CN102722920B - Black box - Google Patents
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- CN102722920B CN102722920B CN201110457106.0A CN201110457106A CN102722920B CN 102722920 B CN102722920 B CN 102722920B CN 201110457106 A CN201110457106 A CN 201110457106A CN 102722920 B CN102722920 B CN 102722920B
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Abstract
The invention discloses a black box. The black box has a compact main body structure, a small volume, light weight and good heat radiation. The black box is protected by multiple protection methods and thus shock-proof, electricity-proof and interference-proof capabilities are greatly improved. The black box is provided with an industrial grade main board, and can resist a high temperature and interference and continuously run for 24 hours. In a respect of data security, internal data of the black box can not be looked up without enough authority; and the black box has a safe locking function and thus an unauthorized user cannot read, copy and tamper any data of the black box without using a specialized unlocking tool. In a respect of network ensurance, in the case of routine network interruption of a station, the black box can communicate with a quality management system by a network communication module carried by the black box. In a respect of carrying convenience, if network and 3G signals do not exist in a stirring station, the black box needs to be regularly moved to an area where network signals exist so that index synchronization is realized. In a respect of intelligent protection, the black box can automatically shut down software and an operating system of its own when a power supply is interrupted accidentally, and can automatically start the operating system and the software when power is supplied again.
Description
Technical field
The utility model relates to a kind of commercial scale plant, and specifically, the utility model is the electronic device (abbreviation black box) of a kind of qualitative data special in ready-mixed concrete industry and confidential data transmission, record.
Background technology
Ready-mixed concrete is also known as commerical ready-mixed concrete, essence is exactly this for concrete primary building material, from getting the raw materials ready, mixing is to production links such as transporting, build, spin off from traditional site operation, by the concentrated batch production of highly-specialised, become the building materials commodity that an independent accounting is produced.Because it is in guarantee construction quality, reduce energy consumption, save construction land tenure, improve working conditions, reduce the aspects such as environmental pollution advantagious, receive the great attention of relevant government department, in Department of Commerce of the Chinese government on October 16th, 2003, the Ministry of Public Security, the Ministry of Construction, Ministry of Communications combines [2003] No. 341 files of having promulgated that business sends elsewhere: since " forbidding the notice at city, city job mix concrete about time limit ", the concrete development of China formally enters high-speed development period, especially world financial crisis in 2009, since the Chinese government drops into 4,000,000,000,000 fund promote domestic demands, various places Concrete Industry development is especially in the gesture of rapidly not falling, large quantities of investor enters Concrete Industry, top of the world is breached at one stroke in concrete output.
But in the behind of industry high speed development, concrete technology is despised because practitioner exists, add and do not possess effective quality monitoring means, the evaluation of concrete Quality Control system to concrete quality is caused to there is serious hysteresis phenomenon, concrete quality assurance ability is but in trend of falling, not accommodating doubtful, because concrete technology is complicated, technique, material, the aspect Problems existing such as management and control device, concrete production quality is caused to there is unpredictalbe risk and hidden danger all the time, this risk and hidden danger will cause quality accident more than a threshold value.Due to concrete unrepairable, once there is quality accident, the loss that the lives and properties of the country and people cause tool large will be given.Such example happens occasionally in the whole nation, and lesson is deep.Mainly contain the reason of the following aspects:
Ready-mixed concrete, between building operation and building materials, is an emerging industry, and due to the trade division that tradition is for many years formed, ready-mixed concrete is in industry edge all the time, the policy that the lack of control of government to industry is suitable for and necessary means;
The characteristic that concrete is intrinsic: the factor and the link that affect quality are many, and enchancement factor is also many, so be difficult to make concrete quality be in effective slave mode all the time,
Concrete quality Prior Control lacks effective method and means, and quality inspection and acceptance delayed (general 28 days), is substantially equal to be " after death autopsy ", and when often pinpointing the problems, loss cannot be avoided.
For current domestic Concrete Industry, concrete quality is the most unmanageable basic point of current enterprise, concrete is made to get rid of external condition and people is the interference caused from producing in the process that uses, finally reach the quality required by design, want play returns of investment to greatest extent and guarantee construction quality, just must from the selection of concrete production material, analyze, storage condition, state when coming into operation, preparation technique, production technology, traffic condition, irrigation conditions, construction technology, maintenance condition, all factors affecting concrete quality such as weather effect carry out whole process sampling and monitoring, in good time and design standards parameter compares, and regulating measures is proposed, ensure that often criticizing concrete all reaches quality requirements, and by all data by network delivery to the data analysis of specifying, storage center carries out analyzing and early warning.Set up a set of complete product quality database, with controllability and the trackability of improving the quality of products.
Summary of the invention
The object of this practical type:
Set up quality and confidential data and transmit the memory device (black box) with record, real record, store and produce concrete actual match ratio at every turn, once pinpoint the problems, be convenient to check and review.
According to concrete quality Problems existing, make great efforts and study this science, effective Prior Control and memory device, on affecting the major parameter (as the rationality of match ratio, measurement deviation, cement breeze and the serviceability temperature of water, concrete out-of-machine temperature, the slump etc.) of concrete quality and the supervision of process procedure (mixing time, haulage time etc.) early excise, control and measurement, managerial personnel can realize multi-point remote On-line monitor, instant alarming when exceeding permissible variation, to take corrective action in time, prevent from proceeding to next process.
The utility model, by implementing antecedent supervision and control, concrete quality production overall process can be made to be in slave mode all the time, acceptance condition can be reached under normal distribution, avoid " after death autopsy " and " mending the fold after the sheep is lost ", to improving concrete quality, avoid quality accident, reduce the loss, the evidence obtaining of quality problems is very necessary and timely.
The utility model solves the technical scheme that its technical matters adopts:
First Quality Monitoring Control System formulates " black box " equipment that unified report encryption rule is handed down to website, when information management system false proof interface requirement of form according to both sides' agreement in early stage after the data involved by generating report forms, its core data of this form is passed and " black box " equipment, the encryption rule that " black box " equipment issues according to Quality Monitoring Control System is encrypted the form core data imported into, the character string obtained after being encrypted returns to information management system, and its ciphering process is uploaded and QCM system, then the form of its encrypted characters string bar code is printed in report when printing reports by information management system, finally our " test a yard device " scanning device special for inspector is equipped with, inspector can use this equipment to carry out scanning to the upper bar code of report and obtain encrypted characters string, the core data of form is obtained after its character string is decrypted, inspector carries out contrasting its true or false reported of rear identifiable design to the data of decomposing on the form core data that obtains and form, the mode that existing superintendent office examines for technical report is changed thoroughly with this, for the validity improving quality supervision lays the foundation.
For achieving the above object; the utility model black box, comprises wired communication interface, wireless network communication module, CPU, memory grain, functional form chip, coprocessor, mainboard, hard disk, instruction control module, heat abstractor, power-off protection apparatus, safety lock equipment, Data Input Interface, state display and touch apparatus, casing, instruction opertaing device, power interface, MICK/Audio interface, USB interface, COM1 interface, LOCK interface, USB interface, status indicator lamp, data transfer interface.It is characterized in that: the utility model black box profile is by described casing, and described casing is divided into upper cover and lower cover two parts, the display of upper cover laying state is ground floor with touch apparatus; Lower cover is made up of two-layer, is instruction opertaing device respectively, MICK/Audio interface, USB interface, COM1 interface, LOCK interface, USB interface, status indicator lamp be the second layer; Wired communication interface, wireless network communication module, CPU, memory grain, functional form chip, coprocessor, mainboard, hard disk, instruction opertaing device, heat abstractor, power-off protection apparatus, power interface are third layer.
In technique scheme, CPU, memory grain, functional chip, coprocessor, heat abstractor are placed in described mainboard top, and described CPU, memory grain, functional chip, coprocessor, heat abstractor are arranged on the same plane parallel with described mainboard; Hard disk and power-off protection apparatus is placed on the right side of described mainboard; Wireless communication module is placed on the left of described mainboard; On the same plane that described hard disk, power-off protection apparatus, wireless communication module are parallel with described mainboard; Wired communication interface, power interface is placed on the upside of described mainboard; Instruction opertaing device is placed on the downside of described mainboard; Described wired communication interface, power interface, instruction opertaing device are parallel with described mainboard at grade;
In technique scheme; the bottom of the lower cover of described casing is lined with shockproof, anti-electric, radiation proof interference special protection net; describedly to be placed on protection network with the relevant device of mainboard in same level, and to be fixed with full dog point socket set, to reach the protected effect of enhancing.Mainboard is covered with layer of metal plate, for strengthening inner structural strength, the dispersion of auxiliary internal heat, prevents electromagnetic interference (EMI); Described sheet metal is fixed on CPU, memory grain, functional chip, heat abstractor on mainboard also described in covering.
