Detection device and method for working surface, terminal, and storage medium

A detection device for a working face, comprising:

• a plurality of hydraulic supports, two laser ranging groups, a plurality of displacement sensors, a signal convertor and a plurality of support controllers, which are arranged on the working face,
• wherein each laser ranging group is arranged below a top beam of a respective one of two first target hydraulic supports of the plurality of hydraulic supports and is parallel to a pillar of the respective one of the two first target hydraulic supports, wherein each laser ranging group is configured to determine an error length and send the error length to the signal convertor, wherein the error length is configured to represent an error between a length measured by a respective one of the two laser ranging groups and a length of the working face;
• wherein each displacement sensor is arranged in an advancing oil cylinder of a respective one of the plurality of hydraulic supports, and is configured to obtain at least an inclination of the respective one of the plurality of hydraulic supports and send the inclination to the signal convertor;
• wherein the signal convertor is configured to convert the error length and the inclination into electrical signals and send the electrical signals to a support controller of a respective one of the two first target hydraulic supports;
• wherein the plurality of support controllers are configured to determine working parameters of the plurality of hydraulic supports based on the electrical signals to adjust postures of the plurality of hydraulic supports based on the working parameters;
• wherein one of the two first target hydraulic supports is a first hydraulic support among the plurality of hydraulic supports arranged at one end of the working face, and another one of the two first target hydraulic supports is a last hydraulic support among the plurality of hydraulic supports arranged at another end of the working face, and the length of the working face is a distance between the first hydraulic support and the last hydraulic support;
• wherein each laser ranging group comprises a laser range finder holder, a wireless network component and three laser range finders, which are a first laser range finder, a second laser range finder, and a third laser range finder;
• wherein the three laser range finders are arranged on the laser range finder holder, and are configured to determine the error length;
• wherein the laser range finder holder is arranged below the top beam of the respective one of the two first target hydraulic supports and is parallel to the pillar of the respective one of the two first target hydraulic supports, and the laser range finder holder is configured to fix the three laser range finders;
• wherein the first laser range finder is configured to determine a first length between a respective one of the two first target hydraulic supports where the first laser range finder is located and a hydraulic support blocking a laser line emitted by the first laser range finder;
• wherein the second laser range finder is configured to determine a second length between the respective one of the two first target hydraulic supports where the second laser range finder is located and a hydraulic support blocking a laser line emitted by the second laser range finder;
• wherein the third laser range finder is configured to determine a third length between the respective one of the two first target hydraulic supports where the third laser range finder is located and a hydraulic support blocking a laser line emitted by the third laser range finder;
• wherein a line connecting a center of a laser emitting cavity of the first laser range finder and a center of a laser emitting cavity of the second laser range finder is parallel to a piston rod of a pillar of the respective one of the two first target hydraulic supports;
• wherein a plane formed by the three laser range finders is perpendicular to a plane formed by center lines of two pillars of the respective one of the two first target hydraulic supports;
• wherein the first laser range finder and the second laser range finder are arranged on a side of the laser range finder holder away from a coal wall, and the third laser range finder is arranged on a side of the laser range finder holder close to the coal wall;
• wherein the wireless network component is configured to perform wireless networking on the three laser range finders and obtain the first length, the second length and the third length, and determine the error length based on the first length, the second length, the third length and the length of the working face, and send the error length to the signal convertor;
• wherein each of the plurality of hydraulic supports comprises an advancing oil circuit reversing valve and at least one digital flow regulating valve;
• wherein the plurality of support controllers are configured to determine the working parameters of the plurality of hydraulic supports based on electrical signals corresponding to each of the first length, the second length and the third length, and determine and control, based on the working parameters, a working position of an advancing oil circuit reversing valve of a second target hydraulic support, of which a posture needs to be adjusted, of the plurality of hydraulic supports;
• wherein the advancing oil circuit reversing valve is configured to adjust the posture of the second target hydraulic support based on the working position;
• wherein the plurality of support controllers are configured to determine the working parameters of the plurality of hydraulic supports based on the electrical signals corresponding to each of the first length, the second length and the third length, and determine and control a regulating operation of at least one digital flow regulating valve of the second target hydraulic support based on the working parameters;
• and
• wherein the at least one digital flow regulating valve is configured to adjust the posture of the second target hydraulic support based on the regulating operation.