Personnel positioning system based on wireless bluetooth sensor on mine hydraulic support and implementation method thereof

Abstract

The present application belongs to the technical field of personnel positioning, and provides a personnel positioning system based on wireless Bluetooth sensors on mine hydraulic supports and an implementation method thereof. The personnel positioning system comprises: wireless Bluetooth sensors arranged on the mine hydraulic supports and used as wireless positioning beacons; wireless Bluetooth receivers arranged on the mine hydraulic supports, used for transmitting and receiving sensor data, and performing data interaction with support controllers, and used as wireless positioning beacons; and Bluetooth positioning tags worn on the personnel, used as positioned devices, and used for determining the support number where the positioning tag is located according to the signal strength of the Bluetooth beacon perceived by the Bluetooth positioning tag. Thus, low-cost personnel positioning on a coal mining face is realized.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of personnel positioning, in particular, relates to a personnel positioning system based on wireless Bluetooth sensors on mine hydraulic supports and an implementation method thereof. BACKGROUND

[0002] The safety of personnel on a coal mining face is an important link in coal mining operations, and how to ensure the safety of personnel has been an important safety issue in the field. In field operations, realizing personnel positioning on a coal mining face is an important prerequisite for ensuring the safety of personnel on a coal mining face. Existing personnel positioning technology for fully mechanized coal mining faces is based on UWB, which has a high cost. On the other hand, sensors need to be installed on hydraulic supports on a coal mining face so that a fully mechanized intelligent system can obtain various data of the hydraulic supports (for example, column pressure, inclination of various parts of the support, etc.). In combination with the above two points, the present inventor has found that if personnel positioning can be realized based on wireless Bluetooth sensors on hydraulic supports on a coal mining face, low-cost personnel positioning on a coal mining face can be realized. SUMMARY

[0003] The present application aims to provide a personnel positioning system based on wireless Bluetooth sensors on mine hydraulic supports to realize personnel positioning based on wireless Bluetooth sensors on mine hydraulic supports, so as to solve the technical problems existing in the prior art.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows:

[0005] The personnel positioning system based on wireless Bluetooth sensors on mine hydraulic supports comprises: a wireless Bluetooth sensor arranged on a mine hydraulic support and used as a wireless positioning beacon; a wireless Bluetooth receiver arranged on the mine hydraulic support, used for transmitting and receiving sensor data, and performing data interaction with a support controller, and used as a wireless positioning beacon; and a Bluetooth positioning tag worn on a person's body and used as a positioned device, and the number of the support where the positioning tag is located is determined according to the signal strength of the Bluetooth beacon perceived by the Bluetooth positioning tag.

[0006] Further, the wireless Bluetooth sensor comprises a wireless Bluetooth inclination sensor, a wireless Bluetooth pressure sensor and / or a wireless Bluetooth distance measuring sensor.

[0007] In a preferred embodiment, the Bluetooth positioning tag comprises a chip U2, pins 7 and 8 of which are connected to a crystal Yl, pin 9 to a capacitor C12, pin 10 to a capacitor C9, pin 12 to a capacitor C8, pin 14 to a capacitor C7, pin 21 to a resistor R3, pin 22 to a chip Ql, pin 24 to a capacitor C13, pin 28 to a resistor R2, pin 29 to a resistor Rl, pins 31 and 32 to a crystal Y2, pins 11, 13 and 33 of the chip U2 are connected to ground;

[0008] One end of the capacitor C9 is connected to ground, the other end to a capacitor C10, one end of the capacitor C10 is connected to ground, the other end to one end of a capacitor Cll, the other end of the capacitor Cll is connected to VCC, one end of the capacitor C8 is connected to ground, the other end to one end of a capacitor C4, the other end of the capacitor C4 is connected to one end of a capacitor C2, the other end of the capacitor C2 is connected to ground, one end of the capacitor C2 is connected to one end of a capacitor C3, the other end of the capacitor C3 is connected to ground, one end of the capacitor C3 is connected to a capacitor Cl, one end of the capacitor C7 is connected to ground, the other end to a capacitor C6, one end of the capacitor C6 is connected to ground, the other end to a capacitor C5, the capacitor C5 is connected to VCC, one end of the resistors R3, R2 and Rl is connected to VCC, one end of the capacitor C13 is connected to ground.

