CN211206586U - Ammeter with BACnet controller function - Google Patents
Ammeter with BACnet controller function Download PDFInfo
- Publication number
- CN211206586U CN211206586U CN201921202124.2U CN201921202124U CN211206586U CN 211206586 U CN211206586 U CN 211206586U CN 201921202124 U CN201921202124 U CN 201921202124U CN 211206586 U CN211206586 U CN 211206586U
- Authority
- CN
- China
- Prior art keywords
- circuit
- control circuit
- bacnet
- main control
- conversion circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a take ammeter of BACnet controller function, by a shell and establish the power conversion circuit in the shell, signal of telecommunication acquisition conversion circuit, the display circuit, button acquisition circuit, input/output signal conversion circuit, first communication interface and the master control circuit who fuses the BACnet programmable controller function constitute, power conversion circuit is the power supply of above-mentioned various other circuits, master control circuit and signal of telecommunication acquisition conversion circuit, the display circuit, button acquisition circuit, input/output signal conversion circuit and first communication interface connection. The utility model discloses in the control circuit of ammeter has been gone into with the function fusion that BACnet programmable controller possessed for the ammeter has possessed the logic control function, consequently when inserting building accuse BACnet system, the utility model discloses an ammeter need not to increase switching equipment such as BACnet programmable controller, protocol converter and switch board, has significantly reduced installation cost and debugging time cost.
Description
Technical Field
The utility model belongs to the technical field of the ammeter, concretely relates to take ammeter of BACnet controller function.
Background
The BACnet is a data communication protocol of building automation and control networks, and the data communication protocol can enable control products of different manufacturers to be integrated into a unified system and can integrate devices such as heating, ventilating, air conditioning, lighting, fire fighting, access control, safety precaution and the like. Therefore, the on-site controller conforming to BACnet is widely applied to the fields of building air conditioners, heating pipe networks, clean rooms, laboratories, operating rooms, coal mine geothermal utilization and the like.
As shown in fig. 1, a data communication protocol commonly used by the current electric meter is a modbus protocol, a gateway device needs to be added to access a building control BACnet system, and in addition, the electric meter only has a metering function and does not have a logic control function, so that in a building control project, if a control function needs to be implemented, a protocol converter, a BACnet controller and a control cabinet as shown in fig. 2 need to be added, and the equipment cost and the installation cost are greatly increased.
SUMMERY OF THE UTILITY MODEL
To the not enough of existence among the above-mentioned prior art, the utility model aims at providing a take ammeter of BACnet controller function to reduce the installation cost and the debugging time cost that the ammeter inserted building accuse BACnet system.
For realizing above-mentioned technical purpose, reach above-mentioned technological effect, the utility model discloses a following technical scheme realizes:
the utility model provides an ammeter with BACnet controller function, which comprises a shell, a power switching circuit, an electric signal acquisition switching circuit, a display circuit, a key acquisition circuit, an input and output signal switching circuit, a first communication interface and a main control circuit integrated with the BACnet programmable controller function, wherein the power switching circuit, the electric signal acquisition switching circuit, the display circuit, the key acquisition circuit, the input and output signal switching circuit, the first communication interface and the main control circuit are arranged in the shell;
one end of the power conversion circuit is used for accessing three-phase alternating current, and the other end of the power conversion circuit is respectively connected with the electric signal acquisition conversion circuit, the display circuit, the key acquisition circuit, the input/output signal conversion circuit, the first communication interface and the main control circuit and is responsible for converting AC220V into voltage required by the chip-level device;
the electric signal acquisition and conversion circuit takes an electric metering chip as a core, one end of the electric signal acquisition and conversion circuit is used for accessing voltage and current of three-phase alternating current, and the other end of the electric signal acquisition and conversion circuit is connected with the main control circuit and is responsible for calculating three-phase alternating current parameters including three-phase voltage, current, power, accumulated electric quantity and power factor and feeding back the calculated three-phase alternating current parameters to the main control circuit;
the display circuit is connected with the main control circuit and is responsible for receiving and displaying the three-phase alternating current parameters transmitted by the main control circuit;
one end of the key acquisition circuit is connected with the electric meter panel, and the other end of the key acquisition circuit is connected with the main control circuit and is responsible for converting the buttons on the electric meter panel into electric signals to be connected into the main control circuit;
one end of the input/output signal conversion circuit is used for accessing the sensor/actuator, and the other end of the input/output signal conversion circuit is connected with the main control circuit and is responsible for receiving the sensing information or the control command from the sensor/actuator and transmitting the received sensing information or the control command to the main control circuit;
one end of the first communication interface is used for accessing a building control BACnet system, and the other end of the first communication interface is connected with the main control circuit and is responsible for realizing the BACnet communication between the main control circuit and the building control BACnet system;
the main control circuit uses the singlechip as the core, possesses the ammeter function, and fuses BACnet MSTP communication, downloadable executive logic program that have that BACnet programmable controller possessed simultaneously, handles input/output information, read in the signal of telecommunication parameter and convert BACnet object and firmware upgrading function into, main control circuit respectively with the signal of telecommunication gather converting circuit the display circuit button acquisition circuit the input/output signal converting circuit with first communication interface connects, is responsible for simultaneously reading in three-phase alternating current parameter, outputs three-phase alternating current data, reads in button signal, handles input information and realizes BACnet communication protocol.
Further, the power conversion circuit converts AC220V to 12V or 5V voltage required by chip scale devices.
Furthermore, the display circuit comprises an L CD liquid crystal display screen and a liquid crystal interface chip, the L CD liquid crystal display screen is connected with the main control circuit through the liquid crystal interface chip, and the main control circuit displays the received three-phase alternating current on the L CD liquid crystal display screen through the liquid crystal interface chip.
Furthermore, the input/output signal conversion circuit comprises a general input port, an analog input port and a relay output port.
Further, the communication baud rate of the BACnet MSTP communication of the main control circuit is 76800, 38400, 19200 or 9600.
The utility model also provides an ammeter with the function of the BACnet controller, which consists of a shell, a power supply conversion circuit, an electric signal acquisition conversion circuit, a display circuit, a key acquisition circuit, an input and output signal conversion circuit, a first communication interface, a second communication interface, a main control circuit and a branch control circuit integrated with the function of the BACnet programmable controller, wherein the power supply conversion circuit, the electric signal acquisition conversion circuit, the display circuit, the key acquisition circuit, the input and output signal conversion circuit, the first communication interface, the second communication interface, the main control circuit and the;
one end of the power conversion circuit is used for accessing three-phase alternating current, and the other end of the power conversion circuit is respectively connected with the electric signal acquisition conversion circuit, the display circuit, the key acquisition circuit, the input and output signal conversion circuit, the first communication interface, the second communication interface, the main control circuit and the branch control circuit and is responsible for converting the AC220V into voltage required by the chip-level device;
the electric signal acquisition and conversion circuit takes an electric metering chip as a core, one end of the electric signal acquisition and conversion circuit is used for accessing voltage and current of three-phase alternating current, and the other end of the electric signal acquisition and conversion circuit is connected with the main control circuit and is responsible for calculating three-phase alternating current parameters including three-phase voltage, current, power, accumulated electric quantity and power factor and feeding back the calculated three-phase alternating current parameters to the main control circuit;
the display circuit is connected with the main control circuit and is responsible for receiving and displaying the three-phase alternating current parameters transmitted by the main control circuit;
one end of the key acquisition circuit is connected with the electric meter panel, and the other end of the key acquisition circuit is connected with the main control circuit and is responsible for converting the buttons on the electric meter panel into electric signals to be connected into the main control circuit;
one end of the first communication interface is connected with the main control circuit, the other end of the first communication interface is connected with the sub-control circuit and is responsible for signal transmission between the main control circuit and the sub-control circuit, and meanwhile, the first communication interface is responsible for converting TT L signals into field buses RS-485 or other field buses so as to realize a Modbus communication protocol between the main control circuit and a Modbus system;
the main control circuit takes a single chip microcomputer as a core, has an ammeter function, is respectively connected with the electric signal acquisition and conversion circuit, the display circuit, the key acquisition circuit and the first communication interface, and is also responsible for reading in three-phase alternating current parameters, outputting three-phase alternating current data, reading in key signals and realizing a Modbus communication protocol or other serial data communication protocols;
one end of the input and output signal conversion circuit is used for accessing a sensor/actuator, and the other end of the input and output signal conversion circuit is connected with a sub-control circuit and is responsible for receiving sensing information or control commands from the sensor/actuator and transmitting the received sensing information or control commands to the sub-control circuit;
one end of the second communication interface is used for accessing a building control BACnet system, and the other end of the second communication interface is connected with the sub-control circuit and is responsible for bidirectional conversion between a TT L signal and a field bus RS-485 or other field buses so as to realize BACnet communication between the sub-control circuit and the building control BACnet system;
the sub-control circuit takes a single chip microcomputer as a core, integrates BACnetMSTP communication, downloadable execution logic programs, input and output information processing, electric signal parameter reading and conversion into a BACnet object and firmware upgrading functions of a BACnet programmable controller, is respectively connected with the first communication interface, the input and output signal conversion circuit and the second communication interface, and is responsible for processing input and output information, reading electric signal parameters and conversion into the BACnet object and realizing a BACnet communication protocol.
