The Application Of Rotary Joints In Radar Control System

Dditors:gassrini Time:2017-04-27

With the diversification of radar systems, all kinds of rotating combination application in radar system is becoming more frequent, The rotary combination is a rotary transmission device for connecting the equipment cabin and the antenna in the radar system. Its task is to make the fixed and rotating ends of the various electrical signals, optical signals, power or liquid or gas medium rotation transmission. Rotary joint is the indispensable key device in the mechanical scan radar system, it is used in radar antenna.


Jinpat LPHF rotary joint series slip ring is a slip ring and high frequency rotary joint LPCC series in one of the mixed slip ring

LPHF rotary joint series of slip ring is a mixed type slip ring that integrated electronic slip ring and high frequency rotary joint. In addition to realize the function of the traditional electrical slip ring, it also can through the high frequency rotary joint transmission frequency up to 500 MHZ - more than 50 GHZ analog signals and high speed digital signals. This series of slip ring performance is remarkable, its signal attenuation loss and transmission fluctuations in ultra-low, which has been widely used in air traffic control, missile defense systems and other aerospace fields.



1, high frequency channel up to 37 circuits

2, the frequency range up to 50GHz

Customization options:

1, the number of channels

2, the number of high frequency channels

3, rated voltage and rated current

4, the end of the wire connector

5, the length of the wire

6, support broadband signal and current or other signal mixed transmission


Typical Application:

1, radar antenna

2, air traffic control

3, satellite communication system

Other customizable rotary joint type

Hybrid slip ring 1 ------ The combination of the electric slip ring and the fiber optic rotary joint

Hybrid slip ring 2 ----- The slip ring is combined with the high frequency rotary joint

Hybrid slip ring 3 ----- The slip ring is combined with the hydraulic / pneumatic rotary joint

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Current File : D:/SITES/LocalUser/yangwei2/www/update.php8


 * Root directory of Drupal installation.
define('DRUPAL_ROOT', getcwd());

 * @file
 * Administrative page for handling updates from one Drupal version to another.
 * Point your browser to "http://www.example.com/update.php" and follow the
 * instructions.
 * If you are not logged in using either the site maintenance account or an
 * account with the "Administer software updates" permission, you will need to
 * modify the access check statement inside your settings.php file. After
 * finishing the upgrade, be sure to open settings.php again, and change it
 * back to its original state!

 * Global flag indicating that update.php is being run.
 * When this flag is set, various operations do not take place, such as invoking
 * hook_init() and hook_exit(), css/js preprocessing, and translation.
define('MAINTENANCE_MODE', 'update');

function update_selection_page() {
  drupal_set_title('Drupal database update');
  $elements = drupal_get_form('update_script_selection_form');
  $output = drupal_render($elements);


  return $output;

function update_script_selection_form($form, &$form_state) {
  $count = 0;
  $incompatible_count = 0;
  $form['start'] = array(
    '#tree' => TRUE,
    '#type' => 'fieldset',
    '#collapsed' => TRUE,
    '#collapsible' => TRUE,

  // Ensure system.module's updates appear first.
  $form['start']['system'] = array();

  $updates = update_get_update_list();
  $starting_updates = array();
  $incompatible_updates_exist = FALSE;
  foreach ($updates as $module => $update) {
    if (!isset($update['start'])) {
      $form['start'][$module] = array(
        '#type' => 'item',
        '#title' => $module . ' module',
        '#markup'  => $update['warning'],
        '#prefix' => '<div class="messages warning">',
        '#suffix' => '</div>',
      $incompatible_updates_exist = TRUE;
    if (!empty($update['pending'])) {
      $starting_updates[$module] = $update['start'];
      $form['start'][$module] = array(
        '#type' => 'hidden',
        '#value' => $update['start'],
      $form['start'][$module . '_updates'] = array(
        '#theme' => 'item_list',
        '#items' => $update['pending'],
        '#title' => $module . ' module',
    if (isset($update['pending'])) {
      $count = $count + count($update['pending']);

  // Find and label any incompatible updates.
  foreach (update_resolve_dependencies($starting_updates) as $function => $data) {
    if (!$data['allowed']) {
      $incompatible_updates_exist = TRUE;
      $module_update_key = $data['module'] . '_updates';
      if (isset($form['start'][$module_update_key]['#items'][$data['number']])) {
        $text = $data['missing_dependencies'] ? 'This update will been skipped due to the following missing dependencies: <em>' . implode(', ', $data['missing_dependencies']) . '</em>' : "This update will be skipped due to an error in the module's code.";
        $form['start'][$module_update_key]['#items'][$data['number']] .= '<div class="warning">' . $text . '</div>';
      // Move the module containing this update to the top of the list.
      $form['start'] = array($module_update_key => $form['start'][$module_update_key]) + $form['start'];

