CN112595518B - Running state monitoring and scram system of distributed supersonic air flow generating device - Google Patents
Running state monitoring and scram system of distributed supersonic air flow generating device Download PDFInfo
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- CN112595518B CN112595518B CN202011400050.0A CN202011400050A CN112595518B CN 112595518 B CN112595518 B CN 112595518B CN 202011400050 A CN202011400050 A CN 202011400050A CN 112595518 B CN112595518 B CN 112595518B
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- G01M15/00—Testing of engines
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Abstract
The invention provides a running state monitoring and scram system of a distributed supersonic air flow generating device. The system comprises: measuring an upper computer, a lower computer cluster, a communication network and a control host; the upper measurement computer is used for setting and issuing a criterion table, summarizing running state data fed back by the lower measurement computer cluster, analyzing and judging, and then making a command of whether to send out an 'scram' operation to the control host; each measuring lower computer device is used for sampling corresponding sensor data, judging and confirming according to the criterion table obtained from the measuring upper computer, and transmitting running state data to the measuring upper computer in real time; and the control host is used for executing the emergency stop instruction sent by the upper measurement computer and implementing an emergency stop program. The invention realizes the efficient and reliable real-time monitoring and the scram control of the running state of the supersonic air flow generating device based on the measuring upper computer and the distributed measuring lower computer cluster.
Description
Technical Field
The invention belongs to the technical field of ramjet engine tests, and particularly relates to a supersonic air flow generating device running state monitoring and scram system.
Background
The supersonic air flow generating device continuously heats the continuous supersonic air flow through liquid oxygen and alcohol combustion to generate continuous supersonic high-temperature air flow, and a supersonic high-temperature air flow simulation environment is provided for ramjet engine tests. The supersonic air flow generating device has the risks of leakage of three high-pressure component pipeline media (liquid oxygen, alcohol and air), damage of the device and the like in an operating state, and can not respond and confirm in time and scram the device in the early stage of the occurrence of the risk of the supersonic air flow generating device through human visual observation.
At present, a fault diagnosis system aiming at the supersonic air flow generating device adopts a host/client mode, and an original program needs to be changed every time, so that the change amount is large and errors are easy to occur; in addition, in actual operation, an alarm is given out due to low risk, so that frequent scram is caused, and the operation efficiency of the monitoring system is low.
Disclosure of Invention
The purpose of the invention is that: the supersonic air flow generating device operation monitoring system solves the problem of operation monitoring of a supersonic air flow generating device in the prior art, and provides a real-time monitoring and scram system capable of efficiently and reliably monitoring the operation state of the supersonic air flow generating device, so that the supersonic air flow generating device is rapidly scram controlled at the beginning of risk occurrence.
In order to achieve the above object, the present invention proposes the following scheme:
the running state monitoring and scram system of the distributed supersonic air flow generating device is characterized by comprising the following components:
the upper measuring computer is used for setting and issuing a criterion table, summarizing running state data fed back by the lower measuring computer cluster, analyzing and judging, and then making a command of whether to send an 'scram' operation to the control host; the characterization parameters listed in the criterion table cover parts capable of timely and accurately reflecting the running state of the supersonic air flow generating device;
the measuring lower computer cluster consists of a plurality of distributed measuring lower computer devices which are in communication connection with the measuring upper computer, and each measuring lower computer device is provided with one or a plurality of sensor units; each sensor unit is respectively deployed aiming at the position capable of timely and accurately reflecting the running state of the supersonic air flow generating device; the measuring lower computer equipment is used for sampling corresponding sensor data, judging and confirming according to the criterion table acquired from the measuring upper computer, converting the sensor data into operation state data corresponding to the characterization parameters, and transmitting the operation state data to the measuring upper computer in real time;
the communication network is used for supporting information transmission between the upper measuring computer and the lower measuring computer cluster and between the upper measuring computer and the control host;
and the control host is used for executing an emergency stop instruction sent by the upper measurement computer, implementing an emergency stop program, and completing the opening and closing operation of a pipeline related to the supersonic air flow generating device by outputting an electric signal to the valve of the corresponding component of the supersonic air flow generating device.
Based on the scheme, the invention further optimizes the following steps:
optionally, the communication network is a ring fiber ethernet network.
Further alternatively, the communication network is composed of a front end network switch, a rear end network switch and an optical fiber line, wherein the front end network switch is used for front end data network interactive transmission, is arranged in an area where the measurement lower computer cluster and the control host are located, the rear end network switch is used for rear end data network interactive transmission, is arranged in an area where the measurement upper computer is located, and the optical fiber line is used for connecting data links of the front end network switch and the rear end network switch.
Optionally, the measurement lower computer device is further configured with an early warning condition based on the criterion table; when the early warning condition is met, the corresponding measurement lower computer equipment sends an early warning signal to the measurement upper computer; and the measurement upper computer determines whether to send an 'scram' operation instruction to the control host according to whether the number of the summarized early warning signals reaches a set threshold value.
