CN203798728U - Portable type sulfur hexafluoride gas detection device - Google Patents
Portable type sulfur hexafluoride gas detection device Download PDFInfo
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- CN203798728U CN203798728U CN201420221390.0U CN201420221390U CN203798728U CN 203798728 U CN203798728 U CN 203798728U CN 201420221390 U CN201420221390 U CN 201420221390U CN 203798728 U CN203798728 U CN 203798728U
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Abstract
The utility model discloses a portable type sulfur hexafluoride gas detection device which comprises a handheld type slave machine and a back-carried master machine. The handheld slave machine comprises a slave machine shell body, a slave machine display circuit and a slave machine switch, and a gas inlet pipe and a gas transmission pipe are connected to the slave machine shell body. The back-carried master machine comprises a master machine shell body, a gas pump, a sulfur hexafluoride sensor, a gas detection circuit, a power supply and a master machine switch. A gas inlet of the gas pump is connected with the gas transmission pipe. The gas detection circuit comprises a micro controller module, a photoelectric isolating circuit which is connected with the micro controller module through a level conversion circuit module and an RS-485 communication circuit which is connected with the photoelectric isolating circuit. The input end of the micro controller module is connected with a keystroke operation circuit. A buzzer alarm circuit and a display interface circuit are connected to the level conversion circuit module. A master machine display circuit is connected to the display interface circuit. The portable type sulfur hexafluoride gas detection device is convenient to carry, high in detection precision, high in work reliability, and capable of effectively reducing leakage of sulfur hexafluoride gas.
Description
Technical field
The utility model belongs to Leakage Gas detection technique field, is specifically related to a kind of Portable sulfur hexafluoride gas pick-up unit.
Background technology
Along with power system device is without the development of oiling, miniaturization, sulfur hexafluoride rely on its superior insulation, can not aged deterioration and the characteristic such as arc extinguishing ability, in global power industry, system, be widely used.Almost become at present middle pressure, high pressure and ultra-high pressure switch in the unique insulation and the arc-extinguishing medium that use.Therefore, its security feature receives much concern.In GB/T8908-1996 " The guide for processing and measuring SF6 gas in power apparatus ", before electrical equipment inflation, must carry out quality testing to sulfur hexafluoride gas, and must carry out quality supervision and management to operating sulfur hexafluoride gas.Special provision in " electrical safe working order " and " sulfur hexafluoride electrical equipment operation, experiment and maintainer's security protection detailed rules and regulations ", the power distribution equipment of sulfur hexafluoride equipment and gas laboratory are housed except need installing sharp draft equipment, sulfur hexafluoride gas leakage warning device also must be installed and must ensure the dense 1000ppm of sulfur hexafluoride gas.Due to reasons such as workmanship and mounting process, seal element are aging, the leakage of sulfur hexafluoride gas is difficult to avoid, and the colorless and odorless toxic gas of this leakage can endanger staff's personal safety and hinder power system security to move reliably.Therefore, the development of sulfur hexafluoride gas leak detection technology to Future Power System and staff's personal safety is most important, definitely can not be ignored.At present, known sulfur hexafluoride measuring method adopts the detection means based on chemical reaction conventionally, need the often chemicals of substitution detector more, its shortcoming is that serviceable life is short, and measuring accuracy is poor, and data read inconvenience, field personnel cannot find the sulfur hexafluoride gas leaking in time, cannot find in time electrical equipment malfunction, cannot safeguard work personnel healthy, also very likely cause great power system security accident.
Utility model content
Technical problem to be solved in the utility model is for above-mentioned deficiency of the prior art, a kind of Portable sulfur hexafluoride gas pick-up unit is provided, it is simple in structure, easy to carry, and real-time is good, accuracy of detection is high, functional reliability is high, can effectively reduce sulfur hexafluoride gas and leak, and finds in time electrical equipment malfunction, safeguard work personnel's is healthy, practical.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of Portable sulfur hexafluoride gas pick-up unit, it is characterized in that: comprise hand-held slave and back of the body back of the body formula main frame, described hand-held slave comprise from engine housing, be arranged on slave enclosure interior and be exposed at slave display circuit and the slave switch in slave housing outer surface, be describedly connected with draft tube and the air shooter being connected with draft tube from engine housing, described back of the body back of the body formula main frame comprises host shell and is arranged on the air pump of host shell inside, sulfur hexafluoride sensor, Detection Circuit and power supply, on described host shell outside surface, be provided with host switch, the air intake opening of described air pump is connected with air shooter, described Detection Circuit comprises micro controller module, the photoelectric isolating circuit joining by level shifting circuit module and micro controller module and the RS-485 telecommunication circuit of joining with photoelectric isolating circuit, described RS-485 telecommunication circuit is all joined with level shifting circuit module and sulfur hexafluoride sensor, the input end of described micro controller module is connected to button operation circuit, in described level shifting circuit module, be connected to buzzer alarm circuit and display interface circuit, on described display interface circuit, be connected to the outer main frame display circuit on host shell outside surface that is exposed at, described slave display circuit and display interface circuit join, described power supply comprises 12V supplying cell, join and for 12V direct current being converted to galvanic the first voltage conversion circuit of 6V by host switch and 12V supplying cell, join and for 12V direct current being converted to the galvanic second voltage change-over circuit of 5V by host switch and 12V supplying cell, with second voltage change-over circuit and for 5V direct current being converted to the galvanic tertiary voltage change-over circuit of 3.3V, the 6V voltage output end of described sulfur hexafluoride sensor and the first voltage conversion circuit joins, described micro controller module and button operation circuit all join with the 3.3V voltage output end of tertiary voltage change-over circuit, described level shifting circuit module and photoelectric isolating circuit all join with the 5V voltage output end of second voltage change-over circuit and the 3.3V voltage output end of tertiary voltage change-over circuit, described RS-485 telecommunication circuit, main frame display circuit, all join with the 5V voltage output end of second voltage change-over circuit with buzzer alarm circuit, described slave display circuit joins by the 5V voltage output end of slave switch and second voltage change-over circuit, on described host shell, be provided with the charging inlet that is used to the charging of 12V supplying cell.
Above-mentioned a kind of Portable sulfur hexafluoride gas pick-up unit, is characterized in that: described micro controller module is mainly made up of single-chip microcomputer MSP430F149.
Above-mentioned a kind of Portable sulfur hexafluoride gas pick-up unit, it is characterized in that: described level shifting circuit module is made up of level transferring chip 74LVC4245, the 1st pin of described level transferring chip 74LVC4245 and the 5V voltage output end of the first voltage conversion circuit join, the 23rd pin of described level transferring chip 74LVC4245 and the 24th pin all join with the 3.3V voltage output end of second voltage change-over circuit, the 2nd pin of described level transferring chip 74LVC4245, the 11st pin, the 12nd pin and the equal ground connection of the 13rd pin, the 20th pin of described level transferring chip 74LVC4245 and the 29th pin of single-chip microcomputer MSP430F149 join, the 19th pin of described level transferring chip 74LVC4245 and the 30th pin of single-chip microcomputer MSP430F149 join, the 18th pin of described level transferring chip 74LVC4245 and the 20th pin of single-chip microcomputer MSP430F149 join, the 17th pin of described level transferring chip 74LVC4245 and the 21st pin of single-chip microcomputer MSP430F149 join, the 16th pin of described level transferring chip 74LVC4245 and the 22nd pin of single-chip microcomputer MSP430F149 join, the 15th pin of described level transferring chip 74LVC4245 and the 23rd pin of single-chip microcomputer MSP430F149 join.
Above-mentioned a kind of Portable sulfur hexafluoride gas pick-up unit, is characterized in that: described photoelectric isolating circuit is photoelectric isolated chip U6, U7 and the U8 of TLP521-1 by model, and resistance R 17, R18, R19, R20, R21 and R22 composition; The 1st pin of described photoelectric isolated chip U6 joins by resistance R 17 and the 3.3V voltage output end of second voltage change-over circuit, the 2nd pin of described photoelectric isolated chip U6 and the 31st pin of single-chip microcomputer MSP430F149 join, the 3rd pin ground connection of described photoelectric isolated chip U6, the 4th pin of described photoelectric isolated chip U6 joins by the 5V voltage output end of resistance R 18 and the first voltage conversion circuit; The 1st pin of described photoelectric isolated chip U7 joins by resistance R 19 and the 3.3V voltage output end of second voltage change-over circuit, the 2nd pin of described photoelectric isolated chip U7 and the 32nd pin of single-chip microcomputer MSP430F149 join, the 3rd pin ground connection of described photoelectric isolated chip U7, the 4th pin of described photoelectric isolated chip U7 joins by the 5V voltage output end of resistance R 20 and the first voltage conversion circuit; The 1st pin of described photoelectric isolated chip U8 joins by the 5V voltage output end of resistance R 21 and the first voltage conversion circuit, the 3rd pin ground connection of described photoelectric isolated chip U8, the 4th pin of described photoelectric isolated chip U8 and the 33rd pin of single-chip microcomputer MSP430F149 join, and join by resistance R 22 and the 3.3V voltage output end of second voltage change-over circuit.
Above-mentioned a kind of Portable sulfur hexafluoride gas pick-up unit, it is characterized in that: described RS-485 telecommunication circuit comprises that model is RS-485 transceiver communication chip SP1 and the SP2 of MAX485, voltage stabilizing diode D4 and D5, inductance L 1 and L2, nonpolar capacitor C 14 and C15, and resistance R 6, R7 and R8, the 1st pin of described RS-485 transceiver communication chip SP1 and the 2nd pin of photoelectric isolated chip U8 join, the 2nd pin of described RS-485 transceiver communication chip SP1 and the 3rd pin all join with the 4th pin of photoelectric isolated chip U6, the 4th pin of described RS-485 transceiver communication chip SP1 and the 4th pin of photoelectric isolated chip U7 join, the 6th pin of described RS-485 transceiver communication chip SP1 and one end of resistance R 7, one end of resistance R 8, one end of one end of nonpolar capacitor C 14 and inductance L 2 joins, the 7th pin of described RS-485 transceiver communication chip SP1 and one end of resistance R 6, the other end of resistance R 7, one end of one end of nonpolar capacitor C 15 and inductance L 1 joins, the 5th pin of described RS-485 transceiver communication chip SP1, the other end of resistance R 8, the equal ground connection of the other end of the other end of nonpolar capacitor C 14 and nonpolar capacitor C 15, the 8th pin of described RS-485 transceiver communication chip SP1 and the other end of resistance R 6 all join with the 5V voltage output end of the first voltage conversion circuit, the negative electrode of the other end of described inductance L 2 and voltage stabilizing diode D5 all joins with the 6th pin of RS-485 transceiver communication chip SP2, the negative electrode of the other end of described inductance L 1 and voltage stabilizing diode D4 all joins with the 7th pin of RS-485 transceiver communication chip SP2, the equal ground connection of anode of the anode of described voltage stabilizing diode D5 and voltage stabilizing diode D4, the 1st pin of described RS-485 transceiver communication chip SP2 and the 4th pin all join with the signal output part SF6_OUT of sulfur hexafluoride sensor, the 2nd pin of described RS-485 transceiver communication chip SP2 and the 3rd pin all join with the 4th pin of level transferring chip 74LVC4245, the 5th pin ground connection of described RS-485 transceiver communication chip SP2, the 8th pin of described RS-485 transceiver communication chip SP2 and the 5V voltage output end of the first voltage conversion circuit join.
Above-mentioned a kind of Portable sulfur hexafluoride gas pick-up unit, it is characterized in that: described button operation circuit is by button S2, S3, S4 and S5, and resistance R 9, R10, R11 and R12 composition, one end of one end of described button S2 and resistance R 9 all joins with the 12nd pin of single-chip microcomputer MSP430F149, one end of one end of described button S3 and resistance R 10 all joins with the 13rd pin of single-chip microcomputer MSP430F149, one end of one end of described button S4 and resistance R 11 all joins with the 14th pin of single-chip microcomputer MSP430F149, one end of one end of described button S5 and resistance R 12 all joins with the 15th pin of single-chip microcomputer MSP430F149, the other end of the other end of described button S2, the other end of button S3, button S4 and the equal ground connection of the other end of button S5, the other end of described resistance R 9, the other end of resistance R 10, the other end of resistance R 11 and the other end of resistance R 12 all join with the 3.3V voltage output end of second voltage change-over circuit.
Above-mentioned a kind of Portable sulfur hexafluoride gas pick-up unit, it is characterized in that: described display interface circuit is made up of the connector J with 4 pins, the 1st pin of described connector J and the 6th pin of level transferring chip 74LVC4245 join, the 2nd pin of described connector J and the 7th pin of level transferring chip 74LVC4245 join, the 3rd pin of described connector J and the 8th pin of level transferring chip 74LVC4245 join, and the 4th pin of described connector J and the 9th pin of level transferring chip 74LVC4245 join.
Above-mentioned a kind of Portable sulfur hexafluoride gas pick-up unit, it is characterized in that: the circuit structure of described main frame display circuit and slave display circuit is identical and include model and be chip U1, U2, U3 and the U4 of M74HC164MIR and the first common anode utmost point charactron DS1, the second common anode utmost point charactron DS2, the 3rd common anode utmost point charactron DS3 and the 4th common anode utmost point charactron DS4, the 1st pin of described chip U1 and the 2nd pin all join with the 1st pin or the 3rd pin of connector J, the 8th pin of described chip U1, the 9th pin and the 14th pin all join with the 5V voltage output end of the first voltage conversion circuit, the 7th pin ground connection of described chip U1, the 3rd pin of described chip U1 joins by the pin a of resistance R 31 and the first common anode utmost point charactron DS1, the 4th pin of described chip U1 joins by the pin b of resistance R 32 and the first common anode utmost point charactron DS1, the 5th pin of described chip U1 joins by the pin c of resistance R 33 and the first common anode utmost point charactron DS1, the 6th pin of described chip U1 joins by the pin d of resistance R 34 and the first common anode utmost point charactron DS1, the 10th pin of described chip U1 joins by the pin e of resistance R 35 and the first common anode utmost point charactron DS1, the 11st pin of described chip U1 joins by the pin f of resistance R 36 and the first common anode utmost point charactron DS1, the 12nd pin of described chip U1 joins by the pin g of resistance R 37 and the first common anode utmost point charactron DS1, the 13rd pin of described chip U1 joins by the pin DP of resistance R 38 and the first common anode utmost point charactron DS1, the common port pin pug of described the first common anode utmost point charactron DS1 and the 5V voltage output end of the first voltage conversion circuit join, the 1st pin of described chip U2 and the 2nd pin all join with the 13rd pin of chip U1, the 8th pin of described chip U2, the 9th pin and the 14th pin all join with the 5V voltage output end of the first voltage conversion circuit, the 7th pin ground connection of described chip U2, the 3rd pin of described chip U2 joins by the pin a of resistance R 41 and the second common anode utmost point charactron DS2, the 4th pin of described chip U2 joins by the pin b of resistance R 42 and the second common anode utmost point charactron DS2, the 5th pin of described chip U2 joins by the pin c of resistance R 43 and the second common anode utmost point charactron DS2, the 6th pin of described chip U2 joins by the pin d of resistance R 44 and the second common anode utmost point charactron DS2, the 10th pin of described chip U2 joins by the pin e of resistance R 45 and the second common anode utmost point charactron DS2, the 11st pin of described chip U2 joins by the pin f of resistance R 46 and the second common anode utmost point charactron DS2, the 12nd pin of described chip U2 joins by the pin g of resistance R 47 and the second common anode utmost point charactron DS2, the 13rd pin of described chip U2 joins by the pin DP of resistance R 48 and the second common anode utmost point charactron DS2, the common port pin pug of described the second common anode utmost point charactron DS2 and the 5V voltage output end of the first voltage conversion circuit join, the 1st pin of described chip U3 and the 2nd pin all join with the 13rd pin of chip U2, the 8th pin of described chip U3, the 9th pin and the 14th pin all join with the 5V voltage output end of the first voltage conversion circuit, the 7th pin ground connection of described chip U3, the 3rd pin of described chip U3 joins by the pin a of resistance R 51 and the 3rd common anode utmost point charactron DS3, the 4th pin of described chip U3 joins by the pin b of resistance R 52 and the 3rd common anode utmost point charactron DS3, the 5th pin of described chip U3 joins by the pin c of resistance R 53 and the 3rd common anode utmost point charactron DS3, the 6th pin of described chip U3 joins by the pin d of resistance R 54 and the 3rd common anode utmost point charactron DS3, the 10th pin of described chip U3 joins by the pin e of resistance R 55 and the 3rd common anode utmost point charactron DS3, the 11st pin of described chip U3 joins by the pin f of resistance R 56 and the 3rd common anode utmost point charactron DS3, the 12nd pin of described chip U3 joins by the pin g of resistance R 57 and the 3rd common anode utmost point charactron DS3, the 13rd pin of described chip U3 joins by the pin DP of resistance R 58 and the 3rd common anode utmost point charactron DS3, the common port pin pug of described the 3rd common anode utmost point charactron DS3 and the 5V voltage output end of the first voltage conversion circuit join, the 1st pin of described chip U4 and the 2nd pin all join with the 13rd pin of chip U3, the 8th pin of described chip U4, the 9th pin and the 14th pin all join with the 5V voltage output end of the first voltage conversion circuit, the 7th pin ground connection of described chip U4, the 3rd pin of described chip U4 joins by the pin a of resistance R 61 and the 4th common anode utmost point charactron DS4, the 4th pin of described chip U4 joins by the pin b of resistance R 62 and the 4th common anode utmost point charactron DS4, the 5th pin of described chip U4 joins by the pin c of resistance R 63 and the 4th common anode utmost point charactron DS4, the 6th pin of described chip U4 joins by the pin d of resistance R 64 and the 4th common anode utmost point charactron DS4, the 10th pin of described chip U4 joins by the pin e of resistance R 65 and the 4th common anode utmost point charactron DS4, the 11st pin of described chip U4 joins by the pin f of resistance R 66 and the 4th common anode utmost point charactron DS4, the 12nd pin of described chip U4 joins by the pin g of resistance R 67 and the 4th common anode utmost point charactron DS4, the 13rd pin of described chip U4 joins by the pin DP of resistance R 68 and the 4th common anode utmost point charactron DS4, the common port pin pug of described the 4th common anode utmost point charactron DS4 and the 5V voltage output end of the first voltage conversion circuit join, the 8th pin of described chip U1, the 8th pin of chip U2, the 8th pin of chip U3 and the 8th pin of chip U4 all join with the 2nd pin or the 4th pin of connector J.
Above-mentioned a kind of Portable sulfur hexafluoride gas pick-up unit, it is characterized in that: described buzzer alarm circuit is made up of resistance R 23 and hummer LS1, the positive pole of described hummer LS1 joins by the 5V voltage output end of resistance R 23 and the first voltage conversion circuit, and the 5th pin of the negative pole of described hummer LS1 and level transferring chip 74LVC4245 joins.
Above-mentioned a kind of Portable sulfur hexafluoride gas pick-up unit, is characterized in that: described sulfur hexafluoride sensor is SM-SF6 infrared-gas sulfur hexafluoride sensor.
The utility model compared with prior art has the following advantages:
1, the utility model is simple in structure, rationally novel in design, by hand-held slave and back of the body back of the body formula main frame are set, can carry easily and the leakage of sulfur hexafluoride gas be detected.
2, real-time of the present utility model is good, accuracy of detection is high, can detect rapidly, exactly the concentration of sulfur hexafluoride gas and show, can effectively reduce sulfur hexafluoride gas leaks, find in time electrical equipment malfunction, safeguard work personnel's is healthy, and provides technique guarantee for electric power enterprise production safety, shorten the time of interruption maintenance, tonifying Qi, saved recondition expense.
3, the utility model is provided with main frame demonstration and slave demonstration simultaneously, detects data and reads convenient and swift.
4, sulfur hexafluoride sensor of the present utility model has adopted SM-SF6 infrared-gas sulfur hexafluoride sensor, have advantages of that volume is little, low in energy consumption, long service life, without often safeguarding; And the utility model is taking RS-485 telecommunication circuit as communication bridge, the Modbus bus of SM-SF6 infrared-gas sulfur hexafluoride sensor and the serial ports of single-chip microcomputer MSP430F149 are communicated, ensure the correct transmission of data in communication process, can not affect communication because of external interference.
5, functional reliability of the present utility model is high, long service life.
6, of the present utility model practical, be convenient to promote the use of.
In sum, the utility model is simple in structure, easy to carry, and real-time is good, and accuracy of detection is high, and functional reliability is high, can effectively reduce sulfur hexafluoride gas and leak, and finds in time electrical equipment malfunction, and safeguard work personnel's is healthy, practical.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is schematic block circuit diagram of the present utility model.
Fig. 3 is the circuit theory diagrams of the utility model micro controller module.
Fig. 4 is the circuit theory diagrams of the utility model level shifting circuit module.
Fig. 5 is the circuit theory diagrams of the utility model photoelectric isolating circuit.
Fig. 6 is the circuit theory diagrams of the utility model RS-485 telecommunication circuit.
Fig. 7 is the circuit theory diagrams of the utility model button operation circuit.
Fig. 8 is the circuit theory diagrams of the utility model display interface circuit.
Fig. 9 is the circuit theory diagrams of the utility model main frame display circuit and slave display circuit.
Figure 10 is the circuit theory diagrams of the utility model buzzer alarm circuit.
Description of reference numerals:
1-from engine housing; 2-slave display circuit; 3-slave switch;
4-draft tube; 5-air shooter; 6-host shell;
7-charging inlet; 8-sulfur hexafluoride sensor; 9-host switch;
10-micro controller module; 11-level shifting circuit module; 12-photoelectric isolating circuit;
13-RS-485 telecommunication circuit; 14-button operation circuit; 15-buzzer alarm circuit;
16-display interface circuit; 17-main frame display circuit; 18-12V supplying cell;
The 19-the first voltage conversion circuit; 20-second voltage change-over circuit;
21-tertiary voltage change-over circuit.
Embodiment
As depicted in figs. 1 and 2, the utility model comprises hand-held slave and back of the body back of the body formula main frame, described hand-held slave comprise from engine housing 1, be arranged on inner from engine housing 1 and be exposed at slave display circuit 2 and the slave switch 3 on slave housing 1 outside surface, be describedly connected with draft tube 4 and the air shooter 5 being connected with draft tube 4 from engine housing 1, described back of the body back of the body formula main frame comprises host shell 6 and is arranged on the air pump of host shell 6 inside, sulfur hexafluoride sensor 8, Detection Circuit and power supply, on described host shell 6 outside surfaces, be provided with host switch 9, the air intake opening of described air pump is connected with air shooter 5, described Detection Circuit comprises micro controller module 10, the photoelectric isolating circuit 12 joining by level shifting circuit module 11 and micro controller module 10 and the RS-485 telecommunication circuit 13 of joining with photoelectric isolating circuit 12, described RS-485 telecommunication circuit 13 is all joined with level shifting circuit module 11 and sulfur hexafluoride sensor 8, the input end of described micro controller module 10 is connected to button operation circuit 14, in described level shifting circuit module 11, be connected to buzzer alarm circuit 15 and display interface circuit 16, on described display interface circuit 16, be connected to the outer main frame display circuit 17 on host shell 6 outside surfaces that is exposed at, described slave display circuit 2 joins with display interface circuit 16, described power supply comprises 12V supplying cell 18, join and for 12V direct current being converted to galvanic the first voltage conversion circuit 19 of 6V by host switch 9 and 12V supplying cell 18, join and for 12V direct current being converted to the galvanic second voltage change-over circuit 20 of 5V by host switch 9 and 12V supplying cell 18, with second voltage change-over circuit 20 and for 5V direct current being converted to the galvanic tertiary voltage change-over circuit 21 of 3.3V, the 6V voltage output end of described sulfur hexafluoride sensor 8 and the first voltage conversion circuit 19 joins, described micro controller module 10 and button operation circuit 14 all join with the 3.3V voltage output end of tertiary voltage change-over circuit 21, described level shifting circuit module 11 and photoelectric isolating circuit 12 all join with the 5V voltage output end of second voltage change-over circuit 20 and the 3.3V voltage output end of tertiary voltage change-over circuit 21, described RS-485 telecommunication circuit 13, main frame display circuit 17, all join with the 5V voltage output end of second voltage change-over circuit 20 with buzzer alarm circuit 15, described slave display circuit 2 joins by slave switch 3 and the 5V voltage output end of second voltage change-over circuit 20, on described host shell 6, be provided with the charging inlet 7 that is used to 12V supplying cell 18 to charge.
As shown in Figure 3, in the present embodiment, described micro controller module 10 is mainly made up of single-chip microcomputer MSP430F149.Single-chip microcomputer MSP430F149's is low in energy consumption, and data processing speed is fast, and integrated than more rich interior peripheral hardware, can meet well user demand.
As shown in Figure 4, in the present embodiment, described level shifting circuit module 11 is made up of level transferring chip 74LVC4245, the 1st pin of described level transferring chip 74LVC4245 and the 5V voltage output end of the first voltage conversion circuit 19 join, the 23rd pin of described level transferring chip 74LVC4245 and the 24th pin all join with the 3.3V voltage output end of second voltage change-over circuit 20, the 2nd pin of described level transferring chip 74LVC4245, the 11st pin, the 12nd pin and the equal ground connection of the 13rd pin, the 20th pin of described level transferring chip 74LVC4245 and the 29th pin of single-chip microcomputer MSP430F149 join, the 19th pin of described level transferring chip 74LVC4245 and the 30th pin of single-chip microcomputer MSP430F149 join, the 18th pin of described level transferring chip 74LVC4245 and the 20th pin of single-chip microcomputer MSP430F149 join, the 17th pin of described level transferring chip 74LVC4245 and the 21st pin of single-chip microcomputer MSP430F149 join, the 16th pin of described level transferring chip 74LVC4245 and the 22nd pin of single-chip microcomputer MSP430F149 join, the 15th pin of described level transferring chip 74LVC4245 and the 23rd pin of single-chip microcomputer MSP430F149 join.
As shown in Figure 5, in the present embodiment, described photoelectric isolating circuit 12 is photoelectric isolated chip U6, U7 and the U8 of TLP521-1 by model, and resistance R 17, R18, R19, R20, R21 and R22 composition; The 1st pin of described photoelectric isolated chip U6 joins by resistance R 17 and the 3.3V voltage output end of second voltage change-over circuit 20, the 2nd pin of described photoelectric isolated chip U6 and the 31st pin of single-chip microcomputer MSP430F149 join, the 3rd pin ground connection of described photoelectric isolated chip U6, the 4th pin of described photoelectric isolated chip U6 joins by the 5V voltage output end of resistance R 18 and the first voltage conversion circuit 19; The 1st pin of described photoelectric isolated chip U7 joins by resistance R 19 and the 3.3V voltage output end of second voltage change-over circuit 20, the 2nd pin of described photoelectric isolated chip U7 and the 32nd pin of single-chip microcomputer MSP430F149 join, the 3rd pin ground connection of described photoelectric isolated chip U7, the 4th pin of described photoelectric isolated chip U7 joins by the 5V voltage output end of resistance R 20 and the first voltage conversion circuit 19; The 1st pin of described photoelectric isolated chip U8 joins by the 5V voltage output end of resistance R 21 and the first voltage conversion circuit 19, the 3rd pin ground connection of described photoelectric isolated chip U8, the 4th pin of described photoelectric isolated chip U8 and the 33rd pin of single-chip microcomputer MSP430F149 join, and join by resistance R 22 and the 3.3V voltage output end of second voltage change-over circuit 20.
As shown in Figure 6, in the present embodiment, described RS-485 telecommunication circuit 13 comprises that model is RS-485 transceiver communication chip SP1 and the SP2 of MAX485, voltage stabilizing diode D4 and D5, inductance L 1 and L2, nonpolar capacitor C 14 and C15, and resistance R 6, R7 and R8, the 1st pin of described RS-485 transceiver communication chip SP1 and the 2nd pin of photoelectric isolated chip U8 join, the 2nd pin of described RS-485 transceiver communication chip SP1 and the 3rd pin all join with the 4th pin of photoelectric isolated chip U6, the 4th pin of described RS-485 transceiver communication chip SP1 and the 4th pin of photoelectric isolated chip U7 join, the 6th pin of described RS-485 transceiver communication chip SP1 and one end of resistance R 7, one end of resistance R 8, one end of one end of nonpolar capacitor C 14 and inductance L 2 joins, the 7th pin of described RS-485 transceiver communication chip SP1 and one end of resistance R 6, the other end of resistance R 7, one end of one end of nonpolar capacitor C 15 and inductance L 1 joins, the 5th pin of described RS-485 transceiver communication chip SP1, the other end of resistance R 8, the equal ground connection of the other end of the other end of nonpolar capacitor C 14 and nonpolar capacitor C 15, the 8th pin of described RS-485 transceiver communication chip SP1 and the other end of resistance R 6 all join with the 5V voltage output end of the first voltage conversion circuit 19, the negative electrode of the other end of described inductance L 2 and voltage stabilizing diode D5 all joins with the 6th pin of RS-485 transceiver communication chip SP2, the negative electrode of the other end of described inductance L 1 and voltage stabilizing diode D4 all joins with the 7th pin of RS-485 transceiver communication chip SP2, the equal ground connection of anode of the anode of described voltage stabilizing diode D5 and voltage stabilizing diode D4, the 1st pin of described RS-485 transceiver communication chip SP2 and the 4th pin all join with the signal output part SF6_OUT of sulfur hexafluoride sensor 8, the 2nd pin of described RS-485 transceiver communication chip SP2 and the 3rd pin all join with the 4th pin of level transferring chip 74LVC4245, the 5th pin ground connection of described RS-485 transceiver communication chip SP2, the 8th pin of described RS-485 transceiver communication chip SP2 and the 5V voltage output end of the first voltage conversion circuit 19 join.
As shown in Figure 7, in the present embodiment, described button operation circuit 14 is by button S2, S3, S4 and S5, and resistance R 9, R10, R11 and R12 composition, one end of one end of described button S2 and resistance R 9 all joins with the 12nd pin of single-chip microcomputer MSP430F149, one end of one end of described button S3 and resistance R 10 all joins with the 13rd pin of single-chip microcomputer MSP430F149, one end of one end of described button S4 and resistance R 11 all joins with the 14th pin of single-chip microcomputer MSP430F149, one end of one end of described button S5 and resistance R 12 all joins with the 15th pin of single-chip microcomputer MSP430F149, the other end of the other end of described button S2, the other end of button S3, button S4 and the equal ground connection of the other end of button S5, the other end of described resistance R 9, the other end of resistance R 10, the other end of resistance R 11 and the other end of resistance R 12 all join with the 3.3V voltage output end of second voltage change-over circuit 20.
As shown in Figure 8, in the present embodiment, described display interface circuit 16 is made up of the connector J with 4 pins, the 1st pin of described connector J and the 6th pin of level transferring chip 74LVC4245 join, the 2nd pin of described connector J and the 7th pin of level transferring chip 74LVC4245 join, the 3rd pin of described connector J and the 8th pin of level transferring chip 74LVC4245 join, and the 4th pin of described connector J and the 9th pin of level transferring chip 74LVC4245 join.
As shown in Figure 9, in the present embodiment, the circuit structure of described main frame display circuit 17 and slave display circuit 2 is identical and include model and be chip U1, U2, U3 and the U4 of M74HC164MIR and the first common anode utmost point charactron DS1, the second common anode utmost point charactron DS2, the 3rd common anode utmost point charactron DS3 and the 4th common anode utmost point charactron DS4, the 1st pin of described chip U1 and the 2nd pin all join with the 1st pin or the 3rd pin of connector J, and (when for main frame display circuit 17, the 1st pin of described chip U1 and the 2nd pin all join with the 1st pin of connector J, in the time being slave display circuit 2, the 1st pin of described chip U1 and the 2nd pin all join with the 3rd pin of connector J), the 8th pin of described chip U1, the 9th pin and the 14th pin all join with the 5V voltage output end of the first voltage conversion circuit 19, the 7th pin ground connection of described chip U1, the 3rd pin of described chip U1 joins by the pin a of resistance R 31 and the first common anode utmost point charactron DS1, the 4th pin of described chip U1 joins by the pin b of resistance R 32 and the first common anode utmost point charactron DS1, the 5th pin of described chip U1 joins by the pin c of resistance R 33 and the first common anode utmost point charactron DS1, the 6th pin of described chip U1 joins by the pin d of resistance R 34 and the first common anode utmost point charactron DS1, the 10th pin of described chip U1 joins by the pin e of resistance R 35 and the first common anode utmost point charactron DS1, the 11st pin of described chip U1 joins by the pin f of resistance R 36 and the first common anode utmost point charactron DS1, the 12nd pin of described chip U1 joins by the pin g of resistance R 37 and the first common anode utmost point charactron DS1, the 13rd pin of described chip U1 joins by the pin DP of resistance R 38 and the first common anode utmost point charactron DS1, described the first common port pin pug of common anode utmost point charactron DS1 and the 5V voltage output end of the first voltage conversion circuit 19 join, the 1st pin of described chip U2 and the 2nd pin all join with the 13rd pin of chip U1, the 8th pin of described chip U2, the 9th pin and the 14th pin all join with the 5V voltage output end of the first voltage conversion circuit 19, the 7th pin ground connection of described chip U2, the 3rd pin of described chip U2 joins by the pin a of resistance R 41 and the second common anode utmost point charactron DS2, the 4th pin of described chip U2 joins by the pin b of resistance R 42 and the second common anode utmost point charactron DS2, the 5th pin of described chip U2 joins by the pin c of resistance R 43 and the second common anode utmost point charactron DS2, the 6th pin of described chip U2 joins by the pin d of resistance R 44 and the second common anode utmost point charactron DS2, the 10th pin of described chip U2 joins by the pin e of resistance R 45 and the second common anode utmost point charactron DS2, the 11st pin of described chip U2 joins by the pin f of resistance R 46 and the second common anode utmost point charactron DS2, the 12nd pin of described chip U2 joins by the pin g of resistance R 47 and the second common anode utmost point charactron DS2, the 13rd pin of described chip U2 joins by the pin DP of resistance R 48 and the second common anode utmost point charactron DS2, described the second common port pin pug of common anode utmost point charactron DS2 and the 5V voltage output end of the first voltage conversion circuit 19 join, the 1st pin of described chip U3 and the 2nd pin all join with the 13rd pin of chip U2, the 8th pin of described chip U3, the 9th pin and the 14th pin all join with the 5V voltage output end of the first voltage conversion circuit 19, the 7th pin ground connection of described chip U3, the 3rd pin of described chip U3 joins by the pin a of resistance R 51 and the 3rd common anode utmost point charactron DS3, the 4th pin of described chip U3 joins by the pin b of resistance R 52 and the 3rd common anode utmost point charactron DS3, the 5th pin of described chip U3 joins by the pin c of resistance R 53 and the 3rd common anode utmost point charactron DS3, the 6th pin of described chip U3 joins by the pin d of resistance R 54 and the 3rd common anode utmost point charactron DS3, the 10th pin of described chip U3 joins by the pin e of resistance R 55 and the 3rd common anode utmost point charactron DS3, the 11st pin of described chip U3 joins by the pin f of resistance R 56 and the 3rd common anode utmost point charactron DS3, the 12nd pin of described chip U3 joins by the pin g of resistance R 57 and the 3rd common anode utmost point charactron DS3, the 13rd pin of described chip U3 joins by the pin DP of resistance R 58 and the 3rd common anode utmost point charactron DS3, described the 3rd common port pin pug of common anode utmost point charactron DS3 and the 5V voltage output end of the first voltage conversion circuit 19 join, the 1st pin of described chip U4 and the 2nd pin all join with the 13rd pin of chip U3, the 8th pin of described chip U4, the 9th pin and the 14th pin all join with the 5V voltage output end of the first voltage conversion circuit 19, the 7th pin ground connection of described chip U4, the 3rd pin of described chip U4 joins by the pin a of resistance R 61 and the 4th common anode utmost point charactron DS4, the 4th pin of described chip U4 joins by the pin b of resistance R 62 and the 4th common anode utmost point charactron DS4, the 5th pin of described chip U4 joins by the pin c of resistance R 63 and the 4th common anode utmost point charactron DS4, the 6th pin of described chip U4 joins by the pin d of resistance R 64 and the 4th common anode utmost point charactron DS4, the 10th pin of described chip U4 joins by the pin e of resistance R 65 and the 4th common anode utmost point charactron DS4, the 11st pin of described chip U4 joins by the pin f of resistance R 66 and the 4th common anode utmost point charactron DS4, the 12nd pin of described chip U4 joins by the pin g of resistance R 67 and the 4th common anode utmost point charactron DS4, the 13rd pin of described chip U4 joins by the pin DP of resistance R 68 and the 4th common anode utmost point charactron DS4, described the 4th common port pin pug of common anode utmost point charactron DS4 and the 5V voltage output end of the first voltage conversion circuit 19 join, the 8th pin of described chip U1, the 8th pin of chip U2, the 8th pin of chip U3 and the 8th pin of chip U4 all join with the 2nd pin or the 4th pin of connector J, and (when for main frame display circuit 17, the 8th pin of described chip U1, the 8th pin of chip U2, the 8th pin of chip U3 and the 8th pin of chip U4 all join with the 2nd pin of connector J, in the time being slave display circuit 2, the 8th pin of described chip U1, the 8th pin of chip U2, the 8th pin of chip U3 and the 8th pin of chip U4 all join with the 4th pin of connector J).
As shown in figure 10, in the present embodiment, described buzzer alarm circuit 15 is made up of resistance R 23 and hummer LS1, the positive pole of described hummer LS1 joins by the 5V voltage output end of resistance R 23 and the first voltage conversion circuit 19, and the 5th pin of the negative pole of described hummer LS1 and level transferring chip 74LVC4245 joins.
In the present embodiment, described sulfur hexafluoride sensor 8 is SM-SF6 infrared-gas sulfur hexafluoride sensor.SM-SF6 infrared-gas sulfur hexafluoride sensor is realized based on twin-beam dual wavelength Infrared survey technology and high accuracy number treatment technology, measurement range is 0～1000ppm, and precision is higher, digital signal output, meet Modbus agreement, storage temperature-25 are to 60 degrees Celsius; The principle of this sensor has been compared following advantage with galvanochemistry with negative corona discharge principle: 1. infrared spectrum principle of absorption (NDIR), and reaction velocity is very fast, does not need to carry out preheating; 2. dual wavelength, band temperature compensation; 3 high reliability, in testing process not can with other incoherent γ-ray emission cross reactions, avoided interference; Life-span long, generally can reach more than 10 years; 5. there is higher cost performance, saved after-sales service expense compared with electrochemical sensor; 6. can export digital quantity and analog quantity; In addition, this sensor, compared with thermal conduction principle, has volume little, and low-power consumption can powered battery, without huge heating system, and 1 year above calibration cycle, the advantage of Maintenance free.
The utility model is taking RS-485 telecommunication circuit 13 as communication bridge, the Modbus bus of SM-SF6 infrared-gas sulfur hexafluoride sensor and the serial ports of single-chip microcomputer MSP430F149 are communicated, ensure the correct transmission of data in communication process, can not affect communication because of external interference; And Modbus agreement adopt be the communication mode of unibus, greatly reduced the wiring number of hardware in communication process, avoided the too much I/O mouth resource that takies single-chip microcomputer MSP430F149.
When the utility model uses, staff carries on the back back of the body formula main frame at back, and by hand held hand-held slave, opens host switch 9 and slave switch 3, in the time that staff advances to the place of sulfur hexafluoride gas leakage, sulfur hexafluoride gas is under the getter action of described air pump, via draft tube 4, air shooter 5 and described air pump enter host shell 6 inside, sulfur hexafluoride sensor 8 detects and detected sulfur hexafluoride gas concentration signal is passed through to RS-485 telecommunication circuit 13 entering the sulfur hexafluoride gas concentration of host shell 6 inside, photoelectric isolating circuit 12 and level shifting circuit module 11 are transferred to micro controller module 10, main frame display circuit 17 and slave display circuit 2 show in real time to sulfur hexafluoride gas concentration, check for staff, simultaneously, the sulfur hexafluoride gas concentration signal that micro controller module 10 is received is compared with the sulfur hexafluoride gas concentration alarm threshold value arranging by operation push-button function circuit 14 in advance, in the time that sulfur hexafluoride gas concentration exceedes sulfur hexafluoride gas concentration alarm threshold value, micro controller module 10 is controlled buzzer alarm circuit 15 alerting signal of sounding, remind staff leave scene or take emergency measures as early as possible.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every any simple modification of above embodiment being done according to the utility model technical spirit, change and equivalent structure change, and all still belong in the protection domain of technical solutions of the utility model.
Claims (10)
1. a Portable sulfur hexafluoride gas pick-up unit, it is characterized in that: comprise hand-held slave and back of the body back of the body formula main frame, described hand-held slave comprise from engine housing (1), be arranged on inner from engine housing (1) and be exposed at slave display circuit (2) and the slave switch (3) on slave housing (1) outside surface, be describedly connected with draft tube (4) and the air shooter (5) being connected with draft tube (4) from engine housing (1); described back of the body back of the body formula main frame comprises host shell (6) and is arranged on the inner air pump of host shell (6), sulfur hexafluoride sensor (8), Detection Circuit and power supply, on described host shell (6) outside surface, be provided with host switch (9), the air intake opening of described air pump is connected with air shooter (5), described Detection Circuit comprises micro controller module (10), the photoelectric isolating circuit (12) joining by level shifting circuit module (11) and micro controller module (10) and the RS-485 telecommunication circuit (13) of joining with photoelectric isolating circuit (12), described RS-485 telecommunication circuit (13) is all joined with level shifting circuit module (11) and sulfur hexafluoride sensor (8), the input end of described micro controller module (10) is connected to button operation circuit (14), in described level shifting circuit module (11), be connected to buzzer alarm circuit (15) and display interface circuit (16), on described display interface circuit (16), be connected to the outer main frame display circuit (17) on host shell (6) outside surface that is exposed at, described slave display circuit (2) joins with display interface circuit (16), described power supply comprises 12V supplying cell (18), join and for 12V direct current being converted to galvanic the first voltage conversion circuit of 6V (19) by host switch (9) and 12V supplying cell (18), join and for 12V direct current being converted to the galvanic second voltage change-over circuit of 5V (20) by host switch (9) and 12V supplying cell (18), with second voltage change-over circuit (20) and for 5V direct current being converted to the galvanic tertiary voltage change-over circuit of 3.3V (21), described sulfur hexafluoride sensor (8) joins with the 6V voltage output end of the first voltage conversion circuit (19), described micro controller module (10) and button operation circuit (14) all join with the 3.3V voltage output end of tertiary voltage change-over circuit (21), described level shifting circuit module (11) and photoelectric isolating circuit (12) all join with the 5V voltage output end of second voltage change-over circuit (20) and the 3.3V voltage output end of tertiary voltage change-over circuit (21), described RS-485 telecommunication circuit (13), main frame display circuit (17), and buzzer alarm circuit (15) all joins with the 5V voltage output end of second voltage change-over circuit (20), described slave display circuit (2) joins by slave switch (3) and the 5V voltage output end of second voltage change-over circuit (20), on described host shell (6), be provided with the charging inlet (7) that is used to 12V supplying cell (18) charging.
2. according to a kind of Portable sulfur hexafluoride gas pick-up unit claimed in claim 1, it is characterized in that: described micro controller module (10) is mainly made up of single-chip microcomputer MSP430F149.
3. according to a kind of Portable sulfur hexafluoride gas pick-up unit claimed in claim 2, it is characterized in that: described level shifting circuit module (11) is made up of level transferring chip 74LVC4245, the 1st pin of described level transferring chip 74LVC4245 and the 5V voltage output end of the first voltage conversion circuit (19) join, the 23rd pin of described level transferring chip 74LVC4245 and the 24th pin all join with the 3.3V voltage output end of second voltage change-over circuit (20), the 2nd pin of described level transferring chip 74LVC4245, the 11st pin, the 12nd pin and the equal ground connection of the 13rd pin, the 20th pin of described level transferring chip 74LVC4245 and the 29th pin of single-chip microcomputer MSP430F149 join, the 19th pin of described level transferring chip 74LVC4245 and the 30th pin of single-chip microcomputer MSP430F149 join, the 18th pin of described level transferring chip 74LVC4245 and the 20th pin of single-chip microcomputer MSP430F149 join, the 17th pin of described level transferring chip 74LVC4245 and the 21st pin of single-chip microcomputer MSP430F149 join, the 16th pin of described level transferring chip 74LVC4245 and the 22nd pin of single-chip microcomputer MSP430F149 join, the 15th pin of described level transferring chip 74LVC4245 and the 23rd pin of single-chip microcomputer MSP430F149 join.
4. according to a kind of Portable sulfur hexafluoride gas pick-up unit claimed in claim 3, it is characterized in that: described photoelectric isolating circuit (12) is photoelectric isolated chip U6, U7 and the U8 of TLP521-1 by model, and resistance R 17, R18, R19, R20, R21 and R22 composition; The 1st pin of described photoelectric isolated chip U6 joins by resistance R 17 and the 3.3V voltage output end of second voltage change-over circuit (20), the 2nd pin of described photoelectric isolated chip U6 and the 31st pin of single-chip microcomputer MSP430F149 join, the 3rd pin ground connection of described photoelectric isolated chip U6, the 4th pin of described photoelectric isolated chip U6 joins by the 5V voltage output end of resistance R 18 and the first voltage conversion circuit (19); The 1st pin of described photoelectric isolated chip U7 joins by resistance R 19 and the 3.3V voltage output end of second voltage change-over circuit (20), the 2nd pin of described photoelectric isolated chip U7 and the 32nd pin of single-chip microcomputer MSP430F149 join, the 3rd pin ground connection of described photoelectric isolated chip U7, the 4th pin of described photoelectric isolated chip U7 joins by the 5V voltage output end of resistance R 20 and the first voltage conversion circuit (19); The 1st pin of described photoelectric isolated chip U8 joins by the 5V voltage output end of resistance R 21 and the first voltage conversion circuit (19), the 3rd pin ground connection of described photoelectric isolated chip U8, the 4th pin of described photoelectric isolated chip U8 and the 33rd pin of single-chip microcomputer MSP430F149 join, and join by resistance R 22 and the 3.3V voltage output end of second voltage change-over circuit (20).
5. according to a kind of Portable sulfur hexafluoride gas pick-up unit claimed in claim 4, it is characterized in that: described RS-485 telecommunication circuit (13) comprises that model is RS-485 transceiver communication chip SP1 and the SP2 of MAX485, voltage stabilizing diode D4 and D5, inductance L 1 and L2, nonpolar capacitor C 14 and C15, and resistance R 6, R7 and R8, the 1st pin of described RS-485 transceiver communication chip SP1 and the 2nd pin of photoelectric isolated chip U8 join, the 2nd pin of described RS-485 transceiver communication chip SP1 and the 3rd pin all join with the 4th pin of photoelectric isolated chip U6, the 4th pin of described RS-485 transceiver communication chip SP1 and the 4th pin of photoelectric isolated chip U7 join, the 6th pin of described RS-485 transceiver communication chip SP1 and one end of resistance R 7, one end of resistance R 8, one end of one end of nonpolar capacitor C 14 and inductance L 2 joins, the 7th pin of described RS-485 transceiver communication chip SP1 and one end of resistance R 6, the other end of resistance R 7, one end of one end of nonpolar capacitor C 15 and inductance L 1 joins, the 5th pin of described RS-485 transceiver communication chip SP1, the other end of resistance R 8, the equal ground connection of the other end of the other end of nonpolar capacitor C 14 and nonpolar capacitor C 15, the 8th pin of described RS-485 transceiver communication chip SP1 and the other end of resistance R 6 all join with the 5V voltage output end of the first voltage conversion circuit (19), the negative electrode of the other end of described inductance L 2 and voltage stabilizing diode D5 all joins with the 6th pin of RS-485 transceiver communication chip SP2, the negative electrode of the other end of described inductance L 1 and voltage stabilizing diode D4 all joins with the 7th pin of RS-485 transceiver communication chip SP2, the equal ground connection of anode of the anode of described voltage stabilizing diode D5 and voltage stabilizing diode D4, the 1st pin of described RS-485 transceiver communication chip SP2 and the 4th pin all join with the signal output part SF6_OUT of sulfur hexafluoride sensor (8), the 2nd pin of described RS-485 transceiver communication chip SP2 and the 3rd pin all join with the 4th pin of level transferring chip 74LVC4245, the 5th pin ground connection of described RS-485 transceiver communication chip SP2, the 8th pin of described RS-485 transceiver communication chip SP2 and the 5V voltage output end of the first voltage conversion circuit (19) join.
6. according to a kind of Portable sulfur hexafluoride gas pick-up unit claimed in claim 2, it is characterized in that: described button operation circuit (14) is by button S2, S3, S4 and S5, and resistance R 9, R10, R11 and R12 composition, one end of one end of described button S2 and resistance R 9 all joins with the 12nd pin of single-chip microcomputer MSP430F149, one end of one end of described button S3 and resistance R 10 all joins with the 13rd pin of single-chip microcomputer MSP430F149, one end of one end of described button S4 and resistance R 11 all joins with the 14th pin of single-chip microcomputer MSP430F149, one end of one end of described button S5 and resistance R 12 all joins with the 15th pin of single-chip microcomputer MSP430F149, the other end of the other end of described button S2, the other end of button S3, button S4 and the equal ground connection of the other end of button S5, the other end of described resistance R 9, the other end of resistance R 10, the other end of resistance R 11 and the other end of resistance R 12 all join with the 3.3V voltage output end of second voltage change-over circuit (20).
7. according to a kind of Portable sulfur hexafluoride gas pick-up unit claimed in claim 3, it is characterized in that: described display interface circuit (16) is made up of the connector J with 4 pins, the 1st pin of described connector J and the 6th pin of level transferring chip 74LVC4245 join, the 2nd pin of described connector J and the 7th pin of level transferring chip 74LVC4245 join, the 3rd pin of described connector J and the 8th pin of level transferring chip 74LVC4245 join, and the 4th pin of described connector J and the 9th pin of level transferring chip 74LVC4245 join.
8. according to a kind of Portable sulfur hexafluoride gas pick-up unit claimed in claim 7, it is characterized in that: the circuit structure of described main frame display circuit (17) and slave display circuit (2) is identical and include model and be chip U1, U2, U3 and the U4 of M74HC164MIR and the first common anode utmost point charactron DS1, the second common anode utmost point charactron DS2, the 3rd common anode utmost point charactron DS3 and the 4th common anode utmost point charactron DS4, the 1st pin of described chip U1 and the 2nd pin all join with the 1st pin or the 3rd pin of connector J, the 8th pin of described chip U1, the 9th pin and the 14th pin all join with the 5V voltage output end of the first voltage conversion circuit (19), the 7th pin ground connection of described chip U1, the 3rd pin of described chip U1 joins by the pin a of resistance R 31 and the first common anode utmost point charactron DS1, the 4th pin of described chip U1 joins by the pin b of resistance R 32 and the first common anode utmost point charactron DS1, the 5th pin of described chip U1 joins by the pin c of resistance R 33 and the first common anode utmost point charactron DS1, the 6th pin of described chip U1 joins by the pin d of resistance R 34 and the first common anode utmost point charactron DS1, the 10th pin of described chip U1 joins by the pin e of resistance R 35 and the first common anode utmost point charactron DS1, the 11st pin of described chip U1 joins by the pin f of resistance R 36 and the first common anode utmost point charactron DS1, the 12nd pin of described chip U1 joins by the pin g of resistance R 37 and the first common anode utmost point charactron DS1, the 13rd pin of described chip U1 joins by the pin DP of resistance R 38 and the first common anode utmost point charactron DS1, described the first common port pin pug of common anode utmost point charactron DS1 and the 5V voltage output end of the first voltage conversion circuit (19) join, the 1st pin of described chip U2 and the 2nd pin all join with the 13rd pin of chip U1, the 8th pin of described chip U2, the 9th pin and the 14th pin all join with the 5V voltage output end of the first voltage conversion circuit (19), the 7th pin ground connection of described chip U2, the 3rd pin of described chip U2 joins by the pin a of resistance R 41 and the second common anode utmost point charactron DS2, the 4th pin of described chip U2 joins by the pin b of resistance R 42 and the second common anode utmost point charactron DS2, the 5th pin of described chip U2 joins by the pin c of resistance R 43 and the second common anode utmost point charactron DS2, the 6th pin of described chip U2 joins by the pin d of resistance R 44 and the second common anode utmost point charactron DS2, the 10th pin of described chip U2 joins by the pin e of resistance R 45 and the second common anode utmost point charactron DS2, the 11st pin of described chip U2 joins by the pin f of resistance R 46 and the second common anode utmost point charactron DS2, the 12nd pin of described chip U2 joins by the pin g of resistance R 47 and the second common anode utmost point charactron DS2, the 13rd pin of described chip U2 joins by the pin DP of resistance R 48 and the second common anode utmost point charactron DS2, described the second common port pin pug of common anode utmost point charactron DS2 and the 5V voltage output end of the first voltage conversion circuit (19) join, the 1st pin of described chip U3 and the 2nd pin all join with the 13rd pin of chip U2, the 8th pin of described chip U3, the 9th pin and the 14th pin all join with the 5V voltage output end of the first voltage conversion circuit (19), the 7th pin ground connection of described chip U3, the 3rd pin of described chip U3 joins by the pin a of resistance R 51 and the 3rd common anode utmost point charactron DS3, the 4th pin of described chip U3 joins by the pin b of resistance R 52 and the 3rd common anode utmost point charactron DS3, the 5th pin of described chip U3 joins by the pin c of resistance R 53 and the 3rd common anode utmost point charactron DS3, the 6th pin of described chip U3 joins by the pin d of resistance R 54 and the 3rd common anode utmost point charactron DS3, the 10th pin of described chip U3 joins by the pin e of resistance R 55 and the 3rd common anode utmost point charactron DS3, the 11st pin of described chip U3 joins by the pin f of resistance R 56 and the 3rd common anode utmost point charactron DS3, the 12nd pin of described chip U3 joins by the pin g of resistance R 57 and the 3rd common anode utmost point charactron DS3, the 13rd pin of described chip U3 joins by the pin DP of resistance R 58 and the 3rd common anode utmost point charactron DS3, described the 3rd common port pin pug of common anode utmost point charactron DS3 and the 5V voltage output end of the first voltage conversion circuit (19) join, the 1st pin of described chip U4 and the 2nd pin all join with the 13rd pin of chip U3, the 8th pin of described chip U4, the 9th pin and the 14th pin all join with the 5V voltage output end of the first voltage conversion circuit (19), the 7th pin ground connection of described chip U4, the 3rd pin of described chip U4 joins by the pin a of resistance R 61 and the 4th common anode utmost point charactron DS4, the 4th pin of described chip U4 joins by the pin b of resistance R 62 and the 4th common anode utmost point charactron DS4, the 5th pin of described chip U4 joins by the pin c of resistance R 63 and the 4th common anode utmost point charactron DS4, the 6th pin of described chip U4 joins by the pin d of resistance R 64 and the 4th common anode utmost point charactron DS4, the 10th pin of described chip U4 joins by the pin e of resistance R 65 and the 4th common anode utmost point charactron DS4, the 11st pin of described chip U4 joins by the pin f of resistance R 66 and the 4th common anode utmost point charactron DS4, the 12nd pin of described chip U4 joins by the pin g of resistance R 67 and the 4th common anode utmost point charactron DS4, the 13rd pin of described chip U4 joins by the pin DP of resistance R 68 and the 4th common anode utmost point charactron DS4, described the 4th common port pin pug of common anode utmost point charactron DS4 and the 5V voltage output end of the first voltage conversion circuit (19) join, the 8th pin of described chip U1, the 8th pin of chip U2, the 8th pin of chip U3 and the 8th pin of chip U4 all join with the 2nd pin or the 4th pin of connector J.
9. according to a kind of Portable sulfur hexafluoride gas pick-up unit claimed in claim 3, it is characterized in that: described buzzer alarm circuit (15) is made up of resistance R 23 and hummer LS1, the positive pole of described hummer LS1 joins by the 5V voltage output end of resistance R 23 and the first voltage conversion circuit (19), and the 5th pin of the negative pole of described hummer LS1 and level transferring chip 74LVC4245 joins.
10. according to a kind of Portable sulfur hexafluoride gas pick-up unit claimed in claim 1, it is characterized in that: described sulfur hexafluoride sensor (8) is SM-SF6 infrared-gas sulfur hexafluoride sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420221390.0U CN203798728U (en) | 2014-04-30 | 2014-04-30 | Portable type sulfur hexafluoride gas detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420221390.0U CN203798728U (en) | 2014-04-30 | 2014-04-30 | Portable type sulfur hexafluoride gas detection device |
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| Publication Number | Publication Date |
|---|---|
| CN203798728U true CN203798728U (en) | 2014-08-27 |
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| CN201420221390.0U Expired - Fee Related CN203798728U (en) | 2014-04-30 | 2014-04-30 | Portable type sulfur hexafluoride gas detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807957A (en) * | 2015-03-23 | 2015-07-29 | 江苏省电力公司检修分公司 | Portable SF6 gas characteristic index monitoring device |
| CN111579726A (en) * | 2020-06-05 | 2020-08-25 | 广东电网有限责任公司广州供电局 | Multifunctional sensing detection device |
-
2014
- 2014-04-30 CN CN201420221390.0U patent/CN203798728U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807957A (en) * | 2015-03-23 | 2015-07-29 | 江苏省电力公司检修分公司 | Portable SF6 gas characteristic index monitoring device |
| CN111579726A (en) * | 2020-06-05 | 2020-08-25 | 广东电网有限责任公司广州供电局 | Multifunctional sensing detection device |
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