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1# Sensor组件<a name="ZH-CN_TOPIC_0000001148682248"></a>
2
3-   [简介](#section11660541593)
4-   [目录](#section44981327519)
5-   [使用](#section1581412211528)
6-   [相关仓](#section96071132185310)
7
8## 简介<a name="section11660541593"></a>
9sensors_start仓归属于[泛sensor服务子系统](https://gitee.com/openharmony/docs/blob/master/zh-cn/readme/%E6%B3%9BSensor%E5%AD%90%E7%B3%BB%E7%BB%9F.md)，该仓主要提供了泛sensor服务进程（即sensors）的启动文件。<br>
10
11## 目录<a name="section44981327519"></a>
12
13sensors_start仓的目录结构如下：
14
15```
16/base/sensors/start
17├── etc
18    └── init                # 放置sensors进程的启动文件
19```
20
21## 使用<a name="section1581412211528"></a>
22泛sensor服务子系统提供了sensor服务和miscdevice服务，分别在[sensors\_sensor](https://gitee.com/openharmony/sensors_sensor)和[sensors\_miscdevice](https://gitee.com/openharmony/sensors_miscdevice)部件仓。产品根据需要可能选择其中一个服务或者两个服务都选择。因此将sensors进程的启动文件单独放置在sensors_start仓，由这两个服务共享，这样任何一个服务搭配启动部件就可以启动sensors进程，防止重复启动进程。<br>
23sensor服务和miscdevice服务的启动配置文件分别在[sensors\_sensor](https://gitee.com/openharmony/sensors_sensor)和[sensors\_miscdevice](https://gitee.com/openharmony/sensors_miscdevice)仓中sa_profile目录下，编译后生成sensors.xml文件，内容如下所示：
24```
25<?xml version="1.0" encoding="utf-8"?>
26<info>
27    <process>sensors</process>
28    <loadlibs>
29        <libpath>libmiscdevice_service.z.so</libpath>
30        <libpath>libsensor_service.z.so</libpath>
31    </loadlibs>
32    <systemability>
33        <name>3602</name>
34        <libpath>libmiscdevice_service.z.so</libpath>
35        <run-on-create>true</run-on-create>
36        <distributed>false</distributed>
37        <dump-level>1</dump-level>
38    </systemability>
39    <systemability>
40        <name>3601</name>
41        <libpath>libsensor_service.z.so</libpath>
42        <run-on-create>true</run-on-create>
43        <distributed>false</distributed>
44        <dump-level>1</dump-level>
45    </systemability>
46</info>
47```
48其中3601和3602分别为sensor服务和马达服务。若仅编译[sensors\_sensor](https://gitee.com/openharmony/sensors_sensor)仓代码，sensors.xml文件中则仅包含3601服务的配置项。启动sensors进程时会加载sensors.xml文件启动对应的服务。
49
50## 相关仓<a name="section96071132185310"></a>
51
52[泛sensor服务子系统](https://gitee.com/openharmony/docs/blob/master/zh-cn/readme/%E6%B3%9BSensor%E5%AD%90%E7%B3%BB%E7%BB%9F.md)
53
54[sensors\_sensor](https://gitee.com/openharmony/sensors_sensor)
55
56[sensors\_miscdevice](https://gitee.com/openharmony/sensors_miscdevice)
57
58**sensors\_start**
59
60