In technique scheme, described instruction opertaing device, MICK/Audio interface, USB interface, COM1 interface, LOCK interface, USB interface, status indicator lamp are arranged at the top of the lower cover of described casing; Described instruction opertaing device, MICK/Audio interface, USB interface, COM1 interface, LOCK interface, USB interface, status indicator lamp are at grade.The upside of instruction opertaing device is from left to right arranged in order MICK/Audio interface, USB interface three, one, LOCK interface, COM port or COM device or COM1, VGA mouth, status indicator lamp, wherein MICK interface and Audio interface are divided into and are arranged above and below, and are above be Audio interface under MICK interface; Wherein in USB interface, USB1 and USB2, for being arranged above and below, is above be USB2 interface under USB1 interface; Wherein USB3 interface and LOCK interface are arranged above and below, and are above be LOCK interface under USB3 interface; Wherein COM1 interface and USB interface are arranged above and below, and are above be LOCK interface under COM1 interface; Wherein status indicator lamp three part composition, is from left to right arranged in order POWER pilot lamp, HDD pilot lamp, KB pilot lamp.
In technique scheme, the upper cover of described casing reportedly send interface to form by the display of described state with touch apparatus and a number; State display and touch apparatus, data transfer interface are at grade.
In technique scheme, the rear panel of the lower cover of described casing has four row's louvres, heat abstractor, power interface, wired communication interface, bottom and cpu, the heat abstractor of four row's louvres are in same level; Described heat abstractor has two respectively in the both sides of described four row's louvres; Described power interface and described wired communication interface are arranged below louvre described four, and the left side is described wired communication interface, and the right is described power interface.
In technique scheme, described wireless communication module adopts UNICOM WCDMA or WIFI communication module.
In technique scheme, described casing comprises: highstrenghtpiston's alloy casing, handle, buckle, fore shaft; Described casing, handle, buckle, fore shaft, all in the front portion of the lower cover of casing, are in same level; Described fore shaft forms respectively at high order end and the low order end of casing front portion by two; The centre position of described handle before the lower cover of casing; It is described buckle between handle and fore shaft.
In technique scheme, described handle is arch, and the thick span of length and width is respectively 12.2 ± 0.2cm, 5.4 ± 0.2cm, 2.9 ± 0.2cm; The ratio span that length and width are thick is 4.2 ± 0.3: 1.8 ± 0.3: 1.
In technique scheme, described buckle is length and width shape, and length, width and height span is respectively 8.5 ± 0.2cm, 2.4 ± 0.2cm, 1.8 ± 0.2cm; The ratio span of length, width and height is 3.5 ± 0.2: 1.3 ± 0.2: 1.
In technique scheme, the shape of described casing is rectangular parallelepiped, and length, width and height span is respectively 32.6 ± 0.2cm, 27.5 ± 0.2cm, 13.9 ± 0.2cm; The ratio span of length, width and height is 2.3 ± 0.3: 1.9 ± 0.3: 1.
In technique scheme, the working temperature of described power-off protection apparatus :-5 DEG C-50 DEG C; Working relative humidity: 10-90%@40 DEG C, frozen-free.
In technique scheme, described state display is as follows with the parameter of touch apparatus, type: 4 core resistance-types; Resolution: 4096 × 4096; Light transmissibility: 76% ± 2; Transmittance: 80%-90%; On-stream pressure: 25g (general standard)-35g; Impedance operator: 300; Average displacement error: 1%; Mission life: more than 5,000,000 times.
