CN105699007B - A kind of resistance vacuum transmitter - Google Patents
A kind of resistance vacuum transmitter Download PDFInfo
- Publication number
- CN105699007B CN105699007B CN201610130401.8A CN201610130401A CN105699007B CN 105699007 B CN105699007 B CN 105699007B CN 201610130401 A CN201610130401 A CN 201610130401A CN 105699007 B CN105699007 B CN 105699007B
- Authority
- CN
- China
- Prior art keywords
- resistance
- foot
- vacuum
- analog
- chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
- G01L21/10—Vacuum gauges by measuring variations in the heat conductivity of the medium, the pressure of which is to be measured
- G01L21/12—Vacuum gauges by measuring variations in the heat conductivity of the medium, the pressure of which is to be measured measuring changes in electric resistance of measuring members, e.g. of filaments; Vacuum gauges of the Pirani type
Abstract
The invention discloses a kind of resistance vacuum transmitters comprising: resistance vacuum regulates, bridge unit, amplifying device, A/D analog-digital commutator, power supply device, micromonitor system, display device；Resistance vacuum transmitter of the present invention is small in size；It is light-weight；The Linear Control of analog output signal is preferable；When user takes analog signal, it can accurately reflect current vacuum level；Micromonitor system can decide whether in disconnected coupling state according to the signal that coupling device is collected that breaks and be come out by numeral method, bring great convenience to the use of user.
Description
Technical field
The present invention relates to technical field of measuring equipment, more specifically to a kind of vacuum measuring device.
Background technique
Resistance vacuum transmitter is a kind of vacuum measurement instrument, has stability high in its measurement range, and measurement is accurate,
It can continuously measure, the features such as long service life, be widely used in the necks such as Aeronautics and Astronautics, nuclear energy, electronics and electrical equipment manufacture
Domain.
There are the following problems for existing resistance vacuum transmitter: one, the vacuum probe of existing resistance vacuum transmitter and
Measuring instrument is separation, is connected between the two with cable, causes measuring instrument volume larger, weight is larger, in small space
In use be restricted, be not able to satisfy some pairs of spaces and field that weight has higher requirements；Two, existing resistance vacuum becomes
It send device analog signal output Linear Control bad, takes analog signal that can not accurately reflect current vacuum level user.Three,
The not disconnected coupling function of existing resistance vacuum transmitter, user cannot judge what resistance vacuum transmitter was shown under vacuum conditions
It is current vacuum level or regulates and gone bad or be not switched on.
Summary of the invention
In view of this, the present invention provides a kind of resistance vacuum transmitter comprising: resistance vacuum is regulated, bridge unit, is put
Big device, A/D analog-digital commutator, power supply device, micromonitor system, display device；
- the bridge unit is regulated with resistance vacuum to be connected, and provides stable work electricity to regulate to resistance vacuum
Stream；
- the amplifying device is connected with bridge unit and A/D analog-digital commutator respectively, to bridge unit is defeated
A/D analog-digital commutator is transmitted to after analog signal amplification out；
- A/D the analog-digital commutator is connected with micromonitor system, to the analog signal that amplifying device is exported
It is converted into digital signal；
- the micromonitor system is connected with display device, to the number for exporting the A/D analog-digital commutator
Output shows the vacuum degree of test to display device after signal is handled；
- the display device includes charactron and display chip.
The resistance vacuum transmitter, it is that 7 sections of greens supply that display chip, which is MAX7219, charactron, in display device
Negative charactron；Wherein:
DIN foot, CS foot, the CLK foot of the MAX7219 chip are connected with micromonitor system respectively, and ISET foot passes through one
Resistance is connected with positive 5V, 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 connected with 7 sections of greens for negative charactron respectively.
The resistance vacuum transmitter, the amplifying device use the peripheral circuit of series voltage negtive backword, in this way may be used
To improve the stability of amplifying circuit.
