CN102589870B - System for testing service life of special straight reciprocating motion mechanism - Google Patents
System for testing service life of special straight reciprocating motion mechanism Download PDFInfo
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- CN102589870B CN102589870B CN201210062727.3A CN201210062727A CN102589870B CN 102589870 B CN102589870 B CN 102589870B CN 201210062727 A CN201210062727 A CN 201210062727A CN 102589870 B CN102589870 B CN 102589870B
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Abstract
The invention provides a system for testing the service life of a special straight reciprocating motion mechanism. The system is characterized by comprising a microcontroller module, wherein the microcontroller module drives a straight reciprocating motion mechanism through a motion mechanism drive module, a motion mechanism monitoring module is used for detecting the motion state of the straight reciprocating motion mechanism and feeding back a signal to the microcontroller module, the microcontroller module is interacted with the outside through a human-machine interface module, and a power supply module is used for respectively supplying power to the motion mechanism drive module, the motion mechanism monitoring module and the microcontroller module. The system for testing the service life of the special straight reciprocating motion mechanism, disclosed by the invention, has the advantages that a simple and reliable mature design and a redundant design are selected for a circuit; the strong current part and the weak current part in a circuit system are subjected to necessary separation by using a separator, and thus the continuous and stable operation of a complete machine of the system is ensured; and a motion mechanism out-of-control scram protection and remote alarm device is designed, thus the straight reciprocating motion mechanism is protected from being damaged because of being out of control, and the reliability of such a straight motion mechanism service life tester is fully ensured.
Description
Technical field
The present invention relates to a kind of life-span test system of linear reciprocating mechanism, belong to the equipment technology field of measuring.
Background technology
In high-tech sectors such as Aero-Space, the application of extraordinary motion is very widely.Due to the special nature in these fields, this type of motion must complete specific complex job continuously reliably, and this requirement for the kinetic property of motion is very harsh.Meeting under the prerequisite of operations specific, from the angle of reliability, be also the key factor that needs are considered emphatically the serviceable life of extraordinary motion.Thereby for the life test of extraordinary motion, being also one is worth the problem of deeply considering.Extraordinary motion is used specific type of electric machine conventionally, thereby has unconventional mode of motion, and its life test is also had to higher complicacy.
Linear electric motors are the special motors of a class, also referred to as linear electric machine.Linear electric motors are compared with traditional electric rotating machine, have following several incomparable features: the one, and simple in structure, its weight and volume declines widely; The 2nd, positioning precision is high; The 3rd, fast, highly sensitive, the servo-actuated property of reaction velocity is good; The 4th, safe and reliable, the life-span is long.Linear electric motors can be realized non contact transmission power, and mechanical friction loss is close to zero, so fault is few, and freedom from repairs, thereby it is safe and reliable, the life-span is long.Just because of these unique advantages, linear electric motors are having a wide range of applications aspect the driving mechanism as long-term operation continuously.
The extraordinary motion that has such class, because the linear electric motors of its use have the feature of straight reciprocating motion, needs a specific life-span tester, meets the operating characteristic of testing extraordinary straight-line motion mechanism.
Summary of the invention
The object of this invention is to provide a kind of life-span test system that drives and monitor extraordinary linear reciprocating mechanism; to driving extraordinary linear reciprocating mechanism; and its motion state is carried out to Real-Time Monitoring; to examine this type of motion life-span can meet continuous reliability service under real work condition, can realize fault alarm simultaneously and can guide staff to carry out manual intervention to protect in time this type of motion.
For achieving the above object, technical scheme of the present invention is to provide a kind of life-span test system of special linear reciprocating mechanism, it is characterized in that: comprise micro controller module, micro controller module drives linear reciprocating mechanism by motion driver module; Motion state by motion monitoring modular detection of straight lines reciprocating mechanism detects, and by signal feedback to micro controller module; By human-machine interface module, realize micro controller module and operating personnel are mutual; Power module is respectively motion driver module, motion monitoring modular and micro controller module power supply is provided.
Preferably, described human-machine interface module comprises that liquid crystal display, keyboard input block and GSM data terminal unit (DTU) are all connected with described micro controller module for showing the current motion state of linear reciprocating mechanism and the liquid crystal display of emergency alarm, keyboard input block and GSM data terminal unit (DTU).
Preferably, described keyboard input block adopts 5 key mapping keypads, key mapping placed in the middle is for confirming and cancel the multiplexing key of setting, two for selecting the options button of frequency and the amplitude parameter of power drive signal, and two for increase progressively and the parameter of successively decreasing key is set, be distributed in the surrounding of multiplexing key.