[0009] In a preferred embodiment, the wireless Bluetooth receiver comprises a chip U21 and a chip U22, pins 7 and 8 of the chip U21 are connected to a crystal X22, pin 9 to a capacitor C23, pin 10 to a capacitor C25, pin 12 to a capacitor C29, pin 14 to a capacitor C215, pin 16 to pin 1 of the chip U22, pin 17 to a resistor R212, pin 22 to a chip U23, pin 24 to one end of a capacitor C212 and a capacitor C213 connected in parallel, pins 25 and 26 to 3.3 V, pin 27 to one end of a capacitor C22 and a capacitor C21 connected in parallel, pin 28 to a resistor R216, pin 29 to a resistor R215, pin 30 to one end of a resistor R27, pins 31 and 32 to a crystal X21, pins 11, 13 and 33 to ground;

[0010] Pin 1 of the chip U22 is connected to a resistor R24, pins 2 and 3 to a resistor R26 and the collector of a transistor Q21, pin 6 to a resistor R210, pin 7 to a resistor R25, pin 8 to 3.3 V, pins 4 and 5 to ground; one end of the resistors R24 and R26 is connected to 3.3 V, the emitter of the transistor Q21 is connected to ground, the base to a resistor R211, one end of the resistors R211 and R29 is connected to pin 15 of the chip U21, the other end of the resistor R29 is connected to 3.3 V, resistors R25 and R210 are connected in parallel with a resistor R28 and a diode TVSDl between them;

[0011] One end of the capacitor C25 is connected to the capacitor C24, the other end is connected to the ground, one end of the capacitor C24 is connected to the inductor L21, the other end is connected to the ground, one end of the inductor L21 is connected to 3.3V, one end of the capacitor C29 is connected to the inductor L22, the other end is connected to the ground, one end of the inductor L22 is connected to the capacitor C28, one end of the capacitor C28 is connected to the capacitor C220, the other end is connected to the ground, one end of the capacitor C220 is connected to the inductor L210, the other end is connected to the ground, one end of the inductor L210 is connected to the resistor R220, the other end of the resistor R220 is connected to the ground, one end of the capacitor C215 is connected to the capacitor C214, the other end is connected to the ground, one end of the capacitor C214 is connected to the inductor L23, the other end is connected to the ground, one end of the inductor L23 is connected to 3.3V, one end of the resistor R212 is connected to one end of the light emitting diode H2, the other end of the light emitting diode H2 is connected to 3.3V, the other end of the capacitor C212 and the capacitor C213 is connected to the ground, the other end of the capacitor C22 and the capacitor C21 is connected to 3.3V, the other end of the resistor R27 is connected to one end of the light emitting diode H1, the other end of the light emitting diode H1 is connected to 3.3V.

[0012] In order to achieve the above-mentioned purpose, the application further provides an implementation method of the personnel positioning system based on the wireless Bluetooth sensor on the mine hydraulic support, which is characterized by comprising the following steps:

[0013] Step S1: the wireless positioning beacon broadcasts the main information through the Bluetooth network; wherein the main information comprises the support number, the installation position and the signal strength;

[0014] Step S2: the Bluetooth positioning label obtains the main information broadcasted by the surrounding wireless positioning beacon through the Bluetooth network;

[0015] Step S3: according to the obtained main information, all the hydraulic supports with complete wireless positioning beacons are screened out;

[0016] Step S4: the signal strengths of all the wireless positioning beacons on each hydraulic support are summed up to obtain the signal strength sum;

[0017] Step S5: the hydraulic support with the maximum signal strength sum is taken as the positioning support, and it is determined that the Bluetooth positioning label is located in the positioning support.

[0018] Further, the wireless positioning beacon comprises the wireless Bluetooth sensor and the wireless Bluetooth receiver installed on the hydraulic support.

[0019] Further, the judgment method of the hydraulic support with complete wireless positioning beacons in step S3 is as follows: if the number of the wireless positioning beacons installed on the hydraulic support is N, and the support numbers of N wireless positioning beacons in the obtained main information of the wireless positioning beacon are the same, it is determined that the hydraulic support has complete wireless positioning beacons, wherein N≥2.

[0020] Further, the signal strength is filtered before being summed.

[0021] Compared with the prior art, the present application has the following advantages:

[0022] The present application is based on the wireless Bluetooth sensor and the wireless Bluetooth receiver installed on the mine hydraulic support, the field personnel wears the Bluetooth positioning tag which can be paired and interacted with the wireless Bluetooth sensor and the wireless Bluetooth receiver, wherein the wireless Bluetooth sensor and the wireless Bluetooth receiver are used as the wireless positioning beacon, the Bluetooth positioning tag is used as the positioned device, the relative position of the Bluetooth positioning tag and the wireless positioning beacon is determined according to the Bluetooth signal strength of the wireless positioning beacon, thereby realizing the low-cost personnel positioning of the coal mining face, and effectively solving the problems in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a principle block diagram of the system disclosed in the present application - embodiment 1.

[0024] Figure 2 It is a circuit principle diagram of the wireless Bluetooth pressure sensor in the present application - embodiment 1.

[0025] Figure 3 It is a circuit principle diagram of the wireless Bluetooth inclination sensor in the present application - embodiment 1, part 1.

[0026] Figure 4 It is a circuit principle diagram of the wireless Bluetooth inclination sensor in the present application - embodiment 1, part 2.

[0027] Figure 5 It is a circuit principle diagram of the wireless Bluetooth receiver in the present application - embodiment 1, part 1.

[0028] Figure 6 It is a circuit principle diagram of the wireless Bluetooth receiver in the present application - embodiment 1, part 2.

[0029] Figure 7 It is a circuit principle diagram of the wireless Bluetooth receiver in the present application - embodiment 1, part 3.

[0030] Figure 8 It is a circuit principle diagram of the wireless Bluetooth receiver in the present application - embodiment 1, part 4.

[0031] Figure 9 It is a flow chart of the method disclosed in the present application - embodiment 2. DETAILED DESCRIPTION

[0032] To enable those skilled in the art to have a clearer understanding of the present invention, the present invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described below are merely for illustrative purposes and to facilitate understanding. The technical solutions provided by the present invention are not limited to those provided in the following embodiments, nor should they limit the scope of protection of the present invention.

[0033] Example 1

[0034] like Figures 1-8 As shown, this embodiment provides a personnel positioning system based on a wireless Bluetooth sensor on a mining hydraulic support. The design principle of this positioning system is based on the wireless Bluetooth sensor installed on the mining hydraulic support, combined with a wireless Bluetooth receiver and a Bluetooth positioning tag. According to the signal strength of the Bluetooth beacon sensed by the Bluetooth positioning tag, the support number where the positioning tag is located is determined by the signal strength comparison method.

[0035] In this embodiment, the personnel positioning system based on the wireless Bluetooth sensor on the mining hydraulic support includes: a wireless Bluetooth sensor, installed on the mining hydraulic support, used as a wireless positioning beacon; a wireless Bluetooth receiver, installed on the mining hydraulic support, used for transmitting and receiving sensor data and interacting with the support controller, also used as a wireless positioning beacon; and a Bluetooth positioning tag, worn on the personnel, used as the positioned device, and the support number where the positioning tag is located is determined based on the signal strength of the Bluetooth beacon sensed by the Bluetooth positioning tag.

[0036] The wireless Bluetooth sensor includes a wireless Bluetooth tilt sensor, a wireless Bluetooth pressure sensor, and / or a wireless Bluetooth distance measuring sensor. According to the actual working condition, those skilled in the art can select the appropriate wireless Bluetooth sensor. The wireless Bluetooth sensor is a conventional sensor, for example, a wireless Bluetooth tilt sensor, whose circuit principle is as follows: including chip U11 and chip U12, the model of chip U11 is EFR32BG21A010F1024IM32-B, the model of chip U12 is KX023-1025, the pin 7 and pin 8 of chip U11 are connected with crystal oscillator X2, the pin 9 is connected with capacitor C13, the pin 10 is connected with capacitor C15, the pin 12 is connected with capacitor C19, the pin 14 is connected with capacitor C115, the pin 15 is connected with pin 4 of chip U12, the pin 16 is connected with pin 6 of chip U2, the pin 22 is connected with chip U13 (model TMR1304 TO-92), the pin 24 is connected with one end of capacitor C112 and capacitor C113 connected in parallel, the pin 25 and pin 26 are connected with 3V3, the pin 27 is connected with one end of capacitor C11 and capacitor C12 connected in parallel, the pin 30 is connected with pin 11 of chip U12, the pin 31 and pin 32 are connected with crystal oscillator X1, the pin 11, pin 13 and pin 33 are connected with ground; the pin 1 and pin 14 of chip U2 are connected with 3V3, the pin 4 is connected with resistor R13, the pin 6 is connected with resistor R15, the pin 5, pin 7 and pin 12 are connected with ground; one end of capacitor C13 is connected with ground, one end of capacitor C15 is connected with capacitor C14, the other end is connected with ground, one end of capacitor C14 is connected with inductor L1, the other end is connected with ground, one end of inductor L1 is connected with 3V3, one end of capacitor C19 is connected with inductor L2, the other end is connected with ground, one end of inductor L2 is connected with capacitor C18, one end of capacitor C18 is connected with capacitor C181, the other end is connected with ground, one end of capacitor C181 is connected with inductor L12, the other end is connected with ground, one end of inductor L12 is connected with resistor R110, the other end of resistor R110 is connected with ground, one end of capacitor C115 is connected with capacitor C114, the other end is connected with ground, one end of capacitor C114 is connected with inductor L3, the other end is connected with ground, one end of inductor L3 is connected with 3V3, the other end of capacitor C112 and capacitor C113 is connected with ground, the other end of capacitor C11 and capacitor C12 is connected with ground, one end of resistor R13 and resistor R15 is connected with 3V3, the other end of inductor L12 is connected with plug spring J1; wherein, the crystal oscillator X1 adopts a patch passive crystal oscillator T139C patch 2-pin 3.2*1.6mm, the crystal oscillator X2 adopts a 201638.4MHZ 38.400MHZ 38.4M TCXO temperature compensation patch crystal oscillator active OSC EPSON. The wireless Bluetooth pressure sensor, the wireless Bluetooth distance measuring sensor, etc. are also conventional sensors, and their circuit principles are not described again.

[0037] The Bluetooth positioning tag is worn on the body of the staff and is used as a positioned device, and its circuit principle is as follows: including a chip U2, the model of the chip U2 is EFR32BG21A010F1024IM32-B, the pin 7 and the pin 8 of the chip U2 are connected with a crystal oscillator Y1, the pin 9 is connected with a capacitor C12, the pin 10 is connected with a capacitor C9, the pin 12 is connected with a capacitor C8, the pin 14 is connected with a capacitor C7, the pin 21 is connected with a resistor R3, the pin 22 is connected with a chip Q1 (the model is TMR1304 TO-92), the pin 24 is connected with a capacitor C13, the pin 28 is connected with a resistor R2, the pin 29 is connected with a resistor R1, the pin 31 and the pin 32 are connected with a crystal oscillator Y2, the pin 11, the pin 13 and the pin 33 of the chip U2 are connected with the ground; one end of the capacitor C9 is connected with the ground, and the other end is connected with a capacitor C10, one end of the capacitor C10 is connected with the ground, and the other end is connected with one end of a capacitor C11, the other end of the capacitor C11 is connected with VCC, one end of the capacitor C8 is connected with the ground, and the other end is connected with one end of a capacitor C4, the other end of the capacitor C4 is connected with one end of a capacitor C2, the other end of the capacitor C2 is connected with the ground, one end of the capacitor C2 is connected with one end of a capacitor C3, the other end of the capacitor C3 is connected with the ground, one end of the capacitor C3 is connected with a capacitor C1, the other end of the capacitor C1 is connected with a plug spring J1, one end of the capacitor C7 is connected with the ground, and the other end is connected with a capacitor C6, one end of the capacitor C6 is connected with the ground, and the other end is connected with a capacitor C5, the capacitor C5 is connected with VCC, one end of the resistors R3, R2 and R1 is connected with VCC, and one end of the capacitor C13 is connected with the ground; wherein the crystal oscillator Y1 adopts a patch passive crystal oscillator T139C patch 2 pins 3.2*1.6mm, the crystal oscillator Y2 adopts a 2016 38.4MHZ 38.400MHZ 38.4M TCXO temperature compensation patch crystal oscillator active OSCEPSON, the resistors R1, R2 and R3 are patch resistors, the specification model is 10K 5%0603 103, and the capacitor adopts a patch capacitor, and the specification model is shown in the following table:

