CN204405198U

CN204405198U - The wireless contact temp measuring system of a kind of high-tension switch cabinet

Info

Publication number: CN204405198U
Application number: CN201420827187.8U
Authority: CN
Inventors: 王世启; 林昕; 张福生; 刘梦; 王大刚
Original assignee: 河南工业技术研究院
Priority date: 2014-12-24
Filing date: 2014-12-24
Publication date: 2015-06-17

Abstract

The utility model provides the wireless contact temp measuring system of a kind of high-tension switch cabinet, comprise wireless temperature sensors, temp monitoring alarm and host computer, described wireless temperature sensors is installed on the tested cable splice in high-tension switch cabinet, described temp monitoring alarm is arranged on high-voltage switch cabinet door, the temperature data collected is sent to the temp monitoring alarm on cabinet door by wireless temperature sensors through wireless transmission, temperature data receives by temp monitoring alarm, process, store, display, location, and be uploaded to host computer through RS485 communication interface.Radio temperature sensor device of the present utility model is directly connected with nothing between monitoring alarm, naked problem, achieve wireless networking, extendability is strong, be convenient to the monitoring of high-tension switch cabinet, maintenance, be suitable for the real time temperature monitoring of different electric pressure, varying environment charging equipment, installation is easy should go.

Description

The wireless contact temp measuring system of a kind of high-tension switch cabinet

Technical field

The utility model relates to technical field of electricity, particularly relates to the wireless contact temp measuring system of a kind of high-tension switch cabinet.

Background technology

In high-tension switch cabinet, the situation such as aging, high overload of contact makes cable temperature rise too high, causes Frequent Accidents.High-tension switch cabinet inner cable contact temperature is effectively monitored, effectively can prevent the generation of this type of accident.But due to switch cubicle be totally-enclosed operation, the various and bad environments of measured positional structure, in-cabinet temperature of cannot manually patrolling, therefore needs a kind of temperature of high-tension switch cabinet monitoring equipment to monitor it.

There is all kinds of monitoring system in the market, wherein, the temperature monitoring system of existing wireless-transmission network, comprise temperature sensor, temperature polling instrument, radio transmission apparatus, radio receiver forms, temperature sensor is arranged on cabinet inner contact contact, its power supply gets 220V power for illumination in switch cubicle, temperature polling instrument and radio transmission apparatus are all arranged on outside switch cubicle, the temperature sensor that each contact is installed is communicated with equipment such as temperature polling instruments by outgoing cable in cabinet, temperature polling instrument there are multiple temperature sensor interface and the RS485 interface for data transmission, communicated with radio transmission apparatus by RS485 interface, the temperature value of each check point is passed to radio transmission apparatus, then radio transmission apparatus passes through wireless network, each point temperature value is transferred to the radio receiver of Central Control Room, then receiving equipment is by Web server, is preserved by temperature information and is published on network after sorting out, consult and analyze for related personnel.Temperature sensor signal is drawn by cable by the program, realizes PERCOM peripheral communication, ensure that effective transmission of signal, but cabinet inner cable lead-in wire is more, and installation and maintenance are not too convenient, and system reliability reduces.

Utility model content

For above-mentioned prior art Problems existing, the utility model provides that a kind of structure is simple, networking flexibility, Novel high tension switchgear easy to maintenance is wireless contact temp measuring system, contact temperature-measuring and short distance wireless data is adopted to communicate the technology combined, the problem such as to effectively prevent in switch cubicle communication line and supply line is too much.

To achieve these goals, the technical solution adopted in the utility model is: a kind of high-tension switch cabinet is wireless contact temp measuring system, comprise wireless temperature sensors, temp monitoring alarm and host computer, described wireless temperature sensors is installed on the tested cable splice in high-tension switch cabinet, described temp monitoring alarm is arranged on high-voltage switch cabinet door, the temperature data collected is sent to the temp monitoring alarm on cabinet door by wireless temperature sensors through wireless transmission, temperature data receives by temp monitoring alarm, process, store, display, location, and be uploaded to host computer through RS485 communication interface.

Wherein, described wireless temperature sensors and temp monitoring alarm are corresponding one by one, and adopt the networking of radial network structure, each temp monitoring alarm of same switchgear building or transformer station adds tree network as cluster node and realizes Local Area Networking communication.

Described wireless temperature sensors is made up of power supply, master controller, digital temperature sensor, radio receiving transmitting module circuit, 433MHzPCB antenna, storer and Infrared Transmission circuit and is integrated in one piece of PCB, described master controller has RTCC timing wake-up function, be provided with SPI, USART, IIC multiple communication interface outward, be connected with the corresponding interface of digital temperature sensor, radio receiving transmitting module circuit, storer and Infrared Transmission circuit respectively.

Described temp monitoring alarm is by master controller, power management module, radio receiving transmitting module circuit, external sucker antenna, SD card, storer, Infrared Transmission circuit, sound light alarming circuit, LCD LCD MODULE, keyboard, GPRS module forms, USB is provided with outside described master controller, PMP, SPI, USART, IIC multiple communication interface, respectively with radio receiving transmitting module circuit, SD card, storer, Infrared Transmission circuit, sound light alarming circuit, LCD LCD MODULE, keyboard connects, electric power system is provided voltage transitions by described power management module, give LCD LCD MODULE and system power supply respectively, temperature data is transferred to far-end internet server and intelligent mobile terminal by described GPRS module.

Further, described radio receiving transmitting module circuit adopts the PCB antenna of si4432 radio frequency chip and low frequency 433MHz, realizes wireless transmission and 4 layers of EZMAC wireless communication network agreement by embedded software technology.

Further, described Infrared Transmission circuit is made up of infrared encoder and infrared transceiver, can completion system operational factor arrange, software debugging and software upgrading.

The beneficial effect that the utility model takes technique scheme to bring is: 1, adopt digital temperature sensor chip MCP9700, sensor chip volume is little, cost is low, good at quite wide temperature range (-40 DEG C ~ 120 DEG C) internal linear degree, measuring accuracy is high, compares analog temperature sensor chip, thermal resistor eliminates and add linearizer and need the problems such as adjustment in addition; 2, radio temperature sensor device is directly connected with nothing between temp monitoring alarm, naked problem; 3, altogether cable is adopted to power the mode combined with powered battery, embedded software realizes the ultralow Consumption of radio temperature sensor, battery life is longer, and increase polling period, improve the power management of wireless chip, can, by within equivalent lower power consumption to 1mW, use high-performance disposable lithium cell (3.7V permanent home polarization lithium-thionyl chloride compound battery) that the power supply capacity of about 5 years can be realized; 4, can realize wireless networking, extensibility is strong, the real time temperature monitoring of applicable different electric pressure, varying environment charging equipment, and installation is easy should go; 5, system adopts distributed hierarchy design, and topological structure is flexible, can incorporate automated system and run, also independently can become system.

Accompanying drawing explanation

Fig. 1 is the system group network Organization Chart of the wireless contact temp measuring system of the utility model high-tension switch cabinet

Fig. 2 is the composition frame chart of radio temperature sensor

Fig. 3 is the composition frame chart of temp monitoring alarm

Five, embodiment

Below in conjunction with accompanying drawing and better embodiment, the utility model is described in further detail:

The wireless contact temp measuring system of high-tension switch cabinet that the present embodiment proposes, its structure as shown in Figure 1, comprise wireless temperature sensors, temp monitoring alarm and host computer, wireless temperature sensors is installed on the multiple tested cable splice in high-tension switch cabinet, corresponding temp monitoring alarm is arranged on high-voltage switch cabinet door, the temperature data at radio temperature sensor intermittent collection cable splice place, each cable junctions has fixing MAC Address, the temperature data collected by each contact is sent to the temp monitoring alarm on cabinet door via respective wireless sending module, data are received by wireless receiving module, the storage of data is realized by main controller controls, display, and be uploaded to host computer through RS485 communication interface, upload to far-end internet server and intelligent terminal wherein by built-in GPRS module simultaneously, described wireless temperature sensors and temp monitoring alarm are corresponding one by one, adopt the networking of radial network structure, each temp monitoring alarm of same switchgear building or transformer station adds tree network as cluster node and realizes Local Area Networking communication.

The present embodiment being described below each several part:

Wireless temperature sensors:

The wireless temperature sensors of the present embodiment is arranged on cable splice, the position such as switch contact or copper bar connection of switch cubicle, by the temperature variation of digital temperature sensor real-time perception high-tension switch cabinet, so that Timeliness coverage affects the internal fault of switch cubicle.The structured flowchart of wireless temperature sensors as shown in Figure 2, utilize CMOS technology integrated power supply, master controller, digital temperature sensor, radio receiving transmitting module circuit, storer and Infrared Transmission circuit on a single chip, described master controller has RTCC arousal function, be provided with SPI, USART, IIC multiple communication interface outward, be connected with the corresponding interface of digital temperature sensor, radio receiving transmitting module circuit, storer and Infrared Transmission circuit respectively.

Wherein, wireless temperature sensors adopts battery powered mode, and battery is powered to master controller, and digital temperature sensor is powered and to be powered by single-chip processor i/o pin.Wireless temperature sensors have employed the wide dynamic range current transformer for supplying power circuit based on dynamic current Sampling techniques, the equipment that can meet when line current is 6 ~ 600A powers (3.3V@50mA), high-performance disposable lithium cell can be used to power when line current is less than 6A, power-on time is close to battery life (permanent home polarization lithium-thionyl chloride compound battery can reach 20 years).Master controller adopts PIC18F26J11 single-chip microcomputer, has super low-power consumption RTCC arousal function and SPI, USART, IIC multiple communication interface, thus can realize the low power dissipation design of radio temperature sensor; Digital temperature sensor line adopts chip MCP9700, according to thermometric time interval detected temperatures (adjustable) of presetting, thus effectively reduces power consumption; If radio receiving transmitting module main circuit adopts si4432 radio frequency chip, communication distance can reach 1000m, and good stability, antenna adopts PCB antenna, and procotol and algorithm are that embedded software realizes; Storer adopts EEPROM, carries out real-time storage to temperature data, effectively compensate for wireless transmission circuit and sends the imperfect phenomenon that data packetloss produces data; If Infrared Transmission main circuit is made up of infrared encoder and infrared transceiver, can completion system operational factor arrange and software upgrading function.

Temp monitoring alarm:

The temp monitoring alarm of the present embodiment is arranged on high-voltage switch cabinet door, the temperature data of the corresponding temperature sensing device transmission of wireless receiving on the one hand, and realize the process of data, storage, display, location and warning function, on the other hand temperature data is uploaded to host computer by RS485 communication interface, and upload to far-end internet server and intelligent terminal by built-in GPRS module.

The structured flowchart of the present embodiment as shown in Figure 3, by master controller, power management module, radio receiving transmitting module circuit, SD card, storer, Infrared Transmission circuit, sound light alarming circuit, LCD LCD MODULE, keyboard, GPRS module forms, USB is provided with outside described master controller, PMP, SPI, USART, IIC multiple communication interface, respectively with radio receiving transmitting module circuit, SD card, storer, Infrared Transmission circuit, sound light alarming circuit, LCD LCD MODULE, keyboard connects, 220VAC powers and is converted to 6 ~ 9VDC voltage by temp monitoring alarm supply module, convert thereof into 5V and 3.3V by power management module again and be supplied to LCD LCD MODULE and system power supply respectively, master controller chip adopts PIC18F46J50 single-chip microcomputer, and it has the multiple interfaces functions such as SPI, IIC, USART, PMP, USB, meets system needs, wherein radio receiving transmitting module circuit and SD cartoon cross the SPI Interface realization data communication of master controller, complete storage and the wireless transmission of each contact real time temperature data, EEPROM is for upgrading upgrade software program, infrared receiving/transmission circuit realiration system operational parameters is arranged and software upgrading function, assists wireless transfer channel to carry out data fault-tolerant, and can be used for the clock synchronization operation of each contact sensor, sound and light alarm module is mainly prescribed a time limit when collecting temperature data reach in alarm range, realizes sound and light of alarm, LCD LCD MODULE mainly realizes temperature data display, analyzes and management function, RS-485 realizes uploading of temperature data, keyboard mainly has upper and lower key, setting, confirming button to complete the data manipulation shown LCD, GPRS module is used for transferring data to far-end internet server and intelligent mobile terminal.

Host computer: be connected with each temp monitoring alarm through RS485 communication interface, carries out online monitoring temperature, analysis, display and warning according to the temperature data received, and plans as a whole process simultaneously and store backup to temperature data.

Claims

1. the wireless contact temp measuring system of high-tension switch cabinet, it is characterized in that: comprise wireless temperature sensors, temp monitoring alarm and host computer, described wireless temperature sensors is installed on the tested cable splice in high-tension switch cabinet, described temp monitoring alarm is arranged on high-voltage switch cabinet door, the temperature data collected is sent to the temp monitoring alarm on cabinet door by wireless temperature sensors through wireless transmission, temperature data receives by temp monitoring alarm, process, store, display, location, and be uploaded to host computer through RS485 communication interface.

2. the wireless contact temp measuring system of high-tension switch cabinet according to claim 1, it is characterized in that: described wireless temperature sensors and temp monitoring alarm are corresponding one by one, adopt the networking of radial network structure, each temp monitoring alarm of same switchgear building or transformer station adds tree network as cluster node and realizes Local Area Networking communication.

3. the wireless contact temp measuring system of high-tension switch cabinet according to claim 1, it is characterized in that: described wireless temperature sensors is made up of power supply, master controller, digital temperature sensor, radio receiving transmitting module circuit, storer and Infrared Transmission circuit and is integrated in one piece of PCB, described master controller has RTCC timing wake-up function, be provided with SPI, USART, IIC multiple communication interface outward, be connected with the corresponding interface of digital temperature sensor, radio receiving transmitting module circuit, storer and Infrared Transmission circuit respectively.

4. the wireless contact temp measuring system of high-tension switch cabinet according to claim 1, it is characterized in that: described temp monitoring alarm is by master controller, power management module, radio receiving transmitting module circuit, SD card, storer, Infrared Transmission circuit, sound light alarming circuit, LCD LCD MODULE, keyboard, GPRS module forms, USB is provided with outside described master controller, PMP, SPI, USART, IIC multiple communication interface, respectively with radio receiving transmitting module circuit, SD card, storer, Infrared Transmission circuit, sound light alarming circuit, LCD LCD MODULE, keyboard connects, electric power system is provided voltage transitions by described power management module, give LCD LCD MODULE and system power supply respectively, temperature data is transferred to far-end internet server and intelligent mobile terminal by described GPRS module.

5. the high-tension switch cabinet according to claim 3 or 4 is wireless contact temp measuring system, it is characterized in that: described radio receiving transmitting module circuit adopts si4432 radio frequency chip and PCB antenna, realizes wireless transmission and 4 layers of EZMAC wireless communication network agreement by embedded software technology.

6. the high-tension switch cabinet according to claim 3 or 4 is wireless contact temp measuring system, is characterized in that: described Infrared Transmission circuit is made up of infrared encoder and infrared transceiver, can completion system operational factor arrange, software debugging and software upgrading.