Hydrological cableway flow measurement signal system

Abstract

The invention relates to the field of hydrological detection, in particular to a hydrological cableway flow measurement signal system which comprises a cableway circulating cable, a lead fish, a cableway room receiving unit and a transmitting unit, the lead fish is driven by a power component of the cableway circulating cable through a steel wire rope, the lead fish comprises a flow velocity meter and a position detection module, and the transmitting unit is arranged on the steel wire rope. The transmitting unit is connected with the lead fish through a cable, the transmitting unit comprises an FM antenna and an FM signal module, and the transmitting unit is in lap joint with the cableway circulating cable through the FM antenna; and the cableway house receiving unit is used for receiving the signal sent by the FM signal module. According to the system, FM frequency modulation radio frequency is adopted to send lead fish operation states and flow velocity signals of the flow velocity meter, a frequency modulation radio is adopted to receive the signals when a common standby signal device is damaged or paralyzed, a complete flood process can be ensured to be tested by manually watching audio signals, and the system is a base line thinking and powerful guarantee of hydrological survey work when flood is snapped and tested.

Description

Technical Field

[0001] The invention relates to the field of hydrological detection, and in particular to a hydrological cableway flow measurement signal system. Background Art

[0002] The hydrological cableway signal device is a special equipment, which is generally composed of underwater flow velocity, water surface, river bottom and other signals. The signal transmission methods include wired, cableway "wireless", and radio, and its parameters should meet the corresponding test accuracy requirements. The hydrological cableway signal device is installed on the hydrological cableway lead fish for water operation. It can obtain the lead fish entry status, whether it runs to the river bottom, and monitor the real-time flow rate in real time. It is easily eroded by flood mud and floating objects, and the working environment is harsh. Because the cableway "wireless" method is usually adopted, it has a high degree of automation, strong professionalism, few manufacturers, and high prices. In addition, most hydrological stations are located in remote mountainous areas, and the inconvenience of transportation and logistics leads to a long operation and maintenance cycle after equipment failure. When a flood occurs, the cableway measurement and control system is paralyzed due to flood damage and bad weather affecting the signal transmission system (grounding, short circuit), etc., and the flood cannot be measured, causing serious production accidents.

[0003] The "wireless" cableway uses a cableway loop to transmit various signals, so there are strict insulation requirements for each component of the cross-river cableway system, which must not be short-circuited with the ground. During normal maintenance, the communication effect is good, but it is easily affected by the short circuit of the cableway system winch and each pulley block due to moisture in bad weather such as rain. When the river is flooded, the signal transmission is easily interrupted due to the bad environment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a hydrological cableway flow measurement signal system.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention discloses a hydrological cableway flow measurement signal system, comprising a cableway circulating rope, a lead fish, a cableway house receiving unit and a transmitting unit. The lead fish is transmitted through a power component of the cableway circulating rope via a steel wire rope, the lead fish comprises a flow meter and a position detection module, and is characterized in that the transmitting unit is arranged on the steel wire rope and is connected to the lead fish via a cable, the transmitting unit comprises an FM antenna and an FM frequency modulation signal module, and the transmitting unit is overlapped with the cableway circulating rope via the FM antenna; the cableway house receiving unit is used for receiving the signal sent by the FM frequency modulation signal module.

[0007] As a preferred technical solution of the present invention, the lead fish also includes a water surface information detection unit and an MCU microcontroller; the position detection module is used to determine the position information of the lead fish in the water, and after reaching the target position, the MCU microcontroller transmits an audio signal to the transmitting unit through a cable.

[0008] As a preferred technical solution of the present invention, the lead fish also includes a lithium battery, and the MCU microcontroller includes a timing unit, which is used for the water surface information detection unit to turn off the power of the transmitting unit for a set time when the water surface information detection unit does not detect that the lead fish is in contact with water; the water surface information detection unit is used to detect whether the lead fish is in contact with a water source, and when it is in contact with water, the MCU microcontroller supplies power to the lead fish based on the lithium battery.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] 1: The system of the present invention adopts FM radio frequency to send the running status of the lead fish and the flow velocity signal of the current meter. When the commonly used backup signal device is damaged or paralyzed, an FM radio is used for reception. By manually listening to the audio signal, it can ensure that the complete flood process is measured. It is the bottom line thinking and powerful guarantee for hydrological survey work during flood detection.

[0011] 2. The system of the present invention adopts micro-power FM transmission technology, with a wireless transmission distance of about 20 meters, causing no interference to public frequencies, and does not need to be registered with the radio management department.

[0012] 3. The system of the present invention cleverly combines radio technology with "wireless" transmission of cableways. The transmitting antenna is connected to the circulating cable of the cross-river cableway system to expand the coverage of the transmitting end. Clear listening can be achieved in the cableway operation room. The winch and each pulley block of the cableway system are not affected by short circuit to the ground due to moisture.

[0013] 4. The transmission frequency of the system of the present invention is adjustable to ensure accurate listening to the transmitter signal by avoiding the local radio station frequency.

[0014] 5. The system of the present invention has low power consumption, with a maximum power of about 50mw. It can work continuously for more than 10 hours when equipped with a 500ma battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 is a schematic diagram of signal transmission of the present invention;

[0017] Figure 2 It is a schematic diagram of module transmission signals of the present invention. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0019] Example 1

[0020] like Figure 1-2 As shown, the present invention provides a hydrological cableway flow measurement signal system, comprising a cableway circulating rope, a lead fish, a cableway house receiving unit and a transmitting unit, the lead fish is transmitted through a power component of the cableway circulating rope via a steel wire rope, the lead fish includes a flow meter and a position detection module, the transmitting unit is arranged on the steel wire rope, and is connected to the lead fish via a cable, the transmitting unit includes an FM antenna and an FM frequency modulation signal module, and the transmitting unit is overlapped with the cableway circulating rope via the FM antenna; the cableway house receiving unit is used for receiving the signal sent by the FM frequency modulation signal module.

[0021] The lead fish also includes a water surface information detection unit and an MCU microcontroller; the position detection module is used to determine the position information of the lead fish in the water, and after reaching the target position, the MCU microcontroller transmits an audio signal to the transmitting unit through a cable.

[0022] The lead fish also includes a lithium battery, and the MCU microcontroller includes a timing unit. The timing unit is used to turn off the power of the transmitting unit for a set time when the water surface information detection unit does not detect that the lead fish is in contact with water; the water surface information detection unit is used to detect whether the lead fish is in contact with a water source, and when it is in contact with water, the MCU microcontroller is used to supply power to the lead fish based on the lithium battery.

[0023] Specifically, in actual hydrological detection, due to the use of cable "wireless" transmission, the cable needs to be stably insulated from the ground to complete the signal transmission effect. The insulation effect between the cable and the cable and the transmitting unit is required to be high. Therefore, a signal transmission system based on the FM frequency modulation signal module is designed on this basis. Figure 1-2 shown.

[0024] The set up system is still based on the conventional cableway loop rope and lead fish composition, used in conjunction with the transmitting unit, after the lead fish enters the water, the water surface information detection unit turns on the circuit, and the water surface information detection unit transmits the water entry audio signal to the transmitting unit through the cable, allowing the MCU microcontroller to power the lead fish through the lithium battery, and the lead fish is then controlled by the MCU microcontroller to sink continuously; during the sinking process, the flow meter will continuously measure the speed of rivers at different depths, at which time the MCU microcontroller transmits the flow rate audio signal to the transmitting unit until the flow rate signal is disconnected; after the lead fish reaches the bottom of the water, the position detection module will turn on the circuit, indicating that the lead fish has reached the bottom of the river, and the MCU microcontroller transmits the river bottom audio signal to the transmitting unit; when the lead fish moves out of the water, the water surface signal is turned off, and the MCU microcontroller turns off the overall system power of the lead fish after a delay of 2 minutes through the timing unit.

[0025] Furthermore, the transmitting unit is also powered by the lithium battery in the lead fish. When the audio signal transmitted through the cable or wirelessly is received by the transmitting unit, the transmitting unit sends the signal through the FM frequency modulation signal module based on the FM antenna. Under normal conditions, since the distance between the cableway house receiving unit at the receiving end and the detection area is too far, the FM antenna is lapped onto the cableway loop rope, and the cableway loop rope is used as an extension of the FM antenna. Because the cableway house receiving unit is usually set at one or both ends of the cableway loop rope, the information transmitted by the cableway loop rope will be directly close to the cableway house receiving unit at a relatively close distance, generally 3 meters or 5 meters, and will not be affected by bad weather. While transmitting information, since the wireless transmission distance is closer, the cross-river cableway system does not require complete ground insulation requirements, and the FM frequency modulation signal has a stronger anti-interference ability. Even a short-term signal interruption can form signal transmission again, and the signal transmission distance itself can reach 20 meters.

[0026] This device has been applied to a hydrological station in Hubei Province. In the actual test process, when used in rainy weather, the staff held a portable receiver and tuned the frequency to 95MHz near the receiving unit in the cableway room to clearly receive the audio signal sent by the lead fish.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydrological cableway flow measurement signal system, comprising a cableway loop cable, a lead fish, a cableway house receiving unit and a transmitting unit, wherein the lead fish is transmitted through a power component of the cableway loop cable via a steel wire rope, and the lead fish includes a flow meter and a position detection module, characterized in that: The transmitting unit is arranged on the wire rope and connected to the lead fish through a cable. The transmitting unit includes an FM antenna and an FM frequency modulation signal module. The transmitting unit is overlapped with the cableway loop rope through the FM antenna; the cableway room receiving unit is used for receiving the signal sent by the FM frequency modulation signal module.

2. A hydrological cableway flow measurement signal system according to claim 1, characterized in that: The lead fish also includes a water surface information detection unit and an MCU microcontroller; the position detection module is used to determine the position information of the lead fish in the water, and after reaching the target position, the MCU microcontroller transmits an audio signal to the transmitting unit through a cable.

3. A hydrological cableway flow measurement signal system according to claim 2, characterized in that: The lead fish also includes a lithium battery, and the MCU microcontroller includes a timing unit, which is used for the water surface information detection unit to turn off the power of the transmitting unit for a set time when the water surface information detection unit does not detect that the lead fish is in contact with water; the water surface information detection unit is used to detect whether the lead fish is in contact with a water source, and when it is in contact with water, the MCU microcontroller supplies power to the lead fish based on the lithium battery.

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