CN202586286U

CN202586286U - Motor protection and monitoring system

Info

Publication number: CN202586286U
Application number: CN 201220192568
Authority: CN
Inventors: 张敏; 王培良
Original assignee: Huzhou University
Current assignee: Huzhou University
Priority date: 2012-05-02
Filing date: 2012-05-02
Publication date: 2012-12-05
Anticipated expiration: 2022-05-02

Abstract

The utility model discloses a motor protection and monitoring system, and relates to the technical field of motors. The protection and monitoring of the temperature and the current of a motor are realized through a 5V switch power supply circuit, a temperature acquisition circuit, a current detection circuit and a single chip microcomputer system circuit. When an excessive temperature condition or an excessive current condition exists on the motor, the current and the temperature of the motor will be detected by the single chip microcomputer system and displayed on a 1602 liquid crystal display, and an alarm will be generated at the same time. The temperature and the current of the motor in the working process of the motor are transmitted to a master display through a wireless transceiver module to realize real-time monitoring so as to monitor the working condition of the motor remotely. Operating values of the motor can be monitored on a real time basis, and when the operating values of the motor are in abnormal conditions, adjustment control can be performed on the motor timely to prevent the influence on related operations caused by the failure of the motor. One master single chip microcomputer can be connected with multiple slave single chip microcomputers for monitoring multiple motors, so the timely stop of motors on the job site in an excessive temperature condition or in an excessive current condition is ensured, so that damage to the motors is avoided.

Description

The motor protection supervisory control system

Technical field:

The utility model relates to the motor technology field, more specifically to a kind of electronic protection and supervising device.

Background technology:

The motor intelligent monitoring protective device is a kind of Artificial Intelligence Instrument that improves motor security of operation and automatic management level.The conventional electric-powered wisdom can protect supervising device just can after motor breaks down, in time close motor and warning; And can't realize real-time monitoring; When motor operation numerical value begins to take place undesired variation; The running status that can't detect motor is also in time adjusted accordingly, and motor is run well.

The utility model content:

The purpose of the utility model is exactly the deficiency to prior art; And a kind of motor protection supervisory control system is provided; It can monitor the operation numerical value of motor in real time; When motor operation numerical value takes place can in time advance adjustment control to motor when unusual, prevent that motor from breaking down and influence relevant operation.

The technological solution of the utility model is following:

The motor protection supervisory control system; Comprise power circuit; Power circuit provides 5 couchers to make voltage to whole system; Temperature and current setting value when key circuit is given the work of slave single-chip microcomputer input motor; First reset circuit input reset signal resets for the slave single-chip microcomputer via motor-drive circuit control motor, first crystal oscillating circuit is to single-chip microcomputer input crystal oscillator signal, and temperature and current signal during the work of temperature current Acquisition Circuit sampling motor flow to the slave single-chip microcomputer; Temperature and current value when the slave single-chip microcomputer shows motor work with this temperature and the current signal display screen through first display circuit; This temperature and current signal pass to host SCM through first radio receiving transmitting module and second radio receiving transmitting module, and on the display screen of second display circuit that the main frame monolithic is controlled, show temperature and current value when motor is worked, and host SCM sends command signal and gives the slave unit via second radio receiving transmitting module and first radio receiving transmitting module; The slave unit quits work via motor-drive circuit control motor according to the command signal of host SCM, and first display circuit is identical with the structure of second display circuit;

Be electrically connected with second reset circuit and second crystal oscillating circuit on the host SCM; The reset signal of second reset circuit flows to the main frame monolithic and sends to the slave single-chip microcomputer via second radio receiving transmitting module and first radio receiving transmitting module, and the slave single-chip microcomputer resets via motor-drive circuit control motor according to the reset signal of second reset circuit;

The temperature current Acquisition Circuit is made up of temperature collection circuit and current acquisition circuit, and the current acquisition circuit has passed through with motor in series a precision resistance, and its resistance is 0.1 ohm, is used for gathering the electric current through motor.

Be electrically connected with sound light alarming circuit on the said slave single-chip microcomputer; When temperature the when temperature during the motor work that is sampled to when the temperature current Acquisition Circuit and current value are given the motor work of slave single-chip microcomputer input greater than key circuit and current setting value, the sound light alarming circuit warning.

Said motor-drive circuit adopts the L819 chip controls, is used for the running of drive motor.

The beneficial effect of the utility model is:

1, it can monitor the operation numerical value of motor in real time, when motor operation numerical value takes place can in time advance adjustment control to motor when unusual, prevents that motor from breaking down and influence relevant operation.

2, its host SCM can connect a plurality of slave single-chip microcomputers multiple motors is monitored, thus the motor that guarantees the working site in time shut down during too high or overcurrent in temperature, in order to avoid motor damages.

3, when motor temperature during too high or overcurrent, sound light alarming circuit can in time be reported to the police, and reminds the staff in time motor to be quit work, thus the protection motor.

