A liquid rocket engine timing signal detection system and method
A signal detection and liquid rocket technology, which is applied in the direction of engine testing, control/regulation system, machine/structural component testing, etc., can solve the problem of timing signal detection false detection, timing signal cannot be safely and effectively isolated and received, etc. problem, to achieve the effect of avoiding false triggering, avoiding influence, and avoiding signal crosstalk
Active Publication Date: 2020-12-18
XIAN AEROSPACE PROPULSION INST
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] However, the existing liquid rocket engine time system signal detection system and method cannot safely and effectively isolate and receive the time system signal, and there is a situation of false detection in the detection of the time system signal
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0055] The present invention will be described in detail below in conjunction with the accompanying drawings.
[0056] A time system signal detection system for a liquid rocket engine, including a hardware part and a software part, which will be described separately below.
[0057] Hardware part: The timing signal is received by the hardware isolation receiving circuit, which is composed of a photocoupler, combined with an isolated front-end interface circuit and a back-end interface circuit, to ensure signal isolation, real-time, and safe reception. Among them, the isolated front-end interface circuit is designed in two ways to adapt to the forms of different timing signals, and the signal transmission delay is us level, which meets the control requirements of the engine test bench. See the two timing isolation receiving circuits Figure 1-2 shown.
[0058] Such as figure 1 As shown, the timing level signal receiving circuit includes a first isolated front-end interface ci...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a time synchronization signal detection system and method for a liquid rocket engine, thereby ensuring real-time, reliable, and safe performances of flow regulation of the liquid rocket engine hot test process and realizing the real-time, safe and effective detection of the time synchronization signal. The detection system comprises a hardware isolation receiving circuit and a processor. The hardware isolation receiving circuit is a time synchronization level signal receiving circuit or a time synchronization contact signal receiving circuit; the time synchronization level signal receiving circuit is used for receiving a level signal sent by a test console; and the time synchronization contact signal receiving circuit is used for receiving a contact signal sent bythe test console. The processor employs a finite state machine to realize the detection process and the software carries out interference filtering on the signal by multi-times detection within multiple continuous periods, so that the misoperation is avoided and the start and stop process of the time synchronization signal can be received and detected effectively.
Description
technical field [0001] The invention relates to a liquid rocket engine timing signal detection system and method. Background technique [0002] During the development of the liquid rocket engine, it is necessary to carry out system-level test run verification to confirm the ignition timing, system performance, work matching of each assembly, thrust and mixing ratio adjustment control accuracy, and assessment of engine boundary conditions. Since the engine flow regulation control system, the test bench control system and the measurement system are separated and work independently, each system needs to work strictly synchronously. At present, the main way for the flow regulation control system to start work in the thermal test run of liquid rocket engines is that the control system of the engine test bench sends a synchronous reference signal (real-time synchronization signal), and the flow regulation control system receives and detects when the system works at "0". When it i...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01M15/02G05D7/00G06F30/23
CPCG01M15/02G05D7/00G06F30/23
Inventor 于洋魏京芳董国创徐中节
Owner XIAN AEROSPACE PROPULSION INST