CN205193154U - DC voltage monitoring devices that high accuracy is wireless - Google Patents
DC voltage monitoring devices that high accuracy is wireless Download PDFInfo
- Publication number
- CN205193154U CN205193154U CN201521031423.6U CN201521031423U CN205193154U CN 205193154 U CN205193154 U CN 205193154U CN 201521031423 U CN201521031423 U CN 201521031423U CN 205193154 U CN205193154 U CN 205193154U
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- voltage
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- controller
- wireless
- control unit
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Abstract
The utility model provides a DC voltage monitoring devices that high accuracy is wireless, include main control unit with from the controller, main control unit is with to carry out the signal from the controller through wireless transceiver circuit mutual, main control unit with from controller equal external clock circuit, reset circuit to and be used for showing data transmission state and monitoring value's display circuit, the differential voltage who awaits measuring connects main control unit through the voltage signal of signal conversion circuit switching for according with voltage acquisition circuit input voltage range, voltage acquisition circuit. The utility model discloses a communication between main control unit and the follow controller realizes the wireless monitoring of DC voltage. Main control unit utilizes the signal conversion circuit to widen the voltage input scope, through operating condition and the monitoring voltage of display circuit visual display main control unit with the follow controller.
Description
Technical field
The utility model belongs to electronic surveying field, is specifically related to a kind of high precision wireless DC voltage monitoring device.
Background technology
The measuring accuracy of most of voltage monitoring instrument to DC voltage is low on the market, wireless transmission function cannot be realized, its dirigibility is obviously inadequate, and the input voltage range of core devices A/D converter, slewing rate and precision, direct relation is had with its price, but can only single-ended signal be inputted between traditional A/D converter, and support that the more high factor of A/D converter price of input differential signal governs the cost performance of voltage monitoring instrument.
Utility model content
The purpose of this utility model is for above-mentioned defect of the prior art, provides a kind of high precision wireless DC voltage monitoring device, realizes wireless voltage acquisition, and solve the problems such as the low and cost performance of voltage acquisition precision is lower, plurality of voltages collection is easily expanded.
To achieve these goals, the technical solution adopted in the utility model is: comprise master controller with from controller, master controller is with to carry out signal from controller by wireless transceiver circuit mutual;
Described master controller with from the equal external clock circuit of controller, reset circuit, and the display circuit sending state and monitor value for showing data; Differential voltage to be measured is converted to the voltage signal meeting voltage collection circuit input voltage range through signal conversion circuit, voltage collection circuit connects master controller.
Described master controller with all adopt STC89C52 single-chip microcomputer from controller.
Described display circuit comprises LCD12864 graphic lcd display screen.
Described wireless transceiver circuit comprises NRF24L01 radio receiving transmitting module.
Described signal conversion circuit comprises two-stage OP07 integrated operational amplifier.
Described voltage collection circuit connects master controller through TLC2543 analog to digital converter.
Compared with prior art, the utility model, by master controller and from the communication between controller, realizes the wireless monitor of DC voltage.Master controller utilizes signal conversion circuit to widen input voltage range, by display circuit intuitively show master controller with from the duty of controller and monitoring voltage.The utility model realizes-10V ~+10V Real-Time Monitoring, and precision is 0.01V; At opening, when data transmission frequencies is lower than 66Kbps, transmission range reaches 1000 meters, is easy to expand to multichannel measurement.
Further, the utility model master controller with all adopt STC89C52 single-chip microcomputer from controller, reduce cost.
Accompanying drawing explanation
Fig. 1 structural schematic block diagram of the present utility model;
Fig. 2 the utility model master controller peripheral circuit schematic diagram;
Fig. 3 the utility model is from controller peripheral circuit schematic diagram;
In accompanying drawing: 1-master controller; 2-is from controller; 3-wireless transceiver circuit; 4-clock circuit; 5-reset circuit; 6-display circuit; 7-signal conversion circuit; 8-voltage collection circuit.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1, the conversion of master controller 1 circuit realiration signal and collection, process, display and transmission, realize the reception of data, analysis and display from controller 2.Wherein, clock circuit 4 and reset circuit 5 are prerequisites that Single Chip Microcomputer (SCM) system is normally run; Signal conversion circuit 7 realizes wide region differential voltage to be measured to be converted to the input voltage range meeting voltage collection circuit 8; Wireless transceiver circuit 3 realizes the real-time, interactive between image data slave; Display circuit 6 shows the transmission state of data and concrete monitor value; Slave controller realizes the process of image data, transmitting-receiving and display and control.The hardware design of slave is closely similar, is convenient to PCB placement-and-routing and program portable.The signal conversion circuit of the present embodiment is replaced with the Acquisition Circuit such as pressure, displacement, acceleration, this programme can realize the real time monitoring function of pressure, displacement, acceleration etc.
