CN214427782U - Laboratory end return circuit automatic switching controller - Google Patents

Abstract

The utility model provides a laboratory end return circuit automatic switching controller, include: the circuit fault detection device comprises a loop control module, a loop control switch, a loop fault acquisition module, a main supply and standby supply contact switching module, a main supply control loop, a standby supply control loop and a drive control module; the loop control module is connected with the loop fault acquisition module; the main power supply and standby power supply contact switching module is respectively connected with the loop control switch, the loop fault acquisition module, the main power supply control loop and the standby power supply control loop; the driving module is connected with the loop control module and the main and standby power supply contact switching module. The utility model discloses a carry out effective collection and analysis to return circuit trouble information, the fault point is accurately found to realize the return circuit and switch in the time of the back utmost point weak point appearing in the trouble, can effectively guarantee consumer's reliability, improve the efficiency of circuit maintenance, guarantee maintenance personal's personal safety.

Description

Laboratory end return circuit automatic switching controller

Technical Field

The utility model belongs to the circuit control field, concretely relates to terminal return circuit automatic switching controller in laboratory.

Background

The most important of the automatic transfer switching device is to ensure the reliability of the electricity consumption of important electric equipment, and the circuit is timely transferred under the condition that a common loop breaks down, so that the stable operation of the electric equipment is ensured.

Although the existing automatic change-over switch can achieve the effect of switching, the defects of overlong switching time, obvious power failure time in the switching process and the like still exist, in addition, the circuit maintenance and repair work after the switching is usually carried out by operators to detect the electric equipment one by one, so that the efficiency is low, and the danger is high.

SUMMERY OF THE UTILITY MODEL

To the above defect of prior art or improve the demand, the utility model provides a terminal return circuit automatic switching controller in laboratory through effectively gathering and the analysis return circuit fault information, accurately finds the fault point to realize the return circuit and switch in the time of the back is extremely short after the trouble appears, can effectively guarantee consumer's reliability, improve the efficiency of circuit maintenance, guarantee maintenance personal's personal safety.

In order to achieve the above object, the utility model provides a following scheme: the utility model provides a laboratory end return circuit automatic switching controller, include: the circuit fault detection device comprises a loop control module, a loop control switch, a loop fault acquisition module, a main supply and standby supply contact switching module, a main supply control loop, a standby supply control loop and a drive control module;

the loop control module is connected with the loop fault acquisition module;

the main power supply and standby power supply contact switching module is respectively connected with the loop control switch, the loop fault acquisition module, the main power supply control loop and the standby power supply control loop;

the driving module is connected with the loop control module and the main and standby power supply contact switching module.

Preferably, the loop fault acquisition module acquires current, temperature, power factor, reactive power, active power and frequency data of a loop and transmits the data to the loop control module in real time.

Preferably, the loop control module is controlled by a program control chip CPU, and the program control chip CPU is a PIC16C71 single chip microcomputer, and is configured to analyze data collected by the loop fault collection module and determine an abnormal operation condition of the loop.

Preferably, the loop fault collection module includes a current and voltage collection module, a temperature sensor and a leakage detection device, and is configured to collect current, voltage, temperature and leakage data of the loop.

Preferably, the current and voltage acquisition module adopts a DL-42123-14 current and voltage synchronous acquisition device and adopts a high-precision 24-bit AD differential mode to acquire and measure, and the current and voltage acquisition module is divided into 12 paths of direct current voltage and 12 paths of direct current input;

the current and voltage acquisition module adopts a standard RS-485 bus interface and an MODBUS-RTU protocol.

Preferably, the leakage detecting device is connected with the metal casing of the electrical equipment of the main power supply control circuit through a test probe, and when the potential of the test probe is different from the ground potential, the metal casing of the electrical equipment is electrified.

Preferably, the temperature sensor adopts an MIK-AL-10 industrial non-contact temperature sensor;

the temperature sensor adopts an infrared measurement and control method, and can detect the heating condition and the fault position.

Preferably, the drive control module is driven by a gear motor;

the drive control module switches instant on current at the main supply and standby supply contact switching module when the motor is driven, and does not switch on current at a steady state.