Further alternatively, the corresponding measurement lower computer device transmits real-time operation state data to the measurement upper computer only when the pre-warning condition is satisfied.
Optionally, the characterization parameters include ignition current signal, pre-injection pressure, inlet temperature, and air flow.
Further alternatively, the sensor unit is divided into a pressure sensor, a temperature sensor, and a flow sensor. The ignition current signal can be obtained through a power supply circuit, so that an additional sensor is not required to be configured.
Optionally, the criterion content of the criterion table includes a measurement lower computer number, a period of time for which the criterion is effective, and an upper limit value and a lower limit value of a safety range of the corresponding characterization parameter.
The beneficial effects of the invention are as follows:
the invention realizes the efficient and reliable real-time monitoring and the scram control of the running state of the supersonic air flow generating device based on the measuring upper computer and the distributed measuring lower computer cluster. Setting and issuing monitoring criteria by the upper measurement computer, downloading the monitoring criteria by the lower measurement computer cluster, judging and confirming the sampled measurement parameter data according to the monitoring criteria, transmitting the state data to the upper measurement computer in real time, and collecting the state information and calculating whether the emergency stop operation needs to be executed by the upper measurement computer; if the 'emergency stop' operation is required to be executed, an execution instruction is sent to the control host computer, and the emergency stop program is entered.
The invention only needs to set and release the rule table on the upper computer, and the modification workload is small; the measuring lower computer is responsible for monitoring the state condition of the parameter, and sends parameter early warning to the measuring upper computer only when the early warning condition is met, so that the operating load of the measuring upper computer is reduced, the network resource occupancy rate is low, and the operating efficiency of the distributed monitoring system is higher.
The invention is applied to the development process of the supersonic air flow generating device, reduces the damage times of the supersonic air flow generating device caused by various risks, improves the repeated utilization rate of the device, saves the development cost and shortens the development period.
Drawings
FIG. 1 is a functional block diagram of a distributed supersonic airflow generation device operational status monitoring and scram system in accordance with one embodiment of the invention.
Detailed Description
The invention is further described in the following examples in conjunction with the accompanying drawings.
As shown in fig. 1, the running state monitoring and emergency stopping system of the distributed supersonic airflow generating device of the present embodiment includes a measurement host computer, a front-end network switch, a back-end network switch, a measurement host computer cluster and a control host.
The upper measuring computer sets the monitoring criteria (criteria table) and issues the monitoring criteria through the ring optical fiber Ethernet. The measuring lower computer cluster downloads and receives a monitoring criterion through the annular optical fiber Ethernet, after the supersonic airflow generating device is started, the measuring lower computer cluster converts sensor measuring point signals of corresponding key components of the device into electric signal data in real time, monitors the measuring data in real time according to the monitoring criterion, and transmits state data to the measuring upper computer in real time after the parameters meet the early warning condition. And the upper computer is measured to collect early warning signals and judge whether the 'scram' operation is required to be executed. If the 'scram' operation is required to be executed, a 'scram' instruction is sent to the control host computer, and an emergency stop program is entered. Specifically:
the upper measuring computer is used for setting and issuing a criterion table, summarizing running state data fed back by the lower measuring computer cluster, analyzing and judging, and then making a command of whether to send an 'scram' operation to the control host; the characterization parameters listed in the criterion table cover parts capable of timely and accurately reflecting the running state of the supersonic air flow generating device; characterization parameters included igniter firing signal (firing current signal), pre-injection pressure, inlet temperature, and air flow; the criterion content of the criterion table comprises a measuring lower computer number, a criterion effective period, and a safety range upper limit value and a safety range lower limit value of the corresponding characterization parameters, wherein the safety range upper limit value and the safety range lower limit value are formulated for a stage after the running state of the supersonic air flow generating device is stable.
The measuring lower computer cluster consists of a plurality of distributed measuring lower computer devices which are in communication connection with the measuring upper computer, and each measuring lower computer device is provided with one or a plurality of sensor units; each sensor unit is respectively arranged aiming at the position capable of timely and accurately reflecting the running state of the supersonic air flow generating device, and relates to a pressure sensor, a temperature sensor, a flow sensor and the like. The measuring lower computer equipment samples corresponding sensor data, performs discrimination and confirmation according to the criterion table acquired from the measuring upper computer, converts the sensor data into running state data corresponding to the characterization parameters, and transmits the running state data to the measuring upper computer in real time.
The measurement lower computer device can also preset early warning conditions based on a criterion table, for example, if M continuous sampling measured values (running state data of the characterization parameters) are all beyond the upper limit value/the lower limit value of the safety range, the corresponding measurement lower computer device immediately sends early warning signals of the related characterization parameters to the measurement upper computer; the measurement upper computer can determine whether to send an 'scram' operation instruction to the control host according to whether the total number of the early warning signals sent by the summarized measurement lower computer clusters reaches a set threshold value.
