消防栓数据接入Java

接入为拓普索尔 无线智能消防栓监测终端

厂家报文说明

sample_data说明 

    @Override
    public void channelRead(ChannelHandlerContext ctx, Object msg) {
        ByteBuf buf = (ByteBuf) msg;
        byte[] req = new byte[buf.readableBytes()];
        buf.readBytes(req);

        String strReq = Util.bytesToHexString(req);
        log.info("收到的请求是:" + strReq);
        log.info("收到请求字节长度是:" + req.length);

        log.info("header："+Util.convertHexToString(strReq.substring(0,8)));
        strReq = strReq.substring(8);
        log.info("type："+strReq.substring(0,2));
        strReq = strReq.substring(2);

        log.info("length：" +Integer.parseInt(strReq.substring(0,4),16));
        strReq = strReq.substring(4);

        log.info("device type：" +strReq.substring(0,2));
        strReq = strReq.substring(2);

        log.info("device id：" +Util.convertHexToString(strReq.substring(0,32)));
        strReq = strReq.substring(32);

        log.info("send_time yy ：" +strReq.substring(0,2));
        log.info("send_time mm ：" +strReq.substring(2,4));
        log.info("send_time dd ：" +strReq.substring(4,6));
        log.info("send_time hh ：" +strReq.substring(6,8));
        log.info("send_time mm ：" +strReq.substring(8,10));
        log.info("send_time ss：" +strReq.substring(10,12));
        strReq = strReq.substring(12);

        // 电池电量
        log.info("battery_level：" +Integer.parseInt(strReq.substring(0,2),16));
        strReq = strReq.substring(2);

        //信号强度
        log.info("signal_strength：" +Integer.parseInt(strReq.substring(0,2),16));
        strReq = strReq.substring(2);


        String dataHex = strReq.substring(0,8);
        log.info("sample_data：" +dataHex);
        Integer deviceType = Integer.parseInt(dataHex.substring(0,1),16);

        switch (deviceType){
            case 1:
                System.out.println("表示数据阈值下限告警");
                break;
            case 2:
                System.out.println("表示数据阈值上限");
                break;
            case 3:
                System.out.println("表示设备故障");
                break;
            case 4:
                System.out.println("表示数据动态变化阈值告警");
                break;
            case 5:
                System.out.println("表示碰撞告警");
                break;
            case 6:
                System.out.println("表示倾斜告警");
                break;
            case 7:
                System.out.println("表示水流告警");
                break;
            case 8:
                System.out.println("表示进水告警");
                break;
            case 9:
                System.out.println("表示低电量告警");
                break;
            default:
                break;
        }

        System.out.println("unit："+Util.convertHexToUnit(dataHex.substring(1,2)));


        Integer validBit = Integer.parseInt(dataHex.substring(2,3));
        System.out.println("有效位数："+ validBit);

        BigDecimal value = new BigDecimal(Math.pow(10,-validBit) * Integer.parseInt(dataHex.substring(3,8))).setScale(4, BigDecimal.ROUND_DOWN);
        System.out.println("value："+ value);


        strReq = strReq.substring(8);
        log.info("crc16：" +strReq.substring(0,4));
        strReq = strReq.substring(4);

        log.info("iot：" +strReq.substring(0,6));

        buf.clear();
    }

    /**
     * 单位转换
     * @param hex
     * @return
     */
    public static String convertHexToUnit(String hex){
        Integer hexInt = Integer.parseInt(hex,16);
        switch (hexInt){
            case 1:
                return "MPa";
            case 2:
                return "Bar";
            case 3:
                return "KPa";
            case 4:
                return "M";
            case 5:
                return "℃";
            case 6:
                return "m³/h";
            case 7:
                return "°";
            default:
                break;

        }
        return "";
    }

    /**
     * hex to ascii
     * @param hex
     * @return
     */
    public static String convertHexToString(String hex){
        StringBuilder sb = new StringBuilder();
        StringBuilder temp = new StringBuilder();
        for( int i=0; i