CN207851801U - Support the high speed cd-rom recorder of multiple communication modes - Google Patents

Abstract

The utility model is related to a kind of high speed cd-rom recorders for supporting multiple communication modes,Including pcb board,The pcb board is equipped with microprocessor,Internal memory chip,Voltage transformation module,Power interface,SPI interface,CAN interface,External signal triggers button,The microprocessor has 2 groups and 2 groups or more of SPI signal line,The internal memory chip is connected by one group of SPI signal line with microprocessor,The SPI interface is connected by remaining SPI signal line with microprocessor,The output end of the voltage transformation module is connected with the power end and ground terminal of microprocessor and internal memory chip,The CAN interface is connected with the ports CAN H/L of microprocessor,The external signal triggering button is connected with the I/O of microprocessor mouths,The input terminal of the power interface connection voltage transformation module.The high speed cd-rom recorder is light, is easy to carry about with one and operates, the upgraded in offline for being suitable for the ECU such as automobile combination meter and the online upgrading after entrucking.

Description

Support the high speed cd-rom recorder of multiple communication modes

Technical field

The utility model belongs to technical field of automotive electronics more particularly to a kind of periphery in electrical automotive circuits is deposited Memory device and main control chip burning concretely relate to a kind of in vehicle ECU (electronic control unit) The high speed cd-rom recorder of master controller and Peripheral storage burning chip, it supports the burning mode of multiple kinds.

Background technology

With the continuous development of auto industry, the function of automobile combination meter is more and more abundant, later stage upgrading and detection Number also tends to increase, currently, in the control mainboard of automobile combination meter, the burning mode of main control chip and peripheral memory devices Mainly there are following 3 kinds：

（1）Offline burning：Storage chip carries out burning before SMT patches, but later stage test and upgrading will be difficult in this way To realize.

（2）Half offline burning：Storage chip after SMT patches, by SPI (Serial Peripheral Interface, Serial Peripheral Interface (SPI)) data line and power cord are drawn to carry out burning, but this later stage is also difficult to realize without dismounting upgrading, and And it accesses power supply and is easy that the MCU (Micro controller unit) of automobile combination meter control mainboard is made to generate self-locking and open Move abnormal phenomenon.

（3）CAN bus burning：Burning, but the transmission rate of CAN bus ratio are carried out to storage chip by CAN bus It is relatively low, cause the time of burning long.

Therefore, burning mode used by cd-rom recorder in the prior art cannot be satisfied automobile combination meter control mainboard The programming and upgrading of upper main control chip and peripheral memory devices, there is an urgent need for a kind of novel cd-rom recorders to solve above-mentioned three kinds The problems of burning mode.

Utility model content

The purpose of this utility model is to provide after a kind of upgraded in offline suitable for automobile combination meter and entrucking Line upgrades and supports the high speed cd-rom recorder of multiple communication modes, and the programming rate of the cd-rom recorder is high and can support various communication interfaces Burning, be completely suitable for the offline burning and online burning of automobile combination meter primary control program and resource method.

To achieve the goals above, the technical solution adopted in the utility model is a kind of height for supporting multiple communication modes Fast cd-rom recorder, including pcb board (Printed Circuit Board, printed circuit board), the pcb board be equipped with microprocessor, Internal memory chip, voltage transformation module, power interface, SPI interface, CAN interface, external signal trigger button, micro- place Reason utensil has 2 groups and 2 groups or more of SPI signal line, the internal memory chip to pass through one group of SPI signal line and microprocessor phase Even, the SPI interface is connected by remaining SPI signal line with microprocessor, the output end of the voltage transformation module with it is micro- Processor and the power end of internal memory chip are connected with ground terminal, the ports the CAN H/L phase of the CAN interface and microprocessor Even, the external signal triggering button is connected with the I/O of microprocessor mouths, and the power interface connects the defeated of voltage transformation module Enter end.

As a kind of improvement of the utility model, the pcb board is equipped with LED light, the LED light and Wei Chu The I/O mouths for managing device are connected；The external signal triggering button includes starting button（start button）With stop key（stop button）.

As a kind of improvement of the utility model, one group of SPI signal line of the microprocessor includes the ports SCLK, MOSI Port, the ports MISO, the ports CS and the ports GND.

As a kind of improvement of the utility model, the microprocessor uses the microcontroller of model RH850D1L, institute State the model MT25TL01G of internal memory chip.

As a kind of improvement of the utility model, 5V power supplys are converted into 3.3V, voltage conversion by the voltage transformation module Module is designed using the main control chip of model TLV1117.

Compared with the existing technology, the high speed cd-rom recorder overall structure for the support multiple communication modes that the utility model is proposed Ingenious in design, dismounting assembling convenient maintenance and replacement, cost is relatively low, and the structure of entire cd-rom recorder is simple, light, is easy to carry about with one and grasps Make, since pcb board is equipped with 2 groups and 2 groups or more of SPI signal line, is easy to expand more SPI interfaces to realize height Fast burning, in addition, this high speed cd-rom recorder is supported in the automobile combination meter control mainboard with two kinds of communication modes of SPI, CAN The programming and upgrading of main control chip and peripheral memory devices in order to the upgrading and repair of automobile combination meter, while also improving The rate of product test and research and development.

Description of the drawings

Fig. 1 is the circuit structure block diagram of the preferred embodiment in the utility model.

Fig. 2 is the circuit diagram of the voltage transformation module of the preferred embodiment in the utility model.

Fig. 3 is that the cd-rom recorder of the preferred embodiment in the utility model and the connection relation of target device and host computer are illustrated Figure.

Fig. 4 is the circuit connection diagram that the cd-rom recorder itself of the preferred embodiment in the utility model upgrades.

Specific implementation mode

In order to deepen, to the understanding and cognition of the utility model, to be further described below in conjunction with the accompanying drawings to the utility model And introduction.

As shown in Figure 1, giving a kind of high speed cd-rom recorder for supporting multiple communication modes, including pcb board, the pcb board Be equipped with microprocessor RH850D1L, internal memory chip MT25TL01G, voltage transformation module, power interface, SPI interface, CAN interface, external signal trigger button, and the microprocessor has 2 groups of SPI signal lines, the internal memory chip MT25TL01G is connected by one group of SPI signal line with microprocessor, and the SPI interface passes through another group of SPI signal line and Wei Chu Device is managed to be connected.Wherein, be arranged one between microprocessor and internal memory chip group of SPI signal line include the ports SCLK, The ports MOSI, the ports MISO, the ports CS, and one group of SPI signal line being arranged between microprocessor and SPI interface includes SCLK Port, the ports MOSI, the ports MISO, the ports CS and the ports GND.The output end of the voltage transformation module and microprocessor and The power end of internal memory chip is connected with ground terminal, and the CAN interface is connected with the ports CAN H/L of microprocessor, described outer Portion's signal triggering button is connected with the I/O of microprocessor mouths, the input terminal of the power interface connection voltage transformation module.This height After fast cd-rom recorder is suitable for upgraded in offline and the entrucking of the ECU (electronic control unit) such as automobile combination meter Online upgrading.

Wherein, as shown in Fig. 2, the voltage transformation module is designed using the main control chip of model TLV1117, 5V power supplys can be converted into 3.3V, to provide power supply for microprocessor RH850D1L and internal memory chip MT25TL01G. Diode is provided between the output end and input terminal of the voltage transformation module, the anode of diode connects output end, Cathode connects input terminal.

The pcb board be equipped with LED light, the LED light be used as cd-rom recorder work light, by its with it is micro- The I/O mouths of processor are connected, and GPIO controls are carried out to it.The external signal triggering button includes that beginning button and stopping are pressed Key.High speed cd-rom recorder by triggering the operation of button to external signal in use, controlled to automobile combination meter control mainboard MCU programs upgrading or chip flash flow.

Itself software upgrading of the pcb board of the cd-rom recorder passes through host computer（Such as PC machine）It realizes, host computer is turned by USB The SPI interface of SPI module connecting PCB boards.The circuit connecting mode of host computer and cd-rom recorder is referring to Fig. 4.Upgrade by cd-rom recorder It, can be using the cd-rom recorder come to large batch of target device after completion（Automobile combination meter）Carry out software and resource liter Grade.

As shown in figure 3, the high speed cd-rom recorder is when in use, with target device（Automobile combination meter）, 5V power supplys, host computer Turn SPI modules with USB to be connected, specifically：Host computer turns SPI modules with USB by USB interface and is connected, and USB is turned SPI modules The SPI signal line of upper SPI interface is connected with the SPI interface of high speed cd-rom recorder.Use SPI signal line by target device simultaneously SPI interface is connected with the SPI interface of high speed cd-rom recorder, or by CAN bus by the CAN interface of target device and high speed burning The CAN interface of device is connected.The power interface of high speed cd-rom recorder connects 5V power supplys, is converted into 5V power supplys by voltage transformation module 3.3V powers to microprocessor and internal memory chip.

Then, the program upgraded will be needed to turn SPI modules by USB by host computer to change into SPI protocol data, be burnt to In the internal memory chip of high speed cd-rom recorder, specifically：Target program and control instruction are sent to USB and turn SPI moulds by host computer On block, target program and instruction are converted into SPI protocol and be sent on the SPI interface of high speed cd-rom recorder by the module, it is upper Machine notice microprocessor receives target program, and stores onto internal memory chip.Then high speed cd-rom recorder can be voluntarily Go the Flash boot-Loader software systems loaded by microprocessor internal that program is burnt to other mesh to be upgraded again In marking device.

When target device is in the i.e. offline non-entrucking of single group state, pass through the SPI interface of target device and cd-rom recorder SPI interface is connected, and external signal triggering button triggering makes microprocessor execute burning operation, by the target journey of internal memory chip Sequence is read out, and is sent in the microprocessor of target device by SPI interface, and same target device passes through target program SPI interface is burnt in storage chip.Since the transmission rate of SPI interface can reach 8Mps, system burning is usually logical SPI protocol is crossed, transmission rate is fast, and the time that burning executes is short.

And when target device is in Full Vehicle System, that is, online entrucking when, OBD connecting lines are turned by target device by DB9 CAN interface be connected with the CAN interface of cd-rom recorder, then external signal triggering button triggering cd-rom recorder microprocessor to target The microprocessor of device handler carries out burning, and sending instruction makes the microprocessor of target device that target program is passed through CAN Agreement is sent on storage chip.

It should be noted that above-described embodiment, is not used for limiting the scope of protection of the utility model, in above-mentioned technical side Made equivalents or replacement each fall within the range that the utility model claims are protected on the basis of case.It is wanted in right In asking, word "comprising" does not exclude the presence of element not listed in the claims.

Technological means disclosed in the utility model is not limited only to the technological means disclosed in the above embodiment, also Include by the above technical characteristic arbitrarily the formed technical solution of combination.It should be pointed out that for the ordinary skill of the art For personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these are improved and profit Decorations are also considered as the scope of protection of the utility model.

Claims (5)

1. a kind of high speed cd-rom recorder for supporting multiple communication modes, it is characterised in that：Including pcb board, the pcb board is equipped with micro- Processor, internal memory chip, voltage transformation module, power interface, SPI interface, CAN interface, external signal trigger button, institute Stating microprocessor, there is 2 groups and 2 groups or more of SPI signal line, the internal memory chip to pass through one group of SPI signal line and Wei Chu It manages device to be connected, the SPI interface is connected by remaining SPI signal line with microprocessor, the output of the voltage transformation module End is connected with the power end and ground terminal of microprocessor and internal memory chip, the CAN H/L of the CAN interface and microprocessor Port is connected, and the external signal triggering button is connected with the I/O of microprocessor mouths, and the power interface connects voltage modulus of conversion The input terminal of block.

2. supporting the high speed cd-rom recorder of multiple communication modes as described in claim 1, which is characterized in that set on the pcb board There are LED light, the LED light to be connected with the I/O of microprocessor mouths；External signal triggering button include start by It key and stops key.

3. supporting the high speed cd-rom recorder of multiple communication modes as claimed in claim 2, which is characterized in that the microprocessor One group of SPI signal line includes the ports SCLK, the ports MOSI, the ports MISO, the ports CS and the ports ND.

4. supporting the high speed cd-rom recorder of multiple communication modes as claimed in claim 3, which is characterized in that the microprocessor is adopted With the microcontroller of model RH850D1L, the model MT25TL01G of the internal memory chip.

5. supporting the high speed cd-rom recorder of multiple communication modes as claimed in claim 4, which is characterized in that the voltage modulus of conversion 5V power supplys are converted into 3.3V by block, and voltage transformation module is designed using the main control chip of model TLV1117.