CN203824979U - Dew condensation monitor - Google Patents
Dew condensation monitor Download PDFInfo
- Publication number
- CN203824979U CN203824979U CN201420017314.8U CN201420017314U CN203824979U CN 203824979 U CN203824979 U CN 203824979U CN 201420017314 U CN201420017314 U CN 201420017314U CN 203824979 U CN203824979 U CN 203824979U
- Authority
- CN
- China
- Prior art keywords
- module
- condensation
- dew condensation
- display module
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a dew condensation monitor. The dew condensation monitor comprises a data acquisition and transmission module which is positioned in an electric high-voltage switch cabinet and a data monitoring and displaying module which is positioned in the distance, wherein the data acquisition and transmission module comprises a dew condensation sensor array, a multiplexing switch, a signal processing module, an analog-to-digital conversion module and a wireless transmission module which are sequentially connected with one another; the data monitoring and displaying module comprises a wireless receiving module, a one-chip computer, a display module, a clock chip and a sound-light alarm circuit; the wireless receiving module, the display module, the clock chip and the sound-light alarm circuit are respectively connected with the one-chip computer module. According to the dew condensation monitor, the intensity of dew condensation in the high-voltage switch cabinet can be accurately monitored in real time by array-type dew condensation sensors and a weak signal conditioning circuit, a user can be reminded of removing condensed dew in time in a grading manner via liquid crystal display and sound-light alarms. Thus, the dew condensation resisting reliability of the switch cabinet is greatly improved and the service life of the switch cabinet is greatly prolonged.
Description
Technical field
The utility model relates to a kind of condensation monitor.
Background technology
China's information please log in: equipment for power transmission and distribution net adopts Automatic-heating dehumidifying controller to prevent that condensation from having more than ten years history in switch cubicle, this heating and dehumidification controller is at moisture resistant, anti-condensation guarantee high-tension apparatus reliability service has played positive role, but some problems are also there are in the area application having, for example: at southern plum rain season, sometimes the air humidity of inside switch cabinet is higher, even local existing dewfall phenomenon in switch cubicle, owing to being arranged on the position of condensation sensor of cabinet inside and not arriving the degree of condensation, or, condensation sensor is subject to dust and gas pickling in air for a long time, the sensitivity of sensor is affected, condensation controller can not start well heater in time.Cause the effect of condensation control malfunctioning, bring threat to the safety of switchgear.Novel high tension switchgear inner space is very compact, and for ensureing in high Humid Area built-in electrical insulation level, assurance device reliably working, to moistureproof, anti-condensation having higher requirement in cabinet.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of condensation monitor for the deficiency in background technology, this monitor is by array condensation sensor and feeble signal modulate circuit, can monitor accurately in real time the condensation intensity in high-tension switch cabinet, can realize point rank and point out in time user to remove condensation by liquid crystal display and sound and light alarm.
The utility model is for solving the problems of the technologies described above by the following technical solutions:
A kind of condensation monitor, comprises the data acquisition and transport module and data monitoring and the display module at a distance that are positioned at power high voltage switch cubicle, and described data acquisition and transport module comprise by the sensor array being made up of multiple condensation sensors.
Preferably, described data acquisition and transport module also comprise multiplexer switch, signal processing module, analog-to-digital conversion module, each output terminal of described condensation sensor array and the input end of multiplexer switch are corresponding one by one, the output terminal of described multiplexer switch connects the input end of signal processing module, and the output terminal of described signal processing module connects the input end of analog-to-digital conversion module.
Preferably, described data monitoring and display module comprise single-chip microcomputer, display module, clock chip and warning circuit, and described display module, clock chip and sound light alarming circuit are connected with single-chip microcomputer respectively.
Preferably, described in, be positioned at the data acquisition of power high voltage switch cubicle and transport module and data monitoring and display module by wireless connections.
Preferably, described multiplexer switch model is AMC4601.
Preferably, described analog-to-digital conversion module adopts the analog to digital converter that model is AD7794.
Preferably, described display module is touch-screen type display module.
Preferably, described display module is 204 cun of ALIENTEK TFTLCD.
Preferably, the model of described one-chip computer module is STM32.
Preferably, the model of described clock chip is DS1302.
The utility model adopts above technical scheme compared with prior art, has following technique effect:
The utility model proposes a kind of microminiaturization and intelligentized condensation monitor, by array condensation sensor and feeble signal modulate circuit, can monitor accurately in real time the condensation intensity in high-tension switch cabinet, can realize point rank and point out in time user to remove condensation by liquid crystal display and sound and light alarm, greatly improve the anti-condensation reliability of switch cubicle and mission life.The intelligent high-voltage board condensation measuring instrument the utility model proposes has low-power consumption, microminiaturization, cost is low, precision is high feature, good stability, have data shows simultaneously in real time, owing to adopting multiple data acquisitions and the multimetering of transmission system array, can do comprehensive monitoring to condensation situation in high-voltage board efficiently.
Brief description of the drawings
Fig. 1 is system chart of the present utility model;
Fig. 2 is condensation sensor of the present utility model and pre-amplification circuit thereof;
Fig. 3 is array condensation sensor of the present utility model and multiplexed analog switch schematic diagram;
Fig. 4 is signal processing module of the present utility model;
Fig. 5 is radio communication circuit of the present utility model;
Fig. 6 is touch-screen input of the present utility model and display circuit;
Fig. 7 is sound light alarming circuit of the present utility model;
Fig. 8 is system main flow chart of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the technical solution of the utility model is described in further detail:
As shown in Figure 1, a kind of condensation monitor, comprises the data acquisition and transport module and data monitoring and the display module at a distance that are positioned at power high voltage switch cubicle; Described data acquisition comprises with transport module the data acquisition module, multiplexer switch, signal processing module, analog-to-digital conversion module and the wireless sending module that are connected successively; Its data acquisition module comprises multiple HDP-07 sensors and amplifying circuit, its analog-to-digital conversion module is chosen as AD7794 analog to digital converter, its multiplexer switch is chosen as AMC4601, described data monitoring and display module comprise wireless receiving module, one-chip computer module, touch-screen input and display module, clock chip and sound light alarming circuit, and described wireless receiving module, touch-screen input are connected with one-chip computer module respectively with display module, clock chip and sound light alarming circuit; Its wireless transmission and receiver module are chosen as transceiving chip nRF905, its one-chip computer module is chosen as STM32 single-chip microcomputer, its clock chip is chosen as DS1302 chip, described touch-screen input is elected 2.4 cun of ALIENTEK TFTLCD as with display module class, described signal processing module comprises amplifying circuit and double operational bandpass filter, described amplifying circuit is made up of OPA277 operational amplifier and resistance capacitance, described two fortune bandpass filter is made up of 2 OPA277 operational amplifiers, and described warning circuit is made up of diode and hummer.The related related operation that obtains single-chip microcomputer of the utility model all belongs to prior art, and the utility model does not improve the single-chip microcomputer operational method relating in condensation observation process.
As shown in Figure 2, signals collecting is the condensation sensor HDP-07 adopting, synthesis precision is relatively high, applicable environment temperature is 0 DEG C ~+60 DEG C, this condensation sensor is positive characteristic switching mode element, insensitive and only to high humidity sensitivity, be best suited for the occasion that need to control high humility, dewfall to low humidity, the condensation that meets very much high-voltage board is measured.The utility model utilizes in-phase proportion computing circuit that the signal of sensor collection is done to preposition amplification processing.
As shown in Figure 3, the detection of condensation is all generally to adopt single-sensor to measure, due to certain some condensation may alter a great deal and dispatch from the factory parameter etc. of sensor slightly variant, these factors have all increased measuring error.The utility model is to traditional improving based on condensation sensor measuring system.On hardware, utilize the array of HDP-07 condensation sensor composition 2*2, adopt distribution array formula multi-point average metering system, effectively eliminate the measuring error of bringing due to the individual defect of sensor own and reduced the stochastic error or the reproducibility error that produce due to sensor chip creep, significantly having reduced the impact of floating in year.Condensation situation in the metering system energy Real-Time Monitoring high-voltage board of array like this.In addition,, in this array metering system, adopt multiplexed analog switch to select timesharing to export to follow-up signal processing circuit module.
As shown in Figure 4, signal processing circuit comprises amplifying circuit and double operational bandpass filter, the data that array-type sensor is taked amplify and filtering process after be input to signaling conversion circuit, greatly reduce measure in signal noise and the loss of signal, the amplifying circuit that wherein amplification circuits is made up of OPA277 operational amplifier and resistance capacitance, this circuit is typical differential amplifier circuit, simultaneously, C3 and R6, C4 and R7 composition low-pass filter.Form double operational bandpass filter by two OPA277 operational amplifiers, the design's bandpass filter Q value and centre frequency are adjustable, regulate the resonance frequency that R9 can regulating circuit, regulate the Q value that R8 can regulating circuit.It should be noted that, array condensation sensor is input to AD7794 after signal processing circuit again and carries out digital-to-analog conversion being selected to export to by multiplexed analog switch after the condensation signals collecting of each point, simulating signal is converted to digital signal, is conducive to the long range wireless transmission of signal.Noise that it should be noted that 24 sigma-delta pattern number converter AD7794 only has 40nV, and static current of lcd is 400 μ A only, are particularly suitable for requiring the application of low-power consumption and high-acruracy survey.
As shown in Figure 5, the utility model adopts that transmitting frequency is many, transmitting range is far away, antijamming capability is strong remote-wireless transceiving chip nRF905, is operated in 433/868/915MHz3 ISM band, and between frequency range, transceiver mode is less than 650us switching time.The ports such as TRX_CE, PWR_UP, TXEN, CSN, SCK, MISO, MOSI are connected with single-chip microcomputer, CSN, SCK, MISO, MOSI composition SPI interface.When transmitting data, nRF905 is set to emission mode, and single-chip microcomputer writes chip buffer area by SPI interface by receiving station address and valid data, then coordinates TRX_CE level to generate CRC and lead code, and transmitting data.While receiving data, nRF905 is set to receptive pattern, waits the arrival of pending data, when receiving after the other side's lead code, effective address and CRC, stores the data in register, produces and interrupts, and allows single-chip microcomputer read.
As shown in Figure 6, touch-screen input forms display control circuit with display circuit by TFT touch LCD screen, and dew condensation amount in high-voltage board, can show in real time by liquid crystal display, for alarm threshold value, user also can input setting by touch-screen according to the requirement of oneself.
As shown in Figure 7, sound light alarming circuit adopts different diode and the hummers of yellow, orange and red 3 kinds of colors to carry out alarm, wherein three kinds of different colors represent different threshold value warnings, when reaching redness when the highest early warning, control hummer and carry out alarm prompting keeper and carry out the cleaning of condensation and the protection of high-voltage board inside.
As shown in Figure 8, start after test, STM32 single-chip microcomputer is waken up, and the initialization of high-voltage board condensation monitoring system now can arrange 3 threshold values in various degree online by touch-screen.Then AD7794 optionally samples to data by multiplexer switch to the dew condensation amount of HDP-07 sensor measurement at regular intervals.Wireless receiving module receives image data, after treatment, liquid crystal display shows dew condensation amount, and judge that whether image data is higher than establishing threshold value, being greater than minimum threshold, to be less than Second Threshold amber light bright, being greater than Second Threshold, to be less than the orange lamp of max-thresholds bright, is greater than max-thresholds when red and hummer emergency alarm.STM32 single-chip microcomputer advantage is its low-power consumption characteristic, and native system program designs according to low-power consumption mode.Except necessary device initialize, all the other programs have liquid crystal display triggering, timer and A/D conversion all in interruption, to complete.The single-chip microcomputer most of the time, in low-power consumption mode, only has while interrupting being triggered, is just waken up, and this design proposal greatly reduces system power dissipation.In order further to reduce power consumption, in the time not observing measurement data, can make system enter automatic measurement pattern, Single-chip Controlling liquid crystal, closes that it is backlight, reduces power consumption.
Claims (9)
1. a condensation monitor, comprise the data acquisition and transport module and data monitoring and the display module at a distance that are positioned at power high voltage switch cubicle, it is characterized in that: described data acquisition and transport module comprise by the sensor array being made up of multiple condensation sensors; Described data acquisition and transport module also comprise multiplexer switch, signal processing module, analog-to-digital conversion module, each output terminal of described condensation sensor array and the input end of multiplexer switch are corresponding one by one, the output terminal of described multiplexer switch connects the input end of signal processing module, and the output terminal of described signal processing module connects the input end of analog-to-digital conversion module.
2. condensation monitor according to claim 1, is characterized in that: described data monitoring and display module comprise single-chip microcomputer, display module, clock chip and warning circuit, described display module, clock chip and sound light alarming circuit are connected with single-chip microcomputer respectively.
3. condensation monitor according to claim 1, is characterized in that: described in be positioned at the data acquisition of power high voltage switch cubicle and transport module and data monitoring and display module by wireless connections.
4. condensation monitor according to claim 1, is characterized in that: described multiplexer switch model is AMC4601.
5. condensation monitor according to claim 1, is characterized in that: described analog-to-digital conversion module adopts the analog to digital converter that model is AD7794.
6. condensation monitor according to claim 1, is characterized in that: described display module is touch-screen type display module.
7. according to the condensation monitor described in claim 2 or 6, it is characterized in that: described display module is 2.4 cun of ALIENTEK TFTLCD.
8. condensation monitor according to claim 2, is characterized in that: the model of described one-chip computer module is STM32.
9. condensation monitor according to claim 2, is characterized in that: the model of described clock chip is DS1302.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420017314.8U CN203824979U (en) | 2014-01-13 | 2014-01-13 | Dew condensation monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420017314.8U CN203824979U (en) | 2014-01-13 | 2014-01-13 | Dew condensation monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203824979U true CN203824979U (en) | 2014-09-10 |
Family
ID=51480462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420017314.8U Expired - Fee Related CN203824979U (en) | 2014-01-13 | 2014-01-13 | Dew condensation monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203824979U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360704A (en) * | 2014-10-31 | 2015-02-18 | 苏州佑瑞检测技术有限公司 | Switch cabinet condensation monitoring system based on dual single-chip microcomputers |
| CN104460786A (en) * | 2014-10-31 | 2015-03-25 | 苏州佑瑞检测技术有限公司 | Switch cabinet condensate monitoring and processing method |
| CN107579595A (en) * | 2017-08-30 | 2018-01-12 | 苏州麦喆思科电子有限公司 | A kind of accumulator cell charging and discharging monitoring system based on switch cubicle |
| CN107632542A (en) * | 2017-08-30 | 2018-01-26 | 苏州麦喆思科电子有限公司 | A kind of condensation detection and supervising device for switch cubicle |
| CN108051545A (en) * | 2017-11-30 | 2018-05-18 | 苏州切思特电子有限公司 | A kind of cabinet condensation detecting system based on conversion equipment |
| CN113623820A (en) * | 2021-08-23 | 2021-11-09 | 宁波奥克斯电气股份有限公司 | Indoor unit condensation prevention control method and device, storage medium and air conditioner |
| CN117092133A (en) * | 2023-10-16 | 2023-11-21 | 成都市汇智讯新能源科技有限公司 | Detection system and detection method based on energy storage plate |
-
2014
- 2014-01-13 CN CN201420017314.8U patent/CN203824979U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104360704A (en) * | 2014-10-31 | 2015-02-18 | 苏州佑瑞检测技术有限公司 | Switch cabinet condensation monitoring system based on dual single-chip microcomputers |
| CN104460786A (en) * | 2014-10-31 | 2015-03-25 | 苏州佑瑞检测技术有限公司 | Switch cabinet condensate monitoring and processing method |
| CN107579595A (en) * | 2017-08-30 | 2018-01-12 | 苏州麦喆思科电子有限公司 | A kind of accumulator cell charging and discharging monitoring system based on switch cubicle |
| CN107632542A (en) * | 2017-08-30 | 2018-01-26 | 苏州麦喆思科电子有限公司 | A kind of condensation detection and supervising device for switch cubicle |
| CN108051545A (en) * | 2017-11-30 | 2018-05-18 | 苏州切思特电子有限公司 | A kind of cabinet condensation detecting system based on conversion equipment |
| CN113623820A (en) * | 2021-08-23 | 2021-11-09 | 宁波奥克斯电气股份有限公司 | Indoor unit condensation prevention control method and device, storage medium and air conditioner |
| CN113623820B (en) * | 2021-08-23 | 2022-10-28 | 宁波奥克斯电气股份有限公司 | Indoor unit condensation prevention control method and device, storage medium and air conditioner |
| CN117092133A (en) * | 2023-10-16 | 2023-11-21 | 成都市汇智讯新能源科技有限公司 | Detection system and detection method based on energy storage plate |
| CN117092133B (en) * | 2023-10-16 | 2024-01-09 | 成都市汇智讯新能源科技有限公司 | Detection system and detection method based on energy storage plate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203824979U (en) | Dew condensation monitor | |
| CN102866301A (en) | Grounding resistance analyzing device and grounding resistance analyzing method | |
| CN104865493A (en) | CELL panel open-short circuit detection device and method | |
| CN203490209U (en) | Calibrating device for harmful gas detection alarm of coal mine | |
| CN103674111A (en) | Factory environment intelligent detection system | |
| CN202562648U (en) | Temperature remote real-time monitoring device | |
| CN204228602U (en) | Crop leaf physiological moisture monitoring system | |
| CN201497917U (en) | Temperature and humidity measurement control warning device for transformer substation | |
| CN202793980U (en) | Distributed wireless dust measuring instrument | |
| CN104977430A (en) | Virtual test apparatus for thermal wind speed sensor in absence of wind tunnel | |
| CN205015695U (en) | Pharmaceutical warehouse temperature wetness monitoring system based on radio communication | |
| CN203337541U (en) | Gas analyzer | |
| CN204330020U (en) | A kind of indoor condensation check device | |
| CN202815094U (en) | Grounding resistance analysis device | |
| CN103969413B (en) | For the pilot system of Water Test Kits accelerated life test | |
| CN105606664A (en) | Plant critical freezing injury temperature detector | |
| CN203241550U (en) | SCM(single chip microcomputer)-based environment remote monitoring device | |
| CN201509261U (en) | Television set capable of measuring temperature, humidity and CO2 concentration | |
| CN204087026U (en) | A kind of temperature-humidity monitoring of intelligence and early warning system | |
| CN204847935U (en) | Independent multichannel output device of sensor | |
| CN107632542A (en) | A kind of condensation detection and supervising device for switch cubicle | |
| CN206074594U (en) | A kind of integrated soil moisture content monitor | |
| CN203298801U (en) | Humiture detection system | |
| CN106647477A (en) | Real-time remote normal hexane gas detection system | |
| CN203672819U (en) | Cereal moisture monitoring device based on global system for mobile (GSM) short message warning |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20160113 |