CN104835302A - Electric instrument wireless searching system and use method based on Bluetooth technique - Google Patents

Abstract

The present invention relates to a wireless search system for electrical instruments based on bluetooth technology and its use method. Realize connection and communication with mobile phone; Described wireless searching device comprises main control chip, bluetooth, sound alarm circuit, light alarm circuit and power supply, described main control chip is C8051F930 single-chip microcomputer, main control chip, sound alarm circuit, The light alarm circuit is respectively connected to the power supply, the main control chip controls and connects the sound alarm circuit and the light alarm circuit, and the main control chip and the bluetooth perform two-way communication. The invention has the beneficial effects of effectively helping workers to quickly lock the position of the instrument to carry out maintenance work, greatly improving work efficiency and avoiding potential safety hazards caused by omissions.

Description

A wireless search system for electrical instruments based on bluetooth technology and its application method

technical field

The invention relates to a wireless search system for electrical instruments, in particular to a wireless search system for electrical instruments based on bluetooth technology and a method for using it.

Background technique

During the operation of the power system, the electrical instrument is an important technical tool for detecting and controlling the operating parameters of the power grid, and plays an important role in ensuring the safety of the power grid. Therefore, the staff usually need to regularly check and repair the electrical instrument to eliminate faults in time , to ensure its stable operation.

The traditional instrument maintenance work requires the staff to find the instruments distributed in various positions by experience. However, with the development of the smart grid, the use of smart meters is becoming more and more widespread. A large number of meters are required to be distributed in all aspects of the power system to monitor the operation of the power grid, which brings great difficulties to manual maintenance of instruments and meters. It is easy to miss the situation, burying hidden dangers for safe production.

Contents of the invention

The object of the present invention is to provide a wireless search system for electrical instruments based on bluetooth technology and a method for using the above-mentioned defects in the prior art.

The technical solution is: including a wireless search device, an electrical instrument, and a mobile phone, the wireless search device is fixed on the electrical instrument, and the wireless search device is connected and communicated with the mobile phone through Bluetooth;

Described wireless searching device comprises main control chip, bluetooth, sound alarm circuit, light alarm circuit and power supply, and described main control chip is C8051F930 single-chip microcomputer, and main control chip, sound alarm circuit, light alarm circuit are respectively connected to power supply, The main control chip controls and connects the sound alarm circuit and the light alarm circuit, and the main control chip performs two-way communication with Bluetooth.

In the above-mentioned light alarm circuit, the resistor R1 and the LED light are connected in series between the output port P1.0 of the C8051F930 single-chip microcomputer and the power supply. R1 is 300 ohms. When the P1.0 port of the C8051F930 single-chip microcomputer outputs low level On, when the output is high level, the LED light is off, and the timer can be used to control the P1.0 port of the C8051F930 single-chip microcomputer to output high and low level signals with a fixed frequency, so that the LED light will flash and alarm regularly to indicate the specific position of the instrument being searched.

In the above-mentioned sound alarm circuit, a resistor R2, a triode and a buzzer are connected in series between the output port P2.0 of the C8051F930 single-chip microcomputer and the power supply. When the P2.0 port outputs a high level, the triode conducts and the buzzer passes current; when the P2.0 port of the C8051F930 single-chip microcomputer outputs a low level, the triode cuts off and there is no current in the buzzer; when the P2.0 port of the C8051F930 single-chip microcomputer When the .0 port outputs a 2K-5KHz square wave, it can stimulate the buzzer to sound, thereby generating sound alarm signals of different frequencies.

The two ends of the buzzer above are 3V power supply voltage, the positive end of the buzzer is directly connected to the power supply, the negative end of the buzzer is connected to an NPN transistor, and the C8051F930 single-chip microcomputer is used to generate a PWM square wave to control the sound frequency of the buzzer.

A method for using a wireless search system for electrical instruments based on bluetooth technology, comprising the following steps:

A) Open the mobile APP software, first initialize the APP, then turn on the Bluetooth, and face the search device with different Bluetooth names;

B) Use the mobile phone to touch the corresponding instrument that needs to be searched to establish a connection, and you can choose two alarm methods, namely light alarm and sound alarm, and set the light flashing frequency and sound frequency, and then send the alarm command via Bluetooth. In the search device, control the search device to give sound and light alarm, so as to realize the search of the instrument;

C) Through the sinking current of the I/O port of the single-chip microcomputer, the LED light can be effectively lit by connecting a 330Ω resistor R1 in series in the circuit to realize non-disturbance search; a passive buzzer is selected, and the single-chip microcomputer is used to generate a PWM square wave to realize buzzing The control of the sound frequency of the device is used as a supplementary measure when the light alarm fails.

The beneficial effect of the present invention is that it integrates the monitoring of power supply voltage, two-way communication through bluetooth, light and sound alarm control, the mobile phone communicates with the wireless search device bound on the electrical instrument through bluetooth, and drives the specified device to perform non-disturbance Luminous alarm or sound alarm in the case of occlusion can effectively help the staff to quickly lock the position of the instrument to carry out maintenance work, greatly improving work efficiency and avoiding potential safety hazards caused by omissions, small size and simple structure , easy installation, easy operation, low power consumption, low cost and long service life.

Description of drawings

Accompanying drawing 1 is a structural representation of the present invention;

Accompanying drawing 2 is the structural representation of wireless search device;

Accompanying drawing 3 is the structural representation of light alarm circuit;

Accompanying drawing 4 is the structural representation of sound alarm circuit;

In the picture above: wireless search device 1, electrical instrument 2, mobile phone 3, Bluetooth 4, buzzer 5, LED light 6.

Detailed ways

In conjunction with accompanying drawings 1-4, the present invention is further described:

The present invention includes a wireless search device 1, an electrical instrument 2, and a mobile phone 3. The wireless search device 1 is fixed on the electrical instrument 2, and the wireless search device 1 realizes connection and communication with the mobile phone through Bluetooth 4;

The wireless search device 1 includes a main control chip, bluetooth, a sound alarm circuit, a light alarm circuit and a power supply, the main control chip is a C8051F930 single-chip microcomputer, and the main control chip, the sound alarm circuit, and the light alarm circuit are respectively connected to the power supply , the main control chip controls and connects the sound alarm circuit and the light alarm circuit, and the main control chip performs two-way communication with Bluetooth.

Among them, in the light alarm circuit, the resistor R1 and LED light 6 are connected in series between the output port P1.0 of the C8051F930 single-chip microcomputer and the power supply. R1 is 300 ohms. When the P1.0 port of the C8051F930 single-chip microcomputer outputs a low level, the LED light 6 When it is lit, the LED light 6 goes out when the output is high level, and the timer can be used to control the P1. The specific direction is to light the LED lamp 6 through the sink current of the I/O port of the single-chip microcomputer; because the current of the LED lamp 6 generally needs 5-20mA, when the C8051F930 single-chip microcomputer is used to directly drive the LED lamp 6, because of its weak load capacity, The brightness will not meet the requirements, and the forced connection will easily burn out the I/O port. However, the SCM can sink current up to 100mA. When the power supply voltage is 3V, the LED lamp 6 can be effectively lit by connecting a 330Ω resistor in series in the circuit, and it can reduce power consumption compared with the "current-pulling" connection.

Among them, in the sound alarm circuit, a resistor R2, a triode and a buzzer 5 are connected in series between the output port P2.0 of the C8051F930 single-chip microcomputer and the power supply. When the P2.0 port of the C8051F930 MCU outputs a high level, the triode is turned on, and the current passes through the buzzer; when the P2.0 port of the C8051F930 MCU outputs a low level, the triode is cut off, and there is no current in the buzzer; when the C8051F930 MCU When the P2.0 port outputs a 2K-5KHz square wave, it can stimulate the buzzer to sound, thereby generating sound alarm signals of different frequencies.

In addition, the two ends of the buzzer 5 are 3V power supply voltage, the positive end of the buzzer 5 is directly connected to the power supply, the negative end of the buzzer 5 is connected to an NPN transistor, and a C8051F930 single-chip microcomputer is used to generate a PWM square wave to realize the sound of the buzzer 5 frequency control.

A method for using a wireless search system for electrical instruments based on bluetooth technology mentioned in the present invention includes the following steps:

A) Open the mobile APP software, first initialize the APP, then turn on the Bluetooth, and face the search device with different Bluetooth names;

B) Use the mobile phone to touch the corresponding instrument that needs to be searched to establish a connection, and you can choose two alarm methods, namely light alarm and sound alarm, and set the light flashing frequency and sound frequency, and then send the alarm command via Bluetooth. In the search device, control the search device to give sound and light alarm, so as to realize the search of the instrument;

C) Through the current sinking of the I/O port of the single-chip microcomputer, the 330Ω resistor R1 can be connected in series in the circuit to effectively light up the LED light 6 to realize non-disturbance search; use a passive buzzer and use a single-chip microcomputer to generate a PWM square wave to realize the buzzer. The sound frequency control of the buzzer is used as a supplementary measure when the light alarm fails.

Claims (5)

1. A wireless search system for electrical instruments based on Bluetooth technology, which is characterized by: including a wireless search device (1), an electrical instrument (2), a mobile phone (3), and the wireless search device (1) is fixed on the electrical instrument (2) In the above, the wireless search device (1) realizes the connection and communication with the mobile phone through Bluetooth (4); The wireless search device (1) includes a main control chip, bluetooth, sound alarm circuit, light alarm circuit and power supply, the main control chip is a C8051F930 single-chip microcomputer, and the main control chip, sound alarm circuit, and light alarm circuit are respectively connected to Power supply, the main control chip controls and connects the sound alarm circuit and the light alarm circuit, and the main control chip communicates with Bluetooth in a two-way manner. 2. A wireless search system for electrical instruments based on Bluetooth technology according to claim 1, characterized in that: in the light alarm circuit, a resistor R1 is connected in series between the output port P1.0 of the C8051F930 single-chip microcomputer and the power supply , and the LED light (6), the resistance R1 is 330Ω, when the P1.0 port of the C8051F930 single-chip microcomputer outputs a low level, the LED light (6) is lit, and when the output is a high level, the LED light (6) is extinguished. The device can control the P1.0 port of the C8051F930 single-chip microcomputer to output high and low level signals with a fixed frequency, so that the LED light (6) will flash and alarm regularly to indicate the specific position of the instrument being searched. 3. A wireless search system for electrical instruments based on Bluetooth technology according to claim 1, characterized in that: in the sound alarm circuit, a resistor R2 is connected in series between the output port P2.0 of the C8051F930 single-chip microcomputer and the power supply , triode and buzzer (5), when the P2.0 port of the C8051F930 single-chip microcomputer outputs a high level, the triode is turned on, and the current passes through the buzzer (5); when the P2.0 port of the C8051F930 single-chip microcomputer outputs a low power Normally, the triode is cut off, and there is no current in the buzzer (5); when the P2.0 port of the C8051F930 MCU outputs a 2K-5KHz square wave, the buzzer (5) can be stimulated to sound, thereby generating sound alarm signals of different frequencies . 4. A wireless search system for electrical instruments based on Bluetooth technology according to claim 3, characterized in that: the two ends of the buzzer (5) are 3V power supply voltage, the positive end of the buzzer (5) It is directly connected to the power supply, the negative terminal of the buzzer (5) is connected to an NPN transistor, and a C8051F930 single-chip microcomputer is used to generate a PWM square wave to realize the control of the sound frequency of the buzzer (5). 5. A method for using a wireless search system for electrical instruments based on Bluetooth technology according to any one of claims 1-4, characterized in that: comprising the following steps: A) Open the mobile APP software, first initialize the APP, then turn on the Bluetooth, and face the search device with different Bluetooth names; B) Use the mobile phone to touch the corresponding instrument that needs to be searched to establish a connection, and you can choose two alarm methods, namely light alarm and sound alarm, and set the light flashing frequency and sound frequency, and then send the alarm command via Bluetooth. In the search device, control the search device to give sound and light alarm, so as to realize the search of the instrument; C) Through the current sinking of the I/O port of the single-chip microcomputer, the LED light (6) can be effectively lit by connecting the 330Ω resistor R1 in series in the circuit, and realizes non-disturbance search; the passive buzzer (5) is selected and generated by the single-chip microcomputer The PWM square wave realizes the control of the sound frequency of the buzzer (5), which is used as a supplementary measure when the light alarm fails.