CN212675705U - Low-power-consumption explosion-proof current signal wireless acquisition terminal based on spread spectrum wireless technology - Google Patents

Low-power-consumption explosion-proof current signal wireless acquisition terminal based on spread spectrum wireless technology Download PDF

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Publication number
CN212675705U
CN212675705U CN202021842609.0U CN202021842609U CN212675705U CN 212675705 U CN212675705 U CN 212675705U CN 202021842609 U CN202021842609 U CN 202021842609U CN 212675705 U CN212675705 U CN 212675705U
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resistor
central processing
processing unit
pin
spread spectrum
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CN202021842609.0U
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陈沁�
任军
高尚
赵月
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Chengdu Keda Zhitong Technology Co ltd
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Chengdu Keda Zhitong Technology Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02DCLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00Reducing energy consumption in communication networks
    • Y02D30/70Reducing energy consumption in communication networks in wireless communication networks

Abstract

The utility model discloses a wireless acquisition terminal of explosion-proof current signal of low-power consumption includes STM32 series's central processing unit A2 based on spread spectrum wireless technology, be connected with central processing unit A2's serial port, and the model is ADS 8688's analog to digital converter A1, be connected with analog to digital converter A1, and be provided with the electric current information input circuit of several ways, be connected with central processing unit A2's serial port, and the model is SX1278_ MODE, a spread spectrum wireless communication chip M1 for data transmission, and with central processing unit A2, analog to digital converter A1 and the supply circuit that spread spectrum wireless communication chip M1 is connected. By the proposal, the utility model has the advantages of simple structure, data transmission are reliable, have very high practical value and spreading value in data acquisition technical field.

Description

Low-power-consumption explosion-proof current signal wireless acquisition terminal based on spread spectrum wireless technology
Technical Field
The utility model belongs to the technical field of the data acquisition technique and specifically relates to explosion-proof current signal of low-power consumption wireless acquisition terminal based on spread spectrum wireless technology.
Background
The low-power consumption explosion-proof current signal wireless acquisition terminal is a high-performance wireless transceiving unit aiming at acquisition and wireless transmission of various industrial field current analog quantity signals. Can be used as a perception terminal and a data transceiver station. The transmitting terminal realizes signal input and digitization, and modulates the signals to wireless carriers to realize wireless transmission. The receiving end realizes data restoration through corresponding wireless receiving and digital demodulation inversion processing. At present, current signal acquisition terminal among the prior art is mostly wired form, and it adopts circuit transformer to gather to carry out the transmission, and its transmission is mostly the direct transmission mode of cable, and it is applicable to the intensive laying of electrical equipment, but under the comparatively scattered condition of equipment distribution, its remote transmission has the loss, makes data acquisition's rate of accuracy reduce.
Therefore, a low-power consumption explosion-proof current signal wireless acquisition terminal based on a spread spectrum wireless technology, which has a simple structure and reliable data transmission, is urgently needed to be provided.
SUMMERY OF THE UTILITY MODEL
To the above problem, an object of the utility model is to provide a low-power consumption explosion-proof current signal wireless acquisition terminal based on spread spectrum wireless technology, the utility model discloses a technical scheme as follows:
the low-power-consumption explosion-proof current signal wireless acquisition terminal based on the spread-spectrum wireless technology comprises an STM32 series central processing unit A2, an analog-to-digital converter A1 which is connected with a serial port of a central processing unit A2 and has the model of ADS8688, a current information input circuit which is connected with the analog-to-digital converter A1 and is provided with a plurality of circuits, a spread-spectrum wireless communication chip M1 which is connected with a serial port of a central processing unit A2 and has the model of SX1278_ MODE and is used for data transmission, and a power supply circuit which is connected with the central processing unit A2, the analog-to-digital converter A1 and a spread-spectrum wireless communication chip M1;
the current information input circuit comprises a fuse F2 and a resistor R4 which are connected in series, wherein one end of the fuse F2 is connected with the positive electrode of a current input, the other end of the fuse F4 is connected with an analog-to-digital converter A1, a transient suppression diode D2 and a capacitor C3 which are connected in parallel, one end of the transient suppression diode D2 is connected between a fuse F2 and a resistor R4, the other end of the transient suppression diode D2 is connected with the negative electrode of the current input, one end of the resistor R55 is connected with the negative electrode of the current input, the other end of the resistor R55 is grounded, and a resistor R5 and a photoelectric relay.
Furthermore, the low-power consumption explosion-proof current signal wireless acquisition terminal based on the spread spectrum wireless technology further comprises an RS485 digital interface unit connected with the central processing unit A2 and the power supply circuit;
the RS485 digital interface unit comprises a communication interface chip A3 which is connected with a central processing unit A2 and has the model number of SP3485, and a transient suppression diode D3, an electrostatic diode D1 and a discharge tube F3 which are connected between a pin A and a pin B of the communication interface chip A3 after being connected in parallel.
Preferably, the power supply circuit comprises a direct current conversion chip A5 with model number TPS5430, a capacitor C28 and a capacitor C29 which are connected with the VIN pin of the direct current conversion chip A5 in parallel and the other end of which is grounded, a self-recovery fuse F5 and a diode D5 which are connected with the VIN pin of the direct current conversion chip A5 in series and the other end of which is connected with ground, a transient suppression diode VD1 which is connected between a self-recovery fuse F5 and a diode D5 and the other end of which is grounded, a diode D14, a resistor R70 and a resistor R71 which are connected with each other in series and the other end of which is connected with ground, a triode BG3 which is connected with the base of the diode D14 and the resistor R70 through a resistor R54 and the emitter of which is grounded, a field effect transistor Q2 which is connected with the collector of the triode BG3, a drain of which is connected with the field effect transistor Q2, and a drain of the field effect transistor Q2 which is connected with the drain of the transistor Q2, The dc conversion chip A6 is of a model number ME6214a33, a capacitor C30 connected between the PH pin of the dc conversion chip a5 and the BOOT pin, an inductor L1 and a capacitor C32 connected in series with one end connected to the PH pin of the dc conversion chip a5 and the other end grounded, an electronic R74 and a resistor R75 connected in series with one end connected between the inductor L1 and the capacitor C32 and the other end connected to the drain of the field-effect transistor Q2, a resistor R42 and a sliding resistor VR1 connected in parallel with one end connected between the inductor L1 and the capacitor C32 and the other end connected to the FB pin of the dc conversion chip a5, and a resistor R41 connected in parallel with one end to the FB pin of the dc conversion chip a5 and the other end grounded.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model skillfully arranges a multi-path current information input and an analog-to-digital converter to realize the conditioning and AD sampling of multi-path duty input signals and a multi-path switching circuit; additionally, the utility model discloses a wireless communication unit and antenna adopt spread spectrum wireless communication technique, carry out the analog signal who gathers and modulate to wireless communication unit after digital sampling and the processing to send through the antenna. Moreover, the power supply part of the utility model adopts the modes of voltage transformation, voltage stabilization, filtering and the like to arrange the input alternating current or direct current power supply; and the intelligent switch is adopted for control, so that the intelligent power on/off can be realized according to the requirements of the central processing unit. Thereby achieving more excellent low power consumption performance. To sum up, the utility model has the advantages of simple structure, data transmission are reliable, have very high practical value and spreading value in data acquisition technical field.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as a limitation of the scope of protection, and for those skilled in the art, other related drawings may be obtained from these drawings without inventive effort.
