CN104935309A - Pulse distribution system with high anti-interference capability, and distribution method therefor - Google Patents
Pulse distribution system with high anti-interference capability, and distribution method therefor Download PDFInfo
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- CN104935309A CN104935309A CN201410098772.3A CN201410098772A CN104935309A CN 104935309 A CN104935309 A CN 104935309A CN 201410098772 A CN201410098772 A CN 201410098772A CN 104935309 A CN104935309 A CN 104935309A
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Abstract
The invention discloses a pulse distribution system with a high anti-interference capability, and a distribution method therefor. The system comprises a power isolation and power supply module, an input module, a processing module, and an output module, wherein the power isolation and power supply module is connected with the input module, the processing module, and the output module. The power isolation and power supply module comprises a power supply and a power supply circuit, and the input module comprises a level matching circuit and an electrical isolation circuit. The processing module employs a complex programmable logic device chip circuit, and comprises a data sampling circuit, a data authenticity determination circuit, and a data transmitting circuit. The output module comprises an electrical isolation circuit and a level matching circuit. The method comprises the steps: pulse signal input, pulse level input conversion, input circuit isolation, data sampling, effective or ineffective data judgment, data transmission, output circuit isolation, output level matching, and signal input PLC. According to the invention, pulse distribution application is achieved under the complex conditions, and the anti-interference capability of a pulse distribution board is improved.
Description
Technical field
The present invention relates to a kind of pulse generator, relate to a kind of pulse distribution system and pulse allocating method specifically.
Background technology
No. 87106591st, the Chinese patent being " having the laser aid of high-voltage pulse generator and the method for generation of high-voltage pulse generator and pulse " in denomination of invention discloses a kind of laser aid having high-voltage pulse generator, pulse generator passes through transformer, by the electric energy from DC power supply, tank circuit is supplied in the mode that supply voltage is interrupted, supply voltage interrupted synchronous with the resonance cycle of tank circuit, its electric energy of supply stores in the mode of electric oscillation by tank circuit, when being stored in the electric energy in tank circuit and reaching setting numerical value, the saturable reactor be arranged between laser aid and tank circuit reaches capacity state, electric energy in tank circuit is discharged to laser aid.The core of this patented technology is for passing through transformer, by the electric energy from DC power supply, supply tank circuit in the mode that supply voltage is interrupted, supply voltage interrupted synchronous with the resonance cycle of tank circuit, the electric energy supplying it stores in the mode of electric oscillation by tank circuit.
In addition, the transformation pulse signals of current hot rolling three electric system is carried out allocation process and be there is a following difficult problem: need carrying out signal distribution to new system and original system respectively in new-old system parallel period.As shown in Figure 1, prior art adopts pulse distribution card to carry out signal distribution to new, original PLC system, but there are the following problems: unstable properties in actual use procedure at the scene, is often that pulse signal can not normally obtain; Distribute and snap past cause thermal damage; Easily by line-hit, cause counting incorrect.Therefore this distribution card and be not suitable for new, old system signal distribute.
Therefore, develop a kind of pulse distribution system and distribution method thereof, to ensure accuracy, greatly the raising antijamming capability of pulse distribution and to greatly reduce device heating amount, reduction manufacturing cost, become the problem that the industry is badly in need of solving.
Summary of the invention
The object of the present invention is to provide a kind of pulse distribution system and the distribution method thereof with high anti-jamming capacity, realizing pulse distribution application under complex working condition, improve pulse distribution plate antijamming capability and reduce caloric value, improve the life-span and reduce manufacturing cost.
A kind of pulse distribution system with high anti-jamming capacity is provided according to an aspect of the present invention, comprise: isolated from power and supply module, input module, processing module, output module, described isolated from power and supply module are connected described input module, processing module, output module respectively; Described isolated from power and supply module comprise power supply and power supply circuits, described input module comprises level matching circuit and electrical isolation circuit, described processing module adopts complex programmable logic device (Complex Programmable Logic Device, CPLD) chip circuit, include data sampling circuit, data genuine/counterfeit discriminating circuit, data transmit circuit, described output module comprises electrical isolation circuit, level matching circuit.
Described electrical isolation circuit comprises multiple isolating chips of the isolation of all circuit powers and the control of sensor power isolated from power.
Described level matching circuit comprises light-coupled isolation chip.
