Pointer instrument representation value identification system based on wireless sensor network
A wireless sensor and recognition system technology, applied in character and pattern recognition, network topology, wireless communication, etc., can solve the problems of aggravating WSNs communication pressure, transmission rate limitation, etc.
Pending Publication Date: 2019-07-26
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology
The instrument image collected by WSNs nodes is directly sent to the upper computer through WSNs, and then the upper computer recognizes the instrument representation value, which not only increases the communication pressure of WSNs, but also its transmission rate is limited by the network bandwidth.
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[0045] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0046] In the following description, a lot of specific details are set forth in order to fully understand the present invention, but the present invention can also be implemented in other ways different from those described here, and those skilled in the art can do it without departing from the meaning of the present invention. By analogy, the present invention is therefore not limited to the specific examples disclosed below.
[0047] Such as figure 2(a) WSNs coordinator node program flow chart of the node program flow chart, (b) shown in the WSNs terminal node program flow chart, after the WSNs terminal node is powered on, first complete the initialization of the JN5168 and its external hardware devices, And open up memory space for each functional event queue; Subsequently, join the wireless sensor network based on ZigBee protoco...
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The invention discloses a pointer type instrument representation value identification system based on a wireless sensor network (WSNS), and relates to the technical field of WSNs and image identification. The system is composed of WSNs terminal nodes, WSNs coordinator nodes, an upper computer and the like. According to the system, pointer instrument image acquisition, image preprocessing, dial positioning, pointer detection and indication calculation are realized on a WSNs terminal node by utilizing the data processing capability of the WSNs node. According to the system, by utilizing the network communication capability of a WSNs node, the pointer type instrument representation value identification results are collected to the WSNs coordinator node through a wireless network established by the WSNs coordinator node, and then are uploaded to the upper computer through a USB port to be displayed. The system node can be directly powered by a battery and can be quickly and conveniently arranged in a temporary important place to complete the identification of the representation value of the pointer type instrument, the data transmission quantity of the used WSNs can be effectively reduced, and the limitation of a lower data transmission rate of the WSNs on the wireless transmission of instrument images is overcome.
Description
technical field [0001] The present invention relates to the technical fields of wireless sensor networks (WSNs, WSNs) and image recognition, in particular to a method for recognizing indication values of pointer instruments based on wireless sensor networks. Background technique [0002] Instrumentation plays an important role in daily life and industrial production. Although the digital display instrument technology is relatively mature, the pointer instrument is still the main measuring instrument because of its advantages of reliable performance, fast response speed, convenient use and maintenance. However, manual input of meter readings has the problems of low efficiency and prone to errors. In order to obtain the measurement value of the instrument accurately and quickly, the automatic reading recognition scheme of the pointer instrument based on machine vision is widely used. Most of the existing pointer instrument indication value recognition systems are wired. Al...
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Login to View More IPC IPC(8): G06K9/00H04W84/18
CPCH04W84/18G06V20/00G06V2201/02
Inventor 侯立群张全军
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)