CN106802615A - A kind of protection system for echo depth sounder - Google Patents
A kind of protection system for echo depth sounder Download PDFInfo
- Publication number
- CN106802615A CN106802615A CN201710016197.1A CN201710016197A CN106802615A CN 106802615 A CN106802615 A CN 106802615A CN 201710016197 A CN201710016197 A CN 201710016197A CN 106802615 A CN106802615 A CN 106802615A
- Authority
- CN
- China
- Prior art keywords
- radiating circuit
- pin
- pulse width
- output pulse
- hardware
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
- G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
- G01S15/06—Systems determining the position data of a target
- G01S15/08—Systems for measuring distance only
-
- 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
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
- G05B19/0425—Safety, monitoring
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/21—Pc I-O input output
- G05B2219/21155—Over voltage protection
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24024—Safety, surveillance
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24125—Watchdog, check at timed intervals
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24203—Restart, recover from error only if detected states equal stored states
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Acoustics & Sound (AREA)
- Computer Networks & Wireless Communication (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The invention provides a kind of protection system for echo depth sounder, including software controlled unit, hardware monitoring unit, processing unit and execution unit；Software controlled unit controls the output of three road signals, the output of three road signals to include by the timer inside single-chip microcomputer：Timing synchronization pin P0, radiating circuit output pulse width controlling switch P1 and radiating circuit output pulse width allow pin P2；Hardware control unit is built-in with hardware timer, and for periodically output pulse width, output pin is hardware protection pin P3；Processing unit allows pin P2 according to radiating circuit output pulse width controlling switch P1, radiating circuit output pulse width, the input of output hardware protection pin P3 judges whether to drive radiating circuit to work：Drive radiating circuit to work when processing unit allows pin P2, output hardware protection pin P3 to be output as high level simultaneously according to radiating circuit output pulse width controlling switch P1, radiating circuit output pulse width, otherwise turn off radiating circuit work.
Description
Technical field
The present invention relates to survey field, more particularly to a kind of protection system for echo depth sounder.
Background technology
Echo tester produces the instantaneous output voltage for possessing certain pulsewidth by radiating circuit, so that transducer is driven,
Transducer is produced strenuous vibration, so as to produce ultrasonic wave, realize depth survey；The instantaneous output pulse width of radiating circuit it is general by
Single-chip Controlling, output pulse width is bigger, and the energy loss of radiating circuit is bigger, generates heat also more serious；In actually used, due to work(
Rate is larger, and the electromagnetic interference inside sounding instrument is very serious, it is easy to causes SCM program to run and flies, if program fleet moment,
The output state of single-chip microcomputer is driving radiating circuit output pulse width voltage, because normal software flow has been disturbed, therefore
Radiating circuit will be always maintained at output pulse width voltage status, and this will result in radiating circuit device and burns, and trigger serious consequence.
The content of the invention
The invention provides a kind of protection system for echo depth sounder, including software controlled unit, hardware monitoring list
Unit, processing unit and execution unit；
Wherein, the software controlled unit controls the output of three road signals, described three by the timer inside single-chip microcomputer
The output of road signal includes：Timing synchronization pin P0, radiating circuit output pulse width controlling switch P1 and radiating circuit output pulse width
Allow pin P2；
The hardware control unit is built-in with hardware timer, and for periodically output pulse width, output pin is hardware
Protection pin P3；
Processing unit allows pin P2, defeated according to radiating circuit output pulse width controlling switch P1, radiating circuit output pulse width
The input for going out hardware protection pin P3 judges whether to drive radiating circuit work：When processing unit is according to radiating circuit output pulse width
Controlling switch P1, radiating circuit output pulse width allow pin P2, output hardware protection pin P3 to be driven when being output as high level simultaneously
Dynamic radiating circuit work, otherwise turns off radiating circuit work.
The above-mentioned protection system for echo depth sounder, wherein, timing synchronization pin P0 is used for hardware control unit
Hardware timer is started working.
The above-mentioned protection system for echo depth sounder, wherein, radiating circuit output pulse width controlling switch P1 is used to control
The voltage pulse width value of radiating circuit output processed.
The above-mentioned protection system for echo depth sounder, wherein, radiating circuit output pulse width allows pin P2 for limiting
Determine the maximum of radiating circuit output voltage pulsewidth.
The above-mentioned protection system for echo depth sounder, wherein, output hardware protection pin P3 is used in program out of control
In the case of radiating circuit output voltage pulsewidth maximum.
The above-mentioned protection system for echo depth sounder, wherein, the system also includes watchdog device, if every one
Section time watchdog device is not triggered, then system is restarted automatically.
With the safeguard protection of echo tester be combined software+hardware dual protection mechanism by the present invention, realizes tester
Highly reliable operation；Simultaneously with low cost, implementation method is simple.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, below will be to embodiment or description of the prior art
Needed for the accompanying drawing to be used be briefly described, it should be apparent that, drawings in the following description are only more of the invention
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is a kind of structural representation of protection system design for echo depth sounder of the present invention；
Fig. 2 is a kind of fundamental diagram of protection system design for echo depth sounder of the present invention.
Specific embodiment
In the following description, a large amount of concrete details are given to provide more thorough understanding of the invention.So
And, it is obvious to the skilled person that the present invention can be able to without one or more of these details
Implement.In other examples, in order to avoid obscuring with the present invention, do not enter for some technical characteristics well known in the art
Row description.
In order to thoroughly understand the present invention, detailed step and detailed structure will be proposed in following description, so as to
Explaination technical scheme.Presently preferred embodiments of the present invention is described in detail as follows, but in addition to these detailed descriptions, this
Invention can also have other embodiment.
The invention provides a kind of protection system for echo depth sounder, shown in reference picture 1, the system includes software control
Unit processed, hardware monitoring unit, processing unit and execution unit.Wherein, the software controlled unit by single-chip microcomputer inside
Timer, control the output of three road signals, the output of three road signal includes：Timing synchronization pin P0, radiating circuit are defeated
Going out pulse-width controlled pin P1 and radiating circuit output pulse width allows pin P2；The hardware control unit is built-in with hardware regularly
Device, for periodically output pulse width, output pin is hardware protection pin P3；Processing unit is according to radiating circuit output pulse width
Controlling switch P1, radiating circuit output pulse width allow pin P2, the input of output hardware protection pin P3 to judge whether to drive hair
Transmit-receive radio road works, when processing unit allows pin according to radiating circuit output pulse width controlling switch P1, radiating circuit output pulse width
P2, output hardware protection pin P3 are output as driving radiating circuit work during high level simultaneously, otherwise turn off radiating circuit work.
The concrete function of pin is described as follows：The timer that timing synchronization pin P0 is used to trigger hardware control unit starts
Work；Under radiating circuit output pulse width controlling switch P1 decision normal operations, radiating circuit output voltage pwm value, for example
6ms；Radiating circuit output pulse width allows pin P2 for limiting the maximum of radiating circuit output voltage pulsewidth, such as 10ms；
Hardware protection pin P3 is used in the case of program out of control, the maximum of radiating circuit output voltage pulsewidth, such as 14ms.Just
Under the conditions of normal program circuit is performed, radiating circuit is maximum only to export 10m pulsewidth voltages, so as to protect radiating circuit.In program
Run under conditions of flying, radiating circuit is maximum only to export 14ms, can to greatest extent protect radiating circuit.In addition, in order to
The system in case of system halt problem that program fleet is caused is prevented, be increased feed dog mechanism in a program, needed to feed every 20ms and once guard the gate
Dog, otherwise system will restart automatically, and all pins are pulled low automatically, and this mechanism can be in the feelings of hardware monitoring element failure
Under condition, the purpose of protection radiating circuit is reached.
Further, for the system in case of system halt problem for preventing program fleet from causing, the system also includes watchdog device,
If watchdog device is not triggered at regular intervals, system is restarted automatically.For example, need to feed every 20ms once guarding the gate
Dog, otherwise system will restart automatically, and all pins are pulled low automatically, and this mechanism can be in the feelings of hardware monitoring element failure
Under condition, the purpose of protection radiating circuit is reached.
With the safeguard protection of echo tester be combined software+hardware dual protection mechanism by the present invention, realizes tester
Highly reliable operation；Simultaneously with low cost, implementation method is simple.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, wherein the equipment and structure that do not describe in detail to the greatest extent are construed as giving reality with the common mode in this area
Apply；Any those of ordinary skill in the art, in the case where technical solution of the present invention ambit is not departed from, all using the disclosure above
Methods and techniques content make many possible variations and modification to technical solution of the present invention, or be revised as equivalent variations etc.
Effect embodiment, this has no effect on substance of the invention.Therefore, every content without departing from technical solution of the present invention, foundation
Technical spirit of the invention still falls within the present invention to any simple modification, equivalent variation and modification made for any of the above embodiments
In the range of technical scheme protection.
Claims (6)
1. a kind of protection system for echo depth sounder, it is characterised in that including software controlled unit, hardware monitoring unit,
Processing unit and execution unit；
Wherein, the software controlled unit controls the output of three road signals, the three roads letter by the timer inside single-chip microcomputer
Number output include：Timing synchronization pin P0, radiating circuit output pulse width controlling switch P1 and radiating circuit output pulse width are allowed
Pin P2；
The hardware control unit is built-in with hardware timer, and for periodically output pulse width, output pin is hardware protection
Pin P3；
Processing unit allows pin P2, output hard according to radiating circuit output pulse width controlling switch P1, radiating circuit output pulse width
The input of part protection pin P3 judges whether to drive radiating circuit work：When processing unit is controlled according to radiating circuit output pulse width
Pin P1, radiating circuit output pulse width allow pin P2, output hardware protection pin P3 to drive hair when being output as high level simultaneously
Transmit-receive radio road works, and otherwise turns off radiating circuit work.
2. the protection system of echo depth sounder is used for as claimed in claim 1, it is characterised in that timing synchronization pin P0 is used for
The hardware timer of hardware control unit is started working.
3. the protection system of echo depth sounder is used for as claimed in claim 1, it is characterised in that radiating circuit output pulse width control
Pin P1 processed is used for the voltage pulse width value for controlling radiating circuit to export.
4. the protection system of echo depth sounder is used for as claimed in claim 1, it is characterised in that radiating circuit output pulse width is permitted
Perhaps pin P2 is used to limit the maximum of radiating circuit output voltage pulsewidth.
5. the protection system of echo depth sounder is used for as claimed in claim 1, it is characterised in that output hardware protection pin P3
For the maximum of the radiating circuit output voltage pulsewidth in the case of program out of control.
6. the protection system of echo depth sounder is used for as claimed in claim 1, it is characterised in that the system also includes guarding the gate
Dog device, if watchdog device is not triggered at regular intervals, system is restarted automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016197.1A CN106802615B (en) | 2017-01-10 | 2017-01-10 | Protection system for echo sounder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016197.1A CN106802615B (en) | 2017-01-10 | 2017-01-10 | Protection system for echo sounder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106802615A true CN106802615A (en) | 2017-06-06 |
| CN106802615B CN106802615B (en) | 2022-01-28 |
Family
ID=58984373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710016197.1A Active CN106802615B (en) | 2017-01-10 | 2017-01-10 | Protection system for echo sounder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106802615B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3588795A (en) * | 1969-02-27 | 1971-06-28 | Lykes Bros Inc | Depth indicator |
| JPS5622924A (en) * | 1979-08-02 | 1981-03-04 | Nippon Telegr & Teleph Corp <Ntt> | Supervising method for fault of optical fiber |
| CN101667022A (en) * | 2009-09-29 | 2010-03-10 | 河北工业大学 | Device for hardware fault protection of electric actuator and realizing method thereof |
| CN102122881A (en) * | 2011-02-21 | 2011-07-13 | 北京科诺伟业科技有限公司 | High-power IGBT drive protection circuit applied to wind power generation |
| CN201985825U (en) * | 2011-01-28 | 2011-09-21 | 北京康拓科技有限公司 | Pulse generation and pulse width protection circuit based on monostabillity |
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| JP2014033712A (en) * | 2012-08-07 | 2014-02-24 | Sharp Corp | Opening/closing detection circuit and electric device including the same |
| CN103885849A (en) * | 2014-03-13 | 2014-06-25 | 深圳怡化电脑股份有限公司 | Watchdog circuit of electronic system |
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-
2017
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| US3588795A (en) * | 1969-02-27 | 1971-06-28 | Lykes Bros Inc | Depth indicator |
| JPS5622924A (en) * | 1979-08-02 | 1981-03-04 | Nippon Telegr & Teleph Corp <Ntt> | Supervising method for fault of optical fiber |
| CN101667022A (en) * | 2009-09-29 | 2010-03-10 | 河北工业大学 | Device for hardware fault protection of electric actuator and realizing method thereof |
| CN201985825U (en) * | 2011-01-28 | 2011-09-21 | 北京康拓科技有限公司 | Pulse generation and pulse width protection circuit based on monostabillity |
| CN102122881A (en) * | 2011-02-21 | 2011-07-13 | 北京科诺伟业科技有限公司 | High-power IGBT drive protection circuit applied to wind power generation |
| CN102629751A (en) * | 2012-04-26 | 2012-08-08 | 深圳市汉拓数码有限公司 | Over-current protection circuit |
| JP2014033712A (en) * | 2012-08-07 | 2014-02-24 | Sharp Corp | Opening/closing detection circuit and electric device including the same |
| CN103885849A (en) * | 2014-03-13 | 2014-06-25 | 深圳怡化电脑股份有限公司 | Watchdog circuit of electronic system |
| CN103941258A (en) * | 2014-04-04 | 2014-07-23 | 陕西理工学院 | Ultrasonic rangefinder based on single-chip microcomputer |
| CN104267391A (en) * | 2014-09-12 | 2015-01-07 | 海鹰企业集团有限责任公司 | Sonar PMW transmitting circuit |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106802615B (en) | 2022-01-28 |
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