The resistance vacuum transmitter, the amplifying device include LM358 chip, the controllable source of stable pressure of TL431, zero point electricity
Position device ZR, full scale potentiometer FR and resistance R25；The positive input and resistance R25 phase of the first order amplification of the LM358 chip
Even, the reverse input end of first order amplification is connected with bridge unit, and the output end of first order amplification amplifies reversed with the second level
Input terminal is connected, and in the second level, the reverse input end of amplification is connected with the output end of the controllable source of stable pressure of TL431, second level amplification
Output end is connected with full scale potentiometer FR and A/D analog-digital commutator respectively；1 foot and SGND phase of the zero potential device ZR
Connection, 2 feet of zero potential device ZR are connected with the common end of SGND and C3, and 3 feet of zero potential device ZR are connected with resistance R22
It connects.
The resistance vacuum transmitter, the A/D analog-digital commutator include LM331 chip.
The resistance vacuum transmitter, the bridge unit include HA17741 chip, BH56 transistor, four arm electrical bridge
Resistance, the first input resistance R14, the second input resistance R2, protective resistance R15 and protection diode D1；Wherein, described
Forward and reverse input terminal of HA17741 chip is connected with the second input resistance R2 and the first input resistance R14 respectively, the first input electricity
Resistance R14 in four arm electrical bridge R11 and the common end regulated of resistance vacuum be connected, the other end of the second input resistance R2 with it is electric
Resistance R17 is connected with the common end of resistance R18, and the output end of the HA17741 chip is connected with the base stage of BH56 transistor,
The emitter of BH56 is connected with the common end of R6 and R16, and the collector of BH56 is connected with protective resistance R15；Protect two poles
The anode of pipe D1 is connected with the resistance R6 of four arm electrical bridge, and the cathode of protection diode D1 is connected with the voltage of 15V.
The resistance vacuum transmitter further includes disconnected coupling device, the on-off of the filament for monitoring resistor vacuum gauge；
The disconnected coupling device includes optocoupler P181, resistance R1, resistance R3 and resistance R4；Wherein, the 1 foot ground connection of the optocoupler P181, institute
2 feet for stating optocoupler P181 are connected with resistance R3, and the other end of R3 resistance is connected with the common end of the base stage of BH56 and resistance R4
Connect, another termination DC+15V voltage of resistance R4,3 feet of the P181 of optocoupler ground connection, 4 feet respectively with resistance R1 and microcontroller
Device is connected.
Linear in order to control resistance vacuum transmitter analog signal output, the resistance vacuum transmitter further includes simulation
Output device；Micromonitor system reception calculates vacuum degree after the digital voltage signal that analog-digital commutator is collected, and output is extremely
Display device is shown, and is exported simultaneously to analogue output unit, generates linear analog signal, institute by analogue output unit
The analog signal for stating analogue output unit output can be current signal or voltage signal.
The analogue output unit of the resistance vacuum transmitter include TL5615 chip, HA17741 operational amplifier,
9013NPN type triode, 9012PNP type triode, the first adjustable potentiometer W1 and the second adjustable potentiometer W2, in which:
DIN foot, SCLK foot, the CS foot of the TL5615 chip are connected with micromonitor system respectively, and REFN foot and first can
Adjust potentiometer W1 2 feet be connected, OUT foot is connected with 1 foot of the second adjustable potentiometer W2,1 foot of the first adjustable potentiometer W1 and
The AGND foot of TL5615 chip is connected, and 3 feet of the first adjustable potentiometer W1 connect 2.5V voltage, 1 foot of the second adjustable potentiometer W2
It is shorted with 2 feet；
The positive input of the HA17741 is connected with+15V, GND foot respectively by resistance R41 and R48, and reversed input is logical
It crosses resistance R46 to be connected with 3 feet of the second adjustable potentiometer W2, the output end of the HA17741 and 9012 positive-negative-positive, three pole
1 foot of pipe is connected；
3 feet of 9012 PNP type triode pass through the reverse input end phase of the resistance R47 and HA17741；
2 feet of 9012 PNP type triode are connected with 1 foot of 9013 NPN type triode；
2 feet of 9013 NPN type triode are connected by resistance R40 with positive 15V voltage；
3 feet of 9013 NPN type triode can be connected by resistance R38 or directly with SGND foot.
The resistance vacuum transmitter further includes communication device, and the communication device is connected with micromonitor system, is realized
The communication of resistance vacuum transmitter and peripheral equipment, communication device can be RS485 here.
