DE2235549A1 - ELECTRONIC DEVICE FOR CONTROLLING ELECTRICAL AND / OR ELECTRONIC EQUIPMENT INSTALLED IN MOTOR VEHICLES, USING DIFFERENT FREQUENCIES, EACH PART OF A BASIC FREQUENCY - Google Patents

Description

PATENT LAWYERS

DiPL-ΐΝΘ. R. SPLANEMANN dipl.-chem, dr. B. REITZNER - dipl.-ins. J. JUDGE

MUNICH HAMBURG

2OOO HAMBURG SS _y ά, βΠ 18β.7 1972

Neuer Wall 10 Telephone (0411) 340045 Telegrams: Inventius Hamburg

Our files:

Your mark: IRMAN ELECTRONICS

O 9-oL © ο ο ^

Turia / Italiea

Patent application

Electronic device for controlling electrical and / or electronic _? devices installed in motor vehicles, '' using different frequencies, each of which is a partial number of a basic frequency,

In many applications, electrical and / or electronic devices with different characteristics it is necessary to have power sources of different frequencies in order to meet "special operating rules, some facilities or practical advantages to ■ consider.

Especially with electrical systems, which are the individual electrical devices built into motor vehicles it is absolutely necessary to use electrical sources of different frequencies to

309816/0233 Ο ^ ιθιναι inspected

add, Z ₀ as in the following situations:

- Generation of electrical energy with ultrasonic frequencies for various uses,

- Generation of electrical energy at a suitable frequency to feed acoustic signal generators,

- Generation of electrical energy at suitable frequencies to drive electrical pumps, such as the fuel and other pumps,

- Generation of electrical energy at a suitable frequency for controlling solenoids and / or Relay,

- Generation of electrical energy at a suitable frequency to control the electrical clock and other instruments,

- Generation of electrical energy at a suitable frequency for the control of the direction lamps and indicator lights in general,

- Generation of electrical energy at suitable frequencies for the intermittent actuation of the windshield wiper,

- Generation of electrical energy of suitable frequencies for the time control of devices in general.

The circuit with matching, mutually different frequencies of the devices listed above is because of the the advantages achieved thereby.

As is known, an electrical direct current supplies the individual devices in motor vehicles which some who need an intermittent power supply, by adding electromechanical or

3098 16/0233

electronic intermittent "or vibration exciter Organs presuppose a complicated construction · It is clear that the "previous system nan order requires the application of a large number of organs to generate different frequencies, which must result in a considerable technical complexity of the system

In order to achieve a significant technical improvement in vehicle equipment over an obvious one Simplification, the invention has an electronic device for the subject, which is characterized is that it generates a number of mutually distinct frequencies, each a partial number of a Represent the main frequency generated by an oscillator circuit belonging to the same device.

Another feature of the device according to the invention lies in the fact that the individual frequencies generated can be used simultaneously.

Another feature of the device according to the invention is, after all, that they are able to use appropriate logic modules is to mix two or more generated frequencies in order to convert them into electrical, time-graded pulses to transform

Further features of the device according to the invention emerge more clearly from the following description, which refers to the enclosed circuit diagrams, in which

309 816/0233

Fig. 1 is a block diagram of the inventive Device with connected possible consumers!

2 shows a block diagram of the end section of the device according to FIGS. 1 and

Fig. 3 is a diagram for describing the

Function of part of the device

represents.

In Fig. 1, Io is an oscillator, e.g. a crystal oscillator, which generates the main frequency, and with 11 frequency divider stages - best for two-parters - the are preferably cascaded to generate partial frequencies of the main frequency, and the number and the Characteristic values according to the requirements for the operation of the various devices to be controlled Frequencies are adapted, designated · With 12 - 2o the control levels of the consumers are designated, which to belong to the controlled system. In particular, 12 control levels are designated for any ultrasonic consumers, such as ultrasonic windshield wipers, ultrasonic safety devices, additional machines for neon lights etc. At 13 is the control level for horns, with

14 are the control stages for electric pumps in general and step and / or pulse motors, with

15 is the control level for solenoids and relays for various functions, with 16 the control level for an electric clock and similar devices, with 17 the control stage of the direction indicators as well as the various Flashing lights for other vehicle equipment, with 18 is the control level for the intermittent

309816/0233

Betriet) of the windshield wiper and 19 is a timer stage designated for additional any facilities with intermittent operation are available

In Fig. 2, which describes the sohnitt designated with A in Fig. 1 in more detail, the electrodes 2oa, 2ob are connected to the power source of the vehicle provided, designated with 27 hazard warning lights »The changeover switch of the direction indicator lights is schematically indicated by 25, while 24 indicates an organ that controls the hazard warning lights 27 and is temporarily interrupted.

With 28,29,3o there are tax levels for the intermittent Operation of the electric motor 32 for driving the windshield wiper is indicated · With 31 is the electric Changeover switch for the operation of the windshield wiper indicated} 33 indicates a multi-position changeover switch - with 3 positions in the illustrated case - which enables the selection of the clock frequency for the windshield wiper. A pair of isolating diodes is designated 3Ö.

The mode of operation of the device is provided that all divider stages 11 are set to zero when power is supplied to the device according to FIG the following:

The oscillator Io is heated and its according to the own time constants generated vibrations become the first frequency divider stage 11 as well as the eventual

309816/0233

existing control stages 12 for generating ultra · » The first divider stage 11, whose circuit is formed by a flip-flop, has an oscillation at its output, the frequency of which in the present case is equal to half of the input oscillation. The same is happening for all subsequent dividers, so that after each divider 11 an electrical current is available and over suitable plug can be used, its frequency

f - _J! __ (a) K ⁿ

f s frequency according to the divisor in question, w s frequency generated by the oscillator Io,

K a division factor of levels 11,

η «number of factors considered.

It is evident that the relationship expressed by equation (a) is only valid if K remains the same for all of the n-divider stages under consideration is.

With 13.14.15 »16.17» 18.19, as mentioned above, denotes different control stages, which are connected in a suitable manner to plug connections that each supply the current of the appropriate frequency for the supply of individual consumers.

For better clarity for the functional features of the device according to the invention, the following description relates to the power supply of two main devices of the motor vehicles, namely: Device for

309816/0233

the intermittent activation of the flashing light system and timer for the windshield wiper system.

In particular, the input 21b of the logical structure · » Stone 21 - as in! ig 2 -section A of Fig. 1-shown - the divider lla naohgesehaltet and the The output of the logic module 21 controls a power amplifier 22 which actuated the heater 23 The input 21a of the same logic module 21 is connected downstream of the switch 25a, which is from the relay 23 is actuated so that when the switches 24 and / or 25 are closed., The potential of the input 21a of the logic module 21 drops to a level that releases the input 21b of the same, and through the same enables the control of the power stage 22, which actuates the relay 23 and thereby the intermittent The supply of the lamps 27 and / or 26 with the frequency present at the output of the divider 11a causes the release of the input 21b of the logic module 21, which was triggered by the drop in potential - despite the subsequent increase in potential at input 21a as a result of the closure of switch 23a - in able to drop in potential at input 21b. to pause, whereupon the latter input is blocked again is until the input 21a releases the same again and thereby the subsequent excitation of the stage 22 allows, which is triggered by the divider lla.

From what has been said so far, it follows that the closing of the switch 24 and / or 25 suspending the lights or groups of lights 27 and / or 26 at a frequency feeds which is equal to the output frequency of the divider lla. According to the currently in the area

309816/0233

of the applicable motor vehicle regulations Nominal value of 85 pulses per minute have · Similar Determinations require a Henn value as the frequency of one of the windshield wiper speeds from 4o-45 misses per minute. The divider 11b, the the divider 11a is tracked, provides a frequency of 42.5 pulses per minute, i.e. within the value limits established by the regulations, which are suitable for feeding a drive motor 32 of the windshield wiper system.

In addition, it is advantageous if further frequency values can be available that are even smaller than 4o-45 Pulses per minute are what you can get by dividing the above value of 42.5 deflections in two per minute can be achieved in a technically simple manner, with the following values being obtained:

42.5 / 2 = 21.25 and 21.25 / 2 = lo.625,

i.e. around 21 or Io deflections.

If it were necessary to have other frequency values than those assumed in all the examples above, it is of course sufficient to different, suitable division coefficients for each level to choose. For example, dividing the frequency 85 pulses per minute by 3 results in a frequency value of approx. 28 pulses per minute, which is one of the the time-adjustable function of the windshield wiper corresponds to the usual speeds.

The implementation of an electronic circuit capable of delivering the aforementioned frequency values, is shown in Fig. 2, in the three dividers, and

3098 16/0233

Although preferably two-parter, according to which divider 11a are cascaded, the output of these three two-parters is advantageously mixed by using a matching mixer 28, which is able to control the power stage 29, which in turn controls a relay 3o that controls the electric motor 32 of the windshield wiper has to be fed in a suitable manner _o

Leave a suitable switch 33 Select several operating frequencies for the relay 3o, namely three frequencies in the illustrated IPaIl.

In practice, the actuation of the time-graded power supply to the windshield wiper system is achieved Closing the switch 31 »via which the frequency divider stages 11b, lic, Hd and the mixer 28 and the power stage 29 are fed · The Output of divider stage 11b - 4-2.5 pulses per minute is fed directly to input 4o of mixer stage 28, at the input of which the signal fed to this input is present or not, depending on the state of its second input 89

With reference to the example given above and on the diagram of Figo 3, the excites Stage 28 the power stage 29 only if it in turn via its two inputs 39 »4o at the same time is energized, as well as when input 4o is energized and input 39 is "not connected".

In this way, the toggle switch 33 is "depending on what it is." mandatory setting will be able to input

309816/0233

- Io -

Via the isolation diodes 38 either with none of the outputs 36, 37 of the separation stages lic, lld or to connect with the first or with both

Depending on the setting of the switch 33, one of the following states is obtained:

- Changeover 33a- 33d (input 39 "not connected", i.e. changeover switch open): at the output of mixer 28 and thus at the output of the power stage 29 vibrations are present which have the same course like those present at the output 35 of the divider 11b Oscillations · This perlode is represented by diagram B in FIG.

- Switchover 33b- 33d: at the output of mixer 28 electrical pulses are present, the duration of which is half the duration of the period of the output 35 of the Divider 11b is present vibrations, but the pulses separated by a time interval which is equal to the period of the oscillations present at the output 36 of the divider lic, see Panel C of FIG. 3.

- Switchover 33c- 33d: at the output of mixer 28 there are electrical impulses of the same duration as in the previous case, but they are apart separated by a time interval which is the duration of the period of the present at the output 37 of the divider lld Vibrations is the same, see diagram D of Fig

The diagrams E, F, G represent the outputs 35, 36 and 37 of the corresponding dividers lib, lic, Il

309816/0233

- li -

existing electrical vibrations _e

From the above description, the advantages listed below when using the invention Device heryors

- Stability and accuracy of the signals emitted »

- Simplification of a large number of devices that were previously used to achieve the corresponding large number were normally used by services,

- Reduction of the overall space requirement thanks to the Possibility of using integrated circuits,

- Availability of a large selection of electrical signals of different frequencies from each other, the can be used for other needs if necessary.

The device according to the invention is not limited to the example given and described, but it includes every change that can be carried out by specialists ο

- patent claims -

3098 16/0233

Claims (1)

- 12 patent claims ¹ I «J Electronic device for controlling electrical and / or electronic! Equipment installed in motor vehicles using different frequencies, each of which is a partial number of a basic frequency, characterized in that the device has an electronic oscillator with a frequency that can be determined in advance, which controls a number n frequency divider stages for a factor K, the stages of which are connected in series, and several electronic control stages with different frequencies for the separate or simultaneous supply of devices that work with ultrasonic or electrical oscillations of corresponding frequencies, of acoustic single-tone or multi-tone signals, of electric pumps for different purposes, of electric step and / or pulse motors , of various solenoids or relays, of electrical clocks and other similar instruments, of direction indicator lights and intermittent signal transmitters, of windshield wiper systems and of time switches for .different purposes for the production g has a uniform, stable device with which a plurality of electrical current frequencies for electrical vehicle equipment can be fed. 2. Device according to claim 1, characterized in that the intermittent supply the windshield wiper system specific control stage has a power level that is determined by a logical Mixer stage, which is capable of 3098 16/0233 to give electrical impulses of constant duration, which are separated in time by intervals of a duration that is a multiple of the flashing time of the direction indicator lights is o 3ο device according to claim 1, characterized in that after a logic mixer stage, certain electrical, repetitive pulses are available which can be graded from one another over time, namely in a predetermined manner depending on the positions adjustable on an electrical switch, variable periods, which after multiples Numbers of a preselected basic period vary, this basic period can be selected from the various periods that are available down the _frequency divider of the same device _{or the like} 4o device according to claim 1, characterized in that that the control stage for the direction lights is replaced by an electronic oscillator stage a frequency divider stage is connected upstream * 5. Device according to claim 1 or 4 »characterized in that the control stage of the direction lights is provided with an output such that at the same frequency as the flashing frequency the direction lights can be controlled for various purposes, namely at the same time or separately from the supply of the direction lights ο 6. Device according to claim 1 or 4 »characterized in that down the stage that the 3098 16/0233 Frequency for the intermittent supply of the direction lights, a two-part stage is directly connected, which is the shorter Period for the intermittent supply of the windshield wiper system supplies. 7. Device according to claim 1, characterized in that the device is a primary chain of frequency dividers and one or more frequency dividers connected in cascade with one another, the input of the first divider of this second chain with any matching output of the primary Chain is connected. Device according to one of the preceding claims, characterized in that all electronic Stages making up the device or a part thereof as an electronic integrating circuit are executed. 309816/0233