See Fig. 2, the signal conversion circuit 7, U3 that the host circuit of the present embodiment is made up of U5, U6 forms display circuit 6 that host computer control circuit 1, U2 that voltage collection circuit 8, U1 forms forms and the wireless transceiver circuit 3 that U4 is formed forms.Wherein, U5, U6 are integrated operational amplifier OP07, in signal conversion circuit, Vi is the input end gathering voltage, one end of connecting resistance R3,2 pin of the output termination integrated transporting discharging U5 of R3,2 pin of U5 and the indirect R6 of 6 pin are as feedback resistance, and+5V connects one end of R4,2 pin of another termination U5 of R4,3 pin of U5 through R5 ground connection, as build-out resistor.6 pin of U5 connect one end of R7,2 pin of another termination U6 of R7, and 2 pin of U6 and the indirect R9 of 6 pin are as feedback resistance, and 3 pin of U6 meet R8, the other end ground connection of R8, and wherein R8 is build-out resistor.+ 12V connects one end of electric capacity C6, C7, the other end ground connection of C6, C7, realize filter function, improve the stability of+12V voltage ,-12V connects one end of electric capacity C4, C5, the other end ground connection of C4, C5, realize filter function, improve the stability of-12V voltage ,+12V and-12V connects 7 pin and 4 pin of U5, U6 respectively, provides the voltage that integrated transporting discharging U5, U6 normally work.U5 and peripheral components form adding circuit, realize the translation of-10V ~ 10V to 0V ~-10V, and U6 and peripheral device form inverse proportion operational amplification circuit, and the ratio being used for realizing voltage is changed, i.e. the conversion of 0V ~-10V to 0V ~ 5V.
The voltage acquisition of the present embodiment and control circuit are made up of single-chip microcomputer U1 and 11 channel serial A/D converter U3, and wherein U1 model is STC89C52, U3 model is TLC2543.1 pin of U3 connects 6 pin of U6, passage 0 is utilized to change the voltage after U5, U6 conversion, 10 pin and 13 pin ground connection, 14 pin meet reference voltage+5V, 15,16,17 and 18 pin connect 6,5,4 and 3 pin of U1 respectively, realize the startup of U1 control U3, stopping, the reading of translated data and the selection of ALT-CH alternate channel, 20 pin of U3 meet+5V, for the normal work of U3 provides voltage.9 pin of U1 are reset terminal, and meet another termination+5V of button S1, electric capacity C1 and resistance R1, S1 and C1, the other end ground connection of R1, utilize the discharge and recharge of C1 to realize electrification reset, the break-make of S1 realizes hand-reset; 18,19 pin of U1 are input end of clock, connect the two ends of quartz oscillator Y1 and one end of electric capacity C2, C3 respectively, the other end ground connection of C2, C3, and for the normal work of U1 provides stable clock signal, wherein C2, C3 are for opening the electric capacity that shakes; The 20 pin ground connection of U1,31 and 40 pin meet+5V.
The display circuit 6 of the present embodiment main frame is made up of U2, and wherein U2 model is graphic lcd LCD12864.2,4,17 and 19 pin meet+5V, 1,15,20 pin ground connection, 3 pin connect the output terminal of slide rheostat R2, the another two ends of R2 connect+5V and ground respectively, by the adjustment regulating R2 to realize LCD12864 contrast, 5 pin are 28 pin of data I/O termination U1, and 6 pin are 27 pin of clock termination U1, and 28 pin of the clock signal synchronization U1 produced by 27 pin of U1 are input to the data of 5 pin of U2.This display circuit 6 adopts the mode connected in series of LCD12864 to save the I/O port resource of U1, simplifies hardware design.
The wireless transceiver circuit 3 of the present embodiment main frame is made up of U4, and wherein the model of U4 is NRF24L01.Its 1 pin ground connection, 2 pin connect the output terminal of slide rheostat R10, and the another two ends of R10 connect+5V and ground respectively, provide the operating voltage of+3.3V by regulating slide rheostat for U4; 3,4,5,6,7 and 8 pin of U4 connect 26,21,25,22,24 and 23 pin of U1 respectively, realize, by U1 control U4, completing the transmission of data.
See Fig. 3, the U1 from dynamo-electric route implementing controlling functions of the present embodiment, realize the U2 of Presentation Function and realize the U3 composition of radio transmission-receiving function.
The present embodiment is Single Chip Microcomputer (SCM) system from the control circuit of machine, the model of its U1 is STC89C52,9 pin of U1 are reset terminal, meet button S1, electric capacity C1 and resistance R1, another termination+5V of S1 and C1, the other end ground connection of R1, utilize the discharge and recharge of C1 to realize electrification reset, the break-make of S1 realizes hand-reset; 18,19 pin of U1 are input end of clock, connect the two ends of quartz oscillator Y1 and one end of electric capacity C2, C3 respectively, the other end ground connection of C2, C3, and for the normal work of U1 provides stable clock signal, wherein C2, C3 are for opening the electric capacity that shakes; The 20 pin ground connection of U1,31 and 40 pin meet+5V.
The present embodiment is made up of from the display circuit 6 of machine U2 module, the model of its U2 is LCD12864,2,4,17 and 19 pin meet+5V, 1,15,20 pin ground connection, 3 pin connect the output terminal of slide rheostat R2, and the another two ends of R2 connect+5V and ground respectively, by the adjustment regulating R2 to realize LCD12864 contrast, 5 pin are 28 pin of data I/O termination U1, and 6 pin are 27 pin of clock termination U1, and 28 pin of the clock signal synchronization U1 produced by 27 pin of U1 are input to the data of 5 pin of U2.This display circuit 6 adopts the mode connected in series of LCD12864 to save the I/O port resource of U1, simplifies hardware design.
The present embodiment is made up of from the wireless transceiver circuit 3 of machine U3 module, and the model of U3 is NRF24L01.Its 1 pin ground connection, 2 pin connect the output terminal of slide rheostat R3, and the another two ends of R3 connect+5V and ground respectively, provide the operating voltage of+3.3V by regulating slide rheostat for U3; 3,4,5,6,7 and 8 pin of U3 connect 26,21,25,22,24 and 23 pin of U1 respectively, realize, by U1 control U3, completing the reception of data.The data sent by main frame from the display data of machine determine, the signal conversion circuit in host circuit is replaced with the data acquisition circuits such as pressure, displacement, acceleration, this programme can realize the wireless monitoring function of pressure, displacement, acceleration etc.
Claims (6)
1. a high precision wireless DC voltage monitoring device, it is characterized in that: comprise master controller (1) with from controller (2), master controller (1) is with to carry out signal from controller (2) by wireless transceiver circuit (3) mutual;
Described master controller (1) with from controller (2) all external clock circuit (4), reset circuit (5), and the display circuit (6) sending state and monitor value for showing data; Differential voltage to be measured is converted to the voltage signal meeting voltage collection circuit (8) input voltage range through signal conversion circuit (7), voltage collection circuit (8) connects master controller (1).
2. high precision wireless DC voltage monitoring device according to claim 1, is characterized in that: described master controller (1) with all adopt STC89C52 single-chip microcomputer from controller (2).
3. high precision wireless DC voltage monitoring device according to claim 1, is characterized in that: described display circuit (6) comprises LCD12864 graphic lcd display screen.
4. high precision wireless DC voltage monitoring device according to claim 1, is characterized in that: described wireless transceiver circuit (3) comprises NRF24L01 radio receiving transmitting module.
5. high precision wireless DC voltage monitoring device according to claim 1, is characterized in that: described signal conversion circuit (7) comprises two-stage OP07 integrated operational amplifier.
6. high precision wireless DC voltage monitoring device according to claim 1, is characterized in that: described voltage collection circuit (8) connects master controller (1) by TLC2543 analog to digital converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031423.6U CN205193154U (en) | 2015-12-10 | 2015-12-10 | DC voltage monitoring devices that high accuracy is wireless |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031423.6U CN205193154U (en) | 2015-12-10 | 2015-12-10 | DC voltage monitoring devices that high accuracy is wireless |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205193154U true CN205193154U (en) | 2016-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521031423.6U Expired - Fee Related CN205193154U (en) | 2015-12-10 | 2015-12-10 | DC voltage monitoring devices that high accuracy is wireless |
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| CN (1) | CN205193154U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467199A (en) * | 2015-12-10 | 2016-04-06 | 榆林学院 | High precision wireless DC voltage monitoring device |
-
2015
- 2015-12-10 CN CN201521031423.6U patent/CN205193154U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105467199A (en) * | 2015-12-10 | 2016-04-06 | 榆林学院 | High precision wireless DC voltage monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160427 Termination date: 20161210 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |