WO2012028115A1 - 一种土地质量测定装置 - Google Patents

一种土地质量测定装置 Download PDF

Info

Publication number
WO2012028115A1
WO2012028115A1 PCT/CN2011/081305 CN2011081305W WO2012028115A1 WO 2012028115 A1 WO2012028115 A1 WO 2012028115A1 CN 2011081305 W CN2011081305 W CN 2011081305W WO 2012028115 A1 WO2012028115 A1 WO 2012028115A1
Authority
WO
WIPO (PCT)
Prior art keywords
sensor
model
land quality
circuit
chip
Prior art date
Application number
PCT/CN2011/081305
Other languages
English (en)
French (fr)
Inventor
骆炳森
Original Assignee
Lok Pingsum
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lok Pingsum filed Critical Lok Pingsum
Publication of WO2012028115A1 publication Critical patent/WO2012028115A1/zh

Links

Images

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13Receivers
    • G01S19/14Receivers specially adapted for specific applications

Definitions

  • the difference in land quality is essentially the difference in land productivity.
  • the land quality can be expressed by measurable land attributes, that is, land characteristics indicators, or by land productivity indicators, such as output, output value, net output value, net income, profit, and grade difference income.
  • the determination of land quality is of great significance for the development of the value of agriculture, forestry, animal husbandry and fishery.
  • the Chinese invention patent application publication number CN101441669A discloses a "field investigation system based on PDA, GPS, GIS and GPRS", and its technical solution is "including a mobile terminal interconnected through a network or a GPRS wireless network”.
  • the mobile terminal is a PDA terminal including a PDA memory and a display window, the PDA terminal has a communication interface and a data line interface, and integrates the following functional modules: a layer management module, a graphic display module, and information Query module, GPS navigation and positioning module, data acquisition module, GPRS communication module and system management module;
  • the server end is a computer database application server device, integrated with the following functional modules: system configuration module, data management module, survey data preparation Module, spatial data service module, survey data receiving and storage module, survey supervision and inspection module, data summary statistics module and spatial query display module.”
  • the mobile terminal first obtains the configuration file from the server side and generates different ones according to the configuration file.
  • User interface to meet the needs of different industries, to achieve versatility, because it is only a universal module, although it can be used for field investigations in many fields such as land, geology, agriculture, forestry, environmental protection, etc.
  • the determination of land quality belongs to the specific application field and has special characteristics.
  • the field investigation system based on PDA, GPS, GIS and GPRS in the comparison document 1 is applied to the patent application of the utility model, and only the data is set in the general system.
  • the difference between the comparison document 1 and the patent application of the utility model is: (1) setting a GPS receiver, a slope measuring sensor, a silver-silver chloride reference composite PH value sensor; (2) selecting a model of the central processing unit LPC2101; 3) A touch screen driver chip of type ADS7843 electrically connected with the central processing unit is provided; (4) the radio frequency circuit includes a transceiver, a GSM chip and a SIM card connected with the GSM chip, wherein the model of the GSM chip is TC35, and is transmitted and received.
  • the model number is SP3223.
  • the utility model patent application adopts GPS receiver, slope measuring sensor, silver-silver chloride reference composite PH value sensor, and adopts position data and slope calculation, which is a plurality of functions.
  • the touch screen driver chip driven by the touch screen driver chip of ADS7843 on the one hand, it is convenient for the user's operation, on the other hand, the efficient automation of the land quality measuring device is improved, and there is no technical field in the land quality measuring device. Recorded.
  • RF circuit is composed of transceiver, GSM chip and SIM card, which is different from the GPRS communication module in the comparison file 1, the cost of GSM is lower than the cost of GPRS, and has the characteristics of cost saving, the utility
  • the new patent application officially chose a radio frequency circuit mainly composed of GSM chips because of the need to reduce the cost of use.
  • LPC2101 is a central processing unit as a sensor node, which itself is provided with an external interface of the sensor, and can receive data, as well as the analysis of the received data and the application in the special technical field.
  • the purpose of the present invention is to provide a land quality measuring device with efficient automation and cost saving in order to avoid the deficiencies in the prior art.
  • a land quality measuring device comprising a central processing unit, a power supply circuit, a radio frequency circuit, a GPS receiver, a slope measuring sensor, a silver-silver chloride reference composite PH value sensor, a touch screen driving chip of the type ADS7843, and an LCD liquid crystal a display circuit, the power supply circuit, the radio frequency circuit, the GPS receiver, the slope measuring sensor, the silver-silver chloride reference composite PH value sensor, and the touch screen driving chip of the model ADS7843 respectively
  • the central processing unit is electrically connected, and the LCD liquid crystal display circuit is electrically connected to the touch screen driving chip, and the model of the central processing unit is LPC2101.
  • the radio frequency circuit includes a transceiver, a GSM chip, and a SIM card connected to the GSM chip.
  • the model of the GSM chip is TC35.
  • the transceiver is model SP3223.
  • the utility model has the beneficial effects that the land quality measuring device of the utility model comprises a central processing unit, a power supply circuit, a radio frequency circuit, a GPS receiver, a slope measuring sensor, a silver-silver chloride reference composite PH value sensor, Model ADS7843 touch screen driver chip and LCD liquid crystal display circuit, power circuit, RF circuit, GPS receiver, slope measurement sensor, silver-silver chloride reference composite PH value sensor and model ADS7843 touch screen driver chip and central processing respectively
  • the device is electrically connected, and the LCD liquid crystal display circuit is electrically connected to the touch screen driver chip.
  • the model of the central processing unit is LPC2101. Compared with the prior art, the utility model overcomes the traditional manual operation for the land quality measurement mode, has the characteristics of high efficiency and automation, and can save cost.
  • FIG. 1 is a schematic structural view of a land quality measuring device of the present invention
  • FIG. 2 is a schematic view showing the circuit structure of a land quality measuring device of the present invention.
  • Figure 2 includes: 1 - central processor, 2 - power circuit, 3 - RF circuit, 4 - GPS receiver, 5 - slope measurement sensor, 6 - PH sensor, 7 ——LCD liquid crystal display circuit, 8——Touch screen driver chip.
  • FIG. 1 and FIG. 2 A specific embodiment of a land quality measuring device of the present invention is shown in FIG. 1 and FIG. 2, and includes a central processing unit 1, a power supply circuit 2, a radio frequency circuit 3, a GPS receiver 4, a slope measuring sensor 5, and a PH value. a sensor 6, a touch screen driving chip 8 and an LCD liquid crystal display circuit 7, the power supply circuit 2, the radio frequency circuit 3, the GPS receiver 4, the slope measuring sensor 5, the PH value sensor 6, and the touch screen
  • the driving chip 8 is electrically connected to the central processing unit 1 respectively.
  • the LCD liquid crystal display circuit 7 is electrically connected to the touch screen driving chip 8.
  • the model of the central processing unit 1 is LPC2101.
  • the central processing unit 1 receives the position data, the slope data, and the PH value data through the GPS receiver 4, the slope measuring sensor 5, and the PH value sensor 6, respectively, for analysis and calculation, thereby obtaining the quality of the land.
  • the pH sensor 6 is a silver-silver chloride reference composite PH value sensor.
  • the model of the touch screen driving chip 8 is ADS7843.
  • the radio frequency circuit 3 includes a GSM chip and a SIM card connected to the GSM chip.
  • the model used in the GSM chip is TC35.
  • the TC35 is a new-generation wireless communication GSM module from Siemeils. With RS232 communication interface, it can easily communicate with PC and MCU. Data, voice transmission, and short message service in system solutions can be implemented quickly, safely and reliably (Short Message Service) and fax.
  • the operating voltage of the TC35 module is 3.3-5.5V, which can work in two frequency bands of 900MHz and 1800MHz.
  • the power consumption of the TC35 module is 2w (900M) and 1w (1800M) respectively.
  • the module has an AT command set interface, supports text and PDU mode short messages, a third set of Class 2 fax, and 2.4k, 4.8k, 9.6k non-transparent mode.
  • the module also has a phone book function, multi-party call, roaming detection function, common working mode has power saving mode, IDLE, TALK and other modes. Bidirectional transmission of power connections, commands, data, voice signals, and control signals through a unique 40-pin ZIF connector.
  • the SIM card holder and antenna can be connected separately via a ZIF connector and a 50 ⁇ antenna connector.
  • the TC35 module is mainly composed of a GSM baseband processor, a GSM radio frequency module, an power supply module (ASIC), a flash memory, a ZIF connector, and an antenna interface.
  • the baseband processor mainly handles voice and data signals within the GSM terminal and covers all analog and digital functions in the cellular RF device. FR, HR, and EFR voice channel coding can be supported without the need for additional hardware circuitry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

一种土地质量测定装置,包括有中央处理器、电源电路、射频电路、GPS接收器、坡度测量传感器、PH值传感器、触摸屏驱动芯片和LCD液晶显示电路,所述电源电路、所述射频电路、所述GPS接收器、所述坡度测量传感器、所述PH值传感器和所述触摸屏驱动芯片分别与所述中央处理器电连接,所述LCD液晶显示电路与所述触摸屏驱动芯片电连接,所述中央处理器的型号为LPC2101。该土地质量测定装置与现有技术相比,克服了传统的人工作业进行土地质量测定的模式,具有高效自动化的特点,同时还可以节约成本。

Description

一种土地质量测定装置
技术领域
本实用新型涉及土地质量测定技术领域,特别是涉及一种土地质量测定装置。
背景技术
土地质量的差别,实质上是土地生产力高低的差异。土地质量可以用可度量测定的土地属性,即土地特性指标综合表述,也可以用土地生产力的指标表示,如产量、产值、净产值、纯收入、利润、级差收益等。土地质量的测定对发展农、林、牧、渔业的价值具有重要的意义。
现有技术中对土地质量的测评是采用人工作业,通过测评人员到监测采样点进行样品采集,然后带回检测中心进行检测,这种监测方式人工成本高、效率低,而且样品的运输和保存也增加了整体测定的成本。
中国发明专利申请公开号为CN101441669A(以下简称对比文件1)公开了一种“基于PDA、GPS、GIS和GPRS的野外调查系统”,其技术方案为“包括通过网络或GPRS无线网络互联的移动终端和服务器端;所述移动终端是一种包括PDA存储器和显示窗口的PDA终端,所述PDA终端具有通讯接口和数据线接口,并集成有下列功能模块:图层管理模块、图形显示模块、信息查询模块、GPS导航定位模块、数据采集模块、GPRS通讯模块和系统管理模块;所述服务器端是一种计算机数据库应用服务器设备,集成有下列功能模块:系统配置模块、数据管理模块、调查数据准备模块、空间数据服务模块、调查数据接收入库模块、调查监督检查模块、数据汇总统计模块以及空间查询显示模块。” 上述专利的技术实质是根据其背景技术中所提出的“目前在PDA上运行GIS,大部分工作都是针对某个具体领域所开展的示范研究,只是部分解决了实际中所需要的技术问题,不具备大范围应用的基础”(参见CN101441669A公开文本说明书第4页第11行至第14行)的缺陷,而提出了“将移动终端首先从服务器端获得配置文件,并根据配置文件生成不同的用户界面,从而满足不同行业运行的需要,实现了通用性”,由于其仅仅是一种通用性模块,虽然能够适合土地、地质、农业、林业、环保等多个领域的野外调查使用,但是,土地质量的测定属于具体的应用领域,具有特殊性,将对比文件1中的基于PDA、GPS、GIS和GPRS的野外调查系统应用于本实用新型专利申请中,仅告知在通用系统中设置有数据采集模块,但是本领域的技术人员还是不清楚如何具体让通用的模块选取土地质量的测定指标,实现在该土地质量测定的具体应用领域上的操作,即选用何种属性的采集数据、选择何种中央处理单元等从而实现具有高效自动化,且节约成本的土地质量测定装置。
对比文件1与本实用新型专利申请的区别在于:(1)设置GPS接收器、坡度测量传感器、银-氯化银参比复合PH值传感器;(2)选择中央处理器的型号为LPC2101;(3)设置有与中央处理器电连接的型号为ADS7843的触摸屏驱动芯片;(4)射频电路包括有收发器、GSM芯片和与GSM芯片相连接的SIM卡,其中GSM芯片的型号为TC35,收发器的型号为SP3223。
对比说明:针对区别技术特征(1)本实用新型专利申请采用GPS接收器、坡度测量传感器、银-氯化银参比复合PH值传感器,通过采用位置数据、坡度运算,是集多种功能于一体的;而PDA仅是一个存储器,LPC2101的功能要多过PDA。针对区别技术特征(3)采用ADS7843的触摸屏驱动芯片驱动的触摸屏驱动电路,一方面方便使用者的操作,另一方面提高了土地质量测定装置的高效自动化,在土地质量测定装置的技术领域尚未有记载。针对区别技术特征(4)射频电路是由收发器、GSM芯片以及SIM卡组成,其区别于对比文件1中的GPRS通讯模块,GSM的成本较GPRS的成本低,具有节约成本的特点,本实用新型专利申请正式由于要降低使用成本,才选用了主要由GSM芯片组成的射频电路。
综上,人们在对比文件1的基础上是无法解决本实用新型专利所提出的实现“具有高效自动化,且节约成本的土地质量测定装置” 的技术问题。因此,本领域内的技术人员在上述专利的基础上仍需要付出创造性的劳动采用合理的技术方案“中央处理器、电源电路、射频电路、GPS接收器、坡度测量传感器、银-氯化银参比复合PH值传感器、型号为ADS7843的触摸屏驱动芯片和LCD液晶显示电路,所述电源电路、所述射频电路、所述GPS接收器、所述坡度测量传感器、所述银-氯化银参比复合PH值传感器和所述型号为ADS7843的触摸屏驱动芯片分别与所述中央处理器电连接,所述LCD液晶显示电路与所述触摸屏驱动芯片电连接,所述中央处理器的型号为LPC2101”,从而实现在土地质量测数据,以及银-氯化银参比属性的PH值数据进行测定,通过中央处理器接收、分析与运算,从而得出土地质量的优劣。采用GPS接收器、坡度测量传感器、银-氯化银参比复合PH值传感器这三种数据采集,是考虑了土地测量评定的准确性以及属性数据的可得性,同时还考虑了检测成本的经济性。针对区别技术特征(2)LPC2101是一种作为传感器节点的中央处理单元,其本身设置有传感器的外接接口,同时可以接收数据,以及对接收的数据的分析与定特殊技术领域中的应用。
因此,针对现有技术中的不足,亟需提供一种具有高效自动化,且节约成本的土地质量测定装置。
实用新型内容
本实用新型的目的在于避免现有技术中的不足之处而提供一种具有高效自动化,且节约成本的土地质量测定装置。
本实用新型的目的通过以下技术方案实现:
提供一种土地质量测定装置,包括有中央处理器、电源电路、射频电路、GPS接收器、坡度测量传感器、银-氯化银参比复合PH值传感器、型号为ADS7843的触摸屏驱动芯片和LCD液晶显示电路,所述电源电路、所述射频电路、所述GPS接收器、所述坡度测量传感器、所述银-氯化银参比复合PH值传感器和所述型号为ADS7843的触摸屏驱动芯片分别与所述中央处理器电连接,所述LCD液晶显示电路与所述触摸屏驱动芯片电连接,所述中央处理器的型号为LPC2101。
所述射频电路包括有收发器、GSM芯片和与所述GSM芯片相连接的SIM卡。
所述GSM芯片的型号为TC35。
所述收发器的型号为SP3223。
本实用新型的有益效果:本实用新型的一种土地质量测定装置,包括有中央处理器、电源电路、射频电路、GPS接收器、坡度测量传感器、银-氯化银参比复合PH值传感器、型号为ADS7843的触摸屏驱动芯片和LCD液晶显示电路,电源电路、射频电路、GPS接收器、坡度测量传感器、银-氯化银参比复合PH值传感器和型号为ADS7843的触摸屏驱动芯片分别与中央处理器电连接,LCD液晶显示电路与触摸屏驱动芯片电连接,中央处理器的型号为LPC2101。本实用新型与现有技术相比,克服了传统的人工作业进行土地质量测定模式,具有高效自动化的特点,同时可以节约成本。
附图说明
利用附图对本实用新型作进一步说明,但附图中的实施例不构成对本实用新型的任何限制。
图1是本实用新型的一种土地质量测定装置的结构示意图;
图2是本实用新型的一种土地质量测定装置的电路结构示意图。
在图1、图2中包括:1——中央处理器、2——电源电路、3——射频电路、4——GPS接收器、5——坡度测量传感器、6——PH值传感器、7——LCD液晶显示电路、8——触摸屏驱动芯片。
具体实施方式
结合以下实施例对本实用新型作进一步描述:
本实用新型的一种土地质量测定装置的具体实施方式如图1和图2所示,包括有中央处理器1、电源电路2、射频电路3、GPS接收器4、坡度测量传感器5、PH值传感器6、触摸屏驱动芯片8和LCD液晶显示电路7,所述电源电路2、所述射频电路3、所述GPS接收器4、所述坡度测量传感器5、所述PH值传感器6和所述触摸屏驱动芯片8分别与所述中央处理器1电连接,所述LCD液晶显示电路7与所述触摸屏驱动芯片8电连接,所述中央处理器1的型号为LPC2101。中央处理器1通过GPS接收器4、坡度测量传感器5和PH值传感器6分别接收位置数据、坡度数据和PH值数据进行分析与运算,从而得出土地质量的优劣。
其中,PH值传感器6为银-氯化银参比复合PH值传感器。
其中,触摸屏驱动芯片8的型号为ADS7843。
其中,射频电路3包括有GSM芯片和与所述GSM芯片相连接的SIM卡。
其中,GSM芯片所采用的型号为TC35。TC35是Siemeils公司推出的新-代无线通信GSM模块。自带RS232通讯接口,可以方便地与PC机、单片机连机通讯。可以快速、安全、可靠地实现系统方案中的数据、语音传输、短消息服务(Short Message Service)和传真。TC35模块的工作电压为3.3—5.5V,可以工作在900MHz和1800MHz两个频段,所在频段功耗分别为2w(900M)和1w(1800M)。模块有AT命令集接口,支持文本和PDU模式的短消息、第三组的二类传真、以及2.4k,4.8k,9.6k的非透明模式。此外,该模块还具有电话簿功能、多方通话,漫游检测功能,常用工作模式有省电模式、IDLE、TALK等模式。通过独特的40引脚的ZIF连接器,实现电源连接、指令、数据、语音信号、及控制信号的双向传输。通过ZIF连接器及50Ω天线连接器,可分别连接SIM卡支架和天线。TC35模块主要由GSM基带处理器、GSM射频模块、供电模块(ASIC)、闪存、ZIF连接器、天线接口六部分组成。作为TC35的核心,基带处理器主要处理GSM终端内的语音、数据信号,并涵盖了蜂窝射频设备中的所有的模拟和数字功能。在不需要额外硬件电路的前提下,可支持FR、HR和EFR语音信道编码。
最后应当说明的是,以上实施例仅用以说明本实用新型的技术方案,而非对本实用新型保护范围的限制,尽管参照较佳实施例对本实用新型作了详细地说明,本领域的普通技术人员应当理解,可以对本实用新型的技术方案进行修改或者等同替换,而不脱离本实用新型技术方案的实质和范围。

Claims (4)

1.一种土地质量测定装置,其特征在于:包括有中央处理器、电源电路、射频电路、GPS接收器、坡度测量传感器、银-氯化银参比复合PH值传感器、型号为ADS7843的触摸屏驱动芯片和LCD液晶显示电路,所述电源电路、所述射频电路、所述GPS接收器、所述坡度测量传感器、所述银-氯化银参比复合PH值传感器和所述型号为ADS7843的触摸屏驱动芯片分别与所述中央处理器电连接,所述LCD液晶显示电路与所述触摸屏驱动芯片电连接,所述中央处理器的型号为LPC2101。
2.根据权利要求1所述的土地质量测定装置,其特征在于:所述射频电路包括有收发器、GSM芯片和与所述GSM芯片相连接的SIM卡。
3.根据权利要求2所述的土地质量测定装置,其特征在于:所述GSM芯片的型号为TC35。
4.根据权利要求2所述的土地质量测定装置,其特征在于:所述收发器的型号为SP3223。
PCT/CN2011/081305 2010-09-01 2011-10-26 一种土地质量测定装置 WO2012028115A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201020516909 2010-09-01
CN201020516909.X 2010-09-01

Publications (1)

Publication Number Publication Date
WO2012028115A1 true WO2012028115A1 (zh) 2012-03-08

Family

ID=45772178

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/081305 WO2012028115A1 (zh) 2010-09-01 2011-10-26 一种土地质量测定装置

Country Status (1)

Country Link
WO (1) WO2012028115A1 (zh)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1144537A (ja) * 1997-07-30 1999-02-16 Agency Of Ind Science & Technol 柱状試料を用いた面構造方位測定装置及び面構造方位測定方法
JP2001348857A (ja) * 2000-06-09 2001-12-21 Unyu Shisetsu Setsubi Jigyodan 地盤環境モニタリングコーンによる地盤調査法とその装置
CN2545611Y (zh) * 2002-06-05 2003-04-16 北京师范大学 土壤表面形态变化测量仪
CN101441669A (zh) * 2008-12-31 2009-05-27 中国科学院遥感应用研究所 基于pda、gps、gis和gprs的野外调查系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1144537A (ja) * 1997-07-30 1999-02-16 Agency Of Ind Science & Technol 柱状試料を用いた面構造方位測定装置及び面構造方位測定方法
JP2001348857A (ja) * 2000-06-09 2001-12-21 Unyu Shisetsu Setsubi Jigyodan 地盤環境モニタリングコーンによる地盤調査法とその装置
CN2545611Y (zh) * 2002-06-05 2003-04-16 北京师范大学 土壤表面形态变化测量仪
CN101441669A (zh) * 2008-12-31 2009-05-27 中国科学院遥感应用研究所 基于pda、gps、gis和gprs的野外调查系统

Similar Documents

Publication Publication Date Title
Mo et al. Automatic measurement and reporting system of water quality based on GSM
CN102915018B (zh) 基于wifi 的分布式环境监测系统
CN102917063A (zh) 基于北斗定位系统的便携式环保参数采集装置
CN204537422U (zh) 一种基于手机短息的智能压力变送器
CN201708928U (zh) 一种个人定位装置
WO2012028115A1 (zh) 一种土地质量测定装置
CN208424789U (zh) 一种基于LoRa通信技术的实验设备
CN204596135U (zh) 燃气表远程抄表网络系统
CN205300642U (zh) 基于gps的温湿度监测系统
CN201328120Y (zh) 基于tetra的路测终端
CN202994783U (zh) 一种基于单片机的土壤湿度检测系统
CN203069547U (zh) 一种基于手机耳机接口的血糖仪
CN203407019U (zh) 一种矿用wifi无线通讯人员定位管理系统
CN201611952U (zh) 一种基于商用数据卡的通信流量测试装置
CN208623658U (zh) 一种对讲机
CN203134098U (zh) 一种无线低功耗温湿度采集器
CN201600160U (zh) 手持式自来水抄表器
CN104700595A (zh) 一种基于手机短息的智能压力变送器
CN206472192U (zh) 一种地理信息标定位信息采集探头
CN220730974U (zh) 一种无信控交叉口安全装置
CN201018631Y (zh) Gsm/gprs综合测试仪
CN205246643U (zh) 便携式河湖水质在线监测仪表
CN201964943U (zh) 一种采用wifi体制的电子体重计
CN201964942U (zh) 一种采用gprs体制的电子体重计
CN219320327U (zh) 一种低功耗的流速流量计

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11821141

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205 DATED 01.07.2013)

122 Ep: pct application non-entry in european phase

Ref document number: 11821141

Country of ref document: EP

Kind code of ref document: A1