CN209963817U - Combined sensor with self-powered function for monitoring vibrating screen - Google Patents
Combined sensor with self-powered function for monitoring vibrating screen Download PDFInfo
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- CN209963817U CN209963817U CN201920609323.9U CN201920609323U CN209963817U CN 209963817 U CN209963817 U CN 209963817U CN 201920609323 U CN201920609323 U CN 201920609323U CN 209963817 U CN209963817 U CN 209963817U
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Abstract
The utility model discloses a combination formula sensor is used in shale shaker control with from power supply function, including microcontroller to and acceleration detection circuitry, the infrared temperature measurement circuit that is connected with it, based on the radio frequency circuit of zigBee technique, still include one and convert electromagnetic energy into self-power supply circuit of electric energy, self-power supply circuit includes current transformer, electromagnetic energy acquisition circuit, charge control integrated circuit and rechargeable battery, electromagnetic energy acquisition circuit gather by the electric energy of current transformer induction conversion, the electric energy of charge control integrated circuit management conversion gives rechargeable battery charges, rechargeable battery is used for giving microcontroller, acceleration detection circuitry, infrared temperature measurement circuit, radio frequency circuit power supply. The utility model discloses but direct mount can turn into the electric energy with electromagnetic energy and come the power supply to realize vibrating sensor networking output on 380V 220V AC cable, can be used to a plurality of aspects such as the temperature of shale shaker and vibration detection and warning.
Description
Technical Field
The utility model relates to a monitoring sensor technical field especially relates to an infrared temperature measurement and vibration combination formula sensor.
Background
Coal is an important energy source, coal is sorted, mineral impurities in raw coal are removed, the raw coal is divided into products with different specifications, the value of the coal is played sufficiently, and in recent years, Chinese coal washing plants have been developed greatly in the aspects of industry scale, operation service, technical equipment, enterprise departure and the like, and become an important means for promoting urban economic development. The high-quality development of a coal washing plant is promoted, the stability and the reliability of each process link are ensured firstly, the vibrating screen is used as key equipment of a coal washing process, the performance and the reliability are very important, and therefore an intelligent temperature and vibration combined sensor is needed to monitor the running state of the vibrating screen in real time, the continuous tracking and feedback of the vibration condition of the vibrating screen are needed, the damage state of customer equipment is informed in advance, spare parts are prepared, and the unplanned shutdown of the equipment is avoided.
For example, as disclosed in chinese patent CN201811063747.6, the current sensors are generally powered by batteries, which not only consume a large amount of power, but also cause some environmental pollution. Most importantly, the use is inconvenient, the batteries need to be replaced timely, and the problem is solved if the environment is not easy to replace the batteries. When the battery power is not enough, things which need to be handled in time often happen, and because the equipment power is not enough, the things can not be handled in time, and the loss is large.
Chinese patent CN201811619670.6 proposes a sensor for monitoring the temperature of a rotating body, in which the power supply module includes three power supply modes, i.e., button battery power supply, wireless charging, or conversion of the rotation motion of the sensor into electric energy. The three modes have the technical problems or have complicated structures, so that the three modes are not easy to popularize.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an infrared temperature measurement and vibration combination formula sensor with self-powered function for the state control of shale shaker.
For solving above technical problem, the technical scheme of the utility model for adopt a combination formula sensor is used in shale shaker control with self-powered function, including microcontroller to and acceleration detection circuitry, infrared temperature measurement circuit that are connected with it, the radio frequency circuit based on zigBee technique, a serial communication port, still include one and convert electromagnetic energy into the self-power circuit of electric energy, self-power circuit includes current transformer, electromagnetic energy acquisition circuit, charge control integrated circuit and rechargeable battery, electromagnetic energy acquisition circuit gather by the electric energy of current transformer induction conversion, the electric energy of charge control integrated circuit management conversion gives rechargeable battery charges, rechargeable battery is used for giving microcontroller, acceleration detection circuitry, infrared temperature measurement circuit, radio frequency circuit power supply.
Preferably, the current transformer is mounted on the alternating current cable to obtain the electric energy on the alternating current cable through the electromagnetic induction principle.
Preferably, the electromagnetic energy collecting circuit comprises a bridge rectifier circuit and a filter circuit which are arranged at the front end of the circuit, and two input ends of the bridge rectifier circuit are respectively connected with two electrode wires of a secondary winding of the current transformer.
Preferably, a relay switch is connected between two electrode wires of the current transformer, the microcontroller sends a switch control signal to the relay switch through a comparator, a first input end of the comparator is the voltage value of the rechargeable battery, and a second input end of the comparator is a fixed voltage value.
Preferably, the electromagnetic energy collecting circuit includes an energy storage capacitor and a backflow prevention diode connected in series with the energy storage capacitor.
Preferably, a charging control integrated circuit with a voltage stabilizing function is connected between the energy storage capacitor and the rechargeable battery, filter capacitors are arranged at the input end and the output end of the charging control integrated circuit, and self-excitation preventing capacitors are connected in parallel with the filter capacitors.
Preferably, the CE pin of the charging control integrated circuit is connected to the microcontroller, and when the CE pin is at a high voltage, the microcontroller sends a signal to control the BAT pin of the charging control integrated circuit to output a current to the rechargeable battery; when the CE pin is low voltage, the microcontroller sends a signal to control the BAT pin of the charging control integrated circuit to stop outputting current to the rechargeable battery.
Preferably, the EN1 and EN2 pins of the charge control integrated circuit are connected to the microcontroller to control the charging current.
Preferably, the TMR pin of the charging control integrated circuit is connected to the first resistor and then grounded, and the ISET pin is connected to the second resistor and then grounded, so as to adjust the time ratio of the two modes of pre-charging and fast-charging and adjust the fast-charging current level.
Preferably, a third resistor and a light emitting diode are connected between the OUT pin and the CHG pin of the charge control integrated circuit.
The beneficial effects of the utility model are mainly embodied in that:
1. the vibrating screen can be directly arranged on a 380V/220V alternating current cable, can convert electromagnetic energy into electric energy to supply power to realize networking output of the vibrating sensor, and can be used for temperature and vibration detection, alarm and other aspects of a vibrating screen;
2. the utility model makes the conversion and collection of electromagnetic energy easier for the brand new world of the self-powered circuit;
3. the utility model discloses a self-power supply circuit has two kinds of functions of precharge and quick charge simultaneously.
Drawings
Fig. 1 is a schematic diagram of a self-powered control circuit of the combined sensor of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described in detail with reference to the specific embodiments.
The utility model discloses an infrared temperature measurement and vibration combination sensor with self-powered function based on zigBee technique, including microcontroller to and acceleration detection circuitry, infrared temperature measurement circuit, the radio frequency circuit based on zigBee technique that are connected with it, and pilot lamp circuit and SW interface circuit. The microcontroller has a data processing circuit with a low-power consumption automatic sleep function. The data processing circuit processes data from the acceleration detection circuit and the infrared temperature measurement circuit, transmits the data to the outside through the radio frequency circuit, gives an alarm to the outside through the indicator light circuit, and updates an external program through the SW interface circuit. The radio frequency circuit is externally connected with a 2.4G radio frequency antenna. The microcontroller is connected with a ZigBee wireless transceiver, such as STM32LXXX of ST company. The STM32LXXX is based on an ARM Cortex-M432 bit RISC core of a high-performance ultra-low power consumption microcontroller, the working frequency is as high as 80MHz, a 1MB flash memory and a 128KB SRAM memory can be set to be in working states of dormancy, low power consumption and the like. The acceleration detection circuit is used for collecting, filtering and digitizing an acceleration signal, and adopts ADXL3XX of ADI company. The acceleration sensor can detect the acceleration of +/-40G in the 3-axis direction, has the sensitivity of 78ug/LSB, and has the functions of low-pass filtering and the like.
The utility model discloses a characteristics lie in still including one and convert electromagnetic energy into self-power circuit of electric energy, self-power circuit includes current transformer T1, electromagnetic energy acquisition circuit, charge control integrated circuit U1 and rechargeable battery B, electromagnetic energy acquisition circuit gather by the electric energy of current transformer induction conversion, the electric energy of charge control integrated circuit management conversion gives rechargeable battery charges, rechargeable battery is used for giving microcontroller, acceleration detection circuitry, infrared temperature measurement circuit, radio frequency circuit power supply provide required 3.3V voltage in the whole circuit.
As shown in fig. 1, the current transformer T1 is mounted on an ac cable to obtain electric energy on the ac cable through the principle of electromagnetic induction. The current mutual inductance electricity taking device is a novel power supply device which obtains electric energy by utilizing the electromagnetic induction principle and realizes stable voltage output. The current mutual inductance electricity taking device has the characteristics of small volume, low cost, stability, convenience in installation and the like, and has important production and application values.
