CN105656365A - Infrared axle temperature detection system modulation type probe infrared radiation modulation device and driving method - Google Patents
Infrared axle temperature detection system modulation type probe infrared radiation modulation device and driving method Download PDFInfo
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- CN105656365A CN105656365A CN201510979809.8A CN201510979809A CN105656365A CN 105656365 A CN105656365 A CN 105656365A CN 201510979809 A CN201510979809 A CN 201510979809A CN 105656365 A CN105656365 A CN 105656365A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/08—Arrangements for controlling the speed or torque of a single motor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/04—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault
- B61K9/06—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault by detecting or indicating heat radiation from overheated axles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/14—Electronic commutators
- H02P6/16—Circuit arrangements for detecting position
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- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention discloses an infrared axle temperature detection system modulation type probe infrared radiation modulation device comprising a modulation driving board, a brushless DC motor and a radiation modulation disc. The modulation driving board comprises a power supply module, a control module, a power inversion module, a circuit protection module, a position signal processing module and a modulation signal processing module. When a wheel sensor in the train coming direction of the rail side detects passing of a train, the wheel sensor transmits a train passing signal to a control machine, and the control machine detects the signal and then transmits a modulation signal to an infrared probe. The modulation driving board receives the modulation signal and then drives the brushless DC motor to stably operate at the designated rotating speed in a high-speed way so as to drive the radiation modulation disc to rotate at the designated speed to modulate axle temperature infrared radiation of the train into radiation flux of which the amplitude continuously changes along with time. Advantages of the infrared axle temperature detection system modulation type probe infrared radiation modulation device are that the device is based on the principle of digital pulse width modulation and is high in precision, high in regulation speed, high in anti-noise performance, low in cost, low in power consumption, flexible to control and great in dynamic response.
Description
Technical field
The invention belongs to train safe monitoring field, be specifically related to infrared journal temperature detection system modulation type probe infra-red radiation modulating device and driving method that a kind of brshless DC motor controlled based on modified form digital PID technique and PWM principle drives.
Background technology
Operationally, load-bearing bearing can produce heat to track train because of friction. Under normal condition, bearing surface temperature can tend towards stability value. When Bearing inner breaks down, friction being made to aggravate, bearing temperature can raise suddenly, forms hot axle, causes cutting axle, cause train overturning time serious, is the major hidden danger of traffic safety.
Infrared journal temperature detection system utilizes infrared ray to carry out contactless train axle temperature detection, it is possible to effectively finds the hot axle of vehicle, it is prevented that overheating of axle bearing, is to ensure that the important monitor and detection equipment of rail transport safety. At present, infrared journal temperature detection system is in China railways along the line extensive application. Infrared probe is the key component of infrared journal temperature detection system, has been responsible for the collection of axle temperature signal, conditioning and amplification. Owing to the axle temperature voltage signal of Infrared Detectors output is very faint, in order to suppress in amplifying circuit the interference such as null offset and effectively suppress spatial interference, infra-red radiation modulation technique is widely adopted in infrared measurement of temperature. In order to improve the detection performance of infrared journal temperature detection system, infrared journal temperature detection system mid-infrared in the market is popped one's head in, and quite a few is popped one's head in for modulation type, namely Infrared Detectors is sent by radiation modulation apparatus again to after train axle infra-red radiation modulation treatment, so that subsequent treatment and transmission, improve signal to noise ratio, improve infrared journal temperature detection system detection accuracy.
The performance of infrared modulated type probe is closely related with the form of radiation modulator and performance. Fast response time, stability are high, the manipulator of life-span length is the necessary basis of infrared modulated detection system efficient operation. Infrared journal temperature detection system belongs to online detection, and train running speed is fast, therefore that infrared modulator response speed and stability requirement is high.
Being arranged on infrared journal temperature detection system train to sail the wheel detector in direction and detect after train crosses car initial signal, infrared probe must start stable work within the extremely short time.If cannot start working in the stipulated time or stability will result in infrared journal temperature detection system car not, lose the faults such as axle, severe additionally, due to infrared journal temperature detection system for field natural environment and electric circumstance, plant maintenance and reprocess that difficulty is big, cost is high, therefore fast response time, the high life, high stability infra-red radiation modulating device be the necessary requirement that infrared journal temperature detection system obtains high reliability, high stability.
