CN211556985U - Intelligent monitoring device for low-voltage alternating-current small bus - Google Patents

Abstract

The utility model relates to an intelligent monitoring device for a low-voltage AC small bus, which comprises a main body module and a current transformer module; the main body module comprises a metering unit, an input/output switching value unit, a leakage current detection unit, a temperature detection unit, an MCU (microprogrammed control unit), a state indicator lamp, a buzzer for alarming and communicating, wherein the metering unit of the main body module obtains a voltage signal and a power supply from a 3-phase 5-wire alternating current bus duct; the input and output switching value unit is a trunk contact input and a trunk relay output; the current transformer module comprises three current transformers and a network port, and the current transformers can be in various shapes such as a straight-through type and an open type; the current transformer module obtains current signals from the bus duct, then accesses the metering unit of the main body module through a network port, and transmits data to the MCU through the SPI after voltage and current signals are processed by the RN7302 chip in the metering unit. The utility model discloses can make up at will according to the demand, realize the complete set ization, reduce cost.

Description

Intelligent monitoring device for low-voltage alternating-current small bus

Technical Field

The utility model relates to a power supply unit technical field especially relates to an intelligent monitoring device in being applied to low pressure alternating current little generating line system starting end case and grafting case.

Background

The current society develops rapidly, and the power consumption of each industry increases sharply, and especially large-scale computer lab, data center etc. the mode of traditional multichannel cable power supply is replaced by the bus duct of more superiority. The weakest link influencing the safe operation of the bus duct at present is the reliability of the bus duct connection part.

Generally, an initial end box is arranged at a wire inlet joint of a bus duct, a jack box is arranged at each branch wire outlet joint, and a breaker is arranged in the jack box. The integration degree of a bus starting end box and a jack box in the market is not high, and if the bus starting end box and the jack box are used in a matching mode in Chinese patent CN210074874U, a common metering instrument and a temperature and humidity detection device are adopted to complete real-time detection of bus electric energy detection and bus duct temperature so as to guarantee reliable operation of buses. The common meter is an 72/96 screen meter or a guide rail meter which is common in the market. The heating temperature detection device scheme of the independent meter is large in size and high in cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome above-mentioned not enough, provide an intelligent monitoring device for low pressure exchanges little generating line, integrate electric energy control and temperature acquisition to reduce the volume of starting end case and jack box, and have nimble extensible advantage, be convenient for install and use reduce cost.

The purpose of the utility model is realized like this:

an intelligent monitoring device for a low-voltage alternating-current small bus comprises a main body module and a current transformer module; the main body module comprises a metering unit, an input/output switching value unit, a leakage current detection unit, a temperature detection unit, an MCU (microprogrammed control unit), a state indicator lamp, a buzzer for alarming and communicating, wherein the metering unit of the main body module obtains a voltage signal and a power supply from a 3-phase 5-wire alternating current bus duct; the input and output switching value unit is a trunk contact input and a trunk relay output; the current transformer module comprises three current transformers and a network port, and the current transformers can be in various shapes such as a straight-through type and an open type; the current transformer module obtains a current signal from the bus duct, then the current signal is accessed to a metering unit of the main body module through a network port, and after the voltage and current signal is processed by an RN7302 chip in the metering unit, data is transmitted to the MCU through the SPI;

the MCU collects field leakage current and temperature data through the leakage current detection unit and the temperature detection unit and controls the indicator lamp to work; the main body module exchanges data with an external monitoring host through an RJ45 interface, and a buzzer is driven to give an alarm when the circuit temperature is too high or the monitored voltage and current data are abnormal.

Further, the main body module is connected with an external micro-power wireless module.

Furthermore, the main body module provides power for the external micro-power wireless module and performs data exchange with an external monitoring host in a wireless mode through the external micro-power wireless module.

Further, the main body module is connected with the display module through the RJ45, and parameters are configured for the main body module.

Furthermore, the main body module and the display module are respectively provided with an in-out two RJ45 interfaces.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model can form a set of intelligent monitoring device with minimum volume and cost only by selecting the main body module and the current transformer module, and the main body module and the current transformer module complete most functions in the AC bus starting box and the plug-in box, thereby ensuring the reliable operation of the bus duct; the main body module only occupies the position of the 2P circuit breaker, and the mutual inductor is selected according to the requirements of customers; if 4 modules are selected, a complete intelligent monitoring device can be formed, a more humanized use scheme is provided, and field wiring is further simplified.

(2) The device of the utility model can be combined at will according to the needs, thereby realizing the complete set, reducing the use space and leading the customers to obtain more functional services with lower cost; meanwhile, the use of the extensible module can better meet the use requirements under different requirements and better meet the market demand.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a functional block diagram of the present invention.

Wherein:

the device comprises a main body module 1, a current transformer module 2, an external micro-power wireless module 3 and a display module 4.

Detailed Description

For better understanding of the technical solution of the present invention, the following detailed description will be made with reference to the accompanying drawings. It should be understood that the following embodiments are not intended to limit the embodiments of the present invention, but only the embodiments of the present invention. It should be noted that the description of the positional relationship of the components, such as the component a is located above the component B, is based on the description of the relative positions of the components in the drawings, and is not intended to limit the actual positional relationship of the components.

