An automatic parking system for an underground explosion-proof vehicle, an underground explosion-proof vehicle and a method

Abstract

The application discloses an automatic parking system of an underground explosion-proof vehicle, the underground explosion-proof vehicle and a method, and relates to the technical field of coal mine safety, wherein the automatic parking system collects a vehicle speed signal through a vehicle speed collecting unit; a pressure collecting unit collects a pressure signal; a control unit obtains pipeline pressure according to the pressure signal, collects an on-off signal when contact closure state of a brake releasing unit, generates a first control signal to make a voice prompting unit generate a prompting voice when the pipeline pressure is greater than a pressure threshold value, time during which the vehicle speed signal is not collected is greater than a first time threshold value, and interval time between the current collected on-off signal and the last collected on-off signal is greater than a second time threshold value; and a parking unit opens a parking hydraulic pipeline according to the first control signal to implement automatic parking; the application can realize zero-speed automatic parking and reduce safety hazards.

Description

Technical Field

[0001] This invention relates to the field of coal mine safety technology, and in particular to an automatic parking system for underground explosion-proof vehicles, an underground explosion-proof vehicle, and a method thereof. Background Technology

[0002] With the continuous development of the mining industry, the frequency of use of explosion-proof vehicles underground is increasing, and transportation safety has become a major concern for the industry. Currently, most explosion-proof vehicles underground are operated by drivers who control the vehicle to move forward, stop, and start. In underground mining operations, due to terrain and environmental factors, drivers often need to drive and stop on steep slopes. Driving in the limited height of mining areas requires high driver skills, is difficult to operate, and is prone to traffic accidents. If the driver has weak safety awareness or is momentarily negligent, and the vehicle is not braked at zero speed, it is easy for the vehicle to roll away, posing a safety hazard and potentially causing personal injury and property damage. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic parking system, an explosion-proof vehicle, and a method for underground explosion-proof vehicles, which can achieve automatic parking at zero speed and reduce safety hazards.

[0004] To achieve the above objectives, the present invention provides the following solution:

[0005] An automatic parking system for an underground explosion-proof vehicle is disclosed. The automatic parking system is connected to the vehicle's de-brake unit, speed gear, handbrake line, and parking hydraulic line. The automatic parking system includes a vehicle speed acquisition unit, a pressure acquisition unit, a control unit, a parking unit, and a voice prompt unit.

[0006] The vehicle speed acquisition unit is connected to the rotation speed gear of the underground explosion-proof vehicle, and the vehicle speed acquisition unit is used to acquire vehicle speed signals; the pressure acquisition unit is connected to the handbrake line of the underground explosion-proof vehicle, and the pressure acquisition unit is used to acquire pressure signals.

[0007] The control unit is connected to the vehicle speed acquisition unit, the pressure acquisition unit, and the de-braking unit, and the control unit is used for:

[0008] The pipeline pressure is obtained based on the pressure signal.

[0009] Collect the switching signal when the contacts of the de-braking unit are closed;

[0010] When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and the interval between the current collected switch signal and the last collected switch signal is greater than the second time threshold, a first control signal is generated.

[0011] The parking unit and the voice reminder unit are both connected to the control unit; the parking unit is connected to the parking hydraulic line of the underground explosion-proof vehicle; the voice reminder unit is used to generate a reminder voice according to the first control signal; the parking unit is used to open the parking hydraulic line according to the first control signal to implement automatic parking.

[0012] Optionally, the automatic parking system further includes:

[0013] The functional unit is connected to the control unit; the control unit is used to collect the opening and closing signals when the contacts of the functional unit are closed, and to enable the automatic parking function according to the opening and closing signals.

[0014] Optionally, the automatic parking system further includes:

[0015] The display unit is connected to the control unit;

[0016] The control unit is also used for:

[0017] When the pipeline pressure is greater than the pressure threshold, and the time during which the vehicle speed signal is not collected is less than or equal to the first time threshold, and no switch signal is collected, a second control signal is generated.

[0018] When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and a switch signal is collected, a third control signal is generated.

[0019] When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and the interval between the current collected switch signal and the last collected switch signal is less than or equal to the second time threshold, a fourth control signal is generated.

[0020] The display unit is used to display the first parking status, the second parking status, the third parking status, and the fourth parking status respectively according to the first control signal, the second control signal, the third control signal, and the fourth control signal.

[0021] Optionally, the control unit is further configured to:

[0022] When the pipeline pressure is less than the pressure threshold, a fifth control signal is generated, and the voice reminder unit and the display unit are turned off according to the fifth control signal.

[0023] Optionally, the control unit is further configured to obtain vehicle speed data based on the vehicle speed signal; the display unit displays the vehicle speed data.

[0024] To achieve the above objectives, the present invention also provides the following solution:

[0025] An explosion-proof underground vehicle includes an automatic parking system, a brake release unit, a speed gear, a handbrake line, and a parking hydraulic line; wherein the automatic parking system is connected to the brake release unit, the speed gear, the handbrake line, and the parking hydraulic line.

[0026] To achieve the above objectives, the present invention also provides the following solution:

[0027] An automatic parking method for an underground explosion-proof vehicle, wherein the automatic parking method is applied to the aforementioned automatic parking system for underground explosion-proof vehicles; the automatic parking method includes:

[0028] The pipeline pressure is obtained based on the pressure signal acquired by the pressure acquisition unit;

[0029] Acquire the switching signal when the contacts of the de-braking unit are closed;

[0030] When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and the interval between the current collected switch signal and the last collected switch signal is greater than the second time threshold, a first control signal is generated to control the voice reminder unit to generate a reminder voice, and to control the parking unit to implement automatic parking.

[0031] Optionally, the automatic parking method further includes:

[0032] The first control signal is used to control the display unit to display the first parking status;

[0033] When the pipeline pressure is greater than the pressure threshold, and the time during which the vehicle speed signal is not collected is less than or equal to the first time threshold, and no switch signal is collected, a second control signal is generated to control the display unit to display the second parking status.

[0034] When the pipeline pressure is greater than the pressure threshold, and the time during which the vehicle speed signal is not collected is greater than the first time threshold, and a switch signal is collected, a third control signal is generated to control the display unit to display the third parking status.

[0035] When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and the interval between the current collected switch signal and the last collected switch signal is less than or equal to the second time threshold, a fourth control signal is generated to control the display unit to display the fourth parking state.

[0036] Optionally, the automatic parking method further includes:

[0037] When the pipeline pressure is less than the pressure threshold, a fifth control signal is generated to control the shutdown of the voice reminder unit and the display unit.

[0038] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0039] This invention discloses an automatic parking system for underground explosion-proof vehicles, an underground explosion-proof vehicle, and a method thereof; the automatic parking system acquires vehicle speed signals through a vehicle speed acquisition unit; acquires pressure signals through a pressure acquisition unit; the control unit generates a first control signal based on the contact closure state of the de-braking unit and different conditions met; furthermore, the voice reminder unit generates a reminder voice based on the first control signal; and the parking unit opens the parking hydraulic line based on the first control signal to implement automatic parking.

[0040] This invention generates a control signal by comparing the data obtained by the control unit with a set threshold, and implements automatic parking when the vehicle speed is zero to ensure the safe operation of the explosion-proof vehicle in the mine and reduce the occurrence of dangerous accidents. Attached Figure Description

[0041] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the automatic parking system for explosion-proof vehicles in underground mines according to the present invention;

[0043] Figure 2 This is a flowchart illustrating the automatic parking method for explosion-proof vehicles in underground mines according to the present invention.

[0044] Figure 3 This is a flowchart illustrating a specific embodiment of the present invention;

[0045] Figure 4 This is a schematic diagram of the vehicle speed acquisition unit detection of the present invention.

[0046] Symbol explanation:

[0047] Vehicle speed acquisition unit-1, pressure acquisition unit-2, control unit-3, brake release unit-4, voice reminder unit-5, parking unit-6, speed gear-7. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] The purpose of this invention is to provide an automatic parking system, an explosion-proof vehicle, and a method for underground explosion-proof vehicles, which can achieve automatic parking at zero speed and reduce safety hazards.

[0050] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0051] like Figure 1 As shown, the present invention provides an automatic parking system for an underground explosion-proof vehicle. The automatic parking system is connected to the de-brake unit 4, the speed gear 7, the handbrake line, and the parking hydraulic line of the underground explosion-proof vehicle. The automatic parking system includes: a vehicle speed acquisition unit 1, a pressure acquisition unit 2, a control unit 3, a parking unit 6, and a voice reminder unit 5.