Current infrared probe radiation modulation apparatus has the various ways such as employing synchronous motor, brush motor, brushless electric machine to be that main body is constituted, yet with reasons such as the performance characteristics of motor own and drive assembly designs, ubiquity poor reliability, heating height, repair rate are high, the defects such as starting-up response speed is on the low side. Meanwhile, when meeting with thunderbolt or other severe electric circumstances in system, modulating performance is unstable, and driving device fault rate is high.
Summary of the invention
For the above infrared journal temperature detection system modulation type probe infra-red radiation modulating system Problems existing, the present invention proposes one based on modified form digital PID technique and the control of PWM principle, brshless DC motor the infrared journal temperature detection system modulation type driven probe infra-red radiation modulating device and driving method.
Infrared journal temperature detection system modulation type of the present invention probe infra-red radiation modulating device, drives plate, brshless DC motor and infra-red radiation chopper wheel including modulation.
Described control module adopts the single-chip microcomputer with PWM functional module, at least can generate a pair opposite polarity rectangular pulse number with dead band; Power inverting module has the power inverting full-bridge being made up of power MOSFET and power bridge driving chip; Controlling module by pwm control signal regulation and control power bridge driving chip, power bridge driving chip drives Closed-loop control to provide the multi-phase AC power of rectangular pulse form for brshless DC motor; Meanwhile, also the speed of service of brshless DC motor is regulated and controled by pwm signal; Protection circuit module is used for providing stream, under-voltage protection for brshless DC motor; Modulation signal processing module is for receiving the modulation signal that control machine in infrared journal temperature detection system sends, and sends control module to after carrying out Filtering Processing; Power module is used for as position signalling processing module, controls module, power inverting module and brshless DC motor offer power supply supply; Position signalling processing module is used for sending control module to by after Brushless DC Motor Position Signal Pretreatment; Radiation modulation dish is coaxially fixed on brshless DC motor output shaft.
Upper radiation modulation dish, brshless DC motor, modulation drive plate to be placed in inside infrared probe; Wherein, in radiation modulation dish light path between infrared probe form and Infrared Detectors, brshless DC motor drives plate to be connected by cable with modulation, and infrared probe is placed in the probe box placing limit in-orbit, and infrared probe is connected with the control machine being positioned in the machine room of rail limit by cable; The wheel detector being placed in rail limit direction to the car detects when car crossed by train, sends control machine by crossing car signal to by cable; Control to drive plate to send modulation signal to modulation after machine examination measured car signal; Being operated in appointment rotating speed by control module drive brshless DC motor subsequently, thus driving radiation modulation dish to rotate with command speed, train axle temperature infra-red radiation being modulated into amplitude continually varying radiant flux in time.
For the driving method of a kind of infrared journal temperature detection system modulation type probe infra-red radiation modulating device described in claim 1, it is characterised in that: particularly as follows:
Step 1: when car crossed by train, the wheel detector of direction to the car is transmitted by cable and is transmitted across car signal to control machine, and now, control machine sends modulation signal to probe, modulation signal processing module modulation signal is processed.
Step 2: the modulation signal after being processed by modulation signal processing module is sent in the main control chip controlling module, is waken up by main control chip from dormancy.
Step 3: control module and first extract Brushless DC Motor Position signal from position signalling processing module, commutation table according to brshless DC motor exports control signal to power inverting module, and open the change interruption of respective pin level, utilize interruption processing method for brshless DC motor commutation; It is that brshless DC motor is respectively powered mutually successively that power controls inversion module controlling under module controls, and drives brshless DC motor motor quickly to start.
Step 4: after electric motor starting success, controls module and motor is carried out speed governing. Control module obtain the speed of service of current time brshless DC motor by Brushless DC Motor Position signal number of transitions is carried out computing and compare with preset value, then call modified form Digital PID Algorithm meter and carry out PWM control, thus the brshless DC motor speed of service is adjusted.
Step 5: train is crossed after car terminates, train sails out of the wheel detector in direction and provides train and cross car end signal and send control machine to by cable, control machine sends end modulation instructions to modulation by cable and drives plate, this signal is modulated after signal processing module processes and is sent to control module main control chip, main control chip sends control signal to the power bridge driving chip of power inverting module, close power inverting module, stop providing power supply supply to brshless DC motor, brshless DC motor is decelerated to stall naturally, main control chip is from newly entering park mode, wait that car crossed by next column train.
It is an advantage of the current invention that:
1, the present invention proposes infrared journal temperature detection system modulation type probe modulation driving device and the driving strategy that a kind of brshless DC motor based on modified form digital PID technique and PWM technical controlling drives, and adopts brshless DC motor, and cost performance is high, power consumption is little, efficiency is high, and the life-span is long, good stability.
2, the present invention proposes infrared journal temperature detection system modulation type probe modulation driving device and the driving strategy that a kind of brshless DC motor based on modified form digital PID technique and PWM technical controlling drives, based on digital pulsewidth modulation principle, precision is high, governing speed is fast, noiseproof feature is strong, cost is low, power consumption is little, control is flexible, dynamic response is good.
3, the present invention proposes infrared journal temperature detection system modulation type probe infra-red radiation modulating device and the driving strategy that a kind of brshless DC motor controlled based on modified form digital PID technique and PWM principle drives, adopt modified form digital incremental pid control algorithm, effectively improve classical PID algorithm integration saturated phenomenon, significantly eliminate overshoot, easily make system stability, improve regulation quality, integration saturated phenomenon when changing suddenly on a large scale has been also functioned to good inhibiting effect. Make modulation module accelerate fast, enter steady state time short.
4, the present invention proposes infrared journal temperature detection system modulation type probe infra-red radiation modulating device and the driving strategy that a kind of brshless DC motor controlled based on modified form digital PID technique and PWM principle drives; stability is high; link of protection is abundant; including hardware overcurrent protection, hardware over-voltage protection, hardware under-voltage protection, software overcurrent protection etc.
5, the present invention proposes infrared journal temperature detection system modulation type probe infra-red radiation modulating device and driving strategy, compact conformation, the compact that a kind of brshless DC motor controlled based on modified form digital PID technique and PWM principle drives, it is simple to dismounting.
Detailed description of the invention
It is described in further detail below in conjunction with accompanying drawing.
The infrared journal temperature detection system modulation type probe infra-red radiation modulating device that brshless DC motor of the present invention drives, drives plate 1, brshless DC motor 2 and infra-red radiation chopper wheel 3 including modulation, as shown in Figure 1.
Described modulation drives plate 1 by controlling module 101, power inverting module 102, power module 103, position signalling processing module 104, modulation signal processing module 105 and protection circuit module 106. Modulation drives plate 1 by controlling module 101, power inverting module 102, power module 103, position signalling processing module 104, modulation signal processing module 105 and protection circuit module 106. Wherein control module 101 to be connected with power bridge driving chip in modulation signal processing module 105, protection circuit module 106 and power inverting module 102; Power inverting module 102 is connected with power module 103, protection circuit module 106 and brshless DC motor 2 respectively; Power module 103 is connected with position signalling processing module 104, control module 101, power inverting module 102 and brshless DC motor 2 respectively; Position signalling processing module 104 is connected with brshless DC motor 2, control module 101.
Wherein, controlling module 101 main body and adopt the single-chip microcomputer with PWM functional module, at least can generate a pair opposite polarity rectangular pulse number with dead band, this signal is used for controlling the rotating speed of brshless DC motor 2. Power inverting module 102 has the power inverting full-bridge being made up of power MOSFET and power bridge driving chip, and the power MOSFET type number of power full is IRFI630G, and power bridge driving chip is IRS2103 model half-bridge driven chip. Above-mentioned control module 101 receives the modulation signal of control machine transmission in infrared journal temperature detection system and the position feed back signal of brshless DC motor 2 transmission, and brshless DC motor 2 is carried out speed ring, electric current loop closed loop control. Controlling module 101 and pwm control signal is sent to power bridge driving chip, power bridge driving chip drives Closed-loop control to provide the multi-phase AC power of rectangular pulse form for brshless DC motor 2 according to above-mentioned pwm control signal; Meanwhile, control module 101 and regulate and control power drive bridge chip to realize the accuracy controlling of the speed of service to brshless DC motor 2 by PWM.
Protection circuit module 106 is connected with brshless DC motor 2, has power protecting circuit, under-voltage protecting circuit, current foldback circuit and current sampling circuit, is used for providing stream, under-voltage protection for brshless DC motor 2. Modulation signal processing module 105 is for receiving the modulation signal that in infrared journal temperature detection system, control machine sends, and controls module 101 to sending to after this signal filtering process. Power module 103 has voltage stabilizing audion, LC filter circuit, choking-winding, it is used for powering for radiation modulation apparatus of the present invention, particularly as follows: power module 103 accepts the two-way DC source that the control machine of infrared journal temperature detection system provides, respectively the digital control circuit part of radiation modulation apparatus and simulated power circuit part are powered, for avoiding the problem two-way power supplys such as electromagnetic interference mutually isolated. Due between the control machine of infrared journal temperature detection system and power module 103 transmission range farther out, on-the-spot electric circumstance is complicated in addition, the two-way DC source that therefore control machine is also provided by power module 103 carries out voltage stabilizing, suppresses ripple, current limliting etc. to process.
Described position signalling processing module 104 is that main body is constituted by being integrated with multiple d type flip flop chip with public CR end, and d type flip flop chip preferably employs HEF40175UBT model chip.Owing to the change of brshless DC motor 2 out of phase confidence number not simultaneously completes, in addition potential electromagnetic interference, position signalling processing module 104 adopts multiple d type flip flop chip by each for brshless DC motor 2 phase position signal latch, only when CR is effectively along arrival, heterogeneous position signalling is gathered simultaneously and send control module 101 to, adopted level change interrupt method process position signalling by controlling module 101 main control chip. The quantity of d type flip flop chip is equal with brshless DC motor 2 number of phases. The pwm control signal that described trigger CR end is provided by main control chip controls, this pwm control signal is identical with the PWM drive signal frequency driving power bridge chip, dutycycle is identical, opposite polarity, control module 101 and only extract brshless DC motor 2 position signalling when the pwm signal of power inverting module 102 turns off, and utilize interruption processing method to carry out commutation operation, this also avoids the phenomenon that in power inverting module 102, the upper and lower metal-oxide-semiconductor of power bridge simultaneously turns on, add the safety of circuit.
Described brshless DC motor 2 adopts military project level position sensor brshless DC motor 2, water proof and dust proof ability is at more than IP45, rated speed is about 1.2 times of modulation rotating speed, as three-phase nine groove one that preferably can select with position sensor extremely to brshless DC motor 2 or the drag cup brshless DC motor 2 with position sensor, rated voltage 30V, rated speed is at more than 12000r/min, has high efficiency and long-life.
Described infra-red radiation chopper wheel 3 adopts thin metal material disk, anodization is made on surface, as in figure 2 it is shown, be fixed on brshless DC motor 2 output shaft at central through hole A place flange, on disk, the radian such as saturating radiation areas and radio-opaque region is arranged in order continuously.
Described infra-red radiation chopper wheel 3, brshless DC motor 2, modulation drive plate 1 to be placed in inside infrared probe; Wherein, infra-red radiation chopper wheel 3 utilizes flange accessory to be fixed on brshless DC motor 2 output shaft position, and in the light path between infrared probe form and Infrared Detectors, brshless DC motor 2 drives plate 1 to be connected by cable with modulation, infrared probe C is placed in inside the probe box placing limit in-orbit, and infrared probe is connected with the control machine being positioned in the machine room of rail limit by cable. The wheel detector being placed in rail limit direction to the car detects when car crossed by train, and car signal excessively is sent to the control machine of infrared journal temperature detection system by cable, controls to send modulation signal to infrared probe C after machine examination measures this signal. After modulation drives plate 1 to receive this modulation signal, brshless DC motor 2 high-speed stable running is driven to specify rotating speed in the extremely short time, thus driving infra-red radiation chopper wheel 3 to rotate with command speed, train axle temperature infra-red radiation is modulated into amplitude continually varying radiant flux in time.
Described modulation drives plate 1 to be connected with the control machine of infrared journal temperature detection system by cable, and control machine provides two-way DC source and modulation signal to radiation modulation module. when car crossed by train, it is positioned over the direction to the car D wheel detector of distance rail limit probe box one spacing, car signal was transmitted to control machine, control machine sends modulation commencing signal to infrared modulated module immediately, 1 infrared modulated drives the modulation signal processing module 105 in plate 1 to transferring to control module 101 to process after this signal processing, control to perform pre-set programs after module 101 is waken up to start rapidly modulation program 2 brshless DC motor 2 fast and stables are arrived equalising torque near pre-set velocity, owing to the spacing of wheel detector Yu probe box is shorter, in addition train on-line operation speed is fast, this process completes in 1s.Control that machine examination measures that wheel detector sends cross car end signal after drive module to send to modulation to terminate modulation orders, control to close power inverting module 102 after module 101 receives end modulation signal, stop providing multi-phase AC power for brshless DC motor 2, making its natural stall, main control chip reenters park mode and waits that car crossed by next column train simultaneously.
The present invention also proposes the driving method of a kind of infra-red radiation modulating device of popping one's head in for above-mentioned infrared journal temperature detection system modulation type, as it is shown on figure 3, idiographic flow is:
Step 1: when car crossed by train, the wheel detector of direction to the car is transmitted by cable and is transmitted across car signal to control machine, and control machine sends modulation signal by cable to probe immediately, modulation signal processing module 105 this modulation signal is processed.
Step 2: the modulation signal after process is sent in the main control chip controlling module 101 by modulation signal processing module 105, is waken up by main control chip by this signal from dormancy;
Step 3: control module 101 and first extract brshless DC motor 2 position signalling from position signalling processing module 104, commutation table according to brshless DC motor 2 correspondence adopted exports control signal to power inverting module 102, and open the change interruption of respective pin level, utilize interruption processing method for brshless DC motor 2 commutation. It is that brshless DC motor 2 is respectively powered mutually successively that power controls inversion module controlling under module 101 controls, and drives brshless DC motor 2 quickly to start. Gather brshless DC motor 2 operating current by the current collection circuit in power protecting circuit at brshless DC motor 2 commutation interval, control module 101 to commutation interval timing simultaneously, and then start success or not by the two data verification brshless DC motor 2. If judging, brshless DC motor 2 starts failure, then again perform step 3; If judging, brshless DC motor 2 starts successfully, then carry out step 4.
Step 4: brshless DC motor 2 position signalling number of transitions is carried out computing and obtains the speed of service of brshless DC motor 2 and compare with preset value by control module 101, then call modified form Digital PID Algorithm meter and carry out PWM, thus brshless DC motor 2 speed of service is adjusted, method particularly includes:
Brshless DC motor 2 position signalling number of transitions in a unit of time is calculated by controlling module 101, and calculation times is counted, control module 101 simultaneously and calculate the speed V currently without brushless motor 2 always according to position signalling number of transitions, and calculate the difference e=V-V of the speed currently without brushless motor 2 and pre-set velocity further0. Making k is count value, k=1,2,3 ..., then according to brshless DC motor 2 position signalling number of transitions in a unit of time of kth secondary control module 101 calculating, control module 101 the speed governing kth control module 101 exported exports speed electric dutycycle and is:
PWMK=PWMK-1+HP*(ek-ek-1)+HI*HL*ek+HD*(ek-2ek-1+ek-2)
Wherein, ek��ek-1With ek-2Respectively control module 101 kth time, kth-1 time ,-2 differences according to brshless DC motor 2 position signalling number of transitions in a computed unit of time, brshless DC motor 2 speed obtained and pre-set velocity of kth. HP, HI, HDFor ratio, integral differential coefficient in pid algorithm;
For avoiding the impact that classical PID algorithm integration is saturated, making motor faster, more stably in pre-set velocity operate, the pid algorithm of constant coefficient is improved by speed, wherein integration variable coefficient HLFor:
Wherein, A=0.35* | eK|MAX, B=0.25 | eK|MAX;|eK|MAXFor brshless DC motor 2 position signalling number of transitions in control each computed unit of time of module 101, brshless DC motor 2 speed obtained and the maximum in the absolute difference of pre-set velocity.