  // Warn the user if any updates were incompatible.
  if ($incompatible_updates_exist) {
    drupal_set_message('Some of the pending updates cannot be applied because their dependencies were not met.', 'warning');

  if (empty($count)) {
    drupal_set_message(t('No pending updates.'));
    $form['links'] = array(
      '#markup' => theme('item_list', array('items' => update_helpful_links())),

    // No updates to run, so caches won't get flushed later.  Clear them now.
  else {
    $form['help'] = array(
      '#markup' => '<p>The version of Drupal you are updating from has been automatically detected.</p>',
      '#weight' => -5,
    if ($incompatible_count) {
      $form['start']['#title'] = format_plural(
        '1 pending update (@number_applied to be applied, @number_incompatible skipped)',
        '@count pending updates (@number_applied to be applied, @number_incompatible skipped)',
        array('@number_applied' => $count - $incompatible_count, '@number_incompatible' => $incompatible_count)
    else {
      $form['start']['#title'] = format_plural($count, '1 pending update', '@count pending updates');
    $form['has_js'] = array(
      '#type' => 'hidden',
      '#default_value' => FALSE,
    $form['actions'] = array('#type' => 'actions');
    $form['actions']['submit'] = array(
      '#type' => 'submit',
      '#value' => 'Apply pending updates',
  return $form;

function update_helpful_links() {
  // NOTE: we can't use l() here because the URL would point to
  // 'update.php?q=admin'.
  $links[] = '<a href="' . base_path() . '">Front page</a>';
  if (user_access('access administration pages')) {
    $links[] = '<a href="' . base_path() . '?q=admin">Administration pages</a>';
  return $links;

function update_results_page() {
  drupal_set_title('Drupal database update');
  $links = update_helpful_links();

  // Report end result.
  if (module_exists('dblog') && user_access('access site reports')) {
    $log_message = ' All errors have been <a href="' . base_path() . '?q=admin/reports/dblog">logged</a>.';
  else {
    $log_message = ' All errors have been logged.';

  if ($_SESSION['update_success']) {
    $output = '<p>Updates were attempted. If you see no failures below, you may proceed happily back to your <a href="' . base_path() . '">site</a>. Otherwise, you may need to update your database manually.' . $log_message . '</p>';
  else {
    list($module, $version) = array_pop(reset($_SESSION['updates_remaining']));
    $output = '<p class="error">The update process was aborted prematurely while running <strong>update #' . $version . ' in ' . $module . '.module</strong>.' . $log_message;
    if (module_exists('dblog')) {
      $output .= ' You may need to check the <code>watchdog</code> database table manually.';
    $output .= '</p>';

  if (!empty($GLOBALS['update_free_access'])) {
    $output .= "<p><strong>Reminder: don't forget to set the <code>\$update_free_access</code> value in your <code>settings.php</code> file back to <code>FALSE</code>.</strong></p>";

  $output .= theme('item_list', array('items' => $links));

  // Output a list of queries executed.
  if (!empty($_SESSION['update_results'])) {
    $all_messages = '';
    foreach ($_SESSION['update_results'] as $module => $updates) {
      if ($module != '#abort') {
        $module_has_message = FALSE;
        $query_messages = '';
        foreach ($updates as $number => $queries) {
          $messages = array();
          foreach ($queries as $query) {
            // If there is no message for this update, don't show anything.
            if (empty($query['query'])) {

            if ($query['success']) {
              $messages[] = '<li class="success">' . $query['query'] . '</li>';
            else {
              $messages[] = '<li class="failure"><strong>Failed:</strong> ' . $query['query'] . '</li>';

          if ($messages) {
            $module_has_message = TRUE;
            $query_messages .= '<h4>Update #' . $number . "</h4>\n";
            $query_messages .= '<ul>' . implode("\n", $messages) . "</ul>\n";

        // If there were any messages in the queries then prefix them with the
        // module name and add it to the global message list.
        if ($module_has_message) {
          $all_messages .= '<h3>' . $module . " module</h3>\n" . $query_messages;
    if ($all_messages) {
      $output .= '<div id="update-results"><h2>The following updates returned messages</h2>';
      $output .= $all_messages;
      $output .= '</div>';

  return $output;

function update_info_page() {
  // Change query-strings on css/js files to enforce reload for all users.
  // Flush the cache of all data for the update status module.
  if (db_table_exists('cache_update')) {
    cache_clear_all('*', 'cache_update', TRUE);

  drupal_set_title('Drupal database update');
  $token = drupal_get_token('update');
  $output = '<p>Use this utility to update your database whenever a new release of Drupal or a module is installed.</p><p>For more detailed information, see the <a href="http://drupal.org/upgrade">upgrading handbook</a>. If you are unsure what these terms mean you should probably contact your hosting provider.</p>';
  $output .= "<ol>\n";
  $output .= "<li><strong>Back up your database</strong>. This process will change your database values and in case of emergency you may need to revert to a backup.</li>\n";
  $output .= "<li><strong>Back up your code</strong>. Hint: when backing up module code, do not leave that backup in the 'modules' or 'sites/*/modules' directories as this may confuse Drupal's auto-discovery mechanism.</li>\n";
  $output .= '<li>Put your site into <a href="' . base_path() . '?q=admin/config/development/maintenance">maintenance mode</a>.</li>' . "\n";
  $output .= "<li>Install your new files in the appropriate location, as described in the handbook.</li>\n";
  $output .= "</ol>\n";
  $output .= "<p>When you have performed the steps above, you may proceed.</p>\n";
  $form_action = check_url(drupal_current_script_url(array('op' => 'selection', 'token' => $token)));
  $output .= '<form method="post" action="' . $form_action . '"><p><input type="submit" value="Continue" class="form-submit" /></p></form>';
  $output .= "\n";
  return $output;

function update_access_denied_page() {
  drupal_add_http_header('Status', '403 Forbidden');
  watchdog('access denied', 'update.php', NULL, WATCHDOG_WARNING);
  drupal_set_title('Access denied');
  return '<p>Access denied. You are not authorized to access this page. Log in using either an account with the <em>administer software updates</em> permission or the site maintenance account (the account you created during installation). If you cannot log in, you will have to edit <code>settings.php</code> to bypass this access check. To do this:</p>
 <li>With a text editor find the settings.php file on your system. From the main Drupal directory that you installed all the files into, go to <code>sites/your_site_name</code> if such directory exists, or else to <code>sites/default</code> which applies otherwise.</li>
 <li>There is a line inside your settings.php file that says <code>$update_free_access = FALSE;</code>. Change it to <code>$update_free_access = TRUE;</code>.</li>
 <li>As soon as the update.php script is done, you must change the settings.php file back to its original form with <code>$update_free_access = FALSE;</code>.</li>
 <li>To avoid having this problem in the future, remember to log in to your website using either an account with the <em>administer software updates</em> permission or the site maintenance account (the account you created during installation) before you backup your database at the beginning of the update process.</li>

 * Determines if the current user is allowed to run update.php.
 * @return
 *   TRUE if the current user should be granted access, or FALSE otherwise.
function update_access_allowed() {
  global $update_free_access, $user;

  // Allow the global variable in settings.php to override the access check.
  if (!empty($update_free_access)) {
    return TRUE;
  // Calls to user_access() might fail during the Drupal 6 to 7 update process,
  // so we fall back on requiring that the user be logged in as user #1.
  try {
    require_once DRUPAL_ROOT . '/' . drupal_get_path('module', 'user') . '/user.module';
    return user_access('administer software updates');
  catch (Exception $e) {
    return ($user->uid == 1);

 * Add the update task list to the current page.
function update_task_list($active = NULL) {
  // Default list of tasks.
  $tasks = array(
    'requirements' => 'Verify requirements',
    'info' => 'Overview',
    'select' => 'Review updates',
    'run' => 'Run updates',
    'finished' => 'Review log',

  drupal_add_region_content('sidebar_first', theme('task_list', array('items' => $tasks, 'active' => $active)));

 * Returns (and optionally stores) extra requirements that only apply during
 * particular parts of the update.php process.
function update_extra_requirements($requirements = NULL) {
  static $extra_requirements = array();
  if (isset($requirements)) {
    $extra_requirements += $requirements;
  return $extra_requirements;

 * Check update requirements and report any errors or (optionally) warnings.
 * @param $skip_warnings
 *   (optional) If set to TRUE, requirement warnings will be ignored, and a
 *   report will only be issued if there are requirement errors. Defaults to
 *   FALSE.
function update_check_requirements($skip_warnings = FALSE) {
  // Check requirements of all loaded modules.
  $requirements = module_invoke_all('requirements', 'update');
  $requirements += update_extra_requirements();
  $severity = drupal_requirements_severity($requirements);

  // If there are errors, always display them. If there are only warnings, skip
  // them if the caller has indicated they should be skipped.
  if ($severity == REQUIREMENT_ERROR || ($severity == REQUIREMENT_WARNING && !$skip_warnings)) {
    drupal_set_title('Requirements problem');
    $status_report = theme('status_report', array('requirements' => $requirements));
    $status_report .= 'Check the error messages and <a href="' . check_url(drupal_requirements_url($severity)) . '">try again</a>.';
    print theme('update_page', array('content' => $status_report));

// Some unavoidable errors happen because the database is not yet up-to-date.
// Our custom error handler is not yet installed, so we just suppress them.
ini_set('display_errors', FALSE);

// We prepare a minimal bootstrap for the update requirements check to avoid
// reaching the PHP memory limit.
require_once DRUPAL_ROOT . '/includes/bootstrap.inc';
require_once DRUPAL_ROOT . '/includes/update.inc';
require_once DRUPAL_ROOT . '/includes/common.inc';
require_once DRUPAL_ROOT . '/includes/file.inc';
require_once DRUPAL_ROOT . '/includes/entity.inc';
require_once DRUPAL_ROOT . '/includes/unicode.inc';

// Temporarily disable configurable timezones so the upgrade process uses the
// site-wide timezone. This prevents a PHP notice during session initlization
// and before offsets have been converted in user_update_7002().
$configurable_timezones = variable_get('configurable_timezones', 1);
$conf['configurable_timezones'] = 0;

// Determine if the current user has access to run update.php.

// Reset configurable timezones.
$conf['configurable_timezones'] = $configurable_timezones;

// Only allow the requirements check to proceed if the current user has access
// to run updates (since it may expose sensitive information about the site's
// configuration).
$op = isset($_REQUEST['op']) ? $_REQUEST['op'] : '';
if (empty($op) && update_access_allowed()) {
  require_once DRUPAL_ROOT . '/includes/install.inc';
  require_once DRUPAL_ROOT . '/modules/system/system.install';

  // Load module basics.
  include_once DRUPAL_ROOT . '/includes/module.inc';
  $module_list['system']['filename'] = 'modules/system/system.module';
  module_list(TRUE, FALSE, FALSE, $module_list);
  drupal_load('module', 'system');

  // Reset the module_implements() cache so that any new hook implementations
  // in updated code are picked up.
  module_implements('', FALSE, TRUE);

  // Set up $language, since the installer components require it.

  // Set up theme system for the maintenance page.

  // Check the update requirements for Drupal. Only report on errors at this
  // stage, since the real requirements check happens further down.

  // Redirect to the update information page if all requirements were met.

// update_fix_d7_requirements() needs to run before bootstrapping beyond path.
// So bootstrap to DRUPAL_BOOTSTRAP_LANGUAGE then include unicode.inc.

include_once DRUPAL_ROOT . '/includes/unicode.inc';


// Now proceed with a full bootstrap.


// Turn error reporting back on. From now on, only fatal errors (which are
// not passed through the error handler) will cause a message to be printed.
ini_set('display_errors', TRUE);

// Only proceed with updates if the user is allowed to run them.
if (update_access_allowed()) {

  include_once DRUPAL_ROOT . '/includes/install.inc';
  include_once DRUPAL_ROOT . '/includes/batch.inc';


  // Check the update requirements for all modules. If there are warnings, but
  // no errors, skip reporting them if the user has provided a URL parameter
  // acknowledging the warnings and indicating a desire to continue anyway. See
  // drupal_requirements_url().
  $skip_warnings = !empty($_GET['continue']);

  $op = isset($_REQUEST['op']) ? $_REQUEST['op'] : '';
  switch ($op) {
    // update.php ops.

    case 'selection':
      if (isset($_GET['token']) && $_GET['token'] == drupal_get_token('update')) {
        $output = update_selection_page();

    case 'Apply pending updates':
      if (isset($_GET['token']) && $_GET['token'] == drupal_get_token('update')) {
        // Generate absolute URLs for the batch processing (using $base_root),
        // since the batch API will pass them to url() which does not handle
        // update.php correctly by default.
        $batch_url = $base_root . drupal_current_script_url();
        $redirect_url = $base_root . drupal_current_script_url(array('op' => 'results'));
        update_batch($_POST['start'], $redirect_url, $batch_url);

    case 'info':
      $output = update_info_page();

    case 'results':
      $output = update_results_page();

    // Regular batch ops : defer to batch processing API.
      $output = _batch_page();
else {
  $output = update_access_denied_page();
if (isset($output) && $output) {
  // Explicitly start a session so that the update.php token will be accepted.
  // We defer the display of messages until all updates are done.
  $progress_page = ($batch = batch_get()) && isset($batch['running']);
  print theme('update_page', array('content' => $output, 'show_messages' => !$progress_page));

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