CN201716851U - Special transformer collecting terminal provided with modularized communication module - Google Patents

Abstract

The utility model discloses a special transformer collecting terminal equipped with a modular communication module, in particular to a device for collecting electric energy information of a special transformer user. It includes a display screen, a main board, a communication interface and wiring terminals. A remote communication module and a signal expansion interface module are installed on the main board. The remote communication module is connected to the remote communication terminal interface on the main board through the base board. A signal receiver is installed on the board. The signal extension interface module is connected with the extension terminal interface on the main board through the connector. The utility model designs the solidified remote communication module and signal expansion interface module in each special variable acquisition terminal in the prior art as a plug-in module, and formulates a unified pin, so that various communication modes can be replaced arbitrarily , The signal expansion interface module design can expand the control interface of the special variable acquisition terminal from 2 channels to 4 channels, and expand its switching signal from 6 channels to 8 channels. This solution greatly reduces the user replacement cost and construction difficulty.

Description

A special variable acquisition terminal equipped with a modular communication module

technical field

The utility model belongs to the electric power industry, and in particular relates to a device for collecting electric energy information of special transformer users.

Background technique

The special transformer collection terminal is a device for collecting power consumption information of special transformer users. It can realize the collection of electric energy meter data, the monitoring of the working condition of electric energy metering equipment and the quality of power supply power, as well as the monitoring of customer power load and electric energy. Data is managed and transferred in both directions. Due to the inconsistency of the communication technical standards of the special variable collection terminal at present, each equipment manufacturer can only choose the communication mode of the collection system according to the needs of users in various places, and design a specific special variable collection terminal communication interface. A special variable collection terminal can only use one With the rapid development of communication technology, users can choose communication technology with fast response speed, good communication effect and low cost at any time according to their work needs. , only by purchasing a new special acquisition terminal or replacing the entire device, which increases unnecessary costs for the user and increases the difficulty of construction for the staff, and the construction volume is large and the cycle is long.

Utility model content

In order to solve the problem in the prior art that the communication module of the special variable collection terminal is single and the communication mode cannot be replaced according to the actual situation, the utility model provides a new special variable collection terminal with a modular design for the remote communication interface, ensuring that the special variable collection terminal can be used The various remote communication modules are interchangeable, and the specific scheme is as follows: a special variable acquisition terminal installed with modular communication modules, including a display screen installed on the shell, a main board installed inside, a communication interface connected to the main board and The connection terminal is characterized in that a remote communication module and a signal expansion interface module are installed on the main board, the remote communication module is connected to the remote terminal interface on the main board through the base board, a signal receiver is installed on the base board, and the The signal extension interface module is connected with the extension terminal interface on the main board through the connector.

Another preferred mode of the present utility model: the remote terminal interface is a double-row 30-pin socket, and the extended terminal interface is a double-row 16-pin socket.

Another preferred mode of the present utility model: the remote communication module is any one of 230MHz private network, GPRS wireless public network, CDMA wireless public network or Ethernet chip.

The utility model redesigns the communication module solidified in each special variable acquisition terminal in the prior art, designs the remote communication module and the signal expansion interface module as plug-in modules, formulates unified pins, and specifies in detail The meaning of each pin, and then design various standard communication channels according to the interface of the communication module, install various communication chips on the unified communication module, so that various communication methods can be replaced arbitrarily, when the user needs to change the remote communication Mode, only need to plug in and replace the corresponding communication module, so that the user can configure the number of remote control signal and switch signal according to the needs. The signal expansion interface module design can expand the control interface of the special variable acquisition terminal from 2 channels to 4 channels, and expand its switch signal from 6 channels to 8 channels. The local communication mode of the specific variable collection terminal can be changed arbitrarily in this solution, which greatly reduces the cost of user replacement and construction difficulty, ensures that the remote communication modules used by the special variable collection terminal are interchangeable, and is designed to standardize the technical standards of the special variable collection terminal. Promote the construction, operation, and maintenance of power users' electricity information collection systems to provide technical support.

Description of drawings

Figure 1 is a schematic diagram of the installation of the special variable acquisition terminal of the utility model

Figure 2 Schematic diagram of the pins of the remote communication module of the special transformer acquisition terminal

Figure 3 Schematic diagram of the signal expansion interface module of the special transformer collection terminal

Detailed ways

The special variable acquisition terminal of the present utility model includes a main board 1, a power supply, a remote communication module 3, and a signal expansion interface module 7 installed in the box body, and there are liquid crystal displays, buttons, indicator lights, wiring terminals and communication interfaces, etc. outside the box body. As shown in Figure 1, in the design of the special variable acquisition terminal, the remote communication module and the signal expansion interface module are modularized in this scheme. The signal expansion interface module 7 is placed on the left side of the middle part of the special variable 3 is plugged into the right side of the middle part of the main board through the base board 2, and the communication interface 5 and connection terminals are connected to the main board.

The remote communication method can choose any one of 230MHz private network, GPRS wireless public network, CDMA wireless public network and Ethernet. In order to make a specific variable acquisition terminal adapt to different remote communication methods, this program adopts modular design for various remote communication modules GPRS module/CDMA module/PSTN module/network module/230M radio station/optical fiber module, which can be directly interchanged. The remote communication module 3 is plugged into the interface of the main board through the base plate 2, and the remote communication module with a modular structure design can facilitate users to choose different communication methods according to the needs of on-site work. The communication chips of each communication mode are made into modules of uniform specifications. As shown in Figure 2, the remote communication module uses 2×15 double-row pins as connectors, and the remote terminal interface 4 on the main board adopts 2×15 double-row pins. sockets as connectors. The lower left corner of the connector on the terminal interface board is pin 1. See Table 1 for the definition of the remote communication module interface pins.

Table 1. Remote communication module pin definition table

Terminal interface board Corresponding pins of the module Signal category Signal name Signal direction (for modules) illustrate pin number serial number 1, 3, 5 1, 3, 5 power supply VDD5v power input Communication module power input, 5V±0.25V, instantaneous maximum current 1.5A 2 2 power ground GND power input Communication module power ground input 4 4 USB USB-HP USB differential signal USB HOST+ 6 6 USB USB-HN USB differential signal USB HOST- 7 7 power ground GND power input Communication module power ground input 8 8 serial signal RXD output Module serial port output signal (3.3V/TTL) 9 9 serial signal TXD input Module serial port input signal (3.3V/TTL) 10 10 output signal 1 output Module serial port output signal (3.3V/TTL)

11 11 output signal 2 output Module serial port output signal (3.3V/TTL) 12 12 output signal 3 output Module serial port output signal (3.3V/TTL) 13 13 input signal 1 input Module serial port input signal (3.3V/TTL) 14 14 input signal 2 input Module serial port input signal (3.3V/TTL) 15 15 module control RST enter Communication module reset control signal, when it is "0", the communication module is in reset state (3.3V/TTL) 16 16 input signal ON/OFF input Module on/off signal input 17 17 power ground GND power input Communication module power ground input 18 18 Status recognition STATE0 output Module Type Identification 19 19 Status recognition STATE1 output Module Type Identification 20 20 Status recognition STATE2 output Module Type Identification twenty one twenty one Status recognition STATE3 output Module Type Identification twenty two twenty two Status recognition STATE4 output Module Type Identification twenty three twenty three power supply VCC3v3 power input Logic circuit power supply, 3.3V±0.3V, maximum current 50mA twenty four twenty four power supply GND power input Communication module power ground input 25 25 Internet signal TD+ network differential signal Ethernet send 26 26 Internet signal TD- network differential signal Ethernet send 27 27 Internet signal RD+ network differential signal Ethernet receiving 28 28 Internet signal RD- network differential signal Ethernet receiving 29 29 Internet signal /LED_ACT enter Network indicator input signal, active low, indicating that data is being transmitted on the network. 30 30 Internet signal /LED_LINK enter Network indicator input signal, active low, indicating that the network physical connection has been established.

Because this solution makes 230MHz private network, GPRS wireless public network, CDMA wireless public network, Ethernet and other communication chips into unified specification remote communication modules, users can install corresponding remote communication modules according to the local network conditions, as local communication When the mode is changed, unplug the unnecessary remote communication module and replace it with the corresponding remote communication module to complete the replacement of the new network.

The signal expansion interface module of this program uses 2×8 double-row pins as connectors, and the signal expansion interface module uses the conversion circuit to expand the 2-way control interface output by the original main board to 4-way, and expand its switching signal from 6 to 4. 8 way. As shown in FIG. 3 , the extended terminal interface 6 on the main board uses 2×8 double-row jacks as connectors. The pin on the lower left corner of the connector on the terminal interface board is pin 1. The interface pins of the signal expansion interface module are defined in the following table.

Table 2. Pin definition of signal expansion interface module

Claims (3)

1. A special variable acquisition terminal for installing a modular communication module, comprising a display screen installed on the shell, an internal main board (1), a communication interface connected to the main board and a wiring terminal, it is characterized in that the main board (1) is equipped with a remote communication module and a signal expansion interface module (7), the remote communication module is connected to the remote terminal interface (4) on the main board through the substrate (2), and the signal is installed on the substrate (2) The receiver (5), the signal extension interface module (7) is connected with the extension terminal interface (6) on the main board through a connector. 2. The specific variable acquisition terminal according to claim 1, wherein the remote terminal interface (4) is a double-row 30-pin socket, and the expansion terminal interface (6) is a double-row 16-pin socket. 3. special variable acquisition terminal as claimed in claim 2, is characterized in that, described remote communication module (5) is any one in 230MHz private network, GPRS wireless public network, CDMA wireless public network or Ethernet chip.

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