Example 1:

referring to fig. 1 to 2, fig. 1 is a schematic structural diagram of the present invention. As shown in the figures, the utility model relates to an intelligent monitoring device for low-voltage alternating current small bus, which comprises a main body module 1 and a current transformer module 2;

the main body module 1 comprises a metering unit, an input/output switching value unit, a leakage current detection unit, a temperature detection unit, an MCU (microprogrammed control unit), a state indicator lamp and a buzzer for alarming and communicating, and the metering unit of the main body module 1 obtains a voltage signal and a power supply from a 3-phase 5-wire alternating current bus duct; the input and output switching value unit is 2 paths of main contact point input and 2 paths of relay output, and the relay output can be configured according to the requirements of customers.

The current transformer module 2 comprises three current transformers and a network port, and the current transformers can be in various shapes such as a straight-through type and an open type; the current transformer module 2 obtains current signals from the bus duct, then accesses the metering unit of the main body module 1 through a network port, and transmits data to the MCU through the SPI after the voltage and current signals are processed by the RN7302 chip in the metering unit.

The MCU collects field leakage current and temperature data through the leakage current detection unit and the temperature detection unit and controls the indicator lamp to work; main part module 1 carries out data interchange through RJ45 interface and outside monitoring host computer, drives the buzzer and reports to the police when circuit temperature is too high or the voltage current data of monitoring are unusual.

Above, main part module 1 and current transformer module 2 can accomplish the most function in alternating current bus starting end case and the jack box, guarantee the reliable operation of bus duct.

In order to further simplify field wiring, the main body module 1 is connected with the external micro-power wireless module 3, the size of the external micro-power wireless module 3 is only 1P, functions such as lora and 4G can be selected, and the module is an optional module. The main body module 1 supplies power to the external micro-power wireless module 3 through a contact pin, and exchanges data with an external monitoring host through the external micro-power wireless module 3 in a wireless mode, so that wired connection at the RJ45 is omitted. If the customer is on-site modified, the main body module 1 is installed, the space of the external micro-power wireless module 3 is not reserved beside the main body module 1, the external micro-power wireless module 3 can be connected through the RJ45 of the main body module 1, and wireless data transmission can be achieved.

The main body module 1 is connected with the display module 4 through the RJ45 to configure parameters for the main body module 1, and the display module 4 is an optional module and is provided with a 4-bit nixie tube, a key and the like; the on-site debugging and inspection of a client are simplified, and the voltage and current data can be displayed in real time, so that the on-site monitoring and overhauling are facilitated.

The main body module 1 and the display module 4 are provided with two RJ45 interfaces which are connected in and out, so that manual wiring of networking is facilitated, and the wiring on site is more attractive and neat.

Only select main part module 1 and current transformer module 2 just can constitute one set of minimum, the lowest intelligent monitoring device of cost of volume, and the main part module only occupies 2P circuit breaker position, and the mutual-inductor is selected according to customer's demand. If 4 modules are selected, a complete intelligent monitoring device can be formed, a more humanized use scheme is provided, and field wiring is further simplified. The utility model can be combined at will, complete set is realized, the use space is reduced, and more functional services can be obtained by customers at lower cost; meanwhile, the use of the extensible module can better meet the use requirements under different requirements and better meet the market demand.

The above is only a specific application example of the present invention, and does not constitute any limitation to the protection scope of the present invention. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.

Claims (5)

1. The utility model provides an intelligent monitoring device for low pressure exchanges little generating line which characterized in that: the current transformer comprises a main body module (1) and a current transformer module (2); the main body module (1) comprises a metering unit, an input/output switching value unit, a leakage current detection unit, a temperature detection unit, an MCU (microprogrammed control unit), a state indicator lamp and a buzzer for alarming and communicating, wherein the metering unit of the main body module (1) obtains a voltage signal and a power supply from a 3-phase 5-wire alternating current bus duct; the input and output switching value unit is 2 paths of main contact point input and 2 paths of relay output; the current transformer module (2) comprises three current transformers and a network port; the current transformer module (2) obtains a current signal from the bus duct, then the current signal is accessed to the metering unit of the main body module (1) through a network port, and after the voltage and current signal is processed by an RN7302 chip in the metering unit, data is transmitted to the MCU through the SPI;

the MCU collects field leakage current and temperature data through the leakage current detection unit and the temperature detection unit and controls the indicator lamp to work; the main body module (1) exchanges data with an external monitoring host through an RJ45 interface, and drives a buzzer to give an alarm when the circuit temperature is too high or the monitored voltage and current data are abnormal.

2. The intelligent monitoring device for the low-voltage alternating-current small bus according to claim 1, characterized in that: the main body module (1) is connected with the external micro-power wireless module (3).

3. The intelligent monitoring device for the low-voltage alternating-current small bus according to claim 2, characterized in that: the main body module (1) provides power for the external micro-power wireless module (3), and performs data exchange with an external monitoring host through the external micro-power wireless module (3) in a wireless mode.

4. The intelligent monitoring device for the low-voltage alternating-current small bus according to claim 1, characterized in that: the main body module (1) is connected with the display module (4) through the RJ45, and parameters are configured for the main body module (1).

5. The intelligent monitoring device for the low-voltage alternating-current small bus according to claim 4, characterized in that: the main body module (1) and the display module (4) are provided with two RJ45 interfaces which are arranged in and out.

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