<?xml version="1.0" encoding="UTF-8"?>
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/*
  Copyright (c) 2011+, HL7, Inc.
  All rights reserved.
  
  Redistribution and use in source and binary forms, with or without modification, 
  are permitted provided that the following conditions are met:
  
   * Redistributions of source code must retain the above copyright notice, this 
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     this list of conditions and the following disclaimer in the documentation 
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     endorse or promote products derived from this software without specific 
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  Generated on Tue, Jun 16, 2026 19:54+0000 for FHIR v6.0.0-ballot4 

  Note: the schemas &amp; schematrons do not contain all of the rules about what makes resources
  valid. Implementers will still need to be familiar with the content of the specification and with
  any profiles that apply to the resources in order to make a conformant implementation.

-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://hl7.org/fhir" xmlns:xhtml="http://www.w3.org/1999/xhtml" targetNamespace="http://hl7.org/fhir" elementFormDefault="qualified" version="1.0">
  <xs:include schemaLocation="fhir-base.xsd"/>
  <xs:element name="DeviceMetric" type="DeviceMetric">
    <xs:annotation>
      <xs:documentation xml:lang="en">Describes a measurement, calculation or setting capability of a device.</xs:documentation>
    </xs:annotation>
  </xs:element>
  <xs:complexType name="DeviceMetric">
    <xs:annotation>
      <xs:documentation xml:lang="en">Describes a measurement, calculation or setting capability of a device.</xs:documentation>
      <xs:documentation xml:lang="en">If the element is present, it must have either a @value, an @id, or extensions</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="DomainResource">
        <xs:sequence>
          <xs:element name="identifier" minOccurs="0" maxOccurs="unbounded" type="Identifier">
            <xs:annotation>
              <xs:documentation xml:lang="en">Instance identifiers assigned to a device, by the device or gateway software, manufacturers, other organizations or owners. For example, handle ID.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="status" minOccurs="1" maxOccurs="1" type="DeviceMetricStatus">
            <xs:annotation>
              <xs:documentation xml:lang="en">Indicates current state of the record.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="operationalStatus" minOccurs="0" maxOccurs="1" type="DeviceMetricOperationalStatus">
            <xs:annotation>
              <xs:documentation xml:lang="en">Indicates current operational state of the device. For example: On, Off, Standby, etc.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="category" minOccurs="1" maxOccurs="1" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">Indicates the category of the observation generation process. A DeviceMetric can be, for example, a setting, measurement, or calculation.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="type" minOccurs="1" maxOccurs="1" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">Describes the type of the metric. For example: Heart Rate, PEEP Setting, etc.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="device" minOccurs="1" maxOccurs="1" type="Reference">
            <xs:annotation>
              <xs:documentation xml:lang="en">The device to which this DeviceMetric applies. The referenced device could be a top-level device or a component of a device.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="unit" minOccurs="0" maxOccurs="1" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">Describes the unit that an observed value determined for this metric will have. For example: Percent, Seconds, etc.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="color" minOccurs="0" maxOccurs="1" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">The preferred color associated with the metric (e.g., display color). This is often used to aid clinicians to track and identify parameter types by color. In practice, consider a Patient Monitor that has ECG/HR and Pleth; the metrics are displayed in different characteristic colors, such as HR in blue, BP in green, and PR and SpO2 in magenta.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="measurementFrequency" minOccurs="0" maxOccurs="1" type="Quantity">
            <xs:annotation>
              <xs:documentation xml:lang="en">The frequency at which the metric is taken or recorded. Devices measure metrics at a wide range of frequencies; for example, an ECG might sample measurements in the millisecond range, while an NIBP might trigger only once an hour. Less often, the measurementFrequency is based on a unit other than time, such as distance (e.g., for a measuring wheel). The update period could be different than the measurement frequency, if the device does not update the published observed value with the same frequency as it was measured.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="availability" minOccurs="0" maxOccurs="1" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">Indicates whether the metric is derived (measured) by a continuous means or by an intermittent means.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="calibration" type="DeviceMetric.Calibration" minOccurs="0" maxOccurs="unbounded">
            <xs:annotation>
              <xs:documentation xml:lang="en">Describes the calibrations that have been performed or that are required to be performed.</xs:documentation>
           </xs:annotation>
          </xs:element>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:complexType name="DeviceMetric.Calibration">
    <xs:annotation>
      <xs:documentation xml:lang="en">Describes a measurement, calculation or setting capability of a device.</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="BackboneElement">
        <xs:sequence>
          <xs:element name="type" minOccurs="0" maxOccurs="1" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">Describes the type of the calibration method.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="state" minOccurs="0" maxOccurs="1" type="CodeableConcept">
            <xs:annotation>
              <xs:documentation xml:lang="en">Describes the state of the calibration.</xs:documentation>
           </xs:annotation>
          </xs:element>
          <xs:element name="time" minOccurs="0" maxOccurs="1" type="instant">
            <xs:annotation>
              <xs:documentation xml:lang="en">Describes the time last calibration has been performed.</xs:documentation>
           </xs:annotation>
          </xs:element>
        </xs:sequence>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:simpleType name="DeviceMetricOperationalStatusEnum">
    <xs:restriction base="code-primitive">
      <xs:enumeration value="on">
        <xs:annotation>
          <xs:documentation xml:lang="en">On</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="off">
        <xs:annotation>
          <xs:documentation xml:lang="en">Off</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="standby">
        <xs:annotation>
          <xs:documentation xml:lang="en">Standby</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="unknown">
        <xs:annotation>
          <xs:documentation xml:lang="en">Unknown</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
    </xs:restriction>
  </xs:simpleType>
  <xs:complexType name="DeviceMetricOperationalStatus">
    <xs:annotation>
      <xs:documentation xml:lang="en"></xs:documentation>
      <xs:documentation xml:lang="en">If the element is present, it must have either a @value, an @id, or extensions</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="Element">
        <xs:attribute name="value" type="DeviceMetricOperationalStatusEnum" use="optional"/>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
  <xs:simpleType name="DeviceMetricStatusEnum">
    <xs:restriction base="code-primitive">
      <xs:enumeration value="active">
        <xs:annotation>
          <xs:documentation xml:lang="en">Active</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="inactive">
        <xs:annotation>
          <xs:documentation xml:lang="en">Inactive</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="entered-in-error">
        <xs:annotation>
          <xs:documentation xml:lang="en">Entered in Error</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
      <xs:enumeration value="unknown">
        <xs:annotation>
          <xs:documentation xml:lang="en">Unknown</xs:documentation>
        </xs:annotation>
      </xs:enumeration>
    </xs:restriction>
  </xs:simpleType>
  <xs:complexType name="DeviceMetricStatus">
    <xs:annotation>
      <xs:documentation xml:lang="en"></xs:documentation>
      <xs:documentation xml:lang="en">If the element is present, it must have either a @value, an @id, or extensions</xs:documentation>
    </xs:annotation>
    <xs:complexContent>
      <xs:extension base="Element">
        <xs:attribute name="value" type="DeviceMetricStatusEnum" use="optional"/>
      </xs:extension>
    </xs:complexContent>
  </xs:complexType>
</xs:schema>
