Remote meter reading data acquisition system (DAS) based on WiFiTechnical field
The present invention relates to a kind of remote meter reading data acquisition system (DAS), relate in particular to a kind of remote meter reading data acquisition system (DAS) based on WiFi.
Background technology
Along with the depth development of electronic technology and internet, the remote meter reading data acquisition system (DAS) is widely used in the data acquisition of every profession and trade, as electric power, combustion gas, water supply industry etc.The remote meter reading data acquisition system (DAS) is that a kind of data collection station by subscriber's local (being commonly referred to as data acquisition unit) is understood for the supvr being transferred to Surveillance center behind the real time data acquisition, and the supvr also can send a kind of system equipment of command information to data collection station simultaneously.Existing remote meter reading data acquisition system (DAS) adopts the CDMA/GPRS wireless communication networks to carry out data transmission between central processing unit and the wireless transport module usually, this communication is compared with the present WiFi wireless communication technique of maturation and is had higher, the slow problem of expense, is unfavorable for the upgrading of remote meter reading data acquisition system (DAS).In addition, the power module of existing remote meter reading data acquisition system (DAS) provides power supply by AC power or dry cell, may exist AC power suspend or battery electric quantity exhaust can't operate as normal problem; Moreover, the image data acquiring of existing remote meter reading data acquisition system (DAS) adopts the mode of directly being obtained user's dial plate image by imageing sensor, so the installation site of data collection station must adapt to the position of user's dial plate, can cause data collection station that inconvenience is installed like this, the position is undesirable, is unfavorable for using.
Summary of the invention
Purpose of the present invention provides a kind of data transmission accurate, fireballing remote meter reading data acquisition system (DAS) based on WiFi with regard to being in order to address the above problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
Remote meter reading data acquisition system (DAS) based on WiFi of the present invention comprises central processing unit, power module, storer, imageing sensor, the RS232/RS485 adaptive interface, monitoring center's communication server, WiFi signal amplifier and WiFi wireless router, be connected by the internet between the telecommunication end of described WiFi wireless router and the described monitoring center communication server, pass through the WiFi wireless connections between the local signal input end of described WiFi wireless router and the remote signal output terminal of described central processing unit, by the WiFi wireless connections, the signal output part of described WiFi signal amplifier is connected with the remote signal input end of described central processing unit between the local signal output terminal of described WiFi wireless router and the signal input part of described WiFi signal amplifier.
The common composition data collector of central processing unit, power module, storer, imageing sensor, RS232/RS485 adaptive interface, WiFi signal amplifier and WiFi wireless router, the WiFi wireless router as the communication apparatus between data acquisition unit and the monitoring center's communication server, is realized the WiFi data transmission; Utilize the WiFi signal amplifier that the WiFi signal that receives is amplified, the signal transmission is more accurate like this.
Further, described power module comprises solar cell.With the standby power supply of solar cell as power module, be in full state substantially at any time, can guarantee stably to provide power supply.
As preferably, the picture signal of described imageing sensor comes from the image output of wide-angle lens, and the picture signal of described wide-angle lens comes from catoptron, and the picture signal of described catoptron comes from user's dial plate.After increasing catoptron, the installation site of wide-angle lens and whole data collection device can be convenient to install satisfying adjusting as required under the normal situation of gathering of picture signal.
Beneficial effect of the present invention is:
The present invention carries out data transmission by adopting transmission quality height, wide coverage, WiFi network that expense is low, have the meter reading data transmission accurately, speed is fast, operating cost is low advantage, and be conducive to the upgrading of remote meter reading data acquisition system (DAS); By increasing solar cell for supplying power, can guarantee at data acquisition unit stable power-supplying under any circumstance; By adopting catoptron, make data acquisition unit under the situation that satisfies the normal collection of picture signal, be convenient to install and use.
Description of drawings
Fig. 1 is the circuit block diagram of the remote meter reading data acquisition system (DAS) based on WiFi of the present invention;
Fig. 2 is the structural representation of data acquisition unit of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing:
As shown in Figure 1, remote meter reading data acquisition system (DAS) based on WiFi of the present invention comprises central processing unit, power module, storer, imageing sensor, the RS232/RS485 adaptive interface, monitoring center's communication server, WiFi signal amplifier and WiFi wireless router, wherein, power module comprises solar cell, the signal output part of imageing sensor is connected with the image information input end of central processing unit, the inner of RS232/RS485 adaptive interface is connected with central processing unit, be connected by the internet between the telecommunication end of WiFi wireless router and the monitoring center communication server, pass through the WiFi wireless connections between the local signal input end of WiFi wireless router and the remote signal output terminal of central processing unit, by the WiFi wireless connections, the signal output part of WiFi signal amplifier is connected with the remote signal input end of central processing unit between the local signal output terminal of WiFi wireless router and the signal input part of WiFi signal amplifier.
As shown in Figure 1, the common composition data collector of central processing unit, power module, storer, imageing sensor, RS232/RS485 adaptive interface, WiFi signal amplifier and WiFi wireless router.As shown in Figure 2, there is shown the part parts in the housing 2 of data acquisition unit, the imageing sensor (not shown) is installed on the circuit main board 5 the image outgoing position over against wide-angle lens 4,catoptron 1 is installed in the housing 2 and the image that is positioned at wide-angle lens 4 is imported a side, user's dial plate 3 is installed on the housing 2 and is positioned at the position ofcatoptron 1 downside, the picture signal of imageing sensor comes from the image output of wide-angle lens 4, the picture signal of wide-angle lens 4 comes fromcatoptron 1, and the picture signal of catoptron comes from user's dial plate 3.After increasingcatoptron 1, the installation site of wide-angle lens 4 and whole data collection device can be convenient to install satisfying adjusting as required under the normal situation of gathering of picture signal.