CN209543178U - A kind of digital regulation resistance - Google Patents
A kind of digital regulation resistance Download PDFInfo
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- CN209543178U CN209543178U CN201920448231.7U CN201920448231U CN209543178U CN 209543178 U CN209543178 U CN 209543178U CN 201920448231 U CN201920448231 U CN 201920448231U CN 209543178 U CN209543178 U CN 209543178U
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- resistance
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- controller
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Abstract
The utility model discloses a kind of digital regulation resistance, including power supply, controller and at least two-way resistance via, two ports of access are all had per resistance via all the way, include: several resistance branch being sequentially connected in series per resistance via all the way；It is parallel in each resistance branch and can be by the relay of resistance branch short circuit；Relay on controller and each resistance branch is by power supply power supply, controller is connected with by power supply power supply and respectively with the one-to-one relay drive unit of each relay, and controller individually controls the cut-off/close movement of each corresponding relay by each relay drive unit.The utility model has the following advantages that and effect: being controlled using relay, having the advantages that can be larger by Current Voltage, while having multiplexer channel come the needs of meeting multichannel while exporting.
Description
Technical field
The utility model relates to electronic circuit technology field, in particular to a kind of digital regulation resistance.
Background technique
During the continuous development of electronic technology, always exists and how to realize ask numerically controlled to resistance progress
Topic, current general solution are to use all kinds of integrated IC chip class adjustable resistances, but these chip quasi-resistances are not only adjustable
Gear number is very limited, and due to being IC chip quasi-resistance, is only used for light current circuit, such usual resistance performance voltage only has
± 5V, for most of control circuits (many to require at least to be operable within the scope of ± 15V), such operating condition limits ratio
It is harsher, it is not able to satisfy the requirement that a part of circuit is adjusted.And these IC chip quasi-resistances single channel output design there is also
Limitation.
Utility model content
The purpose of the utility model is to provide a kind of digital regulation resistances, are controlled using relay, and electricity can be passed through by having
Galvanic electricity presses larger advantage, while having multiplexer channel come the needs of meeting multichannel while exporting.
The above-mentioned technical purpose of the utility model has the technical scheme that a kind of digital regulation resistance,
Including power supply, controller and at least two-way resistance via, two ports of access are all had per the resistance via described all the way,
Include: per the resistance via described all the way
Several resistance branch being sequentially connected in series；
It is parallel in each resistance branch and can be by the relay of resistance branch short circuit；
Relay on the controller and each resistance branch by power supply power supply, the controller be connected with by
Power supply power supply and respectively with the one-to-one relay drive unit of each relay, the controller passes through each relay driving
Unit individually controls the cut-off/close movement of each relay.
Be further arranged to: each resistance branch passes through series/parallel by a resistance or at least two resistance
It is composed.
Be further arranged to: each relay includes common end, normally-closed contact and normally opened contact, each described
One end, its normally-closed contact or the normally opened contact that the common end of relay is all connected to corresponding resistance branch are connected to corresponding resistance
The other end of branch.
Be further arranged to: the quantity of the resistance via is two-way.
It is further arranged to: including 23 resistance branch being sequentially connected in series per the resistance via described all the way.
1, this digital regulation resistance can preferably solve the problems, such as proposed in background technique, and be able to satisfy most systems work
Make the requirement of environment, simultaneously because the design of itself versatility, not only the resistance value on each branch resistance is adjustable, but also resistance is logical
The resistance value in road is also adjustable, it can realizes the resistance value of entire digital regulation resistance and the change of resistance step value.
2, the control to each resistance branch is realized in this digital regulation resistance using relay, is had digital controlled signal
It the advantages of with resistance output signal isolation, is applicable under the working environment of various voltage requirements.
3, this digital regulation resistance have two-way resistance via for users to use, two-way resistance via can simultaneously output resistance,
Allow user that can use two-way resistance simultaneously, it is more convenient.The design of double resistance vias not only extends practicability, and two opposite
Single pass digital regulation resistance has the advantage for saving electronic component, and can reduce production cost.
4, this digital regulation resistance controls the cut-off/close movement of relay using controller and relay drive unit,
It is directly controlled using the I/O of controller, the circuit structure of hardware controls can not only be simplified, and each resistance can be completely solved
The digital control problem of branch.
Detailed description of the invention
Fig. 1 is the functional block diagram of embodiment；
Fig. 2 is the circuit diagram of controller in embodiment；
Fig. 3 is the circuit diagram of relay drive unit in the channel one of embodiment；
Fig. 4 is the circuit diagram of relay drive unit in the channel two of embodiment；
Fig. 5 is relay and the circuit diagram of resistance branch in the channel one of embodiment；
Fig. 6 is relay and the circuit diagram of resistance branch in the channel two of embodiment.
In figure: 1, power supply；2, controller；3, relay drive unit；4, relay；5, resistance branch.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
As shown in Figures 1 to 6, a kind of digital regulation resistance, including power supply 1, controller 2 and two-way resistance via, two-way electricity
Hindering channel is respectively channel one and channel two, and channel one and channel two all have two ports (channel as shown in Figure 5 of access
J2 terminal in channel two shown in J1 terminal and Fig. 6 in one), channel one and channel two include:
23 resistance branch 5 being sequentially connected in series；
It is parallel in each resistance branch 5 and can be by the relay 4 of 5 short circuit of resistance branch；
Relay 4 on controller 2 and each resistance branch 5 is powered by power supply 1, and controller 2 is connected with to be supplied by power supply 1
Electricity and respectively with the one-to-one relay drive unit 3 of each relay 4, controller 2 by each relay drive unit 3 individually
Each corresponding relay 4 of control cut-off/close movement.
Specifically:
Power supply 1 is powered by external power supply module, as the prior art of electronic field, see also in university teaching
The power unit of analog circuit, is no longer illustrated herein.
Each resistance branch 5 is composed of a resistance or at least two resistance by series/parallel, is specifically referred to
Each resistance in Fig. 5 and Fig. 6；
Controller 2 uses STM32 monolithic, and peripheral circuit diagram can refer to Fig. 2；
The enable end of controller 2 is connected with each relay drive unit 3 in channel one and channel two to control, relay
The peripheral circuit diagram of driving unit 3 can refer to Fig. 3 and Fig. 4, and relay drive unit 3 includes a relay driving IC, type
Number it is 8023S, controller 2 can be realized using digital signal by relay drive unit 3 and control the disconnected of corresponding relay 4
Opening/closing conjunction movement.
Each relay 4 includes common end, normally-closed contact and normally opened contact, and the common end of the relay 4 is all connected with
The other end of corresponding resistance branch 5 is connected in one end, its normally-closed contact or the normally opened contact of corresponding resistance branch 5.Its
In, relay 4 uses hilted broadsword relay or two keys relay, uses two keys relay, model in the present embodiment
HFD4/005-L, with reference to Fig. 5 and Fig. 6, the common end 3,6 of any relay 4 is shorted and is connected to one end of resistance branch 5, should
The normally opened contact 2,7 of relay 4 is hanging, and the normally-closed contact 4,5 of the relay 4 is shorted and is connected to the another of resistance branch 5
End, the 8 of the relay 4,1 pin connects corresponding relay drive unit 3.
The working principle of the present embodiment are as follows: J1 terminal and/or J2 terminal are accessed in the circuit of demand and (need binary channels
J1 and J2 terminal then is accessed simultaneously, single channel is needed then need to only to access J1 or J2 terminal), believed by the number of controller 2
It number drives the relay drive unit 3 to work, and is moved by the cut-off/close that relay drive unit 3 controls corresponding relay 4
Make, whether thus carrying out the short circuit of each resistance branch 5 in control channel one and/or channel two, by controlling in each resistance branch 5
Relay 4 adjust the overall resistance of resistance via.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (5)
1. a kind of digital regulation resistance, which is characterized in that each including power supply (1), controller (2) and at least two-way resistance via
Resistance via described in road all has two ports of access, includes: per the resistance via described all the way
Several resistance branch (5) being sequentially connected in series；
It is parallel on each resistance branch (5) and can be by the relay (4) of resistance branch (5) short circuit；
Relay (4) on the controller (2) and each resistance branch (5) is powered by power supply (1), the controller
(2) it is connected with by power supply (1) power supply and respectively with the one-to-one relay drive unit (3) of each relay (4), it is described
Controller (2) individually controls the cut-off/close movement of each corresponding relay (4) by each relay drive unit (3).
2. a kind of digital regulation resistance according to claim 1, it is characterised in that: each resistance branch (5) is by one
A resistance or at least two resistance are composed by series/parallel.
3. a kind of digital regulation resistance according to claim 1, it is characterised in that: each relay (4) includes public affairs
The common end of end, normally-closed contact and normally opened contact altogether, each relay (4) is all connected to corresponding resistance branch (5)
One end, its normally-closed contact or normally opened contact are connected to the other end of corresponding resistance branch (5).
4. a kind of digital regulation resistance according to claim 1, it is characterised in that: the quantity of the resistance via is two
Road.
5. a kind of digital regulation resistance according to claim 1, it is characterised in that: include per the resistance via described all the way
23 resistance branch (5) being sequentially connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920448231.7U CN209543178U (en) | 2019-04-03 | 2019-04-03 | A kind of digital regulation resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920448231.7U CN209543178U (en) | 2019-04-03 | 2019-04-03 | A kind of digital regulation resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209543178U true CN209543178U (en) | 2019-10-25 |
Family
ID=68275962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920448231.7U Active CN209543178U (en) | 2019-04-03 | 2019-04-03 | A kind of digital regulation resistance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209543178U (en) |
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2019
- 2019-04-03 CN CN201920448231.7U patent/CN209543178U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 289 and 291, Binhai Second Road, Wenzhou Economic and Technological Development Zone, Zhejiang Province, 325000 Patentee after: Zhejiang Changjiang Automobile Electronics Co.,Ltd. Address before: No.289, Binhai 2nd Road, Wenzhou Economic and Technological Development Zone, Zhejiang Province 325000 Patentee before: WENZHOU CHANGJIANG AUTOMOBILE ELECTRONIC SYSTEM Co.,Ltd. |
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| CP03 | Change of name, title or address |