Two-bus system bus temperature measurement sensing system

Abstract

The utility model relates to the field of power bus temperature measurement, in particular to a bus temperature measurement sensing system of a two-bus system. Comprising a monitoring background, a two-bus collector and a two-bus sensor. The two-bus sensor is used for collecting the bus temperature; the two-bus collector is connected with the two-bus sensor through a two-bus and provides power supply and communication for the two-bus sensor; and the two-bus collector is connected with the monitoring background. The two-bus system bus temperature measurement sensor is compact in structure and small in occupied area, can be directly prefabricated on a bus duct, and is convenient to construct and install. The system can adapt to the on-site long-distance communication function, reduces the construction wiring, and reduces the maintenance cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of power bus temperature measurement, in particular to a bus temperature measurement sensing system of two bus system. BACKGROUND

[0002] The bus temperature measurement product is an important component of the bus duct system, and with the development of digitization, it has also become an indispensable component in the bus duct accessories. Although in the prior art, the bus duct temperature measurement has three categories of wired, wireless and temperature sensing optical fiber, the market requirements for the modularization and integration of the temperature measurement product are also increasing. The bus temperature measurement layout is complex, the communication distance is long, and the communication stability is considered. In the existing concentration, the common wired temperature measurement product uses RS485 communication mode, but the existing bus mode has the defects of single topology type, high connection cable requirement, huge wired laying engineering, and easy to be damaged artificially. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the problems of limited wiring demand and unstable communication of the bus temperature measurement product, a bus temperature measurement sensor product using two buses is proposed, which can realize various topology networking modes such as star type, tree type and bus type. Only ordinary two-core twisted pair line is needed to complete the hardware connection of the product. One two bus can access 256 temperature measurement products, the communication length can reach 1000 meters, and the maximum can be expanded to 3000 meters. At the same time, the sensor product can be directly prefabricated on the bus duct and shipped together with the bus duct, saving the construction and cable cost, and bringing great convenience to the site construction and later maintenance.

[0004] The utility model provides a kind of bus temperature measurement sensing system of two bus system, including monitoring background, two bus collector, two bus sensor;The two bus sensor is used to collect bus temperature;Two bus collector is connected with two bus sensor by two bus, and provides power supply and communication for two bus sensor;Two bus collector is connected with monitoring background.

[0005] Preferably, two bus collector is connected with monitoring background by touch screen, and touch screen is used to display data and control two bus collector.

[0006] Preferably, two bus sensor includes two bus module, MCU, JTAG interface supporting SWD mode;The MCU is used to collect bus temperature, two bus module is connected with MCU, and is used to connect two bus, to provide power supply and communication for MCU;JTAG interface supporting SWD mode is connected with MCU, and is used to online debugging and simulation for MCU.

[0007] Preferably, the MCU includes GD32F303RC chip.

[0008] Preferably, the two-bus module comprises a PB332 chip.

[0009] Advantages:

[0010] 1. The bus temperature sensor of the two-bus system has compact structure, small footprint, can be directly prefabricated on the bus duct, and is convenient for construction and installation.

[0011] 2. The two-bus system can supply power, modulate control signals on the power supply cable, and does not need electrical isolation for communication and power supply, thereby having strong anti-interference capability.

[0012] 3. The two-bus system can adapt to on-site long-distance communication, reduces construction wiring, and reduces maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a system structure diagram in the utility model;

[0014] Figure 2 is a two-bus sensor structure diagram in the utility model; DETAILED DESCRIPTION

[0015] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical solutions in the utility model embodiments will be described clearly and completely in combination with the drawings in the utility model embodiments. Obviously, the following described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0016] As shown in Figure 1 , a bus temperature sensor system of two-bus system comprises a monitoring background, a two-bus collector and a two-bus sensor. The two-bus sensor is used for collecting bus temperature. The two-bus collector is connected with the two-bus sensor through two buses, and provides power supply and communication for the two-bus sensor. The two-bus collector is connected with the monitoring background through a touch screen. The touch screen is used for displaying data and controlling the two-bus collector.

[0017] As shown in Figure 2 , in a further embodiment, the two-bus sensor comprises a two-bus module, an MCU and a JTAG interface supporting SWD mode. The MCU is used for collecting bus temperature. The two-bus module is connected with the MCU, and is used for connecting two buses to provide power supply and communication for the MCU. The JTAG interface supporting SWD mode is connected with the MCU, and is used for online debugging and simulation of the MCU.

[0018] In the scheme, the two-bus sensor is powered directly by the two-bus, collects temperature information at the connection of the bus, and is connected to the two-bus collector through serial communication of the two-bus, and is regulated by the two-bus collector to realize the automatic addressing function of batch sensors; the two-bus collector is connected with the touch screen with corresponding protocol through the RS485 bus, transmits data collection information, and realizes data display and processing in a small range; the touch screen communicates with the monitoring background through the 485 channel or Modbus TCP communication technology, uploads data quickly, and displays and processes all range data on the monitoring background server. When the temperature measuring product on the bus needs to be increased, the communication of the architecture can also be used for rapid layout, online updating of the address of the sensor product, and rapid expansion of the temperature measuring information.

[0019] In the embodiment, the MCU selects the GD32F303RC chip with ARM Cotex kernel, is responsible for managing all hardware resources, and realizes functions such as collection, communication, control and debugging.

[0020] The two-bus module selects the PB332 chip of domestic POWERBUS bus power supply technology. The external interface adopts the two-bus, which is a kind of direct current low voltage power carrier communication technology combining the power line and the signal line into one, realizes power supply and communication for the sensor, and can greatly reduce the field wiring; the voltage sending and current signal returning mode is adopted, and high communication anti-interference ability is provided.

[0021] When programming the MCU, online debugging and simulation are needed, so a 5-pin JTAG debugging interface is designed, which supports SWD mode, and can realize online debugging and simulation operation by using JLINK emulator, realizes software and hardware joint debugging, and improves the efficiency of later development.

[0022] The above only describes preferred embodiments of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be regarded as the protection range of the present application.

Claims

1. A two-bus temperature sensing system for busbars, characterized by comprising: The monitoring background, the two-bus collector and the two-bus sensor are included; the two-bus sensor is used for collecting the bus temperature; the two-bus collector is connected with the two-bus sensor through the two-bus, and provides power supply and communication for the two-bus sensor; the two-bus collector is connected with the monitoring background.

2. The bus temperature sensing system according to claim 1, wherein The two-bus collector and the monitoring background are connected through the touch screen, and the touch screen is used for displaying data and controlling the two-bus collector.

3. The bus temperature sensing system according to claim 1, wherein The two-bus sensor includes a two-bus module, an MCU and a JTAG interface supporting SWD mode; the MCU is used for collecting the bus temperature; the two-bus module is connected with the MCU, and is used for connecting the two-bus and providing power supply and communication for the MCU; The JTAG interface supporting SWD mode is connected with the MCU, and is used for online debugging and simulation of the MCU.

4. The bus temperature sensing system according to claim 3, wherein The MCU includes a GD32F303RC chip.

5. The bus temperature sensing system according to claim 3, wherein The two-bus module includes a PB332 chip.

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