For the mode that the measurement lower computer equipment is preset with the early warning condition, when the early warning condition is not met, the real-time running state data do not need to be transmitted to the measurement upper computer. Even if the early warning condition is met, the real-time running state data is not required to be transmitted to the upper measurement computer, and only the early warning signal of the related characterization parameter is required to be sent; correspondingly, the measurement upper computer directly determines whether to send an 'scram' operation instruction to the control host according to whether the total number of the early warning signals sent by the summarized measurement lower computer clusters reaches a set threshold value. Therefore, the operation load of the upper computer is further reduced, and the operation efficiency of the distributed monitoring system is higher.
The communication network is used for supporting information transmission between the upper measuring computer and the lower measuring computer cluster and between the upper measuring computer and the control host; the communication network is composed of a front-end network switch, a rear-end network switch and an optical fiber line, wherein the front-end network switch is used for front-end data network interactive transmission, is arranged in an area where a lower computer cluster and a control host are located, the rear-end network switch is used for rear-end data network interactive transmission, is arranged in an area where an upper computer is located, and the optical fiber line is used for connecting data links of the front-end network switch and the rear-end network switch.
The control host is used for executing the 'scram' instruction sent by the measuring upper computer, implementing an emergency stop program, and completing the on-off operation of the relevant pipelines of the supersonic air flow generating device by outputting an electric signal to the valves of the corresponding components of the supersonic air flow generating device so as to realize the operation control of the device. The predetermined emergency stop procedure describes the action of the supersonic air flow generating device to open and close the associated valve operation in the emergency stop operation.
In the embodiment, only the rule table is required to be set and issued on the upper measurement computer, so that the modification workload is small; the measuring lower computer is responsible for monitoring the state condition of the parameter, and sends parameter early warning to the measuring upper computer only when the early warning condition is met, so that the operating load of the measuring upper computer is reduced, the network resource occupancy rate is low, and the operating efficiency of the distributed monitoring system is higher.
Claims (6)
1. A distributed supersonic airflow generation device operational status monitoring and scram system, comprising:
the upper measuring computer is used for setting and issuing a criterion table, summarizing running state data fed back by the lower measuring computer cluster, analyzing and judging, and then making a command of whether to send an 'scram' operation to the control host; the characterization parameters listed in the criterion table cover parts capable of timely and accurately reflecting the running state of the supersonic air flow generating device;
the measuring lower computer cluster consists of a plurality of distributed measuring lower computer devices which are in communication connection with the measuring upper computer, and each measuring lower computer device is provided with one or a plurality of sensor units; each sensor unit is respectively deployed aiming at the position capable of timely and accurately reflecting the running state of the supersonic air flow generating device; the measuring lower computer equipment is used for sampling corresponding sensor data, judging and confirming according to the criterion table acquired from the measuring upper computer, converting the sensor data into operation state data corresponding to the characterization parameters, and transmitting the operation state data to the measuring upper computer in real time;
the measurement lower computer equipment is also provided with an early warning condition based on the criterion table; when the early warning condition is met, the corresponding measurement lower computer equipment sends an early warning signal to the measurement upper computer; the measurement upper computer determines whether to send an 'scram' operation instruction to the control host according to whether the number of the summarized early warning signals reaches a set threshold value;
the communication network is used for supporting information transmission between the upper measuring computer and the lower measuring computer cluster and between the upper measuring computer and the control host; the communication network is a ring optical fiber Ethernet network;
and the control host is used for executing an emergency stop instruction sent by the upper measurement computer, implementing an emergency stop program, and completing the opening and closing operation of a pipeline related to the supersonic air flow generating device by outputting an electric signal to the valve of the corresponding component of the supersonic air flow generating device.
2. The system for monitoring and stopping the operation state of the distributed supersonic airflow generating device according to claim 1, wherein the communication network comprises a front-end network switch, a rear-end network switch and an optical fiber line, the front-end network switch is used for the interactive transmission of a front-end data network, and is arranged in an area where a measurement lower computer cluster and a control host are located, the rear-end network switch is used for the interactive transmission of a rear-end data network, and is arranged in an area where a measurement upper computer is located, and the optical fiber line is used for the data link connection of the front-end network switch and the rear-end network switch.
3. The system for monitoring and scram of operation status of a distributed supersonic airflow generating device according to claim 2, wherein the corresponding measurement host computer device transmits real-time operation status data to the measurement host computer only when the pre-warning condition is satisfied.
4. A distributed supersonic airflow generating device operational status monitoring and scram system according to claim 1, wherein said characterization parameters comprise ignition current signal, pre-spray pressure, inlet temperature and air flow.
5. A distributed supersonic airflow generating device operational status monitoring and scram system according to claim 4, wherein said sensor units are divided into pressure sensors, temperature sensors and flow sensors.
6. The system of claim 1, wherein the criteria content of the criteria table includes a measured lower computer number, a time period for which the criteria are valid, and upper and lower limits of a safety range for the corresponding characterization parameter.
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