CN202929707U - Electric vehicle data logger - Google Patents
Electric vehicle data logger Download PDFInfo
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- CN202929707U CN202929707U CN 201220688557 CN201220688557U CN202929707U CN 202929707 U CN202929707 U CN 202929707U CN 201220688557 CN201220688557 CN 201220688557 CN 201220688557 U CN201220688557 U CN 201220688557U CN 202929707 U CN202929707 U CN 202929707U
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- control singlechip
- storage unit
- master control
- main control
- singlechip
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Abstract
The utility model discloses an electric vehicle data logger which comprises a master control singlechip, a storage unit, a watchdog circuit unit and a state storage unit, wherein the master control singlechip is used for recording a working state parameter of a battery in real time, the storage unit is connected to the master control singlechip, the watchdog circuit unit is connected with the master control singlechip, and the state storage unit is used for recording operating states and parameters of the master control singlechip in real time. The watchdog circuit unit comprises a timer circuit and a first power supply unit, wherein the timer circuit is equipped with a signal input end and a signal output end which are connected with the master control singlechip, and the signal output end is connected with a reset terminal (RST) of the singlechip. The state storage unit comprises an EEPROM (electrically erasable programmable read-only memory) chip and a second power supply unit. The electric vehicle data logger can be reset in the case of system halted or program fleet, and the like of the data logger, and the state storage unit is used for backing-up the working states before the work of the data logger is abnormal, so that the data loss and the influence of the continuity of data records are prevented, and the stability and the accuracy of working of the singlechip are improved.
Description
Technical field
The utility model relates to a kind of electric automobile datalogger.
Background technology
Along with electric automobile constantly develops, be battery management system as the BMS(of one of electric automobile core component) also obtained significant progress, its actual quantity that is employed sharply increases, and this also causes the upgrade maintenance work of BMS constantly to increase.The datalogger that uses of electric automobile wherein, it is also one of maintenance service, datalogger is recorded the battery informations such as the battery cell voltage of battery management system Real Time Monitoring, temperature, electric current, and be stored in the SD card, for the state variation of analyzing under battery operating provides the data foundation.And the single-chip microcomputer that datalogger uses program fleet may occur at work or enter the state of endless loop, in the bad working environments such as automobile vibration, temperature are lower, outage also may occur.These situations can cause the record of data there is no continuity, and single-chip data storage is unstable, cause the phenomenons such as the data of record are imperfect.
The utility model content
The problem that might occur in real work in order to solve above-mentioned datalogger, the utility model provide a kind of can steady operation and keep the design proposal of the electric automobile datalogger of data recording continuation.
A kind of electric automobile datalogger, comprise the main control singlechip for the battery operated state parameter of real time record, and be connected to storage unit on main control singlechip, it is characterized in that, also be provided with the watchdog circuit unit that is connected with main control singlechip and the state storage unit that is used for the current main control singlechip running status of real time record and parameter.
Described watchdog circuit unit comprises timer circuit and is the first power supply unit of its power supply.
Described timer circuit is provided with signal input part and the signal output part that is connected with main control singlechip, and signal output part is connected with the reset terminal RST of single-chip microcomputer.
Described state storage unit comprises eeprom chip and is the second source unit of its power supply.
In sum, the situations such as deadlock or program fleet can appear at datalogger in the utility model, the reseting data registering instrument, and the duty before using state storage unit to data registering instrument operation irregularity backs up, to prevent loss of data, affect the continuity of data recording, improve stability and the accuracy of single-chip microcomputer work.
Description of drawings
Fig. 1 is the one-piece construction schematic diagram of electric automobile datalogger described in the utility model.
Embodiment
In order to allow those skilled in the art understand better the technical solution of the utility model, below in conjunction with accompanying drawing, the utility model is further elaborated.
As shown in Figure 1, the utility model has disclosed a kind of electric automobile datalogger, comprise the main control singlechip for the battery operated state parameter of real time record, and be connected to storage unit on main control singlechip, and be provided with the watchdog circuit unit that is connected with main control singlechip and the state storage unit that is used for the current main control singlechip running status of real time record and parameter.The watchdog circuit unit comprises timer circuit and is the first power supply unit of its power supply.Timer circuit is provided with signal input part and the signal output part that is connected with main control singlechip, and signal output part is connected with the reset terminal RST of single-chip microcomputer.State storage unit comprises eeprom chip and for the second source unit of its power supply.
When system moved, the watchdog circuit unit was also along with startup, and its timer circuit begins Auto-counting, and single-chip microcomputer is exported a counting reset signal at set intervals to the signal input part of timer circuit, and timer circuit will be counted zero clearing, the New count of laying equal stress on; When main control singlechip program fleet occurs or endless loop occurs, timer circuit will no longer be received the counting reset signal, this moment, its counter will overflow, thereby cause interruption, when interrupting occuring, timer circuit will be by signal output part reset signal of reset terminal RST transmission to main control singlechip, and main control singlechip is received the laggard horizontal reset of reset signal.
Simultaneously, can also real time record main control singlechip running status and parameter in system's run time behaviour storage unit, in case after main control singlechip occurring and resetting, the data of storing in can the reading state storage unit return to original state, avoid loss of data.
The present embodiment is more excellent embodiment of the present utility model; need to prove; in the situation that do not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (4)
1. electric automobile datalogger, comprise the main control singlechip for the battery operated state parameter of real time record, and be connected to storage unit on main control singlechip, it is characterized in that, also be provided with the watchdog circuit unit that is connected with main control singlechip and the state storage unit that is used for the current main control singlechip running status of real time record and parameter.
2. electric automobile datalogger according to claim 1 is characterized in that: described watchdog circuit unit comprises timer circuit and is the first power supply unit of its power supply.
3. electric automobile datalogger according to claim 1, it is characterized in that: described timer circuit is provided with signal input part and the signal output part that is connected with main control singlechip, and signal output part is connected with the reset terminal RST of single-chip microcomputer.
4. electric automobile datalogger according to claim 1, it is characterized in that: described state storage unit comprises eeprom chip and is the second source unit of its power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688557 CN202929707U (en) | 2012-12-14 | 2012-12-14 | Electric vehicle data logger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220688557 CN202929707U (en) | 2012-12-14 | 2012-12-14 | Electric vehicle data logger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202929707U true CN202929707U (en) | 2013-05-08 |
Family
ID=48219645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220688557 Expired - Fee Related CN202929707U (en) | 2012-12-14 | 2012-12-14 | Electric vehicle data logger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202929707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113296433A (en) * | 2021-04-28 | 2021-08-24 | 成都秦川物联网科技股份有限公司 | Singlechip resetting method |
-
2012
- 2012-12-14 CN CN 201220688557 patent/CN202929707U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113296433A (en) * | 2021-04-28 | 2021-08-24 | 成都秦川物联网科技股份有限公司 | Singlechip resetting method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20191214 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |