CN204759140U - Weak electrical engineering security protection monitored control system - Google Patents
Weak electrical engineering security protection monitored control system Download PDFInfo
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- CN204759140U CN204759140U CN201520348590.7U CN201520348590U CN204759140U CN 204759140 U CN204759140 U CN 204759140U CN 201520348590 U CN201520348590 U CN 201520348590U CN 204759140 U CN204759140 U CN 204759140U
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Abstract
The utility model belongs to the technical field of weak electrical engineering, especially, relate to a weak electrical engineering security protection monitored control system, including host system, sensor module, amplifier module, host system chip U1, antenna E1, sensor module includes sensor J1, sensor J2, sensor J3, the amplifier module includes amplifier U2, amplifier U3, resistance R4, resistance R5, resistance R6, electric capacity C1, inductance L1, inductance L2. This patent adopts radio transmission technology, need not to adopt wired cable to transmit, and its transmission distance is far away, simple to operate, and the maintenance cost is low, the module is eliminated by the impedance that inductance L1, resistance R5, inductance L2, resistance R6 constitute to the adoption for each circuit module receives single -point alone on the ground, reduces produced interference voltage in the impedance of multicircuit common grounding, still will avoid forming the unnecessary earth -return simultaneously as far as possible, and then eliminate the impedance.
Description
Technical field
The utility model belongs to light-current engineering technical field, particularly relates to a kind of light-current engineering safety defense monitoring system.
Background technology
At present, have kinds of schemes to the long-distance transmissions of the weak voltage signal in light-current engineering safety defense monitoring system, wherein, voltage signal source generally results from sensor internal, and instrument and meter exports and industrial environment.Under normal circumstances, the quantitative value of these voltage signals is all fainter, so be called weak voltage signal.When carrying out long-distance transmissions to weak voltage signal, generally first being amplified process, and then being transmitted.Treatment circuit has certain impedance usually, will form decay like this, make measuring-signal present incomplete property to faint signal source.But, usually there is a constant impedance in the circuit of the transmission circuit of traditional light-current engineering safety defense monitoring system, decay can be caused to the signal in transmitting procedure so again, further increase the distortion of original signal.
Summary of the invention
The utility model provides a kind of light-current engineering safety defense monitoring system, usually there is a constant impedance in the circuit solving the transmission circuit of light-current engineering safety defense monitoring system traditional in above-mentioned background technology, decay can be caused to the signal in transmitting procedure so again, further increase the problem of the distortion of original signal.
The technical matters that the utility model solves realizes by the following technical solutions: the utility model provides a kind of light-current engineering safety defense monitoring system, it is characterized in that: comprise main control module, sensor assembly, amplifier module, described main control module chip U1, antenna E1, described sensor assembly comprises sensor J1, sensor J2, sensor J3, described amplifier module comprises amplifier U2, amplifier U3, resistance R4, resistance R5, resistance R6, electric capacity C1, inductance L 1, inductance L 2, described sensor J1 connects the pin 18 of chip U1, described sensor J2 connects the pin 19 of chip U1, described sensor J3 connects the pin 20 of chip U1, described chip U1 selects the chip of STM32F407ZG signal, its pin 16 ground connection, its pin 40 meets antenna E1, one end of the pin 2 connecting resistance R5 of described amplifier U2, one end of inductance L 1, its pin 3 connects the pin 28 of chip U1, and its pin 1 connects the pin 2 of amplifier U3, one end of electric capacity C1, the other end of resistance R5, one end of inductance L 2, the pin 3 of described amplifier U3 connects the pin 27 of chip U1, one end of its pin 1 connecting resistance R6, one end of resistance R4, the other end of another termination capacitor C1 of described resistance R4, the other end of resistance R6, the other end of inductance L 2, the other end ground connection of described inductance L 1.
Described amplifier U2 selects operational amplifier.
Described amplifier U3 selects comparison amplifier.
The beneficial effects of the utility model are:
1, this patent utilizes sensor assembly detecting instrument instrument to export and industrial environment signal, then main control chip process is passed to, carry out amplification by amplifier module again to process, finally transmitted by antenna, whole process, adopt Radio Transmission Technology, transmit without the need to adopting wireline cable, its long transmission distance, easy for installation, maintenance cost is low.
2, this patent adopts the impedance cancellation module be made up of inductance L 1, resistance R5, inductance L 2, resistance R6, each circuit module is made to receive separately a single-point on the ground, lower the interference voltage that the impedance of multicircuit common ground produces, also to avoid the formation of unnecessary ground circuit simultaneously as far as possible, and then eliminate impedance.
3, the impedance cancellation module of this patent can be eliminated on circuit and usually there is a constant impedance, avoids the signal in transmitting procedure to cause decay, and then the problem of the distortion of solution original signal.
