CN115484113A - POE-based weighing sensor signal and power supply synchronization system and method - Google Patents
POE-based weighing sensor signal and power supply synchronization system and method Download PDFInfo
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- CN115484113A CN115484113A CN202210785978.8A CN202210785978A CN115484113A CN 115484113 A CN115484113 A CN 115484113A CN 202210785978 A CN202210785978 A CN 202210785978A CN 115484113 A CN115484113 A CN 115484113A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
Abstract
The invention discloses a POE-based weighing sensor signal and power supply synchronization system and method, which comprises an RJ45 terminal, wherein the input end of the RJ45 terminal is connected with a signal line of a POE switch module, the output end of the RJ45 terminal comprises a signal output end and a power supply output end, the signal output end of the RJ45 terminal is connected with a communication circuit through a network transformer, and the power supply output end of the RJ45 terminal is connected with the power supply circuit. Adopt POE communication power supply technique based on ethernet, realize the transmission in the lump of data power through the RJ45 terminal. Connect POE switch module through the RJ45 terminal, through the POE agreement, handshake with the switch, the negotiation obtains a reasonable supply voltage, and the negotiation obtains supply voltage, and will via the mains voltage adjustment of RJ45 terminal separation does supply voltage is used for doing weighing sensor supplies power. Meanwhile, the high-speed Ethernet data communication rate is realized through the high-integration Ethernet chip.
Description
Technical Field
The invention relates to the technical field of sensors, in particular to a POE-based weighing sensor signal and power supply synchronization system and method.
Background
The mainstream sensors on the market today mainly transmit analog signals or digital signals, and usually the power supply unit and the communication unit are independent. The power supply part is usually from a switch power supply of a system or an output power supply in a control panel, the communication part is usually directly connected with the control panel, and the existing technical scheme is that, for example, a sensor is respectively communicated in an RS485 mode and is powered by a 9 to 15V power supply; for example, the sensor is powered by an original voltage signal mode, the power supply range is usually 5V, the AD chip directly connected to the rear end directly acquires signals through the ADC, and the problems of independent power supply and communication connection, complex wiring, large wiring requirement, and easy wiring error exist, and meanwhile, the problem of low communication rate due to the adoption of the voltage signal mode is also existed.
Disclosure of Invention
The invention provides a POE-based weighing sensor signal and power supply synchronization system for realizing power supply and transmission integration, aiming at solving the problems that in the prior art, a weighing sensor needs to be connected with a power supply and a communication line respectively, so that the wiring is complex, and the existing common-cable transmission communication efficiency is low.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a weighing sensor signal and power synchronization system based on POE, its characterized in that includes the RJ45 terminal, the input of RJ45 terminal is connected with the signal line of POE switch module, the output of RJ45 terminal includes signal output part and power output end, the signal output part of RJ45 terminal is connected with communication circuit through the network transformer, power supply circuit is connected to the power output of RJ45 terminal. Specifically, adopt the RJ45 port of taking network transformer to be connected with POE switch module, handshake with POE switch module through the POE agreement, the negotiation obtains supply voltage for the sensor supplies power. And the POE communication power supply technology based on the Ethernet is adopted, and the data power supply is transmitted together through the RJ45 terminal.
Preferably, the power supply circuit includes a rectifying circuit, a handshaking circuit and an identification circuit, and the rectifying circuit, the handshaking circuit and the identification circuit are used for completing the rectifying, handshaking and identification work of the POE switch module to obtain the voltage of the power supply circuit. After the handshake recognition is finished, constant voltage is output to the power supply circuit through the RJ45 port and used for supplying power for the weighing sensor.
Preferably, the weighing system further comprises a signal acquisition module, and the signal acquisition module is in data connection with the weighing sensor to acquire ADC analog signals. And the high-speed Ethernet chip is adopted to realize the data acquisition and transmission of the ADC at the high-speed Ethernet data communication rate.