Further, the power conversion circuit converts AC220V to 12V or 5V voltage required by chip scale devices.
Furthermore, the display circuit comprises an L CD liquid crystal display screen and a liquid crystal interface chip, the L CD liquid crystal display screen is connected with the main control circuit through the liquid crystal interface chip, and the main control circuit displays the received three-phase alternating current on the L CD liquid crystal display screen through the liquid crystal interface chip.
Furthermore, the input/output signal conversion circuit comprises a general input port, an analog input port and a relay output port.
Further, the communication baud rate of the BACnet MSTP communication of the sub-control circuit is 76800, 38400, 19200 or 9600.
The utility model has the advantages that:
the utility model discloses with BACnet MSTP communication that BACnet programmable controller possessed, can download execution logic procedure, processing input/output information, read in electric signal parameter and convert BACnet object and firmware upgrading function into and have fused into at least one control circuit, thereby make the utility model discloses an ammeter has still possessed the logic control function except possessing the measurement function, consequently when inserting building accuse BACnet system, the utility model discloses an ammeter need not to increase switching equipment such as BACnet programmable controller, protocol converter and switch board, has significantly reduced installation cost and debugging time cost.
Compared with the prior electric meter structure and solution, the utility model discloses an electric meter only increases communication interface, branch accuse circuit, input/output signal conversion circuit and adds total cost about 100 yuan, but has saved protocol converter, BACnet controller, switch board on the solution and has added total cost about 1000 yuan (market value about 2000 yuan) and debugging time cost.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
FIG. 1 is a schematic diagram of a conventional electricity meter;
FIG. 2 is a schematic diagram of a connection mode between a conventional electricity meter and a building control BACnet system;
fig. 3 is a schematic structural diagram of an embodiment of the electricity meter of the present invention;
fig. 4 is a schematic structural diagram of another embodiment of the electricity meter of the present invention;
fig. 5 is a schematic view of the connection mode between the electricity meter and the building-controlled BACnet system of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Example 1
The functions of the electric meter and the BACnet programmable controller are integrated into a master control single chip microcomputer, so that the hardware cost is saved.
Referring to fig. 3 and 5, an electricity meter with a BACnet controller function comprises a housing 1, and a power conversion circuit 2, an electric signal acquisition conversion circuit 3, a display circuit 4, a key acquisition circuit 5, an input/output signal conversion circuit 6, a first communication interface 7 and a main control circuit 8 integrated with the BACnet programmable controller function, which are arranged in the housing 1;
one end of the power conversion circuit 2 is used for accessing three-phase alternating current, and the other end of the power conversion circuit is respectively connected with the electrical signal acquisition and conversion circuit 3, the display circuit 4, the key acquisition circuit 5, the input/output signal conversion circuit 6, the first communication interface 7 and the main control circuit 8, and is responsible for converting the AC220V into the voltage required by the chip-level device;
the electric signal acquisition and conversion circuit 3 takes an electric metering chip as a core, one end of the electric signal acquisition and conversion circuit is used for accessing voltage and current of three-phase alternating current, and the other end of the electric signal acquisition and conversion circuit is connected with the main control circuit 8 and is responsible for calculating three-phase alternating current parameters including three-phase voltage, current, power, accumulated electric quantity and power factor and feeding back the calculated three-phase alternating current parameters to the main control circuit 8;
the display circuit 4 is connected with the main control circuit 8 and is responsible for receiving and displaying the three-phase alternating current parameters transmitted by the main control circuit 8;
one end of the key acquisition circuit 5 is connected with an electric meter panel 9, and the other end of the key acquisition circuit is connected with the main control circuit 8, and is responsible for converting buttons on the electric meter panel 9 into electric signals to be connected into the main control circuit 8;
one end of the input/output signal conversion circuit 6 is used for accessing a sensor/actuator 10, and the other end is connected with a main control circuit 8, and is responsible for receiving sensing information or control commands from the sensor/actuator 10 and transmitting the received sensing information or control commands to the main control circuit 8;
one end of the first communication interface 7 is used for accessing a building control BACnet system, and the other end is connected with the main control circuit 8 and is responsible for realizing BACnet communication between the main control circuit 8 and the building control BACnet system;
the main control circuit 8 uses the singlechip as the core, possesses the ammeter function, and fuses the BACnet MSTP communication that BACnet programmable controller possessed simultaneously, can download executive logic program, processing input/output information, read in the signal of telecommunication parameter and convert BACnet object and firmware upgrading function into, main control circuit 8 respectively with the signal of telecommunication gather converting circuit 3 display circuit 4 button acquisition circuit 5 input/output signal converting circuit 6 with first communication interface 7 connects, is responsible for simultaneously reading in three-phase alternating current parameter, outputs three-phase alternating current data, reads in button signal, handles input and loses information and realizes BACnet communication protocol.
