CN2742678Y - Data adaptor with isolated power supply mould group - Google Patents
Data adaptor with isolated power supply mould group Download PDFInfo
- Publication number
- CN2742678Y CN2742678Y CN 200420067882 CN200420067882U CN2742678Y CN 2742678 Y CN2742678 Y CN 2742678Y CN 200420067882 CN200420067882 CN 200420067882 CN 200420067882 U CN200420067882 U CN 200420067882U CN 2742678 Y CN2742678 Y CN 2742678Y
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- CN
- China
- Prior art keywords
- power supply
- signal
- mould group
- switch
- multiplex
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a data adaptor with an isolated power supply mould group, comprising a multiplex switch which is composed of a plurality of data channels, a signal isolated changeover mould group which is arranged on the data output port of the multiplex switch, and a power supply mould group, wherein, the power supply mould group is composed of two sets of direct current power supply circuits which can respectively supply the multiplex switch and the signal isolated changeover mould group with the direct current working power source; since the two sets of the direct current power supply circuits are not jointly connected with the ground, so the power source noise can not disturb the signal delivered by the signal isolated changeover mould group, and the accuracy of the received signal of the next stage can be ensured.
Description
[technical field]
The utility model refers to a kind of data adapter unit of power supply module power supply to avoid methd of power supply random signal to disturb that is not total to ground connection with duplicate supply especially about a kind of data adapter unit with isolated power supply module.
[background technology]
Signal form in the general communication system, be analog form under the transmission mode, the operation tupe is next to be digital form, thereby when signal enters the operation tupe by transmission mode, after must earlier analog-signal transitions being digital signal, delivering to operating system again and carry out signal analysis, processing.Moreover, the necessary usually data of handling most groups of operating system, multichannel switches and the data adapter unit of A/D conversion function carries out previous operations to signal so must possess by one.
A kind of organigram of existing data adapter unit as shown in Figure 6, it includes:
One multiplex's switch (70) has eight groups of signal input channel CH1～CH8, and each is organized signal input channel CH1～CH8 and is made up of a pair of positive and negative terminal respectively, and each positive and negative terminal is connected to the sub-A of pair of output, B jointly by an analog switch (71) respectively; Wherein by a decoder (72) control and conducting whether each analog switch (71) delivers to next stage by the signal of that passage via lead-out terminal A, B with decision;
One analog/digital converter (80) connects lead-out terminal A, the B of above-mentioned multiplex's switch (70), after the analog signal conversion of being sent by lead-out terminal A, B is digital form, delivers to next stage again;
One power supply module (90) is supplied dc supply respectively and is given above-mentioned multiplex's switch (70) and analog/digital converter (80).
Switch and the A/D translation function though above-mentioned data adapter unit possesses the multiplex (MUX) of a plurality of passages, prevent in the measure then obviously distribution to the greatest extent in the interference of signal;
Suppose that first group of input channel CH1 is conducting state, all the other are respectively organized input channel CH2～CH8 and are all and end, then the input channel of this conducting is disturbed by various noises still may, for example static, the electromagnetic wave (EMI) that produces of electronic equipment or the surging of power supply generation itself etc. on every side.Aspect the transmission media of noise, because multiplex's switch (70), analog/digital converter (80) are by power supply module (90) power supply and common ground, in case noise appears in the passage or the power supply of multiplex's switch (70), promptly via altogether analog/digital converter (80) and its rear end being caused interference.
So relevant above-mentioned data converter still remains further to be improved.
[summary of the invention]
Therefore, the utility model main purpose provides a kind of with many power supplys and the data converter of the power supply module of ground connection power supply to avoid methd of power supply random signal to disturb altogether not.
For achieving the above object, the utility model provides a kind of data adapter unit, includes:
One multiplex's switch has a plurality of signal input channels and an output port, and wherein a plurality of signal input channels can be by switching, by wherein an input channel and output port are connected;
One Signal Spacing conversion module is connected with the output port of above-mentioned multiplex's switch, in order to the analog signal of multiplex's switch output is carried out A/D conversion and Signal Spacing conversion;
One power supply module is made up of two groups of DC-DC power-switching circuits that are not total to ground connection, and it is supplied working power respectively and gives above-mentioned multiplex's switch and Signal Spacing conversion module.
Because above-mentioned data converter is powered respectively by two groups of DC-DC power-switching circuits that are not total to ground connection on the power supply module, so got rid of by transmitting the approach of noise altogether, disturbs and effectively reduce noise.
Above-mentioned power supply module can be formed into a module monomer, is able to the mode of can substituting and data converter and links.
[description of drawings]
Fig. 1 is the structure calcspar according to data converter of the present utility model.
Fig. 2 is the circuit diagram according to the power supply module in the data converter of the present utility model.
Fig. 3 is the circuit diagram according to the conversion of the Signal Spacing in the data converter of the present utility model module.
Fig. 4 is the user mode schematic diagram according to data converter of the present utility model.
Fig. 5 is the another user mode schematic diagram according to data converter of the present utility model.
Fig. 6 is the structure calcspar of existing data adapter unit.
[embodiment]
Relevant structure division of the present utility model at first sees also shown in Figure 1ly, and its circuit structure includes:
One multiplex's switch (10), have a plurality of signal input channel CH1～CHn and an output port A, B, wherein a plurality of signal input channel CH1～CHn can select by a wherein input channel and output port A, B connection by switching, and the signal that order is sent into by this signal input channel is sent through outbound port A, B.Because multiplex's switch (10) is a well known elements, and the main target of non-the utility model place, holds and further do not give unnecessary details its structure.
One Signal Spacing conversion module (20) is connected with output port A, the B of above-mentioned multiplex's switch, in order to the analog signal of multiplex's switch (10) output is carried out A/D conversion and Signal Spacing conversion;
One power supply module (30) provides two group DC power supply, and above-mentioned multiplex's switch (10) and Signal Spacing conversion module (20) are given in supply respectively; Wherein:
The circuit structure of this power supply module (30) sees also shown in Figure 2, it is made up of two groups of DC-DC power supply changeover devices (31) and (32), its the two convert system's DC power supply (in the present embodiment being 24 volts) DC power supply of different magnitudes of voltage to (in the present embodiment respectively, be respectively ± 12V and VCC), and the output of the two is not for being total to ground connection.In the present embodiment, this DC-DC power supply changeover device (32) is the working power to Signal Spacing conversion module (20).
The concrete structure of relevant this Signal Spacing conversion module (20) sees also shown in Figure 3ly, and it includes an analog/digital converter (21), organizes optical coupler (22)～(24) more, a gate (25) and one direct current/dc power converter (40); Wherein:
The DC power supply VCC of above-mentioned DC-DC power supply changeover device (32) output is supplied to optical coupler (22), gate (25) and another DC-DC power supply changeover device (40) respectively, powers after DC-DC power supply changeover device (40) is done DC power supply VCC further to change again and gives analog/digital converter (21) and other optical couplers (22)～(24).
As shown in the above description, the utility model is to power respectively with the power supply module (30) that two groups of independent DC power supplies are formed to change module (20) for multiplex's switch (10) and Signal Spacing in the data adapter unit, because two DC-DC power supply changeover devices (31) (32) cause interference so can stop noise via the signal of altogether Signal Spacing being changed module (20) and its rear end in power supply module (30) not altogether.
See also shown in the Figure 4 and 5 again, be respectively the outside drawing of the utility model one possible embodiments, wherein above-mentioned power supply module (30) is constituted as the module monomer, power supply I/O end of two DC-DC power supply changeover devices is connected to a female connectors (33) on it, utilize this female connectors (33) to be plugged to data converter (100) and go up corresponding public connector (102), link thereby change module (the former two is all not shown in this figure) with multiplex's switch, the Signal Spacing of data adapter unit (100) inside for correspondence.
Can find out concrete structure kenel of the present utility model by above-mentioned explanation, its design mainly in utilizing the power supply module each independent and not altogether the DC power supply circuit of ground connection respectively the different device in the data transducer is powered, by the not isolation of ground connection altogether, multiplex's switch passage or power supply that easy generation noise is disturbed, unlikelyly noise is delivered to the rear end by common ground, and can further guarantee the accuracy of back end signal, and effectively reduce the possibility that noise disturbs.
Claims (3)
1, a kind of data converter with isolated power supply module, it includes at least:
One multiplex's switch has a plurality of signal input channels and an output port, and wherein a plurality of signal input channels are by switching, by wherein an input channel and output port are connected;
One Signal Spacing conversion module is connected with the output port of above-mentioned multiplex's switch, in order to the analog signal of multiplex's switch output is carried out A/D conversion and Signal Spacing conversion;
One power supply module, by independent more than one group and not altogether the DC power supply circuit of ground connection forms, change module for above-mentioned multiplex's switch and Signal Spacing with power supply respectively.
2, the data converter with isolated power supply module according to claim 1 is characterized in that, this power supply module is made up of two groups of DC-DC power supply changeover devices.
3, the data adapter unit with isolated power supply module according to claim 1 and 2, it is characterized in that, this power supply module is constituted as a module monomer, which is provided with a female connectors, and it is connected with the I/O end of two DC-DC power supply changeover devices respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420067882 CN2742678Y (en) | 2004-07-06 | 2004-07-06 | Data adaptor with isolated power supply mould group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420067882 CN2742678Y (en) | 2004-07-06 | 2004-07-06 | Data adaptor with isolated power supply mould group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2742678Y true CN2742678Y (en) | 2005-11-23 |
Family
ID=35478143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420067882 Expired - Fee Related CN2742678Y (en) | 2004-07-06 | 2004-07-06 | Data adaptor with isolated power supply mould group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2742678Y (en) |
-
2004
- 2004-07-06 CN CN 200420067882 patent/CN2742678Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: GLOBAL INVESTMENT LTD. Free format text: FORMER OWNER: JUTENG SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20060609 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060609 Address after: Hongkong, China Patentee after: Global Investment Consulting Co. Ltd. Address before: Taiwan County, Taipei, China Patentee before: Juteng Science & Technology Co., Ltd. |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |