Hazardous liquid detecting instrument based on DDS
A detector and liquid technology, applied in the field of detection equipment, can solve the problems of high application cost, strict container requirements, and low detection accuracy, and achieve the effects of low manufacturing and application costs, low container requirements, and high detection accuracy
Inactive Publication Date: 2017-02-01
上海太易宸钺安防技术有限公司
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Problems solved by technology
[0003] 1. The square wave signal is used as the transmitting signal. The equipment with this structure has the disadvantages of weak penetration and low detection accuracy, and has strict requirements on the container;
[0004] 2. Using the pulse wave with a fast rising edge as the transmitting signal, this kind of equipment solves the penetrability problem, but its hardware uses a relatively complicated analog circuit. Due to the large number of electronic components, it not only increases the cost, but also the electronic components. The consistency problem is also more prominent, which makes the overall detection parameters of the equipment based on this technology different, and the received signal needs to calculate the characteristics of the liquid through a more complex algorithm, so the overall application cost is extremely high
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[0026] In order to understand the technical content of the present invention more clearly, the following examples are given in detail.
[0027] see figure 1 Shown is a block diagram of the functional modules of the DDS-based dangerous liquid detector of the present invention.
[0028] In one embodiment, the DDS-based dangerous liquid detector includes an FPGA module, a high-frequency DDS module, a radio frequency processing module, an antenna, a signal processing module and an analog-to-digital conversion module.
[0029] Among them, the FPGA module is used to generate control signals according to the operation, and is used to generate detection results according to the received digital signals;
[0030] The high-frequency DDS module is connected to the FPGA module to generate a sine wave signal of a specific frequency and amplitude according to the control signal;
[0031] The radio frequency processing module is connected to the DDS module for amplifying and reducing noise...
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The present invention relates to a hazardous liquid detecting instrument based on DDS, belonging to the detection device technology field. A DDS module is configured to generate special high-frequency and amplitude sine wave signals according to the control signals of an FPGA module, the sine wave signals are subjected to radio frequency processing and emission, the received sine wave signals are subjected to processing through a signal processing module and an analog-digital conversion module and are sent to the FPGA module to generate detection results, so that it is ensured that the special high-frequency sine wave signals have high penetrability and good universality and have low requirement for a container, and the hazardous liquid detecting instrument based on the DDS is high in detection precision and low in the production manufacturing and application cost.
Description
technical field [0001] The present invention relates to the technical field of detection equipment, in particular to the technical field of liquid detectors, in particular to a DDS-based dangerous liquid detector. Background technique [0002] The liquid detector in the prior art mainly has two problems: [0003] 1. The square wave signal is used as the transmitting signal. The equipment with this structure has the disadvantages of weak penetration and low detection accuracy, and has strict requirements on the container; [0004] 2. Using the pulse wave with a fast rising edge as the transmitting signal, this kind of equipment solves the penetrability problem, but its hardware adopts relatively complicated analog circuits. Due to the large number of electronic components, it not only increases the cost, but also the electronic components. The consistency problem is also more prominent, which makes the overall detection parameters of the equipment based on this technology di...
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CPCG01V9/00
Inventor 周茂林项安幸波李园芳施晨程郑洁
Owner 上海太易宸钺安防技术有限公司