CN105634120A - Signal conditioner of low-voltage electric control cabinet intelligent monitoring system - Google Patents
Signal conditioner of low-voltage electric control cabinet intelligent monitoring system Download PDFInfo
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- CN105634120A CN105634120A CN201410596162.6A CN201410596162A CN105634120A CN 105634120 A CN105634120 A CN 105634120A CN 201410596162 A CN201410596162 A CN 201410596162A CN 105634120 A CN105634120 A CN 105634120A
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- diode
- operational amplifier
- resistance
- signal conditioner
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Abstract
The invention discloses a signal conditioner of a low-voltage electric control cabinet intelligent monitoring system. The signal conditioner comprises a first resistor, a second resistor, an operational amplifier, a first capacitor, a second capacitor, a first diode, a second diode, and a signal output line. The first capacitor and the second resistor are connected in series and then are connected in parallel with the first resistor and the second capacitor so that a series-parallel connection branch is formed. The two ends of the series-parallel connection branch are connected with the inverting input end and the output end of the operational amplifier respectively. The positive pole of the first diode and the negative pole of the second diode are both connected with the inverting input end of the operational amplifier. The negative pole of the first diode and the positive pole of the second diode are both connected with the non-inverting input end of the operational amplifier. By means of the above structure, the signal conditioner is simple in overall structure, few in components, easy to implement, and low in cost. It is easy to debug a required voltage output when the signal conditioner is used, thereby contributing to the popularization and the application of the signal conditioner.
Description
Technical field
The present invention relates to low-voltage power supply to regulate and automation field, the specifically signal conditioner of low-voltage electric cabinet intelligent monitor system.
Background technology
The electricity consumer of the medium and small power supply scale such as residential building, enterprises and institutions frequently with the electrical control cubicles of middle low capacity as power supply control apparatus, in order to be maintained when the electrical control cubicles of middle low capacity breaks down, check the duty of electrical control cubicles at present frequently with the mode of manual inspection. The mode adopting manual inspection exist inspection not in time, abnormal conditions can not pinpoint discovery and the problem such as investigation in time. When the problems such as power load increase, cable connector partial oxidation occur, cable connector part heat production is caused to increase, pole fire hazardous.
In order to find electrical control cubicles fault in time, existing electrical control cubicles is generally equipped with intelligent monitor system, and intelligent monitor system analyzes and processes by gathering the current signal of electrical control cubicles, and then realizes the long-range monitoring to electrical control cubicles. Wherein, the signal of the electrical control cubicles collected is big current signal, and in monitoring system, small voltage signal generally can only be processed by the microprocessor of monitor terminal, therefore needs the big current signal to collecting to change into small voltage signal. It is complicated that big electric current is changed into circuit structure designed during small voltage by the monitoring system of existing electrical control cubicles, uses element more, and cost is high, and the small voltage process that big current signal is adjusted to monitoring system middle controller demand is loaded down with trivial details.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that the signal conditioner of a kind of low-voltage electric cabinet intelligent monitor system, its use components and parts few, cost is low, and debug when big current signal is changed into small voltage signal convenient.
This invention address that the problems referred to above are achieved through the following technical solutions: the signal conditioner of low-voltage electric cabinet intelligent monitor system, including the first resistance, the second resistance, operational amplifier, the first electric capacity, the second electric capacity, the first diode, the second diode and output line road, constituting connection in series-parallel branch road with the first resistance and the second Capacitance parallel connection again after described first electric capacity and the second resistant series, these connection in series-parallel branch road two ends are connected with the inverting input of operational amplifier and outfan respectively; Described first diode cathode and the second diode cathode are all connected with the inverting input of operational amplifier, and the first diode cathode and the second diode cathode are all connected with the in-phase input end of operational amplifier. When the present invention applies, in-phase input end and the inverting input of operational amplifier are all connected with current transformer, current transformer carry out the collection of current signal, and the signal collected is exported by output line road after the present invention converts.
Further, the signal conditioner of low-voltage electric cabinet intelligent monitor system, also include power supply, described power supply is connected with operational amplifier and powers for operational amplifier.
For the ease of the resistance of the first resistance and the second resistance is adjusted, further, described first resistance and the second resistance are adjustable resistance.
In sum, the method have the advantages that (1) present invention includes the first resistance, the second resistance, operational amplifier, the first electric capacity, the second electric capacity, the first diode, the second diode and output line road, wherein, constituting connection in series-parallel branch road with the first resistance and the second Capacitance parallel connection again after first electric capacity and the second resistant series, these connection in series-parallel branch road two ends are connected with the inverting input of operational amplifier and outfan respectively. First diode cathode and the second diode cathode are all connected with the inverting input of operational amplifier, and the first diode cathode and the second diode cathode are all connected with the in-phase input end of operational amplifier. The present invention adopts said structure, and overall structure is simple, uses components and parts few, it is simple to realizing, cost is low, can obtain required voltage output by the resistance of change the first resistance when the present invention applies, and it is convenient to debug, and then is conducive to the popularization and application of the present invention.
