CN207232246U - Multi-functional integrated type intelligent network detector - Google Patents

Abstract

The utility model discloses a kind of multi-functional integrated type intelligent network detector, the multi-functional integrated type intelligent network detector includes current acquisition module, voltage acquisition module, central processing module, communication module and display module, the central processing module passes through circuit and the voltage acquisition module, the current acquisition module, the communication module, the display module connection, the central processing module includes microcontroller and external circuit, the current acquisition module includes current conversion unit, the voltage acquisition module includes voltage conversion unit, the current conversion unit and the voltage conversion unit will be uploaded to the microcontroller after the circuit data conversion process collected by the external circuit；The utility model realizes the mutual operation of various programs by the central processing module, realizes the conversion of a variety of instrument measurement data.

Description

Multi-functional integrated type intelligent network detector

Technical field

It the utility model is related to power generation or field of power distribution, and in particular to a kind of multi-functional integrated type intelligent network detector.

Background technology

With the progress of society, Improving The Quality of Products, reducing production cost becomes important goal.Present In production line, more using single-phase electricity flow table, three-phase electricity flow table, single-phase voltage table, three-phase voltage meter, frequency meter, power meter, The multiple products such as multifunctional meter carry out the detection of electricity consumption data in production process, but these products are all independent progress data mostly Detection and display, can not realize the conversion of a variety of instrument measurement data, cause the increase of cost and the reduction of production efficiency.

In view of drawbacks described above, the utility model creator obtains this practicality newly finally by prolonged research and practice Type.

Utility model content

To solve above-mentioned technological deficiency, the technical solution adopted in the utility model is, there is provided a kind of multi-functional integrated type Intelligent network detector, the multi-functional integrated type intelligent network detector include current acquisition module, voltage acquisition module, in Entreat processing module, communication module and display module, the central processing module passes through circuit and the voltage acquisition module, described Current acquisition module, the communication module, display module connection, the central processing module include microcontroller and external electrical Road, the current acquisition module include current conversion unit, and the voltage acquisition module includes voltage conversion unit, the electric current Converting unit and the voltage conversion unit will be uploaded to after the circuit data conversion process collected by the external circuit The microcontroller.

Preferably, the current acquisition module further includes current collection circuit, it is mutual that the current collection circuit includes electric current Sensor, circuit protecting element, translated resistance, current-limiting resistance, filter capacitor, the current transformer pass through conducting wire and the electric current Converting unit connects, and the current transformer, the circuit protecting element, the translated resistance and the filter capacitor are in parallel, The current-limiting resistance is arranged between the translated resistance and the filter capacitor.

Preferably, the translated resistance includes the first translated resistance and the second translated resistance, first translated resistance and It is connected between second translated resistance by conducting wire with the current conversion unit.

Preferably, the filter capacitor includes the first filter capacitor and the second filter capacitor, first filter capacitor and Pass through wired earth between second filter capacitor.

Preferably, the current-limiting resistance includes the first current-limiting resistance and the second current-limiting resistance, first current-limiting resistance and Second current-limiting resistance is arranged between the translated resistance and the filter capacitor.

Preferably, the communication module includes communicating circuit and data-interface, the communicating circuit include process chip and Circuit is connected, the process chip is connected by the connection circuit with the data-interface, the microcontroller.

Preferably, the connection circuit includes the first optocoupler, the second optocoupler, the 3rd optocoupler, the process chip includes connecing Receive device and transmitter, the output terminal of the receiver are connected by first optocoupler with the microcontroller, the transmitter Input terminal is connected by second optocoupler with the microcontroller, and the Enable Pin of the receiver and the transmitter passes through described 3rd optocoupler is connected with the microcontroller.

Preferably, the current conversion unit and the voltage conversion unit are preferably arranged to power measurement chip.

Preferably, the process chip is preferably arranged to MAX486 chips.

The beneficial effects of the utility model are compared with the prior art：1, realized by the central processing module various The mutual operation of program, realizes the conversion of a variety of instrument measurement data；2, the Multifunctional centralized is realized by the communication module The remote monitoring of accepted way of doing sth intelligent network detector；3, pass through the current acquisition module and the voltage acquisition module, realization pair The collection conversion of electric current and voltage data in detection circuit, is that the subsequent treatment of the central processing module carries out the early period of data Prepare.

Brief description of the drawings

Fig. 1 is the structure chart of the utility model multi-functional integrated type intelligent network detector；

Fig. 2 is the communication module circuit diagram of the utility model multi-functional integrated type intelligent network detector；

Fig. 3 is the current acquisition module circuit diagram of the utility model multi-functional integrated type intelligent network detector.

Digital representation in figure：

1- current acquisition modules；2- voltage acquisition modules；3- central processing modules；4- communication modules；5- display modules； 11- Current Mutual Inductances；12- circuit protecting elements；16- power measurement chips；41- process chips；The first optocouplers of 42-；The second light of 43- Coupling；The 3rd optocouplers of 44-；45- pull-up resistors；46- pull down resistors；The first thermistors of 47-；The second thermistors of 48-；49- bis- Pole pipe；The first translated resistances of 131-；The second translated resistances of 132-；The first current-limiting resistances of 141-；The second current-limiting resistances of 142-；151- First filter capacitor；The second filter capacitors of 152-；411- limited capacitances.

Embodiment

Below in conjunction with attached drawing, and other technical characteristic above-mentioned to the utility model and advantage are described in more detail.

Embodiment one

It is shown in Figure 1, Fig. 1 be the utility model multi-functional integrated type intelligent network detector structure chart, this reality Include current acquisition module 1, voltage acquisition module 2, central processing module with novel and multifunctional integrated-type intelligent network detecting instrument 3rd, communication module 4 and display module 5.The central processing module 3 passes through circuit and the voltage acquisition module 2, the electric current Acquisition module 1, the communication module 4, the display module 5 connect.The voltage acquisition module 2 passes through the electricity to monitoring unit Pressure data are acquired and carry out conversion process to collected voltage data by voltage conversion unit and be uploaded to described Central processing unit 3, the current acquisition module 1 is by being acquired the current data of monitoring unit and being changed by electric current Unit carries out collected current data conversion process and is uploaded to the central processing unit 3, and the communication module 4 is used In industrial personal computer is upper or touch-screen and subordinate equipment between establish master ＆ slave control, the central processing unit 3 includes Microcontroller and external circuit, the central processing unit 3 are used to handle the voltage data, the current data and user From the director data of the communication module 4 input, and the data for handling completion are uploaded to the display module 5 and are shown.

Embodiment two

As shown in Fig. 2, Fig. 2 is the circuit diagram of the communication module 4, the communication module includes communicating circuit and data connect Mouthful, the data-interface preferably uses UART interface, and the data-interface is used to handle the data for receiving and sending, Such as：Add parity checking position, start bit, stop bits etc.；The signal that the communicating circuit is used to send the data-interface turns The level of electrical characteristic is changed to, the signal received is converted to from circuit criteria the standardized digital signal of 0~5V.

The communicating circuit includes process chip 41, and the process chip 41 is preferably arranged to MAX486 chips, the place Reason chip 41 is used for realization the conversion between the level of bus electrical characteristic and the standardized digital signal of 0~5V, the processing core The inside of piece 41 sets receiver and transmitter, the receiver to include input terminal and output terminal, the input of the receiver End (A, B end) is connected with the bus, and receives the level signal of the bus transfer, and the receiver output terminal (RX) passes through First optocoupler 42 is connected with the RXD pins of the microcontroller of the central processing unit 3；The transmitter is connect by TX pins It is sent to after receiving the data transmitted by the microcontroller by the input terminal (A, B end) in the bus, TX is the transmission Device input terminal, is connected by the second optocoupler 43 with the TXD pins of the microcontroller, RE and TE pins be respectively the receiver, The Enable Pin of the transmitter.Since MAX485 chips are half-duplex work, therefore RE and TE can pass through one of the microcontroller I/O mouthfuls of controls, are connected after RE and TE connections by the 3rd optocoupler 44 with the EN pins of the microcontroller, when the receiver inputs When holding (A, B) open circuit or bus floating (in bus All Drives output be high resistant), if receiver output low level, if UART (UART Universal Asynchronous Receiver Transmitter), which may think that, to be communication frame " starting " and causes work abnormal, overcomes the method for this problem When at A ends, pull-up resistor 45 is set, pull down resistor 46 is set at B ends, so as to ensure A, B open circuit or during floating, output is in true Determine state (output high level), ensure that A, B line the situation of mess code will not occur because level difference is too small in communication process.

Each series connection the first thermistor 47 and the second thermistor 48 on VA and VB, avoid bus occur surge impact, The potential hazard such as power cord and the bus short circuit, lightning stroke, sets diode 49 to stablize the voltage in the bus, plays voltage stabilizing Effect.

In some industrial control fields, there is very high common mode electricity since field condition is sufficiently complex, between each node Pressure, although the when difference transmission mode that circuit interface uses, has certain ability resistant to common code interference, when common-mode voltage surpasses The limit receiving voltage of oversampling circuit receiver, that is, be more than+12V or during less than -7V, and receiver just can not again work normally, Chip and instrument and equipment can be even burnt when serious.By setting limited capacitance 411 by system power supply and RS-485 transceivers Isolated from power, by isolating device by signal isolation, thoroughly eliminates the influence of common-mode voltage.By setting limited capacitance 411, cause It is the power supply of two groups of portions altogether to make VCC and VDD, realizes system power supply and the isolated from power of circuit transceiver；Isolated by galvanic couple To realize that the isolation of signal is transmitted, the process chip 41 and communicating circuit not altogether, cause signal and power supply it is complete every From effectively inhibiting the generation of high common-mode voltage, greatly reduce the spoilage of the communication module, improve the communication The stability of module.

Embodiment three

As shown in figure 3, Fig. 3 is the circuit diagram of the current acquisition module 1, it is some right that the current acquisition module 1 includes The current collection circuit and power measurement chip 16 that electric current is sampled, the current collection circuit include current transformer 11st, circuit protecting element 12, translated resistance, current-limiting resistance, filter capacitor.The current transformer 11 passes through conducting wire and the work( Rate computation chip 16 connects, the current transformer 11, the circuit protecting element 12, the translated resistance and the filtered electrical Hold parallel connection, the current-limiting resistance is arranged between the translated resistance and the filter capacitor；The translated resistance includes first 131 and second translated resistance 132 of translated resistance, passes through between first translated resistance 131 and second translated resistance 132 Conducting wire is connected with the power measurement chip 16, and the filter capacitor includes the first filter capacitor 151 and the second filter capacitor 152, pass through wired earth between first filter capacitor 151 and second filter capacitor 152；The current-limiting resistance includes First current-limiting resistance 141 and the second current-limiting resistance 142, first current-limiting resistance 141 and second current-limiting resistance 142 are set Between the translated resistance and the filter capacitor.

The current transformer 11 forms alternating message source, the power measurement chip by sensing the electric current of detection circuit 16 pass through the voltage signal with alternating message source described in the direct Series detectors of the current transformer 11；The alternating message source Reference voltage signal is converted into by the translated resistance and is transmitted to the power measurement chip 16 and is analyzed, described will be turned Change double resistance modes that resistance is arranged to first translated resistance 131 and second translated resistance 132 so that the reference Voltage signal is divided into positive part and negative part, easy to the analyzing and processing in 16 later stage of power measurement chip；The current limliting electricity Resistance and the filter capacitor coordinate the filtering that positive and negative both direction is carried out to the current collection circuit.The circuit protecting element 12 are preferably arranged to protection TVS, and the circuit protecting element 12 is used to prevent the current collection circuit from overloading, avoids burning out institute Current collection circuit is stated, while the current signal of relatively high power can be detected；Pass through difference amplifier current loop, the work( Rate computation chip 16 carries out analog-to-digital conversion process to the reference voltage signal and the voltage signal and draws modulus measurements, institute Power measurement chip 16 is stated to being integrated with the periodic modulus measurements, so as to calculate corresponding electric current Value.

The above is only the preferred embodiment of the present invention, is merely illustrative for the utility model, and It is nonrestrictive.Those skilled in the art understanding, can be to it in the spirit and scope that the utility model claims are limited Many changes are carried out, are changed, in addition it is equivalent, but fall within the scope of protection of the utility model.

Claims (9)

1. a kind of multi-functional integrated type intelligent network detector, it is characterised in that including current acquisition module, voltage acquisition mould Block, central processing module, communication module and display module, the central processing module pass through circuit and the voltage acquisition mould Block, the current acquisition module, the communication module, display module connection, the central processing module include microcontroller And external circuit, the current acquisition module include current conversion unit, the voltage acquisition module includes voltage conversion unit, The current conversion unit and the voltage conversion unit by after the circuit data conversion process collected by the external electrical Road is uploaded to the microcontroller.

2. multi-functional integrated type intelligent network detector as claimed in claim 1, it is characterised in that the current acquisition module Current collection circuit is further included, the current collection circuit includes current transformer, circuit protecting element, translated resistance, current limliting Resistance, filter capacitor, the current transformer are connected by conducting wire with the current conversion unit, the current transformer, institute It is in parallel to state circuit protecting element, the translated resistance and the filter capacitor, the current-limiting resistance is arranged on the translated resistance Between the filter capacitor.

3. multi-functional integrated type intelligent network detector as claimed in claim 2, it is characterised in that the translated resistance includes First translated resistance and the second translated resistance, pass through conducting wire and institute between first translated resistance and second translated resistance State current conversion unit connection.

4. multi-functional integrated type intelligent network detector as claimed in claim 3, it is characterised in that the filter capacitor includes First filter capacitor and the second filter capacitor, are connect between first filter capacitor and second filter capacitor by conducting wire Ground.

5. multi-functional integrated type intelligent network detector as claimed in claim 4, it is characterised in that the current-limiting resistance includes First current-limiting resistance and the second current-limiting resistance, first current-limiting resistance and second current-limiting resistance are arranged on the conversion electricity Between resistance and the filter capacitor.

6. multi-functional integrated type intelligent network detector as claimed in claim 1, it is characterised in that the communication module includes Communicating circuit and data-interface, the communicating circuit include process chip and connection circuit, and the process chip passes through the company Circuit is connect to be connected with the data-interface, the microcontroller.

7. multi-functional integrated type intelligent network detector as claimed in claim 6, it is characterised in that the connection circuit includes First optocoupler, the second optocoupler, the 3rd optocoupler, the process chip include receiver and transmitter, the output terminal of the receiver It is connected by first optocoupler with the microcontroller, the input terminal of the transmitter passes through second optocoupler and the monolithic Machine connects, and the Enable Pin of the receiver and the transmitter is connected by the 3rd optocoupler with the microcontroller.

8. multi-functional integrated type intelligent network detector as claimed in claim 1, it is characterised in that the current conversion unit Power measurement chip is preferably arranged to the voltage conversion unit.

9. multi-functional integrated type intelligent network detector as claimed in claim 6, it is characterised in that the process chip is preferred It is arranged to MAX486 chips.