In technique scheme, by wired communication interface Real-time Obtaining quality and confidential data;
In technique scheme, upload quality and confidential data by wired communication interface;
In technique scheme, when wired communication interface is obstructed, upload quality and confidential data by wireless network communication module;
The beneficial effects of the utility model are:
The agent structure of this practical type is compact, and volume is little, lightweight, perfect heat-dissipating; Box house provides multiple protective mode, greatly strengthen shockproof, anti-electric, anti-tampering ability; Equipment configuration technical grade mainboard can high temperature resistance, anti-interference, within 24 hours, run without interruption, can not because equipment the unstable and qualitative data of interrupting information management system technology form and confidential data transmission and record, the software be equipped with in equipment can ensure when information extraction Management System Data, does not produce obviously impact to its system speed;
For secure data area, its inner any data can not be consulted when enough not authorizing; Equipment has safety locking function, holds special unlocking tool without permission and does the data in equipment and anyly to check, copy, the operation such as to distort;
For network guarantee aspect, when website general networks interrupts, black box can utilize self-contained network communication module to realize the communication with quality control system;
For Mobile portable aspect, the website of network and 3G signal is not had at stirring website, we need regular mobile device receive to there being the area of network to carry out index and exceeding standard data upload, and after quality problems appear in its place website, we can move its equipment easily and collect evidence;
For intelligent protection aspect, equipment can automatically close software and system thereof after running into the situations such as power-off, and can automatically start the operating system and software after incoming call.
Of the present utility modelly to have a extensive future, not by the restriction of space and region.
From service layer, the utility model, in conjunction with the present situation of existing concrete manufacturing enterprise, has perspective fully, and for superintendent office provides effective supervision and mechanism of control, effective controlling concerns the links of quality;
From the angle of research and development of software, the research and development technology that the utility model adopts is advanced, and equipment is stablized, and can provide a kind of brand-new regulatory format for concrete group and Concrete Industry quality monitoring department;
Novel aspects, design and R&D of the present utility model has started the beginning in domestic quality monitoring field, accomplishes domestically leading, advanced international standard.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the isometric front view of an embodiment of the present utility model.
Fig. 2 is the reverse side stereographic map of an embodiment of the present utility model.
Fig. 3 is the internal hardware arrangement schematic diagram of an embodiment of the present utility model.
Fig. 4 is the external hardware arrangement schematic diagram of an embodiment of the present utility model.
Embodiment
In the embodiment shown in fig. 1: in order to reach data security, add lockhole (1), aperture 0.9 ± 0.1cm, to the protection that black box carries out physically, can effectively prevent unrelated person random open this equipment; In order to reach being convenient for carrying property and bearing, devise the handle (3) of arch, the thick span of length and width is respectively 12.2 ± 0.2cm, 5.4 ± 0.2cm, 2.9 ± 0.2cm; The ratio span that length and width are thick is 4.2 ± 0.3: 1.8 ± 0.3: 1; Fully ensure that the weight that can bear; In order to reach closure, devise buckle (2), length, width and height span is respectively 8.5 ± 0.2cm, 2.4 ± 0.2cm, 1.8 ± 0.2cm; The ratio span of length, width and height is 3.5 ± 0.2: 1.3 ± 0.2: 1; During use, first buckle (2) is upwards mentioned, its block tongue is made to hook box cover, then a little firmly lower fastener is pressed, make its snap surface vertically, then put into lockhole (1) with Special lock, pin casing upper and lower covers, the handle (3) holding arch just can be carried to each website very easily and carry out project plan and data acquisition, carries out contrary operation when needing to open.
In the embodiment depicted in figure 2: when use black box, the power supply of needs is connected on industrial power source special interface (4), for black box carries out normal power supply, when unexpected power-off time, black box can start power-off protection apparatus and carry out self-protection; The transmission of data generally adopts wired connection mode, by wired communication interface (2), be connected in local network, carry out correlated quality and confidential data transmission and record, when wired connection mode is interrupted, this black box automatically switches to wireless network connected mode, ensure that the normal transmission of data, the real-time of data cube computation; When black box working time is shorter, the heat that black box produces dispels the heat from four rows' louvre (3) automatically, in time running the long period, the threshold temperature that internal heat reaches formulation can start heat abstractor (1), carries out the discharge of heat;
In the embodiment shown in fig. 3: mainboard (1) carry CPU (2), coprocessor (3), functional chip (4), memory grain (6) and, some outer ties interfaces (7), serve main effect, its heat abstractor can start simultaneously carry out radiating treatment by four rows' louvre (3) in embodiment illustrated in fig. 2 when deployed; Outer ties interface (7) primarily of wired connection interface, state display and the data transmission interface of touch apparatus and power interface, power-off protection apparatus connecting interface, instruction opertaing device interface, hard disk power interface and data transmission interface, be external to the interface of middle industrial power source special embodiment illustrated in fig. 2; When after external power source power-off, power-off protection apparatus (12) can start, and can be used for black box equipment work more than 3 hours, and output voltage is 12V; When outside wired communication interface disconnects, automatically can start wireless communication module (8), carry out real-time Communication for Power; These all abnormal conditions are all carried out the distribution of dependent instruction by instruction control module (13); after being processed by distribution arrival CPU (2) of functional chip (4); point to task record that wireless communication module (8) carries out communicating, hard disk (11) carries out status data, the state of power-off protection apparatus (12) ensure, the display of state display and touch apparatus, hard disk (11) can real-time record qualitative data and confidential data.