Further, the power conversion circuit 2 converts the AC220V into 12V or 5V voltage required by chip-scale devices.
Further, the display circuit 4 includes L CD liquid crystal display and liquid crystal interface chip, the L CD liquid crystal display is connected with the main control circuit 8 through the liquid crystal interface chip, and the main control circuit 8 displays the received three-phase alternating current to the L CD liquid crystal display through the liquid crystal interface chip.
Further, the input/output signal conversion circuit 6 includes a general input port, an analog input port, and a relay output port.
Further, the communication baud rate of the BACnet MSTP communication provided by the main control circuit 8 is 76800, 38400, 19200 or 9600.
Example 2
On the basis of maintaining the circuit structure of the original electric meter unchanged, a new circuit part is added, the parts of the BACnet programmable controller are relatively independent, the hardware cost is relatively increased, and the program is relatively easy to develop.
Referring to fig. 4 and 5, an electricity meter with a BACnet controller function comprises a housing 1, and a power conversion circuit 2, an electric signal acquisition conversion circuit 3, a display circuit 4, a key acquisition circuit 5, an input/output signal conversion circuit 6, a first communication interface 7, a second communication interface 11, a main control circuit 8 and a sub-control circuit 12 integrated with the BACnet programmable controller function, which are arranged in the housing 1;
one end of the power conversion circuit 2 is used for accessing three-phase alternating current, and the other end of the power conversion circuit is respectively connected with the electric signal acquisition and conversion circuit 3, the display circuit 4, the key acquisition circuit 5, the input/output signal conversion circuit 6, the first communication interface 7, the second communication interface 11, the main control circuit 8 and the sub-control circuit 12, and is responsible for converting the AC220V into voltage required by the chip-level device;
the electric signal acquisition and conversion circuit 3 takes an electric metering chip as a core, one end of the electric signal acquisition and conversion circuit is used for accessing voltage and current of three-phase alternating current, and the other end of the electric signal acquisition and conversion circuit is connected with the main control circuit 8 and is responsible for calculating three-phase alternating current parameters including three-phase voltage, current, power, accumulated electric quantity and power factor and feeding back the calculated three-phase alternating current parameters to the main control circuit 8;
the display circuit 4 is connected with the main control circuit 8 and is responsible for receiving and displaying the three-phase alternating current parameters transmitted by the main control circuit 8;
one end of the key acquisition circuit 5 is connected with an electric meter panel 9, and the other end of the key acquisition circuit is connected with the main control circuit 8, and is responsible for converting buttons on the electric meter panel 9 into electric signals to be connected into the main control circuit 8;
one end of the first communication interface 7 is connected with the main control circuit 8, and the other end of the first communication interface is connected with the sub-control circuit 12, and is responsible for signal transmission between the main control circuit 8 and the sub-control circuit 12, and meanwhile, the first communication interface 7 is responsible for converting a TT L signal into a field bus RS-485, so that a Modbus communication protocol between the main control circuit 8 and a Modbus system is realized;
the main control circuit 8 takes a single chip microcomputer as a core, has an ammeter function, is respectively connected with the electric signal acquisition and conversion circuit 3, the display circuit 4, the key acquisition circuit 5 and the first communication interface 7, and is simultaneously responsible for reading in three-phase alternating current parameters, outputting three-phase alternating current data, reading in key signals and realizing a Modbus communication protocol;
one end of the input/output signal conversion circuit 6 is used for accessing a sensor/actuator 10, and the other end is connected with a sub-control circuit 12, and is responsible for receiving sensing information or control commands from the sensor/actuator 10 and transmitting the received sensing information or control commands to the sub-control circuit 12;
one end of the second communication interface 11 is used for accessing a building control BACnet system, and the other end is connected with the sub-control circuit 12 and is responsible for bidirectional conversion between a TT L signal and a field bus RS-485 so as to realize BACnet communication between the sub-control circuit 12 and the building control BACnet system;
the sub-control circuit 12 takes a single chip microcomputer as a core, integrates BACnetMSTP communication, downloadable execution logic programs, input and output information processing, electric signal parameter reading and conversion into BACnet objects and firmware upgrading functions of a BACnet programmable controller, and is respectively connected with the first communication interface 7, the input and output signal conversion circuit 6 and the second communication interface 11 and is responsible for processing input and output information, reading electric signal parameters and conversion into BACnet objects and realizing a BACnet communication protocol.
Further, the power conversion circuit 2 converts the AC220V into 12V or 5V voltage required by chip-scale devices.
Further, the display circuit 4 includes L CD liquid crystal display and liquid crystal interface chip, the L CD liquid crystal display is connected with the main control circuit 8 through the liquid crystal interface chip, and the main control circuit 8 displays the received three-phase alternating current to the L CD liquid crystal display through the liquid crystal interface chip.
Further, the input/output signal conversion circuit 6 includes a general input port, an analog input port, and a relay output port.
Further, the communication baud rate of the BACnet MSTP communication of the sub-control circuit 12 is 76800, 38400, 19200 or 9600.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a take ammeter of BACnet controller function which characterized in that: the device comprises a shell (1), a power supply conversion circuit (2), an electric signal acquisition conversion circuit (3), a display circuit (4), a key acquisition circuit (5), an input and output signal conversion circuit (6), a first communication interface (7) and a main control circuit (8) which is integrated with the function of a BACnet programmable controller, wherein the power supply conversion circuit, the electric signal acquisition conversion circuit (3), the display circuit, the key acquisition circuit (5), the input and output signal conversion circuit (6) and the main control circuit (8) are arranged in the shell;
one end of the power conversion circuit (2) is used for accessing three-phase alternating current, and the other end of the power conversion circuit is respectively connected with the electric signal acquisition and conversion circuit (3), the display circuit (4), the key acquisition circuit (5), the input and output signal conversion circuit (6), the first communication interface (7) and the main control circuit (8) and is responsible for converting the AC220V into voltage required by a chip-level device;
the electric signal acquisition and conversion circuit (3) takes an electric metering chip as a core, one end of the electric signal acquisition and conversion circuit is used for accessing the voltage and the current of three-phase alternating current, and the other end of the electric signal acquisition and conversion circuit is connected with the main control circuit (8) and is responsible for calculating three-phase alternating current parameters including three-phase voltage, current, power, accumulated electric quantity and power factor and feeding back the calculated three-phase alternating current parameters to the main control circuit (8);
the display circuit (4) is connected with the main control circuit (8) and is responsible for receiving and displaying three-phase alternating current parameters transmitted by the main control circuit (8);
one end of the key acquisition circuit (5) is connected with an electric meter panel (9), and the other end of the key acquisition circuit is connected with the main control circuit (8) and is responsible for converting a button on the electric meter panel (9) into an electric signal to be connected into the main control circuit (8);
one end of the input/output signal conversion circuit (6) is used for accessing a sensor/actuator (10), and the other end of the input/output signal conversion circuit is connected with a main control circuit (8) and is responsible for receiving sensing information or a control command from the sensor/actuator (10) and transmitting the received sensing information or the received control command to the main control circuit (8);
one end of the first communication interface (7) is used for accessing a building control BACnet system, and the other end of the first communication interface is connected with the main control circuit (8) and is responsible for realizing the BACnet communication between the main control circuit (8) and the building control BACnet system;
master control circuit (8) use the singlechip as the core, possess the ammeter function, and fuse the BACnet MSTP communication that BACnet programmable controller possessed simultaneously, can download executive logic program, handle input/output information, read in the signal of telecommunication parameter and convert BACnet object and firmware upgrading function into, master control circuit (8) respectively with signal of telecommunication collection converting circuit (3) display circuit (4) button acquisition circuit (5) input/output signal converting circuit (6) with first communication interface (7) are connected, are responsible for simultaneously reading in three-phase alternating current parameter, output three-phase alternating current data, read in button signal, handle input transmission information and realize BACnet communication protocol.
