IOTOS物联中台开发驱动支持NB-IoT光电感烟火灾探测报警器设备

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本文章为原创，转载请注明出处！

登录平台：IOTOS®爱投斯物联中台

账号：iotos_test    密码：iotos123

代码地址：IOTOSDK-Python: IOTOS Python版本SDK，自带原生接口和采集引擎 (gitee.com)

目录

前言

驱动目的

适用范围

使用示例

驱动代码

驱动解析

---

• 前言

        窄带物联网（Narrow Band Internet of Things, NB-IoT）成为万物互联网络的一个重要分支。NB-IoT构建于蜂窝网络，只消耗大约180kHz的带宽，可直接部署于GSM网络、UMTS网络或LTE网络，以降低部署成本、实现平滑升级。NB-IoT的设备可以连接至三大运营商的IoT平台，方便了设备的对接

• 驱动目的

        将连接至电信平台的NB光电感烟火灾探测报警器的数据拿到并上云展示

• 适用范围

        品牌为JTY-GD-TCN，型号为2010或者1010的光电感烟火灾探测报警器 ，能将设备绑定在电信平台

• 使用示例

• 进入爱投斯中台,账号为iotos_test，密码为iotos123，在【创建模板】->【我的模板】，创建模板，填写相关信息，配置需要的参数，参数application为电信平台分配的唯一应用标识（在应用管理栏） ，参数key为电信平台分配的唯一应用标识（在应用管理栏）,productId为电信平台的产品id ,deviceId为电信平台的设备id ,MasterKey在该设备所属产品的概况中可以查看 

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• 进入爱投斯中台,账号为iotos_test，密码为iotos123，创建网关

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• 填好网关名称后点击确认 

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• 创建设备示例点击【我的设备】 -> 【通信网关】 -> 【设备实例】->【创建设备】 

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•  填写【设备名称】、选择刚刚创建的【模板驱动】和【通信网关】。

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•  创建数据点，点击【系统设备】 -> 【通信网关】 -> 【设备实例】 -> 【数据点】，并在【设备实例】下拉列表选择刚刚创建的设备实例

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• 点击右边的创建数据点，填写名称 

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•  并在高级配置中配置数据点的相关标志，“烟雾报警时小区位置信息”，“防拆报警时小区位置信息”，“电池电量”这三个为接收数据的三种数据类型的第一个点，配置"private"属性用于驱动识别，分别配置为smoke_event，tamper_event，show_data,例如“烟雾报警时小区位置信息”这个点的配置：

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•  其他数据数据点中的属性需要填写"point"和"index"，第一种类型的数据点中的point填写"电池电量"该数据的oid，第二类数据点中的point填写"防拆报警时小区位置信息"该数据点的oid，第三类数据点中的point填写"烟雾报警时小区位置信息"该数据点的oid，第一类数据点IMSI、ICCID、物理小区标识、硬件版本、电池电压、参考信号接收功率、终端型号、IMEI、厂家名称、信号与干扰加噪声比、无线信号覆盖等级、心跳周期、数据上传时间、软件版本、小区位置信息。index分别填写15、14、13、.........、1。第二类数据点防拆报警时间、防拆报警时信号强度、防拆报警时终端发射功率、防拆报警、防拆报警时信噪比。index分别填写5、4、3、2、1。第三类数据点烟雾报警时间、烟雾报警时信号强度、烟雾报警时终端发射功率、烟雾报警时信噪比、烟雾浓度、烟雾报警。index分别填写6、5、4、3、2、1。例如烟雾报警：

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•  在【系统设备】 -> 【通信网关】中找到刚才创建的网关，点击【高级】

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•  开启云网关，密码为账号密码

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•  点击 【系统设备】 -> 【通信网关】 -> 【设备实例】->【数据点】，选择刚才创建的设备实例

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• 即可查看数据已经上报成功

 ​

 

• 驱动代码

#coding=utf-8
import sys
sys.path.append("..")
from driver import *
import time
import datetime
from urllib import urlencode
import urllib2
import base64
import hmac
import json
from hashlib import sha1
reload(sys)
sys.setdefaultencoding('utf8')

#签名算法
def signature(key, application, timestamp, param, body):
    code = "application:" + application + "\n" + "timestamp:" + timestamp + "\n"
    for v in param:
        code += str(v[0]) + ":" + str(v[1]) + "\n"
    if (body is not None) and (body.strip()) :
        code += body + '\n'
    return base64.b64encode(hash_hmac(key, code, sha1))