4, the circuit designed by this patent, structure is simple, low cost of manufacture, and it is low in energy consumption, and disguised high, easy for installation, transmission range is long.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of main control module of the present utility model and sensor assembly;
Fig. 2 is the circuit theory diagrams of amplifier module of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
Embodiment:
The present embodiment comprises: main control module, sensor assembly, amplifier module, described main control module chip U1, antenna E1, described sensor assembly comprises sensor J1, sensor J2, sensor J3, described amplifier module comprises amplifier U2, amplifier U3, resistance R4, resistance R5, resistance R6, electric capacity C1, inductance L 1, inductance L 2, described sensor J1 connects the pin 18 of chip U1, described sensor J2 connects the pin 19 of chip U1, described sensor J3 connects the pin 20 of chip U1, described chip U1 selects the chip of STM32F407ZG signal, its pin 16 ground connection, its pin 40 meets antenna E1, one end of the pin 2 connecting resistance R5 of described amplifier U2, one end of inductance L 1, its pin 3 connects the pin 28 of chip U1, and its pin 1 connects the pin 2 of amplifier U3, one end of electric capacity C1, the other end of resistance R5, one end of inductance L 2, the pin 3 of described amplifier U3 connects the pin 27 of chip U1, one end of its pin 1 connecting resistance R6, one end of resistance R4, the other end of another termination capacitor C1 of described resistance R4, the other end of resistance R6, the other end of inductance L 2, the other end ground connection of described inductance L 1.
Described amplifier U2 selects operational amplifier.
Described amplifier U3 selects comparison amplifier.
This patent utilizes sensor assembly detecting instrument instrument to export and industrial environment signal, then main control chip process is passed to, carry out amplification by amplifier module again to process, finally transmitted by antenna, whole process, adopt Radio Transmission Technology, transmit without the need to adopting wireline cable, its long transmission distance, easy for installation, maintenance cost is low; Adopt the impedance cancellation module be made up of inductance L 1, resistance R5, inductance L 2, resistance R6, each circuit module is made to receive separately a single-point on the ground, lower the interference voltage that the impedance of multicircuit common ground produces, also to avoid the formation of unnecessary ground circuit simultaneously as far as possible, and then eliminate impedance; Impedance cancellation module can be eliminated on circuit exists a constant impedance usually, avoids the signal in transmitting procedure to cause decay, and then the problem of the distortion of solution original signal.
Utilize technical scheme described in the utility model, or those skilled in the art being under the inspiration of technical solutions of the utility model, designing similar technical scheme, and reach above-mentioned technique effect, is all fall into protection domain of the present utility model.
Claims (3)
1. a light-current engineering safety defense monitoring system, is characterized in that: comprise main control module, sensor assembly, amplifier module, described main control module chip U1, antenna E1, described sensor assembly comprises sensor J1, sensor J2, sensor J3, described amplifier module comprises amplifier U2, amplifier U3, resistance R4, resistance R5, resistance R6, electric capacity C1, inductance L 1, inductance L 2, described sensor J1 connects the pin 18 of chip U1, described sensor J2 connects the pin 19 of chip U1, described sensor J3 connects the pin 20 of chip U1, described chip U1 selects the chip of STM32F407ZG signal, its pin 16 ground connection, its pin 40 meets antenna E1, one end of the pin 2 connecting resistance R5 of described amplifier U2, one end of inductance L 1, its pin 3 connects the pin 28 of chip U1, and its pin 1 connects the pin 2 of amplifier U3, one end of electric capacity C1, the other end of resistance R5, one end of inductance L 2, the pin 3 of described amplifier U3 connects the pin 27 of chip U1, one end of its pin 1 connecting resistance R6, one end of resistance R4, the other end of another termination capacitor C1 of described resistance R4, the other end of resistance R6, the other end of inductance L 2, the other end ground connection of described inductance L 1.
2. a kind of light-current engineering safety defense monitoring system according to claim 1, is characterized in that: described amplifier U2 selects operational amplifier.
3. a kind of light-current engineering safety defense monitoring system according to claim 1, is characterized in that: described amplifier U3 selects comparison amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520348590.7U CN204759140U (en) | 2015-05-26 | 2015-05-26 | Weak electrical engineering security protection monitored control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520348590.7U CN204759140U (en) | 2015-05-26 | 2015-05-26 | Weak electrical engineering security protection monitored control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204759140U true CN204759140U (en) | 2015-11-11 |
Family
ID=54473827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520348590.7U Expired - Fee Related CN204759140U (en) | 2015-05-26 | 2015-05-26 | Weak electrical engineering security protection monitored control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204759140U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467917A (en) * | 2016-01-07 | 2016-04-06 | 江苏海事职业技术学院 | Refrigeration-type weak current engineering security monitoring system |
| CN108230816A (en) * | 2018-04-08 | 2018-06-29 | 无锡职业技术学院 | A kind of story height analog module and intergenerational building talkback actual training device |
-
2015
- 2015-05-26 CN CN201520348590.7U patent/CN204759140U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467917A (en) * | 2016-01-07 | 2016-04-06 | 江苏海事职业技术学院 | Refrigeration-type weak current engineering security monitoring system |
| CN108230816A (en) * | 2018-04-08 | 2018-06-29 | 无锡职业技术学院 | A kind of story height analog module and intergenerational building talkback actual training device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20180526 |