Preferably, described motion driver module comprises the direct digital synthesiser (DDS) connecting successively, signal inversion circuit, programmable gain amplifier (PGA), isolated amplifier (ISO), power amplifier (PA) and current of electric detecting unit, direct digital synthesiser wherein, programmable gain amplifier is all connected described micro controller module (MCU) with power amplifier, current of electric detecting unit connects respectively linear electric motors and the measurement terminal of described linear reciprocating mechanism, direct digital synthesiser produces for driving the triangular waveform signal of linear electric motors, and its frequency is controlled and adjustable by described micro controller module (MCU).
Preferably, described signal inversion circuit is transformed into bipolar signal output for the triangular waveform unipolar signal that described direct digital synthesiser is produced.
Preferably, described motion monitoring modular is two paths of signals testing circuit and limit sensors at least, limit sensors is connected with described micro controller module after connecting successively the first magnetic isolator and first signal conditioning unit, and at least two paths of signals testing circuit connects described micro controller module by single pole multiple throw.
Preferably, signal deteching circuit comprises Hall element described in every road, and Hall element connects magnetic isolator and signal condition unit successively.
Preferably, described power module comprises ac-dc converter circuit, and ac-dc converter circuit connects electric power management circuit.
Compared with prior art, advantage of the present invention is on circuit, to select simple and reliable maturation design and Redundancy Design (Hall element double copies), selects technical grade or automotive grade product on components and parts.To forceful electric power in system and weak current part, use signal isolator to carry out necessary isolation, to guarantee the continuous reliability service of system complete machine.Design extraordinary motion urgency out of control and stop protection and remote alarming device, to protect, motion is out of control can not damaged, and guarantees fully the reliability of this type of straight-line motion mechanism life-span tester.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the life-span test system of linear reciprocating mechanism;
Fig. 2 is the schematic diagram of linear reciprocating mechanism;
Fig. 3 is human-machine interface module structured flowchart;
Fig. 4 is motion driver module structured flowchart;
Fig. 5 is motion detection module structured flowchart;
Fig. 6 is power module structure block diagram;
Fig. 7 is the main process flow diagram of system works.
Embodiment
For the present invention is become apparent, hereby with a preferred embodiment, and coordinate accompanying drawing to be described in detail below.
As shown in Figure 1, the invention provides a kind of life-span test system of linear reciprocating mechanism, by micro controller module MCU, human-machine interface module, motion driver module, motion monitoring modular and power module, formed.Micro controller module MCU controls respectively human-machine interface module, motion driver module, motion monitoring modular.Linear reciprocating mechanism is connected with motion driver module, motion monitoring modular.Power module is given respectively micro controller module MCU, motion driver module and the power supply of motion monitoring modular.
As shown in Figure 2, the linear reciprocating mechanism schematic diagram for detecting in the present invention, comprises linear electric motors and motion.The linear electric motors of this mechanism are connected with motion driver module, motion monitoring module respectively.
As shown in Figure 3, be human-machine interface module structured flowchart, this human-machine interface module comprises liquid crystal display, keyboard and GSM data terminal unit DTU.
Liquid crystal display and keyboard input block are controlled by micro controller module MCU all.Liquid crystal display is used for showing the current motion state of straight-line motion mechanism, and can shows emergency alarm.Keyboard input block adopts 5 key mapping keypad designs, and key mapping placed in the middle is " ESC/ETR " multiplexing key, for confirming and cancellation setting." < " options button and " > " options button are used for selecting frequency and the setting of amplitude parameter; "+" key is set and "-" arranges key, and for the setting of increasing or decreasing parameter, four keys are distributed in " ESC/ETR " multiplexing key surrounding.GSM data terminal unit DTU realizes long-range man-machine interface, default some operating personnel's phone number in GSM data terminal unit DTU, regularly machine operation counting and the working state of system of acquisition are sent in the mobile phone of preset number with note form, handled easily personnel carry out data recording when system breaks down, in time failure code is sent to note form in the mobile phone of preset number, guides in time operating personnel and carry out manual intervention.
