CN205642725U - Resistance vacuum transmitter - Google Patents
Resistance vacuum transmitter Download PDFInfo
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- CN205642725U CN205642725U CN201620176232.7U CN201620176232U CN205642725U CN 205642725 U CN205642725 U CN 205642725U CN 201620176232 U CN201620176232 U CN 201620176232U CN 205642725 U CN205642725 U CN 205642725U
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Abstract
The utility model discloses a resistance vacuum transmitter, it includes: regulate in the resistance vacuum, bridge unit, amplification device, AD analog/digital device, power supply unit, micromonitor system, display device, the bridge unit is regulated with the resistance vacuum and is connected, amplification device is connected with bridge unit and AD analog/digital device respectively for transmit to AD analog/digital device after enlargeing the analog signal of bridge unit output, AD analog/digital device is connected with micromonitor system for become data signal to the analog signal transition of amplification device output, micromonitor system is connected with display device, be used for with after handling, the data signal of AD analog/digital device output exports the vacuum of display device in order to show the test to, display device includes charactron and display chip. Resistance vacuum transmitter small, light weight. The linear control of analog output signal is better, when the user takes analog signal, the current vacuum of reflection that can be accurate, signal that micromonitor system collected according to disconnected coupling device can be judged the disconnected coupling state that whether is in and show through the number pipe, bring very big convenience for user's use.
Description
Technical field
This utility model relates to technical field of measuring equipment, more particularly, it relates to a kind of vacuum measuring device.
Background technology
Resistance vacuum transmitter is a kind of vacuum measurement instrument, has stability high in the range of it is measured, and measures accurately, can measure continuously, and service life, the feature such as length, was widely used in the fields such as Aeronautics and Astronautics, nuclear energy, electronics and electrical equipment manufacture.
There are the following problems for existing resistance vacuum transmitter: one, vacuum probe and the measuring instrument of existing resistance vacuum transmitter is to separate, it is connected with cable between the two, cause measuring instrument volume bigger, weight is bigger, use in little space is restricted, it is impossible to meet some fields having higher requirements space and weight；Two, existing resistance vacuum transmitter analog signal output Linear Control is bad, and user takes analogue signal can not reflect current vacuum level accurately.Three, existing resistance vacuum transmitter does not break coupling function, and user can not judge that resistance vacuum transmitter is shown that current vacuum level and still regulates the worst or be not switched under vacuum conditions.
Utility model content
In view of this, this utility model provides a kind of resistance vacuum transmitter, comprising: resistance vacuum is regulated, bridge unit, amplifying device, A/D analog-digital commutator, supply unit, micromonitor system, display device；
Described bridge unit is regulated with resistance vacuum and is connected, in order to regulate the operating current providing stable to resistance vacuum；
Described amplifying device is connected with bridge unit and A/D analog-digital commutator respectively, and the analogue signal in order to bridge unit is exported is transmitted to A/D analog-digital commutator after amplifying；
Described A/D analog-digital commutator is connected with micromonitor system, is converted into digital signal in order to the analogue signal that amplifying device is exported；
Described micromonitor system is connected with display device, in order to export the vacuum tested with display to display device after being processed by the digital signal that described A/D analog-digital commutator exports；
Described display device includes charactron and display chip.
Described resistance vacuum transmitter, in its display device display chip be MAX7219, charactron be 7 sections green for cloudy charactrons；Wherein:
The DIN foot of described MAX7219 chip, CS foot, CLK foot are connected with micromonitor system respectively, ISET foot is connected with positive 5V by a resistance, and DIG0 foot, DIG4 foot, DIG2 foot, DIG3 foot, DIG5 foot, DIG1 foot, SEG A foot, SEG F foot, SEG B foot, SEG G foot, SEG C foot, SEG E foot, SEG DP foot, SEG D foot are green with 7 sections respectively to be connected for cloudy charactron.
Described resistance vacuum transmitter, described amplifying device uses the peripheral circuit of series voltage negtive backword, so can improve the stability of amplifying circuit.
Described resistance vacuum transmitter, described amplifying device includes the controlled source of stable pressure of LM358 chip, TL431, zero potential device ZR, full scale potentiometer FR and resistance R25；The positive input that the first order of described LM358 chip is amplified is connected with resistance R25, the reverse input end that the first order is amplified is connected with bridge unit, the reverse input end that the outfan that the first order is amplified amplifies with the second level is connected, the outfan of the reverse input end source of stable pressure controlled with TL431 amplified in the second level is connected, and the outfan that the second level is amplified is connected with full scale potentiometer FR and A/D analog-digital commutator respectively；1 foot of described zero potential device ZR is connected with SGND, and 2 feet of zero potential device ZR are connected with the common port of SGND and C3, and 3 feet of zero potential device ZR are connected with resistance R22.
Described resistance vacuum transmitter, described A/D analog-digital commutator includes LM331 chip.
Described resistance vacuum transmitter, described bridge unit includes HA17741 chip, BH56 transistor, four arm electrical bridge resistance, the first input resistance R2, the second input resistance R14, protective resistance R15 and protection diode D1；Wherein, forward and reverse input of described HA17741 chip is connected with the second input resistance R2 and the first input resistance R14 respectively; the common port that first input resistance R14 regulates with the R11 in four arm electrical bridge and resistance vacuum is connected; the other end of the second input resistance R2 is connected with the common port of resistance R17 and resistance R18; the outfan of described HA17741 chip is connected with the base stage of BH56 transistor; the emitter stage of BH56 is connected with the common port of R6 and R16, and the colelctor electrode of BH56 is connected with protective resistance R15；The positive pole of protection diode D1 is connected with the resistance R6 of four arm electrical bridge, and the negative pole of protection diode D1 is connected with the voltage of 15V.
Described resistance vacuum transmitter also includes disconnected coupling device, for the break-make of the filament of monitoring resistor vacuum gauge；Described disconnected coupling device includes optocoupler P181, resistance R1, resistance R3 and resistance R4；Wherein, the 1 foot ground connection of described optocoupler P181,2 feet of described optocoupler P181 are connected with resistance R3, the other end of R3 resistance is connected with the common port of the base stage of BH56 and resistance R4, another termination DC+15V voltage of resistance R4, the 3 foot ground connection of the P181 of described optocoupler, 4 feet are connected with resistance R1 and micromonitor system respectively.
Linear in order to control resistance vacuum transmitter analog signal output, described resistance vacuum transmitter also includes analogue output unit；Micromonitor system receives and calculates vacuum after the digital voltage signal that analog-digital commutator is collected, output to display device shows, and export to analogue output unit simultaneously, producing linear analog signal by analogue output unit, the analogue signal of described analogue output unit output can be current signal or voltage signal.
The analogue output unit of described resistance vacuum transmitter includes TL5615 chip, HA17741 operational amplifier, 9013NPN type audion, 9012PNP type audion, the first adjustable potentiometer W1 and the second adjustable potentiometer W2, wherein:
The DIN foot of described TL5615 chip, SCLK foot, CS foot are connected with micromonitor system respectively, 2 feet of REFN foot and the first adjustable potentiometer W1 are connected, 1 foot of OUT foot and the second adjustable potentiometer W2 is connected, 1 foot of the first adjustable potentiometer W1 is connected with the AGND foot of TL5615 chip, 3 feet of the first adjustable potentiometer W1 connect 2.5V voltage, 1 foot of the second adjustable potentiometer W2 and 2 foot short circuits；
The forward of described HA17741 enters through resistance R41 with R48 and is connected with+15V, GND foot respectively, and 3 feet reversely entering through resistance R46 and the second adjustable potentiometer W2 are connected, and the outfan of described HA17741 is connected with 1 foot of described 9012 PNP type triode；
3 feet of the described 9012 PNP type triode reverse input end phase by resistance R47 and described HA17741；
2 feet of described 9012 PNP type triode are connected with 1 foot of described 9013 NPN type triode；
2 feet of described 9013 NPN type triode are connected with positive 15V voltage by resistance R40；
3 feet of described 9013 NPN type triode by resistance R38 or directly can be connected with SGND foot.