[0052] The vehicle speed acquisition unit 1 is connected to the rotation speed gear 7 of the underground explosion-proof vehicle, and the vehicle speed acquisition unit 1 is used to acquire vehicle speed signals; the pressure acquisition unit 2 is connected to the handbrake pipeline of the underground explosion-proof vehicle, and the pressure acquisition unit 2 is used to acquire pressure signals.

[0053] The control unit 3 is connected to the vehicle speed acquisition unit 1, the pressure acquisition unit 2, and the de-braking unit 4. The control unit 3 is used for:

[0054] The pipeline pressure is obtained based on the pressure signal.

[0055] Collect the switching signal when the contacts of the de-braking unit 4 are closed;

[0056] A first control signal is generated when the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and the interval between the current collected switch signal and the last collected switch signal is greater than the second time threshold.

[0057] The parking unit 6 and the voice reminder unit 5 are both connected to the control unit 3; the parking unit 6 is connected to the parking hydraulic pipeline of the underground explosion-proof vehicle; the voice reminder unit 5 is used to generate a reminder voice according to the first control signal; the parking unit 6 is used to open the parking hydraulic pipeline according to the first control signal to implement automatic parking.

[0058] The notification voice message is "The vehicle has stopped. Please apply the parking brake."

[0059] like Figure 4As shown, the vehicle speed acquisition unit 1 is a vehicle speed sensor; the explosion-proof type of the vehicle speed sensor is intrinsically safe for mining; the vehicle speed sensor includes a magnetoresistive sensor; since the rotating gear 7 has raised or recessed magnetic or magnetically conductive materials, as the rotating gear 7 rotates, the vehicle speed sensor outputs a pulse signal (i.e., vehicle speed signal) related to its rotation frequency, specifically a rectangular wave voltage signal.

[0060] The de-braking unit 4 of the underground explosion-proof vehicle is a de-braking button; the explosion-proof type of the de-braking button is intrinsically safe for mining; when the driver presses the de-braking button, the contact state changes from the open contact state to the closed contact state; when the driver releases the button, the contact state changes from the closed contact state to the open contact state.

[0061] The pressure acquisition unit 2 is a pressure sensor; the explosion-proof type of the pressure sensor is intrinsically safe for mining; when the pipeline pressure is greater than the pressure threshold, the contact state of the pressure sensor switches from the open contact state to the closed contact state; when the pipeline pressure is less than the pressure threshold, the contact state of the pressure sensor switches from the closed contact state to the open contact state.

[0062] The control unit 3 is a vehicle protection controller; the explosion-proof type of the vehicle protection controller is a mining explosion-proof and intrinsically safe type. The voice reminder unit 5 is a voice reminder device; the explosion-proof type of the voice reminder device is a mining potting and intrinsically safe type.

[0063] Furthermore, the automatic parking system also includes: a functional unit.

[0064] The functional unit is connected to the control unit 3; the control unit 3 is used to collect the opening and closing signals when the contacts of the functional unit are closed, and to enable the automatic parking function according to the opening and closing signals.

[0065] The functional unit is a function button; the explosion-proof type of the function button is intrinsically safe for mining; when the driver presses the function button, the function button is activated, the contact state changes from open contact to closed contact, and it self-locks; after being released, the contact state remains unchanged; when the driver presses the function button again, the function button is deactivated, and the contact state changes from closed contact to open contact.

[0066] In addition, the automatic parking system also includes a display unit.

[0067] The display unit is connected to the control unit 3.

[0068] The control unit 3 is also used for:

[0069] When the pipeline pressure is greater than the pressure threshold, and the time during which the vehicle speed signal is not collected is less than or equal to the first time threshold, and no switch signal is collected, a second control signal is generated.

[0070] When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and a switch signal is collected, a third control signal is generated.

[0071] A fourth control signal is generated when the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and the interval between the current collected switch signal and the last collected switch signal is less than or equal to the second time threshold.

[0072] The display unit is used to display the first parking status, the second parking status, the third parking status, and the fourth parking status respectively according to the first control signal, the second control signal, the third control signal, and the fourth control signal.

[0073] The display unit is a vehicle display; the explosion-proof type of the vehicle display is intrinsically safe for mining; the vehicle display interacts with the vehicle protection controller via a CAN bus; the vehicle display is used to display information such as whether the automatic parking function is activated, parking status, and vehicle speed.

[0074] The first parking state is "Auto Park P". The second parking state is "Auto Park Release". The third parking state is "Auto Park Release". The fourth parking state is "Auto Park Release".

[0075] Optionally, the control unit 3 is further configured to:

[0076] When the pipeline pressure is less than the pressure threshold, a fifth control signal is generated, and the voice reminder unit 5 and the display unit are turned off according to the fifth control signal.

[0077] Optionally, the control unit 3 is further configured to obtain vehicle speed data based on the vehicle speed signal; the display unit displays the vehicle speed data.

[0078] To achieve the above objectives, the present invention also provides the following solution:

[0079] An explosion-proof underground vehicle includes an automatic parking system, a brake release unit 4, a speed gear 7, a handbrake line, and a parking hydraulic line; wherein the automatic parking system is connected to the brake release unit 4, the speed gear 7, the handbrake line, and the parking hydraulic line.

[0080] like Figure 2As shown, the present invention also provides an automatic parking method for an underground explosion-proof vehicle, wherein the automatic parking method is applied to the above-mentioned automatic parking system for underground explosion-proof vehicles; the automatic parking method includes:

[0081] S1: Obtain the pipeline pressure based on the pressure signal collected by pressure acquisition unit 2.

[0082] S2: Collect the switching signal when the contacts of the de-braking unit 4 are closed.

[0083] S3: When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and the interval between the current collected switch signal and the last collected switch signal is greater than the second time threshold, a first control signal is generated to control the voice reminder unit 5 to generate a reminder voice, and to control the parking unit 6 to implement automatic parking.

[0084] Furthermore, the automatic parking method also includes:

[0085] The first control signal controls the display unit to display the first parking status.

[0086] When the pipeline pressure is greater than the pressure threshold, and the time during which the vehicle speed signal is not collected is less than or equal to the first time threshold, and no switch signal is collected, a second control signal is generated to control the display unit to display the second parking status.

[0087] When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and a switch signal is collected, a third control signal is generated to control the display unit to display the third parking status.

[0088] When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and the interval between the current collected switch signal and the last collected switch signal is less than or equal to the second time threshold, a fourth control signal is generated to control the display unit to display the fourth parking state.

[0089] In addition, the automatic parking method also includes:

[0090] When the pipeline pressure is less than the pressure threshold, a fifth control signal is generated to control the voice reminder unit 5 and the display unit to turn off. Specific Implementation

[0092] like Figure 3 As shown, the execution flow is as follows:

[0093] The driver first inspects the explosion-proof vehicle underground. After the self-inspection is completed, the driver starts the explosion-proof vehicle underground.

[0094] The control unit 3 first acquires the signal. After acquiring the opening and closing signal, it checks whether the pipeline pressure is greater than the pressure threshold. If no opening and closing signal is acquired, the relay is de-energized.

[0095] If the pipeline pressure is greater than the pressure threshold, the handbrake will not be engaged; if the handbrake is engaged, the relay will be de-energized.

[0096] Control unit 3 detects whether the vehicle speed is 0 (i.e., whether a vehicle speed signal is collected); if the vehicle speed is not 0 (i.e., a vehicle speed signal is collected), the relay is de-energized.

[0097] If the vehicle speed is 0 (i.e. no vehicle speed signal is collected), the control unit 3 checks whether the duration of the vehicle speed being 0 is less than or equal to 5 seconds. If not, it checks whether a switch signal is received when the contact of the release brake button is closed. If the duration of the vehicle speed being 0 is less than or equal to 5 seconds, the relay is de-energized.

[0098] If the interval between the current switch signal acquired by control unit 3 and the previous switch signal acquired is greater than 20 seconds, the relay is energized, and control unit 3 generates the first control signal; otherwise, the relay is de-energized. When the relay is de-energized, parking unit 6 does not operate, and the brake is released; the display unit displays that the automatic parking is released.

[0099] When the relay is energized, the parking unit 6 opens the parking hydraulic line according to the first control signal, implementing automatic parking. The voice reminder unit 5 generates a reminder voice according to the first control signal. The display unit displays the first parking status.

[0100] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The methods disclosed in the embodiments are described simply because they correspond to the systems disclosed in the embodiments; relevant details can be found in the method section.