Preferably, the loop control switch, the loop fault acquisition module, the main and standby power supply contact switching module, the main and standby power supply control loops and the standby power supply control loop form a power supply loop;

the power supply loops can be arranged into one or more groups according to requirements.

Preferably, the switching time of the main and backup power supply contact switching module is less than 0.02 second.

The utility model discloses a following technological effect:

(1) the utility model adopts the current and voltage acquisition module, the temperature sensor and the leakage detection device to effectively acquire and analyze the loop fault information, accurately find the fault point and realize the loop switching within 0.02 second after the fault occurs, thereby effectively ensuring the reliability of the electric equipment, improving the efficiency of circuit maintenance and ensuring the personal safety of maintenance personnel;

(2) the utility model discloses switching to when being equipped with the supply circuit from main supply circuit, for preventing that stand-by power supply is undulant or decompression in the commercial power transient state, the utility model discloses a main supply is equipped with and is supplied the contact switching module to have the time delay and detect the function, specifically is 1 ~ 8s, and preferably 3s has 120 s' time delay simultaneously when stand-by power supply conversion to power supply commonly used to confirm that main supply circuit resumes normal and stable power supply.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and 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 labor.

FIG. 1 is a schematic diagram of an automatic switching controller for a laboratory end loop according to the present invention;

fig. 2 is a schematic view of an electrical system of the laboratory terminal loop automatic switching controller of the present invention, wherein: 1. the system comprises a loop control module 2, a loop control switch 3, a loop fault acquisition module 4, a main supply and standby supply contact switching module 5, a main supply control loop 6 and a standby supply control loop.

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 work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, the utility model provides a laboratory end loop automatic switching controller, include: the system comprises a loop control module 1, a loop control switch 2, a loop fault acquisition module 3, a main supply and standby supply contact switching module 4, a main supply control loop 5, a standby supply control loop 6 and a drive control module;

the loop control module 1 is connected with the loop fault acquisition module 3;

the main supply and standby supply contact switching module 4 is respectively connected with the loop control switch 2, the loop fault acquisition module 3, the main supply control loop 5 and the standby supply control loop 6;

the driving module is connected with the loop control module 1 and the main and standby contact switching module 4;

the loop control switch 2, the loop fault acquisition module 3, the main and standby power supply contact switching module 4, the main and standby power supply control loop 5 and the standby power supply control loop 6 form a power supply loop; the power supply loops can be arranged into one or more groups according to requirements.

The loop fault acquisition module 3 acquires current, temperature, power factor, reactive power, active power and frequency data of a loop and transmits the data to the loop control module 1 in real time, the loop control module 1 is controlled by a CPU, and a program control chip CPU is controlled by a PIC16C71 singlechip and is used for analyzing the data acquired by the loop fault acquisition module 3 and judging abnormal operation conditions of the loop.

The loop fault acquisition module 3 comprises a current and voltage acquisition module, a temperature sensor and a leakage detection device, the current and voltage acquisition module adopts a DL-42123-14 current and voltage synchronous acquisition device, adopts a high-precision 24-bit AD differential mode for acquisition and measurement, divides 12 paths of direct current voltage and 12 paths of direct current input, adopts a special measurement chip for signal measurement, can accurately measure various direct current signals, and has good anti-interference performance, high precision and good stability; the standard RS-485 bus interface and the MODBUS-RTU protocol are adopted, and the method can be widely applied to street lamp monitoring, production automation detection, LED lamp aging detection and the like.

The temperature sensor adopts a Mike MIK-AL-10 industrial non-contact temperature sensor, can measure objects which are difficult to approach or move, can measure the high-speed temperature of an electric appliance for 50ms and 300ms, adopts an infrared measurement and control method, can preliminarily judge the heating condition and the fault position by an operator through image color displayed on a screen and a hotspot tracking and displaying function, and then carries out subsequent analysis, thereby confirming the problem with high efficiency and high accuracy.

The electric leakage detection device is connected with the metal shell of the electrical equipment of the main power supply control circuit through the test probe, and when the potential difference exists between the potential of the test probe and the ground potential, namely the metal shell of the electrical equipment is electrified, namely the metal shell of the electrical equipment to be detected is electrified, the electric leakage detection device prompts operators.