The electromagnetic energy acquisition circuit is connected with the current transformer and used for storing electric energy converted by the current transformer after rectification, and comprises a bridge rectifier circuit D1 and a filter circuit which are arranged at the front end of the circuit, wherein two input ends of the bridge rectifier circuit D1 are respectively connected with two electrode leads of a secondary winding of the current transformer.
A relay switch S1 is connected between two electrode wires of the current transformer, the microcontroller U2 sends a switch control signal to the relay switch through a comparator P1, the first input end of the comparator is the voltage value of the rechargeable battery, and the second input end of the comparator is a fixed voltage value. The specific working process is described in detail later.
The electromagnetic energy collecting circuit comprises an energy storage capacitor and a backflow prevention diode which is connected in series with the energy storage capacitor. In fig. 1, an inductor L1 and a capacitor C1 form the filter circuit, D2 is a backflow prevention diode, and C0 is a capacitor for energy storage.
And a charging control integrated circuit with a voltage stabilizing function is connected between the energy storage capacitor and the rechargeable battery, filter capacitors are arranged at the input end and the output end of the charging control integrated circuit, and self-excitation preventing capacitors are connected in parallel with the filter capacitors. Wherein, C2 and C4 in FIG. 1 are filter capacitors, and C3 and C5 are self-excitation preventing capacitors.
The current transformer T1 is installed on a 380V/220V alternating current cable, electric energy on the alternating current cable is obtained through the electromagnetic induction principle, the input Vin of the electromagnetic energy acquisition circuit is supplied, the Vin is an alternating current source and is converted into a direct current source through a full-bridge rectifier circuit D1, current passes through the anti-backflow diode D2 and then charges the energy storage capacitor C0, a direct current voltage which is not very stable is formed continuously in the energy storage capacitor C0, the direct current voltage generates a direct current voltage with high precision and good stability at the input end of the rechargeable battery B after passing through the voltage stabilization and current stabilization of the charging control integrated circuit U1 and the filtering of the filter capacitor C4, and the technical problem of unstable current is solved.
The CE pin of the charging control integrated circuit is connected with the microcontroller, and when the CE pin is high voltage, the microcontroller sends a signal to control the BAT pin of the charging control integrated circuit to output current to the rechargeable battery; when the CE pin is low voltage, the microcontroller sends a signal to control the BAT pin of the charging control integrated circuit to stop outputting current to the rechargeable battery. The specific operation process is as follows: the wide-range unstable direct-current voltage enters through an IN interface of a charging control integrated circuit U1, and the 4.2V direct-current voltage with high precision and good stability is output through a BAT interface to charge the rechargeable battery. The comparator P1 works, when the voltage of the rechargeable battery is less than the reference voltage 3.7V, the microcontroller U2 opens the relay switch S1 to charge the energy storage capacitor C0, and then pulls up the CE pin of the charging control integrated circuit U1 to control the charging of the rechargeable battery; when the voltage of the rechargeable battery is greater than the reference voltage 4.2V, the microcontroller U2 sends a signal to close the relay switch S1, the secondary side output of the current transformer T1 is short-circuited, the power supply to the energy storage capacitor C0 is stopped, and meanwhile, the CE pin of the charging control integrated circuit U1 is pulled down, and the rechargeable battery is stopped being charged.
The utility model discloses in, charge control integrated circuit's EN1 and EN2 pin with microcontroller U2 is connected, controls charging current. The microcontroller U2 receives the data from the EN1 and EN2 pins, and controls the magnitude of the charging current output from the BAT pin, for example:
the utility model discloses a self-power supply circuit has two kinds of functions of precharge and quick charge simultaneously, because directly fill soon can influence rechargeable battery's life-span. The TMR pin of the charging control integrated circuit is connected with the first resistor R1 and then grounded, and the ISET pin is connected with the second resistor R2 and then grounded, so that the time proportion of the two modes of pre-charging and quick-charging is adjusted. For example: the precharge time Tp is R2 × 48s/k Ω; the fast charging time Tm is 10 × R2 × 48s/k Ω. At the same time, the fast charging current level can also be adjusted by the second resistor R2, for example: the charging current Iset is 890A Ω/R2.
A third resistor R3 and a light emitting diode D3 are connected between the OUT pin and the CHG pin of the charging control integrated circuit, the light emitting diode D3 is used as a charging indication, the light is on to indicate that charging is in progress, and the light is off to indicate that charging is finished.
