CN212459834U - Current collecting equipment - Google Patents

Abstract

The utility model provides a current acquisition equipment, includes a plurality of voltage/current converting circuit, with voltage/current converting circuit equal filter circuit and treater of quantity, voltage/current converting circuit electricity connect filter circuit, the treater is connected to the filter circuit electricity, the treater has the ADC module, communication circuit is connected to the treater electricity. The utility model can collect a plurality of current signals, which is convenient for signal collection; and the device can also communicate with other devices, and is convenient to use.

Description

Current collecting equipment

Technical Field

The utility model relates to a signal acquisition field, especially a current acquisition equipment.

Background

The current acquisition equipment can be used for digitalizing the analog quantity signal and providing the digital quantity signal to an upper computer for analysis and processing; the device can also be used for collecting switching value signals and controlling the output of the switching value after being judged by configuration software; and remote control of remote distributed equipment can be realized, for example, the current acquisition equipment is often applied to occasions such as machine room monitoring, electric power monitoring, industrial automation, environmental protection detection, intelligent home, internet of things and the like. Therefore, the current collecting equipment is favored by more and more people by virtue of multiple advantages of the current collecting equipment.

In industrial control, the current collecting plate is suitable for collecting various current signals and voltage signals, such as temperature, humidity, pressure and the like which are common to people. The power supply state of each module can be monitored in real time through the current acquisition board.

At present, current collection equipment on the market is small as a current data collection card and a current collection unit in small household appliances and large as a current collection module applied to an electric power system.

However, although the current collection devices on the market are various, most of the current collection devices can only collect one current signal, cannot collect a plurality of current signals, and cannot realize communication with other devices.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's not enough, provide one kind can gather and can with the electric current collection equipment of other equipment communication a plurality of electric current signals.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a current acquisition equipment, includes a plurality of voltage/current converting circuit, with voltage/current converting circuit equal filter circuit and treater of quantity, voltage/current converting circuit electricity connect filter circuit, the treater is connected to the filter circuit electricity, the treater has the ADC module, communication circuit is connected to the treater electricity.

Further, there are 16 voltage/current conversion circuits.

Further, the voltage/current conversion circuit comprises a first resistor, two ends of the first resistor are respectively connected with a current positive input terminal and a current negative input terminal, and the current negative input terminal is grounded.

Further, the filter circuit comprises a diode, a polar capacitor, a second resistor and a non-polar capacitor; the positive pole of the diode is connected with the positive pole input terminal of the current, the negative pole of the diode is connected with the positive pole of the polar capacitor, the negative pole of the polar capacitor is grounded, one end of the second resistor is connected with the negative pole of the diode, the other end of the second resistor is connected with the voltage output end and the non-polar capacitor, the non-polar capacitor is grounded, and the voltage output end is connected with the processor.

Further, the communication circuit is an RS485 communication circuit.

Further, the processor is electrically connected with the debugging interface.

Further, the debugging interface is a serial debugging interface.

Further, the processor is a single chip microcomputer.

Further, the model of singlechip is STM32F103RCT 6.

The utility model has the advantages that:

(1) a plurality of current signals can be collected, so that the signal collection is convenient;

(2) can communicate with other devices, and is convenient to use.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a wiring diagram of the single chip microcomputer;

FIG. 3 is a power supply circuit diagram;

FIG. 4 is a circuit diagram of an external crystal oscillator;

FIG. 5 is a circuit diagram of a BOOT1 pin of the single chip microcomputer;

FIG. 6 is an overall diagram of the voltage/current conversion circuit and the filter circuit;

FIG. 7 is a schematic circuit diagram of a voltage/current conversion circuit and a filter circuit;

FIG. 8 is a current input wiring diagram;

FIG. 9 is a circuit diagram of RS485 communication;

FIG. 10 is a circuit diagram of a serial debug interface;

FIG. 11 is a circuit diagram of an I/O interface;

fig. 12 is a circuit diagram of an LED.

In the figure, 1-current positive input terminal, 2-current negative input terminal, 3-voltage output terminal, 11-first resistor, 12-diode, 13-polar capacitor, 14-second resistor, 15-nonpolar capacitor and 16-ground terminal.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic concept of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the form, amount and ratio of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

The first embodiment is as follows:

as shown in fig. 1 to 9, a current collecting apparatus includes 16 voltage/current converting circuits, 16 filter circuits and a processor, wherein the voltage/current converting circuits are electrically connected to the filter circuits, and the filter circuits are electrically connected to the processor.

The processor is an STM32F103RCT6 singlechip.

