CN211293102U - Line protection measurement and control device - Google Patents
Line protection measurement and control device Download PDFInfo
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- CN211293102U CN211293102U CN201921855293.6U CN201921855293U CN211293102U CN 211293102 U CN211293102 U CN 211293102U CN 201921855293 U CN201921855293 U CN 201921855293U CN 211293102 U CN211293102 U CN 211293102U
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- 238000005259 measurement Methods 0.000 title claims abstract description 38
- 238000004891 communication Methods 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 238000007726 management method Methods 0.000 description 22
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013523 data management Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
The utility model discloses a line protection measurement and control device, belong to the measurement and control field, including main control circuit, power supply circuit, touch display screen, control button, communication circuit and interchange acquisition circuit, main control circuit respectively with touch display screen, control button, communication circuit and interchange acquisition circuit are connected, power supply circuit is used for the power supply, interchange acquisition circuit includes interchange analog signal acquisition circuit and AD converting circuit, AD converting circuit constitutes many AD converters by at least 2 AD0809 chips, convert the analog signal that interchange analog signal acquisition circuit gathered into digital signal, transmit to main control circuit; the main control circuit sends the digital signals to the touch display screen for display, and the digital signals are sent to the background management system through the communication circuit. The utility model discloses constitute many AD converters by 2 at least AD0809 chips, be convenient for extend.
Description
Technical Field
The utility model relates to a observe and control the field, especially indicate a line protection measurement and control device.
Background
With the rapid development of the power grid technology in the direction of the smart power grid, line protection measurement and control devices are widely used for protecting power grid lines. For example, chinese utility model patent with publication number CN201780502U discloses a line protection measurement and control device. The problems of low measurement precision and low communication rate of the conventional line protection measurement and control device are mainly solved. The measurement and control device further comprises a 14-bit A/D converter, and the 14-bit A/D converter is connected between the alternating current analog quantity signal input end of the CPU system and the signal output end of the alternating current acquisition module. The line protection measurement and control device is improved on the basis of the original structure, so that the measurement precision of the line protection measurement and control device is improved to 0.2%, the data communication transmission rate reaches 10MB, the line protection measurement and control device can adapt to a large amount of data transmission, the anti-interference capability of the line protection measurement and control device is improved, and the line protection measurement and control device has high operation stability. The number of the pins of the A/D converter of the measurement and control device is not enough, so that the measurement and control device is inconvenient to expand.
SUMMERY OF THE UTILITY MODEL
The utility model provides a line protection measurement and control device has solved among the prior art not enough in the pin quantity of measurement and control device's AD converter, the problem of being not convenient for extend.
The technical scheme of the utility model is realized like this:
a line protection measurement and control device comprises a main control circuit, a power circuit, a touch display screen, a control key, a communication circuit and an alternating current acquisition circuit, wherein the main control circuit is respectively connected with the touch display screen, the control key, the communication circuit and the alternating current acquisition circuit, the power circuit is used for supplying power, the alternating current acquisition circuit comprises an alternating current analog signal acquisition circuit and an AD conversion circuit, the AD conversion circuit comprises at least 2 AD0809 chips to form a multi-bit AD converter, analog signals acquired by the alternating current analog signal acquisition circuit are converted into digital signals, and the digital signals are transmitted to the main control circuit; the main control circuit sends the digital signals to the touch display screen for displaying, and the digital signals are sent to the background management system through the communication circuit.
As a preferred embodiment of the present invention, the communication circuit is a 4G communication circuit/ethernet communication circuit.
As a preferred embodiment of the present invention, the main control circuit is formed by a DSP chip.
As a preferred embodiment of the present invention, the DSP chip is connected to the touch display screen through the FPC cable.
As a preferred embodiment of the utility model, the DSP chip is connected with the FLASH chip and the CAN bus.
As a preferred embodiment of the utility model, the DSP chip still is connected with the GPS chip, the GPS chip with GPS positioning information send to the DSP chip, the DSP chip with GPS positioning information warp communication circuit send to backstage management system.
As a preferred embodiment of the present invention, the background management system includes a computer management terminal and a server, and the computer management terminal interacts data with the server.
The beneficial effects of the utility model reside in that: the multi-bit AD converter is composed of at least 2 AD0809 chips, and is convenient to expand.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic block diagram of an embodiment of a line protection measurement and control device of the present invention;
FIG. 2 is a circuit schematic of a 4G communication circuit;
fig. 3 is a circuit schematic diagram of the FPC.
In the figure, 1-master control circuit; 2-a power supply circuit; 3-a touch display screen; 4-control the key; 5-a communication circuit; 6-alternating current acquisition circuit; 61-alternating current analog signal acquisition circuit; 62-AD conversion circuit; 7-background management system; 71-computer management terminal; 72-Server.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1, the utility model provides a line protection measurement and control device, including main control circuit 1, power supply circuit 2, touch display screen 3, control button 4, communication circuit 5 and interchange acquisition circuit 6, main control circuit 1 respectively with touch display screen 3, control button 4, communication circuit 5 and interchange acquisition circuit 6 are connected, power supply circuit 2 is used for the power supply, interchange acquisition circuit 6 includes interchange analog signal acquisition circuit 61 and AD converting circuit 62, interchange analog signal acquisition circuit 61 acquires the interchange analog signal of electric wire netting circuit under main control circuit 1's control, its circuit is prior art, no longer describe repeatedly; the AD conversion circuit 62 is a multi-bit AD converter composed of at least 2 AD0809 chips, converts analog signals acquired by the ac analog signal acquisition circuit 61 into digital signals, and transmits the digital signals to the main control circuit 1; the main control circuit 1 sends the digital signal to the touch display screen 3 for displaying, and sends the digital signal to the background management system 7 through the communication circuit 5. The touch display screen 3 and the control keys 4 form a man-machine interaction system, and can send control commands to the main control circuit 1.