(2) present invention additionally comprises the first electric capacity and the second resistance, when the present invention applies, the first electric capacity and the second resistance are for compensating phase shift, can reach required phase shift compensation precision by changing the resistance of the second resistance.
(3) present invention additionally comprises the second electric capacity, when the present invention applies, the second electric capacity is used for removing coupled signal, stability when energy promotion signal converts.
(4) signal can be inputted by the first diode and the second diode pair when the present invention applies and carry out low-voltage restriction, play the effect raising signal level, signal disturbing can be reduced.
Accompanying drawing explanation
Fig. 1 is the structural representation of one specific embodiment of the present invention.
In accompanying drawing, the name corresponding to accompanying drawing labelling is called: R1, the first resistance, R2, the second resistance, C1, the first electric capacity, C2, the second electric capacity, D1, the first diode, D2, the second diode, A1, operational amplifier, VCC, power supply.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is done detailed description further, but embodiments of the present invention are not limited to this.
Embodiment:
As shown in Figure 1, the signal conditioner of low-voltage electric cabinet intelligent monitor system, including the first resistance R1, the second resistance R2, operational amplifier A the 1, first electric capacity C1, the second electric capacity C2, the first diode D1, the second diode D2, power supply VCC and output line road, wherein, first resistance R1 and the second resistance R2 is adjustable resistance, and power supply is connected with operational amplifier A 1 and powers for operational amplifier A 1. First electric capacity C1 and the second resistance R2 is in parallel with the first resistance R1 and the second electric capacity C2 again after connecting constitutes connection in series-parallel branch road, and these connection in series-parallel branch road two ends are connected with the inverting input of operational amplifier A 1 and outfan respectively. First diode D1 positive pole and the second diode D2 negative pole are all connected with the inverting input of operational amplifier A 1, and the first diode D1 negative pole and the second diode D2 positive pole are all connected with the in-phase input end of operational amplifier A 1.
Above content is the further description present invention made in conjunction with concrete preferred implementation, it is impossible to assert that the specific embodiment of the present invention is confined to these explanations. For general technical staff of the technical field of the invention, without departing from other embodiments drawn under technical scheme, should be included in protection scope of the present invention.
Claims (3)
1. the signal conditioner of low-voltage electric cabinet intelligent monitor system, it is characterized in that, including the first resistance (R1), the second resistance (R2), operational amplifier (A1), the first electric capacity (C1), the second electric capacity (C2), the first diode (D1), the second diode (D2) and output line road, described first electric capacity (C1) is in parallel with the first resistance (R1) and the second electric capacity (C2) again after connecting with the second resistance (R2) constitutes connection in series-parallel branch road, and these connection in series-parallel branch road two ends are connected with the inverting input of operational amplifier (A1) and outfan respectively; Described first diode (D1) positive pole and the second diode (D2) negative pole are all connected with the inverting input of operational amplifier (A1), and the first diode (D1) negative pole and the second diode (D2) positive pole are all connected with the in-phase input end of operational amplifier (A1).
2. the signal conditioner of low-voltage electric cabinet intelligent monitor system according to claim 1, it is characterised in that also include power supply (VCC), described power supply is connected with operational amplifier (A1) and powers for operational amplifier (A1).
3. the signal conditioner of low-voltage electric cabinet intelligent monitor system according to claim 1 and 2, it is characterised in that described first resistance (R1) and the second resistance (R2) are adjustable resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410596162.6A CN105634120A (en) | 2014-10-30 | 2014-10-30 | Signal conditioner of low-voltage electric control cabinet intelligent monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410596162.6A CN105634120A (en) | 2014-10-30 | 2014-10-30 | Signal conditioner of low-voltage electric control cabinet intelligent monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105634120A true CN105634120A (en) | 2016-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410596162.6A Pending CN105634120A (en) | 2014-10-30 | 2014-10-30 | Signal conditioner of low-voltage electric control cabinet intelligent monitoring system |
Country Status (1)
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| CN (1) | CN105634120A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745007A (en) * | 2019-09-25 | 2020-02-04 | 山东黄金矿业（莱西）有限公司 | Mine transport vehicle |
-
2014
- 2014-10-30 CN CN201410596162.6A patent/CN105634120A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110745007A (en) * | 2019-09-25 | 2020-02-04 | 山东黄金矿业（莱西）有限公司 | Mine transport vehicle |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160601 |