CN106500752A - Programmable multichannel network resistance circuit - Google Patents
Programmable multichannel network resistance circuit Download PDFInfo
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- CN106500752A CN106500752A CN201611131773.9A CN201611131773A CN106500752A CN 106500752 A CN106500752 A CN 106500752A CN 201611131773 A CN201611131773 A CN 201611131773A CN 106500752 A CN106500752 A CN 106500752A
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- resistance
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- circuit module
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
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Abstract
The invention provides a kind of programmable multichannel network resistance circuit, including at least one circuit module, the circuit module includes the circuit unit being mutually in series, nominal resistance individually or between nominal resistance is connected and/or in parallel, so as to form the circuit unit, each described circuit unit is corresponding by a Control conducting or short circuit, if the quantity more than one of the circuit module, then circuit module described in more than one is mutually in series, and the resistance variations of circuit can be determined by the control and regulation to the relay.
Description
Technical field
A kind of the present invention relates to circuit field, more particularly to programmable multichannel network resistance circuit.
Background technology
In the prior art, the use of resistance sensor is increasingly extensive, and electric resistance sensor is a kind of line position machinery
Move or angular displacement input quantity is converted to the sensing element with its into resistance of certain functional relation or voltage output.
Such as, the fuel sensor of automobile instrument, is being entered to automobile instrument panel based on this mostly using resistance sensor
During row verification, need to be input into high-precision resistance signal, in prior art, especially in the detection field of automobile instrument, lack one
Plant and can be input into the means of necessary resistance according to demand.
Content of the invention
In order to solve above-mentioned technical problem, the invention provides a kind of programmable multichannel network resistance circuit,
Including at least one circuit module, the circuit module includes the circuit unit being mutually in series, and nominal resistance is individually or nominal electric
Series connection and/or parallel connection between resistance, so as to form the circuit unit, each described circuit unit is corresponding to be led by a Control
Logical or short-circuit, if the quantity more than one of the circuit module, circuit module described in more than one is mutually in series, the electricity of circuit
Resistiveization can be determined by the control and regulation to the relay.
Optionally, the circuit module includes mutually being in series thousands digit circuit module, hundreds circuit module, tens
At least one of circuit module and units circuit module, wherein：
The thousands digit circuit module includes some thousands digit circuit units being mutually in series, and nominal resistance therein is thousand
Digit resistance, the thousands digit resistance individually, or are connected between the thousands digit resistance and/or in parallel, so as to form the kilobit
Number circuit unit；
The hundreds circuit module includes some hundreds circuit units being mutually in series, and nominal resistance therein is hundred
Digit resistance, the hundreds resistance individually, or are connected between the hundreds resistance and/or in parallel, so as to form described hundred
Number circuit unit；
The tens circuit module includes some tens circuit units being mutually in series, and nominal resistance therein is ten
Digit resistance, the tens resistance individually, or are connected between the tens resistance and/or in parallel, so as to form described ten
Number circuit unit；
The units circuit module includes some units circuit units being mutually in series, and nominal resistance therein is individual
Digit resistance, the units resistance individually, or are connected between the units resistance and/or in parallel, so as to form described position
Number circuit unit.
Optionally, at least one of described circuit module can be shorted by short circuit cap.
Optionally, the circuit module also includes the decimal digits circuit module that connects in circuit, the decimal digits
Circuit module includes the decimal digits circuit unit being mutually in series, and nominal resistance therein is an Ohmic resistance, described one ohm
Resistance individually, or is connected between an Ohmic resistance and/or in parallel, so as to form the decimal digits circuit unit.
Optionally, the quantity of the decimal digits circuit unit is two.
Optionally, the connected mode of the preferred circuit in the different circuit units in each described circuit module is different.
Optionally, the resistance of the thousands digit resistance is 2000 ohm, and the resistance of the hundreds resistance is 200 ohm；
The resistance of the tens resistance is 20 ohm；The resistance of the units resistance is 2 ohm.
Optionally, the units circuit unit, tens circuit unit, hundreds circuit unit and thousands digit circuit list
The quantity of unit is four.
Optionally, the nominal resistance adopts Chip-R.
Optionally, the relay adopts photoelectric relay.
The present invention uses relay, can especially adopt the conducting of the photoelectric relay control resistance of low on-resistance and short
Road, using resistance, especially can consist of each section of resistance of 8421 codings using high-precision Chip-R series-parallel mode,
Increase passage handoff functionality using photoelectric relay and support multichannel resistance signal output.
Description of the drawings
Fig. 1 is the signal that may be programmed thousands digit circuit module in multichannel network resistance circuit in alternative embodiment of the present invention
Figure；
Fig. 2 is the signal that may be programmed hundreds circuit module in multichannel network resistance circuit in alternative embodiment of the present invention
Figure；
Fig. 3 is the signal that may be programmed tens circuit module in multichannel network resistance circuit in alternative embodiment of the present invention
Figure；
Fig. 4 is the signal that may be programmed units circuit module in multichannel network resistance circuit in alternative embodiment of the present invention
Figure；
Fig. 5 is to may be programmed showing for decimal digits circuit module in multichannel network resistance circuit in alternative embodiment of the present invention
It is intended to；
Fig. 6 is to may be programmed passage switching principle figure in multichannel network resistance circuit in alternative embodiment of the present invention.
Specific embodiment
Detailed retouching is carried out to the programmable multichannel network resistance circuit that the present invention is provided below with reference to Fig. 1 to Fig. 6
State, which is optional embodiment of the present invention, it is believed that those skilled in the art are not changing the model of spirit of the invention and content
In enclosing, which is modified and is polished.
Please comprehensive reference Fig. 1 to Fig. 6, the invention provides a kind of programmable multichannel network resistance circuit, including at least
One circuit module, the circuit module include that the circuit unit being mutually in series, nominal resistance individually or between nominal resistance are connected
And/or in parallel, so as to form the circuit unit, each described circuit unit is corresponding by a Control conducting or short
Road, if the quantity more than one of the circuit module, circuit module described in more than one is mutually in series, the resistance variations of circuit
Can be determined by the control and regulation to the relay.
Furthermore, it is understood that the connected mode of preferred circuit in different circuit units in each described circuit module is not
With.Further, by the control of corresponding relay, it is possible to achieve different resistance configurations.
It has also been found that, in some schemes, can be connected in series using electromagnetic relay or analog switch control
The conducting of plug-in type wire resistor and short circuit are come the resistance required for exporting.
However, the on-off times of electromagnetic relay are limited, service life is short, wire resistor and electromagnetic relay are grafting
Part, be difficult to change, inconvenience is brought to the maintenance of equipment；Accurate wire resistor has that volume is big, price is high and buying is difficult
The shortcomings of.Analog switch has larger conducting resistance so as to causing than larger accumulated error, it is impossible to meet required precision；This
Outward, as the switch noise of electromagnetic relay, on-off times are limited and the long response time, it is impossible to which quickly output is continuous
The resistance signal of change so that cannot be scanned detection to fuel gauge.
For this purpose, in the preferred embodiment of the invention, the nominal resistance adopts Chip-R.The relay adopts light
Electrical relay, furthermore, it is understood that using photoelectric relay PVN012ASPbF C connection (i.e. the 4th pin and the 6th pin of chip is short
Connect) controlling the conducting or short circuit of the resistance being in parallel therewith.Using the photoelectricity that conducting resistance is lower and the response time is shorter after
Electrical equipment substitutes traditional electromagnetic relay, and the conducting resistance of the photoelectric relay that the present invention is selected is maximum to only have 15m Ω, during response
Between be less than 1 millisecond, and the conducting resistance of general electromagnetic relay is 50m Ω, and the response time is 5 milliseconds.Using one thousandth essence
The Chip-R of degree substitutes the wire resistor of plug-in type, and constitutes 8421 codings with a kind of nominal resistance by series-parallel mode
Other resistances.Photoelectric relay is connected on wiring board using paster encapsulation.Resistance via is carried out using photoelectric relay
Switching.
It can be seen that, compared with prior art, the invention has the beneficial effects as follows, photoelectric relay conducting resistance is low so as to exporting electricity
Resistance high precision, limits so as to long service life without on-off times, and fast response time is such that it is able to quickly output consecutive variations
Swept resistance signal, little and easy to maintenance so as to take up room using Chip-R and paster relay, using nominal resistance
And connection in series-parallel combination increases passage handoff functionality and can meet multiple signals output so as to purchase conveniently.
Fig. 1 to Fig. 5 is refer to, the circuit module includes thousands digit circuit module, the hundreds circuit mould being mutually in series
At least one of block, tens circuit module and units circuit module, wherein：
Fig. 1 is refer to, the thousands digit circuit module includes some thousands digit circuit units being mutually in series, mark therein
Resistance is called thousands digit resistance, and the thousands digit resistance individually, or is connected between the thousands digit resistance and/or in parallel, so as to shape
Into the thousands digit circuit unit；For in conjunction with Fig. 1, resistance R1 to R9, and relay U43 to U46, the electricity is which employs
At least one of road module can be shorted by short circuit cap.In the embodiment that Fig. 1 illustrates, its thousands digit circuit module is then matched somebody with somebody
Short circuit cap JUMPER is put.Additionally, the resistance of the thousands digit resistance is 2000 ohm, the quantity of thousands digit circuit unit is
Four.For further, the resistance of thousands digit is all by the nominal precision resistance connection in series-parallel that thousand-island forest park resistance is 2K
Composition.Additionally, when the Standard resistance range for needing is less than 1000 ohm, thousands digit can by short circuit cap come short circuit saving into
This.
Fig. 2 is refer to, the hundreds circuit module includes some hundreds circuit units being mutually in series, mark therein
Resistance is called hundreds resistance, and the hundreds resistance individually, or is connected between the hundreds resistance and/or in parallel, so as to shape
Into the hundreds circuit unit；For in conjunction with Fig. 2, resistance R19 to R42, and relay U47 to U50 is which employs.This
Outward, the resistance of the hundreds resistance is 200 ohm, and the quantity of hundreds circuit unit is four.Furthermore, it is understood that hundreds
Resistance is all made up of the nominal precision resistance connection in series-parallel that thousand-island forest park resistance is 200 ohm.
Fig. 3 is refer to, the tens circuit module includes some tens circuit units being mutually in series, mark therein
Resistance is called tens resistance, and the tens resistance individually, or is connected between the tens resistance and/or in parallel, so as to shape
Into the tens circuit unit；For in conjunction with Fig. 3, resistance R67 to R75, and relay U51 to U54 is which employs.This
Outward, the resistance of the tens resistance is 20 ohm, and the quantity of tens circuit unit is four.For further, ten
Number resistance is all made up of the nominal precision resistance connection in series-parallel that thousand-island forest park resistance is 20 ohm.
The units circuit module includes some units circuit units being mutually in series, and nominal resistance therein is individual
Digit resistance, the units resistance individually, or are connected between the units resistance and/or in parallel, so as to form described position
Number circuit unit.For in conjunction with Fig. 4, resistance R85 to R93, and relay U55 to U58 is which employs.The units resistance
Resistance be 2 ohm, the quantity of units circuit unit is four.For further, units resistance is all by percent
One precision resistance is 2 ohm of nominal precision resistance connection in series-parallel composition.
Fig. 5 is refer to, the circuit module also includes the decimal digits circuit module that connects in circuit, the decimal place
Number circuit modules include the decimal digits circuit unit that is mutually in series, and nominal resistance therein is an Ohmic resistance, an Europe
Nurse resistance individually, or is connected between an Ohmic resistance and/or in parallel, so as to form the decimal digits circuit unit.In conjunction with
For Fig. 5, resistance R103 to R108, and relay U59 and U60 is which employs.It can be seen that, the decimal digits circuit unit
Quantity is two.For further, decimal place resistance is all by the nominal precision resistance that one of percentage precision resistance is 1 ohm
Connection in series-parallel is constituted.
It is also pointed out that, relevant above circuit module, the quantity of resistance and series-parallel system employed in its circuit unit, no
It is limited to meaning shown in figure, which has been merely given as an alternative.
Fig. 6 is refer to, is switched about the passage based on above circuit, the circuit that may be referred to the figure is understood, which leads to
Cross two photoelectric relay PVN012ASPbF (U79, U80) 1 channel network resistance (R2_IN) be multiplexed with 2 passages (R2 and
R3).
In sum, the present invention uses relay, can especially adopt the photoelectric relay control resistance of low on-resistance
Conducting and short circuit, using resistance, especially can constitute 8421 codings using high-precision Chip-R by series-parallel mode
Each section of resistance, increases passage handoff functionality using photoelectric relay and supports multichannel resistance signal output.
Claims (10)
1. a kind of programmable multichannel network resistance circuit, it is characterised in that：Including at least one circuit module, the circuit mould
Block includes the circuit unit being mutually in series, and nominal resistance individually or between nominal resistance is connected and/or in parallel, described so as to be formed
Circuit unit, each described circuit unit are corresponding by a Control conducting or short circuit, if the quantity of the circuit module
More than one, then circuit module described in more than one be mutually in series, the resistance variations of circuit can be by the relay
Control and regulation determine.
2. multichannel network resistance circuit may be programmed as claimed in claim 1, it is characterised in that：The circuit module includes mutually
In the thousands digit circuit module, hundreds circuit module, tens circuit module and the units circuit module that are in series at least it
One, wherein：
The thousands digit circuit module includes some thousands digit circuit units being mutually in series, and nominal resistance therein is thousands digit
Resistance, the thousands digit resistance individually, or are connected between the thousands digit resistance and/or in parallel, so as to form the thousands digit electricity
Road unit；
The hundreds circuit module includes some hundreds circuit units being mutually in series, and nominal resistance therein is hundreds
Resistance, the hundreds resistance individually, or are connected between the hundreds resistance and/or in parallel, so as to form the hundreds electricity
Road unit；
The tens circuit module includes some tens circuit units being mutually in series, and nominal resistance therein is tens
Resistance, the tens resistance individually, or are connected between the tens resistance and/or in parallel, so as to form the tens electricity
Road unit；
The units circuit module includes some units circuit units being mutually in series, and nominal resistance therein is units
Resistance, the units resistance individually, or are connected between the units resistance and/or in parallel, so as to form the units electricity
Road unit.
3. multichannel network resistance circuit may be programmed as claimed in claim 1 or 2, it is characterised in that：In the circuit module
At least one can be shorted by short circuit cap.
4. multichannel network resistance circuit may be programmed as claimed in claim 1 or 2, it is characterised in that：The circuit module is also
Including series connection decimal digits circuit module in circuit, the decimal digits circuit module includes the decimal digits being mutually in series
Circuit unit, nominal resistance therein are an Ohmic resistance, and an Ohmic resistance is independent, or connects between an Ohmic resistance
And/or in parallel, so as to form the decimal digits circuit unit.
5. multichannel network resistance circuit may be programmed as claimed in claim 4, it is characterised in that：The decimal digits circuit list
The quantity of unit is two.
6. multichannel network resistance circuit may be programmed as claimed in claim 1 or 2, it is characterised in that：Each described circuit mould
The connected mode of the preferred circuit in different circuit units in block is different.
7. multichannel network resistance circuit may be programmed as claimed in claim 2, it is characterised in that：The resistance of the thousands digit resistance
It is worth for 2000 ohm, the resistance of the hundreds resistance is 200 ohm；The resistance of the tens resistance is 20 ohm；Described
The resistance of units resistance is 2 ohm.
8. multichannel network resistance circuit may be programmed as claimed in claim 2, it is characterised in that：The units circuit list
The quantity of unit, tens circuit unit, hundreds circuit unit and thousands digit circuit unit is four.
9. multichannel network resistance circuit may be programmed as claimed in claim 1, it is characterised in that：The nominal resistance is using patch
Sheet resistance.
10. multichannel network resistance circuit may be programmed as claimed in claim 1, it is characterised in that：The relay adopts light
Electrical relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611131773.9A CN106500752A (en) | 2016-12-09 | 2016-12-09 | Programmable multichannel network resistance circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611131773.9A CN106500752A (en) | 2016-12-09 | 2016-12-09 | Programmable multichannel network resistance circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106500752A true CN106500752A (en) | 2017-03-15 |
Family
ID=58330084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611131773.9A Pending CN106500752A (en) | 2016-12-09 | 2016-12-09 | Programmable multichannel network resistance circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN106500752A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040196020A1 (en) * | 2002-04-01 | 2004-10-07 | Chun-Mai Liu | Variable impedance network with coarse and fine controls |
| CN103759757A (en) * | 2013-12-21 | 2014-04-30 | 柳州航盛科技有限公司 | Test device of combined instrument of automobile |
| CN105575570A (en) * | 2015-11-09 | 2016-05-11 | 上海凌翼动力科技有限公司 | Wide-range digital rapid infinitely-adjustable resistor device |
| CN205582652U (en) * | 2016-05-06 | 2016-09-14 | 洛阳银杏科技有限公司 | Compensation hardware error influence's high accuracy passive resistance generator |
| CN205691626U (en) * | 2016-06-17 | 2016-11-16 | 鹤壁华盛监控设备制造有限公司 | Programme control precision resistance box |
| CN206258128U (en) * | 2016-12-09 | 2017-06-16 | 上海仪电汽车电子系统有限公司 | Programmable multichannel network resistance circuit |
-
2016
- 2016-12-09 CN CN201611131773.9A patent/CN106500752A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040196020A1 (en) * | 2002-04-01 | 2004-10-07 | Chun-Mai Liu | Variable impedance network with coarse and fine controls |
| CN103759757A (en) * | 2013-12-21 | 2014-04-30 | 柳州航盛科技有限公司 | Test device of combined instrument of automobile |
| CN105575570A (en) * | 2015-11-09 | 2016-05-11 | 上海凌翼动力科技有限公司 | Wide-range digital rapid infinitely-adjustable resistor device |
| CN205582652U (en) * | 2016-05-06 | 2016-09-14 | 洛阳银杏科技有限公司 | Compensation hardware error influence's high accuracy passive resistance generator |
| CN205691626U (en) * | 2016-06-17 | 2016-11-16 | 鹤壁华盛监控设备制造有限公司 | Programme control precision resistance box |
| CN206258128U (en) * | 2016-12-09 | 2017-06-16 | 上海仪电汽车电子系统有限公司 | Programmable multichannel network resistance circuit |
Non-Patent Citations (1)
| Title |
|---|
| 李小文 等: "基于FPGA的可编程电阻装置设计", 《铁道机车车辆》 * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170315 |
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| RJ01 | Rejection of invention patent application after publication |