[0038] 1 UF 50V 0603 C13 2.2 PF 50V 0603 C3 2.2 UF 50V 0603 C14 3.3 PF 50V 0603 C2 C8 10 NF 50V 0603 C15 10 PF 50V 0603 C7 C9 10 UF 50V 0603 C5 C11 22 UF 50V 0603 C1 C4 56 NF 50V 0603 C6 C10 100 NF 50V 0603 C12 C16

[0039] The wireless Bluetooth receiver is installed on the mine hydraulic support and is used as a wireless positioning beacon in the positioning system, and the wireless Bluetooth receiver includes a chip U21 and a chip U22 in the embodiment, wherein the model of the chip 21 is

[0040] EFR32BG21A010F1024IM32-B, the model of the chip U22 is SP3485EN-L / TR, the pin 7 and the pin 8 of the chip U21 are connected with the crystal oscillator X22, the pin 9 is connected with the capacitor C23, the pin 10 is connected with the capacitor C25, the pin 12 is connected with the capacitor C29, the pin 14 is connected with the capacitor C215, the pin 16 is connected with the pin 1 of the chip U22, the pin 17 is connected with the resistor R212, the pin 22 is connected with the chip U23, the pin 24 is connected with one end of the capacitor C212 and the capacitor C213 in parallel, the pin 25 and the pin 26 are connected with 3.3V, the pin 27 is connected with one end of the capacitor C22 and the capacitor C21 in parallel, the pin 28 is connected with the resistor R216, the pin 29 is connected with the resistor R215, the pin 30 is connected with one end of the resistor R27, the pin 31 and the pin 32 are connected with the crystal oscillator X21, the pin 11, the pin 13 and the pin 33 are connected with the ground; the pin 1 of the chip U22 is connected with the resistor R24, the pin 2 and the pin 3 are connected with the resistor R26 and the collector of the triode Q21, the pin 6 is connected with the resistor R210, the pin 7 is connected with the resistor R25, the pin 8 is connected with 3.3V, the pin 4 and the pin 5 are connected with the ground; one end of the resistor R24 and the resistor R26 is connected with 3.3V, the emitter of the triode Q21 is connected with the ground, the base is connected with the resistor R211, one end of the resistor R211 and the resistor R29 is connected with the pin 15 of the chip U21, the other end of the resistor R29 is connected with 3.3V, the resistor R25 and the resistor R210 are connected with the resistor R28 and the diode TVSD1 in parallel; one end of the capacitor C25 is connected with the capacitor C24, the other end is connected with the ground, one end of the capacitor C24 is connected with the inductor L21, the other end is connected with the ground, one end of the inductor L21 is connected with 3.3V, one end of the capacitor C29 is connected with the inductor L22, the other end is connected with the ground, one end of the inductor L22 is connected with the capacitor C28, one end of the capacitor C28 is connected with the capacitor C220, the other end is connected with the ground, one end of the capacitor C220 is connected with the inductor L210, the other end is connected with the ground, one end of the inductor L210 is connected with the resistor R220, the other end of the resistor R220 is connected with the ground, one end of the capacitor C215 is connected with the capacitor C214, the other end is connected with the ground, one end of the capacitor C214 is connected with the inductor L23, the other end is connected with the ground, one end of the inductor L23 is connected with 3.3V, one end of the resistor R212 is connected with one end of the light emitting diode H2, the other end of the light emitting diode H2 is connected with 3.3V, the other end of the capacitor C212 and the capacitor C213 is connected with the ground, the other end of the capacitor C22 and the capacitor C21 is connected with 3.3V, the other end of the resistor R27 is connected with one end of the light emitting diode H1, the other end of the light emitting diode H1 is connected with 3.3V, the specifications and models of the various devices in the circuit are shown in the following table (the left side is the specification and model, and the right side is the device bit number):

[0041]

[0042]

[0043]

[0044] Based on the above disclosed positioning system, the working principle is as follows: the Bluetooth positioning tag obtains the basic information (for example: the bracket number where the Bluetooth device is located, the installation position, and the signal strength) of the surrounding Bluetooth signal source (wireless Bluetooth receiver / wireless Bluetooth sensor) through its own Bluetooth function, filters out the bracket with complete signal source quantity (for example, if 5 Bluetooth signal sources are installed on each bracket, and 5 bracket numbers are detected at the same time, it is judged that the signal source quantity on the bracket is complete), and then filters and processes the signal strength of multiple signal sources on the bracket filtered out (for example: filtering and smoothing the signal strength collected continuously within 2 seconds), sums up the signal strength, takes the bracket with the maximum signal strength, and determines that the positioning tag is located in this bracket.

[0045] Embodiment 2

[0046] As shown in Figure 9 The embodiment provides an implementation method of the personnel positioning system based on wireless Bluetooth sensors on a mine hydraulic support as described in Embodiment 1, which comprises the following steps:

[0047] Step S1: the wireless positioning beacon broadcasts the main information through the Bluetooth network; wherein the main information includes the bracket number, the installation position, and the signal strength; wherein the wireless positioning beacon includes the wireless Bluetooth sensor and the wireless Bluetooth receiver installed on the hydraulic support.

[0048] Step S2: the Bluetooth positioning tag obtains the main information broadcast by the surrounding wireless positioning beacon through the Bluetooth network.

[0049] Step S3: according to the obtained main information, all hydraulic supports with complete wireless positioning beacons are filtered out; wherein the judgment method of the hydraulic support with complete wireless positioning beacons is as follows: if the number of wireless positioning beacons installed on the hydraulic support is N, and the bracket numbers of N wireless positioning beacons in the obtained wireless positioning beacon main information are the same, it is judged that the hydraulic support has complete wireless positioning beacons, wherein N≥2.

[0050] Step S4: the signal strengths of all wireless positioning beacons on each hydraulic support are summed up to obtain the signal strength sum. As an optimization, before summing up the signal strengths, the signal strengths are also filtered and processed.

[0051] Step S5: the hydraulic support with the maximum signal strength sum is taken as the positioning bracket, and it is determined that the Bluetooth positioning tag is located in the positioning bracket.

[0052] The above embodiments are only illustrative of the principles of the present application and its efficacy, and are not intended to limit the present application. Any modification or change made by any person skilled in the art without departing from the spirit and scope of the present application shall be covered by the claims of the present application.

Claims

1. A personnel positioning system based on a wireless Bluetooth sensor on a mining hydraulic support, characterized in that, include: A wireless Bluetooth sensor is installed on a mining hydraulic support and used as a wireless positioning beacon. A wireless Bluetooth receiver, mounted on a mining hydraulic support, is used for transmitting and receiving sensor data and interacting with the support controller, serving as a wireless positioning beacon. A Bluetooth positioning tag, worn by personnel, is used as a located device, and the support number where the tag is located is determined based on the signal strength of the Bluetooth beacon it senses. The Bluetooth positioning tag is configured as follows: The system obtains the main information broadcast by the wireless positioning beacons in its vicinity via Bluetooth network. The main information includes the bracket number, installation location, and signal strength. Based on the obtained main information, all hydraulic supports with complete wireless positioning beacons are screened out. The method for determining whether a hydraulic support has complete wireless positioning beacons is as follows: if the number of wireless positioning beacons installed on the hydraulic support is N, then there are N supports with the same wireless positioning beacon number in the obtained wireless positioning beacon main information, and N≥2. The signal strengths of all wireless positioning beacons on each hydraulic support are filtered and summed to obtain the signal strength sum. The hydraulic support with the strongest signal strength is selected as the positioning support, and the Bluetooth positioning tag is determined to be located within the positioning support.

2. The personnel positioning system based on a wireless Bluetooth sensor on a mining hydraulic support according to claim 1, characterized in that, The wireless Bluetooth sensor includes a wireless Bluetooth tilt sensor, a wireless Bluetooth pressure sensor, and / or a wireless Bluetooth ranging sensor.

3. The personnel positioning system based on a wireless Bluetooth sensor on a mining hydraulic support according to claim 2, characterized in that: The Bluetooth positioning tag includes a chip U2. Pins 7 and 8 of the chip U2 are connected to crystal oscillator Y1, pin 9 is connected to capacitor C12, pin 10 is connected to capacitor C9, pin 12 is connected to capacitor C8, pin 14 is connected to capacitor C7, pin 21 is connected to resistor R3, pin 22 is connected to chip Q1, pin 24 is connected to capacitor C13, pin 28 is connected to resistor R2, pin 29 is connected to resistor R1, pins 31 and 32 are connected to crystal oscillator Y2, and pins 11, 13 and 33 of the chip U2 are grounded. One end of capacitor C9 is grounded and the other end is connected to capacitor C10. One end of capacitor C10 is grounded and the other end is connected to one end of capacitor C11. The other end of capacitor C11 is connected to VCC. One end of capacitor C8 is grounded and the other end is connected to one end of capacitor C4. The other end of capacitor C4 is connected to one end of capacitor C2. The other end of capacitor C2 is grounded. One end of capacitor C2 is connected to one end of capacitor C3. The other end of capacitor C3 is grounded. One end of capacitor C3 is connected to capacitor C1. One end of capacitor C7 is grounded and the other end is connected to capacitor C6. One end of capacitor C6 is grounded and the other end is connected to capacitor C5. Capacitor C5 is connected to VCC. One end of resistors R3, R2, and R1 is connected to VCC. One end of capacitor C13 is grounded.

4. The personnel positioning system based on a wireless Bluetooth sensor on a mining hydraulic support according to claim 3, characterized in that: The wireless Bluetooth receiver includes chip U21 and chip U22. Pins 7 and 8 of chip U21 are connected to crystal oscillator X22, pin 9 is connected to capacitor C23, pin 10 is connected to capacitor C25, pin 12 is connected to capacitor C29, pin 14 is connected to capacitor C215, pin 16 is connected to pin 1 of chip U22, pin 17 is connected to resistor R212, pin 22 is connected to chip U23, pin 24 is connected to one end of capacitors C212 and C213 in parallel, pins 25 and 26 are connected to 3.3V, pin 27 is connected to one end of capacitors C22 and C21 in parallel, pin 28 is connected to resistor R216, pin 29 is connected to resistor R215, pin 30 is connected to one end of resistor R27, pins 31 and 32 are connected to crystal oscillator X21, and pins 11, 13 and 33 are grounded. Pin 1 of chip U22 is connected to resistor R24; pins 2 and 3 are connected to resistor R26 and the collector of transistor Q21; pin 6 is connected to resistor R210; pin 7 is connected to resistor R25; pin 8 is connected to 3.3V; pins 4 and 5 are grounded; one end of resistors R24 and R26 is connected to 3.3V; the emitter of transistor Q21 is grounded; the base is connected to resistor R211; one end of resistors R211 and R29 is connected to pin 15 of chip U21; the other end of resistor R29 is connected to 3.3V; resistor R28 and diode TVSD1 are connected in parallel between resistors R25 and R210. One end of capacitor C25 is connected to capacitor C24, and the other end is grounded. One end of capacitor C24 is connected to inductor L21, and the other end is grounded. One end of inductor L21 is connected to 3.3V. One end of capacitor C29 is connected to inductor L22, and the other end is grounded. One end of inductor L22 is connected to capacitor C28. One end of capacitor C28 is connected to capacitor C220, and the other end is grounded. One end of capacitor C220 is connected to inductor L210, and the other end is grounded. One end of inductor L210 is connected to resistor R220, and the other end of resistor R220 is grounded. Capacitor C2... One end of resistor R15 is connected to capacitor C214, and the other end is grounded. One end of capacitor C214 is connected to inductor L23, and the other end is grounded. One end of inductor L23 is connected to 3.3V. One end of resistor R212 is connected to one end of LED H2, and the other end of LED H2 is connected to 3.3V. The other ends of capacitors C212 and C213 are grounded. The other ends of capacitors C22 and C21 are connected to 3.3V. The other end of resistor R27 is connected to one end of LED H1, and the other end of LED H1 is connected to 3.3V.

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