Preferably, the signal acquisition module comprises a signal acquisition circuit, an AD chip and a high-speed Ethernet chip, the input end of the signal acquisition circuit is in data connection with the weighing sensor, the signal acquisition circuit outputs the acquired signal to be connected with the signal input end of the AD chip, and the AD chip outputs the acquired signal to the high-speed Ethernet chip after AD conversion. The model of AD chip is AS7190, the acquisition circuit includes ADC signal interface P3, inductance L2, inductance L3, resistance R22, resistance R23, resistance C31, resistance C32, resistance C34, the first pin of ADC signal interface is connected with the 5V power, ADC signal interface P3 second pin is connected with inductance L2 one end, the inductance L2 other end is connected with resistance R22 one end, the resistance R22 other end is connected with capacitance C31 one end, the other end of capacitance C31 is connected with AGND layer ground, AGND layer ground and GND layer ground between be connected with resistance R25, capacitance C31 one end is acquisition circuit signal output positive pole port, acquisition circuit signal output positive pole port is connected with AD chip signal input positive pole port, ADC signal interface P3's third pin is connected with inductance L3 one end, the inductance L3 other end is connected with resistance R23 one end, the resistance R23 other end is connected with capacitance C34 one end, the capacitance C43 other end is connected with AGND layer ground, capacitance C34 one end is acquisition circuit output signal output negative pole, the capacitance C32 one end is connected with capacitance C32, the capacitance C32 one end is connected with the acquisition circuit signal output negative pole connection port. The accuracy of data acquisition is improved.
Preferably, an interface TD + of the network transformer is connected to a first pin of an RJ input port, an interface TD-of the network transformer is connected to a second pin of the RJ input port, an interface RD + of the network transformer is connected to a third pin of the RJ input port, an interface RD-of the network transformer is connected to a fourth pin of the RJ input port, an interface TPTX + of the network transformer is connected to one end of a resistor R26, an interface TPTX-of the network transformer is connected to one end of a resistor R27, the other end of the resistor R26 and the other end of the resistor R27 are both connected to one end of a capacitor C35, the other end of the capacitor C35 is connected to GND, an interface TPRX + of the network transformer is connected to one end of a resistor R32, an interface TPRX-of the network transformer is connected to one end of a resistor R33, the other end of the resistor R33 and the other end of the resistor R32 are both connected to a capacitor C45, and the other end of the capacitor C45 is connected to GND. The model of network transformer is H1102NL, the second terminal and the electric capacity C33 of network transformer are connected, and the electric capacity C33 other end is connected with GND layer ground, the 15 th interface and the resistance R45 one end of network transformer are connected, the resistance R45 other end is connected with electric capacity R46, the electric capacity R46 other end is connected with EARTH layer ground, be connected with electric capacity C48 between EARTH layer ground and GND layer ground, electric capacity C48 both ends have parallelly connected resistance R31.
Preferably, the model of the high-speed ethernet chip is W7500P.
A POE-based weighing sensor signal and power synchronization method is used for any POE-based weighing sensor signal and power synchronization system.
Preferably, the method comprises the following steps: weighing sensor shakes hands through POE agreement and POE switch module, and the negotiation obtains supply voltage to will via the mains voltage adjustment of RJ45 terminal separation does supply voltage is used for doing weighing sensor supplies power.
Therefore, the invention has the following beneficial effects: through POE communication power supply technique based on ethernet, adopt RJ45 connecting terminal, realize the transmission in the lump of data power. Connect POE switch module through the RJ45 terminal, through the POE agreement, handshake with the switch, the negotiation obtains a reasonable supply voltage for the power supply of sensor. Meanwhile, the high-integration Ethernet chip W7500P is used for realizing the high-speed Ethernet data communication rate and ADC data acquisition.
Drawings
Fig. 1 is a circuit diagram of an RJ45 terminal and a switch of a power supply and communication system of a POE load cell according to an embodiment of the present invention.
Fig. 2 is a circuit diagram of a signal acquisition circuit and an AD chip of a power supply and communication system of a POE weighing sensor according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of a high-level ethernet chip of a power supply and communication system of a POE load cell according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and embodiments.