#数据加密
def hash_hmac(key, code, sha1):
    hmac_code = hmac.new(key.encode(), code.encode(), sha1)
    print("hmac_code=" + str(hmac_code.hexdigest()))
    return hmac_code.digest()

#时间戳误差调整
def getTimeOffset(url):
    request = urllib2.Request(url)
    start = int(time.time() * 1000)
    response = urllib2.urlopen(request)
    end = int(time.time() * 1000)

    if response is not None:
        return int(int(response.headers['x-ag-timestamp']) - (end + start) / 2);
    else:
        return 0

baseUrl = 'https://ag-api.ctwing.cn'
timeUrl = 'https://ag-api.ctwing.cn/echo'
offset = getTimeOffset(timeUrl)

#发送http请求函数
def sendSDKRequest(path, head, param, body, version, application, MasterKey, key, method=None, isNeedSort=True,isNeedGetTimeOffset=False):
    paramList = []
    for key_value in param:
        paramList.append([key_value, param[key_value]])
    print("paramList=" + str(paramList))
    if (MasterKey is not None) and (MasterKey.strip()):
        paramList.append(['MasterKey', MasterKey])
    if isNeedSort:
        paramList = sorted(paramList)

    headers = {}
    if (MasterKey is not None) and (MasterKey.strip()):
        headers['MasterKey'] = MasterKey
    headers['application'] = application
    headers['Date'] = str(datetime.datetime.now())
    headers['version'] = version

    temp = dict(param.items())
    if (MasterKey is not None) and (MasterKey.strip()):
        temp['MasterKey'] = MasterKey

    url_params = urlencode(temp)

    url = baseUrl + path
    if (url_params is not None) and (url_params.strip()):
        url = url + '?' + url_params
    print("url=" + str(url))
    global offset
    if isNeedGetTimeOffset:
        offset = getTimeOffset(timeUrl)
    timestamp = str(int(time.time() * 1000) + offset)
    headers['timestamp'] = timestamp
    sign = signature(key, application, timestamp, paramList, body)
    headers['signature'] = sign

    headers.update(head)

    print("headers : %s" % (str(headers)))

    if (body is not None) and (body.strip()):
        request = urllib2.Request(url=url, headers=headers, data=body.encode('utf-8'))
    else:
        request = urllib2.Request(url=url, headers=headers)
    if (method is not None):
        request.get_method = lambda: method
    response = urllib2.urlopen(request)
    if ('response' in vars()):
        print("response.code: %d" % (response.code))
        return response
    else:
        return None

#分页查询设备历史数据
def getDeviceStatusHisInPage(appKey, appSecret, body):
    path = '/aep_device_status/getDeviceStatusHisInPage'
    head = {}
    param = {}
    version = '20190928013337'
    application = appKey
    key = appSecret
    response = sendSDKRequest(path, head, param, body, version, application, None, key, 'POST')
    if response is not None:
        return response.read()
    return None

#查询事件上报
def QueryDeviceEventList(appKey, appSecret, MasterKey, body):
    path = '/aep_device_event/device/events'
    head = {}
    param = {}
    version = '20210327064751'
    application = appKey
    key = appSecret
    response = sendSDKRequest(path, head, param, body, version, application, MasterKey, key, 'POST')
    if response is not None:
        return response.read()
    return None

class Project(IOTOSDriverI):
    def InitComm(self,attrs):
        self.setPauseCollect(False)
        self.setCollectingOneCircle(False)
        self.online(True)

        try:
            #获取中台配置的参数（必不可少）
            self.Nbapplication = self.sysAttrs['config']['param']['application']  # APPKEY
            self.Nbkey = self.sysAttrs['config']['param']['key']  # APPScret
            self.NbMasterKey=self.sysAttrs['config']['param']['MasterKey']  #MasterKey
            # self.NbMasterKey = "5fef44837aa54f42a7a49b73a4d95a15"
            self.NbproductId = self.sysAttrs['config']['param']['productId']
            self.NbdeviceId = self.sysAttrs['config']['param']['deviceId']
        except Exception,e:
            self.debug(u'获取参数失败！'+e.message)

    def Collecting(self, dataId):
        try:
            cfgtmp = self.data2attrs[dataId]['config']
            # 过滤掉非采集点
            if cfgtmp["param"] == "":
                return ()

            # 过滤采集点
            if 'disabled' in cfgtmp and cfgtmp['disabled'] == True:
                return ()
            else:
                self.debug(self.name(dataId))

            #请求需要用的参数
            timearry = (datetime.datetime.now() + datetime.timedelta(days=-29)).timetuple()  # 当前时间减去29天后转化为timetuple的格式用于转换成timestamp格式
            begin_timestamp = str(int(time.mktime(timearry) * 1000) + offset)
            end_timestamp = str(int(time.time() * 1000) + offset)
            page_size = "20"
            page_timestamp = ""

            # 上传设备上传数据
            if 'private' in cfgtmp['param'] and cfgtmp['param']['private']=='show_data':

                body_HisInPage = '{"productId":"' + self.NbproductId + '","deviceId":"' + self.NbdeviceId + '","begin_timestamp":"' + begin_timestamp + '","end_timestamp":"' + end_timestamp + '","page_size":' + page_size + ',"page_timestamp":"' + page_timestamp + '"}'

                #http请求，拿去设备上报的数据
                res = getDeviceStatusHisInPage(self.Nbapplication, self.Nbkey, body_HisInPage)
                data = json.loads(res)['deviceStatusList']
                self.debug(data)

                #拿取两类数据并且按序拼接成字典
                data_dic = {}
                for i in data:
                    if 'terminal_type' in i:
                        data_dic.update(i)
                        break
                # self.debug(data_dic)
                self.debug(data_dic)
                #将字典类型的数据转换为元组
                data_list = []
                for key, value in data_dic.items():
                    #拿到时间戳数据时转化为时间
                    if key=='timestamp':
                        value=time.strftime("%Y-%m-%d %H:%M:%S",time.localtime(int(value) / 1000))

                    if type(value)==unicode:
                        #unicode转为str类型
                        value=value.encode('utf-8')
                    data_list.append(value)
                self.debug(data_list)
                return tuple(data_list)

            # 上传事件上报的数据,多种数据上报类型
            if 'private' in self.data2attrs[dataId]['config']['param'] and self.data2attrs[dataId]['config']['param']['private'].find('event'):

                body_event = '{"productId":"' + self.NbproductId + '","deviceId":"' + self.NbdeviceId + '","startTime":"' + begin_timestamp + '","endTime":"' + end_timestamp + '","pageSize":' + page_size + ',"page_timestamp":"' + page_timestamp + '"}'

                # 查询事件上报的数据
                event_res = QueryDeviceEventList(self.Nbapplication, self.Nbkey, self.NbMasterKey, body_event)
                event_data = json.loads(event_res)['result']['list']
                # self.debug(event_data)
                if self.data2attrs[dataId]['config']['param']['private'] == 'smoke_event':
                    event_list = []
                    for i in event_data:
                        print i['eventContent']
                        if 'smoke_state' in i['eventContent']:
                            for key, value in eval(i['eventContent']).items():
                                event_list.append(value)
                            event_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(int(i['createTime']) / 1000))
                            event_list.append(event_time)
                            self.debug(event_list)
                            break
                    return tuple(event_list)

                if self.data2attrs[dataId]['config']['param']['private'] == 'tamper_event':
                    event_list = []
                    for i in event_data:
                        print i['eventContent']
                        if 'tamper_alarm' in i['eventContent']:
                            for key, value in eval(i['eventContent']).items():
                                event_list.append(value)
                            event_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(int(i['createTime']) / 1000))
                            event_list.append(event_time)
                            self.debug(event_list)
                            break
                    #不上传重复的时间数据
                    return tuple(event_list)[1:]

            return ()

        except Exception ,e:
            self.debug(u'数据上传失败'+e.message)


    def Event_setData(self, dataId, value):
        return json.dumps({'code': 0, 'msg': '', 'data': ''})

• 驱动解析

• 编写环境为python2，首先先导入需要的依赖包

#coding=utf-8
import sys
sys.path.append("..")
from driver import *
import time
import datetime
from urllib import urlencode
import urllib2
import base64
import hmac
import json
from hashlib import sha1
reload(sys)
sys.setdefaultencoding('utf8')

• 定义api请求的签名算法和发送http请求的参数

#签名算法
def signature(key, application, timestamp, param, body):
    code = "application:" + application + "\n" + "timestamp:" + timestamp + "\n"
    for v in param:
        code += str(v[0]) + ":" + str(v[1]) + "\n"
    if (body is not None) and (body.strip()) :
        code += body + '\n'

    return base64.b64encode(hash_hmac(key, code, sha1))

#数据加密
def hash_hmac(key, code, sha1):
    hmac_code = hmac.new(key.encode(), code.encode(), sha1)
    print("hmac_code=" + str(hmac_code.hexdigest()))
    return hmac_code.digest()

#时间戳误差调整
def getTimeOffset(url):
    request = urllib2.Request(url)
    start = int(time.time() * 1000)
    response = urllib2.urlopen(request)
    end = int(time.time() * 1000)

    if response is not None:
        return int(int(response.headers['x-ag-timestamp']) - (end + start) / 2);
    else:
        return 0

baseUrl = 'https://ag-api.ctwing.cn'
timeUrl = 'https://ag-api.ctwing.cn/echo'
offset = getTimeOffset(timeUrl)

#发送http请求函数
def sendSDKRequest(path, head, param, body, version, application, MasterKey, key, method=None, isNeedSort=True,isNeedGetTimeOffset=False):
    paramList = []
    for key_value in param:
        paramList.append([key_value, param[key_value]])
    print("paramList=" + str(paramList))
    if (MasterKey is not None) and (MasterKey.strip()):
        paramList.append(['MasterKey', MasterKey])
    if isNeedSort:
        paramList = sorted(paramList)

    headers = {}
    if (MasterKey is not None) and (MasterKey.strip()):
        headers['MasterKey'] = MasterKey
    headers['application'] = application
    headers['Date'] = str(datetime.datetime.now())
    headers['version'] = version

    temp = dict(param.items())
    if (MasterKey is not None) and (MasterKey.strip()):
        temp['MasterKey'] = MasterKey

    url_params = urlencode(temp)

    url = baseUrl + path
    if (url_params is not None) and (url_params.strip()):
        url = url + '?' + url_params
    print("url=" + str(url))
    global offset
    if isNeedGetTimeOffset:
        offset = getTimeOffset(timeUrl)
    timestamp = str(int(time.time() * 1000) + offset)
    headers['timestamp'] = timestamp
    sign = signature(key, application, timestamp, paramList, body)
    headers['signature'] = sign

    headers.update(head)

    print("headers : %s" % (str(headers)))

    if (body is not None) and (body.strip()):
        request = urllib2.Request(url=url, headers=headers, data=body.encode('utf-8'))
    else:
        request = urllib2.Request(url=url, headers=headers)
    if (method is not None):
        request.get_method = lambda: method
    response = urllib2.urlopen(request)
    if ('response' in vars()):
        print("response.code: %d" % (response.code))
        return response
    else:
        return None

• 定义查询设备上传上来的数据以及上报的报警事件

#分页查询设备历史数据
def getDeviceStatusHisInPage(appKey, appSecret, body):
    path = '/aep_device_status/getDeviceStatusHisInPage'
    head = {}
    param = {}
    version = '20190928013337'
    application = appKey
    key = appSecret
    response = sendSDKRequest(path, head, param, body, version, application, None, key, 'POST')
    if response is not None:
        return response.read()
    return None

#查询事件上报
def QueryDeviceEventList(appKey, appSecret, MasterKey, body):
    path = '/aep_device_event/device/events'
    head = {}
    param = {}
    version = '20210327064751'
    application = appKey
    key = appSecret
    response = sendSDKRequest(path, head, param, body, version, application, MasterKey, key, 'POST')
    if response is not None:
        return response.read()
    return None

• 继承IOTOSDriverI这个类，对驱动进行初始化，获取中台设备实例中的参数，用于发送http请求使用 

class Project(IOTOSDriverI):
    def InitComm(self,attrs):
        self.setPauseCollect(False)
        self.setCollectingOneCircle(False)
        self.online(True)

        try:
            #获取中台配置的参数（必不可少）
            self.Nbapplication = self.sysAttrs['config']['param']['application']  # APPKEY
            self.Nbkey = self.sysAttrs['config']['param']['key']  # APPScret
            self.NbMasterKey=self.sysAttrs['config']['param']['MasterKey']  #MasterKey
            # self.NbMasterKey = "5fef44837aa54f42a7a49b73a4d95a15"
            self.NbproductId = self.sysAttrs['config']['param']['productId']
            self.NbdeviceId = self.sysAttrs['config']['param']['deviceId']
        except Exception,e:
            self.debug(u'获取参数失败！'+e.message)

• 采集函数，利用数据点的参数先排除非采集点，再利用设置的私有属性，当采集的数据点到含有私有属性的数据点时，进行相关变量的定义，并且查询设备上报的数据或者上报的报警信息，将其进行处理后以标准的格式输出，进行批量上传

    def Collecting(self, dataId):
        try:
            cfgtmp = self.data2attrs[dataId]['config']
            # 过滤掉非采集点
            if cfgtmp["param"] == "":
                return ()

            # 过滤采集点
            if 'disabled' in cfgtmp and cfgtmp['disabled'] == True:
                return ()
            else:
                self.debug(self.name(dataId))

            #请求需要用的参数
            timearry = (datetime.datetime.now() + datetime.timedelta(days=-29)).timetuple()  # 当前时间减去29天后转化为timetuple的格式用于转换成timestamp格式
            begin_timestamp = str(int(time.mktime(timearry) * 1000) + offset)
            end_timestamp = str(int(time.time() * 1000) + offset)
            page_size = "20"
            page_timestamp = ""

            # 上传设备上传数据
            if 'private' in cfgtmp['param'] and cfgtmp['param']['private']=='show_data':

                body_HisInPage = '{"productId":"' + self.NbproductId + '","deviceId":"' + self.NbdeviceId + '","begin_timestamp":"' + begin_timestamp + '","end_timestamp":"' + end_timestamp + '","page_size":' + page_size + ',"page_timestamp":"' + page_timestamp + '"}'

                #http请求，拿去设备上报的数据
                res = getDeviceStatusHisInPage(self.Nbapplication, self.Nbkey, body_HisInPage)
                data = json.loads(res)['deviceStatusList']
                self.debug(data)

                #拿取两类数据并且按序拼接成字典
                data_dic = {}
                for i in data:
                    if 'terminal_type' in i:
                        data_dic.update(i)
                        break
                # self.debug(data_dic)
                self.debug(data_dic)
                #将字典类型的数据转换为元组
                data_list = []
                for key, value in data_dic.items():
                    #拿到时间戳数据时转化为时间
                    if key=='timestamp':
                        value=time.strftime("%Y-%m-%d %H:%M:%S",time.localtime(int(value) / 1000))

                    if type(value)==unicode:
                        #unicode转为str类型
                        value=value.encode('utf-8')
                    data_list.append(value)
                self.debug(data_list)
                return tuple(data_list)

            # 上传事件上报的数据,多种数据上报类型
            if 'private' in self.data2attrs[dataId]['config']['param'] and self.data2attrs[dataId]['config']['param']['private'].find('event'):

                body_event = '{"productId":"' + self.NbproductId + '","deviceId":"' + self.NbdeviceId + '","startTime":"' + begin_timestamp + '","endTime":"' + end_timestamp + '","pageSize":' + page_size + ',"page_timestamp":"' + page_timestamp + '"}'

                # 查询事件上报的数据
                event_res = QueryDeviceEventList(self.Nbapplication, self.Nbkey, self.NbMasterKey, body_event)
                event_data = json.loads(event_res)['result']['list']
                # self.debug(event_data)
                if self.data2attrs[dataId]['config']['param']['private'] == 'smoke_event':
                    event_list = []
                    for i in event_data:
                        print i['eventContent']
                        if 'smoke_state' in i['eventContent']:
                            for key, value in eval(i['eventContent']).items():
                                event_list.append(value)
                            event_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(int(i['createTime']) / 1000))
                            event_list.append(event_time)
                            self.debug(event_list)
                            break
                    return tuple(event_list)

                if self.data2attrs[dataId]['config']['param']['private'] == 'tamper_event':
                    event_list = []
                    for i in event_data:
                        print i['eventContent']
                        if 'tamper_alarm' in i['eventContent']:
                            for key, value in eval(i['eventContent']).items():
                                event_list.append(value)
                            event_time = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime(int(i['createTime']) / 1000))
                            event_list.append(event_time)
                            self.debug(event_list)
                            break
                    #不上传重复的时间数据
                    return tuple(event_list)[1:]

            return ()

        except Exception ,e:
            self.debug(u'数据上传失败'+e.message)

 

​