The utility model utilizes the current transformer to obtain the electric energy on the cable by the electromagnetic induction principle; and then the electromagnetic energy acquisition circuit is connected with the current transformer, the acquired energy passes through the charging control integrated circuit, the rechargeable battery is charged by using the electric energy converted by the current transformer, and the electric energy is converted into 3.3V by voltage stabilization and then is connected to the data processing circuit, the acceleration detection circuit and the infrared temperature measurement circuit.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the spirit and scope of the invention, and such modifications and enhancements are intended to be within the scope of the invention.
Claims (10)
1. The utility model provides a shale shaker is combination formula sensor for control with from power supply function, includes microcontroller to and the acceleration detection circuitry that is connected with it, infrared temperature measurement circuit, radio frequency circuit based on zigBee technique, its characterized in that still includes one and converts electromagnetic energy into electric power from power supply circuit, from power supply circuit including current transformer, electromagnetic energy acquisition circuit, charge control integrated circuit and rechargeable battery, electromagnetic energy acquisition circuit gather by the electric energy of current transformer induction conversion, the electric energy of charge control integrated circuit management conversion gives rechargeable battery charges, rechargeable battery is used for giving microcontroller, acceleration detection circuit, infrared temperature measurement circuit, radio frequency circuit power supply.
2. The modular sensor for monitoring of a vibrating screen with self-powered function as claimed in claim 1, wherein said current transformer is mounted on an ac cable to obtain electric energy on the ac cable by the principle of electromagnetic induction.
3. The combined sensor with self-powered function for monitoring the vibrating screen as claimed in claim 1, wherein the electromagnetic energy collecting circuit comprises a bridge rectifier circuit and a filter circuit which are arranged at the front end of the circuit, and two input ends of the bridge rectifier circuit are respectively connected with two electrode wires of the secondary winding of the current transformer.
4. The combination sensor with self-powered function for monitoring vibrating screen of claim 3, wherein a relay switch is connected between two electrode wires of said current transformer, said microcontroller sends a switch control signal to said relay switch through a comparator, a first input end of said comparator is a voltage value of said rechargeable battery, a second input end of said comparator is a fixed voltage value.
5. The modular sensor for monitoring a vibrating screen with self-powered capability of claim 1 wherein said electromagnetic energy harvesting circuit includes an energy storage capacitor in series with a back-flow prevention diode.
6. The combined sensor with self-powered function for monitoring the vibrating screen as claimed in any one of claims 1 to 5, wherein a charging control integrated circuit with voltage stabilizing function is connected between the energy storage capacitor and the rechargeable battery, and the input end and the output end of the charging control integrated circuit are both provided with filter capacitors, and the filter capacitors are both connected in parallel with self-excitation preventing capacitors.
7. The combination sensor with self-powered functionality for monitoring a vibrating screen as claimed in claim 6, wherein the CE pin of the charging control IC is connected to the microcontroller, and when the CE pin is at a high voltage, the microcontroller sends a signal to control the BAT pin of the charging control IC to output current to the rechargeable battery; when the CE pin is low voltage, the microcontroller sends a signal to control the BAT pin of the charging control integrated circuit to stop outputting current to the rechargeable battery.
8. The combination sensor for monitoring a vibrating screen with self-powered functionality according to claim 6, wherein pins EN1 and EN2 of said charge control integrated circuit are connected to said microcontroller to control the charging current.
9. The combined sensor with self-powered function for monitoring a vibrating screen of claim 6, wherein the TMR pin of the charging control integrated circuit is connected to the first resistor and then grounded, and the ISET pin is connected to the second resistor and then grounded, so as to adjust the time ratio of the two modes of pre-charging and fast-charging and adjust the fast-charging current level.
10. The combined sensor with self-powered function for monitoring of vibrating screen of claim 6, wherein a third resistor and a light emitting diode are connected between the OUT pin and the CHG pin of the charging control integrated circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920609323.9U CN209963817U (en) | 2019-04-29 | 2019-04-29 | Combined sensor with self-powered function for monitoring vibrating screen |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920609323.9U CN209963817U (en) | 2019-04-29 | 2019-04-29 | Combined sensor with self-powered function for monitoring vibrating screen |
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| CN209963817U true CN209963817U (en) | 2020-01-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212622A (en) * | 2019-04-29 | 2019-09-06 | 苏州捷杰传感技术有限公司 | Vibrating screen monitoring combined sensor with self-powered function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110212622A (en) * | 2019-04-29 | 2019-09-06 | 苏州捷杰传感技术有限公司 | Vibrating screen monitoring combined sensor with self-powered function |
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