Postpartum recovery to the recovery center or yoga recovery

1. Do not do yoga is good, or the treatment of postpartum rehabilitation, or do yoga better, if there is no pathological problems.

2. In fact, it is recommended that you practice yoga ring pregnancy and postpartum. Practicing yoga ring pregnancy can help relieve the discomfort of pregnant mother ring pregnancy (low back pain, pubic symphysis pain, poor breathing, etc.)
secondly, it can help the baby to establish more space, contribute to the baby's health, and also help correct the malposition of the fetus and the umbilical cord around the neck
moreover, it has a good effect on the postpartum recovery of pregnant mothers. It is suggested to find a professional yoga teacher to practice. Don't practice at home. It's not safe
and yoga postpartum exercise can enhance the strength of pelvic floor muscle, improve leakage of urine, urinary incontinence, disharmony between husband and wife, speed up the recovery of abdominal muscles, promote abdominal organs to the right position, rece the belly, relax the belly, shape, lose weight and so on.

3. < UL >

restore a slim figure: improve blood circulation, restore skin tension and rece fat accumulation, so as to achieve the goal of slimming. Because of postpartum joint tissue relaxation, so follow the guidance of professional yoga teacher, in order to avoid sports injury

improve bad posture: pregnant women are prone to bad posture e to physiological changes, such as forward shift of body center of gravity, cervical lordosis, forward pull of shoulder splint, forward tilt of pelvis, shift of center of gravity to heel, etc. And postpartum again because of holding the baby so that the center of gravity forward. So it is easy to cause postpartum neck, back, pelvis and heel pain.

strengthen arm muscle strength: after the baby is born, the work of bathing and holding the baby is completed by the strength of both hands and arms

reconstruction of abdominal and pelvic floor muscle tension: after birth, abdominal muscle tissue relaxes and the tension becomes weak. Yoga training can strengthen the recovery, strengthen the abdominal and pelvic muscles, enhance the support strength of pelvic organs, and prevent the occurrence of compressive urinary incontinence

improve the signs of foot edema: ring pregnancy, e to fetal compression of inferior vena cava, leg edema occurs, and even cause varicose veins of lower limbs

strengthen physical recovery: e to the physical decline of pregnant women ring pregnancy, they often feel weak and depressed after delivery. Doctors and experts say yoga is a great help to the recovery of postpartum physical fitness

4. The English name of CRC is cyclic rendancy check. It uses the principle of division and remainder to do error detection. In practical application, the sending device calculates the CRC value and sends it to the receiving device together with the data. The receiving device recalculates the CRC of the received data and compares it with the received CRC. If the two CRC values are different, it indicates that there is an error in data communication.

5. 本文讲述无线网和以太网mac地址获取的方法： 1.以太网获取mac地址 因为机顶盒系统是linux内核的，假设ethernet是eth0，那么可以从以下文件中读取相关信息：/sys/class/net/eth0/address方法1： public static String loadFileAsString(String filePath) throws java.io.IOException{ StringBuffer fileData = new StringBuffer(1000); BufferedReader reader = new BufferedReader(new FileReader(filePath)); char[] buf = new char[1024]; int numRead=0; while((numRead=reader.read(buf)) != -1){ String readData = String.valueOf(buf, 0, numRead); fileData.append(readData); } reader.close(); return fileData.toString();}/** Get the STB MacAddress*/public String getMacAddress(){ try { return loadFileAsString("/sys/class/net/eth0/address") .toUpperCase().substring(0, 17); } catch (IOException e) { e.printStackTrace(); return null; }}方法2：NetworkInterface NIC = NetworkInterface.getByName("eth0"); byte[] buf = NIC.getHardwareAddress(); for (int i = 0; i < buf.length; i++) { mac = mac + byteHEX(buf);}if (mac != null && !"".equals(mac)) { }2.wifi获取mac和ip首先要在manifest.xml文件中添加权限： <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"></uses-permission>获取mac的代码如下WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE); WifiInfo info = wifi.getConnectionInfo(); return info.getMacAddress();获取Ip的代码public String getLocalIpAddress() { try { for (Enumeration<NetworkInterface> en = NetworkInterface .getNetworkInterfaces(); en.hasMoreElements();) { NetworkInterface intf = en.nextElement(); if (intf.getName().toLowerCase().equals("eth0")) { for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) { InetAddress inetAddress = enumIpAddr.nextElement(); if (!inetAddress.isLoopbackAddress()) { String ipaddress = inetAddress.getHostAddress().toString(); if(!ipaddress.contains("::")){//ipV6的地址 return ipaddress; } } } } else { continue; } } } catch (Exception ex) { Log.e("WifiPreference IpAddress", ex.toString()); } return null; }

6. We often hear various Ethernet frame terms in the test, such as CRC, alignment, fragment, runt, oversize, jabber, jumbo, etc. Many beginners are not clear about these concepts. I would like to summarize these terms here. First introce some basic concepts, and then introce the mistakes
2 basic concept of Ethernet frame
Ethernet mainly has two frame structures: Ethernet II frame and IEEE 802.3 frame:
preamble
s
o
F
destination
adress
source
adress
type
&; Lengh
Data
F
C
s
preamble: a 7-byte alternate of 0 and 1, which informs the destination to receive the
sof: frame initialization character, which ends with two consecutive codes 1 and identifies the beginning of a frame
destination address & source address: destination MAC address & # 92; The source MAC address can be unicast, multicast or broadcast address< br />Type\ Length: type indicates the length of data field type; Length indicates the number of bytes of the data segment immediately following. The value distinguishes between Ethernet II frame and IEEE 802.3 frame
greater than 1500: the frame with value greater than 1500 in type field is Ethernet II frame, and the minimum value in this field is 1536 (600 hex)
less than or equal to 1500: the frame with the value less than or equal to 1500 in the length domain is IEEE 802.3 frame, and the maximum value in this domain is 1500
data: data segment. The maximum value of byte transmission in Ethernet is 1518 bytes (jumbo is not enabled), and the minimum value is 64 bytes. The number of bytes in the packet must be divisible by 8
FCS: frame check. The sequence is a 4-byte cyclic rendancy check (CRC). The sender generates the CRC according to a certain calculation method, and the receiver calculates the received data in the same way, and compares the obtained check code with the received check code, if it is agreed that the transmission is correct
jumbo frame: with the improvement of Ethernet speed and the emergence of Gigabit Ethernet, jumbo frame is proposed. It is also called mega frame, that is, the frame with more than 1518 bytes; RSEA, MSEB\ Msea has the configuration option to support jumbo frame. The maximum frame length of mseb board can reach 64kbyte (only 9600byte)

7.

Mitsubishi PLC communication mode is applied in the current technical field, including parallel communication and simplex communication. Generally, it will not be applied in the same area at the same time. The specific introction of parallel communication, parallel communication and parallel communication is as follows:

1, serial communication

serial communication is one of the computer communication modes, It mainly plays the role of data transmission between the host and peripherals and between the host. The serial communication has the characteristics of less transmission lines and low cost. It is mainly suitable for short-range man-machine exchange, real-time monitoring and other system communication work. With the help of the existing telephone network, it can also achieve long-distance transmission. Therefore, the serial communication interface is a common interface in the computer system

2, simplex communication

simplex communication channel is one-way channel, the identity of sender and receiver is fixed, the sender can only send information, not receive information; The receiver can only receive information, not send information. The data signal is only transmitted from one end to the other, that is, the information flow is unidirectional

extended data:

Mitsubishi PLC communication system general design method:

1. Analyze the control requirements of the control system

be familiar with the process requirements of the controlled object, determine the actions that must be completed and the sequence of action completion, and summarize the sequence function diagram

According to the proction process requirements, the I / O points and the type of I / O points (digital quantity, analog quantity, etc.) are determined, and the list of I / O points is listed. The memory capacity is estimated with appropriate margin. According to the experience, for the general switch control system, the memory capacity required by the user program is equal to the total number of I / O multiplied by 8. For the control system with only analog input, each analog input needs 100 memory words

3, hardware design

according to the selected PLC procts, understand its performance. According to the random information, combined with the actual needs, and considering the software programming, the external circuit is designed, and the principle wiring diagram of the electrical control system is drawn

Software design the main task of software design is to convert the sequence function diagram into ladder diagram according to the requirements of control system. It is better to list the used software components (such as internal relay, timer, counter, etc.) in the programming to indicate the purpose, so as to facilitate the programming, debugging, system operation, maintenance and overhaul

simulation debugging. Download the designed program to the PLC main unit. Test signal is added by external signal source, input signal can be simulated by button or small switch, load can be simulated by indicator light, program operation can be understood by light and dark of various indicator lights, change relationship between input / output and whether logic state meets design requirements can be observed, and program can be modified and adjusted in time until design requirements are met

source of reference: network Mitsubishi PLC

8. I think it's 48 times of 2, but maybe because one of them has a special purpose, it can only proce 47 times of 2