As shown in Figure 4, for motion driver module structured flowchart, comprise that the direct digital synthesiser, signal inversion circuit, programmable gain amplifier, isolated amplifier, the power amplifier that connect successively comprise light-coupled isolation part, current of electric detecting unit.The signal wire 1 of direct digital synthesiser and programmable gain amplifier is connected respectively micro controller module MCU with signal wire 2, by micro controller module MCU output control signal.The signal wire 3 of current of electric detecting unit is connected respectively linear electric motors and measuring head with signal wire 4.Direct digital synthesiser is for generation of the triangular waveform signal that drives linear electric motors, and its frequency is controlled by micro controller module MCU and adjustable.Signal inversion circuit changes over bipolar signal output for the triangular waveform unipolar signal that direct digital synthesiser is produced.Programmable gain amplifier is for the amplitude of regulation output signal waveform.Isolated amplifier, for the bipolarity triangular waveform signal of output is isolated, guarantees distortion, makes the linearity, precision, isolation is withstand voltage, and parameter meets system performance requirement.Power amplifier is for amplifying the triangular waveform signal of output, to meet the power requirement of drive motor.In addition, between power amplifier and microcontroller, place optical coupling isolator, realize electrical isolation completely in case stop signal disturbs, by micro controller module MCU, by signal wire 5, produce control signal, realize power amplifier is enabled and forbidden.Current of electric detecting unit, for providing and detect the features such as amplitude, frequency of the current signal of drive motor, also can connect oscillograph and carry out Real Time Observation.
As shown in Figure 5, be motion monitoring modular structured flowchart, comprise the first Hall element A, the second Hall element B, limit sensors, magnetic isolator, signal condition unit, single-pole double-throw switch (SPDT).The first Hall element A, the second Hall element B magnetic isolator and signal condition unit respectively and separately connects and composes two paths of signals testing circuit.Two paths of signals testing circuit connects single-pole double-throw switch (SPDT) again, the signal wire 6 that passes through of single-pole double-throw switch (SPDT) connects micro controller module MCU, single-pole double-throw switch (SPDT) is exported the monitor signal of a road Hall element to micro controller module MCU, after Dang Yi road Hall element breaks down, by micro controller module MCU feedback output control signal, switch single-pole double-throw switch (SPDT), motion can normally be worked on.Signal condition unit directly connects micro controller module MCU by signal wire 7, and when the index glass motion of linear reciprocating mechanism exceeds default home, limit sensors outputs signal to micro controller module MCU.Wherein, magnetic isolation can finely realize signal isolation, and anti-stop signal disturbs mutually, greatly increases stability and the reliability of circuit.The local change of magnetic field strength that Hall element causes for the permanent magnet displacement of perception motor reciprocating, if reach default measurement threshold value, exports effective count pulse of linear electric motors motion.
As shown in Figure 6, for power module structure block diagram, described power module comprises ac-dc converter circuit AC/DC and electric power management circuit, the signal wire 8 Yi road outputs of passing through of power module are connected with motion driver module, motion monitoring modular, micro controller module respectively, and be its power supply, electric power management circuit provides effective distribution of required system power supply, farthest reduces the energy consumption of assembly when idle.Meanwhile, also provide the backup of power module for making provision against emergencies, i.e. signal wire 9 outputs of power module provide.
As shown in Figure 7, for the main process flow diagram of system works, after system works starts and completes the initial work of modules, by micro controller module MCU, be responsible for checking in external memory storage whether have parameters, if having, directly according to the data of storage, carry out the setting of parameter; Otherwise think that system works for the first time, the parameter that the push-button unit by human-machine interface module carries out direct digital synthesiser and programmable gain amplifier arranges, and is responsible for storage after setting completed by micro controller module MCU.Next micro controller module MCU is same checks the parameters of relevant counter and arranges.After everything in readiness, micro controller module MCU enables after waveform by enable power amplifier, and motion driver module just can successfully produce required drive waveforms, drives linear electric motors, thereby makes linear reciprocating mechanism work.The state of the normal work of straight-line motion mechanism, can read from liquid crystal display.The counter pulse that the current of electric detecting unit from driver module and the Hall element in monitoring modular are exported is respectively counted.If micro controller module MCU detects the regime values that regulation appears being greater than in the two difference; or occur that other exceeds normal position such as motion and is detected by the limit sensors of monitoring modular; system is worked by forbidding power amplifier; stop immediately straight-line motion mechanism; and fault alarm is presented in liquid crystal display; start GSM data terminal unit DTU simultaneously; failure code is sent in the mobile phone of preset number with note form; guiding operating personnel carry out manual intervention in time, to protect straight-line motion mechanism.
Claims (7)
1. the life-span test system of a special linear reciprocating mechanism, it is characterized in that: comprise micro controller module (MCU), micro controller module (MCU) drives linear reciprocating mechanism by motion driver module, motion state by motion monitoring modular detection of straight lines reciprocating mechanism detects, and by signal back micro controller module (MCU), micro controller module (MCU) is by human-machine interface module with extraneous mutual, and power module is respectively motion driver module, motion monitoring modular and micro controller module (MCU) power supply is provided;
Described motion driver module comprises the direct digital synthesiser connecting successively, signal inversion circuit, programmable gain amplifier, isolated amplifier, power amplifier and current of electric detecting unit, direct digital synthesiser, programmable gain amplifier is connected described micro controller module (MCU) with power amplifier, current of electric detecting unit connects respectively linear electric motors and the measuring head of described linear reciprocating mechanism, direct digital synthesiser produces for driving the triangular waveform signal of linear electric motors, and its frequency is controlled and adjustable by described micro controller module (MCU).
2. the life-span test system of a kind of special linear reciprocating mechanism as claimed in claim 1, it is characterized in that: described human-machine interface module comprises liquid crystal display, keyboard input block and the GSM data terminal unit (DTU) for showing current linear reciprocating mechanism motion state and emergency alarm, and liquid crystal display, keyboard input block and GSM data terminal unit (DTU) are all connected with described micro controller module (MCU).
3. the life-span test system of a kind of special linear reciprocating mechanism as claimed in claim 2, it is characterized in that: described keyboard input block adopts 5 key mapping keypads, key mapping placed in the middle is for for confirming and cancels the multiplexing key of setting, two for select the options button of frequency and amplitude parameter and two for increase progressively and the parameter of successively decreasing the surrounding that key is distributed in multiplexing key is set.
4. the life-span test system of a kind of special linear reciprocating mechanism as claimed in claim 1, is characterized in that: described signal inversion circuit changes over bipolar signal output for the triangular waveform unipolar signal that described direct digital synthesiser is produced.
5. the life-span test system of a kind of special linear reciprocating mechanism as claimed in claim 1, it is characterized in that: described motion monitoring modular is two paths of signals testing circuit and limit sensors at least, limit sensors is connected with described micro controller module (MCU) after connecting successively the first magnetic isolator and first signal conditioning unit, and at least two paths of signals testing circuit connects described micro controller module (MCU) by single pole multiple throw.
6. the life-span test system of a kind of special linear reciprocating mechanism as claimed in claim 5, is characterized in that: described in every road, signal deteching circuit comprises Hall element, and Hall element connects magnetic isolator and signal condition unit successively.
7. the life-span test system of a kind of special linear reciprocating mechanism as claimed in claim 1, is characterized in that: described power module comprises ac-dc converter circuit, and ac-dc converter circuit connects electric power management circuit.
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| CN201210062727.3A CN102589870B (en) | 2012-03-11 | 2012-03-11 | System for testing service life of special straight reciprocating motion mechanism |
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| CN201210062727.3A CN102589870B (en) | 2012-03-11 | 2012-03-11 | System for testing service life of special straight reciprocating motion mechanism |
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| CN102589870B true CN102589870B (en) | 2014-04-02 |
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| CN108958136A (en) * | 2018-08-28 | 2018-12-07 | 广东好太太科技集团股份有限公司 | A kind of clothes airing machine steel wire rope fracture prevention prior-warning device and method for early warning |
| CN114280477A (en) * | 2021-12-24 | 2022-04-05 | 兰州飞行控制有限责任公司 | Driving device service life testing system and testing method |
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| CN1058832A (en) * | 1990-08-04 | 1992-02-19 | 长春市建材化工实验厂 | Linear shuttle mechanism |
| CN2646950Y (en) * | 2003-09-16 | 2004-10-06 | 赵宝玉 | Linear reciprocating motor |
| RU2238461C1 (en) * | 2003-02-17 | 2004-10-20 | Петербургский государственный университет путей сообщения | Linear motor for reciprocation |
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| JP4339077B2 (en) * | 2003-10-30 | 2009-10-07 | 株式会社 東京ウエルズ | Drive shaft reciprocating system |
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- 2012-03-11 CN CN201210062727.3A patent/CN102589870B/en not_active Expired - Fee Related
Patent Citations (6)
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| CN1058832A (en) * | 1990-08-04 | 1992-02-19 | 长春市建材化工实验厂 | Linear shuttle mechanism |
| RU2238461C1 (en) * | 2003-02-17 | 2004-10-20 | Петербургский государственный университет путей сообщения | Linear motor for reciprocation |
| CN2646950Y (en) * | 2003-09-16 | 2004-10-06 | 赵宝玉 | Linear reciprocating motor |
| JP4339077B2 (en) * | 2003-10-30 | 2009-10-07 | 株式会社 東京ウエルズ | Drive shaft reciprocating system |
| CN101071095A (en) * | 2007-06-11 | 2007-11-14 | 重庆大学 | Linear motor accelerated impact spring fatigue test device |
| CN202075120U (en) * | 2011-04-01 | 2011-12-14 | 北京精密天工滚珠丝杠股份有限公司 | Variable-load service life tester for ball screw pair |
Non-Patent Citations (2)
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| 杨铁宁.直线电机往复泵的性能研究.《中国优秀硕士学位论文去玩数据库 工程科技II辑》.2010,(第3期),33-36. * |
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