2. The electric meter with BACnet controller function of claim 1, wherein: the power conversion circuit (2) converts AC220V to 12V or 5V voltage required by chip scale devices.
3. The electric meter with the BACnet controller function according to claim 1, wherein the display circuit (4) comprises L CD liquid crystal display and a liquid crystal interface chip, the L CD liquid crystal display is connected with the main control circuit (8) through the liquid crystal interface chip, and the main control circuit (8) displays the received three-phase alternating current on the L CD liquid crystal display through the liquid crystal interface chip.
4. The electric meter with BACnet controller function of claim 1, wherein: the input and output signal conversion circuit (6) comprises a general input port, an analog input port and a relay output port.
5. The electric meter with BACnet controller function of claim 1, wherein: the communication baud rate of BACnet MSTP communication of the main control circuit (8) is 76800, 38400, 19200 or 9600.
6. The utility model provides a take ammeter of BACnet controller function which characterized in that: the intelligent control system is composed of a shell (1), a power supply conversion circuit (2), an electric signal acquisition conversion circuit (3), a display circuit (4), a key acquisition circuit (5), an input and output signal conversion circuit (6), a first communication interface (7), a second communication interface (11), a main control circuit (8) and a sub-control circuit (12) integrated with the function of a BACnet programmable controller, wherein the power supply conversion circuit (2), the electric signal acquisition conversion circuit (3), the display circuit (4), the key acquisition circuit (5), the input and output signal conversion circuit (6), the first communication interface (;
one end of the power conversion circuit (2) is used for accessing three-phase alternating current, and the other end of the power conversion circuit is respectively connected with the electric signal acquisition and conversion circuit (3), the display circuit (4), the key acquisition circuit (5), the input and output signal conversion circuit (6), the first communication interface (7), the second communication interface (11), the main control circuit (8) and the sub-control circuit (12) and is responsible for converting the AC220V into voltage required by a chip-level device;
the electric signal acquisition and conversion circuit (3) takes an electric metering chip as a core, one end of the electric signal acquisition and conversion circuit is used for accessing the voltage and the current of three-phase alternating current, and the other end of the electric signal acquisition and conversion circuit is connected with the main control circuit (8) and is responsible for calculating three-phase alternating current parameters including three-phase voltage, current, power, accumulated electric quantity and power factor and feeding back the calculated three-phase alternating current parameters to the main control circuit (8);
the display circuit (4) is connected with the main control circuit (8) and is responsible for receiving and displaying three-phase alternating current parameters transmitted by the main control circuit (8);
one end of the key acquisition circuit (5) is connected with an electric meter panel (9), and the other end of the key acquisition circuit is connected with the main control circuit (8) and is responsible for converting a button on the electric meter panel (9) into an electric signal to be connected into the main control circuit (8);
one end of the first communication interface (7) is connected with the main control circuit (8), the other end of the first communication interface is connected with the sub-control circuit (12) and is responsible for signal transmission between the main control circuit (8) and the sub-control circuit (12), and meanwhile, the first communication interface (7) is responsible for converting TT L signals into field bus RS-485 signals so as to realize a Modbus communication protocol between the main control circuit (8) and a Modbus system;
the main control circuit (8) takes a single chip microcomputer as a core, has an ammeter function, is respectively connected with the electric signal acquisition and conversion circuit (3), the display circuit (4), the key acquisition circuit (5) and the first communication interface (7), and is simultaneously responsible for reading in three-phase alternating current parameters, outputting three-phase alternating current data, reading in key signals and realizing a Modbus communication protocol;
one end of the input/output signal conversion circuit (6) is used for accessing a sensor/actuator (10), and the other end of the input/output signal conversion circuit is connected with a sub-control circuit (12) and is responsible for receiving sensing information or control commands from the sensor/actuator (10) and transmitting the received sensing information or control commands to the sub-control circuit (12);
one end of the second communication interface (11) is used for accessing a building control BACnet system, and the other end of the second communication interface is connected with the sub-control circuit (12) and is responsible for bidirectional conversion between a TT L signal and a field bus RS-485 so as to realize BACnet communication between the sub-control circuit (12) and the building control BACnet system;
the sub-control circuit (12) takes a single chip microcomputer as a core, integrates BACnetMSTP communication, downloadable execution logic programs, input and output information processing, electric signal parameter reading and conversion into BACnet objects and firmware upgrading functions of a BACnet programmable controller, and is respectively connected with the first communication interface (7), the input and output signal conversion circuit (6) and the second communication interface (11) and is responsible for processing input and output information, reading electric signal parameters and converting into BACnet objects and realizing a BACnet communication protocol.
7. The electric meter with BACnet controller function of claim 6, wherein: the power conversion circuit (2) converts AC220V to 12V or 5V voltage required by chip scale devices.
8. The electric meter with the BACnet controller function according to claim 6, wherein the display circuit (4) comprises L CD liquid crystal display and a liquid crystal interface chip, the L CD liquid crystal display is connected with the main control circuit (8) through the liquid crystal interface chip, and the main control circuit (8) displays the received three-phase alternating current on the L CD liquid crystal display through the liquid crystal interface chip.
9. The electric meter with BACnet controller function of claim 6, wherein: the input and output signal conversion circuit (6) comprises a general input port, an analog input port and a relay output port.
10. The electric meter with BACnet controller function of claim 6, wherein: the communication baud rate of BACnet MSTP communication of the sub-control circuit (12) is 76800, 38400, 19200 or 9600.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921202124.2U CN211206586U (en) | 2019-07-29 | 2019-07-29 | Ammeter with BACnet controller function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921202124.2U CN211206586U (en) | 2019-07-29 | 2019-07-29 | Ammeter with BACnet controller function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211206586U true CN211206586U (en) | 2020-08-07 |
Family
ID=71850475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921202124.2U Active CN211206586U (en) | 2019-07-29 | 2019-07-29 | Ammeter with BACnet controller function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211206586U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376408A (en) * | 2019-07-29 | 2019-10-25 | 苏州和欣致远节能科技有限公司 | A kind of ammeter of band BACnet controller function |
-
2019
- 2019-07-29 CN CN201921202124.2U patent/CN211206586U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376408A (en) * | 2019-07-29 | 2019-10-25 | 苏州和欣致远节能科技有限公司 | A kind of ammeter of band BACnet controller function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lutolf | Smart home concept and the integration of energy meters into a home based system | |
| CN205051101U (en) | Intelligent socket | |
| CN211206586U (en) | Ammeter with BACnet controller function | |
| CN103633936B (en) | A kind of photovoltaic header box automatic test system | |
| CN201142577Y (en) | Wireless or CAN bus program controlled remote electric load control module | |
| CN209088984U (en) | The protective relaying device of PROFIBUS and RS485 double-network communication | |
| JP2012235615A (en) | Outlet device, power feeding state monitor, and energization control system | |
| CN208984977U (en) | A kind of novel remote switch amount control device | |
| CN111422091A (en) | Alternating-current charging stake control guidance function detecting system | |
| CN105937129A (en) | Washing machine and communication control system thereof | |
| CN110376408A (en) | A kind of ammeter of band BACnet controller function | |
| CN207050775U (en) | Novel multifunctional electric power instrument | |
| CN211321024U (en) | Embedded distribution transformer monitoring and metering device and distribution room terminal | |
| CN210052032U (en) | Well site sharing intelligent remote terminal control device based on wireless network | |
| CN112953018A (en) | Centralized station terminal equipment based on CAN FD bus architecture | |
| US8995105B2 (en) | Device control modules for demand management systems | |
| CN112991706B (en) | Centralized control type intelligent prepayment system and control method thereof | |
| CN217467511U (en) | BACnet controller with power measurement and diagnosis functions | |
| CN214314716U (en) | Control device, intelligent substation and distribution network of distribution network | |
| CN108594721B (en) | Box transformer substation measurement and control device capable of automatically switching direct current input signal types | |
| CN219778216U (en) | Single-channel IO board card | |
| CN220582660U (en) | Air quantity valve remote monitoring system of central air conditioner | |
| CN204719432U (en) | A kind of hotel guest room intelligent control system | |
| CN220671831U (en) | Data acquisition unit based on 4G wireless communication | |
| CN215067910U (en) | Digital microcomputer protection measurement and control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |