CN103983955B - Power monitoring method in receiving and transmitting module test - Google Patents

Power monitoring method in receiving and transmitting module test Download PDF

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Publication number
CN103983955B
CN103983955B CN201410214386.6A CN201410214386A CN103983955B CN 103983955 B CN103983955 B CN 103983955B CN 201410214386 A CN201410214386 A CN 201410214386A CN 103983955 B CN103983955 B CN 103983955B
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China
Prior art keywords
thread
power supply
monitoring
power
test
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CN201410214386.6A
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CN103983955A (en
Inventor
公承
丁志钊
徐宝令
张龙
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CLP Kesiyi Technology Co Ltd
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CETC 41 Institute
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40Means for monitoring or calibrating
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40Means for monitoring or calibrating
    • G01S7/4004Means for monitoring or calibrating of parts of a radar system
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40Means for monitoring or calibrating
    • G01S7/4004Means for monitoring or calibrating of parts of a radar system
    • G01S7/4008Means for monitoring or calibrating of parts of a radar system of transmitters
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/40Means for monitoring or calibrating
    • G01S7/4004Means for monitoring or calibrating of parts of a radar system
    • G01S7/4021Means for monitoring or calibrating of parts of a radar system of receivers

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  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Stand-By Power Supply Arrangements (AREA)
  • Tests Of Electronic Circuits (AREA)

Abstract

The invention provides a power monitoring method in receiving and transmitting module test. The method comprises the steps that after a main thread is started, the electrifying sequence of a power module is controlled first, and after electrifying is successful, a test thread and a power monitoring thread are started; then, the test thread completes all function tests of a receiving and transmitting module, the power monitoring thread monitors power output voltages and currents, and a thread lock and a global marking variable are arranged between the test thread and the monitoring thread; in the ending process of the main thread, under the normal condition, the test thread is ended first, and after test data storage operation is completed, orderly outage is conducted on the receiving and transmitting module; otherwise, a power source is turned off according to the sequence, and then the test data storage operation is conducted. According to the power monitoring method in the receiving and transmitting module test, the purpose of protecting the tested receiving and transmitting module in the test process is achieved, meanwhile, interaction of a power monitoring protecting thread and a receiving and transmitting module test thread is achieved in a multi-thread operation mode, and therefore the orderliness and the reasonability of the test are achieved.

Description

Method for monitoring power supply in a kind of transmitting-receiving subassembly test
Technical field
The present invention relates to method for monitoring power supply in the test of technical field of measurement and test, more particularly to transmitting-receiving subassembly.
Background technology
Transmitting-receiving subassembly is the Typical Representative of microwave multifunctional module, is typically made up of one or more transceiver channel.It To be located at a class microwave multipurpose multifunctional operating system of the equipment final stage such as radar, electronic countermeasure, and be quantity at most, while being also the most Important component;From from the point of view of test, it is the class microwave component that test parameter is most, test realization is most complicated.
In test process, primary problem is ensuring that the safety of measured piece, and this is the premise bar that test can be carried out Part.For transmitting-receiving subassembly, due to reasons such as its transmission channel power amplifier normal works, its power-up must be according to first bearing Positive order afterwards, and power-off then need to be possible to damage in a short period of time according to first just negative afterwards order, otherwise transmitting-receiving subassembly It is bad.
At present power control unit concrete operating principle is:When upper electric, negative supply enters Jing first after power supply extension set Cross inverting amplifier, the negative supply after inverted amplification becomes the input signal of control circuit, then produce Jing after control circuit after The switch controlling signal of electrical equipment, being now input into the positive supply of relay input to export.Once as shown in figure 1, Negative supply power down, then the control signal of relay will disappear automatically, and relay will be off, natural positive supply cannot be exported, So it is achieved that the orderly control of power supply.If only two-way power supply, the realization of power supply is relative or relatively simple, But if three tunnel above power supplys, sequence power-on enables realization, but any power supply all the way occurs event in test process Barrier, is then extremely difficult to carry out power-off according to backward, and hardware circuit will be more complicated.With the spaceborne transmitting-receiving subassembly of certain model As a example by, its altogether needs ± 3.3V ,+5V three-way power, powering order is -3.3V ,+3.3V ,+5V, power down sequence be+5V ,+ 3.3V, -3.3V, this sequentially must be followed strictly.In view of the importance of power supply electrifying/power-off and once occur exception after The seriousness of fruit, must carry out monitor in real time in transmitting-receiving subassembly test process to power supply, and strengthen the protection of abnormal conditions.
It is becoming for future development that Power Supply Monitoring protects the multithreading interaction method of operation of thread and transmitting-receiving subassembly test thread Gesture, there is presently no more ripe and general implementation, and its order and reasonability are in urgent need to be improved.
The content of the invention
The present invention proposes method for monitoring power supply in a kind of transmitting-receiving subassembly test, solves in transmitting-receiving subassembly test process sequentially Power-up/down and a difficult problem for live electrical power monitoring, while realizing Power Supply Monitoring protection thread and receipts with the method for operation of multithreading Send out the interaction of module testing thread.
The technical scheme is that what is be achieved in that:
Method for monitoring power supply in a kind of transmitting-receiving subassembly test, after main thread starts, controls first the upper electricity of power module Sequentially, test thread and Power Supply Monitoring thread are opened after upper electric success;
Then, the various functions test that thread completes transmitting-receiving subassembly, Power Supply Monitoring thread monitoring electric power output voltage are tested And electric current, thread lock and overall identification variable are set between test thread and monitoring thread;
In main thread terminal procedure, under normal circumstances FEFO is tested into thread, complete test data and preserve right after operation Transmitting-receiving subassembly order power-off;Conversely, then first closing power supply in order, then carry out test data preservation operation.
Alternatively, main thread controls in order electricity on multiple power modules after opening, and multiple power modules are controlled respectively Power supply is sequentially output to transmitting-receiving subassembly;Control to carry out delay operation after electricity on each power module, then control next power supply Module is exported, if power up control failure or output error are immediately exited from.
Alternatively, electricity success arranges thread lock and overall identification variable in main thread on all power modules, uses Timing routine monitors in turn the output of each power module at interval of time power-on monitoring thread.
Alternatively, in Power Supply Monitoring thread, first determine whether whether overall identification variable is reset, if overall identification becomes Amount is set, then directly return, and the Power Supply Monitoring thread terminates;If overall identification variable is reset, thread lock is obtained, set is complete Office's marking variable, gathers power supply output data;Thread lock is discharged after the monitoring normal termination of one round, terminate monitoring thread, most After reset global variable.
Alternatively, if Power Supply Monitoring thread finds power supply output abnormality, the control sentence of power supply 3 in power module is obtained first Handle, closes the power supply output, then closes power supply 2, power supply 1 successively with same step, and the abnormity of power supply information for collecting is write Enter text, deposit in specified location.
Alternatively, the normal output area of power supply is set as (V*Pv1, V*Pv2), the normal output area of electric current is set as (I*PI1, I*n*PI2), wherein n for transmitting-receiving subassembly quantity, Pv1、Pv2、PI1、PI2The respectively normal floating model of voltage x current Enclose.
The invention has the beneficial effects as follows:
(1) multiple power modules are monitored, reaches the purpose that tested transmitting-receiving subassembly is protected in test process;
(2) while realizing that Power Supply Monitoring protection thread and transmitting-receiving subassembly test the friendship of thread with the method for operation of multithreading Mutually, so as to realize test order and reasonability.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is existing power supply extension set schematic diagram;
Fig. 2 is the flow chart of method for monitoring power supply in transmitting-receiving subassembly test of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made Embodiment, belongs to the scope of protection of the invention.
Although managing multiple power modules in prior art using the method for special power supply control apparatus can reach guarantor The purpose of shield, but have its limitation, it is in particular in that the design cycle is long, implementation method is complicated, relatively costly, and can increase survey Test system scale, makes system tend to too fat to move.
The present invention provides a kind of method that multiple power modules are monitored in transmitting-receiving subassembly test, reaches in test process and protects The purpose of tested transmitting-receiving subassembly, while realizing Power Supply Monitoring protection thread and transmitting-receiving subassembly p-wire with the method for operation of multithreading The interaction of journey, so as to realize order and the reasonability tested.
As shown in Fig. 2 method for monitoring power supply in a kind of transmitting-receiving subassembly test of the present invention, after main thread starts, first Test thread and Power Supply Monitoring thread are just opened in the electric sequence of control power module, upper electricity success;Then, test thread to complete The various functions test of transmitting-receiving subassembly, Power Supply Monitoring thread monitoring electric power output voltage and electric current, test thread and monitoring thread Between thread lock and overall identification variable are set, so as to ensure that controller unit handle will not simultaneously be taken by two threads.Mastery routine Terminal procedure, tests thread by FEFO under normal circumstances, completes disconnected to transmitting-receiving subassembly order after the operations such as test data preservation Electricity.Conversely, then first closing power supply in order, then carry out the operation such as test data preservation.
Main thread controls in order electricity on multiple power modules after opening, the present embodiment divides by taking 3 power modules as an example Not Kong Zhi three power modules be sequentially output on power supply 1, power supply 2, power supply 3 to transmitting-receiving subassembly.Control to be carried out after each module Delay operation, such as time delay 5 seconds, it is ensured that control next power module output after the success of upper electricity again, if power up control failure Or output error is immediately exited from.
Method for monitoring power supply in the transmitting-receiving subassembly test of the present invention, electricity successfully sets in main thread on all power modules Thread lock and overall identification variable are put, using timing routine every 1-1.5 second power-on monitoring threads, each electricity is monitored in turn The output in source.First determine whether whether overall identification variable is reset in Power Supply Monitoring thread, if overall identification variable is set to Position, then directly return, and the monitoring thread terminates;If overall identification variable is reset, illustrate that current block is not controlled, can be with Collection power supply output data, now obtains thread lock, and set overall identification variable will not be by other to ensure current monitor power supply Thread (referring mainly to test thread) obtains control, it is to avoid contention for resources.One round monitoring normal termination after discharge thread lock, Terminate monitoring thread, finally reset global variable.
If Power Supply Monitoring thread finds power supply output abnormality, the control handle of power supply 3 is obtained first, close the power supply defeated Go out, then power supply 2, power supply 1 closed successively with same step, the abnormity of power supply information for collecting will be written into text, Deposit in specified location to check for user.
In addition, the normal output area of power supply can be done according to the scale of tested transmitting-receiving subassembly and type matching somebody with somebody accordingly Put.For example, be up to n transmitting-receiving subassembly is simultaneously to be measured in test process, and each component rated voltage is V, running current For I, the normal output area of power supply is set as (V*Pv1, V*Pv2), the normal output area of electric current is set as (I*PI1, I*n* PI2), wherein n for transmitting-receiving subassembly quantity, Pv1、Pv2、PI1、PI2The respectively normal domain of walker of voltage x current.
Once monitoring the monitoring thread of main thread and time opening after normal termination may all obtain thread lock control power supply, Due to the presence of overall identification variable, they will not simultaneously control same power supply, it is ensured that test data it is correct.
Method for monitoring power supply in the transmitting-receiving subassembly test of the present invention, reaches the mesh that tested transmitting-receiving subassembly is protected in test process , while realize that Power Supply Monitoring protection thread and transmitting-receiving subassembly test the interaction of thread with the method for operation of multithreading, so as to reality The order now tested and reasonability.
Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present invention Within god and principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.

Claims (6)

1. method for monitoring power supply during a kind of transmitting-receiving subassembly is tested, it is characterised in that after main thread starts, controls first power supply mould The electric sequence of block, opens test thread and Power Supply Monitoring thread after upper electric success;
Then, the various functions test that thread completes transmitting-receiving subassembly, Power Supply Monitoring thread monitoring electric power output voltage and electricity are tested Stream, arranges thread lock and overall identification variable between test thread and monitoring thread;
In main thread terminal procedure, under normal circumstances FEFO is tested into thread, complete test data and preserve after operation to transmitting-receiving Component priority order power-off;Conversely, then first closing power supply in order, then carry out test data preservation operation;
Electricity success on all power modules arranges thread lock and overall identification variable in main thread, using timing routine every 1-1.5 second power-on monitoring threads, monitor in turn the output of each power supply;Global mark is first determined whether in Power Supply Monitoring thread Know whether variable is reset, if overall identification variable is set, directly return, the monitoring thread terminates;If overall identification Variable is reset, illustrates that current block is not controlled, gathers power supply output data, now obtains thread lock, the global mark of set Know variable to ensure that current monitor power supply will not obtain control by other threads, it is to avoid contention for resources;The monitoring of one round is normal Thread lock is discharged after end, terminates monitoring thread, finally reset global variable.
2. method for monitoring power supply during transmitting-receiving subassembly as claimed in claim 1 is tested, it is characterised in that main thread is pressed after opening Electricity, controls respectively multiple power modules and is sequentially output power supply to transmitting-receiving subassembly on the multiple power modules of sequential control;Control is every Delay operation is carried out on individual power module after electricity, then controls next power module output, if power up control failure or defeated Make mistake and immediately exit from.
3. method for monitoring power supply during transmitting-receiving subassembly as claimed in claim 1 is tested, it is characterised in that electricity on all power modules Success arranges thread lock and overall identification variable in main thread, and line is monitored at interval of time power-on using timing routine Journey, monitors in turn the output of each power module.
4. method for monitoring power supply during transmitting-receiving subassembly as claimed in claim 3 is tested, it is characterised in that in Power Supply Monitoring thread In, first determine whether whether overall identification variable is reset, if overall identification variable is set, directly return, the power supply prison Control thread terminates;If overall identification variable is reset, thread lock is obtained, set overall identification variable gathers power supply output data; Thread lock being discharged after the monitoring normal termination of one round, terminating monitoring thread, finally reset global variable.
5. method for monitoring power supply during transmitting-receiving subassembly as claimed in claim 4 is tested, it is characterised in that if Power Supply Monitoring thread is sent out Existing power supply output abnormality, obtains first the control handle of power supply 3 in power module, the power supply output is closed, then with same Step closes successively power supply 2, power supply 1, the abnormity of power supply information write text for collecting, and deposits in specified location.
6. method for monitoring power supply during transmitting-receiving subassembly as claimed in claim 1 is tested, it is characterised in that the normal output model of voltage Enclose and be set as (V*80%, V*120%), the normal output area of electric current is set as (I*80%, I*n*120%), wherein n is receipts Send out the quantity of component.
CN201410214386.6A 2014-05-15 2014-05-15 Power monitoring method in receiving and transmitting module test Active CN103983955B (en)

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Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
CN104932299B (en) * 2015-04-23 2018-10-12 中国电子科技集团公司第四十一研究所 Apparatus for protecting power supply and method in a kind of T/R module testings
CN107885542A (en) * 2017-09-22 2018-04-06 广州亦云信息技术股份有限公司 All-in-one start-up and shut-down control method, electronic equipment, storage medium, control system
CN109164904A (en) * 2018-10-16 2019-01-08 郑州云海信息技术有限公司 A kind of polymorphic type server electrification control method, device, equipment and storage medium
CN110068801B (en) * 2019-04-16 2023-03-17 武汉大学 Short wave digital receiver based on FPGA

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101599027A (en) * 2009-06-30 2009-12-09 中兴通讯股份有限公司 A kind of thread pool management method and system thereof
CN103163486A (en) * 2011-12-14 2013-06-19 西安广融电气有限公司 Radar antenna power source failure detection circuit
CN103259559A (en) * 2013-05-20 2013-08-21 成都雷电微力科技有限公司 W-band receiving and transmitting assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62231500A (en) * 1986-03-31 1987-10-12 Toshiba Corp Semiconductor storage device
TWI477016B (en) * 2006-07-24 2015-03-11 Newire Inc Source device for use with electrical flat wire, electrical flat wire system, method for monitoring an electrical flat wire and active safety device for use with electical flat wire

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101599027A (en) * 2009-06-30 2009-12-09 中兴通讯股份有限公司 A kind of thread pool management method and system thereof
CN103163486A (en) * 2011-12-14 2013-06-19 西安广融电气有限公司 Radar antenna power source failure detection circuit
CN103259559A (en) * 2013-05-20 2013-08-21 成都雷电微力科技有限公司 W-band receiving and transmitting assembly

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Effective date of registration: 20190314

Address after: 266000 No. 98 Xiangjiang Road, Huangdao District, Qingdao City, Shandong Province

Patentee after: China Electronics Technology Instrument and Meter Co., Ltd.

Address before: 266555 No. 98 Xiangjiang Road, Qingdao economic and Technological Development Zone, Shandong

Patentee before: The 41st Institute of CETC

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Address after: 266555 No. 98 Xiangjiang Road, Huangdao District, Qingdao City, Shandong Province

Patentee after: CLP kesiyi Technology Co.,Ltd.

Address before: 266000 No. 98 Xiangjiang Road, Huangdao District, Qingdao City, Shandong Province

Patentee before: CHINA ELECTRONIC TECHNOLOGY INSTRUMENTS Co.,Ltd.