WO2015028012A1 - Elektronische mehrkanalumschalteinrichtung - Google Patents
Elektronische mehrkanalumschalteinrichtung Download PDFInfo
- Publication number
- WO2015028012A1 WO2015028012A1 PCT/DE2014/200361 DE2014200361W WO2015028012A1 WO 2015028012 A1 WO2015028012 A1 WO 2015028012A1 DE 2014200361 W DE2014200361 W DE 2014200361W WO 2015028012 A1 WO2015028012 A1 WO 2015028012A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- input
- output
- transistors
- transistor
- terminal
- 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.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
- H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors
- H03K17/6221—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors combined with selecting means
- H03K17/6228—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors combined with selecting means using current steering means
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/002—Switching arrangements with several input- or output terminals
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
- H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors
- H03K17/6257—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors with several inputs only combined with selecting means
- H03K17/6264—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors with several inputs only combined with selecting means using current steering means
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
- H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors
- H03K17/6285—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors with several outputs only combined with selecting means
- H03K17/6292—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors with several outputs only combined with selecting means using current steering means
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
- H03K17/687—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being field-effect transistors
- H03K17/693—Switching arrangements with several input- or output-terminals, e.g. multiplexers, distributors
Definitions
- the invention relates to a multi-channel electronic switching device in a motor vehicle.
- the present invention has the object to provide a multi-channel electronic switching device for a motor vehicle, which avoids the disadvantages mentioned and allows for low signal attenuation and the lowest possible system noise a structurally simple as possible realization.
- the object is achieved with the features of the invention according to claim 1.
- the dependent claims 2 to 10 relate to advantageous embodiments of the invention.
- a multichannel electronic switching device having either a plurality of parallel input signal lines and one or more output signal lines or one or more input signal lines, wherein each of the input signal lines comprises a bipolar input transistor each having a base terminal, a collector terminal and an emitter terminal wherein each of the input signal lines is connected to the base terminal of each of an input transistor, the emitter terminals of the input transistors are connected to a common ground potential terminal, wherein the collector terminals of the input transistors are connected to a common main signal conductor and wherein each input transistor by means of an input switching signal via a Input switching signal line from a signal blocking state in a sig nal structuriden state can be transferred, wherein in the presence of at least two output signal lines of each output signal line, a bipolar output transistor, each having a base terminal, a collector terminal and a
- Emitter terminal is assigned, wherein the emitter terminals of the output transistors are connected to the common main signal conductor, wherein each of the output signal lines is connected to a collector terminal of an output transistor, wherein the base terminals of the output transistors are each connected to a common ground terminal and wherein each of the collector terminals of the output transistors, each having a Output switching signal line is connected, which is acted upon by an output switching signal.
- the multi-channel switching device is used in a motor vehicle and serves, in particular, for data transmission in the context of a driver assistance system, for example, from a detection unit of the driver assistance system to a control unit thereof. It results from the inventive circuit a very elegant solution to the problem with simple means. In the minimum case, only a single input transistor is provided for each input signal line, and for each output signal line, if there are a plurality of output signal lines, multiple output transistors can be dispensed with and are preferably combined in a single output transistor.
- the output transistor can be omitted, just as in the case of only one input signal line the input transistor can be dispensed with, since in these cases no channel switching is required on the output side / input side.
- Switching from one channel to another is possible by simple control of the individual input transistors and / or output transistors by means of switching signals, for example, from a corresponding control device.
- the individual transistors can be switched through for signal transmission. Due to the small number of semiconductors also a low power consumption and high isolation of the individual channels against each other, that is, a low crosstalk between the channels realized.
- the circuit of the individual input and output transistors is effected for example by the setting of the respective base current. If no base current flows, the corresponding input and output transistors do not amplify and leave no signal. Only when setting the corresponding necessary base current through the control device of the respective channel / the respective signal line is enabled.
- An advantageous embodiment of the invention provides that the input switching signal lines are each connected to the base terminals of the and connected to the input of the respective input transistor with an input switching signal for generating a base current.
- each of the input transistors is assigned a respective switching transistor, each with a base terminal, a collector terminal and an emitter terminal and that the emitter terminals of the input transistors are each connected to a collector terminal of a switching transistor whose emitter terminal each with a common ground terminal is connected and that the base terminals of the switching transistors are each connected to an input switching signal line.
- This circuit in which two transistors are provided in the input region of the multi-channel switching device for each input channel / each input signal line, offers the same switching options as the basic version, whereby in each case via the adjustment of the emitter current of the respective input transistors by means of the switching transistors a shorter switching time is achieved compared to the basic version, in which the base current of the respective input transistors is controlled.
- the invention can also advantageously be configured in that the input transistors and / or the output transistors and / or the switching transistors are designed as field-effect transistors. This achieves an even lower power and possibly even faster switching of the channels.
- a further advantageous embodiment of the invention provides that the main signal conductor is connected to the emitter terminal of a control transistor whose collector terminal is connected to a supply voltage terminal and whose base terminal is connected to a control signal terminal for controlling the gain of the multi-channel switching device.
- control transistor With this circuit, a simple and low-noise setting of the gain of the switching device by means of a control signal voltage is possible by the control transistor. It is for this purpose no separate module provided, but the control transistor is integrated in a simple manner in the circuit.
- the control transistor is designed as a field effect transistor.
- the invention can also advantageously be configured by providing a power measuring device at the collector terminal of the control transistor.
- the gain of the circuit can be optimally adjusted to achieve exactly the required power or signal strength at the outputs, so that the minimum necessary gain can be adjusted and thus the power consumption and the noise performance of the entire circuit can be optimized.
- the power measuring device has a device for coupling out AC voltage at the collector lektoran gleich the control transistor.
- this device can have a capacitor which suppresses the DC voltage component and transmits the AC voltage component.
- the capacitor can be followed by a rectifier diode in series, behind the detection of the AC voltage amplitude in a simple form is possible.
- the side facing away from the capacitor side of the rectifier diode can also be connected via a resonant circuit to the ground potential to output fundamental oscillations that have nothing to do with the signals to be switched, for example, humming, and short-circuit to ground.
- a further advantageous embodiment of the invention provides that at least two input and at least two output signal lines are provided with responsive input and output transistors.
- the present circuit enables the achievement of advantages, especially with multiple input and output channels. In this case, the efficiency of the circuit with few switching elements can fully exploit their advantages.
- the invention can also be advantageously configured by providing a drive device for the output of input switching signals and / or output switching signals for activating the input signal lines and / or output signal lines.
- the desired input channels / input signal lines can be switched through to desired output channels / output signal lines by means of the multi-channel switching device in a simple manner and also as a function of external control signals. Due to the high efficiency and low-power control of the multi-channel switching device, the control device is not burdened with a high output current or a high output power. This also makes a high-frequency operation of the entire circuit possible.
- 1 schematically shows a multi-channel switching device with N input channels and M output channels
- FIG. 2 shows a multi-channel switching device as in FIG. 1 with differently designed input channels
- FIG. 3 shows a multi-channel switching device as in FIG. 1 with an additional amplifying device
- FIG. 4 shows a multi-channel switching device as in FIG. 2 with an additional amplifying device and a power measuring device
- FIG. Fig. 5 is a schematic representation of the invention Mehrkanalumschalteinnchtung with a drive device.
- Fig. 1 schematically shows a multi-channel switching device with N input channels and M output channels.
- Each input channel has an input signal line 1, 2, 3, at which in each case the input signal voltages V IN i to V IN N are present.
- Each of the input signal lines 1, 2, 3 is connected to the respective bases 59, 60, 61 of an input transistor 4, 5, 6.
- the input transistors are also designated T IN i to T IN N.
- the emitter terminals 7, 8, 9 of the input transistors 4, 5, 6 are each connected to a common ground potential.
- the collector terminals 10, 11, 12 of the input transistors are connected to a common main signal conductor 13.
- Each of the input transistors 4, 5, 6 is an input switching signal line 14, 15, 16 associated with the input switching signal lines can be acted upon with a switching signal, which is additionally indicated in Figure 1 by MUX IN i to MUX IN N.
- the respective input switching signal lines 14, 15, 16 are connected to the base terminals 59, 60, 61 of the input transistors 4, 5, 6, and as soon as a corresponding input switching signal is applied, the respective input channel / input transistor 4, 5, 6 is turned on and the one on it lying input signal V IN i to V IN N is turned on to the main signal conductor 13. In this way, the selection of the input signal among the N possible input signals by the input switching signals MUX IN takes place.
- each of the output signal lines 17, 18, 19 is connected to an output transistor 20, 21, 22, respectively.
- the base terminals 62, 63, 64 of the output transistors 20, 21, 22 are each connected via controllable current sources 23 to a common ground potential 33.
- the emitter terminals 24, 25, 26 are connected to the main signal conductor 13, respectively.
- the collector terminals 27, 28, 29 of the output transistors are respectively connected to output switching signal lines 30, 31, 32 to which output switching signals for turning on the respective output channels / output signal lines may be applied.
- the input and output signal lines are thus connected to each other in that in the corresponding input transistor and the desired output transistor, for example, a base current generated by a switching signal and thus the input and the output transistor are switched to passage. If no switching signal is present at the respective transistor, then it blocks.
- this circuit achieves a low system noise and sufficient amplification at sufficient switching frequencies.
- a multi-channel switching device wherein the input channels are arranged side by side on the left side and the output channels on the upper side of the circuit, as in FIG. 1.
- the input transistors are designated as 4, 5, and 6 in FIG.
- the input signal voltages V IN i to V IN N are applied to these.
- the respective collectors 10, 11, 12 of the input transistors are connected to the common main signal conductor 13.
- the emitter terminals 7, 8, 9 of the input transistors are each connected to a collector terminal 34, 35, 36 of a switching transistor 37, 38, 39, while the emitter terminals 40, 41, 42 of the Switching transistors are each connected to a common ground potential 43.
- the input switching signals MUX IN i to MUX IN N are applied to the base terminals 44, 45, 46 of the switching transistors 37, 38, 39.
- a suitable input switching signal is applied to one of the base terminals 44, 45, 46, a current flows through the corresponding switching transistor 37, 38, 39, which applies a corresponding emitter current through the emitter terminal 7, 8, 9 of the corresponding input transistor 4, 5, 6 of FIG Input channel entails, whereby this turns on and the input signal to the main signal conductor 13 passes.
- This two-stage transistor circuit per input channel allows a shorter switching time compared to the modulation of the input channels by means of the base current of the input transistors, as shown in FIG.
- Fig. 3 shows a circuit which is substantially constructed as the circuit shown in FIG. 2, wherein in addition to the main signal line 13 and the emitter terminals 24, 25, 26 of the output transistors 20, 21, 22, an emitter terminal 48 of a Control transistor 47 is connected.
- the collector terminal 49 of the control transistor 47 is connected to a supply voltage V G c, which also supplies the energy that requires a corresponding signal amplification by the switching device.
- the gain is controlled by the injection of the base current of the regulating transistor 47 via the base current source 50, which constitutes a control signal terminal for the regulating transistor.
- the base current source 50 is connected on its opposite side of the control transistor 47 to the common ground terminal 43.
- an optimized output level of the output channels is adjustable, whereby the Noise figure of the system can be optimized.
- the circuit according to the invention is also adaptable to circuitry requirements in the forwarding of the output signals.
- control transistor 47 is inserted organically in the circuit of the input and output transistors, resulting in low cost, low susceptibility and high efficiency of the overall circuit.
- the power measuring device 51 has a coupling-out line 52, which is connected to the collector terminal 49 and into which a capacitor 53 is inserted, which passes only the alternating-voltage components, that is to say the signal components.
- a semiconductor diode 54 Connected in series with the capacitor 53 is a semiconductor diode 54, which rectifies the signals and thus allows an amplitude measurement at the power measurement terminal 55, at which the power representing voltage V M AX can be tapped.
- the power measuring connection 55 is connected to the common ground potential 43 via a resonant circuit 56, consisting of a capacitor and a coil, which are connected in parallel with one another.