Example (b):
the utility model provides a POE weighing sensor's power supply and communication system, includes the RJ45 terminal, the input of RJ45 terminal is connected with the signal line of POE switch module, the output of RJ45 terminal includes signal output part and power output end, the signal output part of RJ45 terminal passes through network transformer and is connected with communication circuit, as shown in figure 1, network transformer's interface TD + is connected with the first pin of RJ input port, network transformer's interface TD-is connected with the second pin of RJ input port, network transformer's interface RD + is connected with the third pin of RJ input port, network transformer's interface TPTX + is connected with resistance R26 one end, network transformer's interface TPTX-is connected with resistance R27 one end, resistance R26's the other end and resistance R27's the other end all are connected with electric capacity C35 one end, the electric capacity C35 other end is connected with the ground layer, network transformer's interface TPTX + is connected with resistance R32 one end, network transformer's interface TPRx-is connected with resistance R33 one end, resistance R33 and resistance R33's the other end and resistance R33 all is connected with GND, resistance R45 is connected with the other end and GND ground layer. The model of network transformer is H1102NL, the second terminal and the electric capacity C33 of network transformer are connected, and the electric capacity C33 other end is connected with GND layer ground, the 15 th interface and the resistance R45 one end of network transformer are connected, the resistance R45 other end is connected with electric capacity R46, the electric capacity R46 other end is connected with EARTH layer ground, be connected with electric capacity C48 between EARTH layer ground and GND layer ground, electric capacity C48 both ends have parallelly connected resistance R31. And the power supply output end of the RJ45 is connected with a power supply circuit. The power supply circuit comprises a rectifying circuit, a handshaking circuit and an identification circuit, wherein the rectifying circuit, the handshaking circuit and the identification circuit are used for completing the rectification, handshaking and identification work of the POE switch module to obtain the voltage of the power supply circuit. And after handshake recognition is finished, constant voltage is output to the power supply circuit through the RJ45 port and used for supplying power to the sensor.
As shown in fig. 2 and 3, the signal acquisition module comprises a signal acquisition circuit, an AD chip and a high-speed ethernet chip, the model of the high-speed ethernet chip is W7500P, the input end of the signal acquisition circuit is in data connection with the weighing sensor, the signal acquired by the signal acquisition circuit is connected with the signal input end of the AD chip, and the AD chip performs AD conversion on the acquired signal and outputs the signal to the high-speed ethernet chip. The model of AD chip is AS7190, the acquisition circuit includes ADC signal interface P3, inductance L2, inductance L3, resistance R22, resistance R23, resistance C31, resistance C32, resistance C34, the first pin of ADC signal interface is connected with the 5V power, ADC signal interface P3 second pin is connected with inductance L2 one end, the inductance L2 other end is connected with resistance R22 one end, the resistance R22 other end is connected with capacitance C31 one end, the other end of capacitance C31 is connected with AGND layer ground, be connected with resistance R25 between AGND layer ground and GND layer ground, capacitance C31 one end is acquisition circuit signal output positive pole port, acquisition circuit signal output positive pole port is connected with AD chip signal input positive pole port, the third pin of ADC signal interface P3 is connected with inductance L3 one end, the inductance L3 other end is connected with resistance R23 one end, the resistance R23 other end is connected with capacitance C34 one end, the capacitance C43 other end is connected with AGND layer ground, capacitance C34 one end is acquisition circuit output signal output negative pole port, the capacitance C32 negative pole acquisition circuit output signal output port is connected with capacitance C34 one end, the capacitance C32 one end is connected with capacitance C32 one end, the capacitance C32 one end is connected with the capacitance C34. The accuracy of data acquisition is improved.
This embodiment still discloses a weighing sensor signal and power synchronization method based on POE for but not limited to POE weighing sensor's that this embodiment provided power supply and communication system, weighing sensor passes through POE agreement and handshakes with POE switch module, and the negotiation obtains supply voltage, and will via the mains voltage adjustment of RJ45 terminal separation does supply voltage, be used for the weighing sensor power supply.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the terms weighing sensor, network transformer, POE switch, high speed ethernet chip, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (8)
1. The utility model provides a weighing sensor signal and power synchronization system based on POE, a serial communication port, including the RJ45 terminal, the input of RJ45 terminal is connected with the signal line of POE switch module, the output of RJ45 terminal includes signal output part and power output part, the signal output part of RJ45 terminal is connected with communication circuit through network transformer, power supply circuit is connected to the power output part of RJ45 terminal.
2. The POE-based weighing sensor signal and power supply synchronization system of claim 1, wherein the power supply circuit comprises a rectifying circuit, a handshaking circuit and an identification circuit, and the rectifying circuit, the handshaking circuit and the identification circuit are used for completing the rectifying, handshaking and identification of the POE switch module to obtain the voltage of the power supply circuit.
3. The POE-based weighing sensor signal and power supply synchronization system of claim 2, further comprising a signal acquisition module, wherein the signal acquisition module is connected with the weighing sensor data to acquire an ADC analog signal.
4. The POE-based weighing sensor signal and power synchronization system of claim 3, wherein the signal acquisition module comprises a signal acquisition circuit, an AD chip and a high-speed Ethernet chip, the input end of the signal acquisition circuit is in data connection with the weighing sensor, the signal acquisition circuit outputs the acquired signal to be connected with the signal input end of the AD chip, and the AD chip performs AD conversion on the acquired signal and outputs the signal to the high-speed Ethernet chip.
5. The POE-based weighing sensor signal and power synchronization system of claim 4, wherein an interface TD + of the network transformer is connected to a first pin of an RJ input port, an interface TD-of the network transformer is connected to a second pin of the RJ input port, an interface RD + of the network transformer is connected to a third pin of the RJ input port, an interface RD-of the network transformer is connected to a fourth pin of the RJ input port, an interface TPTX + of the network transformer is connected to one end of a resistor R26, an interface TPTX-of the network transformer is connected to one end of a resistor R27, the other ends of the resistor R26 and the resistor R27 are connected to one end of a capacitor C35, the other end of the capacitor C35 is connected to GND layer, an interface TPRx + of the network transformer is connected to one end of a resistor R32, an interface TPRx-of the network transformer is connected to one end of a resistor R33, the other ends of the resistor R33 and the resistor R32 are connected to one end of a capacitor C45, and the other end of the capacitor C45 is connected to GND layer.
6. The POE-based weighing sensor signal and power synchronization system of claim 5, wherein the type of the high-speed Ethernet chip is W7500P.
7. A POE-based weighing sensor signal and power synchronization method is used for the POE-based weighing sensor signal and power synchronization system of claims 1-6.
8. The POE-based weighing sensor signal and power synchronization method of claim 7, comprising: weighing sensor passes through POE agreement and POE switch module handshake, and the negotiation obtains supply voltage, and will via the mains voltage adjustment of RJ45 terminal separation does supply voltage is used for doing the weighing sensor power supply.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210785978.8A CN115484113A (en) | 2022-07-04 | 2022-07-04 | POE-based weighing sensor signal and power supply synchronization system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210785978.8A CN115484113A (en) | 2022-07-04 | 2022-07-04 | POE-based weighing sensor signal and power supply synchronization system and method |
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| WO2022266696A1 (en) * | 2021-06-21 | 2022-12-29 | Electrical Engineering Solutions Pty Ltd | Multi-drop poe network for power distribution and communication |
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2022
- 2022-07-04 CN CN202210785978.8A patent/CN115484113A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| CN205545673U (en) * | 2016-02-01 | 2016-08-31 | 孙兆友 | Real -time collection system of on -vehicle weapon platform state parameter |
| CN208635900U (en) * | 2018-08-13 | 2019-03-22 | 南京鹏图电源有限公司 | A kind of novel dynamic track balance system |
| CN209046658U (en) * | 2018-11-09 | 2019-06-28 | 吾诺瑟斯科技(天津)有限公司 | General multiplex roles internet of things data collection |
| CN209200767U (en) * | 2018-12-05 | 2019-08-02 | 浙江永基智能科技有限公司 | A kind of low-voltage dc power supply remote monitoring system |
| CN210250332U (en) * | 2019-04-17 | 2020-04-07 | 深圳市优特普技术有限公司 | Intelligent sickbed and sickbed system using PoE power supply and communication |
| CN110266503A (en) * | 2019-06-29 | 2019-09-20 | 宁波瑞辉智能科技有限公司 | A kind of embedded industrial control terminal of double network interfaces for supporting POE to power |
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