Fig. 1 is a schematic diagram of the central processing unit of the present invention.
Fig. 2 is the circuit schematic diagram of the RS485 digital interface unit of the present invention.
Fig. 3 is a schematic diagram of the power supply circuit of the present invention.
Fig. 4 is a schematic diagram of the spread spectrum wireless communication circuit of the present invention.
Fig. 5 is a schematic diagram of the current signal input circuit of the present invention.
Fig. 6 is a schematic diagram of an analog-to-digital converter according to the present invention.
Detailed Description
To make the objectives, technical solutions and advantages of the present application more clear, the present invention will be further described with reference to the accompanying drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Examples
As shown in fig. 1 to 6, the present embodiment provides a low-power consumption explosion-proof current signal wireless acquisition terminal based on a spread spectrum wireless technology, which includes a central processing unit a2 with a model number of STM32F103RBT6, an analog-to-digital converter a1 with a model number of ADS8688 connected to a serial port of the central processing unit a2, a current information input circuit with several circuits connected to the analog-to-digital converter a1, a spread spectrum wireless communication chip M1 with a model number of SX1278_ MODE connected to a serial port of the central processing unit a2 for data transmission, a power supply circuit connected to the central processing unit a2, the analog-to-digital converter a1 and the spread spectrum wireless communication chip M1, and an RS485 digital interface unit connected to the central processing unit a2 and the power supply circuit. It should be noted that the present embodiment is based on structural improvement, and does not improve a software program, and the present embodiment can be implemented by adopting a conventional program segment combination, which is not described herein again. In addition, the embodiment adopts the cast aluminum shell with the protection grade of IP65 or above to realize the water and explosion prevention of the equipment.
In this embodiment, the power supply provides dc +5V, +4.2V, +3.9V, and +3.3V for each circuit module, and includes a dc conversion chip A5 of model TPS5430, a capacitor C28 and a capacitor C29 connected in parallel with one end connected to the VIN pin of the dc conversion chip A5 and the other end grounded, a self-recovery fuse F5 and a diode D5 connected in series with one end connected to the VIN pin of the dc conversion chip A5, a transient suppression diode VD1 connected at one end between the self-recovery fuse F5 and a diode D5 and the other end grounded, a diode D14, a resistor R70, and a resistor R71 connected in series with one end connected between the self-recovery fuse F5 and a diode D5 and the other end grounded, a transistor BG 48 connected at its emitter to ground via the resistor R54, a fet Q2 connected at its gate to the drain of the transistor BG 5, and a fet Q2 connected to the drain of the transistor BG 5, A field effect transistor Q3 with a gate connected between the resistor R70 and the resistor R71, a dc conversion chip a6 of model ME6214a33 connected to the drain of the field effect transistor Q2, a capacitor C30 connected between the PH pin and the BOOT pin of the dc conversion chip a5, an inductor L1 and a capacitor C32 connected in series with one end connected to the PH pin of the dc conversion chip a5 and the other end grounded, an electronic R74 and a resistor R75 connected in series with one end connected between the inductor L1 and the capacitor C32 and the other end connected to the drain of the field effect transistor Q2, a resistor R42 and a sliding resistor VR1 connected in parallel with one end connected between the inductor L1 and the capacitor C32 and the other end connected to the FB pin of the dc conversion chip a5, and a resistor R41 connected at one end to the FB pin of the dc conversion chip a5 and the other end grounded.
In the present embodiment, the current information input circuit includes a fuse F2 and a resistor R4 connected in series with one end connected to the current input positive electrode and the other end connected to the analog-to-digital converter a1, a transient suppression diode D2 and a capacitor C3 connected in parallel with one end connected between the fuse F2 and the resistor R4 and the other end connected to the current input negative electrode, a resistor R55 connected in series with one end connected to the current input negative electrode and the other end connected to the ground, and a resistor R5 and a photo relay U2 connected in series with one end connected between the fuse F2 and the resistor R4 and the other end connected to the current input negative electrode. In addition, for debugging, parameter configuration or data communication, an RS485 digital interface unit is provided, which includes a communication interface chip A3 connected with the central processing unit a2 and having a model SP3485, and a transient suppression diode D3, an electrostatic diode D1 and a discharge tube F3 connected in parallel between the pin a and the pin B of the communication interface chip A3.
In the embodiment, a multi-channel current information input circuit is used for acquiring current signals, and an analog-to-digital converter a1 is used for multi-channel switching and converting the current signals into digital signals and feeding the digital signals back to a central processing unit a2, and the central processing unit a2 transmits the acquired digital signals by using a spread spectrum wireless communication chip M1.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and are not limitations on the protection scope of the present invention, but all the changes made by adopting the design principle of the present invention and performing non-creative work on this basis shall fall within the protection scope of the present invention.

Claims (3)

1. The wireless acquisition terminal of the low-power consumption explosion-proof current signal based on the spread spectrum wireless technology is characterized by comprising an STM32 series central processing unit A2, an analog-to-digital converter A1 which is connected with a serial port of a central processing unit A2 and has the model of ADS8688, a current information input circuit which is connected with the analog-to-digital converter A1 and is provided with a plurality of circuits, a spread spectrum wireless communication chip M1 which is connected with a serial port of a central processing unit A2 and has the model of SX1278_ MODE and is used for data transmission, and a power supply circuit which is connected with the central processing unit A2, the analog-to-digital converter A1 and a spread spectrum wireless communication chip M1;
the current information input circuit comprises a fuse F2 and a resistor R4 which are connected in series, wherein one end of the fuse F2 is connected with the positive electrode of a current input, the other end of the fuse F4 is connected with an analog-to-digital converter A1, a transient suppression diode D2 and a capacitor C3 which are connected in parallel, one end of the transient suppression diode D2 is connected between a fuse F2 and a resistor R4, the other end of the transient suppression diode D2 is connected with the negative electrode of the current input, one end of the resistor R55 is connected with the negative electrode of the current input, the other end of the resistor R55 is grounded, and a resistor R5 and a photoelectric relay.
2. The wireless low-power consumption explosion-proof current signal acquisition terminal based on the spread spectrum wireless technology as claimed in claim 1, further comprising an RS485 digital interface unit connected with the central processing unit A2 and the power supply circuit;
the RS485 digital interface unit comprises a communication interface chip A3 which is connected with a central processing unit A2 and has the model number of SP3485, and a transient suppression diode D3, an electrostatic diode D1 and a discharge tube F3 which are connected between a pin A and a pin B of the communication interface chip A3 after being connected in parallel.
3. The wireless collection terminal of low-power consumption explosion-proof current signal based on spread spectrum wireless technology as claimed in claim 1, wherein the power supply circuit comprises a DC conversion chip A5 with model number TPS5430, a capacitor C28 and a capacitor C29 with one end connected to VIN pin of the DC conversion chip A5 and the other end grounded after being connected in parallel, a self-recovery fuse F5 and a diode D5 with one end connected to VIN pin of the DC conversion chip A5 after being connected in series, a transient suppression diode VD1 with one end connected between the self-recovery fuse F5 and the diode D5 and the other end grounded, a diode D14, a resistor R70 and a resistor R71 with one end connected between the self-recovery fuse F5 and the diode D5 and the other end grounded, a triode BG3 with its base connected between the diode D14 and the resistor R70 through a resistor R54 and its emitter grounded, a field effect transistor Q2 with its gate connected to collector of the triode BG3, a field-effect transistor Q3 having a drain connected to the drain of the field-effect transistor Q2 and a gate connected between the resistor R70 and the resistor R71, a dc conversion chip a6 of model ME6214a33 connected to the drain of the field-effect transistor Q2, a capacitor C30 connected between the PH pin and the BOOT pin of the dc conversion chip A5, an inductor L1 and a capacitor C32 connected in series with one end connected to the PH pin of the dc conversion chip A5 and the other end grounded, an electronic R74 and a resistor R75 connected in series with one end connected between the inductor L1 and the capacitor C32 and the other end connected to the drain of the field-effect transistor Q2, a resistor R42 and a sliding resistor VR1 connected in parallel with one end connected between the inductor L1 and the capacitor C32 and the other end connected to the FB pin of the dc conversion chip A5, and a resistor R41 connected at one end to the FB pin of the dc conversion chip A5 and the other end grounded.
CN202021842609.0U 2020-08-28 2020-08-28 Low-power-consumption explosion-proof current signal wireless acquisition terminal based on spread spectrum wireless technology Active CN212675705U (en)

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Application Number Priority Date Filing Date Title
CN202021842609.0U CN212675705U (en) 2020-08-28 2020-08-28 Low-power-consumption explosion-proof current signal wireless acquisition terminal based on spread spectrum wireless technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021842609.0U CN212675705U (en) 2020-08-28 2020-08-28 Low-power-consumption explosion-proof current signal wireless acquisition terminal based on spread spectrum wireless technology

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CN212675705U true CN212675705U (en) 2021-03-09

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