Description of drawings:

Fig. 1 is the circuit frame principle figure of the utility model

Fig. 2 is the circuit diagram of slave single-chip microcomputer

Fig. 3 is the circuit diagram of host SCM

Fig. 4 is the circuit diagram of motor-drive circuit

Fig. 5 is the circuit diagram of temperature collection circuit

Fig. 6 is the circuit diagram of first display circuit

Fig. 7 is the circuit diagram of sound light alarming circuit

Fig. 8 is the circuit diagram of the first wireless data sending circuit

Embodiment:

Embodiment: see shown in Fig. 1 to 8; The motor protection supervisory control system; Comprise power circuit 1; Power circuit 1 provides 5 couchers to make voltage to whole system; Temperature and current setting value when key circuit 4 is given slave single-chip microcomputer J1 input motor M work; First reset circuit, 3 input reset signals reset for slave single-chip microcomputer J1 via motor-drive circuit 7 control motor M, first crystal oscillating circuit 2 is given single-chip microcomputer J1 input crystal oscillator signal, and temperature and current signal during the 5 sampling motor M work of temperature current Acquisition Circuit flow to slave single-chip microcomputer J1; Temperature and current value when slave single-chip microcomputer J1 shows motor M work with this temperature and the current signal display screen through first display circuit 6; This temperature and current signal pass to host SCM J2 through first radio receiving transmitting module 9 and second radio receiving transmitting module 10, and on the display screen of second display circuit 13 that main frame monolithic J2 controls, show temperature and current value when motor M works, and host SCM J2 sends command signal and gives slave unit J1 via second radio receiving transmitting module 10 and first radio receiving transmitting module 9; Slave unit J1 quits work via motor-drive circuit 7 control motor M according to the command signal of host SCM J2, and first display circuit 6 is identical with the structure of second display circuit 13;

Be electrically connected with second reset circuit 11 and second crystal oscillating circuit 12 on the host SCM J2; The reset signal of second reset circuit 11 flows to main frame monolithic J2 and sends to slave single-chip microcomputer J1 via second radio receiving transmitting module 10 and first radio receiving transmitting module 9, and slave single-chip microcomputer J1 resets via motor-drive circuit 7 control motor M according to the reset signal of second reset circuit 11;

Temperature current Acquisition Circuit 5 is made up of temperature collection circuit and current acquisition circuit, and the current acquisition circuit is through the precision resistance R5 that connected with motor M, and its resistance is 0.1 ohm, is used for gathering the electric current through motor M.

Be electrically connected with sound light alarming circuit 8 on the said slave single-chip microcomputer J1; When temperature the when temperature during the motor M work that is sampled to when temperature current Acquisition Circuit 5 and current value are given the motor M work of slave single-chip microcomputer J1 input greater than key circuit 4 and current setting value, sound light alarming circuit 8 warnings.

Said motor-drive circuit 7 adopts L819 chip S1 control, is used for the running of drive motor.

Second radio receiving transmitting module 10 and first radio receiving transmitting module 9 are all selected NRF24L01 modular type monolithic radio frequency transceiver for use.

Operation principle: mainly realize monitoring and protection to motor temperature and electric current through 5V switching power circuit, temperature collection circuit, current detection circuit and microcontroller system circuit.When too high or electric current was excessive when motor temperature, SCM system will detect its electric current and temperature, and is shown on 1602 LCDs, can send warning simultaneously.Temperature during motor work and electric current are transferred to through wireless data transfer module and realize monitoring in real time on the host display, the work of remote monitoring motor.

Claims

1. motor protection supervisory control system; Comprise power circuit (1); It is characterized in that: power circuit (1) provides 5 couchers to make voltage to whole system; Temperature and current setting value when key circuit (4) is given slave single-chip microcomputer (J1) input motor (M) work; First reset circuit (3) input reset signal resets for slave single-chip microcomputer (J1) via motor-drive circuit (7) control motor (M); First crystal oscillating circuit (2) is given single-chip microcomputer (J1) input crystal oscillator signal; Temperature and current signal during temperature current Acquisition Circuit (5) sampling motor (M) work flow to slave single-chip microcomputer (J1); Temperature and current value when slave single-chip microcomputer (J1) shows motor (M) work with this temperature and the current signal display screen through first display circuit (6); This temperature and current signal pass to host SCM (J2) through first radio receiving transmitting module (9) and second radio receiving transmitting module (10), and on the display screen of second display circuit (13) that main frame monolithic (J2) is controlled, show temperature and current value when motor (M) is worked, and host SCM (J2) sends command signal and gives slave unit (J1) via second radio receiving transmitting module (10) and first radio receiving transmitting module (9); Slave unit (J1) quits work via motor-drive circuit (7) control motor (M) according to the command signal of host SCM (J2), and first display circuit (6) is identical with the structure of second display circuit (13);

Be electrically connected with second reset circuit (11) and second crystal oscillating circuit (12) on the host SCM (J2); The reset signal of second reset circuit (11) flows to main frame monolithic (J2) and sends to slave single-chip microcomputer (J1) via second radio receiving transmitting module (10) and first radio receiving transmitting module (9), and slave single-chip microcomputer (J1) resets via motor-drive circuit (7) control motor (M) according to the reset signal of second reset circuit (11);

Temperature current Acquisition Circuit (5) is made up of temperature collection circuit and current acquisition circuit, and the current acquisition circuit is through the precision resistance (R5) of having connected with motor (M), and its resistance is 0.1 ohm, is used for gathering the electric current through motor (M).

2. motor protection supervisory control system according to claim 1; It is characterized in that: be electrically connected with sound light alarming circuit (8) on the slave single-chip microcomputer (J1); When temperature the when temperature during motor (M) work that is sampled to when temperature current Acquisition Circuit (5) and current value are given motor (M) work of slave single-chip microcomputer (J1) input greater than key circuit (4) and current setting value, sound light alarming circuit (8) warning.

3. motor protection supervisory control system according to claim 1 is characterized in that: motor-drive circuit (7) adopts L819 chip (S1) control, is used for the running of drive motor.