The communication circuit 5 is a 4G communication circuit 5/an ethernet communication circuit 5. The circuit diagram of the 4G communication circuit 5 is shown in fig. 2, and is connected to the main control circuit 1 through UART _ RXD and UART _ TXD pins, and the 4G communication circuit 5 is further connected to an LED indicator light for indicating the working status thereof. The ethernet communication circuit 5 is configured by using IP101 GRI.
The main control circuit 1 is formed by a DSP chip. The DSP control chip can adopt TMS320C62xx, TMS320C64xx, TMS320C67xx and the like. The circuit structure of the power circuit 2 is the prior art and is not described in detail.
As shown in fig. 3, the DSP chip is connected to the touch display 3 through an FPC cable. The connection circuit of the DSP control chip and the FPC is shown in FIG. 3. The model of the touch display screen 3 can be customized by a technician according to requirements. The DSP chip is connected with the FLASH chip and the CAN bus. The FLASH chip is used for data storage and preventing power failure. The CAN bus is used for data transmission, and a plurality of line protection measurement and control devices CAN conveniently carry out data interaction. The CAN bus CAN also be used for acquiring data acquired by other data acquisition sensors and transmitting the data to the main control circuit 1, the main control circuit 1 CAN selectively transmit the data to the touch display screen 3 for display after processing the data, and the data CAN also be transmitted to the background management system 7 through the communication circuit 5 for centralized storage, management and statistics.
The DSP chip is also connected with a GPS chip, the GPS chip sends GPS positioning information to the DSP chip, and the DSP chip sends the GPS positioning information to the background management system 7 through the communication circuit 5. The GPS chip is produced by sirf company. The background management system 7 is used for managing the plurality of line protection measurement and control devices, acquiring data of all the line protection measurement and control devices, and sending a remote control instruction to the line protection measurement and control devices. The background management system 7 is arranged to conveniently perform centralized data management and control on the line protection measurement and control devices, one technician can manage a plurality of line protection measurement and control devices through the background management system 7, and measurement and control protection efficiency is improved.
The background management system 7 comprises a computer management terminal 71 and a server 72, wherein the computer management terminal 71 interacts data with the server 72 through a network cable. The computer management terminal 71 is a desktop computer or a notebook computer in the prior art. The server 72 is used for storing big data and providing service for the computer management terminal 71, the computer management terminal 71 stores the collected data of all the line protection measurement and control devices in the server 72, the storage is convenient, the running performance of the server 72 is superior to that of the computer management terminal 71, a complex operation program is carried out in the server 72, and the performance requirement on the computer management terminal 71 is reduced.
The utility model discloses constitute many AD converters by 2 at least AD0809 chips, be convenient for extend.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a line protection measurement and control device, includes master control circuit, power supply circuit, touch display screen, control button, communication circuit and exchanges acquisition circuit, its characterized in that: the main control circuit is respectively connected with the touch display screen, the control keys, the communication circuit and the alternating current acquisition circuit, the power supply circuit is used for supplying power, the alternating current acquisition circuit comprises an alternating current analog signal acquisition circuit and an AD conversion circuit, the AD conversion circuit is a multi-bit AD converter formed by at least 2 AD0809 chips, analog signals acquired by the alternating current analog signal acquisition circuit are converted into digital signals, and the digital signals are transmitted to the main control circuit; the main control circuit sends the digital signals to the touch display screen for displaying, and the digital signals are sent to the background management system through the communication circuit.
2. The line protection measurement and control device according to claim 1, characterized in that: the communication circuit is a 4G communication circuit/Ethernet communication circuit.
3. The line protection measurement and control device according to claim 1, characterized in that: the main control circuit is formed by a DSP chip.
4. The line protection measurement and control device according to claim 3, wherein: the DSP chip is connected with the touch display screen through an FPC flat cable.
5. The line protection measurement and control device according to claim 3, wherein: and the DSP chip is connected with the FLASH chip and the CAN bus.
6. The line protection measurement and control device according to claim 3, wherein: the DSP chip is also connected with a GPS chip, the GPS chip sends GPS positioning information to the DSP chip, and the DSP chip sends the GPS positioning information to the background management system through the communication circuit.
7. The line protection measurement and control device according to claim 1 or 6, characterized in that: the background management system comprises a computer management terminal and a server, and the computer management terminal and the server interact data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921855293.6U CN211293102U (en) | 2019-10-30 | 2019-10-30 | Line protection measurement and control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921855293.6U CN211293102U (en) | 2019-10-30 | 2019-10-30 | Line protection measurement and control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211293102U true CN211293102U (en) | 2020-08-18 |
Family
ID=72018502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921855293.6U Expired - Fee Related CN211293102U (en) | 2019-10-30 | 2019-10-30 | Line protection measurement and control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211293102U (en) |
-
2019
- 2019-10-30 CN CN201921855293.6U patent/CN211293102U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200818 |