The drive control module adopts a gear motor, the gear motor has strong humidity resistance and heat resistance and high temperature resistance, the safety protection function is good, current only passes through the drive control module at the moment of switching of a switch when the motor is driven, working current is not required to be supplied at a steady state, and energy is saved remarkably.

When the loop control module 1 judges that the main supply control circuit 5 has a fault after analyzing data acquired by the loop fault acquisition module 3, the driving motor is controlled to control the main supply and standby supply contact switching module to switch 4 in 0.02 second, and the switching is carried out to the standby supply control circuit 6, so that safe, rapid and convenient switching is realized.

When switching from the main supply loop to the standby supply loop, in order to prevent the standby power supply from transient fluctuation or voltage loss of the mains supply, the main supply and standby supply contact switching module 4 of the embodiment has a delay detection function, specifically 1-8 s, preferably 3s, and meanwhile, when the standby power supply is switched to the common power supply, the delay of 120s is provided to confirm that the main supply loop recovers normal and stable power supply;

the above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and those skilled in the art should also be able to make various modifications and improvements to the technical solution of the present invention without departing from the spirit of the present invention, and all such modifications and improvements are intended to fall within the scope of the present invention as defined in the appended claims.

Claims (10)

1. A laboratory end loop automatic switching controller, comprising: the circuit fault detection device comprises a loop control module, a loop control switch, a loop fault acquisition module, a main supply and standby supply contact switching module, a main supply control loop, a standby supply control loop and a drive control module;

the loop control module is connected with the loop fault acquisition module;

the main power supply and standby power supply contact switching module is respectively connected with the loop control switch, the loop fault acquisition module, the main power supply control loop and the standby power supply control loop;

the drive control module is connected with the loop control module and the main and standby power supply contact switching module.

2. The laboratory end loop automatic switching controller of claim 1, wherein said loop fault collection module collects loop current, temperature, power factor, reactive power, active power and frequency data and transmits them to said loop control module in real time.

3. The automatic conversion controller for the laboratory tail end loop according to claim 1, wherein the loop control module is controlled by a program control chip CPU, and the program control chip CPU is a PIC16C71 single chip microcomputer and is used for analyzing the data collected by the loop fault collection module and judging the abnormal operation condition of the loop.

4. The laboratory end loop automatic switching controller of claim 1, wherein the loop fault collection module comprises a current and voltage collection module, a temperature sensor and a leakage detection device for collecting current, voltage and temperature and leakage data of the loop.

5. The laboratory end loop automatic switching controller according to claim 4, wherein the current and voltage acquisition module adopts a DL-42123-14 current and voltage synchronous acquisition device and adopts a high-precision 24-bit AD differential mode to acquire and measure, and divides 12 direct current voltage and 12 direct current input;

the current and voltage acquisition module adopts a standard RS-485 bus interface and an MODBUS-RTU protocol.

6. The laboratory end loop automatic switching controller according to claim 4, wherein the leakage detecting means is connected to the electrical equipment metal case of the main supply control loop through a test probe, and when there is a potential difference between the potential of the test probe and the ground potential, the electrical equipment metal case is charged.

7. The laboratory end loop automatic switchover controller of claim 4, wherein said temperature sensor is an MIK-AL-10 industrial non-contact temperature sensor;

the temperature sensor adopts an infrared measurement and control method, and can detect the heating condition and the fault position.

8. The laboratory end loop automatic switch controller of claim 1, wherein said drive control module is driven by a geared motor;

the drive control module switches instant on current at the main supply and standby supply contact switching module when the motor is driven, and does not switch on current at a steady state.

9. The laboratory end loop automatic switching controller according to claim 1, wherein said loop control switch, said loop fault collection module, said main supply and backup supply contact switching module, said main supply control loop and said backup supply control loop constitute a power supply loop;

the power supply loops can be arranged into one or more groups according to requirements.

10. The laboratory end loop automatic transfer controller of claim 1, wherein a switching time of said main and backup supply contact switching module is less than 0.02 seconds.

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