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The invention relates to a control device for operating a service vehicle, in particular fire fighting vehicle, or integrated in the emergency vehicle or externally operable auxiliary units, such as pump, compressor, hydraulic, power unit, etc., comprising at least one configuration unit, at least one electronic module with a computing device comprising a microcontroller and a memory device, analog and / or digital input-output interfaces with one or more connection contacts, and a bus system.
In order to fulfill the diverse and increasingly complex tasks of the emergency vehicles, in particular fire vehicles, also to the individual system components, especially pumps, Schaumzumischsysteme, launchers, spray guns, valves, etc., with which these tasks are ultimately met, increasingly demanding , This implies that an increasingly complex electrical and control technology is used. This makes it difficult to integrate new or changed system components into existing vehicle or engine electronics.
DE 196 00 644 C1 describes a circuit arrangement for functional modules that can be arranged in a motor vehicle, which are connected via at least two bus systems with a common gateway, which is realized via a central electrical module and a driver information module. The gateway is realized by a combination of computer units respectively arranged in the driver information module and the central electrical module and these are connected to each other via an interface for data exchange. The implementation of the gateway via the central unit no additional computer for data exchange of the individual bus systems is required and can be achieved by replacing the modules flexible adaptation to a certain level of equipment of a motor vehicle.
From EP 0 983 907 A2 a device for operating devices in a vehicle is known which has an electronic circuit arrangement with at least one microcontroller and an interface for a data bus. The microcontroller can be connected via the interface to a central computer arranged in the vehicle. The central computer controls, depending on the commands, which can be entered via multiple buttons of a housing by the user, various devices arranged in the vehicle, the actual connection or disconnection of the devices, the required load current leading, switching elements, which from the central computer be actuated takes place.
EP 0 525 697 A1 discloses an arrangement for identifying the identity of sites.
The arrangement comprises an interrogation unit as well as an arbitrary number of response units, which are arranged fixedly on houses, trees or poles for street signs. In both units control devices and information and data storage and facilities for the control of transmitting or receiving devices and displays are provided. In addition, input keyboards are provided in both units with which the digital data stored in a memory can be deleted or supplemented. The two units communicate with each other via a radio link and can be determined by an evaluation of a processor unit location.
A computer-implemented control system is known from EP 1 151 897 A1. The control system comprises a CAN bus connected to a machine control, to which data-generating and / or data-responsive components can be connected. The interfaces arranged for this purpose are equipped with microprocessors, which are incorporated either in the junction box or in the component. To distinguish the components is in the junction box and / or in the component itself, at least one electronic identification element, which may be formed by a characteristic resistor integrated. For example, when connecting or replacing a sensor, the user does not need to configure it and automatically identifies and initializes each connected component.
To identify and classify the components or bus users, the status of the system is continuously and cyclically monitored and analyzed.
From DE 100 22 422 A1 a method for accessing a device of a communication network in a motor vehicle by an external device or a gateway is known, wherein after an access request from an external device from the gateway information about the devices available in the communication network are transmitted as well a query of an access authorization takes place. If authorized, a software item is transferred to the external device
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to allow communication between the external device and the requested device.
DE 199 44 132 A1 discloses a system for process-controlled transmission of electrical signals and electrical energy within a military vehicle. Several consumers are connected via a CAN bus system with a central distribution unit, in which the bus system is integrated, and a central power supply unit. This avoids extended control lines. The individual loads are connected to the bus in a star shape via extended spur lines, which are routed in the same cable as the supply lines. The participants can be connected directly or via a common node element to the bus. The nodes are constructed identically and can therefore be exchanged for each other at any time.
The identical structure is achieved in that the contact assignment of the connector for the consumer is set so that all the necessary signals are available and not too many reserve lines remain open.
From DE 195 05 845 A1, a control unit for units on vehicles intended for communal or winter service is known. By using a CAN bus system, a degree of flexibility with regard to the interchangeability of the individual implements is achieved.
For this purpose, several connectors, or interfaces along the bus are provided. At these interfaces, various CAN bus suitable devices, such as a display unit or control unit, are connected.
From EP 0 952 704 A2 an electronic data bus-capable vehicle control device is known. Here, a controllable data protocol device is integrated in the vehicle control unit, which specifies the respective data protocol to be used from a predetermined set of different protocols variable. Under data protocol is understood the way in which temporal sequence data information is transferred. This communication is then used to communicate the individual components with each other.
A disadvantage of these systems known from the prior art is that only already known or standardized units and no units with other than the originally provided electrical properties, and then only with great effort or by exchanging complete modules can be integrated into an existing electronics.
The object of the present invention is therefore to provide a control device which can be flexibly adapted to changes in the individual system components, with regard to their electrical specifications.
This object is achieved according to the invention in that the configuration unit is communicatively connected to the computing device arranged in the electronic module and software functions are stored in the memory device and the computing device is designed at least for the random assignment of the functionality of the software functions to the connection contacts of the input modules of the electronic module and that Configuration unit is assigned at least one input unit and a display unit. The advantage here is that the electronic module used, which takes over the central control tasks for the respective additional unit, can be flexibly adapted to the functions and the connections of this unit.
The required data is input via an easy-to-use configuration unit by means of an input unit and a display unit, whereby a simple parameter input and simultaneous control of this input is possible. The stored and available in the memory of the electronic module functions or software routines can be assigned by input to the configuration unit the desired connection pins of the auxiliary unit. Thus, it is advantageously possible that no changes in the additional unit or replacement of an additional unit no new wiring and / or no change in the software stored in the electronic module or the electronic module itself, is necessary.
Furthermore, it is advantageous that due to the flexibility of the control device, even after the delivery of the vehicle, new units can be integrated into the existing control device by changing the configuration of the electronic modules.
By integrating the configuration unit in the electronic module, a new or reconfiguration can be done directly on the module itself, whereby independence, for example in case of errors or malfunctions of the bus system, is achieved.
It is also advantageous that the electronics module and the configuration unit with at least one
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Interface for local or remote transmission of signals or data via a local or global network is formed, as a data exchange and interaction of various electronic modules is easily possible or by example, configuration data that are stored on corresponding server computers of the manufacturer, can be replaced.
According to a development, it is possible for the configuration unit to be arranged externally and to be connected to the electronic module in line-connected or in wireless communication, whereby all the electronic modules integrated in the control device according to the invention can be configured by a central configuration unit, for example in the vehicle cabin. This configuration can also be carried out via a radio link, for example by a mobile service station.
It is also advantageous if the electronic module is clearly identified by an electronic identification number, as this can be a targeted response of the desired module, as well as a configuration of a central location.
By using a standard PC or even common palmtop or handheld computer to configure the electronic modules, the advantage of a simple to build graphical user interface and almost any flexibility in the functional scope is achieved.
According to a development, it is also possible for elements of the input unit to be formed from mechanical switches, in particular from DIP switches, and a new configuration of the electronic modules can be carried out by a service technician directly on site without the aid of special tools. In addition, such switches offer the advantage of maximum switching safety and are housed in a space-saving housing.
Furthermore, it is also possible that the input unit of the configuration unit is designed for inputting and storing parameters in the memory device of the electronic modules, whereby an input of, for example, analog values such as zero point, full point, spread, is easily possible.
A further advantageous embodiment of the invention provides that the parameters are stored in the memory device of the electronic module in an EEPROM or FLASH memory. As a result, unit-specific parameters can be safely stored in the electronics module even in the event of a power failure.
According to a further embodiment of the invention, it is provided that the existing bus system is designed for transmitting and / or reading the software functions into the memory device of the electronic module. This allows a simple software update of the functions in the electronics module.
According to the invention, it is also possible for the storage device to have parameters for an emergency program in the event of defective bus connections, and thus for a defect in the bus connection, an emergency program to be able to operate the respective unit in a fail-safe state.
But it is also possible that the microcontroller of the electronic module has data to restore a delivery configuration and it is thus easily possible, for example, in case of incorrect operation or incorrect input of parameters to restore the delivery configuration of the manufacturer.
It is also advantageous that the bus system is formed by a fieldbus system, in particular a CAN bus, and the topology of the bus system is linear, since field components can apply maintenance, diagnostics and control to themselves, support bi-directional communication and communication with other field components, as well as the wiring effort and thereby the costs can be significantly reduced.
Furthermore, it is possible that the control lines and the supply lines of the bus system are kept separate and thereby also consumers who require larger-sized supply lines due to their power consumption, can be connected.
According to a further embodiment of the invention, it is provided that the control device has software-based and / or hardware-side precautions to protect against unauthorized modification of the data, and thus malfunction or damage can be avoided.
Finally, it is within the scope of the invention also possible that the display unit is formed by LEDs, which offers the advantage of a cost-effective implementation of the configuration unit.
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The inventive control device will be explained in more detail with the following embodiments and with reference to the figures.
1 shows an emergency vehicle with additional units arranged on the roof and a trailer, with the control device according to the invention, in side view;
2 inventive control device with two different electronic modules with common bus system, as a block diagram;
Fig. 3 is a schematic representation of the configuration.
By way of introduction, it should be noted that in the differently described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be analogously applied to the same parts with the same reference numerals or component names. Also, the location selected in the description, such as. B. top, bottom, side, etc. related to the immediately described and illustrated figure and are to be transferred in a change in position mutatis mutandis to the new situation. Furthermore, individual features or combinations of features from the illustrated and described different embodiments may also represent separate, inventive or inventive solutions.
In Fig. 1, an inventive control device 1 in an integrated emergency vehicle 2, such as a fire engine, with arranged on the roof auxiliary units 3 and a trailer 4 is shown in side view. On or in the emergency vehicle 2, various auxiliary units 3, for example, pumps, compressor, hydraulic, power units and the like can be arranged. Subassemblies 3 are understood below to also include a wide variety of equipment, such as launchers, carrying syringes, lighting devices, foam-mixing systems, warning or signaling devices, fans, ladders, etc.
Furthermore, Fig. 1 shows a coupled with a coupling device for releasable connection to the emergency vehicle 2 trailer 4, which may also be equipped with various auxiliary units 3, in particular generators for power generation, extinguishing agent pumps or fans.
The individual additional units 3 are associated with electronic modules 5, which communicate with each other for electronic data exchange via a common bus system 6. According to the invention, the bus system 6 is formed by a fieldbus system, in particular a CAN (Controller Area Network) bus. In this case, each electronic module 5 has CAN input and output interfaces, as shown by communication interfaces 8 in FIG.
The electronic module 5 has the function of a CAN node element to which the various auxiliary units are connected. The topology of the bus system 6 is according to a preferred embodiment linear, so executed in bus structure. However, it is also conceivable according to the invention that the bus system 6 is designed, for example, in the shape of a ring or a star.
It is also possible to use redundant bus lines to increase the reliability. Due to the high currents and the associated interference fields, the data lines require or cause the individual additional units, preferably routed separately from the supply lines. Among other benefits, CAN technology offers the benefits of proven technology, easy cabling and secure transmission. However, the bus system 6 can also be formed by other systems, for example by a LON (Local Operating Network), Profibus (Process Field Bus), ASI (Actuator Sensor Interface), Interbus-S, FIP (Flux Information Processor, Factory Instrumentation Protocol) ,
These include, for example, the control of valves, pumps and relays, flow rate and flow control or measurement, detection of button and contact states or operating conditions and their logical connection and evaluation respectively.
Display, control of the entire data flow in compliance with bus protocols, control of communication over a radio link, processing of user input, visual and audible indication of operating conditions and the power supply or distribution of the individual units. For this purpose, corresponding software functions are stored in the electronic module 5. Furthermore, signals or states of interest via, for example, electrical, magnetic, optical or thermal sensors can be processed and evaluated by the electronic module 5. The sensors do not have to be integrated in the electronic module 5,
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but can thus be used for data exchange in line-connected or contactless communication.
Furthermore, the conversion of the input or output signals into analog or digital values or vice versa can be performed by the electronic module 5. It is also possible to filter or reprocess or adapt the individual signals to the specific properties and requirements of the additional unit 3.
The individual electronic modules 5 are not identical in their hardware as well as in their software structure, but are adapted to the respective auxiliary unit 3, or to the installation location of the auxiliary unit 3, or to the installation location in the auxiliary unit 3 , Consideration can be found, for example, the mechanical stress acting on the electronic module 5. Even high temperature loads or electromagnetic fields are taken into account by appropriate shielding. The adaptation takes place, for example, to the effect that for additional units 3 with higher power consumption, the electronic components, such as relays or power transistors, are dimensioned correspondingly higher, or in turn can be dimensioned smaller with lower requirements, which saves costs.
Likewise, faster switching times or processing times of the controlled additional units 3 can be taken into account by using correspondingly faster electronic components.
The integrated in the trailer 4 and an additional unit 3 associated electronic modules 5 are connected to the data exchange via correspondingly flexible and stable lines to the bus system 6 of the emergency vehicle 2. According to an embodiment variant of the invention, a wireless radio connection is also possible. The connection is used to integrate the trailer 4 in the entire control device 1. However, since the individual electronic modules 5 can operate independently and thus form the integrated units in the trailer 4 units and modules independent control device 1, it is according to the invention also possible, the trailer 4 and whose auxiliary units 3 operate independently of the emergency vehicle 2, or to use the functionality of the control device 1.
Furthermore, of course, it is also possible to couple additional units 3 directly to the bus system 6.
FIG. 2 shows the control device 1 according to the invention with two different electronic modules 5, with a common bus system 6 as a block diagram.
It should be noted that both electronic modules 5 need not be identical, but as already described in Fig. 1, adapted to the site and purpose. In Fig. 2, this is indicated by different widths input-output interfaces 7. Both electronic modules 5 are interconnected via the interfaces 8 and the common bus system 6. The required energy sources are not shown here.
About the input-output interfaces 7, the additional units 3 are driven, and signals from the auxiliary units 3 are received. These signals can be both analog and digital in nature. The pin assignment of the plug contacts of the input-output interface 7 may be different depending on the type of additional unit 3 connected thereto.
A computing device 9, comprising a memory device 10 and a microcontroller 11, controls the entire data processing, both the communication via the bus system 6, and also the assignment of the stored in the memory device 10 software functions to the individual hardware pins of the input-output interface 7. The memory device 10th can be formed by a flash memory, an EPROM, EEPROM and other read and write memories. As a result, the data is safely stored even in the event of a power failure.
According to the invention, the software functions stored in the memory device 10 do not have to be present identically in all electronic modules 5, or not all software functions must be stored in all modules. In addition to the basic application software, which are responsible for the basic functionality, such as the communication via the bus system 6 or EinEusgabeprotokolle or the like, the electronic modules 5, certain software functions groups are stored in the computing device 9. The application software is designed so far that it also allows operation of the electronic module 5, or the additional unit 3, in case of defective bus connection. So-called emergency programs operate in case of failure, the additional units 3 in a safe operating condition.
The software functions groups are at the
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adapted to the respective purpose of the electronic module 5. For example, certain software functions in an electronic module 5, which is intended for use in projectors, would not be stored in such a module for the control of a light tower.
The assignment of these software functions to the pins of the input-output interface 7 is performed by a configuration unit 12, which comprises at least one input unit 13 and a display unit 14. For example, the desired software functions or control functions of the auxiliary unit 3 can be assigned to the pins of the plug-in contact of the input interface 7 given on the hardware side. Likewise, for example, electrical measurement signals at the pins, the appropriate software functions and thus an evaluation can be supplied.
The current configuration of an electronic module 5 can be read out at any time by means of the configuration unit 12 from the memory device 10 and displayed by means of the display unit 14.
It is also possible to change the configuration at any time. The computing device 9 checks the current configuration for errors, for example, whether pins of the input-output interface 7 are double-assigned or analog signals are supplied to a digital evaluation or vice versa and the like. In the case of an error, the user is informed about, for example, the display unit 14.
For unambiguous identification of the nodes, or of the electronic modules 5, these are clearly identified by electronic identification numbers. It thus carries in the entire control device 1, each electronic module 5 its own unique number and can thus also be clearly addressed or addressed. The configuration unit 12 can be integrated directly on the electronic module 5. This offers the advantage that a new or reconfiguration can take place directly on the electronic module 5 itself, whereby an independence, for example in case of errors or malfunctions of the bus system 6, is achieved.
Parts of the input unit 13 can thereby by so-called. DIP (Dual Inline Package) - be formed switch. This allows a service technician to perform a configuration of the electronic module 5 without the aid of special tools. In conjunction with the display unit 14, which may be formed, for example, by a graphics-enabled display, a safe and simple configuration of the electronic module 5 is possible. The display unit 14 can also be realized by simple LEDs according to an embodiment variant, wherein in the case of, for example, 8 switches 8 LEDs already suffice for a catchy operability. By further input elements of the input unit 13, such as buttons, confirmations of the input, deleting the input, switching to the next function or the like can be performed.
According to one embodiment of the control device 1 according to the invention, it is also possible for the configuration unit 12 to be arranged externally from the electronics module 5, for example in the driver's cab or at other easily accessible locations in the emergency vehicle 2. It is quite possible that the configuration unit 12 on the electronic module 5 remains, the external configuration unit 12 is thus additionally arranged. With this external arrangement, a central configuration of any electronic modules 5 integrated in the control device 1 becomes easily possible. The configuration unit 12 is then integrated into the bus system 6 via the interface 8.
By selecting the desired module number, or the electronic module 5 assigned to the electronic identification number, by means of the input unit 13, the electronic module 5 is selected for the configuration process and then the desired software function, by entering a corresponding number, one or more of the desired pins of EinAusgangsschnittstellen 7 are assigned. For visual control or user guidance, the display unit 14 is used.
According to the invention, it is possible for the configuration unit 12 to be formed by a mobile electronic computing unit, for example a palmtop, handheld computer or a PC.
This provides the opportunity to use a powerful and easy-to-use interface. The communication with the emergency vehicle 2 can be done both line connected, as well as via a radio link. In this case, the configuration unit 12 is connected to the bus system 6 via the interface 8. In the case of communication via a radio link, the configuration unit 12 transmits the data by means of an antenna 15 to a transmitting / receiving unit 16, which is line-connected to the bus system 8 and the desired electronic module 5 responds.
It is also possible that the application software, ie the basic functionality and the
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specially adapted to the purpose of the electronic module 5 software functions can be transmitted via the existing bus system 6 by means of the configuration unit 12 in the individual electronic modules 5 and in their computing device 9. As a result, the software functions can be transmitted quickly and safely both during initial commissioning of an electronic module 5, as well as in software updates and revisions.
By means of the configuration unit 12, a parameter input for operating the auxiliary units 3 can also be made. Thus, it is possible to define values for, for example, maximum speed, maximum pressure, set of zero points, full points, spread, and so on. These parameters are stored in the memory device 10 in a manner safe from zero voltage. Reading out or updating these parameters is possible at any time via the bus system 6 by means of the configuration unit 12.
In addition, it is possible with the configuration unit 12 to set a delivery state in which all parameters receive a preset value from the manufacturer. Likewise, system parameters of the control device 1, for example the baud rate used for data communication, can be set.
For service purposes, it is possible by means of the configuration unit 12 to read, write or simulate the bus data required for operation of the control device 1. Thus, certain operating conditions can be tested or an additional unit 3 not yet installed or its electronic module 5 can already be checked and tested in advance.
It is also possible that by means of provisions that are realized by the software on the basis of corresponding password queries or on the hardware side by, for example, code keys or dongles or the like, only authorized bodies or persons can define and / or modify data of the electronic module 5. As a result, improper operation or use of the control device 1 is prevented.
In Fig. 3, the assignment of the various software functions to the hardware pins of an input-output interface 7 is shown schematically.
The memory device 10 integrated in the computing device 9 of the electronic module 5 contains, inter alia, the software functions, illustrated here by way of illustration as f1 to f7. The configuration unit 12, shown here integrated into the electronic module 5, is operated by means of the input unit 13 and the display unit 14. By configuring by means of the configuration unit 12, the microcontroller 11 assigns the desired software functions to the hardware pins of the input output interface 7. As a result, the electronic module 5 or its EinAusgangsschnittstelle 7 of the pin assignment of the auxiliary unit 3 can be adjusted individually. The explanation and further details can be found in the description.
For the sake of order, it should finally be pointed out that, for a better understanding of the control device, these or their components have been shown partly unassembled and / or enlarged and / or reduced in size.
The task underlying the independent inventive solutions can be taken from the description.
Above all, the individual in Figs. 1; 2; 3 embodiments form the subject of independent solutions according to the invention. The relevant tasks and solutions according to the invention can be found in the detailed descriptions of these figures.
1 control device
2 emergency vehicle
3 additional unit
5 electronic module
6 bus system
7 input output interface
9 computing device
10 storage device
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12 configuration unit
13 input unit
14 display unit
16 transceiver unit
Control device (1) for operating an emergency vehicle (2), in particular fire engine vehicle, or of auxiliary units (3) integrated in the emergency vehicle (2) or externally operable, such as pump, compressor, hydraulic, power unit, etc. at least one configuration unit (12), at least one electronic module (5) with a computing device (9), comprising a microcontroller (11) and a memory device (10), analog and / or digital input output interfaces (7) with one or more
Connection contacts, as well as a bus system (6), characterized in that the confi guri unit (12) with the electronic module (5) arranged computing device (9) is communicatively connected and stored in the memory device (10) software functions and the computing device ( 9)
at least for the random assignment of the functionality of the software functions to the connection contacts of the input / output interfaces (7) of the electronic module (5), and that the configuration unit (12) has at least one input unit (13) and one display unit (14) assigned.