CN205647466U - Ramp signal generating device - Google Patents

Abstract

The utility model provides a ramp signal generating device, include: man -machine interaction module for receive the attribute of ramp signal, include slope, propradation, decline state, upper limit value, lower limit value and keeping instruction, central processing module, with man -machine interaction module connects for attribute to the ramp signal is analyzed, and controls the voltage output that connected oblique wave voltage output module carries out the ramp signal, power module for to above -mentioned each module power supply. By last, realize to receive the ramp signal that operating personnel imported, this ramp signal can be for rising, decline and horizontal voltage signal to between the nuclear power station turn(a)round, simulate out reaction power running state's magnitude of voltage and variation tendency.

Description

A kind of ramp signal generating means

Technical field

This utility model relates to nuclear power station and controls technical field, sends out particularly to a kind of ramp signal Generating apparatus.

Background technology

At present, the domestic in-service nuclear power station cycle of operation that reloads is 12～18 months, a fortune The system equipment of nuclear power station is carried out the most comprehensively preventative maintenance, i.e. in line period The nuclear power station overhaul generally said.Nuclear power station Overhaul Quality is for the safe and stable operation of nuclear power station Play vital effect.Overhaul is that all power stations have, and nuclear power station is through a timing Between run after the parts that can not repair when some will be run at ordinary times overhaul, also the most right Equipment carries out the most FR health check-up, it is ensured that equipment is that safety is available

Nuclear Instrument system (RPN system is again core power measuring system, hereinafter referred to as RPN) Being nuclear power station very important composition system, the major function of RPN system is: 1, supervise continuously Measured reaction heap power, the i.e. reactor axial power of the change of power level is distributed；2, merit is passed through Rate Measurement channel gained signal calculates, and can monitor inclination and the axial power of reactor radially power Deviation；3, in the range of power regulating system, reactor protection system provide power range Neutron fluence rate information；4, it is by power range Measurement channel in the effect of secure context High neutron fluence rate and neutron fluence rate rate of change height signal trigger reactor sudden closure.

The required scope measured of RPN system is 10 from rated power^-9Until rated power 200%.When nuclear power station is properly functioning, the power state transition of reactor is become voltage signal, I.e. stop 0 power correspondence 0V, the corresponding 5V of full power 100%, and this voltage signal is sent It is monitored and computing action to rear end instrument and meter.

During overhauling, how to simulate magnitude of voltage and the variation tendency of this power operating states, right Just seem abnormal important in the nuclear power station test in turn(a)round.

Utility model content

In view of this, main purpose of the present utility model is, it is provided that a kind of ramp signal occurs Device, including:

Human-computer interaction module, for receiving the attribute of ramp signal, including slope, propradation, Decline state, higher limit, lower limit and holding instruction；

Central processing module, is connected with described human-computer interaction module, for the genus to ramp signal Property resolves, and controls connected ramp voltage output module and carry out the electricity of ramp signal Pressure output；

Power module, for above-mentioned each module for power supply.

By upper, it is achieved receiving the ramp signal that operator are inputted, this ramp signal can be Rise, decline and horizontal voltage signal, during overhauling at nuclear power station, simulate reaction power The magnitude of voltage of running status and variation tendency.

Optionally, described human-computer interaction module includes film key and display module, described display Module shows the content that described film key is inputted in real time.

Optionally, described human-computer interaction module includes also including electrostatic protection module, thin with described Film is by bonded.

By upper, it is achieved prevent the infringement to circuit devcie such as static electricity on human body.

Optionally, also include operation judges module, be connected with described film key, be used for detecting Whether film key is misused.

By upper, it is achieved avoid receiving user's maloperation by human-computer interaction module.Can reach To time consumption in allowed band, the interference brought in shielding environment, farthest reduces The number of times of button flase drop, more effectively detects key-press status.

Optionally, between described central processing module and described ramp voltage output module, also Including signal smoothing processing module, it is used for revising central processing module to ramp voltage output module The step-length of output data.

By upper, by setting suitable step-length, so that the voltage of output smooths.

Optionally, described power module includes:

Battery；

First Unisolated switch power supply, is connected with described battery, is used for exporting 12V supply voltage；

Isolating switch power, is connected with described first Unisolated switch power supply, is used for exporting 5V Supply voltage；

Second Unisolated switch power supply, is connected with described battery, is used for exporting 3.3V and powers electricity Pressure.

Optionally, also include:

Operational amplifier, is connected with described ramp voltage output module, for ramp voltage is defeated Going out the 0～2.5V voltage amplification that module exported is 0～10V；

1K Ω divider resistance, is connected with described operational amplifier；

10K Ω divider resistance, is connected with described operational amplifier.

By upper, by the output of different magnitudes of voltage, meet wanting of the on-the-spot many instrumentation taps of nuclear power station Ask.

Optionally, also include:

Alarm module；

Described central processing module is additionally operable to the genus of ramp signal received to human-computer interaction module Property carry out reasonability judgement, control alarm module according to judged result and report to the police.

By upper, it is achieved the correctness for inputted data is verified.

Accompanying drawing explanation

Fig. 1 is the principle schematic of this utility model device；

Fig. 2 is the schematic diagram of film key；

Fig. 3 is the chip pin figure of central processing module；

Fig. 4 is the minimum system circuit theory schematic diagram of central processing module；

Fig. 5 is the inside schematic diagram of AD5420 chip in current output module；

Fig. 6 is the circuit theory schematic diagram of current output module；

Fig. 7 is the inside schematic diagram of AD5683 chip in ramp voltage output module；

Fig. 8 is the circuit theory schematic diagram of ramp voltage output module；

Fig. 9 is the circuit theory schematic diagram of power module；

Figure 10 (A) is the front view of this utility model device；

Figure 10 (B) is the rearview of this utility model device.

In Fig. 1,4,6,8,9, solid line represents that signal transmits, and dotted line represents electrical transfer.

Detailed description of the invention

For the defect overcoming prior art to exist, this utility model provides a kind of ramp signal and sends out Generating apparatus, it is achieved by operator control export ramp signal, this ramp signal can be rising, Decline and horizontal voltage signal, during overhauling at nuclear power station, simulate reaction power and run shape The magnitude of voltage of state and variation tendency.

As it is shown in figure 1, this device includes central processing module 10, and the most connected Human-computer interaction module 20, current output module 30, ramp voltage output module 40, power supply mould Block 50 and alarm module 60.Described central processing module 10, current output module 30, oblique wave Voltage output module 40 and alarm module 60 solderable with pcb board on.

Human-computer interaction module 20 includes operating button and display module, wherein, operates button For setting the attribute of ramp signal, including setting the slope of oblique wave, propradation, decline shape State, higher limit, lower limit and holding function.Display module is current set for display in real time Value.

Described display module selects the liquid crystal display of 12864 types, the 12864 of band Chinese word library Being that one has 4/8 parallel-by-bits, 2 lines or 3 line serial multiple interfaces modes, inside is contained GB one-level, the dot-matrix lcd module of two grades of simplified form of Chinese Character character libraries；It shows resolution Rate is 128 × 64, built-in 8192 16*16 point Chinese characters and 128 16*8 point ASCII words Symbol collection.Utilize this display module interface mode flexibly and operational order simply and easily, can Constitute full Chinese man-machine interaction graphical interfaces.The Chinese character of 8 × 4 row 16 × 16 dot matrix can be shown, Also can complete figure to show.

As in figure 2 it is shown, operation button is realized by film key switch, film key switch comes Realize function.Described thin film, by strong (Metal dome array), is that the PET of one piece of contact-carrying is thin Sheet (includes metal clips), is used on the wiring boards such as PCB, FPC and uses as switch.With Traditional silica gel push-button is compared, and film key has more preferable feel, longer life-span.Thin film Conducting position (the golden hands being predominantly located on wiring board being positioned on pcb board by the contact on strong Above finger), when button is by pressed by external force, the central point of contact is recessed, touches PCB On circuit, thus form loop, electric current passes through, and whole product is the most normally worked.

Film key is all the basic structure of " button+thin film ", so, the feel side of button The design of film key is depended in face.In view of separation and the reliability of resilience of switch contact, It is optimal that the thickness of thin film is typically chosen in 0.125-0.2mm, and thin resilience excessively is unable, and contact is divided From insensitive.Blocked up bradykinesia increases operating force.Key body uses square button or round key Press, when catercorner length or diameter are more than 12mm, select the thin film of 0.15 or 0.2 millimeters thick. Thin film is the thickest, and bounce-back is strong, and the key body tendency through repeatedly pressing rear film lax is less, thus protects The normal work of card contact.When sealing coat is the thinnest, circuit substrate film thickness should want thick, mistake Easily there is the most logical of contact in thin thin film.Plane button allows to select a little bit thicker thin film Material, and the thin film serving as circuit contact bubbling the most preferably uses the thin film of 0.125 millimeters thick, In the case of only bubbling sphere diameter is big, the action of top dome is less, the most preferably use thicker thin Film.Film key is composition structure indispensable in electronic key product, it be metallic spring by Key product and the built-in conducting film of conductive rubber key product.The structure of film key is very simple, After directly the button lid of contact, keycap being taken off it can be seen that thin flm circuit below button and Circuit board.

Button includes " rising ", " decline ", " holding " of functional area, also includes parameter adjustment " increasing ", " reduction ", " the moving to left " in region, " moving to right ".

After system electrification, display module i.e. lights, the initial default value of system display oblique wave, example Such as slope 120mV/s, higher limit 6V (corresponding 120%FP core power), lower limit 0.000V.

When setting slope, receive user and press " moving to left " or " moving to right " button, often by next time " move to left " button, the cursor left shown by display module one, often press " moving to right " button one Secondary, the cursor right shown by display module one；Secondly, receive user press " increasing " or " reducing " button and increase or reduce the numerical value of corresponding positions, what the slope value revised can be real-time is aobvious Show on display module.

When higher limit and lower limit set, receive user and press " moving to left " or " moving to right " button with really Determine the corresponding positions of higher limit or lower limit, then receive " increasing " or " reduction " key and revise the upper limit The current selected position of value, its detailed process is identical with slope setting.

Rising value setting can be carried out after completing to set slope value, higher limit and lower limit, connect Receive user and press " rising " button in function setting regions, then receive rising ramp signal and refer to Order, in order at follow-up output corresponding rising ramp signal, specifically will describe in detail later.

In like manner, press " decline " button, then receive decline ramp signal instruction, in order to rear Continuous output declines ramp signal accordingly.

It addition, at any time, when receiving " holding " button that user is pressed, then keep Currency output level voltage signal.Holding currency can be set defeated in process of rising or falling Go out, press holding button and can enter holding function, output current voltage current value and holding not Become.Specifically will describe in detail later.

It is also preferred that the left human-computer interaction module 20 also includes electrostatic protection module, with described each is thin Film is by bonded, to prevent static electricity on human body etc. to circuit board or the infringement of chip device.This enforcement In example, described electrostatic protection module uses ESD to protect chip, to fill whole utility model Put and carry out electrostatic protection.

It addition, described human-computer interaction module 20 also includes maloperation judge module (not shown), It is connected with each film key described respectively, is used for detecting whether each film key is grasped by mistake Make.The input state of described maloperation judge module continuous collecting film key is thin when detecting After film key-press status changes between (such as level changes), first time delay certain time Every T1, then to carry out key-press status collection, continuous acquisition n times every set time T2, incite somebody to action This n times sampled value carries out "AND" logical operations, if operation result is identical, the state that is considered as changes. Consider that user presses and unclamp the ageing of button when operating button, key jitter resilience and Interference noise etc. in environment, T1, T2 and N select values below time: T1=15mS, T2=10mS, N=3.Based on this, can reach time consumption in allowed band, that brings in shielding environment is dry Disturb, farthest reduce the number of times of button flase drop, more effectively detect key-press status.

Central processing module 10 is connected with described human-computer interaction module 20, for passing through user Human-computer interaction module 20 sets the attribute of ramp signal and resolves, and parses conversion digital quantity, To control current output module 30, ramp voltage output module 40 carries out current value, magnitude of voltage Output, and control display module 60 show.Such as, central processing module 10 recipient The attributes such as the slope set by machine interactive module 20, homographic solution separates out corresponding the turning of above-mentioned attribute Change digital quantity, by above-mentioned conversion digital output to ramp voltage output module 40, then oblique wave electricity Above-mentioned conversion digital quantity is converted to magnitude of voltage and exports by pressure output module 40.Corresponding, electricity The current value that stream output module 30 is exported and described ramp voltage output module 40 are exported Magnitude of voltage is corresponding.

It should be noted that described central processing module 10 also needs the conjunction to the attribute after resolving Rationality judges.That is, in central processing module 10, prestore the safety value of each data Scope, when parsing user by the numerical value set by human-computer interaction module 20 in described safety Time beyond value scope, control alarm module 60 and report to the police.

It addition, central processing module 10 also need to detect for the logic that user is inputted, When there is logical error, the same alarm module 60 that controls is reported to the police.Described logical error Include but not limited to: higher limit is less than lower limit, does not sets slope.

Described alarm module 60 includes buzzer and LED lamp bar, by drive circuit with described Central processing module 10 connects, and owing to it uses available circuit to be attached, repeats no more.

As it is shown on figure 3, in the present embodiment, described central processing module 10 selects MSP430 Type chip microcontroller.MSP430 single-chip microcomputer also has the following characteristics that

Disposal ability is strong: MSP430 series monolithic is the single-chip microcomputer of 16, have employed Reduced Instruction Set Computer Architecture, has abundant addressing system (7 kinds of source operand addressing, 4 kinds of mesh Operand addressing), 27 succinct core instructions and substantial amounts of dummy instruction；It is posted In storage and sheet, data storage all can participate in multiple computing；Process of tabling look-up efficiently is also had to refer to Order.These features ensure that and can develop high efficiency source program.

Fast operation: MSP430 series monolithic can under the driving of 25MHz crystal, Realize the instruction cycle of 40ns.The data width of 16, the instruction cycle of 40ns and many merits The hardware multiplier of energy matches, and can realize some algorithm of Digital Signal Processing.

Super low-power consumption: first, the supply voltage of MSP430 series monolithic uses 1.8-3.6V voltage.Thus when it can be made to run under the Clock of 1MHz, the electricity of chip Flowing minimum 165 μ about A, the lowest power consumption under RAM holding pattern is 0.1 μ A.Secondly, In MSP430 series, have different clock systems: fundamental clock system, FLL (FLL and FLL+) clock system and DCO digital oscillator clock system.Can only use a crystal Agitator, it is possible to use two crystal oscillators.By system clock system produce CPU and Clock needed for each function.And these clocks can open and close under the control of instruction, Thus realize the control to overall power consumption.

Aboundresources in sheet: each series of MSP430 series monolithic is all integrated with more rich Peripheral hardware in sheet.Be respectively house dog, analog comparater A, intervalometer, UART, SPI, I2C, Hardware multiplier, liquid crystal driver, 10/12 ADC, 16 sigma-delta ADC, DMA, I/O port, basic intervalometer, real-time clock and USB controller.It addition, MSP430 system The interrupt source of row single-chip microcomputer is more, can be arbitrarily nested, flexibly and easily.

The development environment of convenience and high-efficiency: MSP430 series have OTP type, FLASH type and The device of ROM type three types, the development tool of these devices is different.MSP430 series Shown in the minimum system structured flowchart as accompanying drawing 4 of single-chip microcomputer.

Current output module 30, is connected with described central processing module 10, is used for reacting institute defeated Enter the current value of ramp signal, to simulate current signal during power test, and output it To current terminal.

Current signal output area is 0-20mA, with ramp voltage output module 40 described hereinafter The 0-10VDC voltage signal exported is the most corresponding.As it is shown in figure 5, in the present embodiment, 16 the D/A converter AD5420, AD5420 that have selected AD company are low cost, essence 12/16 close, fully-integrated bit pad, it is provided that programmable current source exports.Such as Fig. 6 institute Being shown as the circuit theory diagrams of current output module 30, output current scope is able to programme is set to 4 MA to 20mA, 0mA to 20mA or 0mA to 24mA outrange.This device Part uses the power supply of 10.8V to 60V to power, and in the present embodiment, uses 12V to power.Spirit The serial line interface lived is SPI, MICROWIRE^TM、QSPI^TMWith DSP compatibility interface, can At three-wire type MODE of operation.This device also comprises one and guarantees that device powers under known state Electrification reset function, and one output is set as selected current range low side asynchronous clearly Zero pin.Total non-alignment error representative value is ± 0.01%FSR.

Ramp voltage output module 40, is connected with described central processing module 10, is used for reacting The magnitude of voltage of inputted ramp signal, to simulate voltage signal during power test, it is defeated Go out to voltage terminal.

Ramp voltage range of signal is 0-10VDC.As it is shown in fig. 7, the present embodiment selects AD 16 D/A converter AD5683 of company, AD5683 belongs toSeries, Low-power consumption, single channel, 16 bit buffering voltage output DAC.Output area is able to programme to be set to 0V～VREF or 0V～2*VREF.2.7V to 5.5V single supply is used to power.There is provided 2.00 Mm*2.00mm, 8 pin LFCSP or 10 pin MSOP encapsulation.

As shown in Figure 8, ramp voltage output module 40 internal circuit realize on, by Centre processing module 10 controls the low-voltage of AD5683 chip output 0～2.5V, then through computing Amplifier is exportable corresponding magnitude of voltage after carrying out 4 times of amplifications, is i.e. enlarged into 0～10V, root The driving force exported according to onsite application situation and amplifier, voltage output requires connect load impedance It is not less than 500 Ω, otherwise can electric current be excessive causes amplifier excessive heating to damage or defeated because of output Go out not reach setting numerical value.

Simultaneously in order to meet the requirement of the on-the-spot many instrumentation taps of nuclear power station, at output 0-10V voltage While signal, use the mode of electric resistance partial pressure, concatenate two resistance, two electricity at outfan Resistance is respectively 1K Ω and 10K Ω, thus can get two output signals, and a road is 0-10V Voltage signal, an other road is 0-1V voltage signal.

It is also preferred that the left between described central processing module 10 and ramp voltage output module 40, Be additionally provided with signal smoothing processing module (not shown), for by update by the way of step-length to by The conversion digital quantity that central processing module 10 exports to ramp voltage output module 40 smooths Process.

After process, what ramp voltage output module 40 issued by single-chip microcomputer changes digital quantity into N,

N=N₀+ Δ N=N₀+T*ΔN₀=N₀+T*((S*10^-3)/10*2¹⁶), V in formula₀Represent oblique wave The magnitude of voltage that voltage output module 40 initially exports；H represents higher limit；S represents slope；N₀ Represent the magnitude of voltage V of initially output₀Corresponding conversion digital quantity, N₀=(V₀/10)*2¹⁶；ΔN₀ Represent that the renewal changed each second calculated according to slope S is elongated, Δ N₀=(S*10^-3)/10*2¹⁶； T represents the renewal time interval of setting, T=6mS；Δ N represents that actual correspondence T time is spaced institute The step-length updated, Δ N=T* Δ N₀,

Thus, it is possible to realize the smooth linear that output ramp signal is enough.

It is also preferred that the left also include a filter capacitor (not shown), export mould with described ramp voltage Block 40 connects, so that output voltage signal further smooths linearly, meets actual output voltage The linear change state of signal.

It addition, also include dynamic monitoring module (not shown), it is connected to described central authorities and processes mould Between block 10 and described ramp voltage output module 40, for dynamic monitoring Contemporary Digital amount with Higher limit or the magnitude relationship of lower limit correspondence digital quantity, if Contemporary Digital amount exceedes the upper limit Value, does not the most retransmit Contemporary Digital amount, and directly transmits higher limit correspondence digital quantity to oblique wave electricity Pressure output module 40, and keep the output of this higher limit constant.If Contemporary Digital amount is less than lower limit Value, then directly transmit lower limit correspondence digital quantity to ramp voltage output module 40, and keep under this Limit value output is constant.

Power module 50 is for powering to whole system.

Outside offer is not less than the straight of 5V (in the present embodiment, using 5 joint 1.5V aneroid battery) Stream power supply, this DC source is through internal transformation and stablizes, the power supply that output two-way is separate.

The first via, through the first Unisolated switch power supply, exports stable 12V voltage.This 12V Operational amplifier in voltage supply ramp voltage output module 40, this 12V voltage is more simultaneously Obtain the 5V supply voltage of stable isolation through isolating switch power, this power supply voltage supplying shows Show module, it is to avoid the voltage of whole system is impacted by the high power consumption stream of display module.Described The chip that first Unisolated switch uses model to be LMR62014 realizes.Described keep apart powered-down Source is realized by the chip that model is DCR011205U.

Second tunnel, after the second Unisolated switch power supply voltage stabilizing, exports 3.3V voltage, to whole Individual numerical control system is powered.Described second Unisolated switch power supply employing model is The chip of TPS62177 realizes, and this chip input supply voltage wide ranges, output ripple is low.

As shown in Figure 10 (A), (B), above-mentioned each parts are packaged in the rectangular box of plastic material Internal, in box body front upper perforate, LCD MODULE is installed, in box body positive basifacial perforate Film key and on and off switch are installed, at box body top drilling, output ramp voltage interface end are installed Son, the back side perforate at box body is installed self-contained battery box, is finally added cartridge screw at tray interior solid Determine hole to install fixing pcb board.Film key in human-computer interaction module 20 and display module Being connected with pcb board without the cable that chlorine is fire-retardant by the low cigarette of interior welds, output is 10V to the maximum D. c. voltage signal, it is contemplated that output voltage signal is little and onsite application to be taken into account and wiring side Just, having selected the 4MM wiring hole of standard, this wiring hole can facilitate access standard with each Planting cable plug, exterior insulation protects simultaneously, and wire contacts point is all at terminal inner, no When there will be wiring, hands touches interference or brings the unsafe factors such as electric shock.

The foregoing is only preferred embodiment of the present utility model, not in order to limit this reality With novel.In a word, all within spirit of the present utility model and principle, any amendment of being made, Equivalent, improvement etc., within should be included in protection domain of the present utility model.

Claims (8)

1. a ramp signal generating means, it is characterised in that including:

Human-computer interaction module, for receiving the attribute of ramp signal, including slope, propradation, Decline state, higher limit, lower limit and holding instruction；

Central processing module, is connected with described human-computer interaction module, for the genus to ramp signal Property resolves, and controls connected ramp voltage output module and carry out the electricity of ramp signal Pressure output；

Power module, for above-mentioned each module for power supply.

Device the most according to claim 1, it is characterised in that described man-machine interaction mould Block includes that film key and display module, described display module show described film key institute in real time The content of input.

Device the most according to claim 2, it is characterised in that described man-machine interaction mould Block includes also including electrostatic protection module, is connected with described film key.

Device the most according to claim 2, it is characterised in that also include operation judges Module, is connected with described film key, is used for detecting whether film key is misused.

Device the most according to claim 1, it is characterised in that process in described central authorities Between module and described ramp voltage output module, also include signal smoothing processing module, be used for Revise the central processing module step-length to ramp voltage output module output data.

Device the most according to claim 1, it is characterised in that described power module bag Include:

Battery；

First Unisolated switch power supply, is connected with described battery, is used for exporting 12V supply voltage；

Isolating switch power, is connected with described first Unisolated switch power supply, is used for exporting 5V Supply voltage；

Second Unisolated switch power supply, is connected with described battery, is used for exporting 3.3V and powers electricity Pressure.

Device the most according to claim 1, it is characterised in that also include:

Operational amplifier, is connected with described ramp voltage output module, for ramp voltage is defeated Going out the 0～2.5V voltage amplification that module exported is 0～10V；

1K Ω divider resistance, is connected with described operational amplifier；

10K Ω divider resistance, is connected with described operational amplifier.

Device the most according to claim 1, it is characterised in that also include:

Alarm module；

Described central processing module is additionally operable to the genus of ramp signal received to human-computer interaction module Property carry out reasonability judgement, control alarm module according to judged result and report to the police.