The voltage/current conversion circuit comprises a first resistor 11, wherein two ends of the first resistor 11 are respectively connected with a current positive input terminal 1 and a current negative input terminal 2, and the current negative input terminal 2 is connected with a ground terminal 16.

The voltage/current conversion circuit can also be completed by adopting the voltage/current conversion chip.

The filter circuit comprises a diode 12, a polar capacitor 13, a second resistor 14 and a non-polar capacitor 15; the positive pole of the diode 12 is connected with the current positive pole input terminal 1, the negative pole of the diode 12 is connected with the positive pole of the polar capacitor 13, the negative pole of the polar capacitor 13 is connected with the grounding terminal 16, one end of the second resistor 14 is connected with the negative pole of the diode 12, the other end of the second resistor is connected with the voltage output terminal 3 and the non-polar capacitor 15, the non-polar capacitor 15 is connected with the grounding terminal 16, and the voltage output terminal 3 is connected with the processor.

The filter circuit may also be implemented using a filter chip, such as LMF 100.

The processor is electrically connected to the communication circuit. The communication circuit is an RS485 communication circuit.

The working principle is as follows:

current acquisition equipment passes through external current sensor, the current signal that will gather flows in voltage/current converting circuit through positive input terminal 1 of electric current and electric current negative pole input terminal 2, convert voltage signal (because the singlechip can only discern voltage signal) into through first resistance 11, voltage signal filters the back through filter circuit, flow in STM32F103RCT6 singlechip, STM32F103RCT6 singlechip can realize 16 AD conversions, the singlechip carries out AD conversion to 16 voltages of input, the singlechip can obtain actual current value through the conversion.

By adopting RS485 communication, the current acquisition equipment can communicate with the central control panel, the measured current value is sent to the central control panel in real time, and the control signal of the central control panel is received, so that the central control panel can control the current acquisition equipment, and whether the current value is sent or not, whether a certain path of current signal is detected or not and the like are realized.

Example two:

as shown in fig. 1 to 10, the second embodiment has all the technical features of the first embodiment, and the differences are as follows:

the communication circuit can also adopt a wireless communication circuit, so that the current acquisition equipment can be conveniently remotely communicated, and the control room can receive current acquisition data in a wireless communication mode.

The processor is electrically connected with the debugging interface. The debugging interface is a serial debugging interface.

And a Serial Wire Debug (Serial Wire Debug) interface is adopted, so that an engineer can conveniently Debug the current acquisition equipment, and the use is convenient.

Example three:

as shown in fig. 1 to 12, the third embodiment has all the technical features of the second embodiment, and the differences are as follows:

the processor being connected to an I/O interface, e.g. SPI, I²C、I²And S, and the like, can realize data exchange between the processor and other equipment.

The processor is connected with the LED lamp, and functions such as alarm and the like can be realized by controlling the state of the LED lamp.

The BOOT circuit is connected to pins BOOT0 and BOOT1, and three BOOT modes can be set through the two pins, namely BOOT from a user flash memory (which is a normal operating mode), BOOT from a system memory (program functions of BOOT in the mode are set by a manufacturer), and BOOT from a built-in SRAM (the mode can be used for debugging).

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims (9)

1. A current collection device, characterized by: the voltage/current conversion circuit is electrically connected with the filter circuit, the filter circuit is electrically connected with the processor, the processor is provided with an ADC module, and the processor is electrically connected with the communication circuit.

2. A current collection device according to claim 1, wherein: there are 16 voltage/current conversion circuits.

3. A current collection device according to claim 1, wherein: the voltage/current conversion circuit comprises a first resistor, wherein two ends of the first resistor are respectively connected with a current positive input terminal and a current negative input terminal, and the current negative input terminal is grounded.

4. A current collection device according to claim 1, wherein: the filter circuit comprises a diode, a polar capacitor, a second resistor and a non-polar capacitor; the positive pole of the diode is connected with the positive pole input terminal of the current, the negative pole of the diode is connected with the positive pole of the polar capacitor, the negative pole of the polar capacitor is grounded, one end of the second resistor is connected with the negative pole of the diode, the other end of the second resistor is connected with the voltage output end and the non-polar capacitor, the non-polar capacitor is grounded, and the voltage output end is connected with the processor.

5. A current collection device according to claim 1, wherein: the communication circuit is an RS485 communication circuit.

6. A current collection device according to claim 1, wherein: the processor is electrically connected with the debugging interface.

7. A current collection device according to claim 6, wherein: the debugging interface is a serial debugging interface.

8. A current collection device according to claim 1, wherein: the processor is a single chip microcomputer.

9. A current collection device according to claim 8, wherein: the model of the single chip microcomputer is STM32F103RCT 6.

Images