital quantity by 10 A/D converters, and processor is internally embedded formula software and passes through numeral
The size of amount judges whether heater is in warm-up mode.
The decision logic that dsp processor is internally embedded formula software warm-up mode is as follows：
A) dsp processor each clock cycle, its built-in A/D converter gathers 20 V_HCM values, every time using continuous 50
The method that a cycle, totally 1000 A/D sampled values were averaged calculates heating detection voltage；
B) judge heating detection voltage whether between 0.05V~1.2V；
C), will continuous not warm-up mode number clear 0 if so, being then set to warm-up mode；
D) if it is not, judging whether continuous not warm-up mode number is more than or equal to 10 times；
E) if so, being then set to not warm-up mode；
F) if it is not, continuous not warm-up mode number adds 1 certainly, and it is set to warm-up mode.
The principle of heater warm-up mode detection method of the present invention is simple, be adapted in flush airdata sensing system device into
Row promotes and applies, and has larger actual application value.
Claims (5)
- A kind of 1. heater warm-up mode detection method, it is characterised in that：This method is connected sampling resistor in heater circuit, The sampled voltage at sampling resistor both ends is converted into digital quantity through the A/D converter built in DSP, and is added by following steps The judgement of temperature state：(1), the voltage signal being converted to n times collection is averaged, and voltage is detected as heating；(2), judge that heating detection voltage whether in defined voltage range, if it is, being heated condition, does not heat continuously State number is reset；If not, judge whether the continuous not warm-up mode number is more than or equal to 10 times, if it is larger than or equal to 10 It is secondary, then it is not heated condition；If being not greater than being equal to 10 times, the continuous not warm-up mode number adds 1 time, and judging result is Warm-up mode；(3), circulation performs step (1) and (2), and heater warm-up mode is detected in real time.
- 2. heater warm-up mode detection method according to claim 1, it is characterised in that：The resistance value of the sampling resistor For 1 Ω.
- 3. heater warm-up mode detection method according to claim 1, it is characterised in that：The sampled voltage is through isolation Sent after amplifier isolation to the DSP.
- 4. heater warm-up mode detection method according to claim 1, it is characterised in that：The dsp processor uses SM320LF2407A, built-in 10 A/D converters.
- 5. heater warm-up mode detection method according to claim 1, it is characterised in that：The voltage range exists Between 0.05V-1.2V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711081491.7A CN108037400A (en) | 2017-11-06 | 2017-11-06 | A kind of heater warm-up mode detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711081491.7A CN108037400A (en) | 2017-11-06 | 2017-11-06 | A kind of heater warm-up mode detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108037400A true CN108037400A (en) | 2018-05-15 |
Family
ID=62093785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711081491.7A Pending CN108037400A (en) | 2017-11-06 | 2017-11-06 | A kind of heater warm-up mode detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108037400A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103226367A (en) * | 2013-05-10 | 2013-07-31 | 中航通飞研究院有限公司 | Airspeed head heating system |
| CN106155134A (en) * | 2016-08-09 | 2016-11-23 | 宁波大学 | A kind of enrichment pipe temp. control method and attemperating unit |
-
2017
- 2017-11-06 CN CN201711081491.7A patent/CN108037400A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103226367A (en) * | 2013-05-10 | 2013-07-31 | 中航通飞研究院有限公司 | Airspeed head heating system |
| CN106155134A (en) * | 2016-08-09 | 2016-11-23 | 宁波大学 | A kind of enrichment pipe temp. control method and attemperating unit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180515 |