Resistance vacuum transmitter of the present invention is small in size；It is light-weight；The Linear Control of analog output signal is preferable；?
When user takes analog signal, it can accurately reflect current vacuum level；The signal that micromonitor system is collected according to the coupling device that breaks
It can decide whether in disconnected coupling state and come out by numeral method, brought great convenience to the use of user.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The some embodiments recorded in invention, for those of ordinary skill in the art, without creative efforts,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of resistance vacuum structure of transmitter schematic diagram provided in an embodiment of the present invention；
Fig. 2 is a kind of circuit diagram of resistance vacuum transmitter provided in an embodiment of the present invention；
Fig. 3 is a kind of circuit diagram of bridge unit provided in an embodiment of the present invention；
Fig. 4 is a kind of circuit diagram of the disconnected coupling device of resistance vacuum transmitter provided in an embodiment of the present invention；
Fig. 5 is a kind of circuit diagram of the amplifying device of resistance vacuum transmitter provided in an embodiment of the present invention；
Fig. 6 is a kind of circuit diagram of the analog-digital commutator of resistance vacuum transmitter provided in an embodiment of the present invention；
Fig. 7 is a kind of circuit diagram of the micromonitor system of resistance vacuum transmitter provided in an embodiment of the present invention；
Fig. 8 is a kind of circuit diagram of the simulation output control device of resistance vacuum transmitter provided in an embodiment of the present invention；
Fig. 9 is a kind of circuit diagram of the communication device of resistance vacuum transmitter provided in an embodiment of the present invention；
Figure 10 is a kind of circuit diagram of the display device of resistance vacuum transmitter provided in an embodiment of the present invention.
Figure 11 another resistance vacuum structure of transmitter schematic diagram provided in an embodiment of the present invention；
Figure 12 another resistance vacuum structure of transmitter schematic diagram provided in an embodiment of the present invention；
Figure 13 another resistance vacuum structure of transmitter schematic diagram provided in an embodiment of the present invention.
Specific embodiment
There are the following problems for existing resistance vacuum transmitter: one, the vacuum probe of existing resistance vacuum transmitter and
Measuring instrument is separation, is connected between the two with cable, causes measuring instrument volume larger, weight is larger, in small space
In use be restricted, be not able to satisfy some pairs of spaces and field that weight has higher requirements；Two, existing resistance vacuum becomes
It send device analog signal output Linear Control bad, takes analog signal that can not accurately reflect current vacuum level user.Three,
The not disconnected coupling function of existing resistance vacuum transmitter, user cannot judge what resistance vacuum transmitter was shown under vacuum conditions
It is current vacuum level is to regulate to have gone bad or be not switched on.To solve the above-mentioned problems, the embodiment of the present invention provides a kind of resistance
Vacuum transducer, with reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carry out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment belongs to protection scope of the present invention.
Please referring to Fig. 1 is a kind of resistance vacuum transmitter provided in an embodiment of the present invention comprising: resistance vacuum regulates,
Bridge unit, amplifying device, A/D analog-digital commutator, power supply device, the micromonitor system (microcontroller used in the present embodiment
Device is STC89C54RD), display device；
- the bridge unit is regulated with resistance vacuum to be connected, and provides stable work electricity to regulate to resistance vacuum
Stream；
- the amplifying device is connected with bridge unit and A/D analog-digital commutator respectively, to bridge unit is defeated
A/D analog-digital commutator is transmitted to after analog signal amplification out；
- A/D the analog-digital commutator is connected with micromonitor system, to the analog signal that amplifying device is exported
It is converted into digital signal；
- the micromonitor system is connected with display device, to the number for exporting the A/D analog-digital commutator
Output shows the vacuum degree of test to display device after signal is handled；
- the display device includes charactron and display chip.
The resistance vacuum transmitter, it is that 7 sections of greens supply that display chip, which is MAX7219, charactron, in display device
Negative charactron；Wherein:
DIN foot, CS foot, the CLK foot of the MAX7219 chip are connected with micromonitor system respectively, and ISET foot passes through one
Resistance is connected with positive 5V, 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 connected with 7 sections of greens for negative charactron respectively.
The resistance vacuum transmitter, the amplifying device use the peripheral circuit of series voltage negtive backword, in this way may be used
To improve the stability of amplifying circuit, the amplifying device includes LM358 chip, the controllable source of stable pressure of TL431, zero potential device
ZR, full scale potentiometer FR and resistance R25；The positive input of the first order amplification of the LM358 chip is connected with resistance R25,
The reverse input end of first order amplification is connected with bridge unit, the output end of first order amplification and the reversed input of second level amplification
End is connected, and in the second level, the reverse input end of amplification is connected with the output end of the controllable source of stable pressure of TL431, the output of second level amplification
End is connected with full scale potentiometer ZR and A/D analog-digital commutator respectively；1 foot of the zero potential device ZR is connected with SGND
It connects, 2 feet of zero potential device ZR are connected with the common end of SGND and C3, and 3 feet of zero potential device ZR are connected with resistance R22
It connects.
The resistance vacuum transmitter, the bridge unit include HA17741 chip, BH56 transistor, four arm electrical bridge
Resistance, the first input resistance R14, the second input resistance R2, protective resistance R15 and protection diode D1；Wherein, described
Forward and reverse input terminal of HA17741 chip is connected with the second input resistance R2 and the first input resistance R14 respectively, the first input electricity
Resistance R14 in four arm electrical bridge R11 and the common end regulated of resistance vacuum be connected, the other end of the second input resistance R2 with it is electric
Resistance R17 is connected with the common end of resistance R18, and the output end of the HA17741 chip is connected with the base stage of BH56 transistor,
The emitter of BH56 is connected with the common end of R6 and R16, and the collector of BH56 is connected with protective resistance R15；Protect two poles
The anode of pipe D1 is connected with the resistance R6 of four arm electrical bridge, and the cathode of protection diode D1 is connected with the voltage of 15V.
The resistance vacuum transmitter further includes disconnected coupling device, the on-off of the filament for monitoring resistor vacuum gauge；
The disconnected coupling device includes optocoupler P181, resistance R1, resistance R3 and resistance R4；Wherein, the 1 foot ground connection of the optocoupler P181, institute
2 feet for stating optocoupler P181 are connected with resistance R3, and the other end of R3 resistance is connected with the common end of the base stage of BH56 and resistance R4
Connect, another termination DC+15V voltage of resistance R4,3 feet of the P181 of optocoupler ground connection, 4 feet respectively with resistance R1 and microcontroller
Device is connected.
Linear in order to control resistance vacuum transmitter analog signal output, resistance vacuum transmitter described in the present embodiment is also
Including analogue output unit；Micromonitor system reception calculates vacuum after the digital voltage signal that analog-digital commutator is collected
Degree, output to display device is shown, and is exported simultaneously to analogue output unit, generates linear mould by analogue output unit
The analog signal of quasi- signal, the 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 operation amplifier
Device, 9013NPN type triode, 9012PNP type triode, the first adjustable potentiometer W1 and the second adjustable potentiometer W2, in which:
DIN foot, SCLK foot, the CS foot of the TL5615 chip are connected with micromonitor system respectively, and REFN foot and first can
Adjust potentiometer W1 2 feet be connected, OUT foot is connected with 1 foot of the second adjustable potentiometer W2,1 foot of the first adjustable potentiometer W1 and
The AGND foot of TL5615 chip is connected, and 3 feet of the first adjustable potentiometer W1 connect 2.5V voltage, 1 foot of the second adjustable potentiometer W2
It is shorted with 2 feet；
The positive input of the HA17741 is connected with+15V, GND foot respectively by resistance R41 and R48, and reversed input is logical
It crosses resistance R46 to be connected with 3 feet of the second adjustable potentiometer W2, the output end of the HA17741 and 9012 positive-negative-positive, three pole
1 foot of pipe is connected；
3 feet of 9012 PNP type triode pass through the reverse input end phase of the resistance R47 and HA17741；
2 feet of 9012 PNP type triode are connected with 1 foot of 9013 NPN type triode；
2 feet of 9013 NPN type triode are connected by resistance R40 with positive 15V voltage；
3 feet of 9013 NPN type triode can be connected by resistance R38 or directly with SGND foot.