Comprise at multiple isolating chips of output isolation circuit: DC/DC isolating chip, the three pieces of DC/DC isolating chips be integrated on a pulse distribution card, with completely isolated by carrying out between each pulse transducer power supply, pulse transducer power supply and distribution plate power supply, each pulse transducer pulse signal power supply, avoid interference each other.
Level matching circuit is according to following formulae discovery:
Wherein:
V
c: sampled level (V);
V
o: PLG power supply (V);
R
l: PLG load resistance (Ω);
R
1, R
3, R
5: Signal level assignment resistance (Ω).
A kind of pulse allocating method of high anti-jamming capacity is provided according to a further aspect of the invention, by the above-mentioned pulse distribution System Implementation with high anti-jamming capacity, described pulse distribution system comprises isolated from power and supply module, includes the input module of level matching circuit and electrical isolation circuit, includes data sampling circuit, the processing module of data genuine/counterfeit discriminating circuit, data transmit circuit, include the output module of electrical isolation circuit, level matching circuit, and this pulse allocating method comprises:
Pulse signal inputs: inputted by pulse transducer signal by input module;
Impulse level input conversion: complete the sampling of pulse signal, filtering, waveform shaping and light-coupled isolation by level matching circuit, process use further for subsequent conditioning circuit;
Input circuit is isolated: completely isolated by carrying out between each pulse transducer power supply, pulse transducer power supply and distribution plate power supply, each pulse transducer pulse signal power supply respectively by multiple isolating chips of electrical isolation circuit, to avoid interference each other;
Data sampling (frequency, number of times): the frequency being determined different pulse signal acquisition by data sampling circuit, is determined, to current pulse signal acquisition the number of times adopted simultaneously;
Effective or invalid data judges: judged adopting the validity of data by data genuine/counterfeit discriminating circuit, when being judged as invalid data, system is deleted automatically; When judging effective, carry out next step;
Data send: by data transmit circuit, effective pulse signal is sent to next step;
Output circuit is isolated: completely isolated by carrying out between each pulse transducer power supply, pulse transducer power supply and distribution plate power supply, each pulse transducer pulse signal power supply respectively by multiple isolating chips of electrical isolation circuit, to avoid interference each other;
Output level mates: by the light-coupled isolation chip of level matching circuit to the output of pulse signal level match for the treatment of circuit, to improve the antijamming capability of output signal to PLC section further;
Signal input programmable logic controller (PLC) (PLC): the signal through light-coupled isolation delivers to PLC system reception by difference channel again.
The invention has the beneficial effects as follows: be applicable to complex working condition application, improve the accuracy of pulse distribution function, improve interference judgement and disposal ability, improve antijamming capability, greatly reduce device heating amount and reduce manufacturing cost;
Accompanying drawing explanation
Fig. 1 is the pulse distribution card connection diagram of prior art;
Fig. 2 is that conventional sensors is powered wiring schematic diagram;
Fig. 3 is the system schematic with the pulse distribution system of high anti-jamming capacity of one embodiment of the invention;
Fig. 4 is the completely isolated DC/DC power supply diagram in Fig. 3 embodiment;
Fig. 5 is the level matching circuit figure in Fig. 3 embodiment;
Fig. 6 is the CPLD circuit figure in Fig. 3 embodiment;
Fig. 7 is pulse distribution card CPLD software control process oscillogram;
Fig. 8 is the output circuit figure in Fig. 3 embodiment;
Fig. 9 is control flow chart of the present invention;
Figure 10 is the flow chart with the pulse allocating method of high anti-jamming capacity of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is elaborated.First it should be noted that, the present invention is not limited to following embodiment, and the spirit that those skilled in the art should embody from following execution mode is to understand the present invention, and each technical term can do the most wide in range understanding based on Spirit Essence of the present invention.In figure, same or analogous component uses the same reference numerals to represent.
As shown in Figure 3, the pulse distribution system with high anti-jamming capacity of one embodiment of the invention, comprise: isolated from power and supply module, input module, processing module, output module, described isolated from power and supply module are connected described input module, processing module, output module respectively; Described isolated from power and supply module comprise power supply and power supply circuits, described input module comprises level matching circuit and electrical isolation circuit, described processing module adopts complex programmable logic device (Complex Programmable LogicDevice, CPLD) chip circuit, include data sampling circuit, data genuine/counterfeit discriminating circuit, data transmit circuit, described output module comprises electrical isolation circuit, level matching circuit.
Electrical isolation circuit comprises multiple isolating chips of the isolation of all circuit powers and the control of sensor power isolated from power, such as three isolating chips 1a, 1b, 1c, in the present embodiment, as shown in Fig. 4, Fig. 8, DC/DC isolating chip 1a, 1b, 1c adopt chip B2405, at pulse distribution card integrated three DC/DC isolating chips 1a, 1b, 1c, completely isolated by carry out between each pulse transducer power supply, pulse transducer power supply and distribution plate power supply, each pulse transducer pulse signal power supply like this, serve the interference avoided each other.
Level matching circuit, as shown in Figure 5, comprises light-coupled isolation chip 2, in the present embodiment, adopts chip I SO7220, its operating voltage 5V, consumes 1mA electric current, complete conventional filtering and level translation function to meet super low-power consumption.
As shown in Figure 10, the pulse allocating method with high anti-jamming capacity of the present invention, by the pulse distribution System Implementation of above-mentioned high anti-jamming capacity, this pulse allocating method comprises:
Pulse signal inputs: inputted by pulse transducer signal by input module;
Impulse level input conversion; Complete the sampling of pulse signal, filtering, waveform shaping and light-coupled isolation by level matching circuit, process use further for subsequent conditioning circuit;
Input circuit is isolated: completely isolated by carrying out between each pulse transducer power supply, pulse transducer power supply and distribution plate power supply, each pulse transducer pulse signal power supply by multiple isolating chips of electrical isolation circuit, to avoid interference each other;
Data sampling (frequency, number of times): channel and the cycle of being determined different pulse signal acquisition by data sampling circuit, is determined, to current pulse signal acquisition the number of times adopted simultaneously;
Data judge (effective or invalid): judged adopting the validity of data by data genuine/counterfeit discriminating circuit, when being judged as invalid data, system is deleted automatically; When judging effective, carry out next step;
Data send: by data transmit circuit, effective pulse signal is sent to next step;
Output circuit is isolated: completely isolated by carrying out between each pulse transducer power supply, pulse transducer power supply and distribution plate power supply, each pulse transducer pulse signal power supply by multiple isolating chips of electrical isolation circuit, to avoid interference each other;
Output level mates: by the light-coupled isolation chip of level matching circuit to the output of pulse signal level match for the treatment of circuit, to improve the antijamming capability of output signal to PLC section further;
Signal input PLC: the signal through light-coupled isolation delivers to PLC system reception by difference channel again.
The detailed content of such scheme of the present invention is illustrated, so that clearer feature of the present invention and beneficial effect below in conjunction with each circuit diagram.
As shown in Figure 3, Figure 4, isolated from power and supply module are primarily of power supply and power supply circuits composition.As shown in Fig. 3, Fig. 5, input module is made up of electrical isolation circuit, level matching circuit, wherein in the process of electrical isolation, have employed the isolation of all circuit powers and the control of sensor power isolated from power, in the present embodiment, adopt DC/DC isolating chip 1a, 1b, 1c, chip B2405 as shown in Figure 4; At integrated three the DC/DC isolating chips of pulse distribution card, completely isolated by carry out between each pulse transducer power supply, pulse transducer power supply and distribution plate power supply, each pulse transducer pulse signal power supply like this, serve the interference avoided each other, and in level matching circuit, have employed light-coupled isolation chip I SO7220, its operating voltage 5V, consumes 1mA electric current, completes conventional filtering and level translation function to meet super low-power consumption; As shown in Fig. 3, Fig. 6, processing module is made up of data sampling circuit, data genuine/counterfeit discriminating circuit, data transmit circuit, on the basis to input circuit filtering, follow-up further employing software carries out diagnosis to each pulse validity and judges, idler Pulse is carried out examination blocking-up by a kind of effectively control, thus improve the accuracy of step-by-step counting further, greatly improve the antijamming capability worked under complex working condition.The realization of software systems of the present invention adopts hardware and software technology, namely current state-of-the-art CPLD chip 3 is adopted, software process be solidificated in CPLD circuit, thus improve the accuracy of step-by-step counting further, CPLD chip adopts EMP7064 chip in the present embodiment.The layout of output module as shown in Figure 8, output module is improve the antijamming capability of output signal to PLC section further, have employed electrical isolation circuit, level matching circuit equally, adopt chip I SO7220, DS1692 in the present embodiment, while this method for designing improves antijamming capability, enhance signal long-distance transmissions ability.
Being described as follows of interlock circuit:
Electrical isolation a: system often has multiple pulse transducer, as shown in Figure 2, conventional circuit design adopts same power supply to power to these pulse transducers, between multiple like this transducer device and transducer together between easily form interference each other.。The present invention adopts all circuit powers to isolate and sensor power isolated from power technological means, as shown in Figure 4, adopt DC/DC isolating chip B2405, integrated three the DC/DC isolating chips of pulse distribution card, completely isolated by carry out between each pulse transducer power supply, pulse transducer power supply and distribution plate power supply, each pulse transducer pulse signal power supply like this, from the interference that electrical design is avoided each other.
Level match: level matching circuit mainly completes the sampling of pulse signal, filtering, waveform shaping and light-coupled isolation, processes further for subsequent conditioning circuit.Match circuit is calculated as follows: (a road impulse sampling level match calculates)
In formula:
V
c: sampled level (V);
V
o: PLG power supply (V);
R
l: PLG load resistance (Ω);
R
1, R
3, R
5: Signal level assignment resistance (Ω).
Light-coupled isolation chip I SO7220 operating voltage 5V, consumes 1mA electric current.Level matching circuit feature is super low-power consumption, completes conventional filtering and level translation function.
CPLD process: the hardware capacitance-resistance filter of input circuit is fixed due to capacitance resistance ware parameter, therefore can only carry out filtering for certain interference source.On input circuit filtering basis, follow-up further employing software carries out diagnosis judgement to each pulse validity, idler Pulse is carried out examination by a kind of efficient algorithm block, thus improve the accuracy of step-by-step counting further, greatly improve the antijamming capability worked under complex working condition.The realization of software control of the present invention adopts hardware and software technology, namely adopts current state-of-the-art CPLD chip technology, is solidificated in CPLD circuit by software process, and CPLD circuit is arranged as shown in Figure 6.Software control has a limiting principle design according to sports equipment percentage speed variation, as shown in Figure 7, shows pulse distribution card CPLD software control process waveform in figure.
The concrete control flow related to, as shown in Figure 9, comprising: algorithm startup, initialization preset parameter, A, B impulse level change detection in real time, startup halted state supervision timer, recording level width, the validity of decision level width, level changes output, whether decision level width is greater than stops width, renewal judges parameter register.
Output circuit: for improving the antijamming capability of output signal to PLC section further, CPLD output of pulse signal is first through light-coupled isolation ISO7220.Signal through light-coupled isolation delivers to PLC system reception by difference channel DS1692 again.Signal long-distance transmissions ability is enhanced while this method for designing improves antijamming capability.
Technical solution of the present invention provides a kind of pulse distribution technology of high anti-jamming capacity, and its core is improve the accuracy of pulse distribution function, by the improvement of hardware filtering and control method, judges and disposal ability to improve interference.In the technical program, have employed hardware replace by software, greatly reduce device heating amount and manufacturing cost.
The present invention verifies by producing on line in hot rolling, solves the technological difficulties of basic automatization transformation; The high anti-jamming capacity of this product and low manufacturing cost simultaneously, popularizing application prospect is wide.
Should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after having read above-mentioned instruction content of the present invention.
Claims (6)
1. one kind has the pulse distribution system of high anti-jamming capacity, it is characterized in that, comprise: isolated from power and supply module, input module, processing module, output module, described isolated from power and supply module are connected described input module, processing module, output module respectively; Described isolated from power and supply module comprise power supply and power supply circuits, described input module comprises level matching circuit and electrical isolation circuit, described processing module adopts complex programmable logic device chip circuit, include data sampling circuit, data genuine/counterfeit discriminating circuit, data transmit circuit, described output module comprises electrical isolation circuit, level matching circuit.
2. the pulse distribution system with high anti-jamming capacity according to claim 1, is characterized in that, described electrical isolation circuit comprises the multiple isolating chips controlled all circuit power isolation and sensor power isolated from power.
3. the pulse distribution system with high anti-jamming capacity according to claim 1, it is characterized in that, described level matching circuit comprises light-coupled isolation chip.
4. the pulse distribution system with high anti-jamming capacity according to claim 1, it is characterized in that, comprise at multiple isolating chips of output isolation circuit: DC/DC isolating chip, the three pieces of DC/DC isolating chips be integrated on a pulse distribution card, with completely isolated by carrying out between each pulse transducer power supply, pulse transducer power supply and distribution plate power supply, each pulse transducer pulse signal power supply, avoid interference each other.
5. the pulse distribution system with high anti-jamming capacity according to claim 1, it is characterized in that, level matching circuit is according to following formulae discovery:
Wherein:
V
c: sampled level (V);
V
o: PLG power supply (V);
R
l: PLG load resistance (Ω);
R
1, R
3, R
5: Signal level assignment resistance (Ω).
6. the pulse allocating method of a high anti-jamming capacity, by the pulse distribution System Implementation with high anti-jamming capacity described in any one of claims 1 to 3, described pulse distribution system comprises isolated from power and supply module, includes the input module of level matching circuit and electrical isolation circuit, includes data sampling circuit, the processing module of data genuine/counterfeit discriminating circuit, data transmit circuit, include the output module of electrical isolation circuit, level matching circuit, and this pulse allocating method comprises:
Pulse signal inputs: inputted by pulse transducer signal by input module;
Impulse level input conversion: complete the sampling of pulse signal, filtering, waveform shaping and light-coupled isolation by level matching circuit, process use further for subsequent conditioning circuit;
Input circuit is isolated: completely isolated by carrying out between each pulse transducer power supply, pulse transducer power supply and distribution plate power supply, each pulse transducer pulse signal power supply respectively by multiple isolating chips of electrical isolation circuit, to avoid interference each other;
Data sampling: the frequency being determined different pulse signal acquisition by data sampling circuit, is determined, to current pulse signal acquisition the number of times adopted simultaneously;
Effective or invalid data judges: judged adopting the validity of data by data genuine/counterfeit discriminating circuit, when being judged as invalid data, system is deleted automatically; When judging effective, carry out next step;
Data send: by data transmit circuit, effective pulse signal is sent to next step;
Output circuit is isolated: completely isolated by carrying out between each pulse transducer power supply, pulse transducer power supply and distribution plate power supply, each pulse transducer pulse signal power supply respectively by multiple isolating chips of electrical isolation circuit, to avoid interference each other;
Output level mates: by the light-coupled isolation chip of level matching circuit to the output of pulse signal level match for the treatment of circuit, to improve the antijamming capability of output signal to PLC section further;
Signal input programmable logic controller (PLC): the signal through light-coupled isolation delivers to PLC system reception by difference channel again.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596341A (en) * | 2019-06-28 | 2019-12-20 | 南京天补智联信息科技有限公司 | Integrated soil and surrounding environment detection system |
| WO2024114200A1 (en) * | 2022-12-01 | 2024-06-06 | 深圳市恒运昌真空技术股份有限公司 | Pulse signal processing method and apparatus, and matching circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101621202A (en) * | 2009-08-14 | 2010-01-06 | 北京思源清能电气电子有限公司 | Controller of high-voltage chain type static and synchronous compensator |
| US20100250820A1 (en) * | 2009-03-30 | 2010-09-30 | Analog Devices, Inc. | Usb isolator with advanced control features |
| CN102231626A (en) * | 2011-03-10 | 2011-11-02 | 西北工业大学 | Large current pulse generating distributing device |
-
2014
- 2014-03-18 CN CN201410098772.3A patent/CN104935309A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100250820A1 (en) * | 2009-03-30 | 2010-09-30 | Analog Devices, Inc. | Usb isolator with advanced control features |
| CN101621202A (en) * | 2009-08-14 | 2010-01-06 | 北京思源清能电气电子有限公司 | Controller of high-voltage chain type static and synchronous compensator |
| CN102231626A (en) * | 2011-03-10 | 2011-11-02 | 西北工业大学 | Large current pulse generating distributing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596341A (en) * | 2019-06-28 | 2019-12-20 | 南京天补智联信息科技有限公司 | Integrated soil and surrounding environment detection system |
| WO2024114200A1 (en) * | 2022-12-01 | 2024-06-06 | 深圳市恒运昌真空技术股份有限公司 | Pulse signal processing method and apparatus, and matching circuit |
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Application publication date: 20150923 |
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