Battery life protection method and device for mining miniature positioning equipment

Abstract

The invention relates to a battery life protection method and device for mining miniature positioning equipment, and belongs to the field of underground coal mine safety. The mining miniature positioning equipment aims to solve the problem that the existing mining miniature positioning equipment cannot meet the standard requirement of the service life of a battery because the power loss of the battery is too fast in the transportation and storage process. According to the invention, the battery is physically disconnected from a hardware circuit, and the piezoelectric conversion unit, the electricity storage unit, the current limiting unit, the judgment unit, the switch unit and other components are utilized, so that no-load discharge of the battery is realized before the equipment is started, electric energy is generated through shaking and vibration, and the electric energy is transmitted to the battery unit when a starting condition is met; therefore, the startup of the equipment is realized. According to the invention, a key structure does not need to be arranged on an equipment shell, so that the whole machine structure is simplified, the waterproof and dustproof performance is improved, and meanwhile, the situation that startup cannot be carried out due to mistaken pressing or key damage is avoided. And through fixed-number and fixed-time starting, the service life of the battery is protected to the greatest extent, and the use efficiency of the equipment is improved.

Description

Technical Field

[0001] The invention belongs to the field of underground coal mine safety and relates to a battery life protection method and device for a mining micro positioning device. Background Art

[0002] AQ1119-2023 "General Technical Requirements for Coal Mine Underground Personnel Positioning Systems" requires that the battery life of positioning cards with non-replaceable batteries should be no less than 2 years, and the battery life of positioning cards with replaceable batteries should be no less than 6 months. This requires that in the design and use of mining micro positioning equipment, ways should be found to reduce battery power loss.

[0003] The mining micro positioning equipment referred to in the present invention includes positioning cards, mining lamps, vehicle positioning cards and other micro positioning equipment. In the design and production process, there are the following problems:

[0004] 1) Before leaving the factory, the battery of the positioning device was fully charged. However, when the positioning device was transported to the coal mine, it was not used immediately but stored. Some of them were stored for more than 6 months or even more than 1 year.

[0005] 2) Before the device is normally enabled, it is designed to be in low power mode. In low power mode, there is a small current in the circuit, and the battery continues to discharge under load. There is no physical disconnection between the battery and the motherboard. Only when the operator sends a wireless signal power-on command to a large number of positioning devices, the positioning devices within the coverage of the wireless signal will be powered on.

[0006] The above problems cause the battery to continue to discharge under load during transportation and storage, which reduces the battery life. As a result, the positioning device cannot meet the battery life requirements in AQ1119-2023 after it is actually enabled. Summary of the invention

[0007] In view of this, the purpose of the present invention is to provide a method and device for protecting the battery life of a mining micro positioning device. Before the mining micro positioning device is activated, the battery is always in a discharge working state with load because there is no physical disconnection between the battery and the mainboard circuit. If the transportation time is long or the storage time is long, the battery power will not meet the standard requirements.

[0008] By adopting the present invention, the battery of the positioning device is physically disconnected from the hardware circuit, and the battery is in a no-load discharge state, which further reduces the battery power loss and protects the battery. There is no need to design buttons in the structure, which simplifies the structure of the whole machine and improves the waterproof and dustproof performance; it prevents the button from being pressed by mistake to start the machine or the button is broken and cannot be turned on. There is no need to send wireless signal instructions to start the machines in batches, which avoids the situation where some positioning devices that do not need to be turned on are caused to start up by wireless signal power-on instructions.

[0009] In order to achieve the above object, the present invention provides the following technical solutions:

[0010] A method for protecting the battery life of a mining micro positioning device comprises the following steps:

[0011] Physically disconnect the battery of the mining micro positioning device from the hardware circuit through the switch unit to put the battery in a no-load discharge state;

[0012] When the device needs to be activated, shake and vibrate it for a certain amplitude and time;

[0013] The piezoelectric conversion unit in the device converts the mechanical energy of shaking and vibration into electrical energy, which is then stored by the power storage unit;

[0014] When the electric energy stored in the power storage unit reaches a certain size, the current is limited by the current limiting unit, prompting the switch unit to close and connect the battery to the hardware circuit;

[0015] The judgment unit judges the current size and the device posture. If it meets the power-on setting requirements, the switch unit is kept closed to complete the device startup; if it does not meet the power-on setting requirements, the switch unit is disconnected and the battery returns to the no-load discharge state.

[0016] Furthermore, the piezoelectric conversion unit includes a piezoelectric fiber composite material and a vibration auxiliary mechanism; there is a mechanical connection between the piezoelectric fiber composite material and the vibration auxiliary mechanism to transmit the vibration of the vibration auxiliary mechanism to the piezoelectric fiber composite material, so that it generates electrical energy.

[0017] Furthermore, the judgment unit includes an MCU chip and a posture sensor; data is transmitted between the MCU chip and the posture sensor so that the MCU chip can obtain the posture information of the device and make a judgment.

[0018] A battery life protection device for a mining micro positioning device, comprising:

[0019] A piezoelectric conversion unit for converting the mechanical energy generated during shaking into electrical energy;

[0020] An electric storage unit, used for storing the electric energy output by the piezoelectric conversion unit;

[0021] A current limiting unit, used for limiting the current of the circuit;

[0022] A judgment unit, used to judge the magnitude of the current, judge the posture of the positioning device, and control the closing of the switch unit;

[0023] A switch unit, used for closing and opening control of the switch;

[0024] Battery unit, used to power the positioning device.

[0025] Furthermore, the piezoelectric conversion unit includes a piezoelectric fiber composite material and a vibration auxiliary mechanism; there is a mechanical connection between the piezoelectric fiber composite material and the vibration auxiliary mechanism to transmit the vibration of the vibration auxiliary mechanism to the piezoelectric fiber composite material, so that it generates electrical energy.

[0026] Furthermore, the judgment unit includes an MCU chip and a posture sensor; data is transmitted between the MCU chip and the posture sensor so that the MCU chip can obtain the posture information of the device and make a judgment.

[0027] The beneficial effect of the present invention is that: by adopting the present invention, the battery life of the device is protected to the maximum extent, and at the same time, the startup caused by invalid shaking is shielded, thereby ensuring the use time of the device and improving the use efficiency of the device.

[0028] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and to some extent, will be obvious to those skilled in the art based on the following examination and study, or can be taught from the practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be described in detail below in conjunction with the accompanying drawings, wherein:

[0030] Figure 1 Schematic diagram of battery life protection device

[0031] Figure 2 Schematic diagram of battery life protection method

[0032] Figure 3 This is a hardware block diagram. DETAILED DESCRIPTION

[0033] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0034] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0035] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "front", "rear", etc. indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] By adopting the battery life protection method disclosed in this technical patent, the battery can be physically disconnected from the hardware circuit during circuit design to prevent the battery from working under load before the device is turned on.

[0037] The technical patent discloses that when the mining micro positioning device is shaken back and forth for a certain amplitude and time, the piezoelectric conversion unit in the device generates a current signal, prompting the battery and the hardware circuit switch to close, thereby completing the device startup work. And according to the number of positioning devices used, the device is started at a fixed time to maximize the battery effect.

[0038] ⅠBattery life protection device

[0039] The battery life protection device is as follows Figure 1 As shown, including:

[0040] 1) Piezoelectric conversion unit, which is used to convert the mechanical energy generated during shaking into electrical energy.

[0041] 2) Power storage unit: used to store the electric energy output by the piezoelectric conversion unit.

[0042] 3) Current limiting unit: used to limit the current of the circuit.

[0043] 4) Judgment unit: used to judge the current size, the posture of the positioning device, and control the closing of the switch.

[0044] 5) Switching unit: used for closing and opening control of the switch.

[0045] 6) Battery unit: used to power the positioning device.

[0046] Ⅱ Battery life protection method

[0047] After adopting the above battery life protection device, the battery life protection method is as follows: before the mining micro positioning equipment leaves the factory, the battery in the equipment is fully charged. Before the equipment is transported, stored, or activated, the battery in the equipment is physically disconnected from the mainboard by a switch, and the entire circuit is in a no-load working state. When the equipment needs to be activated, the equipment needs to be shaken and vibrated for a certain amplitude and time. The piezoelectric conversion unit in the equipment converts the mechanical energy of the shaking and vibration into electrical energy, and the power storage unit stores this electrical energy. When the electrical energy reaches a certain size, after current limiting, the switch between the battery and the hardware circuit is closed, and then the judgment unit judges whether the current size and the device posture belong to the power-on condition. When the current size and the device posture meet the power-on setting requirements, the switch between the battery and the hardware circuit remains closed, otherwise it is disconnected, and the battery returns to the no-load working state, thereby protecting the battery life to the maximum extent. Figure 2 shown.

[0048] Ⅲ Hardware design part

[0049] The battery life protection device is composed of MCU chip, piezoelectric fiber composite material, vibration auxiliary mechanism, MOS tube, battery, current limiting element, storage capacitor, posture sensor and other components. The vibration auxiliary mechanism is to provide a vibrating adhesive surface for the piezoelectric fiber composite material; the piezoelectric fiber composite material can convert the mechanical energy of shaking vibration into electrical energy; a good mechanical connection needs to be achieved between the piezoelectric fiber composite material and the vibration auxiliary mechanism so that the vibration generated by the vibration auxiliary mechanism can be effectively transmitted to the piezoelectric fiber composite material, thereby generating electrical energy. The storage capacitor circuit can store the electrical energy generated by the piezoelectric fiber composite material; the current limiting circuit is responsible for limiting the current of the circuit so that the current size meets the needs of the motherboard; the posture sensor is responsible for transmitting the current posture of the device and feeding it back to the MCU chip; the connection relationship between the MCU chip and the posture sensor needs to realize data transmission so that the MCU chip can obtain the posture information of the device and make judgments. The MOS tube is used as part of a switch circuit; the battery is responsible for powering the motherboard; the MCU chip is responsible for information judgment, storage and driving, etc.

[0050] The battery life protection device has a structure including a piezoelectric conversion unit, a power storage unit, a current limiting unit, a judgment unit, a switch unit, and a battery unit. There are three connection modes: connecting the piezoelectric conversion unit, the power storage unit, the current limiting unit, the judgment unit, and the switch unit in series in sequence, and connecting the battery unit to the output end of the switch unit; connecting the piezoelectric conversion unit and the power storage unit in parallel, and then connecting the current limiting unit, the judgment unit, and the switch unit in series to the battery unit. Connecting the piezoelectric conversion unit and the power storage unit in series, and then connecting the current limiting unit, the judgment unit, and the switch unit in parallel to the battery unit.

[0051] By adopting the battery life protection device, there is no need to arrange a button structure on the housing structure of the device.

[0052] The battery life protection method can realize the battery working without load before the device is turned on.

[0053] The battery life protection method requires shaking the device to a certain amplitude and time to generate a current sufficient to drive the switch to close.

[0054] The battery life protection method requires the device to be shaken in a set posture before it can be turned on.

[0055] The hardware structure is mainly composed of MCU chip, piezoelectric fiber composite material, vibration auxiliary mechanism, MOS tube, battery, current limiting element, storage capacitor, posture sensor and other components.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution, which should be included in the scope of the claims of the present invention.

Claims

1. A method for protecting the battery life of a micro positioning device for mining, characterized in that: The following steps are involved: Physically disconnect the battery of the mining micro positioning device from the hardware circuit through the switch unit to put the battery in a no-load discharge state; When the device needs to be activated, shake and vibrate it for a certain amplitude and time; The piezoelectric conversion unit in the device converts the mechanical energy of shaking and vibration into electrical energy, which is then stored by the power storage unit; When the electric energy stored in the power storage unit reaches a certain size, the current is limited by the current limiting unit, prompting the switch unit to close and connect the battery to the hardware circuit; The judgment unit judges the current size and the device posture. If it meets the power-on setting requirements, the switch unit is kept closed to complete the device startup; if it does not meet the power-on setting requirements, the switch unit is disconnected and the battery returns to the no-load discharge state.

2. The method for protecting the battery life of a mining micro positioning device according to claim 1, characterized in that: The piezoelectric conversion unit includes a piezoelectric fiber composite material and a vibration auxiliary mechanism; there is a mechanical connection between the piezoelectric fiber composite material and the vibration auxiliary mechanism to transmit the vibration of the vibration auxiliary mechanism to the piezoelectric fiber composite material, so that it generates electrical energy.

3. The method for protecting the battery life of a mining micro positioning device according to claim 1, characterized in that: The judgment unit includes an MCU chip and a posture sensor; data is transmitted between the MCU chip and the posture sensor so that the MCU chip can obtain the posture information of the device and make a judgment.

4. A battery life protection device for a mining micro positioning device, characterized in that: include: A piezoelectric conversion unit for converting the mechanical energy generated during shaking into electrical energy; An electric storage unit, used for storing the electric energy output by the piezoelectric conversion unit; A current limiting unit, used for limiting the current of the circuit; A judgment unit, used to judge the magnitude of the current, judge the posture of the positioning device, and control the closing of the switch unit; A switch unit, used for closing and opening control of the switch; Battery unit, used to power the positioning device.

5. The battery life protection device for a mining micro positioning device according to claim 4, characterized in that: The piezoelectric conversion unit includes a piezoelectric fiber composite material and a vibration auxiliary mechanism; there is a mechanical connection between the piezoelectric fiber composite material and the vibration auxiliary mechanism to transmit the vibration of the vibration auxiliary mechanism to the piezoelectric fiber composite material, so that it generates electrical energy.

6. The battery life protection device for a mining micro positioning device according to claim 4, characterized in that: The judgment unit includes an MCU chip and a posture sensor; data is transmitted between the MCU chip and the posture sensor so that the MCU chip can obtain the posture information of the device and make a judgment.

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