CN201724969U - Intelligent measurement display device of switch cabinet - Google Patents

Abstract

The utility model discloses an intelligent measuring and displaying device for a switchgear, which mainly solves the lack of detection of the temperature of the cable head and the contact in the existing switchgear control device, and the lack of detection of the voltage of the circuit breaker control circuit, which may cause safety problems. A technical problem with the accident. The gist of the technical solution is: an intelligent display device for switchgear, including a microcomputer control module, a power supply module, and a wireless temperature sensor, a wireless receiving module and a circuit breaker control circuit voltage measurement module. The wireless temperature sensor will The collected temperature information is sent to the wireless receiving module, and the wireless receiving module and the circuit breaker control circuit voltage measurement module are respectively connected with the microcomputer control module. The utility model detects the voltage of the circuit breaker control circuit and the temperature of the cable head and the contact, so that the function of the switchgear is more perfect and the operation is safer.

Description

Intelligent measurement and display device for switchgear

technical field

The utility model relates to a switchgear used in the electric field, more specifically, the utility model relates to an intelligent measuring and displaying device for a switchgear with higher safety performance.

Background technique

With the development of China's economy and the establishment of various large-scale factories, the demand for electric energy is increasing, which promotes the development of the electric power industry. At present, the switchgear used in the power industry not only has basic functions such as dynamic primary simulation diagram display, temperature and humidity measurement and control, but also has functions such as comprehensive power parameter measurement, power grid quality analysis and power protection, and its functions are becoming more and more perfect.

Announcement date: January 7, 2009, the Chinese patent with the announcement number CN201178245Y discloses a switchgear control device with a protection control unit, including an intelligent platform, which is connected with a current sampling and measurement unit, a clock unit, and a switching value input respectively. Unit, switch output unit, storage unit, voice prompt unit, infrared meter reading unit, human body induction unit and temperature and humidity measurement and control unit are connected, and the intelligent platform is also connected with the key to input the signal for controlling the working state of the switch cabinet control device, and connected with the intelligent platform The display output unit outputs and displays the working state information of the switch cabinet control device. The switchgear control device not only has the common functions of dynamic primary simulation diagram, temperature and humidity measurement and control, but also has the functions of comprehensive power parameter measurement, power grid quality analysis and power protection. In the switchgear, the cable head and the contact are the problem-prone areas. If the cable head is not assembled properly or the contact is not in good contact, the contact impedance will increase. When a large current flows, it may cause excessive temperature rise. safety accident, but the control device of the switch cabinet lacks a device for detecting the temperature of the cable head and the contact; in the switch cabinet, the opening and closing of the circuit breaker is driven by the control circuit. When protection is required, the circuit breaker cannot be disconnected normally, which will inevitably lead to safety accidents, and the switchgear control device lacks a device for detecting the voltage of the circuit breaker control circuit.

Contents of the invention

The utility model mainly solves the technical problem that the existing switchgear control device lacks the detection of the temperature of the cable head and the contact, the lack of detection of the voltage of the circuit breaker control circuit, which may cause safety accidents; it provides a device capable of detecting the cable An intelligent measuring and displaying device for switchgear that detects the temperature of the head and contacts, and detects the voltage of the circuit breaker control circuit.

In order to achieve the above purpose, the utility model adopts the following technical scheme: an intelligent display device for switchgear, including a microcomputer control module, a power supply module, and the microcomputer control module is connected with the main circuit power parameter measurement module, liquid crystal display module and output module respectively. , voice prompt module, RS485 communication module, human body sensing module, three-phase electrified display module, button module and temperature and humidity measurement and control module are connected, the power module provides power for each module, and also includes: wireless temperature sensor, wireless receiving module and circuit breaker control The circuit voltage measurement module, the wireless temperature sensor sends the temperature signal collected to the wireless receiving module, and the wireless receiving module and the circuit breaker control circuit voltage measurement module are respectively connected with the microcomputer control module.

The switchgear intelligent measurement and display device described in the utility model sends the voltage data of the circuit breaker control circuit to the microcomputer control module after being collected and converted by the circuit breaker control circuit voltage measurement module, and the microcomputer control module performs calculations, and finally through the liquid crystal display module Displayed, and automatically monitor whether the voltage is normal; the wireless temperature sensor sends the collected temperature signal to the wireless receiving module after processing, and the wireless receiving module immediately sends the data to the microcomputer control module, and the microcomputer control module After calculation, it is finally displayed through the liquid crystal display module, and automatically monitors whether the temperature is normal.

As preferably, the wireless temperature sensor includes a temperature sensor, a data acquisition module, a wireless transmission module and a battery, the temperature sensor is electrically connected to the data acquisition module, the data acquisition module is electrically connected to the wireless transmission module, and the battery is the wireless temperature sensor. Each module provides power. Because there are many cable heads or contacts that need to be monitored, and these cable heads or contacts have high voltage, the use of wireless temperature sensors has the following advantages: it can reduce the number of connecting wires and make the interior of the switch cabinet more concise; isolation between high voltage and low voltage Come on, it's safer.

Preferably, the temperature sensor is attached to the surface of the cable head or the contact installed in the switch cabinet. The temperature sensor is attached to the surface of the cable head or contact installed in the switch cabinet, and can collect the temperature of the cable head or contact in time and accurately.

Beneficial effects of the utility model: the utility model detects the voltage of the control circuit of the circuit breaker, and wirelessly detects the temperature of the cable head and the contact, so as to avoid the occurrence of the out-of-control situation of the circuit breaker, and avoids The temperature is too high and cause safety accidents, so that the function of the switchgear is more perfect and the operation is safer.

Description of drawings

Fig. 1 is a kind of system structural diagram of the utility model;

Fig. 2 is a structural block diagram of the wireless temperature sensor of the present invention.

Detailed ways

The technical solutions of the present utility model will be further described below through the embodiments and in conjunction with the accompanying drawings.

Embodiment: The switchgear intelligent measuring and displaying device of the present embodiment is shown in Figure 1, comprises microcomputer control module 1, power supply module 7, and microcomputer control module 1 is respectively connected with main circuit power parameter measurement module 5, liquid crystal display module 6, The output module 9, the voice prompt module 4, the RS485 communication module 11, the human body induction module 8, the three-phase charged display module 3, the button module 13 and the temperature and humidity measurement and control module 12 are connected, and the power module 7 provides power for each module, and also includes: wireless Temperature sensor 10, wireless receiving module 14 and circuit breaker control circuit voltage measurement module 2, described wireless temperature sensor 10 sends the temperature signal collected to wireless receiving module 14 in the form of radio waves, wireless receiving module 10 and circuit breaker control The circuit voltage measurement modules 2 are electrically connected to the microcomputer control modules 1 respectively.

In the present embodiment, wireless temperature sensor 10 is made up of temperature sensor 16, data acquisition module 15, wireless transmission module 17 and battery 18, and temperature sensor 16 is electrically connected with data acquisition module 15, and data acquisition module 15 is connected with wireless transmission module 17 Electrically connected, the battery 18 provides power for each module on the wireless temperature sensor 10 .

In this embodiment, the circuit breaker control circuit voltage measurement module 2 samples the power supply voltage of the circuit breaker control circuit through resistor division, and the signal is clamped by the Zener diode to prevent the chip from being damaged due to overvoltage. The collected voltage signal is passed through the VF After the conversion, it is sent to the microcomputer control module 1, and the microcomputer control module 1 performs calculations, and finally displays it through the liquid crystal display module 6, and automatically monitors whether the voltage is normal. Once the voltage exceeds the normal range, it will emit sound and light through the output module 9 Alarm.

In this embodiment, the temperature sensor 16 is attached to the surface of the cable head and the contact installed in the switch cabinet, and the temperature information of the cable head or the contact is collected in a timely and accurate manner. Pass to wireless sending module 17 after processing, and wireless sending module 17 sends data to wireless receiving module 14 with the form of radio wave again, after wireless receiving module 14 receives data, sends data to microcomputer control module 1 immediately, microcomputer The control module 1 automatically monitors whether the temperature is normal after internal calculation, and immediately sends the information in three ways: through the liquid crystal display module 6, it displays the temperature status of the detected cable head or contact; through the output module 9, it uses the switch value Send the signal to the customer's monitor; send the temperature signal through the RS485 communication module 11.

In this embodiment, the frequency of the radio wave sent by the wireless sending module is 433 MHz, which is in the public frequency band and does not need to apply to the Radio Regulatory Commission.

In this embodiment, the function of the switchgear is more complete and the operation is safer. The implementation process is as follows: The circuit breaker control circuit voltage measurement module 2 samples the power supply voltage of the circuit breaker control circuit in real time, and sends the collected voltage signal to To the microcomputer control module 1, the microcomputer control module 1 monitors the voltage, once the voltage exceeds the normal range, it will be displayed by the liquid crystal display module 6, and an acousto-optic alarm prompt will be sent through the output module 9; the wireless temperature sensor 10 pairs The temperature of the cable head and the contact is sampled in real time, and the collected temperature signal is sent to the microcomputer control module 1 in the form of radio waves. The microcomputer control module 1 monitors the temperature. Once the temperature exceeds the normal range, it will pass The liquid crystal display module 6 displays the abnormal temperature information, and sends the abnormal temperature information to the customer's monitor through the output module 9, and sends out an audible and visual alarm prompt; at the same time, it also sends the abnormal temperature information through the RS485 communication module 11. go out.

The preferred embodiments of the present utility model have been described above in conjunction with the accompanying drawings, but the present utility model is not limited to the above-mentioned specific implementation, and the above-mentioned specific implementation is only illustrative, rather than restrictive. Under the enlightenment of the utility model, those skilled in the art can also make many forms without departing from the purpose of the utility model and the protection scope of the claims, and these all belong to the protection scope of the utility model. All components that are not specified in this embodiment can be realized by existing technologies.

Claims (3)

1. An intelligent display device for a switchgear, comprising a microcomputer control module (1), a power supply module (7), the microcomputer control module (1) and the main circuit power parameter measurement module (5), liquid crystal display module (6) ), output module (9), voice prompt module (4), RS485 communication module (11), human body sensing module (8), three-phase live display module (3), button module (13) and temperature and humidity measurement and control module (12 ) electrical connection, the power supply module (7) provides power for each module, it is characterized in that it also includes: a wireless temperature sensor (10), a wireless receiving module (14) and a circuit breaker control circuit voltage measurement module (2), the wireless The temperature sensor (10) sends the collected temperature signal to the wireless receiving module (14), and the wireless receiving module (14) and the circuit breaker control circuit voltage measurement module (2) are respectively connected with the microcomputer control module (1). 2. The switchgear intelligent measurement and display device according to claim 1, characterized in that the wireless temperature sensor (10) includes a temperature sensor (16), a data acquisition module (15), a wireless transmission module (17) and The battery (18), the temperature sensor (16) are electrically connected to the data acquisition module (15), the data acquisition module (15) is electrically connected to the wireless transmission module (17), and the battery (18) is the wireless temperature sensor (10). Each module provides power. 3. The switchgear intelligent display device according to claim 2, characterized in that the temperature sensor (16) is attached to the surface of the cable head or contact installed in the switchgear.

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