- a resonant circuit 56 consisting of a capacitor and a coil, which are connected in parallel with one another.
- the invention realized by the above-described circuit examples allows the construction of a simple inexpensive transistor circuit in which all the necessary elements can be integrated efficiently, so that the overall function at a low cost with a high efficiency and a low
- the multi-channel switching device 57 is shown as a whole in cooperation with a An horreinnchtung 58 schematically.
- the input signal lines 1, 2, 3 of the multi-channel switching device 57 are shown on the left side, while the output signal lines 17, 18, 19 are shown on the right side.
- the input switching signal lines 14, 15, 16 connect the Antechnischeinnchtung 58 with the multi-channel switching device 57.
- the output switching signal lines 30, 31, 32 are provided (it goes without saying that the number of in FIGS input channels and output channels may vary from 1 to N for the input channels and 1 to M for the output channels, respectively).
- the driver 58 may include, for example, a microprocessor or a microcontroller that generates appropriate input switching signals and output switching signals in accordance with signal distribution requirements to bring the multi-channel switching device into the desired coupling state.
- the Anberichttung 58 also have output lines, with the aid of the gain of the control transistor can be adjusted in the multi-channel switching device 57.
- the Anberichttung 58 may also have an input to which the power measuring terminal 55 of the power measuring device 51 can be connected.
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- Electronic Switches (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112014003996.9T DE112014003996A5 (de) | 2013-09-02 | 2014-07-29 | Elektronische Mehrkanalumschalteinrichtung |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201310217398 DE102013217398A1 (de) | 2013-09-02 | 2013-09-02 | Elektronische Mehrkanalumschalteinrichtung |
| DE102013217398.9 | 2013-09-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015028012A1 true WO2015028012A1 (de) | 2015-03-05 |
Family
ID=51798951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2014/200361 Ceased WO2015028012A1 (de) | 2013-09-02 | 2014-07-29 | Elektronische mehrkanalumschalteinrichtung |
Country Status (2)
| Country | Link |
|---|---|
| DE (2) | DE102013217398A1 (de) |
| WO (1) | WO2015028012A1 (de) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1197123A (fr) * | 1958-02-07 | 1959-11-27 | Ericsson Telefon Sfe Fse | Dispositif de commutation à transistors |
| NL7013553A (de) * | 1969-09-15 | 1971-03-17 | ||
| EP0613247A2 (de) * | 1993-01-08 | 1994-08-31 | DYNA LOGIC CORPORATION (a Californian Corporation) | Reprogrammierbare BICMOS-Logik |
| US6211721B1 (en) * | 1998-12-28 | 2001-04-03 | Applied Micro Circuits Corporation | Multiplexer with short propagation delay and low power consumption |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4572967A (en) * | 1982-09-07 | 1986-02-25 | Tektronix, Inc. | Bipolar analog switch |
| DD253890A1 (de) * | 1986-11-21 | 1988-02-03 | Leipzig Metallurgieelektronik | Schaltungsanordnung zum zeitmultiplexen von signalen |
-
2013
- 2013-09-02 DE DE201310217398 patent/DE102013217398A1/de not_active Withdrawn
-
2014
- 2014-07-29 DE DE112014003996.9T patent/DE112014003996A5/de active Pending
- 2014-07-29 WO PCT/DE2014/200361 patent/WO2015028012A1/de not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1197123A (fr) * | 1958-02-07 | 1959-11-27 | Ericsson Telefon Sfe Fse | Dispositif de commutation à transistors |
| NL7013553A (de) * | 1969-09-15 | 1971-03-17 | ||
| EP0613247A2 (de) * | 1993-01-08 | 1994-08-31 | DYNA LOGIC CORPORATION (a Californian Corporation) | Reprogrammierbare BICMOS-Logik |
| US6211721B1 (en) * | 1998-12-28 | 2001-04-03 | Applied Micro Circuits Corporation | Multiplexer with short propagation delay and low power consumption |
Also Published As
| Publication number | Publication date |
|---|---|
| DE112014003996A5 (de) | 2016-06-23 |
| DE102013217398A1 (de) | 2015-03-05 |
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