Resistance vacuum transmitter described in the present embodiment further includes communication device, the communication device and micromonitor system phase
Even, the communication of resistance vacuum transmitter and peripheral equipment is realized, communication device described in the present embodiment can be RS485.
Following form structure can also be used in the embodiment of the present invention:
The first embodiment is structure described in Figure 11, and the resistance vacuum transmitter is regulated by resistance vacuum, electric bridge fills
It sets, amplifying device, A/D analog-digital commutator, power supply device, micromonitor system, display device composition；The structure of its building block
It is identical with above-described embodiment with connection relationship.
Second of embodiment is structure described in Figure 12, and the resistance vacuum transmitter is regulated by resistance vacuum, electric bridge fills
It sets, amplifying device, A/D analog-digital commutator, power supply device, micromonitor system, display device and disconnected coupling device composition；It is formed
The structure of component and connection relationship are identical with above-described embodiment.
The third embodiment is structure described in Figure 13, and the resistance vacuum transmitter is regulated by resistance vacuum, electric bridge fills
It sets, amplifying device, A/D analog-digital commutator, power supply device, micromonitor system, display device, break coupling device and simulation output dress
Set composition.The structure of its building block and connection relationship are identical with above-described embodiment.
Resistance vacuum transmitter described in the embodiment of the present invention is small in size；It is light-weight；The Linear Control of analog output signal
Preferably；When user takes analog signal, it can accurately reflect current vacuum level；Micromonitor system is collected according to the coupling device that breaks
Signal can decide whether in disconnected coupling state and come out by numeral method, very big side is brought to the use of user
Just.
Claims (12)
1. a kind of resistance vacuum transmitter, is characterized in that comprising: resistance vacuum regulates, bridge unit, amplifying device, A/D mould
Analog-to-digital conversion apparatus, power supply device, micromonitor system, display device；
- the bridge unit is regulated with resistance vacuum to be connected；
- the amplifying device is connected with bridge unit and A/D analog-digital commutator respectively, to what bridge unit was exported
A/D analog-digital commutator is transmitted to after analog signal amplification；
- A/D the analog-digital commutator is connected with micromonitor system, to the analog signal conversion that amplifying device is exported
At digital signal；
- the micromonitor system is connected with display device, to the digital signal for exporting the A/D analog-digital commutator
Output shows the vacuum degree of test to display device after being handled；
- the display device includes charactron and display chip；
The resistance vacuum transmitter further includes disconnected coupling device, the on-off of the filament for monitoring resistor vacuum gauge；It is described disconnected
Coupling device includes optocoupler P181, resistance R1, resistance R3 and resistance R4；Wherein, the 1 foot ground connection of the optocoupler P181, the optocoupler
2 feet of P181 are connected with resistance R3, and the other end of R3 resistance is connected with the common end of the base stage of BH56 and resistance R4, resistance
Another termination DC+15V voltage of R4, the 3 feet ground connection of the optocoupler P181,4 feet are connected with resistance R1 and micromonitor system respectively.
2. a kind of resistance vacuum transmitter as described in claim 1, which is characterized in that display chip is in the display device
MAX7219, charactron are 7 sections of greens for negative charactron；Wherein:
DIN foot, CS foot, the CLK foot of the MAX7219 chip are connected with micromonitor system respectively, and ISET foot passes through a resistance
Be connected with positive 5V, 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 connected with 7 sections of greens for negative charactron respectively.
3. a kind of resistance vacuum transmitter as described in claim 1, which is characterized in that the amplifying device uses Voltage Series
The peripheral circuit of negative-feedback.
4. a kind of resistance vacuum transmitter as claimed in claim 3, which is characterized in that the amplifying device includes LM358 core
The controllable source of stable pressure of piece, TL431, zero potential device ZR, full scale potentiometer FR and resistance R25；The first order of the LM358 chip is put
Big positive input is connected with resistance R25, and the reverse input end of first order amplification is connected with bridge unit, first order amplification
Output end is connected with the reverse input end that the second level is amplified, the reverse input end and the controllable source of stable pressure of TL431 of amplification in the second level
Output end be connected, the second level amplification output end be connected respectively with full scale potentiometer FR and A/D analog-digital commutator；It is described
1 foot of zero potential device ZR is connected with SGND, and 2 feet of zero potential device ZR are connected with the common end of SGND and C3, zero point
3 feet of potentiometer ZR are connected with resistance R22.
5. a kind of resistance vacuum transmitter as described in claim 1, which is characterized in that the A/D analog-digital commutator includes
LM331 chip.
6. a kind of resistance vacuum transmitter as claimed in claim 4, which is characterized in that the A/D analog-digital commutator includes
LM331 chip.
7. a kind of resistance vacuum transmitter as described in claim 1, which is characterized in that the bridge unit includes HA17741
Chip, BH56 transistor, four arm electrical bridge resistance, the first input resistance R14, the second input resistance R2, protective resistance R15 and guarantor
Protect diode D1；Wherein, forward and reverse input terminal of the HA17741 chip is electric with the input of the second input resistance R2 and first respectively
R14 is hindered to be connected, the first input resistance R14 in four arm electrical bridge R11 and the common end regulated of resistance vacuum be connected, second is defeated
The other end for entering resistance R2 is connected with the common end of resistance R17 and resistance R18, the output end of the HA17741 chip with
The base stage of BH56 transistor is connected, and the emitter of BH56 is connected with the common end of R6 and R16, the collector and protection electricity of BH56
Resistance R15 is connected；Protection diode D1 anode be connected with the resistance R6 of four arm electrical bridge, the cathode of protection diode D1 and
The voltage of 15V is connected.
8. a kind of resistance vacuum transmitter as claimed in claim 6, which is characterized in that the bridge unit includes HA17741
Chip, BH56 transistor, four arm electrical bridge resistance, the first input resistance R14, the second input resistance R2, protective resistance R15 and guarantor
Protect diode D1；Wherein, forward and reverse input terminal of the HA17741 chip is electric with the input of the second input resistance R2 and first respectively
R14 is hindered to be connected, the first input resistance R14 in four arm electrical bridge R11 and the common end regulated of resistance vacuum be connected, second is defeated
The other end for entering resistance R2 is connected with the common end of resistance R17 and resistance R18, the output end of the HA17741 chip with
The base stage of BH56 transistor is connected, and the emitter of BH56 is connected with the common end of R6 and R16, the collector and protection electricity of BH56
Resistance R15 is connected；Protection diode D1 anode be connected with the resistance R6 of four arm electrical bridge, the cathode of protection diode D1 and
The voltage of 15V is connected.
9. a kind of resistance vacuum transmitter as described in claim 1, which is characterized in that the resistance vacuum transmitter further includes
Analogue output unit；Micromonitor system reception calculates vacuum degree after the digital voltage signal that analog-digital commutator is collected, defeated
It is shown, and is exported simultaneously to analogue output unit to display device out, linear analogue letter is generated by analogue output unit
Number, the analog signal of the analogue output unit output is current signal or voltage signal.
10. a kind of resistance vacuum transmitter as described in claim 1, which is characterized in that the resistance vacuum transmitter also wraps
Communication device is included, the communication device is connected with micromonitor system, realizes the communication of resistance vacuum transmitter and peripheral equipment.
11. a kind of resistance vacuum transmitter as claimed in claim 10, which is characterized in that the communication device is RS485.
12. a kind of resistance vacuum transmitter as described in claim 10-11 any claim, which is characterized in that described micro-
Control device is STC89C54RD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610130401.8A CN105699007B (en) | 2016-03-08 | 2016-03-08 | A kind of resistance vacuum transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610130401.8A CN105699007B (en) | 2016-03-08 | 2016-03-08 | A kind of resistance vacuum transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105699007A CN105699007A (en) | 2016-06-22 |
| CN105699007B true CN105699007B (en) | 2019-02-12 |
Family
ID=56220958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610130401.8A Active CN105699007B (en) | 2016-03-08 | 2016-03-08 | A kind of resistance vacuum transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105699007B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2337545Y (en) * | 1998-07-17 | 1999-09-08 | 中国科学技术大学 | Intelligent superhigh vacuum cold cathode ionization gauge controller |
| CN101055686A (en) * | 2007-04-20 | 2007-10-17 | 北京航空航天大学 | Digital display board |
| CN102494836A (en) * | 2011-11-29 | 2012-06-13 | 成都国光电气股份有限公司 | Thermocouple vacuum meter |
| CN202547862U (en) * | 2012-03-02 | 2012-11-21 | 成都中科唯实仪器有限责任公司 | Double-resistance single-ionization compound vacuum gauge |
| CN202836870U (en) * | 2012-10-29 | 2013-03-27 | 成都捷康特科技有限公司 | Compound vacuum gauge |
| CN103557991A (en) * | 2013-11-11 | 2014-02-05 | 姚文利 | Method and device for calibrating vacuum gauge for measuring pressure |
| CN105170939A (en) * | 2015-08-14 | 2015-12-23 | 厦门理工学院 | Vacuum machine |
| CN205642725U (en) * | 2016-03-08 | 2016-10-12 | 成都国光电气股份有限公司 | Resistance vacuum transmitter |
-
2016
- 2016-03-08 CN CN201610130401.8A patent/CN105699007B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2337545Y (en) * | 1998-07-17 | 1999-09-08 | 中国科学技术大学 | Intelligent superhigh vacuum cold cathode ionization gauge controller |
| CN101055686A (en) * | 2007-04-20 | 2007-10-17 | 北京航空航天大学 | Digital display board |
| CN102494836A (en) * | 2011-11-29 | 2012-06-13 | 成都国光电气股份有限公司 | Thermocouple vacuum meter |
| CN202547862U (en) * | 2012-03-02 | 2012-11-21 | 成都中科唯实仪器有限责任公司 | Double-resistance single-ionization compound vacuum gauge |
| CN202836870U (en) * | 2012-10-29 | 2013-03-27 | 成都捷康特科技有限公司 | Compound vacuum gauge |
| CN103557991A (en) * | 2013-11-11 | 2014-02-05 | 姚文利 | Method and device for calibrating vacuum gauge for measuring pressure |
| CN105170939A (en) * | 2015-08-14 | 2015-12-23 | 厦门理工学院 | Vacuum machine |
| CN205642725U (en) * | 2016-03-08 | 2016-10-12 | 成都国光电气股份有限公司 | Resistance vacuum transmitter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105699007A (en) | 2016-06-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207742258U (en) | A kind of loop resistance detection device for high-voltage circuitbreaker | |
| CN203241165U (en) | Thermal resistor temperature measurement circuit based on three-wire system | |
| CN104062507A (en) | Battery internal resistance measuring instrument | |
| CN101655408A (en) | Detection circuit for non-common mode voltage strain bridge signal | |
| CN205642725U (en) | Resistance vacuum transmitter | |
| CN103901256A (en) | Novel lightning stroke current measuring device | |
| CN105699007B (en) | A kind of resistance vacuum transmitter | |
| CN204758675U (en) | Digital potentiometer | |
| CN103528492A (en) | Signal converter of high-measurement-range submicron-level high-precision LVDT (linear variable differential transformer) displacement sensor | |
| CN105005337A (en) | Digital temperature measuring and controlling instrument circuit | |
| CN201421653Y (en) | Wireless data acquisition unit | |
| CN102955070A (en) | Resistance measuring circuit | |
| CN202393834U (en) | Precise ohmic internal resistance measurer for battery | |
| CN203117697U (en) | Current monitoring module | |
| CN109540313A (en) | A kind of linear temperature measurement circuit based on silicon-based diode and NTC thermistor | |
| CN203705550U (en) | Thermistor tester | |
| CN201788237U (en) | Handheld electric wave recording analyzer | |
| CN202502157U (en) | Apparatus for measuring resistance-type parameter and equipment voltage | |
| CN205229184U (en) | Piezoelectric acceleration sensor signal conversion circuit of electric current source forcing | |
| CN205845269U (en) | Transformator running temperature pressure out-of-limit alarming device | |
| CN202330515U (en) | Multi-measuring range current measurement parallel display unit | |
| CN207280674U (en) | A kind of measuring circuit of vacuum instrument | |
| CN203564226U (en) | Novel blood pressure sensor | |
| CN204730977U (en) | The pressure unit for electrical stability can be promoted | |
| CN207741885U (en) | A kind of high accuracy pressure transmitter with the reversed protection of power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |