CN201290068Y - Terminal for monitoring power supply environment - Google Patents
Terminal for monitoring power supply environment Download PDFInfo
- Publication number
- CN201290068Y CN201290068Y CNU2008200651962U CN200820065196U CN201290068Y CN 201290068 Y CN201290068 Y CN 201290068Y CN U2008200651962 U CNU2008200651962 U CN U2008200651962U CN 200820065196 U CN200820065196 U CN 200820065196U CN 201290068 Y CN201290068 Y CN 201290068Y
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- monitoring terminal
- chip microcomputer
- environment monitoring
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Abstract
The utility model relates to a power source environment monitoring terminal, which comprises a single chip microcomputer, an LCD display, a communication module for uploading information to a host station server, an alternating current filtering rectifier and the signal conditioning circuit thereof, a direct current filter and the signal conditioning circuit thereof, a sampling circuit, a voltage measuring chip, a temperature sensor and a humidity sensor. The monitoring terminal can automatically monitor the alternating current and direct current power sources of a microwave communication base station as well as the temperature and the humidity inside the base station, and upload the information to the host station server, so as to ensure the base station equipment to operate in a monitored state to maintain a smooth communication network; and has the advantages of stable and reliable operation and low cost.
Description
Technical field
The utility model relates to the unattended operating office of electric power system, particularly to temperature in the AC and DC power supply of microwave communication base station and the base station, humidity is monitored automatically and be uploaded to the microcomputer automated monitor of main website server.
Background technology
At present, the power-supply system of the microwave communication base station in unattended operating office, the particularly mountain area of electric power system, what usually adopt is the 220V Alternating Current Power Supply as main power source, 48V storage battery power supply in support, will automatically switch to storage battery power supply after the external communication power supply disappears.In actual motion, owing to lack distant early warning, the AC power disappearance will cause the long-time power supply of direct-flow storage battery and cause that the battery deep discharge damages, owing electricity until DC power supply causes communication network to interrupt just causing central station operator on duty's attention, thereby impact for the operate as normal of enterprise, and bring economic loss.The communication base station of China Mobile, CHINAUNICOM has adopted monitoring terminal on a large scale, the operating state of base station can be focused on central station and monitors.But since these monitoring terminals towards user's request differ greatly, move, UNICOM more is the monitoring for the communication channel state, and the channel quantity that each monitoring terminal is monitored is bigger, the price of its terminal is also higher.It is not to design at the monitoring of the unattended operating office power work of electric power system state and early warning, can not solve the operating office power-supply system problem of monitoring in real time.
The utility model content
The purpose of this utility model provides a kind of power environment monitoring terminal, so that the operating state of AC and DC power-supply system in the unattended communication base station and base station internal environment temperature, humidity are monitored in real time.
This novel purpose is achieved in that a kind of power environment monitoring terminal, comprises single-chip microcomputer, and LCD display and upload the communication module of information to the main website server is characterized in that: also have,
Ac filter rectification and signal conditioning circuit thereof: three-phase alternating current is respectively in turn after LC Π mode filter, three-phase bridge rectifier are handled, carry out the amplitude adjustment through instrument transformer and sampling resistor again;
DC filtering and signal conditioning circuit thereof: 5 road direct currents are respectively after capacitive filter is handled, carry out the amplitude adjustment through divider resistance again;
Sample circuit: after single 8 path analoging switch and follower processing, export respectively by the AC and DC signal that above-mentioned signal conditioning circuit comes;
The voltage measurement chip: accept the signal of sample circuit, it is carried out effective value measure, its result exports described single-chip microcomputer to;
Temperature sensor: be connected with single-chip microcomputer;
Humidity sensor: be connected with single-chip microcomputer.
This novel employing singlechip technology monitoring alternating voltage, direct voltage, ambient temperature, the humidity of while measure field, utilize the GPRS network of China Mobile regularly the measurement data of monitoring terminal to be uploaded to the monitoring main website, active report and alarm information when measurement data is out-of-limit.Data transmission channel also can be supported Ethernet or RS232 mode.
This novel beneficial effect is:
1, designs specially at the monitoring problem of unattended communication base station AC and DC power-supply system, can be in real time with data upload such as the working condition of AC and DC power supply in the base station and ambient temperature, humidity to the main website server, base station equipment is among the normal operating conditions, keeps communication network unimpeded.
2, because the purpose of this utility model is clear and definite, when design, just considered the cost problem of terminal, the power environment monitoring terminal that finally develops has bigger cost advantage relatively.
Description of drawings
Fig. 1 is this novel electric principle framework figure;
Fig. 2 is ac filter shown in Figure 1 (rectification) circuit diagram;
Fig. 3 is a DC filtering circuit diagram shown in Figure 1;
Fig. 4 is the signal conditioning circuit figure after interchange shown in Figure 1, the DC filtering;
Fig. 5 is the sample circuit figure of voltage measurement chip shown in Figure 1;
Fig. 6 is humidity sensor circuit figure;
Fig. 7 is temperature sensor circuit figure;
Fig. 8 is the circuit diagram of single-chip microcomputer shown in Figure 1;
Fig. 9 is ethernet interface circuit figure;
Figure 10 is GPRS telecommunication circuit figure;
Figure 11 is a lcd screen segment encode hum pattern.
Embodiment
Fig. 1 illustrates, this novel single-chip microcomputer that comprises, LCD display and upload the communication module of information to the main website server, it is characterized in that: also have ac filter rectification and signal conditioning circuit thereof: three-phase alternating current is respectively in turn after LC Π mode filter, three-phase bridge rectifier are handled, carry out the amplitude adjustment through instrument transformer and sampling resistor again; DC filtering and signal conditioning circuit thereof: 5 road direct currents are respectively after capacitive filter is handled, carry out the amplitude adjustment through divider resistance again; Sample circuit: after single 8 path analoging switch and follower processing, export respectively by the AC and DC signal that above-mentioned signal conditioning circuit comes; The voltage measurement chip: accept the signal of sample circuit, it is carried out effective value measure, its result exports described single-chip microcomputer to; Temperature sensor: be connected with single-chip microcomputer; Humidity sensor: be connected with single-chip microcomputer.Referring to Fig. 2 Fig. 3 Fig. 4, voltage measurement chip model is CS5460A; Each single phase alternating current (A.C.) filter rectification and signal conditioning circuit thereof consist of: the tap 1 of electric capacity XC11 one end and annular common mode inductance FD1 all is connected to this phase line, after the tap 2 of FD1 is connected to electric capacity XC21 one end, be connected to a phase voltage input of three-phase bridge rectifier again, the other end of XC11 and XC21 all is connected to zero line, the tap 7 of FD1 is connected to zero line, tap 8 is connected to the earthed voltage input of three-phase bridge rectifier, the signal output part of three-phase bridge rectifier is connected to the tap 1 of instrument transformer T3 primary coil, ground connection behind the tap 3 series resistance R31 of T3 primary coil, the tap 2 of T3 secondary coil, be serially connected with sampling resistor R32 between the tap 4, tap 2 is connected to sample circuit; Each road DC filtering and signal conditioning circuit thereof consist of: direct-flow positive pole ground connection, electric capacity XC1 is serially connected between the direct current positive and negative electrode, is connected to sample circuit behind the direct current negative pole serial connection divider resistance R21.In each single phase alternating current (A.C.) filter rectification and the signal conditioning circuit thereof, also have two and be annular common mode inductance FD2, the FD3 that series connection is provided with, the tap 1 of FD2 is connected to the tap 2 of annular common mode inductance FD1, the tap 2 of FD3 is connected to a phase voltage input of three-phase bridge rectifier, and also is serially connected with common mode inductance L12 on the phase voltage output of three-phase bridge rectifier.The inductance value of annular common mode inductance FD1, FD2, FD3 is respectively 5mH, 1.5mH, 15mH; The inductance value of common mode inductance L12 is 20mH; Electric capacity XC11, XC21, XC1 are 0.1 μ K/275V; Divider resistance R21 is 120K Ω.In each single phase alternating current (A.C.) filter rectification and the signal conditioning circuit thereof, be serially connected with the piezo-resistance MYG1 of lightning protection effect between phase line and the zero line; In each road diameter filtering and the signal conditioning circuit thereof, be serially connected with the piezo-resistance MYG11 of lightning protection effect between the direct current positive and negative electrode.Referring to Fig. 5, sample circuit consists of: the signal from three-phase alternating current is connected to single eight path analoging switch CD4051B inputs respectively, the CD4051B output is connected to 3 pin of follower OP07, the 2 pin ground connection of OP07 are connected to 16 pin of voltage measurement chip CS5460A behind the 6 pin series resistor R26 of OP07; Be connected to single eight path analoging switch CD4051B inputs respectively from galvanic 5 road signals, the CD4051B output is connected to 3 pin of follower OP07, the 2 pin ground connection of OP07, and 6 pin of OP07 are connected to 9 pin of CS5460A.Referring to Fig. 8, the single-chip microcomputer model is MSP430F449; 5,23,6,7,19 pin of voltage measurement chip CS5460 are connected to 84,96,97,2,95 pin of single-chip microcomputer respectively.Referring to Fig. 6 Fig. 7, humidity sensor consists of: transducer HS1101 is serially connected between 6 pin and ground of integrated package 7555, is connected to 85 pin of single-chip microcomputer MSP430F449 behind the 3 pin series resistor R51 of integrated package 7555; The model of temperature sensor is DS18B20, and 2 pin of DS18B20 are connected to 65 pin of single-chip microcomputer MSP430F449.Referring to Fig. 9, communication module is the built-in network module ZNE-10T that is used to utilize Ethernet to be connected with the main website server, and ZNE-10T is connected with microcontroller serial port.Referring to Figure 10, communication module is MC55, and MC55 is connected with single-chip microcomputer.
After process lightning protection of AC and DC input voltage and the Filtering Processing, alternating voltage is delivered to electronic switch then through current-limiting resistance, instrument transformer, sampling resistor; Direct voltage is delivered to electronic switch after sampling through divider resistance.The CS5460A chip is adopted in voltage measurement, obtains measured signal from electronic switch successively, and measurement result is delivered to host CPU.Host CPU adopts Ti 16 single-chip microcomputer MSP430F449 of company, and temperature sensor adopts the DS18B20 wire Digital Thermometer transducer of DALLAS company, and humidity sensor adopts the HS1101 of French Humirel company and carries out error correction.Measurement result shows the LCD screen that exports custom-designed 128 sections to by the segment encode of host CPU, realizes local Presentation Function and man-machine interaction.The alternating voltage that the power environment monitoring terminal measures, direct voltage, temperature, humidity and warning information, by GPRS mode or Ethernet or directly adopt the RS232 mode, be uploaded to the main website server of monitoring system, and when appearance is unusual, initiatively point out the operation maintenance personnel by short message, realize the distant early warning function of power environment monitoring.
1, ac filter circuit (containing rectification)
Ac filter circuit adopts zinc oxide pressure-sensitive element (piezo-resistance) the realization lightning protection of 3 14K681 to reinstate as shown in Figure 2; Safety electric capacity XC11, XC12, XC13, XC21, XC22, XC23 and ring-like common mode inductance FD1, FD2, FD3 form the three-phase alternating current filter, realize electromagnetic compatibility EMI, wherein the parameter value of FD1, FD2, FD3 is defined as about 5mH, 1.5mH, 15mH by EMC test; 8 silicon rectifier diodes are formed three-phase bridge rectifier circuit, with the three-phase alternating-current supply of guaranteeing to import (can be zero broken string mutually) when breaking for two groups the output of direct current commutating voltage can be arranged still; Direct voltage after the rectification once more through the common mode inductance L12 of a 20mH to strengthen the ability of anti-electromagnetic compatibility, voltage+the V of output is required through the Switching Power Supply loop generation+5.0V direct voltage supplying apparatus work of back, and electrochemical capacitor C3, C3A connect to satisfy requirement of withstand voltage.
2, DC filtering circuit
Just relatively much more simply the filtering of direct-current input power supplying, consider 5 groups of direct currents measured all be 48V and positive pole altogether, therefore adopted piezo-resistance 14K151 to carry out lightning protection, after magnetic bead and safety electric capacity carry out filtering, carry out the amplitude adjustment of signal again, referring to accompanying drawing 3.
3, signal condition
The purpose of signal condition be amplitude amplitude limit with measured alternating voltage, direct voltage in the measuring range of CS5460A, guarantee the undistorted of signal simultaneously.The electric resistance partial pressure mode is adopted in the signal amplitude adjustment of DC measurement voltage, and instrument transformer and sampling resistor are adopted in the signal amplitude adjustment of AC measurment voltage, as shown in Figure 4.All resistance all are the precision resistances of precision 0.1%.
4, sampling circuit
As shown in Figure 5,5 road direct-flow input signals, enter CS5460A respectively and carry out effective value and measure through U30 analog switch and U31 follower through U21 analog switch and U13 follower, 3 road ac input signals, and single-chip microcomputer reads measurement data by spi bus then.The input of single-chip microcomputer loop control U21 and U30 bring in select 8 road input signals wherein two, ICL7660 conversion-5V provides working power for U13, U31.
5, temperature/humidity sensor
As shown in Figure 6, the HS1101 transducer is adopted in moisture measurement, and the humidity-frequency characteristic by measuring frequency mode and HS1101 obtains humidity value.When precision resistance R50, R52, R53 adopted parameter shown in the last figure, U12 must adopt 7555 of Harris brand.
DS18B20 single-line type temperature sensor is adopted in temperature survey, the data of measuring are directly delivered to single-chip microcomputer and are handled (referring to Fig. 7, temperature sensor has adopted 2, an internal temperature that is used for monitoring device, another is by the terminal board interface of device, be connected with the temperature sensor of outside, connection is to adopt special-purpose shielded type cable).
6, host CPU circuit
Referring to accompanying drawing 8.
Host CPU adopts the Ti MSP430F449 of company, produces power-on reset signal by U27 (SP708S) when device powers on, and makes single-chip microcomputer begin to enter normal operating conditions; U20 adopts ferroelectric memory, and model is FM31256S, is used to store operational factor and the relevant parameter that is provided with; The U6 model is that AT24C32N is used to store calibration data; and there is hardware to write preservation wire jumper J1; when the J1 short circuit, could in U6, write data; J1 should be disconnected after the calibration of the alternating voltage of finishing device, direct voltage, humidity makes U6 be in the write-protect state; in order to avoid Single Chip Microcomputer (SCM) program is run and to be flown or single-chip microcomputer will calibrate data rewriting, the reliability of increase device when being disturbed.U24 is a time calendar clock, and model is HT1381, for single-chip microcomputer provides date and time information.
MSP430F449 self has the output of 4 * 40 sections, cooperates with the LCD screen of custom-designed 4 * 32 sections, carries out the demonstration output of metrical information, comprises time, direct voltage, alternating voltage, temperature, humidity and various state information.Simultaneously, select, can adopt GPRS, Ethernet, RS232 mode and main website server to carry out data interaction by wire jumper.Configuration informations such as the IP address of main website, port, communication modes can be provided with by the RS232 interface of MSP430F449.
When device powers on, at first carry out self check, adopt routine inspection mode then, measure also display unit time, 5 groups of direct voltages, 3 groups of alternating voltages, 2 groups of temperature, 1 group of humidity, simultaneously according to the main website IP address, port and the communication modes that are provided with, measurement data is regularly uploaded to the main website server, and accept the instruction of main website server.When measurement data is out-of-limit, active report and alarm code and measurement data.Main station system is except that the warning information window is ejected at the interface of application program, and also the person liable's who is provided with according to terminal installation information sends short message and carries out alarm.
7, Ethernet interface
Adopt ZNE-200T built-in network module, realize the transfer of data between serial ports and the Ethernet.Wire jumper by communication modes is selected, and device can be utilized Ethernet to be connected with the main website server, referring to accompanying drawing 9.
8, GPRS communicating circuit
Referring to accompanying drawing 10, the GPRS module adopts MC55 (a GPRS communication module of Siemens Company), and carries out the selection of communication modes by wire jumper.
9, show circuit and LCD screen
The planning of the display message (Figure 11) of LCD screen, and the built-in segment encode Presentation Function of MSP430F449 has directly been adopted in the display driver loop.
Claims (10)
1, a kind of power environment monitoring terminal comprises single-chip microcomputer, and LCD display and upload the communication module of information to the main website server is characterized in that: also have,
Ac filter rectification and signal conditioning circuit thereof: three-phase alternating current is respectively in turn after LC ∏ mode filter, three-phase bridge rectifier are handled, carry out the amplitude adjustment through instrument transformer and sampling resistor again;
DC filtering and signal conditioning circuit thereof: 5 road direct currents are respectively after capacitive filter is handled, carry out the amplitude adjustment through divider resistance again;
Sample circuit: after single 8 path analoging switch and follower processing, export respectively by the AC and DC signal that above-mentioned signal conditioning circuit comes;
The voltage measurement chip: accept the signal of sample circuit, it is carried out effective value measure, its result exports described single-chip microcomputer to;
Temperature sensor: be connected with single-chip microcomputer;
Humidity sensor: be connected with single-chip microcomputer.
2, according to the described power environment monitoring terminal of claim 1, it is characterized in that: described voltage measurement chip model is CS5460A; Each single phase alternating current (A.C.) filter rectification and signal conditioning circuit thereof consist of: the tap 1 of electric capacity XC11 one end and annular common mode inductance FD1 all is connected to this phase line, after the tap 2 of FD1 is connected to electric capacity XC21 one end, be connected to a phase voltage input of three-phase bridge rectifier again, the other end of XC11 and XC21 all is connected to zero line, the tap 7 of FD1 is connected to zero line, tap 8 is connected to the earthed voltage input of three-phase bridge rectifier, the signal output part of three-phase bridge rectifier is connected to the tap 1 of instrument transformer T3 primary coil, ground connection behind the tap 3 series resistance R31 of T3 primary coil, the tap 2 of T3 secondary coil, be serially connected with sampling resistor R32 between the tap 4, tap 2 is connected to sample circuit;
Each road DC filtering and signal conditioning circuit thereof consist of: direct-flow positive pole ground connection, electric capacity XC1 is serially connected between the direct current positive and negative electrode, is connected to sample circuit behind the direct current negative pole serial connection divider resistance R21.
3, according to the described power environment monitoring terminal of claim 2, it is characterized in that: in described each single phase alternating current (A.C.) filter rectification and the signal conditioning circuit thereof, also have two and be annular common mode inductance FD2, the FD3 that series connection is provided with, the tap 1 of FD2 is connected to the tap 2 of annular common mode inductance FD1, the tap 2 of FD3 is connected to a phase voltage input of three-phase bridge rectifier, and also is serially connected with common mode inductance L12 on the phase voltage output of three-phase bridge rectifier.
4, according to the described power environment monitoring terminal of claim 3, it is characterized in that: the inductance value of described annular common mode inductance FD1, FD2, FD3 is respectively 5mH, 1.5mH, 15mH; The inductance value of common mode inductance L12 is 20mH; Electric capacity XC11, XC21, XC1 are 0.1 μ K/275V; Divider resistance R21 is 120K Ω.
5, according to the described power environment monitoring terminal of claim 4, it is characterized in that: in described each single phase alternating current (A.C.) filter rectification and the signal conditioning circuit thereof, be serially connected with the piezo-resistance MYG1 of lightning protection effect between phase line and the zero line; In each road diameter filtering and the signal conditioning circuit thereof, be serially connected with the piezo-resistance MYG11 of lightning protection effect between the direct current positive and negative electrode.
6, according to the described power environment monitoring terminal of claim 5, it is characterized in that: described sample circuit consists of: the signal from three-phase alternating current is connected to single eight path analoging switch CD4051B inputs respectively, the CD4051B output is connected to 3 pin of follower OP07, the 2 pin ground connection of OP07 are connected to 16 pin of voltage measurement chip CS5460A behind the 6 pin series resistor R26 of OP07; Be connected to single eight path analoging switch CD4051B inputs respectively from galvanic 5 road signals, the CD4051B output is connected to 3 pin of follower OP07, the 2 pin ground connection of OP07, and 6 pin of OP07 are connected to 9 pin of CS5460A.
7, according to the described power environment monitoring terminal of the arbitrary claim of claim 1～6, it is characterized in that: described single-chip microcomputer model is MSP430F449; 5,23,6,7,19 pin of voltage measurement chip CS5460 are connected to 84,96,97,2,95 pin of single-chip microcomputer respectively.
8, according to the described power environment monitoring terminal of claim 7, it is characterized in that: described humidity sensor consists of: transducer HS1101 is serially connected between 6 pin and ground of integrated package 7555, is connected to 85 pin of single-chip microcomputer MSP430F449 behind the 3 pin series resistor R51 of integrated package 7555; The model of temperature sensor is DS18B20, and 2 pin of DS18B20 are connected to 65 pin of single-chip microcomputer MSP430F449.
9, described according to Claim 8 power environment monitoring terminal is characterized in that: described communication module is the built-in network module ZNE-200T that is used to utilize Ethernet to be connected with the main website server, and ZNE-200T is connected with microcontroller serial port.
10, described according to Claim 8 power environment monitoring terminal is characterized in that: described communication module is MC55, and MC55 is connected with single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200651962U CN201290068Y (en) | 2008-09-18 | 2008-09-18 | Terminal for monitoring power supply environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200651962U CN201290068Y (en) | 2008-09-18 | 2008-09-18 | Terminal for monitoring power supply environment |
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| CN201290068Y true CN201290068Y (en) | 2009-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200651962U Expired - Lifetime CN201290068Y (en) | 2008-09-18 | 2008-09-18 | Terminal for monitoring power supply environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212434A (en) * | 2018-11-13 | 2019-01-15 | 乐山有研稀土新材料有限公司 | A kind of high-frequency direct-current switch power supply current-voltage-humiture monitoring device |
| CN113690851A (en) * | 2021-10-25 | 2021-11-23 | 江苏德鲁特电气设备有限公司 | Power supply protection device for communication base station |
-
2008
- 2008-09-18 CN CNU2008200651962U patent/CN201290068Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212434A (en) * | 2018-11-13 | 2019-01-15 | 乐山有研稀土新材料有限公司 | A kind of high-frequency direct-current switch power supply current-voltage-humiture monitoring device |
| CN113690851A (en) * | 2021-10-25 | 2021-11-23 | 江苏德鲁特电气设备有限公司 | Power supply protection device for communication base station |
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Granted publication date: 20090812 |
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| CX01 | Expiry of patent term |