CN101082639B - Standard pulse generator capable of simulating pulse measurement meter used by user - Google Patents
Standard pulse generator capable of simulating pulse measurement meter used by user Download PDFInfo
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- CN101082639B CN101082639B CN2007100762984A CN200710076298A CN101082639B CN 101082639 B CN101082639 B CN 101082639B CN 2007100762984 A CN2007100762984 A CN 2007100762984A CN 200710076298 A CN200710076298 A CN 200710076298A CN 101082639 B CN101082639 B CN 101082639B
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Abstract
The invention discloses a standard pulse generator to analog user pulse metering list to connect data collector based on pulse gathering technique, which comprises the following parts: MCU, LCD screen, keyboard, I-to-O port expanding circuit, rapid light coupling relay to switch two output resistant signals, analog pulse happening circuit to provide resistant network of two output resistances to output analog pulse signal. The invention can send sampling period and non-source pulse signal with different duty cycles continuously and timely or quantitatively and analogs the short-cut of pulse metering list, which satisfies the testing need of national standard GB/T 20866-2007 'data collector based on user pulse metering list'. The invention can test the metering property under experiment oron-site environment for data collector effectively, which solves the metering accuracy to test the data collector.
Description
Technical field
The present invention relates to the detection and the checking of the nucleus equipment data acquisition unit of Automatic meter reading system, especially relate to a kind of basic pulse generator of simulating the family with the pulsimeter scale.
Background technology
Be widely used in as the main nucleus equipment of Automatic meter reading system based on the data acquisition unit of pulse collection technology the automatic data logging toll administration is being carried out with gauging table in the family, becoming the main flow of the industry of checking meter gradually.Yet the basic pulse generator of pulse is sent with the pulsimeter scale in the simulated family of still not having at present both at home and abroad similar special use, cause can't verification msg collector image data accuracy.
Summary of the invention
Technical matters to be solved by this invention is the defective that remedies above-mentioned existing analogue measurement technology, proposes a kind of basic pulse generator of simulating the family with the pulsimeter scale.
Technical matters of the present invention is solved by the following technical programs.
This basic pulse generator of simulating the family with the pulsimeter scale, be connected with data acquisition unit based on the pulse collection technology, but comprise MCU and connected respectively operation display interface and various parameters LCD display, be used to be provided with and adjust various parameters keyboard, be used for the I/O port expansion circuit of inputoutput data.
This family of simulating with the characteristics of the basic pulse generator of pulsimeter scale is:
Be provided with and comprise the analog pulse generation circuit that is used to switch the rapid light coupling relay of two kinds of output resistance signals and the resistor network of two kinds of output resistances is provided, output analog pulse signal;
Each resistance parameter of described analog pulse generation circuit: R8, R9, R10 are 3K Ω, and R12 is 22K Ω, and R15 is 2K Ω.
Technical matters of the present invention is solved by following further technical scheme.
Also be provided with electromagnetic compatibility protection buffer circuit; described electromagnetic compatibility protection buffer circuit is arranged between rapid light coupling relay output terminal and the pulse producer output terminal; can be to transient state excess current effects of releasing such as thunder and lightning, static and burst of pulses; and can play inhibiting effect to superpotential; when carrying out electromagnetic compatibility test, prevent electromagnetic interference effect pulse simulation generator operate as normal.
Described electromagnetic compatibility holding circuit comprise voltage dependent resistor (VDR) RV, transient voltage suppress diode often be called anti-thunder tube TVS, with moment overcurrent the discharge tube TED and the electrostatic protection device PJLC that release.
The beneficial effect that the present invention is compared with the prior art is:
The present invention can simulate dwelling house and industry and commerce user pulse teletransmission gauging table signal, can be continuously regularly or quantitatively send sampling period and the different passive pulse signal of dutycycle, but also the analog pulse gauging table open circuit, phenomenon of the failure such as short circuit, and the analog pulse gauging table satisfies the test request among standard GB/T 20866-2007 " based on the data acquisition unit of family with the pulsimeter scale " at the disturbing pulse signal that vibration, water hammer etc. send.Can under experiment or site environment, carry out Validity Test, solve the metering accuracy problem of verification msg collector the metering performance of data collector.
Description of drawings
Fig. 1 is the mimic pulse generator system construction drawing;
Fig. 2 is one tunnel analog pulse generation circuit;
Fig. 3 is one tunnel an electromagnetic compatibility holding circuit wherein;
Fig. 4 is the workflow diagram of mimic pulse generator system.
Embodiment
The full sized pules output signal effective impulse width that this embodiment maximum can be simulated output ten six road pulsimeter scales is 80ms, and there are 160ms, 500ms, four kinds of selections of 1s, 5s in the cycle;
Can select regularly to send the full sized pules signal, can select 1 hour, 5 hours, 10 hours, 24 hours, send five kinds of selections in real time; Can select 500,1000,10,000,100,000,250,000.
Can be chosen in and add the disturbing pulse signal in the full sized pules signal.
But analog pulse gauging table signal send open circuit, phenomenon of the failure such as short circuit;
Can select 220VAC or 24VDC power supply mode;
As shown in Figure 2, each resistance parameter of analog pulse generation circuit: R8, R9, R10 are 3K Ω, and R12 is 22K Ω, and R15 is 2K Ω.
Analog pulse generation circuit can be simulated family pulsimeter scale, continuously regularly or quantitatively send the cycle and the different effective impulse width of dutycycle is the passive pulse signal of 80ms.
Analog pulse generation circuit has tape jam and judges output function, MCU is according to setup parameter, switch by exterior I/O port expansion circuit control rapid light coupling relay, and according to the make-and-break time that the control rapid light coupling relay is set, control rapid light coupling relay convert resistance, the switching signal of two kinds of different resistances of output is exported with the pulse that the tape jam of analog pulse table tool is reported to the police.As SHORT1 and PULSE1 is low level, when OPEN1 is high level, analog pulse generation circuit output resistance is the switching signal of 24K; When the SHORT1 signal is low level, OPEN1 and PULSE1 when being high level, analog pulse generation circuit output resistance is the switching signal of 2K.Simultaneously MCU carries out timing or metering, when clocking value or variable reach when setting, stops output.
Described analog pulse generation circuit can simulate the family with the line short of pulsimeter scale, phenomenon of the failure such as open circuit.Analog pulse generation circuit also has not tape jam judgement output function, MCU is according to setup parameter, switch by exterior I/O port expansion circuit control rapid light coupling relay, and according to the make-and-break time that the control rapid light coupling relay is set, the control rapid light coupling relay is switched disconnected, short-circuit condition, output is disconnected, two kinds of signals of short circuit, exports with the pulse that the non-fault of analog pulse table tool is reported to the police.When the SHORT1 signal is high level, OPEN1 and PULSE1 when being low level, analog pulse generation circuit output resistance is zero, the output short-circuit signal; When SHORT1, OPEN1 and PULSE1 were low level, analog pulse generation circuit output resistance was infinitely great, the output chopping signal.Simultaneously MCU carries out timing or metering, when clocking value or variable reach when setting, stops output.
Described analog pulse generation circuit can be simulated the disturbing pulse signal that send at vibration, water hammer etc. with the pulsimeter scale at the family.MCU control rapid light coupling relay is sent the full sized pules signal, and simultaneously every 100ms control rapid light coupling relay is switched, and makes to be output as and the opposite state of current full sized pules level, reverts to the output of full sized pules signal behind the 10ms.
Described disturbing pulse is the undesired signal that the pulse sensor sends when owing to reason pointers such as vibration, water hammers shake taking place in the pulsimeter scale actual working environment, being defined as the pulse width that every 100ms produces at random is the square wave of 10ms, its state is opposite with current full sized pules level, and the impulse level amplitude is consistent with full sized pules.
Described analog pulse generation circuit can be realized the on-line measurement of laboratory and on-site data gathering device.In the laboratory or the scene, pulse simulation generator output interface is connected to the input interface of data acquisition unit with line, opening power, and can carry out on-line measurement after configuring correlation parameter.
The pulse simulation generator of this embodiment has 16 tunnel identical pulse generating circuits, can simulate output 16 tunnel pulse signals that taken place with the pulsimeter scale mutually.
The pulse simulation generator of this embodiment is at power supply; output channel; also satisfy the electromagnetic compatibility requirement in the enclosure designs; be provided with as shown in Figure 3 comprise voltage dependent resistor (VDR) RV; protection transient voltage absorption tube TVS; discharge tube TED; the electromagnetic compatibility protection buffer circuit of electrostatic protection device PJLC; be arranged between rapid light coupling relay output terminal and the pulse producer output terminal; can be to thunder and lightning; the effect of releasing of transient state such as static and burst of pulses excess current; and can play inhibiting effect to superpotential; when carrying out electromagnetic compatibility test, prevent electromagnetic interference effect pulse simulation generator operate as normal.
Can reach the effect of electrostatic prevention, anti-lightning strike surge, anti-burst of pulses, guarantee instrument operate as normal when being subjected to electromagnetic interference (EMI).Wherein the course of work of anti-lightning strike surge is as follows: when not having surging signal, discharge tube TED, anti-thunder tube TVS, voltage dependent resistor (VDR) RV are in off state, do not influence protected circuit in parallel with it.When the lightning surge signal adds fashionablely, voltage surpasses voltage dependent resistor (VDR) RV nominal value, and the electric current that flows through voltage dependent resistor (VDR) RV increases sharply, with the abnormal overvoltage that suppresses often to occur in the circuit.Increase along with the surging signal peak value, when instantaneous voltage surpassed discharge tube TED off state voltage, discharge tube TED produced avalanche effect, in case immediate current surpasses switching current, its voltage is promptly reduced to forward voltage, and a large amount of moment surge currents flows through discharge tube TED1, TED2 bypass extremely greatly.Behind lightning surge signal process isolation resistance R1, the R2; anti-thunder tube TVS stands transient energy when impacting can be as quick as thought reduces the impedance at its two ends; by energy absorption is fallen, thereby the signal potential of the voltage clamping between its two ends in nominal, with the protection posterior member.Through multi-stage protection, guaranteed the normal output of signal.
The workflow of mimic pulse generator system as shown in Figure 4.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to above-mentioned explanation.For the general technical staff of the technical field of the invention, basic thought of the present invention and method are made some simple deduction or replace, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of being submitted to.
Claims (1)
1. can simulate the basic pulse generator that the pulsimeter scale is used at the family for one kind, be connected with data acquisition unit based on the pulse collection technology, but comprise MCU and connected respectively operation display interface and various parameters LCD display, be used to be provided with and adjust various parameters keyboard, be used for the I/O port expansion circuit of inputoutput data, it is characterized in that:
Be provided with and comprise the analog pulse generation circuit that is used to switch the rapid light coupling relay of two kinds of output resistance signals and the resistor network of two kinds of output resistances is provided, output analog pulse signal;
Each resistance parameter of described analog pulse generation circuit: R8, R9, R10 are 3K Ω, and R12 is 22K Ω, and R15 is 2K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100762984A CN101082639B (en) | 2007-07-02 | 2007-07-02 | Standard pulse generator capable of simulating pulse measurement meter used by user |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100762984A CN101082639B (en) | 2007-07-02 | 2007-07-02 | Standard pulse generator capable of simulating pulse measurement meter used by user |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101082639A CN101082639A (en) | 2007-12-05 |
| CN101082639B true CN101082639B (en) | 2011-02-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007100762984A Expired - Fee Related CN101082639B (en) | 2007-07-02 | 2007-07-02 | Standard pulse generator capable of simulating pulse measurement meter used by user |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103096577B (en) * | 2012-10-29 | 2015-01-07 | 四川九洲电器集团有限责任公司 | DXM 512 lamp control device with functions of switchboard |
| US10411958B2 (en) * | 2014-09-08 | 2019-09-10 | Intel Corporation | Automatic device configuration |
| CN104316775B (en) * | 2014-10-29 | 2017-06-06 | 上海大学 | Pulse signal cycle and dutycycle method for continuous measuring |
| CN105978443B (en) * | 2016-05-06 | 2018-07-03 | 深圳市合信自动化技术有限公司 | A kind of servo-driver with busbar bleed-off circuit detection function |
| CN110266289A (en) * | 2018-11-22 | 2019-09-20 | 内蒙航天动力机械测试所 | Virtual pulse generator |
| CN110375599A (en) * | 2019-07-16 | 2019-10-25 | 广西中爆电子科技有限公司 | For the anti-radio frequency interference circuit in electric detonator |
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