In the embodiment shown in fig. 4 when black box equipment is enabled, special safety lock equipment is needed to insert LOCK interface (5), status indicator lamp (8) (9) (10) can brighten accordingly, meanwhile state display can show current system state with touch apparatus (1), instruction opertaing device (11) can input corresponding instruction, in the embodiment shown in fig. 3 by instruction control module (13), carry out corresponding instruction reception and registration, also can carry out modification of orders by state display with touch apparatus (1); When the external sound of needs by MICK interface (2), AUDIO interface (3); Connected by USB interface (6) when needs external-connection displayer; If need the software version changing black box to need to pass through USB interface.
Claims (10)
1. black box, comprises wired communication interface, wireless network communication module, CPU, memory grain, functional form chip, coprocessor, mainboard, hard disk, instruction opertaing device, heat abstractor, power-off protection apparatus, safety lock equipment, Data Input Interface, state display and touch apparatus, casing, power interface, MICK/Audio interface, USB interface, COM1 interface, LOCK interface, USB interface, status indicator lamp, data transfer interface; Wherein,
By wired communication interface Real-time Obtaining quality and confidential data;
Quality and confidential data is uploaded by wired communication interface;
Quality and confidential data is uploaded by wireless network communication module when wired communication interface is obstructed.
2. black box according to claim 1, is characterized in that: described casing is respectively upper cover and lower cover two parts, and the display of upper cover laying state is ground floor with touch apparatus; Lower cover is made up of two-layer, is instruction opertaing device respectively, MICK/Audio interface, USB interface, COM1 interface, LOCK interface, USB interface, status indicator lamp be the second layer; Wired communication interface, wireless network communication module, CPU, memory grain, functional form chip, coprocessor, mainboard, hard disk, instruction opertaing device, heat abstractor, power-off protection apparatus, power interface are third layer.
3. black box according to claim 1, it is characterized in that: CPU, memory grain, functional form chip, coprocessor, heat abstractor are placed in described mainboard top, and described CPU, memory grain, functional form chip, coprocessor, heat abstractor are arranged on the same plane parallel with described mainboard; Hard disk and power-off protection apparatus is placed on the right side of described mainboard; Wireless network communication module is placed on the left of described mainboard; Described hard disk, power-off protection apparatus, wireless network communication module and described mainboard are on parallel same plane; Wired communication interface, power interface is placed on the upside of described mainboard; Place on the downside of described mainboard
Instruction opertaing device; Described wired communication interface, power interface, instruction opertaing device with described mainboard on parallel same plane.
4. black box according to claim 3, it is characterized in that: the bottom of the lower cover of described casing is lined with shockproof, anti-electric, radiation proof interference special protection net, describedly be placed on protection network with mainboard at the relevant device of same level, and be fixed with full dog point socket set, to reach the protected effect of enhancing; Mainboard is covered with layer of metal plate, for strengthening the structural strength of black box inside, the dispersion of auxiliary internal heat, prevents electromagnetic interference (EMI); Described sheet metal is fixed on CPU, memory grain, functional chip, heat abstractor on mainboard also described in covering.
5. black box according to claim 1, is characterized in that: described instruction opertaing device, MICK/Audio interface, USB interface, COM1 interface, LOCK interface, USB interface, status indicator lamp are arranged at the top of the lower cover of described casing; Described instruction opertaing device, MICK/Audio interface, USB interface, COM1 interface, LOCK interface, USB interface, status indicator lamp are at grade; The upside of instruction opertaing device is from left to right arranged in order MICK/Audio interface, USB interface three, one, LOCK interface, COM port or COM device or COM1, VGA mouth, status indicator lamp; Wherein MICK interface and Audio interface are divided into and are arranged above and below, and are above be Audio interface under MICK interface; Wherein in USB interface, USB1 and USB2, for being arranged above and below, is above be USB2 interface under USB1 interface; Wherein USB3 interface and LOCK interface are arranged above and below, and are above be LOCK interface under USB3 interface; Wherein COM1 interface and USB interface are arranged above and below, and are above be USB interface under COM1 interface; Wherein status indicator lamp is made up of three parts, is from left to right arranged in order POWER pilot lamp, HDD pilot lamp, KB pilot lamp.
6. black box according to claim 1, is characterized in that: the upper cover of described casing reportedly send interface to form by the display of described state with touch apparatus and a number; State display and touch apparatus, data transfer interface are at grade.
7. black box according to claim 1, it is characterized in that: the rear panel of the lower cover of described casing has four row's louvres, heat abstractor, power interface, wired communication interface, bottom and cpu, the heat abstractor of four row's louvres are in same level; Described heat abstractor has two respectively in the both sides of described four row's louvres; Described power interface and described wired communication interface are arranged below louvre described four, and the left side is described wired communication interface, and the right is described power interface.
8. black box according to claim 1, is characterized in that: described wireless network communication module adopts UNICOM WCDMA or WIFI communication module.
9. black box according to claim 1, is characterized in that: described casing comprises: highstrenghtpiston's alloy casing, handle, buckle, fore shaft; Described highstrenghtpiston's alloy casing, handle, buckle, fore shaft, all in the front portion of the lower cover of casing, are in same level; Described fore shaft forms by two, respectively at high order end and the low order end of casing front portion; The centre position of described handle before the lower cover of casing; It is described buckle between handle and fore shaft.
10. black box according to claim 1, is characterized in that: the shape of described casing is rectangular parallelepiped, and length, width and height span is respectively 32.6 ± 0.2cm, 27.5 ± 0.2cm, 13.9 ± 0.2cm; The ratio span of length, width and height is 2.3 ± 0.3: 1.9 ± 0.3: 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110457106.0A CN102722920B (en) | 2011-12-31 | 2011-12-31 | Black box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110457106.0A CN102722920B (en) | 2011-12-31 | 2011-12-31 | Black box |
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| CN102722920A CN102722920A (en) | 2012-10-10 |
| CN102722920B true CN102722920B (en) | 2015-06-17 |
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| CN201110457106.0A Active CN102722920B (en) | 2011-12-31 | 2011-12-31 | Black box |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2176230Y (en) * | 1993-08-07 | 1994-09-07 | 山东建筑工程学院 | Controller of concrete mixer |
| CN1428259A (en) * | 2002-12-27 | 2003-07-09 | 昆山飞达科技发展有限公司 | Car safety warning recorder and its initial setting, warning and PDA reading method |
| US20030135764A1 (en) * | 2002-01-14 | 2003-07-17 | Kun-Shan Lu | Authentication system and apparatus having fingerprint verification capabilities thereof |
| CN201689313U (en) * | 2010-04-28 | 2010-12-29 | 武汉启鑫物联网技术应用有限公司 | Concrete quality monitoring system based on RFID technology |
-
2011
- 2011-12-31 CN CN201110457106.0A patent/CN102722920B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2176230Y (en) * | 1993-08-07 | 1994-09-07 | 山东建筑工程学院 | Controller of concrete mixer |
| US20030135764A1 (en) * | 2002-01-14 | 2003-07-17 | Kun-Shan Lu | Authentication system and apparatus having fingerprint verification capabilities thereof |
| CN1428259A (en) * | 2002-12-27 | 2003-07-09 | 昆山飞达科技发展有限公司 | Car safety warning recorder and its initial setting, warning and PDA reading method |
| CN201689313U (en) * | 2010-04-28 | 2010-12-29 | 武汉启鑫物联网技术应用有限公司 | Concrete quality monitoring system based on RFID technology |
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| CN102722920A (en) | 2012-10-10 |
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