[0101] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An automatic parking system for explosion-proof vehicles in underground mines, characterized in that, The automatic parking system is connected to the de-brake unit, speed gear, handbrake line, and parking hydraulic line of the underground explosion-proof vehicle; the automatic parking system includes: a vehicle speed acquisition unit, a pressure acquisition unit, a control unit, a parking unit, and a voice prompt unit; The vehicle speed acquisition unit is connected to the rotation speed gear of the underground explosion-proof vehicle, and the vehicle speed acquisition unit is used to acquire vehicle speed signals; the pressure acquisition unit is connected to the handbrake line of the underground explosion-proof vehicle, and the pressure acquisition unit is used to acquire pressure signals. The control unit is connected to the vehicle speed acquisition unit, the pressure acquisition unit, and the de-braking unit, and the control unit is used for: The pipeline pressure is obtained based on the pressure signal. Collect the switching signal when the contacts of the de-braking unit are closed; When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and the interval between the current collected switch signal and the last collected switch signal is greater than the second time threshold, a first control signal is generated. The parking unit and the voice reminder unit are both connected to the control unit; the parking unit is connected to the parking hydraulic line of the underground explosion-proof vehicle; the voice reminder unit is used to generate a reminder voice according to the first control signal; the parking unit is used to open the parking hydraulic line according to the first control signal to implement automatic parking; The automatic parking system also includes: The display unit is connected to the control unit; The control unit is also used for: When the pipeline pressure is greater than the pressure threshold, and the time during which the vehicle speed signal is not collected is less than or equal to the first time threshold, and no switch signal is collected, a second control signal is generated. When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and a switch signal is collected, a third control signal is generated. When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and the interval between the current collected switch signal and the last collected switch signal is less than or equal to the second time threshold, a fourth control signal is generated. The display unit is used to display the first parking status, the second parking status, the third parking status, and the fourth parking status respectively according to the first control signal, the second control signal, the third control signal, and the fourth control signal.

2. The automatic parking system for explosion-proof vehicles in underground mines according to claim 1, characterized in that, The automatic parking system also includes: The functional unit is connected to the control unit; the control unit is used to collect the opening and closing signals when the contacts of the functional unit are closed, and to enable the automatic parking function according to the opening and closing signals.

3. The automatic parking system for explosion-proof vehicles in underground mines according to claim 1, characterized in that, The control unit is also used for: When the pipeline pressure is less than the pressure threshold, a fifth control signal is generated, and the voice reminder unit and the display unit are turned off according to the fifth control signal.

4. The automatic parking system for explosion-proof vehicles in underground mines according to claim 1, characterized in that, The control unit is also used to obtain vehicle speed data based on the vehicle speed signal; the display unit displays the vehicle speed data.

5. An explosion-proof vehicle for underground mining, characterized in that, The underground explosion-proof vehicle includes an automatic parking system, a brake release unit, a speed gear, a handbrake line, and a parking hydraulic line as described in any one of claims 1-4; wherein the automatic parking system is connected to the brake release unit, the speed gear, the handbrake line, and the parking hydraulic line respectively.

6. A method for automatic parking of an explosion-proof vehicle in an underground mine, characterized in that, The automatic parking method is applied to the automatic parking system for downhole explosion-proof vehicles according to any one of claims 1-4; the automatic parking method includes: The pipeline pressure is obtained based on the pressure signal acquired by the pressure acquisition unit; Acquire the switching signal when the contacts of the de-braking unit are closed; When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and the interval between the current collected switch signal and the last collected switch signal is greater than the second time threshold, a first control signal is generated to control the voice reminder unit to generate a reminder voice, and to control the parking unit to implement automatic parking.

7. The automatic parking method for underground explosion-proof vehicles according to claim 6, characterized in that, The automatic parking method also includes: The first control signal is used to control the display unit to display the first parking status; When the pipeline pressure is greater than the pressure threshold, and the time during which the vehicle speed signal is not collected is less than or equal to the first time threshold, and no switch signal is collected, a second control signal is generated to control the display unit to display the second parking status. When the pipeline pressure is greater than the pressure threshold, and the time during which the vehicle speed signal is not collected is greater than the first time threshold, and a switch signal is collected, a third control signal is generated to control the display unit to display the third parking status. When the pipeline pressure is greater than the pressure threshold, the time during which the vehicle speed signal is not collected is greater than the first time threshold, and the interval between the current collected switch signal and the last collected switch signal is less than or equal to the second time threshold, a fourth control signal is generated to control the display unit to display the fourth parking state.

8. The automatic parking method for underground explosion-proof vehicles according to claim 6, characterized in that, The automatic parking method also includes: When the pipeline pressure is less than the pressure threshold, a fifth control signal is generated to control the shutdown of the voice reminder unit and the display unit.

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