Described resistance vacuum transmitter also includes that communicator, described communicator are connected with micromonitor system, it is achieved resistance vacuum transmitter and the communication of peripheral equipment, communicator can be RS485 here.
Resistance vacuum transmitter volume described in the utility model is little；Lightweight；The Linear Control of analog output signal is preferable；When user takes analogue signal, it is possible to reflect current vacuum level accurately；Micromonitor system can decide whether be in disconnected coupling state and pass through numeral method out according to the signal that disconnected coupling device is collected, and brings great convenience to the use of user.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only some embodiments described in this utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
A kind of resistance vacuum structure of transmitter schematic diagram that Fig. 1 provides for this utility model embodiment；
The circuit diagram of a kind of resistance vacuum transmitter that Fig. 2 provides for this utility model embodiment；
The circuit diagram of a kind of bridge unit that Fig. 3 provides for this utility model embodiment；
The circuit diagram of the disconnected coupling device of a kind of resistance vacuum transmitter that Fig. 4 provides for this utility model embodiment；
The circuit diagram of the amplifying device of a kind of resistance vacuum transmitter that Fig. 5 provides for this utility model embodiment；
The circuit diagram of the analog-digital commutator of a kind of resistance vacuum transmitter that Fig. 6 provides for this utility model embodiment；
The circuit diagram of the micromonitor system of a kind of resistance vacuum transmitter that Fig. 7 provides for this utility model embodiment；
The circuit diagram of the simulation output-controlling device of a kind of resistance vacuum transmitter that Fig. 8 provides for this utility model embodiment；
The circuit diagram of the communicator of a kind of resistance vacuum transmitter that Fig. 9 provides for this utility model embodiment；
The circuit diagram of the display device of a kind of resistance vacuum transmitter that Figure 10 provides for this utility model embodiment；
Another resistance vacuum structure of transmitter schematic diagram that Figure 11 this utility model embodiment provides；
The another kind of resistance vacuum structure of transmitter schematic diagram that Figure 12 this utility model embodiment provides；
Another resistance vacuum structure of transmitter schematic diagram that Figure 13 this utility model embodiment provides.
Detailed description of the invention
There are the following problems for existing resistance vacuum transmitter: one, vacuum probe and the measuring instrument of existing resistance vacuum transmitter is to separate, it is connected with cable between the two, cause measuring instrument volume bigger, weight is bigger, use in little space is restricted, it is impossible to meet some fields having higher requirements space and weight；Two, existing resistance vacuum transmitter analog signal output Linear Control is bad, and user takes analogue signal can not reflect current vacuum level accurately.Three, existing resistance vacuum transmitter does not break coupling function, and user can not judge that resistance vacuum transmitter is shown that current vacuum level under vacuum conditions is to regulate the worst or be not switched on.In order to solve the problems referred to above, this utility model embodiment provides a kind of resistance vacuum transmitter, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of this utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into protection domain of the present utility model.
Refer to a kind of resistance vacuum transmitter that Fig. 1 provides for this utility model embodiment, comprising: resistance vacuum is regulated, bridge unit, amplifying device, A/D analog-digital commutator, supply unit, micromonitor system (micromonitor system used in the present embodiment is STC89C54RD), display device；
Described bridge unit is regulated with resistance vacuum and is connected, in order to regulate the operating current providing stable to resistance vacuum；
Described amplifying device is connected with bridge unit and A/D analog-digital commutator respectively, and the analogue signal in order to bridge unit is exported is transmitted to A/D analog-digital commutator after amplifying；
Described A/D analog-digital commutator is connected with micromonitor system, is converted into digital signal in order to the analogue signal that amplifying device is exported；
Described micromonitor system is connected with display device, in order to export the vacuum tested with display to display device after being processed by the digital signal that described A/D analog-digital commutator exports；
Described display device includes charactron and display chip.
Described resistance vacuum transmitter, in its display device display chip be MAX7219, charactron be 7 sections green for cloudy charactrons；Wherein:
The DIN foot of described MAX7219 chip, CS foot, CLK foot are connected with micromonitor system respectively, ISET foot is connected with positive 5V by a resistance, and DIG0 foot, DIG4 foot, DIG2 foot, DIG3 foot, DIG5 foot, DIG1 foot, SEG A foot, SEG F foot, SEG B foot, SEG G foot, SEG C foot, SEG E foot, SEG DP foot, SEG D foot are green with 7 sections respectively to be connected for cloudy charactron.
Described resistance vacuum transmitter, described amplifying device uses the peripheral circuit of series voltage negtive backword, so can improve the stability of amplifying circuit, described amplifying device includes the controlled source of stable pressure of LM358 chip, TL431, zero potential device ZR, full scale potentiometer FR and resistance R25；The positive input that the first order of described LM358 chip is amplified is connected with resistance R25, the reverse input end that the first order is amplified is connected with bridge unit, the reverse input end that the outfan that the first order is amplified amplifies with the second level is connected, the outfan of the reverse input end source of stable pressure controlled with TL431 amplified in the second level is connected, and the outfan that the second level is amplified is connected with full scale potentiometer ZR and A/D analog-digital commutator respectively；1 foot of described zero potential device ZR is connected with SGND, and 2 feet of zero potential device ZR are connected with the common port of SGND and C3, and 3 feet of zero potential device ZR are connected with resistance R22.
Described resistance vacuum transmitter, described bridge unit includes HA17741 chip, BH56 transistor, four arm electrical bridge resistance, the first input resistance R2, the second input resistance R14, protective resistance R15 and protection diode D1；Wherein, forward and reverse input of described HA17741 chip is connected with the second input resistance R2 and the first input resistance R14 respectively; the common port that first input resistance R14 regulates with the R11 in four arm electrical bridge and resistance vacuum is connected; the other end of the second input resistance R2 is connected with the common port of resistance R17 and resistance R18; the outfan of described HA17741 chip is connected with the base stage of BH56 transistor; the emitter stage of BH56 is connected with the common port of R6 and R16, and the colelctor electrode of BH56 is connected with protective resistance R15；The positive pole of protection diode D1 is connected with the resistance R6 of four arm electrical bridge, and the negative pole of protection diode D1 is connected with the voltage of 15V.
Described resistance vacuum transmitter also includes disconnected coupling device, for the break-make of the filament of monitoring resistor vacuum gauge；Described disconnected coupling device includes optocoupler P181, resistance R1, resistance R3 and resistance R4；Wherein, the 1 foot ground connection of described optocoupler P181,2 feet of described optocoupler P181 are connected with resistance R3, the other end of R3 resistance is connected with the common port of the base stage of BH56 and resistance R4, another termination DC+15V voltage of resistance R4, the 3 foot ground connection of the P181 of described optocoupler, 4 feet are connected with resistance R1 and micromonitor system respectively.
Linear in order to control resistance vacuum transmitter analog signal output, the resistance vacuum transmitter described in the present embodiment also includes analogue output unit；Micromonitor system receives and calculates vacuum after the digital voltage signal that analog-digital commutator is collected, output to display device shows, and export to analogue output unit simultaneously, producing linear analog signal by analogue output unit, the analogue signal of described analogue output unit output can be current signal or voltage signal.
The analogue output unit of the resistance vacuum transmitter of the present embodiment includes TL5615 chip, HA17741 operational amplifier, 9013NPN type audion, 9012PNP type audion, the first adjustable potentiometer W1 and the second adjustable potentiometer W2, wherein:
The DIN foot of described TL5615 chip, SCLK foot, CS foot are connected with micromonitor system respectively, 2 feet of REFN foot and the first adjustable potentiometer W1 are connected, 1 foot of OUT foot and the second adjustable potentiometer W2 is connected, 1 foot of the first adjustable potentiometer W1 is connected with the AGND foot of TL5615 chip, 3 feet of the first adjustable potentiometer W1 connect 2.5V voltage, 1 foot of the second adjustable potentiometer W2 and 2 foot short circuits；
The forward of described HA17741 enters through resistance R41 with R48 and is connected with+15V, GND foot respectively, and 3 feet reversely entering through resistance R46 and the second adjustable potentiometer W2 are connected, and the outfan of described HA17741 is connected with 1 foot of described 9012 PNP type triode；
3 feet of the described 9012 PNP type triode reverse input end phase by resistance R47 and described HA17741；
2 feet of described 9012 PNP type triode are connected with 1 foot of described 9013 NPN type triode；
2 feet of described 9013 NPN type triode are connected with positive 15V voltage by resistance R40；
3 feet of described 9013 NPN type triode by resistance R38 or directly can be connected with SGND foot.
Resistance vacuum transmitter described in the present embodiment also includes that communicator, described communicator are connected with micromonitor system, it is achieved resistance vacuum transmitter and the communication of peripheral equipment, the communicator described in the present embodiment can be RS485.
This utility model embodiment can also use following form structure:
The first embodiment is the structure described in Figure 11, and described resistance vacuum transmitter is regulated by resistance vacuum, bridge unit, amplifying device, A/D analog-digital commutator, supply unit, micromonitor system, display device form；The structure of its building block is identical with above-described embodiment with annexation.
The second embodiment is the structure described in Figure 12, and described resistance vacuum transmitter is regulated by resistance vacuum, bridge unit, amplifying device, A/D analog-digital commutator, supply unit, micromonitor system, display device and disconnected coupling device form；The structure of its building block is identical with above-described embodiment with annexation.
The third embodiment is the structure described in Figure 13, and described resistance vacuum transmitter is regulated by resistance vacuum, bridge unit, amplifying device, A/D analog-digital commutator, supply unit, micromonitor system, display device, disconnected coupling device and analogue output unit form.The structure of its building block is identical with above-described embodiment with annexation.
Resistance vacuum transmitter volume described in this utility model embodiment is little；Lightweight；The Linear Control of analog output signal is preferable；When user takes analogue signal, it is possible to reflect current vacuum level accurately；Micromonitor system can decide whether be in disconnected coupling state and pass through numeral method out according to the signal that disconnected coupling device is collected, and brings great convenience to the use of user.
Claims (17)
1. a resistance vacuum transmitter, is characterised by, comprising: resistance vacuum is regulated, bridge unit, amplifying device, A/D analog-digital commutator, supply unit, micromonitor system, display device；
Described bridge unit is regulated with resistance vacuum and is connected；
Described amplifying device is connected with bridge unit and A/D analog-digital commutator respectively, and the analogue signal in order to bridge unit is exported is transmitted to A/D analog-digital commutator after amplifying；
Described A/D analog-digital commutator is connected with micromonitor system, is converted into digital signal in order to the analogue signal that amplifying device is exported；
Described micromonitor system is connected with display device, in order to export the vacuum tested with display to display device after being processed by the digital signal that described A/D analog-digital commutator exports；
Described display device includes charactron and display chip.
2. resistance vacuum transmitter as claimed in claim 1 a kind of, it is characterised in that in described display device display chip be MAX7219, charactron be 7 sections green for cloudy charactron；Wherein:
The DIN foot of described MAX7219 chip, CS foot, CLK foot are connected with micromonitor system respectively, ISET foot is connected with positive 5V by a resistance, and DIG0 foot, DIG4 foot, DIG2 foot, DIG3 foot, DIG5 foot, DIG1 foot, SEG A foot, SEG F foot, SEG B foot, SEG G foot, SEG C foot, SEG E foot, SEG DP foot, SEG D foot are green with 7 sections respectively to be connected for cloudy charactron.
3. a kind of resistance vacuum transmitter as claimed in claim 1, it is characterised in that described amplifying device uses the peripheral circuit of series voltage negtive backword.
4. a kind of resistance vacuum transmitter as claimed in claim 3, it is characterised in that described amplifying device includes the controlled source of stable pressure of LM358 chip, TL431, zero potential device ZR, full scale potentiometer FR and resistance R25；The positive input that the first order of described LM358 chip is amplified is connected with resistance R25, the reverse input end that the first order is amplified is connected with bridge unit, the reverse input end that the outfan that the first order is amplified amplifies with the second level is connected, the outfan of the reverse input end source of stable pressure controlled with TL431 amplified in the second level is connected, and the outfan that the second level is amplified is connected with full scale potentiometer FR and A/D analog-digital commutator respectively；1 foot of described zero potential device ZR is connected with SGND, and 2 feet of zero potential device ZR are connected with the common port of SGND and C3, and 3 feet of zero potential device ZR are connected with resistance R22.
5. a kind of resistance vacuum transmitter as claimed in claim 1, it is characterised in that described A/D analog-digital commutator includes LM331 chip.
6. a kind of resistance vacuum transmitter as claimed in claim 4, it is characterised in that described A/D analog-digital commutator includes LM331 chip.
7. a kind of resistance vacuum transmitter as claimed in claim 1; it is characterized in that, described bridge unit includes HA17741 chip, BH56 transistor, four arm electrical bridge resistance, the first input resistance R2, the second input resistance R14, protective resistance R15 and protection diode D1；Wherein, forward and reverse input of described HA17741 chip is connected with the second input resistance R2 and the first input resistance R14 respectively; the common port that first input resistance R14 regulates with the R11 in four arm electrical bridge and resistance vacuum is connected; the other end of the second input resistance R2 is connected with the common port of resistance R17 and resistance R18; the outfan of described HA17741 chip is connected with the base stage of BH56 transistor; the emitter stage of BH56 is connected with the common port of R6 and R16, and the colelctor electrode of BH56 is connected with protective resistance R15；The positive pole of protection diode D1 is connected with the resistance R6 of four arm electrical bridge, and the negative pole of protection diode D1 is connected with the voltage of 15V.
8. a kind of resistance vacuum transmitter as claimed in claim 6; it is characterized in that, described bridge unit includes HA17741 chip, BH56 transistor, four arm electrical bridge resistance, the first input resistance R2, the second input resistance R14, protective resistance R15 and protection diode D1；Wherein, forward and reverse input of described HA17741 chip is connected with the second input resistance R2 and the first input resistance R14 respectively; the common port that first input resistance R14 regulates with the R11 in four arm electrical bridge and resistance vacuum is connected; the other end of the second input resistance R2 is connected with the common port of resistance R17 and resistance R18; the outfan of described HA17741 chip is connected with the base stage of BH56 transistor; the emitter stage of BH56 is connected with the common port of R6 and R16, and the colelctor electrode of BH56 is connected with protective resistance R15；The positive pole of protection diode D1 is connected with the resistance R6 of four arm electrical bridge, and the negative pole of protection diode D1 is connected with the voltage of 15V.
9. a kind of resistance vacuum transmitter as claimed in claim 1, it is characterised in that described resistance vacuum transmitter also includes disconnected coupling device, for the break-make of the filament of monitoring resistor vacuum gauge；Described disconnected coupling device includes optocoupler P181, resistance R1, resistance R3 and resistance R4；Wherein, the 1 foot ground connection of described optocoupler P181,2 feet of described optocoupler P181 are connected with resistance R3, the other end of R3 resistance is connected with the common port of the base stage of BH56 and resistance R4, another termination DC+15V voltage of resistance R4, the 3 foot ground connection of the P181 of described optocoupler, 4 feet are connected with resistance R1 and micromonitor system respectively.
10. a kind of resistance vacuum transmitter as claimed in claim 8, it is characterised in that described resistance vacuum transmitter also includes disconnected coupling device, for the break-make of the filament of monitoring resistor vacuum gauge；Described disconnected coupling device includes optocoupler P181, resistance R1, resistance R3 and resistance R4；Wherein, the 1 foot ground connection of described optocoupler P181,2 feet of described optocoupler P181 are connected with resistance R3, the other end of R3 resistance is connected with the common port of the base stage of BH56 and resistance R4, another termination DC+15V voltage of resistance R4, the 3 foot ground connection of the P181 of described optocoupler, 4 feet are connected with resistance R1 and micromonitor system respectively.
11. a kind of resistance vacuum transmitters as claimed in claim 1, it is characterised in that described resistance vacuum transmitter also includes analogue output unit；Micromonitor system receives and calculates vacuum after the digital voltage signal that analog-digital commutator is collected, output to display device shows, and export to analogue output unit simultaneously, producing linear analog signal by analogue output unit, the analogue signal of described analogue output unit output can be current signal or voltage signal.
12. a kind of resistance vacuum transmitters as claimed in claim 10, it is characterised in that described resistance vacuum transmitter also includes analogue output unit；Micromonitor system receives and calculates vacuum after the digital voltage signal that analog-digital commutator is collected, output to display device shows, and export to analogue output unit simultaneously, producing linear analog signal by analogue output unit, the analogue signal of described analogue output unit output can be current signal or voltage signal.
The 13. a kind of resistance vacuum transmitters as described in claim 11 or 12, it is characterized in that, described analogue output unit includes TL5615 chip, HA17741 operational amplifier, 9013NPN type audion, 9012PNP type audion, the first adjustable potentiometer W1 and the second adjustable potentiometer W2, wherein:
The DIN foot of described TL5615 chip, SCLK foot, CS foot are connected with micromonitor system respectively, 2 feet of REFN foot and the first adjustable potentiometer W1 are connected, 1 foot of OUT foot and the second adjustable potentiometer W2 is connected, 1 foot of the first adjustable potentiometer W1 is connected with the AGND foot of TL5615 chip, 3 feet of the first adjustable potentiometer W1 connect 2.5V voltage, 1 foot of the second adjustable potentiometer W2 and 2 foot short circuits；
The forward of described HA17741 enters through resistance R41 with R48 and is connected with positive 15V, GND foot respectively, and 3 feet reversely entering through resistance R46 and the second adjustable potentiometer W2 are connected, and the outfan of described HA17741 is connected with 1 foot of described 9012PNP type audion；
3 feet of the described 9012PNP type audion reverse input end phase by resistance R47 and described HA17741；
2 feet of described 9012PNP type audion are connected with 1 foot of described 9013NPN type audion；
2 feet of described 9013NPN type audion are connected with positive 15V voltage by resistance R40；
3 feet of described 9013NPN type audion by resistance R38 or directly can be connected with SGND foot.
14. a kind of resistance vacuum transmitters as claimed in claim 1, it is characterised in that described resistance vacuum transmitter also includes that communicator, described communicator are connected with micromonitor system, it is achieved resistance vacuum transmitter and the communication of peripheral equipment.
15. a kind of resistance vacuum transmitters as claimed in claim 13, it is characterised in that described resistance vacuum transmitter also includes that communicator, described communicator are connected with micromonitor system, it is achieved resistance vacuum transmitter and the communication of peripheral equipment.
16. a kind of resistance vacuum transmitters as claimed in claim 15, it is characterised in that described communicator is RS485.
The 17. a kind of resistance vacuum transmitters as described in claim 14 16 any claim, it is characterised in that described micromonitor system is STC89C54RD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620176232.7U CN205642725U (en) | 2016-03-08 | 2016-03-08 | Resistance vacuum transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620176232.7U CN205642725U (en) | 2016-03-08 | 2016-03-08 | Resistance vacuum transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205642725U true CN205642725U (en) | 2016-10-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620176232.7U Withdrawn - After Issue CN205642725U (en) | 2016-03-08 | 2016-03-08 | Resistance vacuum transmitter |
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| CN (1) | CN205642725U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699007A (en) * | 2016-03-08 | 2016-06-22 | 成都国光电气股份有限公司 | Resistance vacuum transmitter |
| CN113865784A (en) * | 2021-09-26 | 2021-12-31 | 成都国光电气股份有限公司 | Wide-range thermocouple vacuum gauge |
-
2016
- 2016-03-08 CN CN201620176232.7U patent/CN205642725U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699007A (en) * | 2016-03-08 | 2016-06-22 | 成都国光电气股份有限公司 | Resistance vacuum transmitter |
| CN105699007B (en) * | 2016-03-08 | 2019-02-12 | 成都国光电气股份有限公司 | A kind of resistance vacuum transmitter |
| CN113865784A (en) * | 2021-09-26 | 2021-12-31 | 成都国光电气股份有限公司 | Wide-range thermocouple vacuum gauge |
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