Control module 101 by above-mentioned algorithm, constantly regulate the equivalent voltage of power inverting output module based on motor present speed, so that radiation modulation dish is rapidly achieved equalising torque at command speed, it is achieved the stable modulation to infra-red radiation.
In Speed Process of DC Motor, control the exchange phase interval timing of module 101 still separated in time, and by current collection circuit, motor working current is sampled, and carry out comparing with threshold value time pre-designed and current threshold respectively after digital filtering process with current data to chronometric data, if current data is excessive or too small, or chronometric data is excessive or too small, it is turned off power inverting module 102, current foldback circuit increases direct impedance protection and controls and power circuit when electric current exceedes preset value, control module 101 subsequently and carry out circuitry self test, confirm errorless after, overcurrent protection module is made to return to normal, restart motor, again perform step 4, otherwise carry out step 5.
Step 5: train is crossed after car terminates, train sails out of the wheel detector in direction and provides train and cross car end signal and send control main frame to by cable, control main frame sends end modulation instructions to modulation by cable and drives plate 1, this signal is modulated after signal processing module 105 processes and is sent to control module 101 main control chip, main control chip sends control signal to the power bridge driving chip of power inverting module 102, close power inverting module 102, stop providing power supply to supply to brshless DC motor 2, brshless DC motor 2 is decelerated to stall naturally, main control chip is from newly entering park mode, wait that car crossed by next column train.
Claims (9)
1. infrared journal temperature detection system modulation type probe infra-red radiation modulating device, it is characterised in that: include modulation and drive plate, brshless DC motor and infra-red radiation chopper wheel;
Described control module adopts the single-chip microcomputer with PWM functional module, at least can generate a pair opposite polarity rectangular pulse number with dead band; Power inverting module has the power inverting full-bridge being made up of power MOSFET and power bridge driving chip; Controlling module by pwm control signal regulation and control power bridge driving chip, power bridge driving chip drives Closed-loop control to provide the multi-phase AC power of rectangular pulse form for brshless DC motor; Meanwhile, also the speed of service of brshless DC motor is regulated and controled by pwm signal; Protection circuit module is used for providing stream, under-voltage protection for brshless DC motor; Modulation signal processing module is for receiving the modulation signal that control machine in infrared journal temperature detection system sends, and sends control module to after carrying out Filtering Processing; Power module is used for as position signalling processing module, controls module, power inverting module and brshless DC motor offer power supply supply; Position signalling processing module is used for sending control module to by after Brushless DC Motor Position Signal Pretreatment; Radiation modulation dish is coaxially fixed on brshless DC motor output shaft;
Upper radiation modulation dish, brshless DC motor, modulation drive plate to be placed in inside infrared probe; Wherein, in radiation modulation dish light path between infrared probe form and Infrared Detectors, brshless DC motor drives plate to be connected by cable with modulation, and infrared probe is placed in the probe box placing limit in-orbit, and infrared probe is connected with the control machine being positioned in the machine room of rail limit by cable;The wheel detector being placed in rail limit direction to the car detects when car crossed by train, sends control machine by crossing car signal to by cable; Control to drive plate to send modulation signal to modulation after machine examination measured car signal; Being operated in appointment rotating speed by control module drive brshless DC motor subsequently, thus driving radiation modulation dish to rotate with command speed, train axle temperature infra-red radiation being modulated into amplitude continually varying radiant flux in time.
2. infrared journal temperature detection system modulation type probe infra-red radiation modulating device as claimed in claim 1, it is characterised in that: described position signalling processing module is that main body is constituted by being integrated with n the d type flip flop chip with public CR end; The quantity of n is equal with the number of phases of brshless DC motor; N D sets out device chip by each for brshless DC motor phase position signal latch, is only gathered by heterogeneous position signalling when CR is effectively along arrival simultaneously and sends control module to.
3. infrared journal temperature detection system modulation type probe infra-red radiation modulating device as claimed in claim 1, it is characterized in that: described radiation modulation dish adopts thin metal material disk, anodization is made on surface, and on disk, the radian such as saturating radiation areas and radio-opaque region is arranged in order continuously.
4. infrared journal temperature detection system modulation type probe infra-red radiation modulating device as claimed in claim 1, it is characterized in that: described brshless DC motor adopts military project level position sensor brshless DC motor, water proof and dust proof ability is at more than IP45, and rated speed is 1.2 times of modulation rotating speed.
5. infrared journal temperature detection system modulation type probe infra-red radiation modulating device as claimed in claim 1, it is characterized in that: described power module accepts the two-way DC source that the control machine of infrared journal temperature detection system provides, two-way DC source is carried out voltage stabilizing, suppresses ripple, current limliting to process.
6. for the driving method of a kind of infrared journal temperature detection system modulation type probe infra-red radiation modulating device described in claim 1, it is characterised in that: particularly as follows:
Step 1: when car crossed by train, the wheel detector of direction to the car is transmitted by cable and is transmitted across car signal to control machine, and now, control machine sends modulation signal to probe, modulation signal processing module modulation signal is processed;
Step 2: the modulation signal after being processed by modulation signal processing module is sent in the main control chip controlling module, is waken up by main control chip from dormancy;
Step 3: control module and first extract Brushless DC Motor Position signal from position signalling processing module, commutation table according to brshless DC motor exports control signal to power inverting module, and open the change interruption of respective pin level, utilize interruption processing method for brshless DC motor commutation; It is that brshless DC motor is respectively powered mutually successively that power controls inversion module controlling under module controls, and drives brshless DC motor motor quickly to start.
Step 4: after electric motor starting success, controls module and motor is carried out speed governing. Control module obtain the speed of service of current time brshless DC motor by Brushless DC Motor Position signal number of transitions is carried out computing and compare with preset value, then call modified form Digital PID Algorithm meter and carry out PWM control, thus the brshless DC motor speed of service is adjusted.
Step 5: train is crossed after car terminates, train sails out of the wheel detector in direction and provides train and cross car end signal and send control machine to by cable, control machine sends end modulation instructions to modulation by cable and drives plate, this signal is modulated after signal processing module processes and is sent to control module main control chip, main control chip sends control signal to the power bridge driving chip of power inverting module, close power inverting module, stop providing power supply supply to brshless DC motor, brshless DC motor is decelerated to stall naturally, main control chip is from newly entering park mode, wait that car crossed by next column train.
7. the driving method of a kind of infrared journal temperature detection system modulation type as claimed in claim 5 probe infra-red radiation modulating device, it is characterized in that: in step 3, brshless DC motor operating current is gathered at brshless DC motor commutation interval, simultaneously by controlling module to commutation interval timing, thus, it is judged that whether brshless DC motor starts successful; If judging, brshless DC motor starts unsuccessfully, then again perform step 3.
8. the driving method of a kind of infrared journal temperature detection system modulation type as claimed in claim 5 probe infra-red radiation modulating device, it is characterised in that: described step 4 method particularly includes:
Order controls module kth time and calculates Brushless DC Motor Position signal number of transitions in a unit of time, and calculates motor present speed V based on these datak; Calculate the difference e obtaining present speed with pre-set velocityk=Vk-V0; Controlling the K-1 time speed sampling value of calculation of module is VK-1, then the K-1 time speed difference ek-1=VK-1-V0; The same the K-2 time speed sampling value of calculation of module that control is VK-2, then the K-1 time speed difference ek-2=VK-2-V0;
Then kth control module output speed electric dutycycle is:
PWMK=PWMK-1+HP*(ek-ek-1)+HI*HL*ek+HD*(ek-2ek-1+ek-2)��
The pid algorithm of constant coefficient is improved, wherein integration variable coefficient HLFor:
Wherein, A=0.35* | eK|MAX, B=0.25 | eK|MAX; | eK|MAXFor Brushless DC Motor Position signal number of transitions in control each computed unit of time of module, the brushless dc motor speed obtained and the maximum in the absolute difference of pre-set velocity.
9. the driving method of a kind of infrared journal temperature detection system modulation type as claimed in claim 5 probe infra-red radiation modulating device, it is characterized in that: in step 4, control the exchange phase interval timing of modular spacing certain time, and by current collection circuit, motor working current is sampled, and carry out comparing with threshold value time pre-designed and current threshold respectively after digital filtering process with current data to chronometric data, if current data is excessive or too small, or chronometric data is excessive or too small, it is turned off power inverting module, current foldback circuit increases direct impedance protection and controls and power circuit when electric current exceedes preset value, control module subsequently and carry out circuitry self test, confirm errorless after, overcurrent protection module is made to return to normal, restart motor.
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| CN201510979809.8A CN105656365B (en) | 2015-12-23 | 2015-12-23 | Infrared journal temperature detection system modulation type probe infra-red radiation modulating device and driving method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253786A (en) * | 2016-08-19 | 2016-12-21 | 深圳市高科润电子有限公司 | A kind of novel square wave drive filtering method without position motors |
| CN108051092A (en) * | 2017-11-30 | 2018-05-18 | 广汉科峰电子有限责任公司 | The optical modulation and demodulating system of thermosensitive resistance type high speed shaft temperature detector |
| CN108900140A (en) * | 2018-06-07 | 2018-11-27 | 江苏江荣智能科技有限公司 | A kind of isolation temperature measurement circuit for drive control system of permanent magnet synchronous motor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550392A (en) * | 2003-05-14 | 2004-12-01 | 通用电气公司 | Method and apparatus for time-phased constant ir energy delta source |
| CN101181901A (en) * | 2007-12-03 | 2008-05-21 | 北京康拓红外技术有限公司 | Hotbox distinguishing method for train infrared shaft-temperature detecting system |
| CN103386992A (en) * | 2012-05-09 | 2013-11-13 | 石馀 | Locomotive axle temperature monitoring device |
| CN204506921U (en) * | 2015-03-27 | 2015-07-29 | 广汉科峰电子有限责任公司 | Vehicle operating safety and intelligent monitoring system |
| CN204527212U (en) * | 2015-03-09 | 2015-08-05 | 北京纵横机电技术开发公司 | The axis temperature alarming equipment of EMU |
-
2015
- 2015-12-23 CN CN201510979809.8A patent/CN105656365B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550392A (en) * | 2003-05-14 | 2004-12-01 | 通用电气公司 | Method and apparatus for time-phased constant ir energy delta source |
| CN101181901A (en) * | 2007-12-03 | 2008-05-21 | 北京康拓红外技术有限公司 | Hotbox distinguishing method for train infrared shaft-temperature detecting system |
| CN103386992A (en) * | 2012-05-09 | 2013-11-13 | 石馀 | Locomotive axle temperature monitoring device |
| CN204527212U (en) * | 2015-03-09 | 2015-08-05 | 北京纵横机电技术开发公司 | The axis temperature alarming equipment of EMU |
| CN204506921U (en) * | 2015-03-27 | 2015-07-29 | 广汉科峰电子有限责任公司 | Vehicle operating safety and intelligent monitoring system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253786A (en) * | 2016-08-19 | 2016-12-21 | 深圳市高科润电子有限公司 | A kind of novel square wave drive filtering method without position motors |
| CN106253786B (en) * | 2016-08-19 | 2018-12-07 | 深圳市高科润电子有限公司 | A kind of square wave driving filtering method of no position motors |
| CN108051092A (en) * | 2017-11-30 | 2018-05-18 | 广汉科峰电子有限责任公司 | The optical modulation and demodulating system of thermosensitive resistance type high speed shaft temperature detector |
| CN108051092B (en) * | 2017-11-30 | 2020-03-31 | 广汉科峰电子有限责任公司 | Optical modulation and demodulation system of thermistor type high-speed shaft temperature detector |
| CN108900140A (en) * | 2018-06-07 | 2018-11-27 | 江苏江荣智能科技有限公司 | A kind of isolation temperature measurement circuit for drive control system of permanent magnet synchronous motor |
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| CN105656365B (en) | 2018-08-03 |
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