CN209877926U

CN209877926U - Transmission line icing weighing sensor

Info

Publication number: CN209877926U
Application number: CN201920013059.2U
Authority: CN
Inventors: 贺云龙; 宋昌林; 白治艳
Original assignee: HUIYUAN OPTICAL COMMUNICATION CO Ltd SICHUAN
Current assignee: HUIYUAN OPTICAL COMMUNICATION CO Ltd SICHUAN
Priority date: 2019-01-04
Filing date: 2019-01-04
Publication date: 2019-12-31
Anticipated expiration: 2029-01-04

Abstract

The utility model discloses a transmission line icing weighing sensor, which comprises a shell (7), a solar panel (6) positioned on the outer surface of the shell, a control processing circuit (1), an inclination angle measuring circuit (2), a radio frequency communication circuit (3), a tension force measuring circuit (4) and a power module (5) which are positioned in the shell; the control processing circuit (1) is respectively connected with the inclination angle measuring circuit (2), the radio frequency communication circuit (3) and the tension measuring circuit (4), the power module (5) is connected with the solar panel (6), and the power module (5) provides a working power supply for the sensor. The utility model is in a dormant state when not being awakened, thereby greatly reducing the average power consumption; the tension and inclination measurement functions are integrated, and the artificial external interference received by the measurement data is less; the internal power supply, no signal wire or power wire is used, and the installation is simpler and more convenient.

Description

Transmission line icing weighing sensor

Technical Field

The utility model relates to a multi-functional sensor field especially relates to a transmission line icing weighing sensor.

Background

The ice coating phenomenon of the overhead transmission line ground wire under the conditions of low temperature, humidity and the like can often occur, the accidents of tower material yielding, wire breakage, ice flash tripping and the like can be caused in serious cases, the safe operation of a power system is seriously threatened, and great economic loss is caused to the society.

The overhead transmission line icing monitoring system based on the weighing method generally comprises a monitoring terminal, a communication network and a central main station, and the weighing method is direct, small in error and high in data accuracy. The monitoring terminal is composed of a data concentrator and a plurality of sensors, the data concentrator collects tension and inclination angle data of the suspension point of the insulator string monitored by the tension and inclination angle sensors, and the tension, inclination angle and wind deflection angle data are sent to the central main station through a network. The main station analyzes the data by means of a mature equivalent icing mechanical calculation model in combination with the wind speed and wind direction parameters, obtains the weight of the conductor (including the self weight of the conductor, the ice weight and the wind load) in the vertical span and calculates the equivalent icing thickness.

In practical engineering applications, there is a lack of low-power, integrated, multifunctional sensors; and a sensor integrating the functions of measuring the values of the tension and the inclination angle is also lacked, and the inclination angle sensor can only be fixed on the tension sensor in a punching or hoop mode. Thus, the measurement accuracy of the tension sensor is lowered due to the structural change, and the inclination angle measurement value is deviated due to the angle difference generated during the fixed mounting.

Disclosure of Invention

An object of the utility model is to overcome prior art's shortcoming, provide a transmission line icing weighing sensor, the sensor is in the dormant state when not awakening up, greatly reduced average power consumption, pulling force and inclination measurement function are integrated in an organic whole, and the artificial external disturbance that measured data received still less uses internal power source, and wireless line, power cord install more simply, convenient.

The purpose of the utility model is realized through the following technical scheme: a power transmission line icing weighing sensor comprises a shell, a solar panel positioned on the outer surface of the shell, and a control processing circuit, an inclination angle measuring circuit, a radio frequency communication circuit, a tension measuring circuit and a power supply module which are positioned in the shell; the control processing circuit is respectively connected with the inclination angle measuring circuit, the radio frequency communication circuit and the tension measuring circuit, the power supply module is connected with the solar panel, and the power supply module provides a working power supply for the sensor.

Furthermore, the control processing circuit is an ultra-low power consumption single chip microcomputer with a sleep function.

Further, the inclination angle measuring circuit comprises two high-precision single-axis digital inclination angle sensing chips SCA 830-D07.

Further, the tension measuring circuit comprises a conventional resistance strain gauge.

Further, the power module comprises a lithium polymer battery, a charge and discharge control circuit and a power management circuit.

Furthermore, the shell is made of corrosion-resistant and high-strength stainless steel, a small hole is formed in the upper end of the shell, and a base is arranged at the lower end of the shell.

Furthermore, the radio frequency communication circuit is in a dormant state at ordinary times, and the control processing module is awakened after receiving the awakening request command, so that the sensor starts to work.

Compared with the commonly used technology in the industry at present, the technical scheme of the patent has the following obvious advantages:

1. the sensor is in a dormant state when not being awakened, so that the average power consumption is greatly reduced;

2. the tension and inclination measurement functions are integrated, and the measurement data is less interfered by human external factors;

3. the internal power supply, no signal line and power line are used, the installation is simpler and more convenient, and the traditional mode needs to lay cables which are dozens of meters long on tower materials, so that the construction is complex and the construction difficulty is high.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

FIG. 2 is a block diagram of the internal connector of SCA 830-D07.

FIG. 3 is a pin definition diagram of SCA 830-D07.

FIG. 4 is a communication circuit diagram of a SCA830-D07 chip.

Fig. 5 is an internal block diagram of HX 711.

Fig. 6 is a structural block diagram of a tension measuring module.

Detailed Description

The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.

As shown in fig. 1 to 6, the transmission line icing weighing sensor comprises a shell 7, a solar panel 6 positioned on the outer surface of the shell, a control processing circuit 1, an inclination angle measuring circuit 2, a radio frequency communication circuit 3, a tension measuring circuit 4 and a power module 5, wherein the control processing circuit 1, the inclination angle measuring circuit 2, the radio frequency communication circuit 3, the tension measuring circuit and the power module are positioned in the shell; the control processing circuit 1 is respectively connected with the inclination angle measuring circuit 2, the radio frequency communication circuit 3 and the tension measuring circuit 4, the power module 5 is connected with the solar panel 6, and the power module 5 provides a working power supply for the sensor.

The control processing module is an ultra-low power consumption single chip microcomputer with a dormancy function.

The inclination angle measuring module uses two high-precision single-axis digital inclination angle sensing chips SCA830-D07 and can monitor the inclination angles in the x-axis direction and the y-axis direction in a horizontal plane. The SCA830-D07 is composed of a high-precision micromotor acceleration sensing element and an SPI digital interface, and the internal structure of the chip is shown in FIGS. 2 and 3.

The tension measuring circuit works by utilizing the principle that the resistance of the resistance strain gauge changes along with the deformation of the resistance strain gauge, and mainly comprises an elastic element, the resistance strain gauge, a measuring circuit and a data transmission circuit. The elastic element is used as a main stress body and can generate mechanical deformation under the action of external tension, and the resistance value of the resistance strain gauge tightly attached to the outer surface of the elastic element can change. According to the resistance change condition of the strain gauge, the process of converting the tension change into the electric signal change can be completed through a measuring circuit taking the 24-bit A/D converter chip HX711 as a core. And then, data are transmitted to the singlechip through a serial port communication mode by two pins, namely DOUT (data on Board) and PD _ SDK (digital subscriber line card) of the HX 711. The single chip microcomputer can calculate the tension value borne by the sensor at the moment according to the circuit design parameters.

The power module comprises a lithium polymer battery, a charge and discharge control circuit and a power management circuit, and provides electric energy required by work for the sensor.

The shell is made of corrosion-resistant and high-strength stainless steel, a small hole is formed in the upper end of the shell, and a base is arranged at the lower end of the shell. The external shape in the figure is only an example, and the external dimension is different because the original hardware needs to be replaced by 1 to 1 in actual installation.

The utility model provides a transmission line icing weighing sensor, when not awakening up, is in the dormant state, greatly reduced average power consumption; the tension and inclination measurement functions are integrated, and the artificial external interference received by the measurement data is less; the internal power supply, no signal line and power line are used, the installation is simpler and more convenient, and the traditional mode needs to lay cables which are dozens of meters long on tower materials, so that the construction is complex and the construction difficulty is high.

Claims

1. The utility model provides a transmission line icing weighing sensor which characterized in that: the device comprises a shell (7), a solar panel (6) positioned on the outer surface of the shell, a control processing circuit (1), an inclination angle measuring circuit (2), a radio frequency communication circuit (3), a tension measuring circuit (4) and a power supply module (5) which are positioned in the shell; the control processing circuit (1) is respectively connected with the inclination angle measuring circuit (2), the radio frequency communication circuit (3) and the tension measuring circuit (4), the power module (5) is connected with the solar panel (6), and the power module (5) provides a working power supply for the sensor.

2. The transmission line icing weighing sensor of claim 1, wherein: the control processing circuit (1) is an ultra-low power consumption single chip microcomputer with a sleep function.

3. The transmission line icing weighing sensor of claim 1, wherein: the inclination angle measuring circuit (2) comprises two high-precision single-axis digital inclination angle sensing chips SCA 830-D07.

4. The transmission line icing weighing sensor of claim 1, wherein: the tension measuring circuit (4) comprises a resistance strain gauge.

5. The transmission line icing weighing sensor of claim 1, wherein: the power module (5) comprises a lithium polymer battery, a charge and discharge control circuit and a power management circuit.

6. The transmission line icing weighing sensor of claim 1, wherein: the shell (7) is made of corrosion-resistant and high-strength stainless steel, a small hole is formed in the upper end of the shell, and a base is arranged at the lower end of the shell.

7. The transmission line icing weighing sensor of claim 1, wherein: the radio frequency communication circuit (3) is in a dormant state at ordinary times, and wakes up the control processing module after receiving the wake-up request command, so that the sensor starts to work.