CN115469647A - BIT detection circuit and fault detection method for electric heating controller - Google Patents
BIT detection circuit and fault detection method for electric heating controller Download PDFInfo
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- CN115469647A CN115469647A CN202211212887.1A CN202211212887A CN115469647A CN 115469647 A CN115469647 A CN 115469647A CN 202211212887 A CN202211212887 A CN 202211212887A CN 115469647 A CN115469647 A CN 115469647A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
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Abstract
The application discloses electric heating controller BIT detection circuit and fault detection method. The method comprises the following steps: the first voltage detection unit is arranged at the signal input end of the electric heating controller and is configured for detecting the upstream electric signal state before entering the electric heating controller; the second voltage detection unit is arranged at the signal output end of the electric heating controller and is configured for detecting the state of the electric signal output by the electric heating controller; a current detection unit disposed in a warming circuit of the electric warming controller and configured to detect a current state in the warming circuit; and the processing unit is in communication connection with the first voltage detection unit, the current detection unit and the second voltage detection unit, is configured to receive the corresponding electric signal state and/or current state according to the current heating state of the electric heating controller, judges whether the electric heating controller fails or not, and outputs a failure detection result if the electric heating controller fails. The system fault can be detected, the fault position can be quickly positioned, and the labor cost is saved.
Description
Technical Field
The disclosure generally relates to the technical field of aviation electrical, in particular to a BIT detection circuit and a fault detection method for an electric heating controller.
Background
The electric heating system is a relatively common anti-icing and demisting system on an airplane, such as a wing electric anti-icing system, a wing anti-icing control system and the like, and generally comprises an electric heating controller and a heating load, wherein the electric heating controller is used for connecting an upstream power supply signal and acquiring real-time environment data, determining whether to switch on a heating load loop or not, and the heating load is used for generating heat and playing the roles of anti-icing and demisting.
The electric heating controller is in comparatively core effect in the electric heating system, because the inside electrical characteristics of this type of product is comparatively complicated, so its fault rate is higher than other types of controllers, the corresponding potential harm to the flight task will increase, so set up BIT detection circuitry and be used for detecting system operating condition in the electric heating controller, need the manual work to carry out troubleshooting, because the circuit is complicated on the machine, operating space is limited, lead to the maintainability of electric heating system relatively poor, how to carry out electric heating system fault location fast, improve system maintainability, be the problem that the electric heating system of present stage is urgent to solve.
Disclosure of Invention
In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a BIT detection circuit and a fault detection method for an electric heating controller, which save manual operation, save troubleshooting time, and improve maintainability of the system.
In a first aspect, the present application provides an electric heating controller BIT detection circuit, which is applied to an electric heating controller, the electric heating controller BIT detection circuit includes:
the first voltage detection unit is arranged at the signal input end of the electric heating controller and is configured for detecting the upstream electric signal state before entering the electric heating controller;
the second voltage detection unit is arranged at the signal output end of the electric heating controller and is configured for detecting the state of the electric signal output by the electric heating controller;
a current detection unit disposed in a warming loop of the electric warming controller, configured to detect a current state in the warming loop;
and the processing unit is in communication connection with the first voltage detection unit, the current detection unit and the second voltage detection unit, is configured to receive a corresponding electric signal state and/or current state according to the current heating state of the electric heating controller, judges whether the electric heating controller fails or not, and outputs a corresponding fault detection result if the electric heating controller fails.
According to the technical scheme provided by the embodiment of the application, when the current warming state of the electric warming controller is the normal warming state,
the processing unit is configured to receive an upstream electric signal state before entering the electric heating controller, a current state in the heating loop and an electric signal state output by the electric heating controller, judge whether the electric heating controller fails according to the received three states, and output a corresponding fault detection result if the electric heating controller fails.
According to the technical scheme provided by the embodiment of the application, the fault detection result comprises the following steps: power supply anomalies, electrical heating controller anomalies, heating element short circuits, and heating element open circuits.
According to the technical scheme provided by the embodiment of the application, when the current warming state of the electric warming controller is a warming closing state,
and the processing unit is configured to receive the current state in the heating loop, judge whether the electric heating controller fails according to the current state, and output a corresponding failure detection result if the electric heating controller fails.
According to the technical scheme provided by the embodiment of the application, the fault detection result is that the electric heating controller is abnormal.
In a second aspect, the present application provides a fault detection method based on the BIT detection circuit of the electric heating controller, including the following steps:
detecting an upstream electrical signal state prior to entering the electrical heating controller;
detecting the state of the electric signal output by the electric heating controller;
detecting a current condition in the warming loop;
and receiving the corresponding electric signal state and/or current state according to the current heating state of the electric heating controller, judging whether the electric heating controller fails, and outputting a corresponding fault detection result if the electric heating controller fails.
According to the technical scheme provided by the embodiment of the application, the current warming state of the electric warming controller comprises the following steps: a normal warm-up state and a warm-up off state.
According to the technical scheme provided by the embodiment of the application, when the current warming state of the electric warming controller is the normal warming state,
and receiving an upstream electric signal state before entering the electric heating controller, a current state in a heating loop and an electric signal state output by the electric heating controller, judging whether the electric heating controller fails according to the received three states, and outputting a corresponding fault detection result if the electric heating controller fails.
According to the technical scheme provided by the embodiment of the application, when the current warming state of the electric warming controller is a warming closing state,
and the processing unit is configured to receive the current state in the heating loop, judge whether the electric heating controller fails according to the current state, and output a corresponding failure detection result if the electric heating controller fails.
To sum up, the present application specifically discloses a specific flow of electric heating controller BIT detection circuit. The signal input end of the electric heating controller is provided with a first voltage detection unit, the signal output end of the electric heating controller is provided with a second voltage detection unit, the heating loop of the electric heating controller is provided with a current detection unit, and the processing unit is in communication connection with the first voltage detection unit, the second voltage detection unit and the current detection unit; the first voltage detection unit detects the upstream electric signal state before entering the electric heating controller, the second voltage detection unit detects the electric signal state output by the electric heating controller, the current detection unit detects the current state in the heating loop, the processing unit receives the corresponding electric signal state and/or current state according to the current heating state of the electric heating controller, judges whether the electric heating controller breaks down or not, and if the electric heating controller breaks down, outputs the corresponding fault detection result.
Through the detection, system faults can be detected, the positions of the faults in the system can be quickly positioned, time and energy of manual fault positioning are saved, maintainability of the heating system is improved, and the heating system has good use value.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of a BIT detection circuit of an electric heating controller.
FIG. 2 is a schematic diagram of an electric heating controller BIT detection circuit applied to an anti-icing system of a wing.
FIG. 3 is a schematic flow diagram of a fault determination in an anti-icing controller for a wing.
Reference numbers in the figures: 1. an electric heating controller; 2. a first voltage detection unit; 3. a current detection unit; 4. a second voltage detection unit; 5. and a processing unit.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Example 1
Referring to fig. 1, a schematic diagram of a first embodiment of a BIT detection circuit of an electric heating controller according to the present application is shown, in which the BIT detection circuit is applied to the electric heating controller, and includes:
a first voltage detection unit 2, wherein the first voltage detection unit 2 is arranged at the signal input end of the electric heating controller 1 and is configured to detect the upstream electric signal state before entering the electric heating controller 1;
here, the first voltage detection unit 2 may be an optical coupler PS2801-4.
The second voltage detection unit 4 is arranged at the signal output end of the electric heating controller 1, and is configured to detect the state of the electric signal output by the electric heating controller 1;
here, the second voltage detection unit 4 may be a photo coupler PS2801-4.
A current detection unit 3, the current detection unit 3 being provided in a warming circuit of the electric warming controller 1, and configured to detect a current state in the warming circuit;
here, the current detection unit 3 may be a hall sensor LTSR-6 NP.
And the processing unit 5 is in communication connection with the first voltage detection unit 2, the current detection unit 3 and the second voltage detection unit 4, and is configured to receive a corresponding electric signal state and/or current state according to the current heating state of the electric heating controller 1, judge whether the electric heating controller 1 fails, and output a corresponding failure detection result if the electric heating controller 1 fails.
Here, the processing unit 5 may be a CPU. Moreover, the external communication mode of the electric heating controller can be selected from HB6096 communication.
Further, the current warming state of the electric warming controller 1 includes: normal warm-up state and warm-up off state:
when the current heating state of the electric heating controller 1 is the normal heating state,
the processing unit 5 is configured to receive an upstream electrical signal state before entering the electric heating controller 1, a current state in a heating loop, and an electrical signal state output by the electric heating controller 1, determine whether the electric heating controller 1 fails according to the received three states, and output a corresponding failure detection result if the electric heating controller 1 fails.
Wherein, the fault detection result includes: power supply abnormality, abnormality of the electric heating controller 1, short circuit of the heating element, and disconnection of the heating element.
When the current warming state of the electric warming controller 1 is a warming-off state,
and the processing unit 5 is configured to receive a current state in the heating circuit, judge whether the electric heating controller 1 fails according to the current state, and output a corresponding failure detection result if the electric heating controller fails.
Wherein, the fault detection result is that the electric heating controller 1 is abnormal.
Specifically, when the current warming state of the electric warming controller 1 is the normal warming state,
a. the first voltage detection unit 2 detects the state of an upstream electric signal before entering the electric heating controller 1; if the voltage of the upstream electric signal is detected to be smaller than the lower limit amplitude, the processing unit 5 judges that the electric heating controller has a fault, and the fault is that the upstream power supply signal is missing, namely, the power supply is abnormal.
b. When the first voltage detection unit 2 detects the upstream electric signal state before entering the electric heating controller 1; when the voltage of the upstream electric signal is detected to be larger than or equal to the lower limit amplitude, the upstream electric signal is not abnormal, and the state of the electric signal output by the electric heating controller 1 is detected by using a second voltage detection unit 4; if the voltage of the output electric signal is detected to be smaller than the lower limit amplitude, the processing unit 5 judges that the electric heating controller has a fault, and the fault is that the heating channel in the electric heating controller 1 is broken, namely the electric heating controller 1 is abnormal.
c. When the first voltage detection unit 2 detects that the state of the upstream electric signal before entering the electric heating controller 1 is abnormal and the second voltage detection unit 4 detects that the state of the electric signal output by the electric heating controller 1 is abnormal, the current detection unit 3 is used for detecting the current state in the heating loop, if the detected current signal is larger than the normal current range, the processing unit 5 judges that the electric heating controller has a fault, and the fault at the moment is a heating load short circuit, namely a heating element short circuit.
d. When the first voltage detection unit 2 detects that the upstream electric signal state before entering the electric heating controller 1 is abnormal and the second voltage detection unit 4 detects that the electric signal state output by the electric heating controller 1 is abnormal, the current detection unit 3 is used for detecting the current state in the heating loop, if the detected current signal is smaller than the normal current range, the processing unit 5 judges that the electric heating controller has a fault, and the fault is a heating load open circuit, namely the heating element is open circuit.
2. When the current heating state of the electric heating controller 1 is a heating off state,
the current detection unit 3 detects the current state in the heating loop, and if the current signal is not 0, the processing unit 5 judges that the electric heating controller has a fault, and the fault is that the electric heating controller 1 is abnormally switched on, namely the electric heating controller 1 is abnormal.
The upstream electric signal state before entering the electric heating controller 1 is detected by the first voltage detection unit 2, the second voltage detection unit 4 detects the electric signal state output by the electric heating controller 1, the current detection unit 3 detects the current state in the heating loop, the corresponding electric signal state and/or current state is received according to the current heating state of the electric heating controller, whether the electric heating controller breaks down or not is judged, if the electric heating controller breaks down, the corresponding fault detection result is output, the system fault can be detected, the position of the fault in the system can be quickly positioned, the time and the energy for manual fault positioning are saved, the maintainability of the heating system is improved, and the electric heating system has a good use value.
Example 2
A method for detecting a fault of a BIT detection circuit of an electric heating controller according to embodiment 1, comprising the steps of:
detecting the state of an upstream electric signal before entering the electric heating controller 1;
detecting the state of an electric signal output by the electric heating controller 1;
detecting a current condition in the warming loop;
and receiving a corresponding electric signal state and/or current state according to the current heating state of the electric heating controller 1, judging whether the electric heating controller 1 fails, and outputting a corresponding fault detection result if the electric heating controller 1 fails.
Further, the current warming state of the electric warming controller 1 includes: a normal warm-up state and a warm-up off state.
When the current heating state of the electric heating controller 1 is the normal heating state,
receiving the upstream electric signal state before entering the electric heating controller 1, the current state in the heating loop and the electric signal state output by the electric heating controller 1, judging whether the electric heating controller 1 has a fault according to the received three states, and if the electric heating controller 1 has the fault, outputting a corresponding fault detection result.
When the current heating state of the electric heating controller 1 is a heating off state,
and the processing unit 5 is configured to receive a current state in the warming loop, judge whether the electric warming controller 1 fails according to the current state, and output a corresponding failure detection result if the electric warming controller 1 fails.
Taking the wing anti-icing system as an example, the electric heating controller is applied to the wing anti-icing system, as shown in fig. 2, the power supply form of the wing anti-icing system is three-phase 115V, the load form is three-phase star, the normal line resistance range of each phase load is 147 Ω -184 Ω, and the normal line current range of each phase is calculated to be 0.6A-0.8A.
Accordingly, the first voltage detecting unit 2, the second voltage detecting unit 4, and the current detecting unit 3 are provided for each phase in the electric warming controller, and as shown in fig. 2, the first voltage detecting unit 2 is defined as a first voltage detecting unit V1, the second voltage detecting unit 4 is defined as a second voltage detecting unit V2, and the current detecting unit 3 is defined as a current detecting unit a.
The first voltage detection unit V1 and the second voltage detection unit V2 both use the optical coupler PS2801-4 to perform discrete magnitude detection on voltage signals, when the voltage of the detection position is normal, the acquisition result of the optical coupler is '1', otherwise, the acquisition result of the optical coupler is '0'; the current detection unit A adopts a Hall sensor LTSR-6 NP to collect a heating current analog quantity signal, when a certain phase collects a current range of 0.5-0.9A, the phase heating loop is considered to be normal, when the current range is less than 0.5A, the phase heating loop is considered to be open circuit, and when the current range is more than 0.9A, the phase heating loop is considered to be short circuit.
In particular, as shown in figure 3,
1. when the current heating state of the electric heating controller 1 is the normal heating state,
a. if the V1 acquisition result is '0', the phase power supply input fault is indicated, and the electric heating controller reports a fault detection result of 'power supply abnormity' through an HB6096 circuit.
b. And if the V1 acquisition result is '1', the V2 acquisition result is '0', the phase power supply channel in the electric heating controller is disconnected, and the electric heating controller reports a fault detection result of 'abnormality of the electric heating controller' through an HB6096 circuit.
c. If the V1 acquisition result is 1, the V2 acquisition result is 1, the A acquisition result is more than 0.9A, the heating load is short-circuited at the moment, and the electric heating controller passes through a fault detection result of HB6096 circuit heating element short-circuit.
d. If the V1 acquisition result is 1, the V2 acquisition result is 1, the A acquisition result is more than 0.9A, the heating load is broken at the moment, and the electric heating controller passes the fault detection result of HB6096 circuit heating element broken circuit.
2. When the current warming state of the electric warming controller 1 is a warming-off state,
if the acquisition result A is not 0, the electric heating controller is abnormally switched on at the moment, and the electric heating controller reports the fault detection result of 'the electric heating controller is abnormal' through an HB6096 circuit.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (9)
1. The utility model provides an electric heating controller BIT detection circuitry, is applied to electric heating controller, its characterized in that, electric heating controller BIT detection circuitry includes:
the first voltage detection unit (2), the first voltage detection unit (2) is arranged at the signal input end of the electric heating controller (1) and is configured to detect the upstream electric signal state before entering the electric heating controller (1);
the second voltage detection unit (4) is arranged at the signal output end of the electric heating controller (1), and is configured to detect the state of an electric signal output by the electric heating controller (1);
a current detection unit (3), wherein the current detection unit (3) is arranged in a warming loop of the electric warming controller (1) and is configured to detect the current state in the warming loop;
and the processing unit (5) is in communication connection with the first voltage detection unit (2), the current detection unit (3) and the second voltage detection unit (4), and is configured to receive a corresponding electric signal state and/or a corresponding current state according to the current heating state of the electric heating controller (1), judge whether the electric heating controller (1) has a fault, and output a corresponding fault detection result if the electric heating controller (1) has the fault.
2. The BIT detection circuit of the electric heating controller as claimed in claim 1, wherein when the current heating state of the electric heating controller (1) is a normal heating state,
the processing unit (5) is configured to receive an upstream electric signal state before entering the electric heating controller (1), a current state in a heating loop and an electric signal state output by the electric heating controller (1), judge whether the electric heating controller (1) fails according to the received three states, and output a corresponding failure detection result if the electric heating controller (1) fails.
3. The BIT detection circuit of the electric heating controller as claimed in claim 2, wherein the fault detection result comprises: power supply abnormality, abnormality of the electric heating controller (1), short circuit of the heating element, and disconnection of the heating element.
4. The BIT detection circuit of the electric heating controller as claimed in claim 1, wherein when the current heating state of the electric heating controller (1) is a heating off state,
and the processing unit (5) is configured to receive the current state in the heating loop, judge whether the electric heating controller (1) has a fault according to the current state, and output a corresponding fault detection result if the electric heating controller has the fault.
5. The BIT detection circuit of claim 4, wherein the fault detection result is an abnormality of the electric heating controller (1).
6. A fault detection method of a BIT detection circuit of an electric heating controller based on any one of claims 1 to 5, characterized by comprising the following steps:
detecting the state of an upstream electric signal before entering the electric heating controller (1);
detecting the state of an electric signal output by the electric heating controller (1);
detecting a current condition in the warming loop;
receiving a corresponding electric signal state and/or current state according to the current heating state of the electric heating controller (1), judging whether the electric heating controller (1) breaks down, and outputting a corresponding fault detection result if the electric heating controller (1) breaks down.
7. The method for detecting the fault of the BIT detection circuit of the electric heating controller as claimed in claim 6, wherein the current heating state of the electric heating controller (1) comprises the following steps: a normal warm-up state and a warm-up off state.
8. The BIT detection circuit fault detection method of an electric heating controller according to claim 7, wherein when the current heating state of the electric heating controller (1) is a normal heating state,
receiving an upstream electric signal state before entering the electric heating controller (1), a current state in a heating loop and an electric signal state output by the electric heating controller (1), judging whether the electric heating controller (1) breaks down or not according to the received three states, and if so, outputting a corresponding fault detection result.
9. The BIT detection circuit fault detection method of an electric heating controller according to claim 7, wherein when the current heating state of the electric heating controller (1) is a heating off state,
and the processing unit (5) is configured to receive the current state in the heating loop, judge whether the electric heating controller (1) has a fault according to the current state, and output a corresponding fault detection result if the electric heating controller has the fault.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211212887.1A CN115469647A (en) | 2022-09-30 | 2022-09-30 | BIT detection circuit and fault detection method for electric heating controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211212887.1A CN115469647A (en) | 2022-09-30 | 2022-09-30 | BIT detection circuit and fault detection method for electric heating controller |
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| CN115469647A true CN115469647A (en) | 2022-12-13 |
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| CN202211212887.1A Pending CN115469647A (en) | 2022-09-30 | 2022-09-30 | BIT detection circuit and fault detection method for electric heating controller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115930360A (en) * | 2022-12-07 | 2023-04-07 | 珠海格力电器股份有限公司 | Electric heater fault detection method and device and air conditioning equipment |
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2022
- 2022-09-30 CN CN202211212887.1A patent/CN115469647A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115930360A (en) * | 2022-12-07 | 2023-04-07 | 珠海格力电器股份有限公司 | Electric heater fault detection method and device and air conditioning equipment |
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